Damber J E, Janson P O
Acta Endocrinol (Copenh). 1978 Jun;88(2):390-6. doi: 10.1530/acta.0.0880390.
The acute effects of a 20 min constant rate intra-arterial infusion of LH and catecholamines on testicular blood flow and plasma testosterone concentrations were examined in sodium pentobarbitone anaesthetized rats. Ovine LH (2.5 microgram/min) elicited a 6-fold increase in testosterone concentration and a significant decrease of testicular vascular resistance. Noradrenaline and adrenaline (0.4 microgram/min) caused significant depressions in the plasma testosterone levels. The catecholamines induced no absolute changes in testicular blood flow but noradrenaline caused an increase in testicular vascular resistance. It was concluded that the catecholamine induced reductions in testosterone concentrations were not due to a vascular effect on the testis.
在戊巴比妥钠麻醉的大鼠中，研究了20分钟持续动脉内输注促黄体生成素（LH）和儿茶酚胺对睾丸血流和血浆睾酮浓度的急性影响。绵羊LH（2.5微克/分钟）使睾酮浓度增加6倍，并使睾丸血管阻力显著降低。去甲肾上腺素和肾上腺素（0.4微克/分钟）导致血浆睾酮水平显著降低。儿茶酚胺对睾丸血流无绝对影响，但去甲肾上腺素导致睾丸血管阻力增加。得出的结论是，儿茶酚胺引起的睾酮浓度降低并非由于对睾丸的血管效应。
