Navegando por Palavras-chave "Anus imperfurado"

Agora exibindo 1 - 4 de 4
  • Nenhuma Miniatura disponível
    Item
    Somente Metadadados
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Estudo da densidade das células intersticiais de cajal e das células ganglionares no intestino terminal de ratos portadores de anomalia anorretal
    (Universidade Federal de São Paulo (UNIFESP), 2006) Macedo, Mauricio [UNIFESP]; Martins, José Luiz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Objetivo: Estudar as células ganglionares e as células intersticiais de Cajal (CIC) no intestino terminal de ratos portadores de anomalia anorretal (AAR) induzida pela etilenotiouréia (ETU). Métodos: Os animais foram distribuídos em três grupos: Grupo A - fetos normais, obtidos de ratas grávidas às quais não foi administrada ETU; Grupo S - fetos não portadores de AAR obtidos de ratas grávidas às quais foi administrada ETU e Grupo C - fetos portadores de AAR obtidos de ratas grávidas às quais foi administrada ETU. A ETU foi administrada no décimo primeiro dia de gestação na dose de 125 mg/Kg, por gavagem. As ratas foram submetidas à laparotomia e histerotomia para retirada dos fetos no vigésimo primeiro dia de gestação. O intestino terminal dos fetos foi retirado e analisado por imunohistoquímica para pesquisa das CIC e células ganglionares. Resultados: Foram encontradas diferenças estatisticamente significantes entre os grupos A, S e C quanto à densidade de CIC e de células ganglionares. O grupo A apresentou a maior densidade, seguida pelo grupo S, e a menor densidade, de ambas as células, foi encontrada no Grupo C. Não se observou diferença estatisticamente significante entre os três tipos de anomalia anorretal obtidos, quanto à densidade de ambas as células. Conclusão: Existe uma menor densidade de CIC e de células ganglionares no intestino terminal de ratos portadores de AAR.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Evaluation of an experimental model for anorectal anomalies induced by ethylenethiourea
    (Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2007-04-01) Macedo, Mauricio [UNIFESP]; Martins, José Luiz [UNIFESP]; Meyer, Karine Furtado [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To evaluate an experimental model for anorectal anomalies and their principal associated malformations induced by ethylene thiourea (ETU). METHODS: Rat fetuses were utilized, divided into two groups: experimental group - fetuses from rats that received ETU on the 11th day of gestation at the dose of 125 mg/kg, diluted in distilled water to 1% concentration (12.5 ml/kg); and control group - fetuses from rats that received distilled water alone, at a volume of 12.5 ml/kg. On the 21st day of gestation, the animals were sacrificed by hypoxia in a carbon dioxide chamber, followed by laparotomy to remove the fetuses. These were initially examined externally to determine the sex and whether anorectal anomalies and malformations of the vertebral column and tail were present. Then, with the aid of microscopy, the fetuses underwent exploratory laparotomy to characterize the type of anorectal anomaly and investigate urological malformations. RESULTS: None of the fetuses in the control group presented anorectal anomaly, vertebral column malformation or urological structural alterations. In the experimental group, 71% presented anorectal anomaly, 80% presented vertebral column alterations and 35% presented urological alterations. CONCLUSION: The model described was shown to be easy to implement and presented results that allow its use in studying anorectal anomalies and associated malformations.
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Posterior sagittal anorectoplasty in anorectal anomalies: clinical, manometric and profilometric evaluation
    (Associação Paulista de Medicina - APM, 2007-05-01) Vital Junior, Pedro Felix [UNIFESP]; Martins, Jose Luiz [UNIFESP]; Peterlini, Fábio Luís [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    CONTEXT AND OBJECTIVE: Anorectal malformations comprise a spectrum of anomalies that continue to be difficult to treat, even today. The aim was to evaluate the fecal continence of children who underwent posterior sagittal anorectoplasty due to anorectal malformations, via computerized anorectal manometry and profilometry. DESIGN AND SETTING: Prospective study at Universidade Federal de São Paulo (UNIFESP). METHOD: 82 patients (56.1% boys; 43.9% girls) of mean age 85.5 months were evaluated. They were divided into continent, partially continent and incontinent groups. Age, sex, manometric variables and profilometric parameters were studied. The results were statistically analyzed. RESULTS: Among the 82 patients, 37.8% were continent, 25.6% were partially continent and 36.6% were incontinent. The overall mean resting pressure was 22 mmHg, and the means for the continent, partially continent and incontinent groups were, respectively, 30.7 mmHg, 23 mmHg and 14.7 mmHg. The overall mean pressure response to voluntary contraction was 56 mmHg, and the means for the groups were 65.4 mmHg, 55.8 mmHg and 46.6 mmHg, respectively. The rectosphincteric reflex was absent in 82.9% of the cases. In the profilometry analysis for all patients together, blue (20 to 50 mmHg) and yellow (50 to 80 mmHg) were predominant, and there was a similar distribution for the continent and partially continent patients. However, among the incontinent patients, green (< 20 mmHg) and blue prevailed. CONCLUSIONS: Manometric and computerized profilometric analyses were an excellent method for postoperative evaluations on patients with intermediate and high anorectal anomalies, and for therapeutic planning.