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Search Results: 1 - 10 of 355932 matches for " Sérgio Luis Pinto; "
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Microscopic morphology and testis morphometry of captivity-bred Adult bullfrogs (Lithobates catesbeianus Shaw, 1802)
Carlos, Jaqueline;Matta, Sérgio Luis Pinto da;
Brazilian Archives of Biology and Technology , 2009, DOI: 10.1590/S1516-89132009000600018
Abstract: the aim of this work was to study the testicular morphometry of captivity-bred adult bullfrogs. fifteen young adult male were studied, in the rainy season and a lengthy photoperiod. the gsi was established at 0.15%. the nuclear diameter of germinative and leydig cells, the nucleolus diameter of sertoli cells and the area of cysts and tubules were determined and the mean number of ispc, iispc and spt per cyst and the mean number of cysts per tubule was estimated. the nucleoplasmatic proportion of the nucleus of the leydig cell was 76.22%, indicating less cytoplasmic activity. eight generations of spermatogonia were found. the spermatogenesis efficiency in meiosis and in mitosis was 63 and 49%, respectively. the spermatogenesis of bullfrog fited in the pattern of other captivity anurans, with differences as the morphology of sertoli and leydig cells nuclei.
Reproductive biology of Oligosarcus argenteus (Gunther, 1864) adult males and description of the gonadal maturation stages
Matt, Sérgio Luis Pinto da;Gomes, Marcos de Lucca Moreira;Andrade, Dálcio Ricardo de;
Brazilian Archives of Biology and Technology , 2009, DOI: 10.1590/S1516-89132009000100016
Abstract: oligosarcus argenteus belongs to the acestrorhynchinae subfamily, being restricted to south america, and found in several brazilian hydrographic basins, in lotic and lentic environments, where they are able to reproduce. with the purpose of studying the reproductive biology of the males from this species, many morphological parameters were analyzed during a 24 month period, as well as characterizing the different testicular maturation stages. a maturity scale, with three stages (i - initial maturing, ii - intermediate maturing, iii - final maturing) was proposed for the adult males of oligosarcus argenteus. the reproductive period was established by the bimonthly frequency of spermatogenesis and by the gonadal maturation stages.
Behavior of cholinesterase and liver mitochondrial function in dogs submitted to normothermic ischemia and reperfusion
Fernandes Luis Pinto,Sankarankutty Ajith Kumar,Pacheco Eduardo Garcia,Centurion Sérgio
Acta Cirurgica Brasileira , 2003,
Abstract: PURPOSE: The plasmatic activity of the cholinesterase (CHE) and the liver mitochondrial function, expressed by the ratio of respiratory control (RCR), were studied during normothermic ischemia. METHODS: Sixteen adult mongrels, eight females and eight males were submitted to ischemia by clamping of the hepatic artery, portal vein and infrahepatic inferior vena cava, infra-hepatic, for two h, follwed by reperfusion for 1 h. The CHE and the mitochondrial function were evaluated at 60 and 120 min. of ischemia and at 15 and 60 minutes of reperfusion. RESULTS: The CHE decreased, significantly, during ischemia and in reperfusion. The RCR was decreased at 120 min. of ischemia, returning to the initial values on reperfusion. CONCLUSION: In this study, the CHE was a sensitive indicator of ischemic injury , suggesting irreversibility of ischemia injury. The RCR, by other side, showed a greater sensibility than the CHE in detection sense, during the studied period, the reversibility of the hepatic ischemic injury.
