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Search Results: 1 - 10 of 51256 matches for " Valdemiro Amaro da; "
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HEMANGIOMA HEPáTICO PRIMáRIO EM GATA PERSA COM DOEN A RENAL POLICíSTICA PRIMARY HEPATIC HEMANGIOMA IN PERSIAN CAT WITH POLYCYSTIC KIDNEY DISEASE
Valdemiro Amaro da Silva Júnior,Frederico Celso Lyra Maia,Fábio Luiz da Cunha Brito
Ciência Animal Brasileira , 2008,
Abstract: Hemangiomas primários do fígado s o neoplasias benignas que podem comprometer a sobrevivência do animal, em virtude da compress o de vasos, ductos e hepatócitos adjacentes, especialmente pela possibilidade de rupturas e morte por hipovolemia. Por serem raros em felinos, objetiva-se relatar o caso de uma gata Persa, com 10 anos de idade, cujos sinais clínicos eram: aumento de volume abdominal, v mitos intermitentes, apatia e anorexia, além de cios irregulares. No exame radiográfico se observou massa tecidual radiopaca no fígado. Na ultra-sonografia hepática, percebiam-se contornos irregulares, parênquima heterogêneo, hiperecogênico, com áreas cavitárias, sugestivo de neoplasia e cistos. No exame macroscópico, visibilizaram-se ascite sanguinolenta, esteatose hepática e massa neoplásica única com 12 cm de comprimento por 8 cm de largura e diversos cistos. Os ovários e rins se apresentavam policísticos e havia hiperplasia endometrial cística. Microscopicamente foram diagnosticadas no fígado forma es císticas limitadas por endotélio e delgada cápsula de tecido conjuntivo, esteatose e hepatite periportal mononuclear-linfocitária com prolifera o de ductos bilíferos. A massa tumoral originava-se a partir do tecido conjuntivo da cápsula hepática e se caracterizava pela presen a de brotos vasculares oriundos de células endoteliais, com dilata o e anastomose de vasos nas áreas mais superficiais. Os achados observados s o compatíveis com o diagnóstico de hemangioma hepático primário do tipo capilar-cavernoso. Nos ovários, no útero, nos rins e fígado, constatou-se doen a policística. PALAVRAS-CHAVES: Fígado, gato, neoplasia vascular. Primaries hepatics hemangiomas are benign tumors that may compel limitations to animal survival owing to the compression of blood vessels, ducts and contiguous hepatocytes, especially due a great possibility of the rupture, hipovolemic shock and death. Because of its rarity in felines, the aim of case report was describes a primary hepatic hemangioma in a female Persian cat aged ten which the clinical symptoms initially observed were: abdominal volume increase, intermittent vomiting, apathy, anorexia and irregular ruts. Radiographic exam revealed the presence of radiopaque tissues in the liver. The hepatic ultrasound exhibited irregular shape, heterogeneous and hyperechogenic parenchyma, presenting hollowed areas which suggests neoplasm and cysts. Macroscopically it was observed ascite, hepatic steatosis and a neoplastic mass measuring about 12 x 8 cm, in addition to a considerable number of cysts. Polycystic kidneys and ovaries an
Estudo clínico e histopatológico da rea??o tecidual às suturas interna e externa dos fios monofilamentares de nylon e poliglecaprone 25 em ratos
Ribeiro, Camila Maria Beder;Silva Júnior, Valdemiro Amaro da;Silva Neto, Joaquim Celestino da;Vasconcelos, Belmiro Cavalcanti do Egito;
Acta Cirurgica Brasileira , 2005, DOI: 10.1590/S0102-86502005000400005
Abstract: purpose: the aim of this experimental study was to evaluate through a clinical and histopatological analysis the tissue reactivity caused by two monofilament sutures nylon and poliglecaprone 25 on the internal and external sutures in rats. methods: for this study, we used forty male rattus novergicus (wistar rats). the experimental procedures were incisions and divulsions performed on the back of the animals' thighs. internal and external sutures were done on the right thigh using nylon 0-5, and on the left thigh using poliglecaprone 25 0-5. the animals were distributed in 4 groups of 10 rats, according postoperatory period on the 7, 14, 21 and 28 days, g1 (7th day), g2 (14th day), g3 (21th day) and g4 (28th day). the clinical assentment aimed to verify the existence of deiscence, exsudate and edema. the histopathologic analisy's was intended to eveluate the inflammatory reaction, foregin body giant cells, fibroblastic proliferation and fibrosis. results: clinically, no changes were found on groups studied. histopathological analysis inflammatory reaction, foregin body giant cells, fibroblastic proliferation and fibrosis were higher on the internal sutures with nylon. on the sutures done with poliglecaprone 25 showed an increase in tissue reactivity passing postoperatory period. conclusions: on the basis of the methodology used in the study, it was concluded that external sutures done with nylon produce less tissue reactivity; on internal sutures, however, this material contributes to the maintenance of the tissue reaction. the external sutures done with poliglecaprone 25 showed a greater tissue reaction; on the external sutures the tissue reaction decreased while the thread was being absorbed.
