effects of short term fasting on the evolution of fecal peritonitis in mice efeitos de jejum de curta duração na evolução de peritonite fecal em camundongos

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ID: 133046
2011
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Abstract
PURPOSE: To investigate the effect of 72 hours food suppression on the evolution of fecal peritonitis in mice evaluating the mortality and measuring the number and size of abscesses formed into the peritoneal cavity. METHODS: Mice receiving commercial diet and water ad libitum (control group, N=35) and mice fasted during 72 h (N=35), receiving only water ad libitum, were inoculated by i.p. route, with 4uL/g body weight of a fecal suspension diluted 1:6 or 1:9 in 0.15M NaCl solution (1:6 dilution, 22 controls and 18 fasted; 1:9 dilution, 13 controls and 17 fasted). Animals were followed up until two weeks after fecal inoculation, when the survivors were euthanized for evaluation of the number and size of intra-peritoneal abscesses. Mortality was evaluated by Kaplan Meyer curves. RESULTS: Mortality was significantly higher in fasted groups than in controls. However the number and size of abscesses were significantly less in fasted groups than in controls. CONCLUSION: Seventy two hours food suppression increased the susceptibility to endotoxic shock (high mortality after peritonitis induction) and the resistance to infection with fecal microorganisms (less number and size of intra-peritoneal abscesses).
OBJETIVO: Investigar o efeito de jejum de 72 horas na evolução de peritonite fecal em camundongos, avaliando a mortalidade e o número e tamanho dos abscessos formados na cavidade peritoneal. MÉTODOS: Camundongos recebendo dieta ad libitum (grupo controle, N=35) e camundongos submetidos a jejum durante 72h (N=35) foram inoculados, por via intraperitoenal, com 4uL/g de peso corporal de uma suspensão de fezes diluída a 1:6 ou 1:9 em NaCl 15M (diluição 1:6, 22 controles e 18 jejum; diluição 1:9, 13 controles e 17 jejum). Os animais foram acompanhados até duas semanas após a inoculação das fezes quando eram eutanaziados para avaliação do número e tamanho dos abscessos intraperitoneais. A mortalidade foi avaliada através das curvas de Kaplan Meyer. RESULTADOS: A mortalidade foi significativamente maior nos animais submetidos ao jejum. No entanto o número e tamanho dos abscessos foram significativamente menores neste grupo. CONCLUSÃO: O jejum de 72 horas aumentou a susceptibilidade ao choque endotóxico (maior mortalidade nas primeiras 48 horas) e aumento da resistência aos microorganismos fecais (menor número e tamanho dos abscessos intraperitoneais).
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Authors ;Fernando Antônio Martins Bermudes;Juliano Bertollo Dettoni;Fausto Edmundo Lima Pereira
Journal forensic science international
Year 2011
DOI
10.1590/S0102-86502011000300005
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502011000300005
Keywords
fasting shock

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