28 results on '"CÂMARA, Diogo Ribeiro"'
Search Results
2. Neonatal Clinical Assessment of the Puppy and Kitten: How to Identify Newborns at Risk?
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Pereira, Keylla Helena Nobre Pacífico, Fuchs, Kárita da Mata, Mendonça, Júlia Cosenza, Xavier, Gleice Mendes, Câmara, Diogo Ribeiro, Cruz, Raíssa Karolinny Salgueiro, and Lourenço, Maria Lucia Gomes
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NEWBORN screening ,KITTENS ,TEST interpretation ,PUPPIES ,NEWBORN infants - Abstract
Simple Summary: Despite advances in puppy and kitten neonatology in recent years, mortality rates for these patients are still high, making the neonatal period a challenge for veterinarians and owners. Early recognition of newborns at risk allows for rapid intervention, increasing the chance of neonatal survival. To this end, an adequate clinical assessment is essential, which demands knowing the particularities of these patients and the reference parameters for age. Neonatal puppies and kittens have physiological and anatomical characteristics that differ from those of adult animals, which impacts the interpretation of physical examination and complementary tests. The veterinarian must be familiar with the clinical, laboratory, and imaging aspects observed in neonates. It is necessary to thoroughly evaluate the litter and the mother to notice the most subtle signs of illness and advise the owner to constantly monitor the newborns, quickly sending them to specialized care. This review describes how to perform clinical assessments of newborns systematically and recognize clinical signs of neonatal changes or affections in puppies and kittens. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Oviductal extracellular vesicles miRNA cargo varies in response to embryos and their quality
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Hamdi, Meriem; https://orcid.org/0000-0002-5210-4915, Sánchez, José María, Fernandez-Fuertes, Beatriz, Câmara, Diogo Ribeiro; https://orcid.org/0000-0002-9873-7419, Bollwein, Heinrich; https://orcid.org/0000-0003-1982-5101, Rizos, Dimitrios; https://orcid.org/0000-0001-6813-3940, Bauersachs, Stefan; https://orcid.org/0000-0003-2450-1216, Almiñana, Carmen; https://orcid.org/0000-0003-0495-7099, Hamdi, Meriem; https://orcid.org/0000-0002-5210-4915, Sánchez, José María, Fernandez-Fuertes, Beatriz, Câmara, Diogo Ribeiro; https://orcid.org/0000-0002-9873-7419, Bollwein, Heinrich; https://orcid.org/0000-0003-1982-5101, Rizos, Dimitrios; https://orcid.org/0000-0001-6813-3940, Bauersachs, Stefan; https://orcid.org/0000-0003-2450-1216, and Almiñana, Carmen; https://orcid.org/0000-0003-0495-7099
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BACKGROUND: Increasing evidence points to an active role of oviductal extracellular vesicles (oEVs) in the early embryo-maternal dialogue. However, it remains unclear whether oEVs contribute to the recognition of the presence of embryos and their quality in the oviduct. Hence, we examined whether the molecular cargo of oEVs secreted by bovine oviduct epithelial cells (BOEC) differs depending on the presence of good (≥ 8 cells, G) or poor (< 8 cells, P) quality embryos. In addition, differences in RNA profiles between G and P embryos were analyzed in attempt to distinguish oEVs and embryonic EVs cargos. METHODS: For this purpose, primary BOEC were co-cultured with in vitro produced embryos (IVP) 53 h post fertilization as follows: BOEC with G embryos (BGE); BOEC with P embryos (BPE); G embryos alone (GE); P embryos alone (PE); BOEC alone (B) and medium control (M). After 24 h of co-culture, conditioned media were collected from all groups and EVs were isolated and characterized. MicroRNA profiling of EVs and embryos was performed by small RNA-sequencing. RESULTS: In EVs, 84 miRNAs were identified, with 8 differentially abundant (DA) miRNAs for BGE vs. B and 4 for BPE vs. B (P-value < 0.01). In embryos, 187 miRNAs were identified, with 12 DA miRNAs for BGE vs. BPE, 3 for G vs. P, 8 for BGE vs. GE, and 11 for BPE vs. PE (P-value < 0.01). CONCLUSIONS: These results indicated that oEVs are involved in the oviductal-embryo recognition and pointed to specific miRNAs with signaling and supporting roles during early embryo development.
