Abnormalities in adrenal steroidogenesis in Chilean boys with micropenis Anomalías de la esteroidogénesis suprarrenal en niños chilenos con micropene

Sapunar Z J.; Vidal P T.; Bauer V K.

Keywords: enzymology, dehydrogenase, enzyme, chile, hormone, prevalence, blood, puberty, progesterone, steroids, deficiency, mutation, gland, metabolism, steroidogenesis, humans, human, male, genetics, level, steroid, glands, infant, article, child, virilization, congenital, activity, malformation, preschool, monooxygenase, clinical, dehydrogenases, penis, adrenal, derivative, androstenedione, Child,, prasterone, androstane, hydroxysteroid, corticotropin, Adrenocorticotropic, 21, 21-Hydroxylase, hydroxyprogesterone, 3(or, 17)beta, 3-Hydroxysteroid, micropenis, Androstenes

Abstract

Background: Mutations in type II 3? hydroxysteroid Dehydrogenase (3?HSD) are found in male children with severe undervirilized genitalia. Mild undervirilization (isolated micropenis or with distal hypospadia) can be associated with a partial deficit in 3?HSD activity. Aim: To assess the frequency of abnormal adrenal response to ACTH, suggesting a deficit in adrenal enzymatic activity, in children with mild undervirilization. Patients and methods: We studied 26 male children with micropenis, aged one to eight years. Children with evidences of puberal development or in treatment with drugs that affect steroidal metabolism were excluded from the study. Serum levels of androstenedione (A), dehydroepiandrosterone (DHEA), progesterone (P), 17 hydroxyprogesterone (17 P) and the ratios DHEA/A, P/17 P, 17 P/DHEA were measured after an adrenal stimulation with 0.25 mg/m2 intramuscular ACTH. Results: Two children had DHEA y DHEA/A values suggesting a defective 3?HSD activity. Other two children had high levels of 17 P, suggesting a deficiency of cytochrome p450c21. A CYP 21 gene mutation was found in one of the later children. Conclusions: A low proportion of children with micropenis have a deficient 3?HSD activity.

Más información

Título según SCOPUS: Abnormalities in adrenal steroidogenesis in Chilean boys with micropenis [Anomalías de la esteroidogénesis suprarrenal en niños chilenos con micropene]
Título de la Revista: REVISTA MEDICA DE CHILE
Volumen: 131
Número: 1
Editorial: SOC MEDICA SANTIAGO
Fecha de publicación: 2003
Página de inicio: 46
Página final: 54
Idioma: Spanish
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-0038621744&partnerID=q2rCbXpz
Notas: SCOPUS