Calvo J C, Sagripanti J L, Peltzer L E, Guzman J A, Charreau E H
Biol Reprod. 1986 Nov;35(4):822-7. doi: 10.1095/biolreprod35.4.822.
In the present work we investigated the presence of testosterone in serum and follicle-stimulating hormone (FSH) receptors in testes of the vizcacha (Lagostomus maximus maximus), a South American rodent. We also investigated the effect of constant light on both parameters. The control group consisted of vizcachas caught in their natural habitat and maintained under continuous darkness; the experimental group consisted of animals maintained under constant light (1076 lx) for 8 days. The results revealed a significant decrease in serum testosterone and FSH receptors when the animals were maintained under constant light, as compared to the control group. Androstenedione was elevated in the serum obtained from the experimental group. It is postulated that the pineal gland may regulate testosterone secretion through FSH receptors and through an enzymatic blockade in the steroidogenic pathway; this supposition, however, remains to be proved.
在本研究中，我们调查了南美啮齿动物草原犬鼠（Lagostomus maximus maximus）血清中睾酮的存在情况以及睾丸中促卵泡激素（FSH）受体的情况。我们还研究了持续光照对这两个参数的影响。对照组由在自然栖息地捕获并保持在持续黑暗条件下的草原犬鼠组成；实验组由在持续光照（1076勒克斯）下饲养8天的动物组成。结果显示，与对照组相比，当动物处于持续光照下时，血清睾酮和FSH受体显著减少。实验组获得的血清中雄烯二酮升高。据推测，松果体可能通过FSH受体以及类固醇生成途径中的酶阻断来调节睾酮分泌；然而，这一推测仍有待证实。
