Abstract

Hippurate action on glucose utilization was evaluated in rat kidney cortex slices. Studies have shown the following. (1) Hippurate inhibits markedly basal as well as insulin-stimulated glucose utilization and basal gluconeogenesis. (2) Ca deficiency and specific Ca channel blockers diltiazem and isradipine abolish the hippurate inhibition of glucose utilization. (3) K+ channel blockers, i.e. the increased K+ concentration in incubation medium, procaine and sulfonylurea drugs also abolish the hippurate inhibition of glucose utilization. It is concluded that hippurate and benzoate operate through the ATP-dependent K+ channel.

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