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  • Title: Effects of carbohydrate restriction on renal injury in the obese Zucker rat.
    Author: Kasiske BL, Cleary MP, O'Donnell MP, Keane WF.
    Journal: Am J Clin Nutr; 1986 Jul; 44(1):56-65. PubMed ID: 3728350.
    Abstract:
    The obese Zucker rat model of nonimmune-mediated, spontaneous focal glomerulosclerosis is ideally suited to study the influence of diet on the initiation and progression of glomerular injury. Young (6 wk) and old (33 wk) lean and obese female Zucker rats were fed a carbohydrate-restricted diet intermittently for 27 wk. Carbohydrate restriction resulted in lower body weight (460 +/- 16 versus 310 +/- 7 g, p less than 0.025), kidney weight (1.26 +/- 0.04 versus 1.07 +/- 0.05 g, p less than 0.025), and glomerular area (6930 +/- 290 versus 5780 +/- 230 micron2, p less than 0.025) in young obese Zucker rats compared to ad libitum-fed rats. Although urine-albumin excretion was substantially reduced by carbohydrate restriction in young obese Zucker rats (41.1 +/- 12.3 versus 6.9 +/- 2.9 mg/24 h, p less than 0.01), glomerular injury was not significantly altered. In old obese rats, carbohydrate restriction did not significantly reduce albuminuria or prevent the progression of glomerular injury. Thus, intermittent carbohydrate restriction failed to alter significantly either the initiation of glomerular injury in young, or the progression of nephron damage in old, obese Zucker rats.
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