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RAISSA SANTANA RENOVATO
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Detection and molecular characterization of Toxoplasma gondii in sheep from slaughterhouses in Pernambuco state, Brazil: Impact on public health.
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Leader : RINALDO APARECIDO MOTA
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MEMBRES DE LA BANQUE :
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RENATA PIMENTEL BANDEIRA DE MELO
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THAIS FERREIRA FEITOSA
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WAGNNER JOSE NASCIMENTO PORTO
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Data: 27 févr. 2024
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Afficher le Résumé
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Brazil stands out worldwide in the production of foods of animal origin. Sheep farming is of fundamental socioeconomic importance for the Northeast, as the production of these animals represents an alternative to the supply of meat, milk, and derivatives, especially for the rural population. The northeastern herd accounts for approximately 64% of Brazil's sheep, the vast majority of which are exploited by small and medium-sized breeders. In this specific market, consumers are increasingly looking for safe foods, making it essential to invest in the prevention of zoonoses, which can be transmitted through foods of animal origin, with greater focus on toxoplasmosis, a zoonosis with worldwide distribution, caused by the protozoan T. gondii, with felids as its definitive host and more than 300 species of mammals as intermediate hosts, including humans and 30 species of birds. The consumption of raw meat or meat products has been the main route of transmission to humans, with sheep being of greater importance as they present a higher frequency of tissue cysts, causing serious fetal and neonatal disorders in humans, and harm to the health of children, the elderly and immunocompromised adults. Some diagnostic methods for the occurrence of this disease in meat are the ELISA test and PCR. The aim was to study the presence and distribution of Toxoplasma gondii infection in sheep slaughtered in the state of Pernambuco, Brazil, first determining the prevalence of anti-T. gondii antibodies by RIFI and then evaluating the viability of T. gondii in the animals' tissues. by bioassay in mice and from this material, identify the presence of T. gondii DNA by PCR. Samples from 250 sheep were collected on the slaughter line. Blood samples were collected by puncture of the jugular vein. Fragments of liver, heart, brain, lung, and diaphragm were also collected at the evisceration. The samples were sent to the LDIC at UFRPE. To test for IgG anti-T. gondii, RIFI was used, and the samples with titers greater than or equal to 1:64 being considered positive. Serum-positive tissue samples in the RIFI were macerated in isolation and subjected to the digestion protocol in an acidic pepsin solution to be inoculated into Swiss mice. The inoculated mice were observed for 45 days, before euthanasia and collection of the brain and abdominal lavage, which in turn were subjected to PCR where they were amplified at 529bp. In the present study, 31.64% (81/256) of the sheep were seropositive for anti-T. gondii. Regarding the bioassay in mice (mus musculus) to isolate T. gondii, of the 81 samples inoculated for euthanasia after 45 days, and research for brain cysts and PCR for the genus apicomplexa and toxo – 529. Of the 44 samples analyzed, 32.2% (10/81) of the mice had cysts in the brain, 39.5% (32/44) were positive for the apicomplexan genus and 20.9% (17/44) were positive for toxo 529.
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CATHARINA DE ALBUQUERQUE VIEIRA
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GASTRIC ULCERS IN EQUINES HOUSED IN A CENTER ZOONOSIS CONTROL IN RECIFE – PERNAMBUCO, BRAZIL
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Leader : HELIO CORDEIRO MANSO FILHO
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MEMBRES DE LA BANQUE :
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CAROLINA JONES FERREIRA LIMA DA SILVA
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ELIZABETH REGINA RODRIGUES DA SILVA
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HELIO CORDEIRO MANSO FILHO
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RAISSA KAROLLINY SALGUEIRO CRUZ
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Data: 27 févr. 2024
Ata de defesa assinada:
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Afficher le Résumé
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The Equine Gastric Ulcer Syndrome (EGUS) can be divided into Equine Squamous Gastric
Disease (ESGD) and Equine Glandular Gastric Disease (EGGD). EGUS tends to manifest with
nonspecific clinical signs, and its pathophysiology is often linked to factors related to nutrition,
management, exercise, stress, and excessive use of non-steroidal anti-inflammatory drugs.
Definitive in vivo diagnosis is only possible through gastroscopy; however, rapid occult blood
tests in feces can be used as a screening tool for animals that should be referred for endoscopy.
Treatment is focused on reducing stomach acidity. The study's objectives were to evaluate the
gastric mucosa of horses housed in Recife’s Environmental Surveillance and Zoonosis Control
Management (GEVACZ), to diagnose ulcers, classify them according to location and severity,
report an unprecedented case of gastric myiasis in the region, and expand knowledge about the
disease and its relationship with risk factors and animal welfare. Gastroscopies were performed
on 20 adult horses seized by GEVACZ - Recife. The animals underwent a fasting period of 12
to 16 hours and were sedated for the gastroscopy procedure. The lesions found were classified
according to the scale of the European College of Equine Internal Medicine, based on location,
extension, and severity. Additionally, complementary tests were performed, such as rapid
occult blood test in feces on the day of endoscopy and the next day, measurement of fecal pH,
and blood collection for a complete blood count. The studied population showed a prevalence
of EGUS of 80%; 72% had EGGD lesions, 65% had ESGD, with 50% of the animals presenting
both conditions simultaneously. 85% of the animals had positive results for the occult blood
test in feces, with most showing positive albumin, which may indicate colon ulcers. One of the
animals presented a live larva moving in the aglandular mucosa, consistent with a fly larva,
indicating a case of gastric myiasis by Gasterophilus, a parasite never reported in the state of
Pernambuco. The findings provide insights to improve the management of horses in zoonosis
control centers, aiming to reduce the impact of gastric ulcers and promote animal welfare.
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BRUNO RESENDE TÉOFILO
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Census and population estimate of domestic cats (Felis catus) in Fernando de Noronha, Pernambuco, Brazil, in 2023
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Leader : JEAN CARLOS RAMOS DA SILVA
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MEMBRES DE LA BANQUE :
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JEAN CARLOS RAMOS DA SILVA
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CARLOS ROBERTO ABRAHÃO
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FERNANDA LOFFLER NIEMEYER ATTADEMO
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Data: 28 févr. 2024
Ata de defesa assinada:
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Afficher le Résumé
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The aim was to carry out a population census of cats in the Fernando de Noronha Environmental Protection Area (APA) and a population estimate encompassing both the APA and the Fernando de Noronha National Marine Park (PARNAMAR), Pernambuco, Brazil. This study aimed to perform a population census and estimate in Fernando de Noronha's Environmental Protection Area, Pernambuco State, Brazil. The census was accomplished during June, 2023, using the site visit method on all residences and commercial establishments from the 15 districts, through a survey application to tutors. In total, 879 cats were accounted for, being 32 domiciled (supervised by owners with movement restriction), 578 peridomiciled (supervised by owners without movement restriction) and 269 free-roaming cats were reported by citizens spotted in yards and nearby areas. The neutered cats percentage was 92.9% (567/610), which indicated that the population may stabilize in the next years; in relation to the animals' origin, the three districts with more cats reported were: Vila do Trinta (19.5%; 119/610), Floresta Nova (17.2%; 105/610), and Vila do Boldró (13.9%; 85/640); 540 cats (88.5%) did not have microchip; most of the cats (60.7%; n=370) had been neutered and ear-tipped for easier identification (T.N.R. method = trap-neuter-return); and there were eigth answers to how those cats got there, including: adoption (65.7%; n=401), born at home (10%; n=61) and abandonment (7.9%; n=48). The population estimate was carried out in May and June 2023 and sampling sessions were carried out on seven transects. The transects were located in six strata and their areas ranged from 0.71 to 4.01 km2. The estimated density of peridomiciled, free-living or feral cats sighted on the main island of Fernando de Noronha was 83.2 cats per km2 (95% CI = 61.5; 112.5). The population density in the strata varied widely from 20.6 to 193.1 per km2 and the population of these cats was estimated at 775 individuals (95% CI = 574; 1,048), ranging from 49 to 531 cats in each stratum. The current study represented the first domiciled, peridomiciled and free-roaming cats' census in this Conservation Unity, using both quantitative and qualitative methods. Finally, this census and estimate population will serve as a subsidy to public policy implementation regarding the population control of this important invasive species in Fernando de Noronha.
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JONATHAN ALISON DA SILVA
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EVALUATION OF THE BIOTECHNOLOGICAL POTENTIAL OF BLACK JUREMA (Mimosa tenuiflora) VEGETABLE EXTRACT IN THE PRESERVATION OF CHILLED BEEF GROUND MEAT
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Leader : ELLEN CORDEIRO BENTO DA SILVA
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MEMBRES DE LA BANQUE :
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ELLEN CORDEIRO BENTO DA SILVA
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ANDRE DE SOUZA SANTOS
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MARIANA GOMES FERREIRA MACHADO DE SIQUEIRA
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Data: 29 févr. 2024
Ata de defesa assinada:
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Afficher le Résumé
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The use of synthetic additives in food preservation has demonstrated toxic effects, which is why natural products have become a viable alternative. Therefore, the aim of this study was to evaluate the antimicrobial activity and biotechnological potential of the ethanolic extract of black jurema (Mimosa tenuiflora) bark as a preservative in the food industry. With this purpose, an in vitro investigation of the antimicrobial potential of the extract was carried out against spoilage and pathogenic microorganisms (S. aureus, E. faecalis, E. coli, S. typhi and P. aeruginosa), using the serial microdilutions with determination of the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (CBM). In addition, the in situ antimicrobial activity of the plant product was established, using samples of ground beef, treated and untreated, cooled for zero, 24, 72 and 144 hours and evaluated using Petrifilm®3M TM plates, associated with the determination of your pH. The results demonstrated that the M. tenuiflora extract was capable of inhibiting the growth of all microorganisms in vitro, representing a novelty in its action against S. typhi and P. aeruginosa. Although it did not interfere with the count of aerobic mesophiles in situ (P>0.05), the extract was able to significantly reduce (P<0.05) the colony forming units (CFU) of E. coli in the treated meat and chilled for 24 hours, as well as total coliforms at 24, 72 and 144 hours. The samples did not have their pH changed (P<0.05), regardless of the treatment and refrigeration time. It is concluded that the ethanolic extract of M. tenuiflora inhibits the growth of pathogenic bacteria in vitro and reduces the CFU load of E. coli and total coliforms in situ, representing a promising natural preservative in preserving food products and and maintaining food safety.