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- 2024
4. Na+, K+-ATPase in ram sperm – Its importance for kinematics, localisation and expression on the sperm surface
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de Oliveira, Aline Saraiva, Câmara, Diogo Ribeiro, Batista, André Mariano, Silva, Robespierre Augusto Joaquim Araújo, Arruda, Lúcia Cristina Pereira, Monteiro, Millena Maria, Costa, Joana Amélia de Senna, and Guerra, Maria Madalena Pessoa
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- 2019
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5. Venereal transmission of Toxoplasma gondii in goats after a buck was experimentally infected
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Wanderley, Flaviana Santos, Porto, Wagnner José Nascimento, Câmara, Diogo Ribeiro, de Oliveira, Vinicius Vasconcelos Gomes, Garcia, João Luiz, de Albuquerque, Pedro Paulo Feitosa, da Fonseca Oliveira, Andréa Alice, and Mota, Rinaldo Aparecido
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- 2015
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6. Relationship between Na/K-ATPase in thawed sperm and fertility of Angus bulls
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Marques, Juliana Carla Cavalcanti, primary, Cezar, Allan Rodolf Ribeiro, additional, Nascimento Júnior, Agnelo Douglas do, additional, Silva, Juliane Pereira da, additional, Batista, André Mariano, additional, Guerra, Maria Madalena Pessoa, additional, and Câmara, Diogo Ribeiro, additional
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- 2023
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7. Post-thaw quality of ram sperm frozen with different concentrations of low-density lipoproteins associated with non-enzymatic antioxidants
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Snoeck, Paola Pereira das Neves, primary, Câmara, Diogo Ribeiro, additional, Moura, Luís Cláudio de Oliveira, additional, Silva, Maíra Corona da, additional, Machado-Neves, Mariana, additional, Teixeira-Neto, Milton Rezende, additional, and Henry, Marc, additional
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- 2023
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8. IMPORTÂNCIA DO RECONHECIMENTO LEGISLATIVO FEDERAL BRASILEIRO SOBRE CANINOS E FELINOS DOMÉSTICOS COMUNITÁRIOS E ORGANIZAÇÃO DE AMBIENTES DE ACOLHIMENTO EM APOIO À SAÚDE ÚNICA
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Melo, Evelynne Hildegard Marques de, primary, Amaral, Mariana Ferreira do, additional, Câmara, Diogo Ribeiro, additional, and Nunes, Annelise Castanha Barreto Tenório, additional
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- 2022
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9. IMPORTÂNCIA DA TRÍADE BÁSICA DE POLÍTICAS PÚBLICAS SOBRE CANINOS E FELINOS DOMÉSTICOS PARA A SAÚDE ÚNICA NO BRASIL: ANÁLISE COMPARATIVA NACIONAL E INTERNACIONAL
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Melo, Evelynne Hildegard Marques de, primary, Amaral, Mariana Ferreira do, additional, Câmara, Diogo Ribeiro, additional, and Nunes, Annelise Castanha Barreto Tenório, additional
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- 2022
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10. INICIATIVAS DE POLÍTICAS PÚBLICAS PARA DESTINO DOS CADÁVERES DE CÃES E GATOS NAS CIDADES BRASILEIRAS: ANÁLISE DAS EMENTAS E JUSTIFICTIVAS LEGISLATIVAS
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Melo, Evelynne Hildegard Marques de, primary, Amaral, Mariana Ferreira do, additional, Câmara, Diogo Ribeiro, additional, and Nunes, Annelise Castanha Barreto Tenório, additional
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- 2022
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11. EXPERIMENTAL VAGINAL INFECTION OF GOATS WITH SEMEN CONTAMINATED WITH THE "CPG" STRAIN OF TOXOPLASMA GONDII
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Wanderley, Flaviana Santos, Porto, Wagnner José Nascimento, Câmara, Diogo Ribeiro, da Cruz, Nadine Louise Nicolau, de Oliveira Feitosa, Bruna Catarina, Freire, Roberta Lemos, de Moraes, Érica Paes Barreto Xavier, and Mota, Rinaldo Aparecido
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- 2013
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12. Vincristine sulfate treatment influence on kidney function of female dogs with transmissible venereal tumor
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Souza, Jessyca Vanderlei de Albuquerque, Gonçalves, Fernanda Danielle Maria, Lira-Junior, Arnaldo Cesar Oliveira Gomes, Escodro, Pierre Barnabé, Câmara, Diogo Ribeiro, and Notomi, Marcia Kikuyo
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Lesão renal ,Dimetilarginina simétrica ,Symmetric dimethylarginine ,Gama-glutamil transferase ,Chemotherapy ,Marcador renal ,Renal injury ,Quimioterapia ,Renal marker ,Gamma-glutamyl transferase - Abstract
Os agentes quimioterápicos possuem efeitos citostáticos indesejáveis e não seletivos. Considerando a vulnerabilidade renal à toxicidade induzida por drogas, este estudo avaliou a lesão renal causada pelo sulfato de vincristina (VS) em 12 cadelas com diagnóstico de tumor venéreo transmissível (TVT). Os animais foram tratados com VS (0,025 mg / kg IV) a cada sete dias, durante quatro semanas. No transcurso do tratamento, os animais foram submetidos a exame clínico, hemograma, dosagem sérica de dimetilarginina simétrica (SDMA), nitrogênio ureico sanguíneo (BUN), creatinina, alanina aminotransferase e fosfatase alcalina. Além disso, foram realizadas análises de urina e medições de gama-glutamil transferase (GGT) urinária. Todos os parâmetros foram mensurados em três tempos, antes do início do tratamento (T0), aos 14 dias (T1) e aos 28 dias (T2). Durante o período do estudo, não houve alterações nas concentrações de ureia ou creatinina séricas, na gravidade específica da urina ou proteinúria persistente. Além disso, a medição de GGT urinária não indicou lesões tubulares, e elevação consistente de SDMA foi encontrada em apenas um paciente acima do intervalo de referência. Os resultados mostraram que a terapia semanal com VS como agente único por 28 dias não induz lesão renal na maioria dos casos. Chemotherapy agents have some undesirable and non-selective cytostatic effects. Considering that kidneys are vulnerable to drug-induced toxicity, this study evaluated renal injury caused by vincristine sulfate (VS) in 12 female dogs diagnosed with transmissible venereal tumor (TVT). The animals were treated with VS (0.025 mg/kg IV) every 7 days for 4 weeks. During treatment, the animals were subjected to clinical examination, blood count, serum measurement of symmetric dimethylarginine (SDMA), blood urea nitrogen (BUN), creatinine, alanine aminotransferase, and alkaline phosphatase. In addition, urinalysis and urinary gamma-glutamyl transferase (GGT) measurements were performed. All parameters were determined three times: before beginning the treatment (T0), after 14 days (T1), and after 28 days (T2). During the study period, there were no changes in serum urea or creatinine levels, urine specific gravity, or persistent proteinuria. Furthermore, urinary GGT measurement did not indicate tubular lesions, and consistent elevation of SDMA was found in only one patient above the reference range. The results showed that weekly therapy with VS as a single agent for 28 days does not induce renal injury in most cases.