Estudo clínico e histopatológico da rea o tecidual às suturas interna e externa dos fios monofilamentares de nylon e poliglecaprone 25 em ratos
Ribeiro Camila Maria Beder,Silva Júnior Valdemiro Amaro da,Silva Neto Joaquim Celestino da,Vasconcelos Belmiro Cavalcanti do Egito
Acta Cirurgica Brasileira , 2005,
Abstract: OBJETIVOS: Neste estudo realizamos a análise clínica e histopatológica da rea o tecidual dos fios de nylon e poliglecaprone 25 monofilamentares nas suturas interna e externa em ratos. MéTODOS: Foram utilizados 40 Rattus norvegicus (Wistar) machos. O ato operatório consistiu de incis o e divuls o dos planos muscular e cutaneo realizadas na regi o posterior das coxas dos animais. As suturas internas e externas da coxa direita foram realizadas com o fio de nylon ndegrees5-0, e na coxa esquerda aplicamos o poliglecaprone 25 ndegrees5-0. Os animais foram divididos em 4 grupos (n=10) de acordo com o tempo pós-operatório G1 (7 dias), G2 (14 dias), G3 (21 dias) e G4 (28 dias). Para a avalia o cínica foi considerada a ocorrência de deiscência, de exsudato e edema. Na análise histopatológica objetivou-se avaliar rea o inflamatória, células gigantes de corpo estranho, prolifera o fibroblástica e fibrose. RESULTADOS: Clinicamente, n o foram observadas altera es nos grupos estudados. Histopatologicamente a rea o inflamatória, presen a de células gigantes de corpo estranho, prolifera o fibroblástica e fibrose foram maiores nas suturas internas realizadas com Nylon. Nas suturas realizadas com poliglecaprone 25 essa rea o declinou com o passar do tempo pós-operatório. CONCLUS O: De acordo com a metodologia empregada podemos concluir que as suturas externas realizadas com nylon induziram menor rea o tecidual, enquanto que nas suturas internas este fio contribuiu para perpetuar a rea o tecidual. As suturas externas realizadas com poliglecaprone 25 apresentaram maior rea o tecidual, e suturas internas realizadas com o mesmo fio a rea o tecidual declinou na medida em que o fio estava sendo absorvido.
The effects of topical application of sunflower-seed oil on open wound healing in lambs
Marques, Silvio Romero;Peixoto, Christina A.;Messias, Júlio Brando;Albuquerque, Alessandra Ribeiro de;Silva Junior, Valdemiro Amaro da;
Acta Cirurgica Brasileira , 2004, DOI: 10.1590/S0102-86502004000300005
Abstract: purpose: to demonstrate the effects of the use of sunflower seed oil on the treatment of skin wounds. methods: eighteen male saint inês lambs were divided in 3 groups according to the pos-operative (7, 14 and 21 days). after antisepsis and local anestesia, two 4cm2 wounds on each side of the thoracic region, close to the scapule were surgically produced. the experimental wounds were treated with sunflower seed oil, with high concentration of linoleic acid (la), and the control ones with sterilized vaseline. biopsies of the pos-operative wounds tissue were performed on the 7th, 14th, 21st days and histologically evaluated. results: topic application of sunflower seed oil accelerated healing process at the 7th and 21st days, reducing wound area and increasing wound contraction. granulation tissue increased faster on treated wounds. the epidermis of the treated wounds was completely recovered when compared to control wounds. conclusion: the topic use of sunflower seed oil accelerated the healing process, and it can be used as an alternative therapy on second intention wound healing.
