Summary
The cytotoxic effects of ethane dimethanesulphonate upon rat Leydig cells were examined ultrastructurally up to 3 days after treatment and related to changes in serum levels of gonadotrophins and testosterone. Six hours after administration of ethane dimethanesulphonate the usual tubulo-vesicular morphology of Leydig-cell smooth endoplasmic reticulum was converted to small vesicles and the Golgi apparatus showed focal hypertrophy into anastomosing tubules. These changes became more marked by 12 h with many Leydig cells exhibiting karyopyknosis and hyperchromatism. Necrotic Leydig cells were often engulfed by macrophages, the latter containing pyknotic fragments of Leydig cells within their cytoplasm. One day after administration, advanced necrosis of Leydig cells occurred, many of which were phagocytosed by macrophages, and on day 3, destruction of Leydig cells was complete resulting in their elimination from the interstitial tissue, which contained only loose connective tissue and macrophages. Structural alterations to the Leydig cells from 6–24 h was reflected by a significant reduction in serum testosterone levels which further declined to the limits of detection accompanying the abolition of Leydig cells on day 3. These changes were paralleled by a significant elevation of serum LH and FSH levels suggesting diminished feedback regulation of pituitary gonadotrophin secretion. The results indicate that ethane dimethanesulphonate is a rapidly acting Leydig cell toxin which may be a useful experimental tool in further studies of spermatogenic function mediated via Sertoli cell-Leydig cell interaction.
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Kerr, J., Bartlett, J.M.S. & Donachie, K. Acute response of testicular interstitial tissue in rats to the cytotoxic drug ethane dimethanesulphonate. Cell Tissue Res. 243, 405–414 (1986). https://doi.org/10.1007/BF00251057
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DOI: https://doi.org/10.1007/BF00251057