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Pharmacol Biochem Behav. 1992 Nov;43(3):919-23.

Vagally mediated feeding responses to phloridzin infusion in the rabbit.

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  • 1Cottage Hospital Eating Disorders Program, Santa Barbara, CA 93106.


Rabbits were infused with the plant glycoside, phloridzin, which blocks absorption of glucose across a number of bodily tissues. Feeding was dramatically increased in the first 0.5 h following phloridzin infusion into either the duodenum or the hepatic-portal vein of intact rabbits. Food intake covaried inversely with glycemic levels after phloridzin infusion into the hepatic-portal vein, but rabbits did not show a systematic relationship between blood glucose levels and food intake following duodenal infusion of phloridzin. When administered into the general circulation via the jugular vein, phloridzin did not elicit feeding. Finally, vagotomized rabbits did not show the hyperphagic response to phloridzin that was observed in intact rabbits. It was concluded that the feeding response to phloridzin is vagally mediated and appears to be induced by glucose transport inhibition at some peripheral site.

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