Neonatal Administration of Fluoxetine Decreased Final Sertoli Cell Number in Wistar Rats Administración Neonatal de Fluoxetina Disminuye el Número Final de Células de Sertoli en Ratas Wistar
Valdemiro Amaro da Silva Junior,Marleyne José Afonso Accioly Lins Amorim,Adelmar Afonso de Amorim Junior,Catarina Ferreira Pinto
International Journal of Morphology , 2008,
Abstract: The aim of the present study was to test the hypothesis that the application of fluoxetine - a highly selective serotonin reuptake inhibitor (SSRI) - in rats during the suckling period induces changes in testicular development. Groups of newborn male rats were randomly assigned with different doses of fluoxetine 24 hours after birth. Each litter stayed with its respective mother during 21 days. Body weight (BW) was measured daily from the 1st -21st day to calculate daily doses of fluoxetine. 5 mg (T1), 10 mg (T2) 20 mg (T3) or deionized water, were injected intraperitoneally. On the 21st day, animals were heparinized, anesthetized and blood was collected by cardiac puncture to determine by radioimmunoassay the follicle stimulating hormone (FSH) levels. Testis were removed, weighed, and processed for morphometric analysis. Fluoxetine groups presented decreased body and testicular weight when compared with the control group on the 21st day. Our findings show that the manipulation of the serotoninergic system with fluoxetine during the critical period of testicular development alters the Sertoli cell population and all testicular parameters related to this cell. La propósito del presente estudio fue probar la hipótesis que el uso de fluoxetina - un inhibidor altamente selectivo de la serotonina (SSRI) - induce cambios en el desarrollo testicular de ratas durante el período de amamantamiento. Los grupos de ratas macho recién nacidas fueron asignados aleatoriamente con diversas dosis del fluoxetina, 24 horas después del nacimiento. Cada cría permanecía con su madre respectiva durante 21 días. El peso corporal (BW) fue medido diariamente desde el 21día 1 al 21, para calcular la dosis diarias del fluoxetina. 5 mg (T1), 10 mg (T2) y 20 (T3) o agua desionizada fueron inyectados intraperitonealmente. En el día 21, los animales fueron tratados con heparina, anestesiados y la sangre fue recogida por punción cardiaca para determinar por radioinmunoanálisis los niveles de la hormona folículo-estimulante (FSH). Los testículos fueron retirados, pesados y procesados para el análisis morfométrico. Los grupos trtados con fluoxetina presentaron disminución del tama o y peso testiculares, en comparación con el grupo control día 21. Los resultados demuestran que la manipulación del sistema serotoninérgico con fluoxetina durante el período crítico del desarrollo testicular, altera la población de células de Sertoli y todos los parámetros testiculares relacionados con este tipo celular.
Suplementa o dietética com Selênio uplementa o e Vitamina E nos parametros seminais de caprinos induzidos à insula o escrotal = Effect of diet supplementation with Selenium and Vitamin E on the seminal parameters of goats induced to scrotal insulation
Guadalupe de Carvalho Xavier,Ana Cristina Marinho Maymone,Pierre de Castro Soares,Valdemiro Amaro da Silva Junior
Acta Scientiarum : Animal Sciences , 2008,
Abstract: Avaliou-se o efeito da suplementa o alimentar com Selênio e Vitamina E sobre os parametros seminais de caprinos submetidos à insula o escrotal (IE). Utilizaramse 12 animais distribuídos, aleatoriamente, em grupos-controle (G1) e Selênio e Vitamina E (G2). Dois meses após o início da suplementa o alimentar nos animais do G2, realizou-seIE durante 18 dias. Após este período (IE), a suplementa o foi mantida por mais 42 dias (fase pós-insula o escrotal, PIE). Para análise seminal, foram efetuadas seis colheitas de sêmen (antes, durante e após a IE). N o foi observado efeito da suplementa o com Selênio e Vitamina E nas características quanti-qualitativas do sêmen. Com exce o do volume seminal, foi observada diferen a significativa (p < 0,05) entre os dias de colheita para ambosos grupos, com redu o de motilidade, vigor, concentra o espermática, integridade do acrossoma e de DNA. Decorridos 42 dias da IE, observou-se normalidade de motilidade, vigor espermático, integridade de acrossoma e de DNA em um animal de cada grupo.Conclui-se que a temperatura elevada nos testículos de caprinos