Spermatogenesis in two patients with the fragile X syndrome

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Abstract
Light and electron microscopic studies on testicular biopsies were carried out in two men, 40 and 44 year old, with the fra(X) form of mental retardation and macroorchidism. Distinct interstitial edema, an increased amount of lysosomal inclusions in Sertoli cells, and disturbance of spermatid differentiation were found in both probands. Additionally, some extent of tubular atrophy was demonstrated in one patient. The impairment of spermatogenesis is discussed with respect to pressure effects on the germinal epithelium due to the edema.