RESUMO
Bilirubin above a threshold level is toxic to human system and is excreted in urinary and through gastrointestinal tract. The role of bilirubin as antioxidant is debatable. This paper aims at elucidating the role of bilirubin as an antioxidant in neonatal jaundice patients. It is observed that bilirubin up to 6 mg/dl in blood acts as an antioxidant and above 12.5 mg/dl is strongly prooxidant. Phototherapy is the accepted therapeutic management of neonatal jaundice and has been shown to enhance the oxidative stress. Approaches have been taken to formulate a herbal medication which will reduce bilirubin level in the neonates without inducing additional damages. The ethanolic extract of sweet lime peel, administered orally at a dose of 72 microg is found to reduce the oxidative stress in erythrocytes of phenylhydrazine-induced jaundiced rats treated with phototherapy.
Assuntos
Animais , Antioxidantes/metabolismo , Antioxidantes/uso terapêutico , Bilirrubina/sangue , Bilirrubina/química , Bilirrubina/metabolismo , Biliverdina/sangue , Citrus aurantiifolia , Feminino , Glucosefosfato Desidrogenase/metabolismo , Humanos , Recém-Nascido , Icterícia Neonatal/induzido quimicamente , Icterícia Neonatal/tratamento farmacológico , Peroxidação de Lipídeos , Masculino , Oxidantes/sangue , Oxirredutases atuantes sobre Doadores de Grupo CH-CH/sangue , Fosfogluconato Desidrogenase/metabolismo , Fitoterapia , Extratos Vegetais/uso terapêutico , Ratos , Ratos Wistar , Superóxidos/metabolismo , Transcetolase/metabolismoRESUMO
Sixty strains of Escherichia coli, were isolated and identified from 94 samples of infantile diarrhoea and traveller's diarrhoea. Eleven strains were found to be colicinogenic and colicin 'H' was found to be predominant in conjunction with other colicins. Five strains were enteropathogenic of which 055 and one untypable strain were highly enteropathogenic. A positive correlation could be established between haemolytic character, dulcitol fermentation and the virulence of the strain involved.