Damber J E, Lindahl O, Selstam G, Tenland T
Acta Physiol Scand. 1982 Jun;115(2):209-15. doi: 10.1111/j.1748-1716.1982.tb07067.x.
Laser Doppler flowmetry was used to continuously measure testicular blood flow in rats. The method was found applicable on surgically exposed testes. Regular oscillations in blood flow, with a periodicity of 8.6 +/- 0.7 cycles per minute (mean +/- SD), were observed in recordings from 22 to 23 rats. Clamping of the testicular artery reduced the blood flow signal to background values. Effects of catecholamines administered into the tail artery on testicular blood flow together with systemic effects on mean arterial blood pressure and heart rate were measured. It was found that noradrenaline as well as adrenaline caused a significant decrease in blood flow when 10 micrograms was injected. Only noradrenaline decreased the blood flow when 1 microgram was given. The large oscillations detected in the blood flow recordings disappeared quickly when 10 or 1 micrograms of both hormones was administered. It was concluded that catecholamines can exert rapid effects on testicular blood flow.
采用激光多普勒血流仪连续测量大鼠睾丸血流量。该方法适用于手术暴露的睾丸。在22至23只大鼠的记录中观察到血流有规律的振荡，其频率为每分钟8.6±0.7次循环（平均值±标准差）。夹闭睾丸动脉可使血流信号降至背景值。测量了经尾动脉注射儿茶酚胺对睾丸血流量的影响以及对平均动脉血压和心率的全身影响。结果发现，注射10微克去甲肾上腺素和肾上腺素均会导致血流量显著下降。注射1微克时，只有去甲肾上腺素会使血流量下降。当注射10微克和1微克这两种激素时，血流记录中检测到的大幅度振荡迅速消失。得出的结论是，儿茶酚胺可对睾丸血流量产生快速影响。