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RENATA GABRIELA AMBROSINA SILVA DE MELO
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Antimicrobial activity of hydroalcoholic and ethanolic extracts of Piper Umbellatum against strains of Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosas in vitro
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Leader : EVILDA RODRIGUES DE LIMA
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MEMBRES DE LA BANQUE :
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EVILDA RODRIGUES DE LIMA
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EULINA TEREZA NERY FARIAS
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MELÂNIA LOUREIRO MARINHO
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Data: 29 févr. 2024
Ata de defesa assinada:
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Afficher le Résumé
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Abstract
Piper umbellatum is a plant rich in essential oils and other bioactive substances that have strong anti-inflammatory, antirheumatic, antianemic, antispasmodic and antimicrobial potential. Bacteria are often related to microbial resistance, either due to the indiscriminate use of antimicrobials or their virulence. The use of medicinal plants and herbal products has been growing and is now an alternative to conventional treatment as it has fewer adverse effects and a low resistance factor, making it an important area of research for new antibiotic therapies. Therefore, piper umbellatum presents levels of secondary metabolites that justify its antimicrobial action against various agents. Therefore, the objective of this work is to evaluate the potential of the hydroalcoholic extract and the ethanolic extract of the Piper umbellatum plant in the in vitro growth of the bacteria staphylococcus aureus, escherichia coli and pseudomonas aeruginosa. After obtaining the extracts by cold percolation, a chromatography analysis for CG-EM was carried out to identify the main compounds of the species. To assess susceptibility to conventional antimicrobials, disk diffusion tests were carried out, using the antimicrobials Cefoxitin 30mg, Benzylpenicillin G 10 mg, Tetracycline 30mg, Erythromycin 15mg, and Clindamycin 2mg, and the drugs tested were considered sensitive (S), resistant ( R) or intermediate (I). The bacteria tested came from the bacteriotechnical library of the infectious diseases laboratory at UFRPE. At the end of the experiment of both tests, the extracts did not have the expected antimicrobial action, with the disk diffusion test showing that the inhibitory halo did not appear in all samples, and in the microdilution test, bacterial growth in all wells. Which may be related to microbial resistance or even differences in the concentration of secondary metabolites in the extract produced. It is therefore concluded that although the hydroalcoholic and ethanolic extracts of piper umbellatum do not present antimicrobial action for such bacteria, action cannot be ruled out for other strains. In addition, phytochemical studies are necessary to quantify the concentration of metabolites and the subtypes present in the extract that justify its lack of action in relation to antimicrobial activity.
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TAYLANE ALVES DA SILVA
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EVALUATION OF THE BIOTECHNOLOGICAL POTENTIAL OF VEGETABLE EXTRACTS FROM AROEIRA (Schinus terebinthifolius Raddi) IN THE PRESERVATION OF CHILLED GROUND CHICKEN MEAT
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Leader : ELLEN CORDEIRO BENTO DA SILVA
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MEMBRES DE LA BANQUE :
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ELLEN CORDEIRO BENTO DA SILVA
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AMANDA DE DEUS FERREIRA ALVES
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MARIANA GOMES FERREIRA MACHADO DE SIQUEIRA
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Data: 29 févr. 2024
Ata de defesa assinada:
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Afficher le Résumé
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The use of synthetic additives by the food industry aims to prevent bacterial and fungal contamination in products and, therefore, all the limitations derived from this. However, there is controversy regarding the safety of synthetic additives, which is why natural extracts have been widely studied to replace them. The mastic tree (Schinus terebinthifolius Raddi) has several bioactive compounds in its structures and proven antimicrobial action, which is why the aim was to evaluate the antimicrobial activity and biotechnological potential of ethanolic extracts from mastic bark and fruits as agents that promote the conservation of ground meat. of chilled chicken. To determine the antimicrobial activity of the in vitro extracts, the serial microdilution technique was used (2:1, 1:1; 1:2, 1:4, 1:8, 1:16 and 1:32), employing microorganisms S. aureus, E. coli, E. faecalis, S. typhi and P. aeruginosa, with establishment of the MIC (minimum inhibitory concentration) and MBC (minimum bactericidal concentration). In turn, the study of their capacity as preservative additives was promoted through in situ microbiological analyzes of ground chicken meat, treated or not with the extracts, using Petrifilm®3M TM plates, and pH determination, at moments zero, 24, 72 and 144 hours of refrigeration. Extracts from mastic bark and fruit showed different responses in the tests, but both showed inhibitory capacity for microbial growth in vitro, for all microorganisms studied; with emphasis on the bark. In turn, in the in situ study, despite numerical evidence of reduced microbial growth in treated meat products, statistically fewer (P<0.05) colony-forming units were observed only for coliforms in meat added with peel extract at the time 72 hours of refrigeration, as well as for E. coli and aerobic mesophiles in those treated with fruit extract for 24 hours. As for pH, it increased (P<0.05) throughout the refrigeration time, particularly for untreated meat. It is concluded that ethanolic extracts of peels and fruits of S. terebinthifolius Raddi inhibit the growth of pathogenic bacteria in vitro and reduce the load of CFU of coliform, E. coli and mesophiles in situ, which makes them a viable alternative to replace the additives.
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MARCELO DO NASCIMENTO ALVES
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CARDIAC ENZYMES IN DOGS WITH DIROFILARIOSIS AND LEISHMANIOSIS CO-INFECTION
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Leader : PIERRE CASTRO SOARES
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MEMBRES DE LA BANQUE :
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PIERRE CASTRO SOARES
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LEUCIO CAMARA ALVES
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EDNA MICHELLY DE SA SANTOS
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Data: 26 mars 2024
Ata de defesa assinada:
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Afficher le Résumé
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The development of research aimed at the early diagnosis of myocardial injuries in dogs that present potentially systemic pathological conditions is relevant, contributing to early diagnosis and prophylactic procedures. Therefore, the objective was to evaluate the usefulness of biomarkers used as diagnostic tools and clinical condition in dogs with co-infection of Heartworm and Canine Visceral Leishmaniasis (CVL). Three groups of dogs were formed, that is: group 1 - Dogs with Heartworm Disease (n=30); group 2 - Dogs with LVC/Lcan (n=30) and group 3 - Dogs with Heartworm-LVC/Lcan co-infection (n=20). Blood was collected by jugular or cephalic venipuncture for quantification of Troponin I, CK-MB and CK NAK. Serum concentrations of Troponin I were quantified by chemiluminescence immunoassay, using ACCESS2 equipment and commercial kits from Beckman Coulter®; as for CK-MB and CK NAK, these were determined on LABMAX 240 equipment using commercial Labtest® kits. The results were analyzed using the Statistical Analysis System statistical package, using the SAS PROC MIXED procedure. There was no group effect for the variable Troponin I (p=0.3072), while there was significant variation for the variables CK-MB (p=0.0017) and CK NAC (p=0.0003). Higher concentrations of CK-MB and CK-NAC were observed for dogs in the Heartworm and Heartworm+Leishimaniosis groups compared to dogs in the Leishimaniosis groups. There was a moderate positive relationship between Troponin I x CK NAC (r=0.37) for dogs in the Leishimaniosis group, as well as a high positive relationship between CK-MB x CK NAC for dogs in the Heartworm group (r=0.82 ) and Leishimaniosis (r=0.91). In relation to the group of dogs with Heartworm + Leishimaniosis, there was a moderately positive relationship (r=0.52) between CK-MB x CK NAC. The results demonstrate the usefulness of the biomarkers used in this study as they are promising tools for detecting cardiac lesions in dogs with heartworm and canine visceral leishmaniasis (CVL) co-infection.
