色氨酸喂食可诱导光不应性仓鼠对短日照敏感。

Tryptophan feeding induces sensitivity to short daylengths in photorefractory hamsters.

作者信息

Wilson J M, Meier A H

出版信息

Neuroendocrinology. 1983;36(1):59-63. doi: 10.1159/000123437.

Abstract

The annual cycle of reproduction in the golden hamster (Mesocricetus auratus) is characterized by gonadal regression in response to decreasing daylengths in fall. However, hamsters become refractory to the inhibitory effects of short daylengths in late winter when gonadal recrudescense occurs. Our results show that addition of tryptophan to the diet of photorefractory hamsters causes them to respond to short daylengths in a manner similar to photosensitive hamsters in winter. Similar tryptophan treatment did not influence testes weights and fat stores of hamsters maintained on long daylengths.

摘要

金黄仓鼠（Mesocricetus auratus）的年度繁殖周期的特点是，在秋季随着白昼长度的缩短，性腺会发生退化。然而，在冬末性腺开始重新发育时，仓鼠对短白昼的抑制作用变得不敏感。我们的研究结果表明，给光不敏感的仓鼠的饮食中添加色氨酸，会使其对短白昼产生反应，其方式类似于冬季光敏感的仓鼠。类似的色氨酸处理对处于长白昼条件下的仓鼠的睾丸重量和脂肪储备没有影响。