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- 2022
13. Mitoquinone does not improve sperm cryo‐resistance in bulls
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Câmara, Diogo Ribeiro; https://orcid.org/0000-0002-9873-7419, Ibanescu, Iulian; https://orcid.org/0000-0002-2259-2014, Siuda, Mathias, Bollwein, Heiner, Câmara, Diogo Ribeiro; https://orcid.org/0000-0002-9873-7419, Ibanescu, Iulian; https://orcid.org/0000-0002-2259-2014, Siuda, Mathias, and Bollwein, Heiner
- Abstract
Oxidative stress is associated with impaired post-thaw sperm quality. As mitochondria are the main source of reactive oxygen species (ROS) in sperm, the goal of this study was to evaluate effects of the mitochondria-targeting antioxidant Mitoquinone (MitoQ) during cryopreservation of bull sperm. Semen was collected from 11 Simmental bulls (two ejaculates per bull) and diluted in Triladyl® supplemented with various concentrations of MitoQ (0, 0.2, 2, and 20 nM) to a final concentration of 65 × 106 sperm/ml. After thawing (0 and 3 hr), we assessed the following sperm traits: sperm motility by computer-assisted sperm analysis (CASA), DNA fragmentation index by SCSA® and plasma and acrosome membrane integrity, intracellular calcium concentration, esterase activity, mitochondrial membrane potential and synthesis of ROS using two multicolour flow cytometric assays. After 3 hr of incubation, 20 nM MitoQ increased (p < .05) sperm ROS synthesis compared to Control, whereas none of the other quality parameters were altered (p > .05). Therefore, we concluded that addition of MitoQ to semen extender before cryopreservation of bull sperm was unable to improve post-thaw sperm quality. Furthermore, 20 nM of MitoQ increased frozen-thawed sperm ROS synthesis, without apparent negative effects on the evaluated sperm traits.
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- 2022
14. Mitoquinone does not improve sperm cryo‐resistance in bulls
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Câmara, Diogo Ribeiro, primary, Ibanescu, Iulian, additional, Siuda, Mathias, additional, and Bollwein, Heinrich, additional
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- 2021
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15. Maternal brachycephaly only does not influence umbilical artery resistance in late canine pregnancy
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Sandes, Vitória Nayreli Freyre Gonçalves, primary, Mendonça, Ligia Buzzá Roo de, additional, and Câmara, Diogo Ribeiro, additional
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- 2021
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16. Uso da galactose na vitrificação de sêmen ovino em palhetas
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Matias, Márcio Calixto, primary, Cézar, Allan Rodolf Ribeiro, additional, Marques, Juliana Carla Cavalcanti, additional, Silva, Fernanda Karla Ataide da, additional, Sandes, Vitória Nayreli Freire Gonçalves, additional, and Câmara, Diogo Ribeiro, additional
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- 2021
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17. Mitoquinone does not improve sperm cryo‐resistance in bulls.
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Câmara, Diogo Ribeiro, Ibanescu, Iulian, Siuda, Mathias, and Bollwein, Heinrich
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BULLS , *FROZEN semen , *SPERMATOZOA , *REACTIVE oxygen species , *INTRACELLULAR calcium , *MITOCHONDRIAL membranes , *MEMBRANE potential - Abstract
Oxidative stress is associated with impaired post‐thaw sperm quality. As mitochondria are the main source of reactive oxygen species (ROS) in sperm, the goal of this study was to evaluate effects of the mitochondria‐targeting antioxidant Mitoquinone (MitoQ) during cryopreservation of bull sperm. Semen was collected from 11 Simmental bulls (two ejaculates per bull) and diluted in Triladyl® supplemented with various concentrations of MitoQ (0, 0.2, 2, and 20 nM) to a final concentration of 65 × 106 sperm/ml. After thawing (0 and 3 hr), we assessed the following sperm traits: sperm motility by computer‐assisted sperm analysis (CASA), DNA fragmentation index by SCSA® and plasma and acrosome membrane integrity, intracellular calcium concentration, esterase activity, mitochondrial membrane potential and synthesis of ROS using two multicolour flow cytometric assays. After 3 hr of incubation, 20 nM MitoQ increased (p <.05) sperm ROS synthesis compared to Control, whereas none of the other quality parameters were altered (p >.05). Therefore, we concluded that addition of MitoQ to semen extender before cryopreservation of bull sperm was unable to improve post‐thaw sperm quality. Furthermore, 20 nM of MitoQ increased frozen‐thawed sperm ROS synthesis, without apparent negative effects on the evaluated sperm traits. [ABSTRACT FROM AUTHOR]
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- 2022
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18. Inhibition of Na+, K+ -ATPase with ouabain is detrimental to equine blastocysts
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Nascimento, Agnelo Douglas do, primary, Marques, Juliana Carla Cavalcanti, additional, Cezar, Allan Rodolf Ribeiro, additional, Batista, André Mariano, additional, Kastelic, John Patrick, additional, and Câmara, Diogo Ribeiro, additional
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- 2020
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19. Distúrbios reprodutivos em cabras experimentalmente infectadas por Toxoplasma gondii
