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Androgen synthesis after administration of cadmium chloride to rats has been studied histologically, histochemically and biochemically. Incubation in vitro of testicular tissue removed 10 days after cadmium administration revealed markedly decreased testosterone synthesis. After 100 and 150 days, testosterone synthesis in vitro had increased progressively and significantly, but there was a marked decrease in the testosterone: androstenedione ratio. Surviving Leydig cells, giving typical histochemical reactions for 3β-, 16β- and 17β-hydroxysteroid dehydrogenase, were observed under the tunica albuginea immediately after cadmium poisoning. Fifty days after the cadmium treatment, mesenchymal cells, giving a histochemical 3- and 16-hydroxysteroid dehydrogenase reaction, but no other hydroxysteroid dehydrogenase reaction of normal Leydig cells, grew into the testes from the tunica albuginea. Weight, citric acid and fructose contents of seminal vesicles of cadmium-treated rats fell nearly to castration levels, but showed some degree of recovery thereafter. Studies in vitro on adrenal tissue from cadmium-poisoned rats suggested that the rate of testosterone biosynthesis from pregnenolone was increased.

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				N. Pastor-Soler, C. Pietrement, and S. Breton Role of Acid/Base Transporters in the Male Reproductive Tract and Potential Consequences of Their Malfunction Physiology, December 1, 2005; 20(6): 417 - 428. [Abstract] [Full Text] [PDF]