title: Plasma 3 alpha-androstanediol glucuronide in normal children and in congenital adrenal hyperplasia due to 21-hydroxylase deficiency.
abstract: Monitoring therapy for congenital adrenal hyperplasia (CAH) due to 21-hydroxylase is difficult, although plasma determinations of 17 alpha-hydroxyprogesterone (17OHP), delta 4-androstenedione (delta 4A) and testosterone are helpful. We have studied the usefulness of monitoring plasma 3 alpha-androstanediol glucuronide (3 alpha-AG) in group of 24 CAH patients aged from birth to 18 years. For comparison, normal values for age and pubertal stage were determined in a control group of 115 girls and 118 boys. Mean plasma levels were higher during the first year of life, decreased to a nadir between 1 and 4 years, and increased steadily thereafter, there was also a significant increase with pubertal stage. In 24 pairs of blood samples obtained at the time of venopuncture and 2 h after, 3 alpha-AG levels did not change (p > 0.05) demonstrating that 3 alpha-AG levels were not affected by stress. In the patients with CAH, positive correlations between plasma 3 alpha-AG and delta 4A (females, r = 0.73; males, r = 0.98), 17OHP (females, r = 0.58; males, r = 0.84) and testosterone (females, r = 0.83; males, r = 0.97) were observed. Concordance between 3 alpha-AG and delta 4A was observed in 90% of all samples, and in 91% between 3 alpha-AG and testosterone. Our study demonstrates that 3 alpha-AG is a valid marker of control and its determination appears to be a reliable tool to monitor CAH.
authors.affiliation: Department of Pediatrics, Geneva Cantonal Hospital, Geneva, Switzerland.
authors.forename: L A
authors.initials: LA
authors.lastname: Lopes
authors.forename: C
authors.initials: C
authors.lastname: Catzeflis
authors.forename: I
authors.initials: I
authors.lastname: Cicotti
authors.forename: C
authors.initials: C
authors.lastname: Rey
authors.forename: P C
authors.initials: PC
authors.lastname: Sizonenko
mesh_terms: D019326:17-alpha-Hydroxyprogesterone / Q000097:blood; D000293:Adolescent; D000312:Adrenal Hyperplasia, Congenital / Q000097:blood* / Q000201:enzymology; D000375:Aging / Q000097:blood; D015113:Androstane-3,17-diol / Q000031:analogs & derivatives* / Q000097:blood; D000735:Androstenedione / Q000097:blood; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012016:Reference Values; D013739:Testosterone / Q000097:blood
chemical_list: D015113:Androstane-3,17-diol; C028895:androstane-3,17-diol glucuronide; D013739:Testosterone; D000735:Androstenedione; D019326:17-alpha-Hydroxyprogesterone