Evaluation of 21-deoxycortisol as a marker for the detection of heterozygous carriers of 21-hydroxylase deficiency.
The study was aimed at evaluation of usefulness of determination of blood serum 21-deoxycortisol concentration for the detection of heterozygous carriers of incomplete block of 21-hydroxylase synthesis leading to adrenal hyperplasia. An earlier observation of the authors that the determination of 21-deoxycortisol is a more sensitive marker than 17-hydroxyprogesterone for diagnosing this genetic defect provided the motivation for undertaking this study. The levels of 21-deoxycortisol and 17-hydroxyprogesterone were determined in blood serum by using radioimmunoassay methods in 18 mothers and 21 fathers of children born with 21-hydroxylase deficiency, before and after intravenous administration of ACTH. As a control group served 15 women and 11 men of the corresponding age. Unlike 17-hydroxyprogesterone, 21-deoxycortisol levels were significantly higher both in women (20.5 +/- 12.6 ng/dl) and in men (21.2 +/- 14.4 ng/l) suspected of being heterozygous carriers, both before and after stimulation with ACTH, as compared to those in the control group (6.9 +/- 3.6 in women and 7.9 +/- 2.8 in men). Only in three women and in two men suspected of carrying the defective gene the values of 21-deoxycortisol were in normal range. The results obtained demonstrated evidently that 21-deoxycortisol can be regarded as a more sensitive marker for the detection of heterozygous carriers of 21-hydroxylase deficiency than 17-hydroxyprogesterone and the determination of 21-deoxycortisol is more useful for diagnosing this genetic defect.
Milewicz
A
A
Department of Endocrinology, Medical Academy, Wrocław, Poland.
Afelska
A
A
Wasikowa
R
R
Romer
T
T
D019326:17-alpha-Hydroxyprogesterone; D000312:Adrenal Hyperplasia, Congenital / Q000097:blood*; D000324:Adrenocorticotropic Hormone; D000328:Adult; D015415:Biomarkers / Q000097:blood; D003350:Cortodoxone / Q000097:blood*; D005260:Female; D006580:Genetic Carrier Screening / Q000379:methods*; D006801:Humans; D006908:Hydroxyprogesterones / Q000097:blood; D007536:Isomerism; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity
D015415:Biomarkers; D006908:Hydroxyprogesterones; C003556:21-deoxycortisol; D019326:17-alpha-Hydroxyprogesterone; D000324:Adrenocorticotropic Hormone; D003350:Cortodoxone