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NATHALIA VANESSA SARAIVA LIMA
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EVALUATION OF VISUAL PATHWAYS IN DOGS USING ELECTROPHYSIOLOGICAL TESTS
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Leader : FABRICIO BEZERRA DE SA
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MEMBRES DE LA BANQUE :
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FABRICIO BEZERRA DE SA
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JEINE EMANUELE SANTOS DA SILVA
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ROBERIO SILVEIRA DE SIQUEIRA FILHO
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Data: 28 mars 2024
Ata de defesa assinada:
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Afficher le Résumé
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The visual evoked potential (VEP) is an objective electrophysiological test for evaluating visual acuity in non-verbal patients, as its results require minimal collaboration from patients. Assessing the integrity of the retina and optic nerve is essential in the diagnosis of optic pathway disorders, however VEP is still little used in veterinary ophthalmology, requiring further studies and the development of specific protocols for domestic species. The objective of this work was to standardize the visual potential evoked by a flash of white light (VEP-F) in awake dogs, after defining in the skulls of canine cadavers the closest point to the occipital region for the best positioning of the active electrode during the examination. Six heads of dog cadavers were selected, sawn in a sagittal section, the length from the frontonasal joint to the occipital protuberance was measured, and, after visual identification of the occipital region, the location closest to it was externally marked, determining the ideal Oz point. Then, the distance between the inion and Oz was measured, in all skulls, and the average was obtained, in centimeters and percentage, according to the international 10-20 system, of the Oz point. The second part of the experiment consisted of selecting ten animals, males and females, of varying ages and breeds, which were subjected to a light flash-evoked potential examination, using the Nihon Kohdem system, Neuropack 2 MEB-7102A/k , in a dark room, without dark adaptation, the electrodes were arranged in the following sequence: the ground electrode (Fpz) at the frontonasal joint, the active electrode (Oz) at the point previously determined on cadavers and the reference electrode (Cz) halfway between them. The measurement was 1.91 cm from the inion as the closest point to the occipital region, this value being equivalent to 16.16% in the international 10-20 system. When evaluating all animals, the mean latencies of P1, P2 and P3 were 6.69ms, 36.21ms and 104.3ms, respectively; Animals between 2-4 years old showed higher latencies, with 39.65ms in P2, and smaller amplitudes, when compared to animals aged 5-7 years; Males had longer latency than females, with P2 of 43.26ms in males and 26.16ms in females; The amplitudes of all intervals in mesaticephalic animals were higher than in brachycephalic animals. We conclude that the findings of this research serve as a basis for standardizing normal parameters for VEP-F in adult dogs of different breeds and sex, being considered a useful tool to evaluate the integrity of the visual pathway from the retina to the occipital cortex, which can be enrolled in clinical or experimental studies without sedation or anesthesia, dark adaptation or mydriatics.
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ADRIANO DE JESUS SANTANA
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INFLUENCE OF NUTRITIONAL CONDITION SCORE AND PARITY ON FTAI EFFICIENCY
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Leader : MARCOS ANTONIO LEMOS DE OLIVEIRA
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MEMBRES DE LA BANQUE :
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MARCOS ANTONIO LEMOS DE OLIVEIRA
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FELIPE AUGUSTO BOUDOUX MARTINS SALES
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JOSÉ CARLOS FERREIRA DA SILVA
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Data: 30 mai 2024
Ata de defesa assinada:
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Afficher le Résumé
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Given the increased global demand for food, beef production faces the challenge of optimising its reproductive efficiency. Fixed-Time Artificial Insemination (FTAI) emerges as a key technique, allowing better reproductive management through oestrus synchronisation. This study aimed to investigate the impact of female parity and the number of services per conception on pregnancy rates in beef cattle undergoing FTAI. Results indicate no significant differences in pregnancy rates or body condition scores across parity groups, though nulliparous females required more insemination services per conception than primiparous and multiparous ones. It concludes that while parity does not directly affect pregnancy rates, it influences the number of services per conception.
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10
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ANA IRIS DE ARAUJO BATISTA
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INTRAOCULAR PRESSURE, OPHTHALMIC CLINICAL PARAMETERS AND
ELECTRORETINOGRAPHICS OF Caiman Latirostris
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Leader : FABRICIO BEZERRA DE SA
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MEMBRES DE LA BANQUE :
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FABRICIO BEZERRA DE SA
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JOAQUIM EVENCIO NETO
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MARIA EDNA GOMES DE BARROS
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Data: 30 mai 2024
Ata de defesa assinada:
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Afficher le Résumé
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The yellow-snouted alligator (Caiman latirostris) is a crocodilian reptile of the family Alligatoridae and genus Caiman. It is widely distributed throughout the southeast of South America, occurring in any ecosystem associated with water in the basins of the Paraná, Paraguay, Uruguay and São Francisco rivers, being common from the extreme east of Brazil to Uruguay. It also occurs in coastal ecosystems such as mangroves. The objective was to record the full-field electroretinogram in Caiman Latirotris, analyzing the retinal electrical response in a photopic environment and intraocular pressure by rebound tonometry in 18 eyes (9 animals). Mean intraocular pressure values were 10.0 ± 3.0 mmHg. The values obtained for the implicit time of waves a and b were 37.3 ± 4.4 and 74.8 ± 13.3 milliseconds, respectively, with amplitudes of a -14.7 ± 10.7 μV and b 42.5 ± 19.9 μV. All values were obtained without anesthetic restriction, making it possible to obtain data on all animals only with physical restraint.
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ESMERINA ELANE CARNEIRO DE ALBUQUERQUE
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MOLECULAR DIAGNOSIS OF TRANSPLACENTAL TRANSMISSION OF Theileria equi AND Babesia caballi IN HORSES IN THE STATE OF PERNAMBUCO
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Leader : FRANCISCO DE ASSIS LEITE SOUZA
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MEMBRES DE LA BANQUE :
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FRANCISCO DE ASSIS LEITE SOUZA
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GILSON SANTOS BUONORA
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JESSICA DE TORRES BANDEIRA
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Data: 30 sept. 2024
Ata de defesa assinada:
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Afficher le Résumé
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Equine piroplasmosis (EP) is an endemic disease in Brazil caused by Theileria equi and Babesia caballi, both transmitted by ticks. While many infected horses remain asymptomatic, some develop severe clinical manifestations, including acute and chronic forms. Transplacental transmission, in addition to perpetuating the infection, can lead to serious reproductive complications, such as late-term abortions and the birth of foals showing clinical signs of piroplasmosis. This study aimed to determine the frequency and evaluate the epidemiological aspects of the transplacental transmission of these hemoparasites in mares and their foals in the state of Pernambuco, Brazil. The research was conducted on a ranch with 50 Quarter Horse mares and 35 foals between 2021 and 2023. Blood samples were collected from the mares at parturition and from the foals immediately after birth and 12 hours after colostrum ingestion. The samples were subjected to hematological and parasitological tests and Polymerase Chain Reaction (PCR) for the detection of T. equi and B. caballi. DNA was extracted, and the PCR-amplified products were analyzed and sequenced. For better understanding, this dissertation was divided into a literature review and one chapter, namely: Chapter 1 “Evidence of the Transplacental Transmission of Theileria equi and Babesia caballi in Quarter Horse Foals in the State of Pernambuco.” The frequency of T. equi and B. caballi in the mares was 36% and 14%, respectively. Transplacental transmission was confirmed in 20% of the foals for T. equi and 14.28% for B. caballi. Among the foals positive for T. equi, 71.42% became negative after colostrum ingestion, and 80% of the foals positive for B. caballi also tested negative after colostrum ingestion. No clinical signs were observed in the foals, even in those that remained positive after colostrum ingestion. This study confirmed the congenital transmission of T. equi and B. caballi in mares and foals in the state of Pernambuco, highlighting the importance of monitoring and controlling these agents to prevent reproductive losses and the spread of the disease.
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ERIKA DANIELLE CESÁRIA DA SILVA
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USE OF INFRARED THERMOGRAPHY AS A DIAGNOSTIC AID IN VETERINARY MEDICINE
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Leader : JOAQUIM EVENCIO NETO
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MEMBRES DE LA BANQUE :
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JOAQUIM EVENCIO NETO
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LUANNA DE FIGUEIREDO BATISTA
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NÁGELA MARIA HENRIQUE MASCARENHAS
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Data: 24 oct. 2024
Ata de defesa assinada:
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Afficher le Résumé
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Infrared thermography (IVT) is a non-ionizing and non-invasive tool that captures and records thermal emission from the surface of the skin. IVT is in constant technological evolution, as is the case with other diagnostic imaging modalities such as: ultrasound, digital x-rays, computed tomography and magnetic resonance imaging. Because it is a non-invasive method and free of radiation emissions, it can be performed for long periods of monitoring without harm to the patient. This technology has an affordable price, there are small limitations regarding image quality and its interpretation. Some aspects must be taken into account when it comes to its use. They are: The wave spectrum, emissivity, air humidity, ambient temperature and resolution and sensitivity. In veterinary medicine because it is not invasive and does not emit radiation, this technique has several advantages in its use, being used in the most diverse fields , with the most different species.