Níveis de energia digestível da dieta sobre o desempenho de piau u (Leporinus macrocephalus) em fase pós-larval = Digestible energy Levels on the piau u (Leporinus macrocephalus) performance
Rodrigo Diana Navarro,Eduardo Arruda Teixeira Lanna,Juarez Lopes Donzele,Sérgio Luis Pinto da Matta
Acta Scientiarum : Animal Sciences , 2007,
Abstract: Objetivou-se determinar as exigências de energia digestível para o piau u. Foram utilizados 250 pós-larvas com peso e comprimento médio inicial de 0,56 ± 0,02 g e 3,60 ± 0,42 cm, respectivamente. O experimento foi realizado em um delineamento inteiramente casualizado, com 5 tratamentos (2600; 2700; 2800; 2900 e 3000 kcal de ED kg-1 de ra o) numa ra o isoproteíca com 28% PB. Os índices viscerossomáticos n o diferiram significativamente. O nível de energia n o influenciou significativamente no peso final, ganho de peso, taxa de eficiência protéica e taxa de sobrevivência. Verificou-se aumento linear no consumo de energia digestível e efeito linear decrescente do nível de energia sobre o teor de proteína da carca a. Observou-se efeito linear positivo para o teor de gordura e aporcentagem de gordura no ganho de peso. Para o ganho de peso que aumentou de forma quadrática até o nível de 2.821 kcal de ED kg-1, a exigência de energia digestível de piau u é de 2.700 kcal de ED kg-1. The objective of this study was to evaluate the effect of energy levels on the piau u (Leporinus macrocephalus) productive performance. Two hundred and fifty post larvae, average initial weight and length of 0.56 ± 0.02 g and 3.60 ± 0.42 cm respectively, were assigned to 25 aquariums with 100 L and stocking rate of 10 fishes/aquarium. The experiment was carried out according to a completely randomized design, with 5 treatments (2600, 2700, 2800, 2900 and 3000 kcal DE kg-1 of a isoprotein ration with 28% CP) and five replications. Viscera-somatic index did not differ among treatments. Final weight, weight gain, protein efficiency rate and survival rate were not affected by the energy level. Linear increase of digestible energy intake and decreasing linear effect of energy levels on carcass protein content, as dietary digestible energy level increased, were observed. The level of 2,700 kcal DE kg-1 showed the higher protein values. A positive linear effect among the dietary DE levels and fat content and the fat percentage in weight gain were also observed, which increased in a quadratic way up to the level of 2,821 kcal DE kg-1. The digestible energy requirement for piau u fingerlings in the post larvae phase is 2,700 kcal DE kg-1.
Posture of academic dentistry about the performance teamwork and the principle ofintegrality
Sérgio Luis Mattos Tezza,Ricardo Mitoso Alho,Lucas Melo Pioner,Kellyson Jackson Caldas Pinto
Saúde & Transforma??o Social , 2011,
Abstract: In 2001, dentistry was inserted into one of the major health programs established by the Unified Health System (SUS), the program of family health strategy. The expectation was that it could reach a supply of care to protect and promote the health of the population in full. Health education appears as a strategy to achieve the provision of health, to meet all user needs in the health system, trying to emphasize the public sector in academic. The multidisciplinary work also emerges as a way to involve the professionals so there are no disputes between them in the execution of their professions. The attention given in full to the user, creating an expectation that it can create bonds of commitment between professionals and users, so that way it can consolidate the implementation of the Unified Health System, and reach a service aimed at the user does not only in its physical and biological processes, but also your psyche.
Association of level of digestible energy in total length, weight of gonads and gonadosomatic index of female Piau u (“Leporinus macrocephalus”, SPIX 1829) Associa o do nível de energia digestível no comprimento total, peso das g nadas e índice gonadossomático de fêmeas de Piau u (“Leporinus macrocephalus”, SPIX 1829) em estágio pós-larval
Rodrigo Diana Navarro,Izabel Regina dos Santos Costa Maldonado,Sérgio Luis Pinto da Matta,Oswaldo Pinto Ribeiro Filho
Revista Brasileira de Saúde e Produ??o Animal , 2010,
Abstract: The objective of this work was to associate the energy digestible level of the diet to ovary development in post larval stage. Twenty-four female fish were used with weight and average initial length of 0.33 ± 0.11 g and 2.94 ± 0.39 cm, respectively. There were four treatments: 2600, 2700, 2800, and 2900 kcal of DE/kg of ration. Digestible energy levels influenced the final weight up to the estimated level of 2757.142kcal/kg. However, there was no significant effect for total length, gonad weight, and gonadossomatic index in females. The level of digestible energy did not provide better initial development of the ovary. This information may guide new experiments, to improve the conditions of cultivation, to value the activity on the economic sense as well as increase the number of fingerlings for aquaculture. Objetivou-se associar o nível de energia digestível da dieta com o desenvolvimento ovariano em estagio pós-larval. Foram usadas 24 fêmeas com peso e comprimento médio inicial de 0,33 ± 0,11g e 2,94 ± 0,39cm, respectivamente. Foram realizados 4 tratamentos: 2600; 2700; 2800 e 2900kcal de ED/Kg de ra o. No presente estudo, o nível de energia digestível influenciou no peso final até o nível estimado de 2757,142kcal/kg. Entretanto, n o apresentou efeito significativo para comprimento total, peso da g nada e índice gonadossomático das fêmeas. O nível de energia digestível n o proporcionou melhor desenvolvimento inicial do ovário. Essas informa es poder o nortear novos experimentos, melhorar as condi es de cultivo, valorizar a atividade no sentido econ mico, assim como aumentar o número de alevinos destinados à aquicultura.
A retrospective study of histopathological findings in 894 cases of megacolon: what is the relationship between megacolon and colonic cancer?
