Abstract
The effect of an LHRH-agonist (A) on testicular blood flow and plasma testosterone levels was studied in adult hypophysectomized rats. Subcutaneous injection of 1 microgram LHRH-agonist 2 or 4 h prior to experiment induced an increase in testicular blood flow. ( 21.1 +/- 2.8 ml/100 g X min; LHRH-A + 2 h: 28.9 +/- 3.3 ml/100 g X min; LHRH-A + 4 h: 32.4 +/- 4.1 ml/100 g X min P less than 0.05; all mean +/- SEM). There was also a significant increase in plasma testosterone levels at 2 h (P less than 0.01) and 4 h (P less than 0.01) after treatment with the LHRH-agonist, with a peak at 2 h.
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