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ÂNGELA IMPERIANO DA CONCEIÇÃO
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GENE EXPRESSION OF mRNA FOR ADIPOKINS AND ITS RELATIONSHIP WITH METABOLIC DYNAMICS IN COWS WITH AND WITHOUT HYPERKETONEMIA
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Leader : PIERRE CASTRO SOARES
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MEMBRES DE LA BANQUE :
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JOSE AUGUSTO BASTOS AFONSO DA SILVA
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MARIA CLAUDIA ARARIPE SUCUPIRA
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PAULO ROBERTO ELEUTERIO DE SOUZA
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PIERRE CASTRO SOARES
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RAFAEL OTAVIANO DO REGO
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Data: 26 févr. 2024
Ata de defesa assinada:
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Afficher le Résumé
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Understanding the physiological roles of adipokines in ruminants is crucial to improving animal health and productivity, as they are intrinsically related to the states of metabolic regulations, energy balance, glucose and lipid metabolism, inflammatory response, endocrine, affecting sensitivity insulin and metabolic syndromes. Therefore, the objective was to verify the expression of mRNA for leptin, leptin receptor (ObRb), adiponectin, adiponectin receptor (AdipoR1) and resistin in placental tissue of cows with and without hyperketonemia and to evaluate their interaction with the energetic metabolic profile, protein, enzymatic, hormonal and mineral. To this end, 135 pregnant cows were used and sent for clinical-obstetric care at the Garanhuns Bovine Clinic/UFRPE. The samples were collected at the time of birth and the females were subsequently distributed into groups, whose inclusion indicators for the cows were: G1 without hyperketonemia (n=120) (β-Hydroxybutyrate <1.2mmol/L) and G2 with hyperketonemia (n=15) (β-Hydroxybutyrate ≥1.2mmol/L). The biochemical indicators determined in the blood were: NEFA, β-Hydroxybutyrate, glucose, total protein, albumin, urea, creatinine, GGT, AST, chlorides, phosphorus, ionizable calcium, potassium and sodium ions and the hormones insulin and cortisol. Insulin sensitivity was assessed using mathematical models (HOMA-IR, QUICKI, RQUICKI and RQUICKIΒHB). Fragments of each placenta were collected and stored in cryotubes containing Trizol and kept at -80°C. Of the 135 placenta samples collected from cows, 38 were processed and analyzed, 23 from G1 and 15 from G2. mRNA extraction was performed using the trizol method. cDNA was synthesized from 1μg of total RNA. qPCR analyzes were performed in duplicates. The difference between the mean Ct of the gene of interest and the mean Ct of the endogenous gene (ΔCT) was calculated for normalization and the result for gene expression was determined by a dimensionless value using the formula 2-ΔΔCt. The data was processed using PROC MIXED from SAS. The variables were subjected to the normality test to verify whether or not they met the normality assumptions using different tests, such as the Shapiro-Wilk, Kolmogorov-Smirnov and Anderson-Darling tests. Data that did not meet these assumptions were subjected to transformation, using a logarithmic or radical basis. For the set of variables with a parametric profile, the F Test was performed, followed by a mean study using the SNK Test. For the set of variables indicating the application of a non-parametric test, the data were submitted to the Mann-Whitney U Test. For all statistical analyzes carried out, a significance level (p) of 5% will be adopted. For multivariate analysis, pre-processing was carried out considering: 1. Imputation of missing data; 2. SMOTE: Synthetic sampling in the case (after sample selection) and 3. Auto scaling: Different variances per variable. Therefore, different models were carried out: 1. Exploratory analysis and 2. Supervised pattern recognition. In the present work, statistical techniques of multivariate analysis were used, applying PCA (Principal Component Analysis), HCA (Hierarchical Component Analysis) and PLS (Partial Least Squares), seeking to evaluate the best response in the analyzes carried out. Serum NEFA concentrations were marked in the group of animals with hyperketonemia (p=0.0002). Glucose concentrations were significantly lower in cows with hyperketonemia (p=0.0132), as were the percentages of RQUICKIβHB (p<.0001). Serum urea concentrations were significantly higher in G2 females. Hyperketonemic cows had higher mean values for leptin (p=0.0174) and ObRb (<.0001) expression and healthy cows had higher mean values for adipoR1 and resistin expressions (<.0001). In the analysis of the relationship between pairs of variables, it was found that the variables with the greatest capacity for discrimination between the groups studied were the expression of ObRb, expression of AdipoR1, β-Hydroxybutyrate, AGNE, glucose, GGT and RQUICKBHB, in addition to having varying degrees relationship, highlighting: positive correlation of leptin expression with the expression of ObRb, β-Hydroxybutyrate; positive correlation of ObRb expression with β-Hydroxybutyrate, NEFA, GGT, AST and negative with glucose; positive correlation of AdipoR1 expression with glucose, RQUICK and RQUICKBHB, and negative with β-Hydroxybutyrate, NEFA and GGT; negative correlation of β-Hydroxybutyrate and NEFA with RQUICK and RQUICKβHB. In HCA, it is evidenced that AdipoR1 and β-Hydroxybutyrate play a crucial role in differentiating the groups and identifying distinct metabolic patterns associated with hyperketonemia; in PCA, AdipoR1 and RQUICKBHB emerged as key variables for the control group, while AGNE and β-Hydroxybutyrate stood out for the hyperketonemia group. Regarding PLS for the hyperketonemia case class, it was identified that the expression of ObRb, expression of AdipoR1, and β-Hydroxybutyrate are representative of the hyperketonemia condition in cows at the time of calving. The analysis of adipokines produced in the placenta is a new tool to understand the role of these molecules in the mechanisms regulating metabolism in cows. The increase in leptin and ObRb gene expression and the reduction in AdipoR1 gene expression in hyperketonemic cows and the changes in metabolism and associated biochemical processes stand out, showing that the placental production of this hormone can have an important contribution to metabolic conditions, such as hyperketonemia, bringing implications for the physiology, health and productivity of females.
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2
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RENATO SOUTO MAIOR MUNIZ DE MORAIS
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EVALUATION OF TRACHEA AND ZOOTECHNICAL DATA OF BIRDS NOT VACCINATED AGAINST INFECTIOUS CHICKEN BRONCHITIS VIRUS BR VARIANT
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Leader : JOAQUIM EVENCIO NETO
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MEMBRES DE LA BANQUE :
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HERALDO BEZERRA DE OLIVEIRA
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JOAQUIM EVENCIO NETO
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MARIA EDNA GOMES DE BARROS
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PRISCILLA MARIA CAVALCANTE ROCHA
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WANESSA NOADYA KETRUY DE OLIVEIRA
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Data: 27 févr. 2024
Ata de defesa assinada:
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Brazil is the second biggest chicken producer worldwide and the biggest exporter. In recent years, a growing number of studies have researched how to avoid the comdemnation of carcasses and also to identify the comdemnation causes. Little is known about the viral agents involved, such as the infectious bronchitis virus (IBV). This work aims to study morphological and histopatological alterations in birds not vaccinated against IBV at the age of slaughter and evaluate zootechnical performance. In total, 69 birds non vaccinated against IBV variant BR, from Cobb or Ross lineages, aged 40 to 45 days were used.ELISA IDvet® and nested-PCR were performed as diagnostic test. For histomorphometry and histopathology, trachea fragments were collected, processed and stained with hematoxylin and eosin for optical microscope observation. Seven of the 15 batches tested positive by serology and none tested positive by Nested-PCR. The main histopathological findings were lymphoplasmacytic tracheitis, mucous gland hyperplasia and hypertrofia and deciliation. In histomorphometry, IBV-positive animals had an average tracheal mucosa thickness of approximately 11% higher than IBV-negative animals.The evaluated zootechnical parameters were mortality percentage, average weight of birds, daily weight gain and food conversion and production fator. Of these parameters, only mortality percentage had a significant difference between IBV-positive and IBV-negative animals. The production factor values, despite not being statistically different between IBV-positive/negative, shows a better performance for IBV-negative lots. The presence of IBV can cause damage to tracheal mucosa. This causes thickening of the tracheal mucosa in birds with active inflammatory processes. IBV in the broiler flock relates to a higher mortality and therefore with lower productioneffiency.
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3
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MARINA CAVALCANTI PEREIRA
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Histological evaluation of the healing effect of different acupuncture techniques for the treatment of excisional wounds in albino Wistar rats (Rattus norvergicus albinus)
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Leader : JOAQUIM EVENCIO NETO
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MEMBRES DE LA BANQUE :
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FABRICIO BEZERRA DE SA
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GRAZIELLE ANAHY DE SOUSA ALEIXO CAVALCANTI
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JOAQUIM EVENCIO NETO
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MARIANA GOMES DO RÊGO
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VITOR CAIAFFO BRITO
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Data: 28 févr. 2024
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This work aimed to evaluate different acupuncture techniques for the treatment of excisional wounds in albino Wistar rats. For this, 100 (one hundred) male rats were selected, divided into 5 groups of 20 animals: GC - no treatment; GA1- Animals treated with systemic acupuncture at points: B13, B17 and E36, GA2- Animals treated with acupuncture, using the cerclage technique; GEA electroacupuncture, using the cerclage technique at a frequency of 2Hz and 1mA output. GL – laser at a wavelength of (660 nm) with a power of 100 mW and a decreasing dose of 5 J/point. All animals received treatments every other day for 21 days. On postoperative days 3, 7, 14 and 21, 5 animals from each group were euthanized to collect samples from the wound area and subsequent observation and microscopic analysis. HE and Gomori Trichrome staining were used and angiogenesis and tissue morphology (type and intensity of cellular infiltrate), degree of re-epithelialization and keratinization, presence and reorganization of collagen and presence of hair follicles and collagen fibers were evaluated. The results demonstrated a difference in wound contraction on the 7th PO day between GA2 and GEA (p < 0.05), GA2 and GL (p < 0.01), GL and GC (p < 0.05), on the 14th PO day , between GA1 and GA2 (p < 0.001), GA2 and GC (p < 0.01), GEA and GC (p < 0.01), GL and GC (p < 0.01) and on the 21st day PO between GA2 and GEA (p < 0.05), GL and GEA (p < 0.001), GEA and GL (p < 0.05). Regarding wound epithelialization, there was a significant difference on day 7 PO (GA1 = GA2 = GL > GEA =GC) and on day 14 PO (GC = GA1 = GA2 = GEA> GL). Regarding crust formation, there was a difference on day 14 (GC > GL > GA2 > GEA = GA1) and on day 21 (GL > GEA > GC = GA1 = GA2). When evaluating the degree of inflammation, differences occurred on day 7 PO (GL = GC = GEA > GA1 = GA2), day 14 PO (GL > GEA = GC = GA1 > GA2) and day 21 PO (GC> GL > GEA > GA1 > GA2). Regarding the degree of extracellular matrix deposition, there was a difference between the groups on days 14 PO and 21 PO (GA1 = GA2 = GEA > GL = GC). After analyzing the experiment, it was observed that the three acupuncture techniques for epithelial healing by secondary intention were effective. As there was no linear result, it is possible that the combination of techniques at different times resulted in a better healing process.
