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SUMMARY
Pregn-5-ene-3α, 16α,20α-triol in amounts from 50 to 220 μg/24 h was found in the urine of normal adult men and women. Excretion within this range was also found in five adult women of whom two had congenital adrenal hyperplasia, one had Cushing's disease, one was hirsute and infertile and one was obese. Except for one patient, who excreted amounts within the normal range, subjects with adrenal carcinoma excreted up to 15 mg of this steroid/24 h.
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SUMMARY
The binding of plasma cortisol to transcortin at 37° c was studied in normal men and in non-pregnant and pregnant women. The mean concentrations of transcortin were 8, 11·5 and 14 × 10−7 moles/l. and the percentages of the binding sites occupied by cortisol were 45, 24 and 40%, respectively. The mean values of the equilibrium constants were 2·9, 1·8 and 4·6 × 107 l./mole, suggesting that there might be a qualitative difference in transcortin from the three groups. The mean concentration of diffusible cortisol was 1·12 μg./100 ml. in men and 0·65 μg./100 ml. in non-pregnant and pregnant women.
The significance of these findings is discussed.
