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  • Title: Beneficial effects of a non-protein diet on renal function of rats exposed to ischemic and nephrotoxic insults.
    Author: Ishigami M, Eguchi M, Ohnishi ST.
    Journal: Nihon Jinzo Gakkai Shi; 1993 Aug; 35(8):925-31. PubMed ID: 8255002.
    Abstract:
    We investigated the effects of a non-protein diet on renal recovery in rats following 45-minute renal ischemia and mercuric chloride (3 mg/kg BW:S.C.) poisoning. The rats were fed a non-protein diet for one week before the renal insults. Renal functions were measured 24 hours after renal ischemia or 6 hours after mercuric chloride administration. In the ischemia investigation, the glomerular filtration rate (GFR), the renal plasma flow rate (RPFR) and the percent fractional sodium excretion (%FENa) of rats fed a regular diet (19.6% protein) were 25 +/- 7 microliters/min/g KW, 0.19 +/- 0.1 ml/min/g KW and 14.8 +/- 2.0, respectively. These values in the rats fed a non-protein diet showed better recovery, returning to a GFR of 114 +/- 32 microliters/min/g KW, an RPFR of 0.37 +/- 0.1 ml/min/g KW, and a %FENa of 2.43 +/- 0.6, respectively (p < 0.05). Furthermore, the seven-day survival rate was improved from 17% in the regular diet group to 100% in the non-protein diet group. In the mercuric chloride investigation, the renal functions in rats on a regular diet were shown by a GFR of 461 +/- 51 microliters/min/g KW, an RPFR of 1.91 +/- 0.2 ml/min/g KW, and a %FENa of 2.22 +/- 0.5. One-week feeding with a non-protein diet ameliorated the decrease in renal function, resulting in a GFR of 604 +/- 84 microliters/min/g KW, an RPFR of 2.15 +/- 0.5 ml/min/g KW, and a %FENa of 2.20 +/- 0.6. Consequently, there was a distinct beneficial effect on the survival of these rats.(ABSTRACT TRUNCATED AT 250 WORDS)
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