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4
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JAIANNE KEITT ALVES DE MELO
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Detection of secondary metabolites and evaluation of the toxicity of Palicourea ssp in Artemia salina and goats
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Leader : FABIO DE SOUZA MENDONCA
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MEMBRES DE LA BANQUE :
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FABIO DE SOUZA MENDONCA
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CARLA LOPES DE MENDONCA
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GLIERE SILMARA LEITE SOARES
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LUIZ CARLOS FONTES BAPTISTA FILHO
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TACIANA RABELO RAMALHO RAMOS
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Data: 29 févr. 2024
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Plants undergo vital biosynthesis processes that involve production, storage and decomposition of organic substances, including secondary metabolites. The objective is to identify the classes of secondary metabolites present in Palicourea hoffmannseggiana, P. capitata, P. barbiflora and P. colorata, evaluate the bioactivity in Artemia salina and the acute toxicity in goats. Specimens of Palicourea spp. were collected, identified and ethanolic and aqueous extracts were produced. Toxicity was evaluated through bioassay with Artemia salina and in experimental poisoning in goats. The phytochemical study revealed the presence of flavanones, catechins, steroids, saponins, alkaloids and coumarins. P. barbiflora was the only plant that showed high toxicity at all concentrations of the ethanolic extract. The species P.capitata (leaf) and P. colorata (leaf) showed toxicity at concentrations of 1.0 and 0.1 mg\mL. The ethanolic extract of P. hoffmannseggiana, P. colorata (seed) and P. aeneofusca were considered non-toxic against Artemia salina. In analyzes with aqueous extract, all species of Palicourea spp. demonstrate high toxicity, with the exception of P. barbiflora (leaves), classified as non-toxic. High Performance Liquid Chromatography (LC-MS) did not detect MFA in the Palicourea spp. species analyzed, and the acute poisoning experiment in goats was negative for sudden death due to the presence of MFA. The results obtained demonstrate evidence that species of the genus Palicourea have high cytotoxic potential, although not associated with the presence of MFA. The considerable toxicity presented by Palicourea spp. demonstrates the need to carry out more studies that support the results found, with the aim of analyzing more parameters that corroborate the results found.
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5
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FILIPE SOBRAL FONSÊCA
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Pathogens Research on Wildlife Birds and Cats from Fernando de Noronha Archipelago and Their Implications on Conservation and One Health
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Leader : JEAN CARLOS RAMOS DA SILVA
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MEMBRES DE LA BANQUE :
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ANDREA ALICE DA FONSECA OLIVEIRA
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JAQUELINE MARIA DOS SANTOS SOUSA
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JEAN CARLOS RAMOS DA SILVA
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MARCIO ANDRE DA SILVA
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PAULO ROGERIO MANGINI
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Data: 29 févr. 2024
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Fernando de Noronha Archipelago has a high biodiversity related to bird species. Besides, Fernando de Noronha hosts invasive species, as the domestic cat (Felis catus). Cat presence represents a high risk to bird species, as well as for humans due to transmission of zoonotic diseases. These risks are related to birds as well, once factors related to antropization can impact the survival of these species, and lead to zoonotic pathogens dissemination. Toxoplasmosis, neosporosis, feline immunodeficiency vírus (FIV), feline leukemia vírus (FeLV), west nile fever (WNF), newcastle disease (ND), and avian influenza (AI) had become even more frequent. It is extremely important to realize epidemiologic investigation on all these infections. The objective of this study was to realize molecular research of FNO, DN, and IA vírus on wild birds; anti-T. gondii and anti-Neospora caninum antibodies occurrence, as well as isolation and biological characterization of the T. gondii, and molecular research for FIV and FeLV on cats of Fernando de Noronha Archipelago. 225 animals’ sample were obtained on total, being 125 from 11 species of wild birds: 62 noronha vireo (Vireo gracilirostris), 52 noronha elaenia (Elaenia ridleyana), three white-tailed tropicbird (Phaeton lepturus), two eared dove (Zenaida auriculata), one brown booby (Sula leucogaster), one magnificent frigatebird (Fregata magnificens), one sooty tern (Onychoprion fuscatus), one red-footed booby (Sula sula), one black noddy (Anous minutus), and one brown noddy (Anous stolidus), and 100 from cats (81 stray cats and 19 feral cats). Among the 100 cat blood serum samples analyzed, 30 (30%) were positive for anti-T. gondii. Regarding the other pathogens studied, all agent isolation and molecular diagnoses in cats and birds were negative. Even with the negative results, of great importance especially in Avian Influenza in wild birds and poultry production, it is necessary to continue monitoring the risks of transmission of these pathogens. Therefore, it is essential to maintain this research, aiming to assist Health and Environment managers in implementing public policies to promote One Health.
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6
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ERICA BRUNA DE ANDRADE SOARES
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MORPHOLOGICAL, MORPHOMETRIC AND THERMOGRAPHIC EVALUATION OF SKIN WOUNDS IN WISTAR RATS TREATED WITH OINTMENT BASED ON ESSENTIAL OIL FROM LEMON PEEL (Citrus limon)
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Leader : JOAQUIM EVENCIO NETO
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MEMBRES DE LA BANQUE :
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JOAQUIM EVENCIO NETO
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LIRIANE BARATELLA EVENCIO
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MANUEL DE JESUS SIMÕES
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MARIA EDNA GOMES DE BARROS
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MARIA JOSE DE SENA
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Data: 13 mars 2024
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The objective of this work was to evaluate morphologically, morphometrically and thermographically the cutaneous wounds in Wistar rats, treated with ointment containing Sicilian lemon essential oil (Citrus limon) at 10%. Forty adults male Wistar rats were used, divided into two groups of 20 animals, namely: Treated Group (TG) wounds treated with an ointment composed of essential oil from the peel of Sicilian lemon fruits at a concentration of 10%, incorporated into Vaseline base and Control Group (CG), wounds treated with ointment containing only vaseline base. Each animal was submitted to two incisions in the skin, in the dorsolateral thoracic region, in the right and left antimeres. The wounds were measured on days 0, 3, 7, 14 and 21 postoperatively using a digital caliper to assess the degree of contraction and analyzed macroscopically. On the 3rd, 7th, 14th and 21st days of treatment, the animals were anesthetized and samples from the wounds of 5 animals from each group were collected and fixed in neutral buffered formalin at 10%. After fixation, the samples were subjected to routine methodology for impregnation and inclusion in histological paraffin, from which histological sections with a thickness of 5 µm were obtained, which were then stained with Hematoxylin-Eosin (HE) and Gomori's Trichrome, for morphological and morphometric evaluations. The obtained data were submitted to the ANOVA test complemented by the Tukey-Krame test (p<0.05). Macroscopic results indicated a slight difference between treated and control groups, but without statistical significance. In the quantification of blood vessels, there was great statistical significance on TG-14 in relation to CG and thermographic analysis indicated great statistical difference on days 7 and 14 PO. Based on the results found, it is concluded that the essential oil from Citrus limon peel on skin wounds has healing activity, improving the healing process in the treated groups.
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7
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NAYADJALA TÁVITA ALVES DOS SANTOS
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HISTOPATHOLOGICAL ANALYSIS AND MOLECULAR DIAGNOSIS OF DISEASES TRANSMITTED BY TICKS IN DOMESTIC AND WILD ANIMALS IN PARAÍBA AND PERNAMBUCO
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Leader : FRANCISCO DE ASSIS LEITE SOUZA
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MEMBRES DE LA BANQUE :
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FRANCISCO DE ASSIS LEITE SOUZA
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JULIANA FORTES VILARINHO BRAGA
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LUCIANO SANTOS DA FONSECA
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LUCILENE DOS SANTOS SILVA
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RICARDO BARBOSA DE LUCENA
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Data: 7 juin 2024
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Tick-borne diseases (TBDs) are targets of constant research in human and veterinary medicine, most of the time they are neglected diseases in Latin America, being considered a group of frequent diseases, given the tropical and subtropical climate that favors the emergence of diseases. . Among these diseases, we have those caused by protozoa of the genus Babesia, Hepatozoon, and those caused by bacteria such as those of the genus Ehrlichia, Rickettsia, Anaplasma and Borrelia. The objective of this work was to diagnose, through molecular and histopathological means, diseases transmitted by ticks in domestic and wild animals in the states of Paraíba and Pernambuco. The study was carried out in the regions of Agreste and Litoral Paraibano and the Zona da Mata Pernambucana region, which are fragments of the Atlantic Forest. The retrospective study was carried out by surveying cases from the pathological diagnosis book from 2013 to 2020, as well as the prospective study, between the years 2021 and 2022. For histopathological evaluation, the organs that presented lesions and their histological location were described. Fresh blood samples or tissues fixed in formalin and embedded in paraffin had DNA extracted and subjected to Polymerase Chain Reaction (PCR). Detection/confirmation of tick-borne pathogens was assessed through amplification of specific genes using primer oligonucleotides previously described for the specific pathogen. For better understanding, this thesis was divided into a literature review and three chapters, they are: Chapter 1 “Diseases transmitted by ticks in small animals in Paraíba”; Chapter 2 “Diseases transmitted by ticks in production animals in Paraíba and Pernambuco”; and Chapter 3 “Tick-borne diseases in wild animals in Paraíba”. As a result, it is possible to diagnose diseases transmitted by ticks in domestic and wild animals in the states of Paraíba and Pernambuco, through histopathological examination and molecular means. Through diagnosis, it is possible to map collection sites for molecular diagnosis and characterize the species of pathogens that occur in scientific areas, as well as detect which of them are considered zoonotic and contribute to disease control and prevention programs within the single health system.
