BIOSYNTHESIS OF TESTOSTERONE AND OESTROGENS IN VITRO BY THE TESTICULAR TISSUE FROM PATIENTS WITH KLINEFELTER'S SYNDROME

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Abstract
Testis tissue from patients with the chromatin positive form of Klinefelter's syndrome was incubated with 17α-hydroxyprogesterone and testosterone. The ratio of oestrogen to testosterone in the end products of the incubation utilizing 17α-hydroxyprogesterone as substrate was 5 to 10 times the ratio obtained in similar investigations employing testis from normal control subjects. An increased conversion into oestrogen of testosterone utilized as substrate was also observed in the in vitro studies of testis obtained from the patients with Klinefelter's syndrome. These data lend support to the thesis that in the chromatin positive form of Klinefelter's syndrome there is an increased conversion of testosterone into oestrogen in the testis.

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