The acetylcholine-hypersensitive model of diabetic KK-CA(y) mice analyzed with pulse rate, and modified by repeated cold stress and by adrenalectomy

Journal of Pharmacobio-dynamics
I KimuraM Kimura

Abstract

The effects of acetylcholine on pulse rate were examined in the conscious state of diabetic KK-CA(y) male mice. By subcutaneously-administered acetylcholine at 3 and 10 mg/kg the pulse rate was increased in the prediabetic state, whereas it was decreased in the diabetic state. The acetylcholine-induced responses in pulse rate were significantly and multiply correlated with both the blood glucose level and the dose of acetylcholine in KK-CA(y) mice (r = 0.47, p less than 0.01). The diabetic state and adrenalectomy produced an acetylcholine-hypersensitive syndrome, respectively. The hypersensitivity to acetylcholine in a whole body of diabetic mice was attenuated by repeated cold stress producing acetylcholine-subsensitivity, and was enhanced by adrenalectomy. The diabetic KK-CA(y) mice are an acetylcholine-hypersensitive animal model.

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