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Wanderley, Flaviana Santos, primary, Porto, Wagnner José Nascimento, additional, Câmara, Diogo Ribeiro, additional, Oliveira, Andréa Alice da Fonseca, additional, Kim, Pomy Cássia, additional, Souza Neto, Orestes Luís, additional, Moraes, Érica Paes Barreto Xavier, additional, and Mota, Rinaldo Aparecido, additional
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- 2019
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20. Experimental Vaginal Infection of Goats with Semen Contaminated with the “CPG” Strain ofToxoplasma gondii
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Wanderley, Flaviana Santos, primary, Porto, Wagnner José Nascimento, additional, Câmara, Diogo Ribeiro, additional, da Cruz, Nadine Louise Nicolau, additional, de Oliveira Feitosa, Bruna Catarina, additional, Freire, Roberta Lemos, additional, de Moraes, Érica Paes Barreto Xavier, additional, and Mota, Rinaldo Aparecido, additional
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- 2013
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21. Association between Na +, K + -ATPase and fertility of seminal samples thawed Angus bulls
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Marques, Juliana Carla Cavalcanti, Câmara, Diogo Ribeiro, Silva, Sildivane Valcácia, and Aguiar, Gildeni Maria Nascimento de
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Bovino ,CIENCIAS AGRARIAS::MEDICINA VETERINARIA [CNPQ] ,Espermatozoide ,Bovine ,Sodium-potassium pump ,Bomba de sódio ,Sperm - Abstract
Currently, one of the challenges on bovine reproduction is to efficiently identify high fertility bulls, since traditional andrological evaluation may not precisely differ the fertilizing potential of a sire, leading to reduced pregnancy rates and economic losses. Therefore, the Na+, K+-ATPase has been considered a potential fertility marker, due to its sperm specific properties and reports o correlation with Holstein bull fertility. However, specificities on reproductive management of Brazilian beef herds associated to the lack of information regarding Na+, K+-ATPase in beef bulls, the present study was performed aiming to determine association between Na+, K+- ATPase activity in thawed Angus bull sperm scored as being a high fertility (HF) or normal fertility (NF) after fixed time artificial insemination (FTAI). Samples from three different commercial batches of bulls of HF (n=4) or NF (n=4) were used. Sperm kinematics was evaluated with CASA system, sperm viability was assessed by fluorescent microscopy, and expression of Na+, K+-ATPase on the sperm surface by flow citometry, immediately post-thaw (0h) and after 2h of incubation (37 °C). Na+, K+-ATPase activity was determined measuring the releasing of inorganic phosphate (iP) in the samples treated or not with a specific inhibitor (ouabain, 4×10-4 M), normalized by total protein of each sample. Within the same incubation time, there was no difference (P > 0.05) on sperm viability, kinematic parameters, and the expression of Na+, K+-ATPase between HF and NF bulls. Kinematic parameters of LIN and VCL were not influenced (P>0.05) by incubation time in samples from HF and NF, respectively. There was a tendency (P=0.06) of higher Na+, K+-ATPase enzymatic activity in HF bull samples. In conclusion, differences on kinematic and sperm viability are not detected between HF and NF Angus bulls immediately postthaw. Different responses on velocity parameters post-incubation were detected in HF and NF bulls that might be related to Na+, K+-ATPase activity, without influence of Na+, K+-ATPase expression. Na atualidade, um dos desafios da reprodução bovina é identificar de maneira eficiente touros que apresentam elevada fertilidade, uma vez que a avaliação andrológica tradicional pode não diferenciar de forma precisa o potencial fertilizante de um reprodutor, levando a redução nas taxas de prenhez e prejuízos financeiros. Desta maneira, a Na+, K+-ATPase tem sido um biomarcador potencial da fertilidade, devido as suas atribuições específicas na célula espermática e relatos de correlação com a fertilidade de touros Holandeses. No entanto, devido a peculiaridades de manejo reprodutivo da pecuária brasileira de corte e pela ausência de pesquisas envolvendo a Na+, K+-ATPase em bovinos com esta aptidão, o presente estudo foi desenvolvido a fim de determinar a associação entre a atividade da Na+, K+-ATPase em espermatozoides descongelados de touros Angus classificados como de fertilidade superior (FS) e normal (FN) após inseminação artificial em tempo fixo (IATF). Foram utilizadas três diferentes partidas de amostras comerciais de touros de FS (n=4) e FN (n=4). Realizou-se a avaliação da cinemática através do sistema CASA, da viabilidade espermática através da microscopia de fluorescência e da expressão de Na+, K+-ATPase através da citometria de fluxo, imediatamente após a descongelação (0h) e após 2h de incubação (37 °C), enquanto a atividade da Na+, K+-ATPase foi determinada mensurando-se a liberação de fosfato inorgânico (iP) nas amostras tratadas ou não com inibidor específico (ouabaína, 4×10-4 M), sendo normalizada em função da proteína total de cada amostra. Dentro do mesmo tempo de incubação não houve diferença (P>0,05) na viabilidade, cinemática e na expressão da Na+, K+-ATPase entre touros FS e FN. Os parâmetros cinemáticos de LIN e VCL não foram influenciados pela incubação nas amostras de FS e FN, respectivamente. Houve uma tendência (P=0,06) de maior atividade enzimática da Na+, K+-ATPase em amostras de touros de FS. Em conclusão, diferenças na cinemática e viabilidade espermática não são detectadas entre touros Angus de FS e FN imediatamente após o descongelamento. Diferentes respostas nos parâmetros de velocidade pós-incubação são detectadas em touros de FS e FN que podem estar relacionadas a atividade da Na+, K+-ATPase, sem influência na sua expressão.