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8
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LEANDRO LAMARTINE LOPES ROCHA
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Characterization of mammary papillomas in goats raised in the Northeast region of Brazil
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Leader : HUBER RIZZO
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MEMBRES DE LA BANQUE :
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PRISCILLA FAJARDO VALENTE PEREIRA
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GLAUCO JOSÉ NOGUEIRA DE GALIZA
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HUBER RIZZO
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MÁRIO FELIPE ALVAREZ BALARO
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TATIANE RODRIGUES DA SILVA
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Data: 27 juin 2024
Ata de defesa assinada:
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The present study aimed to characterize papillomatosis in dairy goats raised in the Northeast region of Brazil. A total of 58 dairy goat farms were visited, where an investigative questionnaire was applied, and animals from the herds were examined for lesions compatible with papillomatosis. In total, 1885 goats of different breeds, ages, and genders from thirteen municipalities in RN, PB, and PE were examined. Twenty-one goats (1.11%) with characteristic papillomatosis lesions were identified on 14 properties. Those with lesions underwent tissue collection using a dermatological punch (stored in formalin for histopathological analysis) and crust removal (frozen for molecular diagnosis). However, only 20 animals were macroscopically and microscopically examined. The majority, 76.1% (16/21), were of the Saanen breed. All observed lesions were on the udder (base, body, and teat), with 45% (9/20) in two areas (body and teat or base and body) and 35% (7/20) in only one area (body or teat). The characteristics of the papillomas found were: 25% (5/20) atypical, 25% (5/20) pedunculated, 15% (3/20) typical, 15% (3/20) atypical sessile, 15% (3/20) filamentous, and 5% (1/20) mixed (filamentous + pedunculated). Regarding lesion intensity, mild, intense, and moderate grades predominated at 65% (13/20), 30% (6/20), and 5% (1/20), respectively. The most common color observed was brown (80% or 16/20), followed by gray and skin color (10% or 2/20 each). Notably, 20% (4/20) of the goats presented exuberant neoplastic formations. Histopathological examinations demonstrated keratinization in all samples, with 50% (10/20) showing high intensity (+++), 30% (6/20) mild intensity, and 20% (4/20) moderate intensity. In the statistical analyses, the final multivariable model identified significant risk factors: lack of shade in the pen (PR=4.636), failure to isolate sick animals (PR=5.942), and needle reuse (PR=7.185). Another significant variable was that all goats were female adults, yielding a final model with a sample size of n = 1089. Additionally, lactating adult females were found to be another risk factor (PR=2.807). Finally, four animals underwent molecular examinations, revealing the presence of BPV-2 and two purported new types of BPV (putative new type - BAPV-5 and putative new - BPV-7), as well as co-infection with BPV-5 and BPV-13 in the same sample.
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9
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MARIA SHEILA DA SILVA FERREIRA
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EXPERIMENTAL SKIN WOUNDS OF DOGS (Canis familiaris) TREATED WITH ROSEMARY OIL (Rosmarinus Officinalis L.) OZONIZED
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Leader : JOAQUIM EVENCIO NETO
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MEMBRES DE LA BANQUE :
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JOAQUIM EVENCIO NETO
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GRAZIELLE ANAHY DE SOUSA ALEIXO CAVALCANTI
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LILIAN SABRINA SILVESTRE DE ANDRADE
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ANA KARINA RODRIGUES DA MOTA
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MARIA CRISTINA DE OLIVEIRA CARDOSO COELHO
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Data: 28 juin 2024
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In Brazil, medicinal plants are widely used in Veterinary Medicine to aid in the wound healing process. One such plant is rosemary (Rosmarinus officinalis L.), considered sacred by ancient peoples. Another important tool employed for this purpose is ozone gas in the formulation of creams and oils. When a substance undergoes ozone processing, its effects are potentiated, leading to what is now known as ozone therapy. This experiment aimed to perform a morphometric and histopathological evaluation of surgically created wounds in dogs (Canis familiaris) healing by secondary intention and treated with ozonized rosemary oil. Surgical wounds were created using an 8mm punch, with each animal serving as both control and treatment simultaneously (two wounds per animal). Twenty dogs aged between one and four years, weighing between seven and 20 kg, were divided into four groups (G3, G7, G14, and G21), each containing five animals (n=5). Wounds were evaluated on days three (D3), seven (D7), 14 (D14), and 21 (D21) postoperatively, respectively. Each animal was represented by two subgroups: the control group (CG, treated with 0.9% saline solution) and the treated group (GT, treated with ozonized rosemary oil). This procedure was repeated every 24 hours for 21 days, during which all animals were clinically assessed. On days D3, D7, D14, and D21, lesions from all animals in each subgroup were biopsied, with an incision made in an ellipse encompassing intact skin and all healing tissue. After sample collection, they were stained with Hematoxylin-Eosin for histopathological examination with morphological and morphometric assessments. The data obtained were subjected to the Kruskal-Wallis test and complemented by the Tukey-Kramer test (p<0.05). The wound healing effect of ozonized rosemary oil was observed in wound contraction (p=0.05) in GT compared to CG on D3, and in angiogenesis (p=0.001) in GT compared to CG on D7 and D14. Morphologically, there was less inflammation in GT on D3, D14, and D21, and less crust formation on D3 and D21 compared to CG, although there was no statistical difference between them. It is concluded that the combination of rosemary essential oil with ozone therapy favored the process of wound healing by secondary intention in canine cutaneous wounds.
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DENISE CERQUEIRA DE SOUSA
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QUANTITATIVE COMPUTERIZED TOMOGRAPHY OF LAYING HENS IN EXTENDED LAYING CYCLE
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Leader : FABIANO SELLOS COSTA
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MEMBRES DE LA BANQUE :
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FABIANO SELLOS COSTA
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GESSICA GISELLE ALMEIDA SILVA ARAUJO
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LORENA ADAO VESCOVI SELLOS COSTA
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MANOEL LOPES DA SILVA FILHO
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THAIZA HELENA TAVARES FERNANDES
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Data: 28 juin 2024
Ata de defesa assinada:
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The aim of this study was to obtain bone mineral densitometry and liver radiodensity values from laying hens in a prolonged laying cycle. The high production rates of laying hens have increased the physiological performance requirements of some organs, especially bones and liver. This intense activity can result in pathologies, the most relevant being osteoporosis and hepatic lipidosis, compromising the well-being of these animals. Quantitative computed tomography is one of the diagnostic methods used for bone and liver evaluation. This technique allows precise definition of the radiodensity of these organs, contributing to the diagnosis and monitoring of lesions. The first study aimed to obtain bone mineral density measurements from hens. Tomographic examinations were performed on 10 animals and after image acquisition, the right and left tibias were analyzed by means of multiplanar reconstruction and cross-sections. The mean value of 847.19 ± 100.47 mg/cm3 was obtained in the bone mineral density of the cortical bone of the tibias. The second study aimed to obtain measurements of hepatic radiodensity in chickens through tomographic examinations. The images were analyzed using multiplanar reconstructions and cross-sections, and the regions of interest (ROI) were measured in the right and left hepatic lobes. The mean hepatic radiodensity value was 45.41 ± 8.85 HU. These data may contribute to the diagnosis of lesions in the skeletal system and the detection of liver lesions, providing information for the adoption of corrective and preventive management measures, resulting in improvements in animal welfare and in the development of the poultry sector.
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ROMULO NUNES ROCHA
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Electroretinographic and electrocardiographic recordings in dogs submitted to the combination of dexmedetomidine
and opioids.
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Leader : FABRICIO BEZERRA DE SA
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MEMBRES DE LA BANQUE :
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FABRICIO BEZERRA DE SA
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GRAZIELLE ANAHY DE SOUSA ALEIXO CAVALCANTI
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JOAQUIM EVENCIO NETO
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ELTON HUGO LIMA DA SILVA SOUZA
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RINALDO CAVALCANTE FERRI
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Data: 28 juin 2024
Ata de defesa assinada:
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Vision assessment is essential for diagnosing various ophthalmic pathologies that affect dogs. Electroretinography (ERG) is na assessment of retinal function to light responses and is recommended to be performed with the patient under sedation or general anesthesia to minimize the presence of ruids, however anesthetic agents can impact the results of electroretinographic waves. This study aimed to determine changes in the total field electroretinogram (ERG-ct) in dogs subjected to combination of dexmedetomidine and opioids, as well as to evaluate electrocardiographic changes and degrees of sedation. The animals were distributed into three groups. GDBUT received dexmedetomidine associated with butorphanol, GDMET received dexmedetomidine associated with methadone and GDBUP received dexmedetomidine associated with buprenorphine. GDBUT showed changes in the implicit times of waves “a” and “b” and in the response to Flicker, GDMET did not show changes to photopic stimulus, but differed in terms of Flicker. GDBUP did not present any changes. Regarding the electrocardiogram, the three groups varied in terms of heart rate and showed differences in the amplitude or duration of P wave. The GDBUT showed differences in the duration of the PR and QT intervals, amplitude of the R and T waves. In GDMET, differences were observed in PR and QT intervals and the amplitude of the T wave. The GDBUP was different in amplitudes of the P and T waves and significant differences in the PR and QT intervals. Regarding the degree of sedation, GDBUT scored higher than other groups and GDBUP was the group that scored least. It can be concluded that the animals that received the association with buprenorphine did not show changes in the values of the ERG-ct waves and suffered fewer impacts on the Ecg waves, however they were ones that presented lower rates in terms of the degree of sedation.
