Jarrige J F, Boucher D
Laboratoire de Physiologie, Biologie de la Reproduction, Faculté de Médecine, Clermont-Ferrand.
Ann Endocrinol (Paris). 1992;53(2):67-70.
Female rats were exposed to a short (6L:18D) photoperiod from 21 days of age. On day 2 of gestation, animals were pinealectomized or sham-operated. Lighting regimens were not changed during the course of the study. Male offspring of the 2 groups of rats were sacrificed on days 21 after birth. Pinealectomy of the mother induced the following modifications: a decrease in prostate and seminal vesicle weights, a decrease in testicular testosterone and androstenedione content and in plasma dihydrotestosterone levels. We conclude that when rats are maintained on a 6L:18D cycle the maternal pineal gland stimulates the testicular function in 21-day-old offspring.
雌性大鼠从21日龄开始暴露于短光照周期（6小时光照：18小时黑暗）。在妊娠第2天，对动物进行松果体切除或假手术。在研究过程中光照方案不变。两组大鼠的雄性后代在出生后第21天被处死。母亲的松果体切除引起了以下变化：前列腺和精囊重量减轻，睾丸睾酮、雄烯二酮含量以及血浆双氢睾酮水平降低。我们得出结论，当大鼠维持在6L:18D周期时，母体松果体刺激21日龄后代的睾丸功能。