submetidos à IE altera os parametros seminais; a suplementa o com Selênio e Vitamina E, nas concentra es de 0,1 e 0,3 mg kg-1 PV-1, respectivamente, n o é suficiente para minimizar os efeitos deletérios da insula o escrotal induzida. This study evaluated the effect of Selenium and Vitamin E supplementation on the semen parameters of goats induced to scrotal insulation (SI). Twelve animals were used, distributed randomly in twogroups (G1 = Control; G2 = Selenium and Vitamin E). Two months after the start of diet supplementation on G2 animals, it was realized SI was induced during 18 days. After this period (SI), supplementation was maintained during 42 days, corresponding to the postinsulationphase (PSI). For semen analysis, six semen collections were performed (before, during and after SI). There was no effect of Selenium and Vitamin E supplementation on the quanti-qualitative characteristics of the semen. With the exception of semen volume, a significant effect (p < 0.05) was observed between collection days for both groups (G1 and G2), with reduction in motility, vigor, sperm concentration, acrosome and DNA integrity. After 42 days of SI, normal values were observed for motility and sperm vigor, acrosomeand DNA integrity in one animal per group. It can be concluded that the high temperature of the testes of goats subjected to SI alters semen parameters; Selenium and Vitamin E supplementation on goats, in a concentration of 0.1 and 0.3 mg kg-1 BW-1, respectively, wa
Histopathological analysis of gangliosides use in peripheral nerve regeneration after axonotmesis in rats
Ribeiro, Camila Maria Beder;Vasconcelos, Belmiro Cavalcanti do Egito;Silva Neto, Joaquim Celestino da;Silva Júnior, Valdemiro Amaro da;Figueiredo, Nancy Gurgel;
Acta Cirurgica Brasileira , 2008, DOI: 10.1590/S0102-86502008000400011
Abstract: purpose: to analyze the action of gangliosides in peripheral nerve regeneration in the sciatic nerve of the rat. methods: the sample was composed of 96 male wistar rats. the animals were anaesthetized and, after identification of the anaesthesic plane, an incision was made in the posterior region of the thigh, followed by skin and muscle divulsion. the right sciatic nerve was isolated and compressed for 2 minutes. continuous suture of the skin was performed. the animals were randomly divided into two groups: the experimental group (eg), which received subcutaneous injection of gangliosides, and the control group (cg), which received saline solution (0.9%) to mimic the effects of drug administration. results: no differences were observed between the experimental and control groups evaluated on the eighth day of observation. at 15 and 30 days the eg showed an decrease in schwann cell activity and an apparent improvement in fibre organization; at 60 days, there was a slight presence of schwann cells in the endoneural space and the fibres were organized, indicating nerve regeneration. at 15 and 30 days, the level of cell reaction in the cg had diminished, but there were many cells with cytoplasm in activity and in mitosis; at 60 days, hyperplastic schwann cells and mitotic activity were again observed, as well as nerve regeneration, but to a lesser extent than in the eg. conclusion: the administration of exogenous gangliosides seems to improve nerve regeneration.
Uveitis associated to the infection by Leishmania chagasi in dog from the Olinda city, Pernambuco, Brazil
Brito, Fábio Luiz da Cunha;Alves, Leucio Camara;Duque Ortiz, Juan Pablo;Maia, Federico Celso Lyra;Silva Junior, Valdemiro Amaro da;Laus, Jose Luiz;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000300042
Abstract: among the parasitic diseases, canine visceral leishmaniasis (cvl) is included in the systemic illnesses of chronic evolution that attack men and dogs, presenting varied clinical manifestations as cachexia, dermatologic lesions, peripheral lymphadenopathies, besides the ocular lesions. this work report the case of a dog clinically suspected of having cvl, presenting skin lesions, cachexia, gryphosis, and ocular signs of uveitis. the parasitological diagnosis was accomplished for canine leishmaniasis through the visualization of amastigote forms of leishmania chagasi in smears of bone marrow fluid aspirate, of non-lesioned, and lesioned skin. alterations in the ocular structures are characterized mainly by mononuclear-plasmocitic infiltrate.