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- 2019
22. Localização da NA+, K+-ATPase em espermatozoides ovino in natura, pós-descongelação e capacitados in vitro e determinação dos efeitos de seu bloqueio sobre as características espermáticas
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OLIVEIRA, Aline Saraiva de, GUERRA, Maria Madalena Pessoa, CÂMARA, Diogo Ribeiro, BATISTA, André Mariano, and SILVA, Ellen Cordeiro Bento da
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Ovino ,REPRODUCAO ANIMAL [MEDICINA VETERINARIA] ,Sêmen ,Bomba de sódio - Abstract
Submitted by Mario BC (mario@bc.ufrpe.br) on 2019-05-21T13:00:41Z No. of bitstreams: 1 Aline Saraiva de Oliveira.pdf: 952124 bytes, checksum: 62b016e88a0f2cc16e274bac13ed9f25 (MD5) Made available in DSpace on 2019-05-21T13:00:41Z (GMT). No. of bitstreams: 1 Aline Saraiva de Oliveira.pdf: 952124 bytes, checksum: 62b016e88a0f2cc16e274bac13ed9f25 (MD5) Previous issue date: 2018-03-01 Aiming to localize the Na+, K+-ATPase in ram sperm (raw, post-thaw and capacitated in vitro), and to evaluate the influience of ouabain addition on kinematic sperm parameters, two experiments were performed. Exp.1: semen samples (four rams, seven replicates) were harvested, diluted (Tris-gema, final concentration 200 x 106 sperm/mL) and frozen at -196 C°. Exp. 2: sêmen samples from four rams (five replicates) were diluted in TALPm (50 x106 sperm/mL) and aliquot for two precedures: in vitro capacitation (addition of 2,5% of estrous sheep serum - ESS) or ouabain addition (10-4 M), in order to block the Na+,K+-ATPase. Semen aliquots from both experiments were evaluated using CASA system for kinematic parameters and with aid of flow cytometry it was determined localization of Na+, K+-ATPase (Bodipy FL Ouabaína), evaluated plasmatic (IP) and acrosomal membrande (FITC-PNA) integrity, viability and stability of sperm plasma membrane (YO-PRO e M540). During Exp. 2, it was also evaluated the mitochondrial membrane potential (JC-1). For Exp. 2, all analysis were performed at 0h and 3h of incubation time (36 °C). These are the results: 1) The Na+, K+-ATPase was localized on middle piece of sperm flagellum, despite sample status (raw, post-thaw and capacitated); 2) the freezing-thawing proccess reduced (P
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- 2018
23. Uso de miricetina em meio de criopreservação de sêmen ovino
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ARRUDA, Lúcia Cristina Pereira, GUERRA, Maria Madalena Pessoa, CARNEIRO, Gustavo Ferrer, CÂMARA, Diogo Ribeiro, SILVA, Sildivane Valcácia, and SILVA, Ellen Cordeiro Bento da
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Ovino ,Espermatozoide ,Inseminação artificial ,MEDICINA VETERINARIA [CIENCIAS AGRARIAS] ,Miricetina ,Sêmen - Abstract
Submitted by Mario BC (mario@bc.ufrpe.br) on 2018-06-13T13:25:06Z No. of bitstreams: 1 Lucia Cristina Pereira Arruda.pdf: 996319 bytes, checksum: 616f336889e4a925389d4de5babc78e7 (MD5) Made available in DSpace on 2018-06-13T13:25:06Z (GMT). No. of bitstreams: 1 Lucia Cristina Pereira Arruda.pdf: 996319 bytes, checksum: 616f336889e4a925389d4de5babc78e7 (MD5) Previous issue date: 2018-02-23 Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq Ram semen was diluted (200 x 106 sperm/mL) in Tris-egg yolk (5% glycerol), added of myicetin (0.1, 10, 20, 30, 40, 100, 200, 300, 400 and 1000 nM) and frozen (-196 ° C). After thawing (37°C/30s), kinetics, iMPA, PMM, iROS, LPO, eMP and fertility in vivo (0 and 100 nM myricetin) were evaluated. The analyzes of 0, 1, 10, 100 and 1000 nM of myricetin showed: 10nM myricetin showed lower % RAP (P≤0.05), than 1000nM. Samples of control showed higher (P≤0.05) VAP than 10nM, while samples with 10, 100 and 1000nM of myicetin showed higher BCF (P≤0.05), when compared to control. Miricetin 1000nM presented higher percentage (P 0.05) for kinetics and flow cytometry (P> 0.05), there were also no interactions between treatment and time (P> 0.05). For both there was effect of the incubation time, in some evaluated parameters, the PM, VCL, VSL, VAP, LIN, ALH, percentage of cells with intact plasma and acrosomal membrane, oxidative stress and membrane stability were reduced (P 0,05) para cinética e citometria de fluxo (P>0,05), também não houve interações entre tratamento x tempo (P>0,05). Para ambos houve efeito do tempo de incubação, em alguns parâmetros avaliados a MP, VCL, VSL, VAP, LIN, ALH, porcentual de células com membrana plasmática e acrossomal intactas, estresse oxidativo e estabilidade de membrana foram reduzidos (P
- Published
- 2018
24. Uso de sacarose como suplemento em diluidor para criopreservação de sêmen de garanhões
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MOURA, Thalles Cloves Maciel de, GUERRA, Maria Madalena Pessoa, CARNEIRO, Gustavo Ferrer, CÂMARA, Diogo Ribeiro, and SOUZA, Helder Melo de
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Criopreservação ,MEDICINA VETERINARIA [CIENCIAS AGRARIAS] ,Sêmen ,Equino ,Sacarose - Abstract
