Abstract
It is a well established fact that there is a close relationship between spermatogenesis and gonadotropins. Selective damage of the germinal epithelium can easily be induced experimentally or found clinically and it has been shown by many authors that spermatogenetic failure is associated with castration changes in the hypophysis and increase in the gonadotropin level. The cause of spermatogenetic damage is unimportant. Hypophyseal changes have been shown to occur after anti-spermatogenetic compounds (1, 2), cadmium(3), radiation (4), testicular ischemia (5), cryptorchidism (6, 7, 8) and in various testicular disorders in man (9–14). When there is a failure of spermatogenesis, the gonadotropin rise primarily affects FSH (7, 14, 15), although LH also seems to be involved (16).
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Johnsen, S.G. (1970). Investigations Into the Feed-Back Mechanism Between Spermatogenesis and Gonadotropin Level in Man. In: Rosemberg, E., Paulsen, C.A. (eds) The Human Testis. Advances in Experimental Medicine and Biology, vol 10. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9008-8_18
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