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[Fluorescence diagnosis of a lengthened Y-chromosome in father and son].

Two cases with long Y chromosome in a father and his son have been described. The chromosomes were analysed routinely using the peripheral blood leukocyte culture according to Moorhead et al. (1960) and of the slightly modified fluorescence method of Caspersson (1970, 1971) after QM-staing. In both patients the size of the Y resembled that of the pair 17--18 of autosomes. A brightly fluorescent heterochromatic region of the Y showed normal patterns and size. In one of the patients the analysis of solar and palmar dermatoglyphics, the testicular biopsy, EEG, glucose loading test, as well as laboratory tests evaluating the hormonal function of adrenal cortex and of thyroid gland were performed. The second patient did not agree to any tests.

17-Hydroxycorticosteroids↗

[Relationship between functional activity of the adrenal glands and gonads in monkeys during puberty].

Testicular and adrenal cortex endocrine functions were simultaneously tested in pubertal baboons (papio hamadryas) during one year. Concentrations of androgens (testosterone, 5 alpha-dihydrotestosterone, dehydroepiandrosterone), corticosteroids (cortisol, progesterone, 17-hydroxyprogesterone, 17-hydroxypregnenolone) and aldosterone were determined in blood of the experimental monkeys by radioimmunoassay. It was shown that with increasing androgen (testosterone and dihydrotestosterone) levels in blood of the pubertal monkeys there was a significant decrease of corticosteroid concentration which was most pronounced in the monkeys with maximum increase of testosterone level. Described hormonal changes did not influence aldosterone concentration.

17-alpha-Hydroxyprogesterone↗