Submitted by Mario BC (mario@bc.ufrpe.br) on 2018-06-14T13:12:29Z No. of bitstreams: 1 Thalles Cloves Maciel de Moura.pdf: 598623 bytes, checksum: 1334de126ab769ec1f7cbbe5e338795e (MD5) Made available in DSpace on 2018-06-14T13:12:29Z (GMT). No. of bitstreams: 1 Thalles Cloves Maciel de Moura.pdf: 598623 bytes, checksum: 1334de126ab769ec1f7cbbe5e338795e (MD5) Previous issue date: 2017-08-02 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES The objective of the study was to investigate the effects of different concentrations of sucrose on equine semen quality after thawing. Twenty-four ejaculates were obtained from 6 Mangalarga Marchador and Campolina stallions, in which each ejaculate was divided into 5 groups: control (freezing diluent without sucrose), positive control (Botucrio®®) and three groups consisting of the freezing diluent supplemented with Saccharose at concentrations of 25 mM, 50 mM and 100 mM. The semen samples were obtained with artificial vagina, evaluated and transported (5 ºC) to the laboratory. The semen samples were diluted (200x106 sperm / mL), packed in vales and subjected to freezing. Immediately after thawing (37 ° C, 30s), the semen samples were evaluated for kinetics, plasma and acrosomal membrane integrity, membrane stability and mitochondrial membrane potential. The addition of 50 and 100 mM sucrose to the freezing diluent increased (P
- Published
- 2017
25. Estudo hemodinâmico das artérias oculares e retrobulbares em cães e gatos
- Author
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FERRI, Rinaldo Cavalcante, SÁ, Fabrício Bezerra de, EVÊNCIO NETO, Joaquim, DINIZ, Ana Emília das Neves, CÂMARA, Diogo Ribeiro, and GAETE, Maria Isabel Lynch
- Subjects
Oftalmologia veterinária ,Cão ,Ultrassonografia ,Doppler ,Catarata ,MEDICINA VETERINARIA [CIENCIAS AGRARIAS] ,Gato - Abstract
Submitted by Mario BC (mario@bc.ufrpe.br) on 2016-05-31T16:01:46Z No. of bitstreams: 1 Rinaldo Cavalcante Ferri.pdf: 3229472 bytes, checksum: 19da2e4b0d003487894017f353527306 (MD5) Made available in DSpace on 2016-05-31T16:01:46Z (GMT). No. of bitstreams: 1 Rinaldo Cavalcante Ferri.pdf: 3229472 bytes, checksum: 19da2e4b0d003487894017f353527306 (MD5) Previous issue date: 2016-02-29 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Doppler ultrasound is lacking information in the ophthalmology area applied to dogs and cats. Changes in ocular blood flow may serve as a sentinel to changes in the cardiovascular system and other systems. In this context, the objectives of this study was to: 1) identify the retrobulbar and eye vessels by Doppler ultrasound and determine the resistance index (RI) and pulsatility index (PI) of the external ophthalmic artery (OA) of healthy cats; 2) define the Doppler indices (RI and PI) of the AO and short posterior ciliary (ACPC) in healthy dogs and cataracts, 3) check if there is hemodynamic difference between the stages of cataract and the control group, and 4) correlate them electroretinogram parameters with the total photopic field, intraocular pressure, mean arterial pressure and ocular perfusion pressure. 20 cats, 10 healthy dogs and 31 dogs with cataracts were used. Chemical restraint was performed with animals ketamine S (+) and xylazine. the following values were obtained in cats: PVS (33.78 ± 5.54 cm / s), EDV (23.1 ± 4.32), IR (0.31 ± 0.05) and IP (0.38 ± 0.09). In dogs with cataracts the following results: IR AO (0.54 ± 0.14), AO IP (0.90 ± 0.42), IR ACPC (0.50 ± 0.10), IP ACPC (0.77 ± 0.26). With the studies it can be concluded that: 1) contributed to the sonographic characterization of the main retrobulbar and eye vessels, as well as standardization of the AO Doppler indices in healthy cats; 2) dogs with cataract showed higher Doppler indices that healthy animals, creating the hypothesis that this disease and its potential consequences, such as changes in the retina, may affect the self-regulation mechanisms of ocular blood flow or be a relevant factor to the pathogenesis of cataract and visual changes in the retina. A ultrassonografia Doppler é carente de informações na área de oftalmologia aplicada aos cães e gatos. Alterações do fluxo sanguíneo ocular podem servir como sentinela para alterações no sistema cardiovascular, bem como de outros sistemas. Neste contexto, os objetivos desse estudo foi: 1) identificar os vasos retrobulbares e oculares através da ultrassonografia Doppler e determinar os índices de resistência (IR) e pulsatilidade (IP) da artéria oftálmica externa (AO) de gatos hígidos; 2) definir os índices Doppler (IR e IP) da AO e ciliar posterior curta (ACPC) em cães sadios e com catarata, 3) verificar se existe diferença hemodinâmica entre os estágios da catarata e o grupo controle, e 4) correlacioná-los com parâmetros do eletrorretinograma de campo total fotópico, pressão intraocular, pressão arterial média e pressão de perfusão ocular. Foram utilizados 20 gatos, 10 cães hígidos e 31 cães com catarata. Foi realizada contenção química dos animais com quetamina S(+) e xilazina. Foram obtidos os seguintes valores nos gatos: PVS (33,78 ± 5,54 cm/s), VDF (23,1 ± 4,32), IR (0,31 ± 0,05) e o IP (0,38 ± 0,09). Nos cães com catarata os seguintes resultados: IR da AO (0,54 ± 0,14), IP da AO (0,90 ± 0,42), IR da ACPC (0,50 ± 0,10), IP da ACPC (0,77 ± 0,26). Com os estudos pode-se concluir que: 1) contribuiu para a caracterização ultrassonográfica dos principais vasos retrobulbares e oculares, além da padronização dos índices Doppler da AO nos gatos hígidos; 2) os cães com catarata apresentaram índices Doppler maiores que os animais hígidos, criando a hipótese de que essa enfermidade, bem como suas potenciais consequências, como as alterações na retina, podem afetar os mecanismos de autorregulação do fluxo sanguíneo ocular ou ser um fator relevante para a patogênese da catarata e alterações da retina visual.
