PMID: 2493061Jan 1, 1989Paper

Vulnerability of the human Leydig cell to radiation damage is dependent upon age

The Journal of Endocrinology
S ShaletG Read

Abstract

Testicular function was studied in three groups of patients previously treated for malignant disease, and a control group of adult males. The adult patients in groups one and two underwent unilateral orchidectomy for a testicular tumour but only in group two was this followed by post-operative high-dose irradiation (30 Gy) to the remaining testis. Four of the five boys in group three had a unilateral orchidectomy between the ages of 1 and 4 years and all five received a similar dose of irradiation (27.5-30 Gy) to the scrotum as in group two. The five subjects in group three were studied between the ages of 12 and 34 years. In group one the median basal testosterone level (16.0 nmol/l) was normal and the basal gonadotrophin levels mildly but significantly increased, reflecting a resetting of the pituitary-testicular axis following unilateral orchidectomy. In group two the median basal testosterone level (12.5 nmol/l) was significantly lower and the median basal FSH and LH levels were significantly higher than the respective values in group one, indicating that irradiation to the testis in adult life may damage both the germinal epithelium and the Leydig cells. All five males in group three showed grossly increased FSH and LH lev...Continue Reading

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