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12
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JÉSSICA CRISTIANNE MAZER BERNARDI
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Epidemiology and molecular characterization of hemoparasites in cats domestic birds (Felis catus) in the state of Pernambuco, Brazil.
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Leader : FABIO DE SOUZA MENDONCA
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MEMBRES DE LA BANQUE :
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FABIO DE SOUZA MENDONCA
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JESSICA DE TORRES BANDEIRA
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JULIANA FORTES VILARINHO BRAGA
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TELMA DE SOUSA LIMA
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VICTOR FERNANDO SANTANA LIMA
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Data: 29 août 2024
Ata de defesa assinada:
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With the increase in the acquisition of cats as companion animals and their frequent visits to public areas, there has been a rise in the number of people exposed to the risk of parasitic infections. This is due to the fact that cats harbor various zoonotic agents, which can be transmitted through different routes. Although emerging diseases caused by hemoparasites in companion animals have been investigated in recent years, there are few reports of epidemiological and molecular studies characterizing these pathogens in domestic cats. Therefore, the aim of this study was to conduct an epidemiological survey and molecular characterization of gram-negative bacteria such as Ehrlichia, Mycoplasma, and protozoa of the genera Babesia and Leishmania sp. in domestic cats in the state of Pernambuco. For this purpose, blood samples were collected via cephalic, jugular, or lateral saphenous venipuncture, and DNA was extracted from 200 μl of blood using the Purelink® Genomic DNA Kits (Invitrogen® by Life Technologies®), following the manufacturer's instructions. PCR was performed using specific primers for each targeted agent, and the amplification products were subjected to 1.5% agarose gel electrophoresis, stained with ethidium bromide (0.5 µg/mL). Of the 124 samples analyzed, 36 (29%) were positive for Mycoplasma haemofelis, 1 (0.8%) was positive for Leishmania infantum and no sample was positive for Babesia sp. and Ehrlichia sp. through molecular diagnosis. For better understanding, this thesis qualification work was divided into a literature review and two chapters, namely: Chapter 1 "Prevalence and risk factors associated with Mycoplasma haemofelis infection in domestic cats in the metropolitan region of Recife, Pernambuco, Brazil"; Chapter 2 " Molecular and parasitological detection of Leishmania sp. in peripheral blood of domestic cats from the state of Pernambuco, Brazil – report of three cases."
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13
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RAFAEL ALEXANDRE QUEIROZ
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IMMEDIATE POST-MORTEM EVALUATION OF THE CARPO-RADIAL EXTENSOR REFLEX IN GOATS AND SHEEP BEFORE AND AFTER RADIAL NERVE SECTION
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Leader : JOAQUIM EVENCIO NETO
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MEMBRES DE LA BANQUE :
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ALEXANDRE TADEU MOTA MACEDO
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BRUNO MARTINS ARAUJO
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EDUARDO ALBERTO TUDURY
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FABRICIO BEZERRA DE SA
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JOAQUIM EVENCIO NETO
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Data: 29 août 2024
Ata de defesa assinada:
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Considering the involvement of goats and sheep in neurological diseases that can affect the cervico-thoracic spinal intumescence and the components of the brachial plexus, there arises a need for neurological evaluation of these small ruminants, with precision in the information obtained from this examination. This research aimed to verify the reliability of the carpo-radial extensor reflex for diagnosing neurological alterations in these two species. For this purpose, 30 sheep and 30 goats, over five months old, with standard body and muscle conformation for these species, without abnormalities in gait, were selected, and the carpo-radial extensor reflex was tested in both thoracic limbs. The reflexes were evaluated with the aid of a neurological percussion hammer, initially before slaughter, immediately post-slaughter relaxation, and after radial nerve section. The results were documented by species after three consecutive evaluations in each limb. The responses were evaluated quantitatively and qualitatively and classified as 0 (absence of response), 1 (diminished response), 2 (normal response), and 3 (increased response). The reflex intensity data showed abnormal distribution and were evaluated in pairs using the non-parametric Wilcoxon test. There was a significant difference in responses between the in vivo phase compared to the immediate post-mortem and post-neurotomy phases, which progressively decreased but without areflexia, except in one sheep. As already proven in dogs and cats, there was a carpal extension response in 100% of goats and 96.66% of sheep, even after cardiac arrest with complete disappearance of the flexor reflex (withdrawal reflex), and even after radial nerve section, indicating that in these two species, they are not spinal myotatic reflexes related to a reflex arc. As occurs in humans, dogs, and cats, the results thus characterized it as an idiomuscular response, making the carpo-radial extensor reflex unreliable for neurological evaluation of small ruminants..
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14
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SAULO ROMERO FELIX GONÇALVES
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Epidemiological, Histomorphological, and Immunohistochemical Aspects of Canine Lymphomas in Northeastern Brazil (2012-2022)
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Leader : ANDREA ALICE DA FONSECA OLIVEIRA
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MEMBRES DE LA BANQUE :
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ANDREA ALICE DA FONSECA OLIVEIRA
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LORENA GABRIELA ROCHA RIBEIRO
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MARCIA BERSANE ARAUJO DE MEDEIROS TORRES
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RAQUEL ANNES FAGUNDES SILVA
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TELMA DE SOUSA LIMA
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Data: 30 août 2024
Ata de defesa assinada:
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Lymphoma is the most common malignant hematopoietic neoplasm affecting dogs. In veterinary medicine, there are few studies demonstrating the occurrence of the disease in Brazilian regions, especially in the Northeast. Therefore, considering the scarce studies on canine non-Hodgkin lymphoma (NHL) in Brazil, this work aimed to survey cases of canine non-Hodgkin lymphoma in Northeastern Brazil from 2012 to 2022, focusing on epidemiological, histomorphological, and immunophenotypic aspects. The survey resulted in the development of two studies. For the first study, titled “Canine Lymphoma in Northeastern Brazil: Epidemiological, Histomorphological, and Immunophenotypic Aspects,” 149 samples with a previous diagnosis of canine lymphoma were selected. The analyzed samples came from eight states in Northeastern Brazil (Alagoas, Bahia, Ceará, Paraíba, Pernambuco, Piauí, Rio Grande do Norte, and Sergipe). The average age of the affected animals was 8.38 years, with 55.03% (82/149) being males and 40.26% (60/149) females; of these, 30.87% (46/149) were mixed-breed dogs and 10.07% (15/149) were Poodles. Regarding the evaluated tissues, 34.23% (51/149) corresponded to lymph nodes, 30.87% (46/149) to skin, and 26.17% (39/149) to the spleen. Based on histomorphological and immunophenotypic results, 39.60% (59/149) were B-cell lymphomas, with Diffuse Large B-Cell Lymphoma (DLBCL) (45.76%; 27/59) and Splenic Marginal Zone Lymphoma (SMZL) (32.20%; 19/59) being the most observed, and 38.26% (57/149) were T-cell lymphomas, with Non-Epitheliotropic Cutaneous Lymphomas (43.85%; 25/57) and Epitheliotropic Lymphomas (17.54%; 10/57) being the most frequent. Non-neoplastic lymphoproliferative disorders were found in 6.04% (9/149). In the second study, titled “Intravascular Large T-Cell Lymphoma – Report of Two Cases,” the aim was to report the anatomical and immunohistochemical aspects of two dogs diagnosed with Intravascular Large T-Cell Lymphoma. For this, two dogs were necropsied: an Akita, male, 4 years old, and a Rhodesian Ridgeback, female, 10 years old. Both presented neurological clinical signs characterized by ataxia, seizures, and difficulty walking. Macroscopically, hepatomegaly, splenomegaly, and necrotizing encephalitis were observed. Microscopically, a predominance of large intravascular neoplastic lymphocytes was noted, with positive immunohistochemical staining for CD3 and negative for CD20, concluding that both cases were Intravascular Large T-Cell Lymphoma. The epidemiological and immunophenotypic profile of canine non-Hodgkin lymphoma cases in Northeastern Brazil does not differ from other profiles published in the country and worldwide. The increase in cutaneous lymphomas may signal some interference from edaphoclimatic aspects that may occur in our region, reinforcing the need for studies that consider environmental factors. The construction of a capillarized network of information on neoplasms occurring in Northeastern Brazil, such as lymphoma, would be of fundamental importance, allowing the monitoring of development indices and biological behavior, as already exists in human medicine.
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15
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LUCAS CARVALHO PEREIRA
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Influence of Vitrification on the Proteome of In Vitro-Produced Bovine Embryos
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Leader : MARCOS ANTONIO LEMOS DE OLIVEIRA
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MEMBRES DE LA BANQUE :
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MARCOS ANTONIO LEMOS DE OLIVEIRA
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FABIANA APARECIDA CAVALCANTE SILVA
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FELIPE AUGUSTO BOUDOUX MARTINS SALES
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JOANE ISIS TRAVASSOS VIEIRA
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JOSÉ CARLOS FERREIRA DA SILVA
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Data: 30 août 2024
Ata de defesa assinada:
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This thesis is composed of two chapters, each exploring different aspects of cryopreservation and proteomic analysis in in vitro-produced bovine embryos. The first chapter evaluates the impact of vitrification on embryo morphology and proteomic profile. Fresh and vitrified embryos were analyzed, showing a significant reduction in the number of blastomeres in vitrified embryos, associated with alterations in the proteomic profile, particularly in proteins related to cellular stress. These results indicate that vitrification compromises embryonic viability, highlighting the need to improve cryopreservation protocols to enhance outcomes in assisted reproduction. The second chapter compares the viability and proteomic profile of embryos subjected to vitrification and direct transfer. Four groups of embryos were analyzed, focusing on proteins involved in cell stability and stress response. Vitrified embryos that maintained development until re-expansion and those subjected to direct transfer showed higher viability, suggesting the importance of additional culture for vitrified embryos and highlighting direct transfer as an effective alternative to vitrification. These studies provide valuable insights for optimizing cryopreservation protocols in assisted reproduction programs, focusing on proteomic approaches to improve embryo selection and viability.
