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Effects of aldose reductase inhibitor (ONO-2235) on human erythrocyte sorbitol concentrations in 75 g oral glucose tolerance tests.

Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme (1991-05-01)
N Kamon, H Mabuchi, R Takeda, H Terashima
ABSTRACT

In order to evaluate the effects of the aldose reductase inhibitor, ONO-2235, on the short-term response of human erythrocyte sorbitol to hyperglycemia in vivo, eleven diet-treated Type 2 (non-insulin-dependent) diabetic patients were studied twice in 75 g oral glucose tolerance tests - with and without ONO-2235 (200 mg p.o.) premedication. The erythrocyte sorbitol concentrations increased with the increments of blood glucose and erythrocyte glucose concentrations in the test performed without ONO-2235. The erythrocyte sorbitol response in the test performed with administration of ONO-2235 30 min prior to glucose load was lower than that in the test performed without ONO-2235 (F = 5.782, P less than 0.05). No significant differences were found between the two tests in blood glucose and erythrocyte glucose concentrations (F = 0.092, P = 0.761; F = 0.029, P = 0.860, respectively). It is concluded that human erythrocyte sorbitol concentrations change promptly in response to rapid changes in erythrocyte glucose concentrations and that administered ONO-2235 is effective in inhibiting the human erythrocyte sorbitol pathway in man.

MATERIALS
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