Effect of Carbimazol-induced Hypothyroidism on Male Rat Reproductive System

The present study is undertaken to evaluate the effects of hypothyroidism induced by carbimazol in male rat reproductive system. Rats were treated with carbimazol (80 and 160 mg/kg body weight) daily for two, four, six, and eight weeks, while control rats were given distilled water orally. The results of these experiments are: 1-Treatment with carbimazol produced increase in body weight of treated animals. This increase was not statistically significant even at high concentrations. 2-Decrease in testicular weight was observed during all administration points. This decrease was aggravated proportional to duration and dose (p≤0.001). 3-Results of most intervals showed significant decrease in epididymal-head weight, while no significant decrease was observed in epididymal-tail weight. 4-Carbimazol increased seminal vesicle weight, particularly after six (P≤0.05) and eight weeks for both doses. 5-Prostates were responsive to reduce thyroid hormones by increasing its weight in a dose- dependent manner.