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  • Title: Reduced kidney branched chain aminotransferase expression in puromycin aminonucleoside-induced nephrotic syndrome.
    Author: Ascencio C, Torres N, Sandoval RL, Cruz C, Pedraza-Chaverri J, Tovar AR.
    Journal: Life Sci; 1997; 61(24):2407-15. PubMed ID: 9399633.
    Abstract:
    Injection of puromycin aminonucleoside to rats induces nephrotic syndrome characterized by hypoalbuminemia, proteinuria and hypercholesterolemia. In these rats, a low protein diet (6% casein diet) increased serum albumin by 26.3%, decreased proteinuria by 39% and reduced total cholesterol by 32%. Branched chain aminotransferase activity in kidney mitochondria of nephrotic rats fed 20 or 6% casein diet decreased by 30 and 24% with respect to their pair-fed groups and it was not modified by the protein content of the diet. Mitochondrial branched chain aminotransferase mRNA expression decreased by 67.3 and 72.5% in nephrotic rats fed 20 and 6% casein diet in comparison to their pair-fed groups. Total serum branched chain amino acids concentration (leucine, isoleucine, valine) in nephrotic rats was 30% higher than their pair-fed groups and it was associated with a decrease in the branched chain aminotransferase activity and mRNA expression suggesting that the catabolism of branched chain amino acid is reduced to conserve body nitrogen.
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