Damber J E, Bergh A, Fagrell B, Lindahl O, Rooth P
Acta Physiol Scand. 1986 Mar;126(3):371-6. doi: 10.1111/j.1748-1716.1986.tb07829.x.
Testicular capillary blood flow was studied in rats using laser Doppler flowmetry, in vivo fluorescence microscopy and videophotometric capillaroscopy. All the methods revealed rhythmical oscillations in testicular microcirculation with a periodicity of 4-10 c.p.m. In arterioles, capillaries and small post-capillary vessels, periods of continuous blood flow alternated with periods of no or very low flow. No visible leakage of dextran-150 was observed from the testicular blood vessels. Four, 8 and 16 h after an s.c. injection of 200 IU hCG the blood flow was continuous and there was leakage of dextran-150 from the microvessels to the interstitial tissue. Twenty-four and 32 h after hCG the blood flow pattern was again rhythmical, and at 32 h there was no leakage of dextran-150. This suggests that hCG induces changes in blood flow and transvascular fluid exchange in the testis, perhaps by altering smooth muscle activity at the arteriolar-level.
采用激光多普勒血流仪、体内荧光显微镜和视频光度毛细血管镜研究了大鼠睾丸的毛细血管血流。所有方法均显示睾丸微循环存在节律性振荡，频率为4 - 10次/分钟。在小动脉、毛细血管和毛细血管后小血管中，持续血流期与无血流或极低血流期交替出现。未观察到睾丸血管中有可见的葡聚糖-150渗漏。皮下注射200 IU hCG后4、8和16小时，血流持续，有葡聚糖-150从微血管渗漏到间质组织。hCG注射后24和32小时，血流模式再次呈节律性，且在32小时时无葡聚糖-150渗漏。这表明hCG可能通过改变小动脉水平的平滑肌活动，诱导睾丸血流和跨血管液体交换发生变化。
