Failure of serotonin antagonist Pizotifen (cas 15574-96-6) to stimulate feeding or weight gain in free-feeding rats

Add time:08/31/2019    Source:sciencedirect.com

The serotonin antagonist Pizotifen (cas 15574-96-6) (BC-105) is prescribed as an appetite and weight enhancer (Mosegor®—Wander, also commercialized under brand names Sanmigran® or Sandomigran®—Sandoz, Switzerland) for anorectic and convalescent humans. There has been, however, diffuculty in demonstrating any orexigenic effect of pizotifen in laboratory animals. In the present report, the influence of chronic administration of pizotifen (0.1–30.0 mg/kg b.wt. per day, SC) on food intake and body weight gains was studied in rats given a standard diet (SD—energy content 14.5 kJ/g, 9% fibre), and in rats either habituated to a low energy content, carbohydrate-free diet (DD—7.3 kJ/g, 45% fibre), or given the DD after habituation to the SD. Pizotifen failed to increase food intake or weight gain. Nor did it shorten a period of initial depression of intake of the unfamiliar DD. On the contrary, pizotifen seemed to diminish food intake and weight gain in rats fed the low energy content diet. Since it has been reported that other 5-HT antagonists, e.g., cyproheptadine, methysergide, and ritanserin can enhance feeding, it is some interest that pizotifen failed to affect food intake or weight gain in rats. The results suggest that the effects of pizotifen (and, possibly, of serotonin) in rats may differ from those in man. The possibility that feeding in the rat is mediated by 5-HT1 rather than 5-HT2 receptors is discussed.

We also recommend Trading Suppliers and Manufacturers of Pizotifen (cas 15574-96-6). Pls Click Website Link as below: cas 15574-96-6 suppliers

Prev:Short communicationEffects of cyproheptadine and Pizotifen (cas 15574-96-6) on central muscarinic receptors
Next:Effects of methyserrgide, Pizotifen (cas 15574-96-6) and ergotamine in the monkey cranial circulation)