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Arch Latinoam Nutr. 2000 Dec;50(4):346-52.

[Rice and bean diets increase hepatic and plasmatic activity of gammaglutamyltranspeptidase in young rats].

[Article in Portuguese]

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Departamento de Enfermagem em Saúde Coletiva, Laboratório de Nutrição, Escola de Enfermagem, Universidade de São Paulo, Brasil.


The effect of feeding rice and bean diets in both hepatic and plasmatic activity of gamma-glutamyltranspeptidase-(GGT-EC activity was evaluated in growing-rats (Experiment A) and mature rats (Experiment B). During 28 days, the animals were fed with isocaloric-diets composed by tree levels of rice, bean or rice-and-bean protein. Similarly with the aproteic group, a significant increase on both the hepatic and plasmatic GGT activity were showed with the lowest levels of protein, when compared with 25% casein control group. This rise was more effective in growing-rats fed on legume-based diets (as bean or rice-and-bean diets), making evident a differential effect of age and an exacerbated effect of the protein restriction with the lowest sulfur amino acids disposal. These alterations suggest a metabolic adaptation of GGT to both the inadequate protein and sulfur-amino acid levels, thus supporting the hypothesis that the Glutathione levels may be reduced by these legume-based diets.

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