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  • Title: Adverse effect of proteins on remnant kidney: dissociation from that of other nutrients.
    Author: Laouari D, Kleinknecht C, Gubler MC, Broyer M.
    Journal: Kidney Int Suppl; 1983 Dec; 16():S248-53. PubMed ID: 6588260.
    Abstract:
    Several experiments have shown that deterioration of renal parenchyma after reduction of functional mass is affected by the protein content of the diet. The respective role of proteins and that of other nutrients that vary with proteins were never clearly separated. Three groups of 9 uremic rats received diets differing exclusively in protein (casein) content, which was 8% (group 1), 16% (group 2), and 32% (group 3). Energy and minerals were maintained identical. Food intake was similar in groups 1 and 2 and was lower in group 3. Mortality rate remained closely related to protein intake. Of group 3 rats, 78% died within 10 weeks and 100% within 15 weeks. Of group 2 rats, 56% were dead at week 15, and 100% at week 30. Mortality occurred significantly later in group-1 rats fed the lowest protein diet. Histology of remnant kidneys showed severe glomerular and tubular damage, with no or little calcium deposits despite normal phosphorus diet and frequent hyperphosphatemia. These data suggest that protein intake, independent of any other nutrient, influences survival by accelerating the renal damage in rats with reduced kidney mass.
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