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16
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RENAN HENRIQUE DOS SANTOS FAGUNDES
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Proteomic Evaluation of Follicular Fluid and In Vitro-Produced and Vitrified Goat and Sheep Embryos
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Leader : MARCOS ANTONIO LEMOS DE OLIVEIRA
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MEMBRES DE LA BANQUE :
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MARCOS ANTONIO LEMOS DE OLIVEIRA
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FABIANA APARECIDA CAVALCANTE SILVA
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FELIPE AUGUSTO BOUDOUX MARTINS SALES
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JOANE ISIS TRAVASSOS VIEIRA
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JOSÉ CARLOS FERREIRA DA SILVA
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Data: 30 août 2024
Ata de defesa assinada:
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This thesis is composed of three chapters on different themes related to the use of proteomics for evaluating reproductive aspects of goats and sheep. The first chapter presents a review of the role of proteomics in assisted reproduction in small ruminants, focusing on goats and sheep. The importance of follicular fluid as a critical environment for oocyte maturation and embryonic development is highlighted, being composed of proteins, hormones, and other essential biochemical factors. The review explores how proteomics allows the identification of biomarkers for the selection of oocytes and embryos, optimizing assisted reproduction protocols. Studies indicate that differences in the proteomic profile between species can influence oocyte competence and reproductive outcomes, reinforcing the need for species-specific approaches. The second chapter presents a comparative analysis of the follicular fluid of goats (Capra hircus) and sheep (Ovis aries), aiming to identify biomarkers of oocyte competence and embryonic development. Significant differences were observed between the species, with goats showing a higher presence of proteins linked to coagulation and healing, while sheep exhibited proteins related to immune response. The analysis of protein-protein interaction networks revealed distinct molecular pathways in each species, highlighting the need for species-specific assisted reproduction protocols. The third chapter addresses the proteomic analysis of embryos produced in vitro and subjected to vitrification, detailing the impact of this process on the proteomic profile and embryo viability. Critical proteins associated with oxidative stress and cellular homeostasis were identified, with specific differences between species. The research emphasizes the need for additional studies to characterize unclassified proteins, aiming to optimize vitrification and improve assisted reproduction programs.
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17
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APOLÔNIA AGNES VILAR DE CARVALHO BULHÕES
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STUDY OF THE HEALING ACTIVITY OF BASIL ESSENTIAL OIL (Ocimum basilicum L.) IN SKIN WOUNDS OF RATS
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Leader : JOAQUIM EVENCIO NETO
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MEMBRES DE LA BANQUE :
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FABRICIO BEZERRA DE SA
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JOAQUIM EVENCIO NETO
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LIGIA REIS DE MOURA ESTEVÃO
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LIRIANE BARATELLA EVENCIO
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MANUEL DE JESUS SIMÕES
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Data: 11 oct. 2024
Ata de defesa assinada:
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Ocimum basilicum L. is popularly known as basil, basil and basil, native to tropical Asia, rich in essential oil that mainly has anti-inflammatory and antimicrobial activity. The objective of this work was to evaluate the healing activity of basil essential oil (Ocimum basilicum L.) on skin wounds in rats. The leaves were collected at the DoisIrmãos Campus of the Federal Rural University of Pernambuco (UFRPE). The oil was extracted using the hydrodistillation technique, using the Clevenger apparatus and analyzed by gas chromatography coupled to mass spectroscopy (GC/MS), subsequently, the preparation of an ointment. For the healing activity, 30 albino Wistar rats (Rattus norvergicus albinus) were used, distributed into two experimental groups of 15 animals each (GT – animals with wounds treated with ointment containing 10% Ocimum basilicum essential oil; CG – animals with wounds treated with base ointment), subdivided into 3 groups of 5 animals each, corresponding to postoperative times (PO): 3, 7 and 14 days. Four surgical wounds were made in each animal, in the right and left dorsolateral thoracic region, with the aid of an 8 mm diameter punch, treated daily and evaluated at 3, 7 and 14 days PO, regarding the degree of contraction and evaluation. macroscopic, morphological and morphometric regarding the quantification of blood vessels. The phytochemical study revealed the presence of terpenes and obtained 0.63% essential oil yield. Regarding the degree of wound contraction, there was no statistical difference between the groups tested. Macroscopically, the wounds in the treated group showed less inflammation, hyperemia and secretion, more developed granulation tissue, formation of a lighter colored low crust and the lesion was less firm, when compared to the control group. The quantification of blood vessels was significantly higher in the treated group, when compared to the control group, on day 7 PO (p=0.04). In the morphological evaluation, the GT showed a lower concentration of inflammatory cells, greater and better filling of the granulation tissue by collagen fibers, less crust formation, a greater concentration of newly formed vessels and greater deposition of extracellular matrix. It is concluded that the ointment based on essential oil from the leaves of Ocimum basilicum L. at 10% proved to be efficient in the healing process of skin wounds in rats.
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18
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EWERTON BORGES DE LIMA
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Identification of biomarkers through proteomic analysis of mammary neoplasms in female dogs (Canis Lupus Familiaris)
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Leader : MARCOS ANTONIO LEMOS DE OLIVEIRA
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MEMBRES DE LA BANQUE :
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GRAZIELLE ANAHY DE SOUSA ALEIXO CAVALCANTI
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LILIAN SABRINA SILVESTRE DE ANDRADE
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FABIANA APARECIDA CAVALCANTE SILVA
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JOANE ISIS TRAVASSOS VIEIRA
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JOSÉ CARLOS FERREIRA DA SILVA
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Data: 3 déc. 2024
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The prevalence of mammary tumors in female dogs has significantly increased, becoming one of the leading causes of mortality in companion animals. These tumors exhibit histopathological characteristics, biological behavior, and metastatic patterns similar to those observed in human breast cancer, making female dogs important translational models. The identification of biomarkers has proven essential for early diagnosis, clinical management, and the development of personalized therapies, particularly with the advancement of technologies such as proteomics. In human oncology, these technologies are already widely utilized, and their potential in veterinary medicine has been expanding with the development of new techniques. This study is divided into two main parts. The first part consists of a literature review on the application of proteomics in the study of mammary neoplasms in female dogs. The review addresses the most promising proteomic techniques, their applicability in biomarker identification, and the existing challenges. It highlights the importance of mass spectrometry and bioinformatics analyses to understand the molecular mechanisms influencing tumor progression and therapeutic resistance. Additionally, the advances in the use of functional biomarkers for disease monitoring, diagnosis, and prognosis are discussed, as well as future challenges in integrating these discoveries into clinical practice. The second part presents an experimental study that performed a differential proteomic analysis of benign mammary neoplasms, such as tubular adenoma grade 1, and malignant neoplasms, such as micropapillary carcinoma grade 1 and tubulopapillary carcinoma grade III. Mass spectrometry methods with a label-free approach and bioinformatics analysis using the MaxQuant software were utilized. The study identified differentially expressed proteins, including alpha-actin, alpha-actinin, and matrix metalloproteinases, associated with aggressive and invasive tumor behavior. Moreover, alterations in metabolic pathways related to signal transduction and energy metabolism were observed, suggesting their role in tumor progression. These findings reinforce the relevance of proteomic analysis in identifying new biomarkers and molecular mechanisms involved in canine mammary neoplasms. Despite advancements, clinical validation of the identified biomarkers is crucial for their implementation in veterinary practice, contributing to more accurate diagnoses and personalized treatments.
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19
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JOSÉ DOS PASSOS DE QUEIROZ JÚNIOR
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Application of proteomic analysis in the prospecting of biomarkers of feline breast carcinoma
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Leader : MARCOS ANTONIO LEMOS DE OLIVEIRA
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MEMBRES DE LA BANQUE :
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GRAZIELLE ANAHY DE SOUSA ALEIXO CAVALCANTI
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LILIAN SABRINA SILVESTRE DE ANDRADE
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EDVALDO LOPES DE ALMEIDA
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FABIANA APARECIDA CAVALCANTE SILVA
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JOSÉ CARLOS FERREIRA DA SILVA
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Data: 3 déc. 2024
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Afficher le Résumé
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This thesis is composed of two works. The first is a literature review on feline mammary carcinoma, an extremely aggressive malignant disease with low survival rates and few therapeutic options beyond mastectomy. In this context, the review explores the importance of proteomics as an essential tool for understanding the molecular mechanisms underlying the development of this cancer. Advances in proteomic techniques and their application in identifying biomarkers, both for diagnosis and the development of more effective and targeted therapies, are highlighted. Additionally, the study addresses how proteomic analysis can contribute to unraveling tumor behavior, growth processes, and metastasis, providing a solid foundation for future research. The second work, on the other hand, is an experimental study that directly applies proteomic techniques in the context of feline mammary carcinoma. This study seeks to validate the possibilities presented in the review by analyzing tumor samples to identify specific protein alterations. The objective is to characterize the cancer's proteomic profile, verify differential protein expression, and identify potential biomarkers that can be used for both diagnosis and treatment. This experimental work reinforces the practical potential of proteomics, demonstrating how it can be used to develop more precise therapeutic strategies and improve the prognosis of such a challenging disease. Together, the two studies highlight the relevance of integrating molecular science into the clinical management of feline mammary carcinoma, offering new perspectives for veterinary oncology.
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