Elevation of plasma cholecystokinin concentration following a meal is increased by gonadectomy in male cats

Journal of Animal Physiology and Animal Nutrition
R C BackusQuinton R Rogers

Abstract

An overweight or obese body condition commonly develops after gonadectomy (GX) in domestic cats. The cause appears to be a rapid, quantal (approximately 12%), increase in food intake that is sustained and probably mediated by withdrawal of gonadal hormone. Recently, an interaction of gonadal hormone and cholecystokinin (CCK) effectiveness has been suggested. A reduction in the satiating potency of intestinal CCK was presently hypothesized to contribute to the disturbance of food intake control caused by GX in domestic cats. Pre- and post-prandial intestinal CCK secretion as indicated by plasma CCK concentrations were determined in 16 adult male cats (5.1 +/- 0.1 kg) 8 weeks before and 57 weeks after eight of the cats were gonadectomized. During ad libitum intake of a commercial dry, expanded diet, body weight increased from 22% to 28% in gonadectomized cats and was unchanged in intact cats. Baseline CCK concentrations were not different between gonadectomized and intact cats. Amounts of diet ingested during CCK determinations were 15-19% of daily metabolizable energy requirement and were not different between gonadectomized and intact cats. The post-prandial area under the curve (AUC; 0-400 min) CCK concentration increased line...Continue Reading

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Citations

Mar 31, 2015·European Journal of Pharmacology·Melania Osto, Thomas A Lutz
Jul 20, 2016·Journal of Feline Medicine and Surgery·Jennifer A Larsen

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