Terbutaline treatment inhibits the hCG-induced increase in venular permeability in the rat testis.

Treatment with hCG results in an increase in venular permeability in the rat testis. This change in vascular permeability can be detected by the carbon-labelling technique, by measurement of the volume of interstitial fluid and by quantification of the leucocyte migration into the interstitial space. Carbon-labelling, interstitial fluid volume and leucocyte migration were all reduced in rats treated with hCG+ terbutaline compared to the values in animals given hCG only. However, terbutaline treatment did not influence the hCG-induced increase in testosterone secretion. These observations suggest that the hCG-induced increase in vascular permeability in the testis can be reduced by a beta-adrenergic agonist.