Schindelmeiser J, Kutzner M, Bergmann M, Aumüller G, Heck H, Hoffmann K
Institute of Anatomy, University of Münster, Bundesrepublik Deutschland.
Andrologia. 1988 Nov-Dec;20(6):507-15.
The photoperiodic influence (LD 16:8 long photoperiod, LD 8:16 short photoperiod) on the morphology and the androgen receptor level of the epididymis and the ductus deferens of Phodopus sungorus was investigated. Under short day-conditions, the wet weight of the epididymis is reduced to 5-6%, the diameter of the epididymal duct and of its lumen are reduced, the height of the epithelium and the thickness of the smooth muscle layer are increased. Number and size of epithelial and smooth muscle cells are not changed, no atrophy of the smooth muscle cells is found. The loss in wet weight during short photoperiods is discussed in relation to the loss of stored sperm and luminal fluid. The wet weight of the ductus deferens is decreased to about 30% at short photoperiods, the total length of the organ, its diameter and the luminal diameter are decreased. The height of the epithelium is slightly, and the thickness of the smooth muscle layer is strongly, reduced, the latter due to an enormous atrophy of the smooth muscle cells. The androgen receptor content of the epididymis (per pair of organs) is reduced to about 5%, that of the ductus deferens to about 10% of the values found at long photoperiods, indicating a significant loss of androgen receptors with low circulating androgen levels.
研究了光周期影响（16小时光照：8小时黑暗的长光周期，8小时光照：16小时黑暗的短光周期）对黑线毛足鼠附睾和输精管的形态及雄激素受体水平的影响。在短日照条件下，附睾的湿重减少至5%-6%，附睾管及其管腔的直径减小，上皮高度增加，平滑肌层厚度增加。上皮细胞和平滑肌细胞的数量及大小不变，未发现平滑肌细胞萎缩。短光周期期间湿重的减少与储存精子和管腔液的损失有关。短光周期时输精管的湿重降至约30%，器官的总长度、直径和管腔直径均减小。上皮高度略有降低，平滑肌层厚度显著减小，后者是由于平滑肌细胞大量萎缩所致。附睾（每对器官）的雄激素受体含量降至长光周期时所测值的约5%，输精管的降至约10%，这表明随着循环雄激素水平降低，雄激素受体显著减少。