Garcia, Sérgio Britto;Aranha, Alexandre Luis;Garcia, Fabio Rogério Brosci;Basile, Filipe Volpe;Pinto, André Péra Marques;Oliveira, Enio Chaves de;Zucoloto, Sérgio;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2003, DOI: 10.1590/S0036-46652003000200007
Abstract: patients with megaesophagus (me) have increased prevalence of cancer of the esophagus. in contrast, a higher incidence of colorectal cancer is not observed in patients with megacolon (mc). mc is very common in some regions of brazil, where it is mainly associated with chagas disease. we reviewed the pathology records of surgical specimens of all patients submitted for surgical resection of mc in the hospital das clínicas of the faculty of medicine of ribeir?o preto (hc-fmrp), from the university of s?o paulo. we found that 894 patients were operated from 1952 until 2001 for mc resection. mucosal ulcers, hyperplasia and chronic inflammation were frequently found, while polyps were uncommon. no patients with mc presented any type of colonic neoplasm. this observation reinforces the hypothesis that mc has a negative association with cancer of the colon. this seems to contradict the traditional concept of carcinogenesis in the colon, since patients with mc presents important chronic constipation that is thought to cause an increase in risk for colon cancer. mc is also associated with other risk factors for cancer of colon, such as hyperplasia, mucosal ulcers and chronic inflammation. in me these factors lead to a remarkable increase in cancer risk. the study of mucosal cell proliferation in mc may provide new insights and useful information about the role of constipation in colonic carcinogenesis.
Análise técnica e avalia??o de trechos experimentais de misturas solo-lama de cal com vistas a aplica??es em estradas florestais
Machado, Carlos Cardoso;Pereira, Reginaldo Sérgio;Trindade, Tiago Pinto da;Lima, Dario Cardoso de;Carvalho, Carlos Alexandre Braz de;Santos, Sérgio Luis Martins;
Revista árvore , 2007, DOI: 10.1590/S0100-67622007000200009
Abstract: experimental field road test sites are useful technical tools for evaluating the efficiency of road engineering materials. this paper is directed to the evaluation of performance of experimental field road test sites built using mixtures of in-place soils and industrial waste from the cellulose industry named whitewash mud. analysis of data from an extensive laboratory testing program including soils geotechnical characterization and mixtures mechanical strength tests led to the construction of three experimental field road test sites in the municipality of alagoinhas, bahia state, brazil. data from a qualitative evaluation of these sites under field traffic conditions support that best performance can be associated to the road pilot test site built using mixture contents of 70 % of first class gravel and 30 % of whitewash mud.
Testicular morphology of adult wistar rats treated with Rudgea viburnoides (Cham.) Benth. leaf infusion
Monteiro, Juliana Castro;Matta, Sérgio Luis Pinto da;Predes, Fabrícia Souza;Paula, Tarcízio Ant?nio Rego de;
Brazilian Archives of Biology and Technology , 2012, DOI: 10.1590/S1516-89132012000100013
Abstract: the present study was carried out to investigate the effects of rudgea viburnoides infusion on the body biometry and testicular morphometry and stereology of adult wistar rats. two groups received the infusion daily at the concentration of 3 or 6 mg/ml for 40 days. the control group received only water. neither the biometrical parameters nor the tubular diameter and the height of the seminiferous epithelium showed any significant alterations in the treated animals. leydig cells stereology did not show any significant alterations in the treated animals. these results indicated that r. viburnoides did not cause alterations in body biometry and testicular morphometry.
Liver morphology and morphometry and plasma biochemical parameters of Wistar rats that received leaf infusion of Rudgea viburnoides Benth. (Rubiaceae)
Monteiro, Juliana Castro;Matta, Sérgio Luis Pinto da;Predes, Fabrícia de Souza;Oliveira, Tania Toledo de;
Brazilian Archives of Biology and Technology , 2009, DOI: 10.1590/S1516-89132009000200018
Abstract: rudgea viburnoides leaves are widely used in popular brazilian medicine as a diuretic, antirheumatic, hypotensive and blood depurative tea. the present study was carried out to investigate the effects of this infusion on the liver and on the plasma biochemical parameters of wistar rats. two groups received the r. viburnoides leaf infusion at a daily dose of 10 or 20g dry-leaves/l water, during 40 days. the histopathological analysis did not show degenerated areas or infiltration of leucocytes. hepatic morphometry showed accumulation of fat in the hepatocytes of the treated groups. there was no significant change in the plasma levels of urea, creatinin, uric acid, direct bilirubin, cholesterol, total proteins, albumin, gamma glutamyl tranferase (gamma-gt), alanine transaminase (alt), aspartate transaminase (ast), chlorine, phosphate and calcium. a significant reduction in the plasma levels of triacylglycerol (tag) occurred in the group that received the higher dose.
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