Desempenho, digestibilidade, composi o corporal e morfologia intestinal de pintos de corte recebendo dietas contendo levedura de cana-de-a úcar = Performance, digestibility, body composition and gut morphology of broiler chicks fed diets containing yeast cane sugar
Cláudia da Costa Lopes,Carlos B?a-Viagem Rabello,Valdemiro Amaro da Silva Júnior,M?nica Calixto Ribeiro de Holanda
Acta Scientiarum : Animal Sciences , 2011,
Abstract: Objetivou-se avaliar o desempenho, a digestibilidade das dietas, a reten o corporal de nutrientes e o desenvolvimento da mucosa intestinal de pintos de corte de 1 a 8 dias de idade, alimentados com dietas contendo níveis crescentes de levedura de cana-de-a úcar. Utilizou-se 300 pintos de corte, com um dia de idade, distribuídos em delineamento inteiramente casualizado, composto de cinco tratamentos e seis repeti es de 10 aves. Os tratamentos consistiram de níveis crescentes de 0; 1,25; 2,5; 3,75 e 5,0% de inclus o de levedura. N o houve efeito da levedura sobre o desempenho zootécnico. Houve redu o no coeficiente de metabolizabilidade da energia bruta, na energia metabolizável aparente e a aparente corrigida com os níveis crescentes. O nível de 2,09% promoveu menor reten o corporal de proteína bruta, enquanto a reten o de gordura foi linear crescente. A altura de vilos e rela o vilo:cripta do jejuno aumentou linearmente, a profundidade das criptas do íleo apresentaram menorprofundidade no nível de 2,40% de levedura. A inclus o da levedura de cana-de-a úcar até 5% em dietas de pintos na fase pré-inicial n o afeta o desempenho zootécnico, proporciona melhor desenvolvimento da mucosa intestinal; entretanto, reduz a energia metabolizável das dietas e aumenta a reten o de gordura corporal. The objective was to evaluate the performance, digestibility of diets, body retention of nutrients and the development of intestinalmucosa of post hatching broilers, of one up to eight day old, fed diets containing different levels of sugar cane yeast (Saccharomyces cerevisiae). It was used 300 one day old chicks in a completely randomized design with five treatments and six replicates of 10 birds. The treatments consisted of increasing levels of 0, 1.25, 2.5, 3.75 and 5.0% inclusion of yeast. No effect of yeast on performance. There was a reduction in the coefficients of apparent metabolizable of gross energy, apparent metabolizable energy, apparent metabolizable energy corrected by nitrogen balance with increasing levels. The level of 2.09% results in lower retention of body protein, while the retention of fat was increased linearly. The height of villus and villous height:crypt depth ratio of the jejunum was increased linearly, and the depths of crypts of the ileum had lower depth level of 2.40% yeast. The inclusion of yeast cane sugar levels up to 5% in diets for broiler in the post hatching doesn’t affect the performance and provides better development of the intestinal mucosa in the jejunum, however reduces metabolizable energy of diets and increases greater r
Histopathological findings and detection of parasites in the eyes of dogs infected naturally with Leishmania chagasi
Brito, Fábio Luiz da Cunha;Laus, José Luiz;Tafuri, Wagner Luiz;Figueiredo, Maria Marta;Silva Júnior, Valdemiro Amaro;Maia, Frederico Celso Lyra;Alves, Leucio Camara;
Ciência Rural , 2010, DOI: 10.1590/S0103-84782010005000079
Abstract: the objective of the present study was to investigate the histopathological alterations and detection of parasites that occur in the eyes of dogs naturally infected with leishmania chagasi. the eyes of 25 dogs with a positive parasitological and serological exam for l. chagasi were submitted to routine ophthalmic examination. fragments were obtained from the eyeball and were analyzed by immunohistochemistry and histopathology. among the structures studied, the conjunctiva of the third eyelid was the tissue most frequently stained for l. chagasi. histopathological analysis revealed a predominantly mononuclear inflammatory infiltrate whose intensity ranged from discrete to intense in the various ocular structures. vascular congestion and perivasculitis were also observed. the histopathological alterations that occur in the eyeball of dogs with visceral leishmaniasis might be related to the presence of antibodies.
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