- Published
- 2016
26. Evaluation of systems for artificial insemination with observation of estrus or timed artificial insemination in zebu-crossed beef cows
- Author
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BURGOS, Daniel de Castro, CARNEIRO, Gustavo Ferrer, VIEIRA, Rômulo José, CÂMARA, Diogo Ribeiro, and SILVA, Sildivane Valcácia
- Subjects
Gado de corte ,Beef cattle ,REPRODUCAO ANIMAL [MEDICINA VETERINARIA] ,Sincronização de estros ,Estrus synchronization - Abstract
Submitted by (lucia.rodrigues@ufrpe.br) on 2017-02-08T12:21:58Z No. of bitstreams: 1 Daniel de Castro Burgos.pdf: 962079 bytes, checksum: 7910c72572139941c836e667e046d328 (MD5) Made available in DSpace on 2017-02-08T12:21:58Z (GMT). No. of bitstreams: 1 Daniel de Castro Burgos.pdf: 962079 bytes, checksum: 7910c72572139941c836e667e046d328 (MD5) Previous issue date: 2012-02-16 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES The objective of this experiment was to compare the results of the pregnancy obtained by the association of conventional Artificial Insemination (AI) with synchronized estrus together with GnRH in TAI with those of classical TAI in zebu cows. A total of 677 cows were synchronized with a progesterone vaginal device (P4) and 2 mg of estradiol benzoate (EB) on D1, D7 all cows received 530 μg of PGF2α and D9 implants were removed and all animals received 400 IU of eCG and were evaluated in three experiments divided as follows. In first experiment, 190 cows, without temporarily calf weaning and after removal of devices were divided into three groups: control group called EC received 0.4 mg of estradiol cypionate (EC) and TAI were inseminated 48 hours after removal of devices. The second and third groups did not receive ovulation inductor in removal of devices and were named ESTRUS PLUS GnRH 48 HOURS and ESTRUS PLUS GnRH 54 HOURS. These cows were observed for onset of estrus four times (12, 24, 36 and 48 hours) and those that showed estrus during this period were inseminated by the AM / PM method where estrus in the morning AI late afternoon and estrus in the afternoon with AI on the morning of next day; cows who have not appearing in estrus during this period of 48 hours after devices were removed, received 25 μg of GnRH and were inseminated immediately in the group ESTRUS PLUS GnRH 48 HOURS and 6 hours after application of GnRH cows from ESTRUS PLUS GnRH 54 HOURS were inseminated. In the 2nd experiment 242 cows were subjected to similar protocol, but was held temporarily weaned calves after removal of the implants. At the 3rd experiment 245 cows were subjected to two experimental protocols but using P4 devices previously used. Cows were examined by 5 MHz transrectal ultrasonography 45 days after insemination to detect pregnancy in experiments 1 and 2 and 35 days in experiment 3. In experiment 1, cows received the following pregnancy rates: group EC 58.18%, group ESTRUS PLUS GnRH 48 HOURS 56.21% and group ESTRUS PLUS GnRH 54 HOURS 61.97%. In experiment 2 pregnancy rates were: group EC 57.83%, group ESTRUS PLUS GnRH 48 HOURS 57.50% and group ESTRUS PLUS GnRH 54 HOURS 53.16%. In experiment 3 pregnancy rates were: group EC 57.14%, group ESTRUS PLUS GnRH 48 HOURS 56.10% and group ESTRUS PLUS GnRH 54 HOURS 54.43%. No significant difference were seen (p > 0,05) between the groups. In spite of the protocols showing equivalent results, its costs and labor hamper its use, and the use of classic TAI is simpler and more economically viable. O objetivo deste experimento foi comparar os resultados de prenhez da associação de Inseminação Artificial (IA) convencional com estro sincronizado acompanhado de IATF utilizando GnRH com os da IATF clássica em vacas azebuadas. Um total de 677 vacas foram sincronizadas com dispositivo de progesterona (P4) e 2 mg de benzoato de estradiol (BE) no D1, no D7 todas receberam 530 μg de PGF2α e no D9 foram retirados os implantes e todos os animais receberam 400 UI de eCG e foram avaliadas em três experimentos divididos da seguinte forma. No 1º experimento 190 vacas, conduzidas sem apartação temporária dos bezerros após a retirada dos dispositivos, foram divididas em três grupos: O grupo controle chamado de CE recebeu 0,4 mg de cipionato de estradiol (CE) e foram inseminadas na IATF 48 horas após a retirada dos dispositivos. O segundo e o terceiro grupos não receberam indutor de ovulação na retirada dos dispositivos e foram chamados de estro mais GnRH 48 horas e estro mais GnRH 54 horas. Essas vacas foram observadas para apresentação de estro por quatro vezes (12, 24, 36 e 48 horas) e as que apresentaram estro neste período foram