Scalera G, Benassi C, Porro C A
Istituto di Fisiologia Umana, Università di Modena, Italy.
Physiol Behav. 1990 Jul;48(1):97-101. doi: 10.1016/0031-9384(90)90268-9.
The purpose of this experiment was to explore the effects of pinealectomy or sham pinealectomy on circadian rhythms of taste preferences, food and fluid intake and body weight gain in rats. We compared the body weight gain, the amounts of food eaten and that of deionized water, total fluid, salt, sour, sweet and bitter near-threshold solutions consumed by rats before all surgical manipulations and after pinealectomy or sham pinealectomy. The results showed that the pineal gland does not exert a major influence on circadian organization of taste preferences, drinking, feeding and body weight modifications in the rat. The failure of pinealectomy to modify light/dark rhythms of taste preferences and other related alimentary behaviors may be explained by the fact that pinealectomy does not completely eliminate circulating melatonin.
本实验的目的是探究松果体切除或假松果体切除对大鼠味觉偏好、食物和液体摄入量以及体重增加的昼夜节律的影响。我们比较了在所有手术操作前以及松果体切除或假松果体切除后大鼠的体重增加情况、食物摄入量、去离子水摄入量、总液体摄入量、盐、酸、甜和苦的近阈值溶液的摄入量。结果表明，松果体对大鼠味觉偏好、饮水、进食和体重变化的昼夜节律没有主要影响。松果体切除未能改变味觉偏好和其他相关进食行为的明暗节律，这可能是因为松果体切除并未完全消除循环中的褪黑素。
