Glucose and lactate turnover and gluconeogenesis in chronic metabolic acidosis and alkalosis in normal and diabetic dogs
1988
The turnover rate of glucose, the irreversible disposal rate of lactate, and the rate of gluconeogenesis from lactate were calculated by tracer methods in four normal and four alloxan-diabetic dogs under control conditions as well as in chronic, stable metabolic acidosis and alkalosis. Acidosis was produced by feeding dogs 0.8–1 g∙kg−1∙day−1 NH4Clover 1 week, alkalosis was produced by feeding dogs a chloride-free diet and injections of furosemide. Mean plasma pH in the three states were 7.28 ± 0.013, 7.40 ± 0.024, and 7.51 ± 0.015 in normal dogs, and 7.22 ± 0.025,7.42 ± 0.009, and 7.49 ± 0.002 in the diabetic dogs. Respective mean plasma bicarbonate levels were 14.6 ± 0.88, 22.0 ± 0.80, and 32.4 ± 1.88 mequiv. in normal dogs, and 12.3 ± 1.30, 22.6 ± 0.66, and 35.0 ± 1.14 mequiv. in diabetic animals. In normal dogs shifts in acid–base balance had no effect on the level of plasma glucose or the turnover rate of glucose. In diabetic dogs plasma glucose level was significantly elevated by alkalosis. Plasma la...
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