inseminadas pelo método AM/PM com estro pela manhã inseminação a tarde e estro pela tarde com inseminação na manhã do dia seguinte; as vacas que não apresentaram estro neste período receberam 48 horas após a retirada dos dispositivos, aplicação de 25 μg de GnRH e foram inseminadas imediatamente no grupo estro mais GnRH 48 horas e após 6 horas da aplicação do GnRH foram inseminadas as vacas do lote estro mais GnRH 54 horas. No 2º experimento 242 vacas foram submetidas a protocolo semelhante, porém realizou-se o desmame temporário dos bezerros após a retirada dos implantes. No 3º experimento 245 vacas foram submetidas ao protocolo do experimento 2 porém utilizando dispositivos de P4 anteriormente utilizados. As vacas foram examinadas por ultrasonografia transretal de 5 MHz em 45 dias após as inseminações para detecção de prenhez nos experimentos 1 e 2 e 35 dias no experimento 3. No experimento 1 as vacas obtiveram as seguintes taxas de prenhez: grupo CE 58,18%; grupo estro mais GnRH 48 horas 56,21% e grupo estro mais GnRH 54 horas 61,97%. No experimento 2 os números de gestação foram: grupo CE 57,83%; grupo estro mais GnRH 48 horas 57,50% e grupo estro mais GnRH 54 horas 53,16%. No experimento 3 os números de gestação foram: grupo CE 57,14%; grupo estro mais GnRH 48 horas 56,10% e grupo estro mais GnRH 54 horas 54,43%. Não houve diferença significativa (p > 0,05) entre os grupos. Apesar dos protocolos se mostrarem equivalentes nos resultados, o aumento do custo e da mão-de-obra dificultam sua utilização, sendo a IATF clássica mais simples e economicamente viável.
- Published
- 2012
27. Neonatal Clinical Assessment of the Puppy and Kitten: How to Identify Newborns at Risk?
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Pereira KHNP, Fuchs KDM, Mendonça JC, Xavier GM, Câmara DR, Cruz RKS, and Lourenço MLG
- Abstract
Neonatal puppies and kittens have physiological and anatomical characteristics that differ from those of adult animals, which impacts the interpretation of physical examination and complementary tests. The veterinarian must be familiar with the clinical, laboratory, and imaging aspects observed in neonates. It is necessary to thoroughly evaluate the litter and the mother to notice the most subtle signs of illness and advise the owner to constantly monitor the newborns, quickly sending them to specialized care. This review describes how to perform clinical assessments of newborns systematically and recognize clinical signs of neonatal changes or affections in puppies and kittens.
- Published
- 2024
- Full Text
- View/download PDF
28. Inhibition of Na + , K + -ATPase with ouabain is detrimental to equine blastocysts.
- Author
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do Nascimento AD, Marques JCC, Cezar ARR, Batista AM, Kastelic JP, and Câmara DR
- Abstract
Although equine blastocysts ≤ 300 µm in diameter can be successfully vitrified, larger equine blastocysts are not good candidates for cryopreservation. As Na
+ , K+ -ATPase is involved in maintaining blastocyst expansion, perhaps inhibition of this enzyme would be a viable method of reducing blastocyst diameter prior to cryopreservation. Objectives were to evaluate effects of ouabain-induced inhibition of Na+ , K+ -ATPase in equine blastocysts. Sixteen mares were ultrasonographically monitored, given deslorelin acetate to induce ovulation, and inseminated. Embryos (D7 and D9) were harvested and Na+ , K+ -ATPase inhibited for 1 or 6 h by exposure to 10-6 M ouabain, either natural ouabain or conjugated to fluorescein (OuabainFL), during incubation at 37° C. Evaluations included morphometric characteristics (bright field microscopy) and viability (Hoescht 33342 + propidium iodide). Blastocysts incubated for 6 h in Holding medium + ouabain (n=3) had, on average, a 45.7% reduction in diameter, with adverse morphologic features and no re-expansion after subsequent incubation in Holding medium for 12 h. In subsequent studies, even a 1-h exposure to Ouabain or OuabainFL, caused similar reductions, namely 38.7 ± 6.7% (n=5) and 33.6 ± 3.3% (n=7) for D7 and D9 blastocysts, respectively. Ouabain binding was confirmed after OuabainFL exposition and all embryos (n=12) lost viability. We concluded that Na+ , K+ -ATPase inhibition with ouabain caused death of equine blastocysts and therefore was not a viable method of reducing blastocyst size prior to cryopreservation., Competing Interests: Conflict of interest: The authors have no conflict of interest to declare., (Copyright © The Author(s).)- Published
- 2020
- Full Text
- View/download PDF
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