Document Detail


Hormonal hypertension in children: 11beta-hydroxylase deficiency and apparent mineralocorticoid excess.
MedLine Citation:
PMID:  11154148     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Blood pressure is determined by the product of cardiac output, intravascular volume, and peripheral resistance. Because hormones are involved in blood pressure regulation and affect these parameters, hypertension is a prominent feature of certain adrenal enzymatic abnormalities. In this report, two steroid-dependent forms of genetic low-renin hypertension are examined: 11beta-hydroxylase deficiency and apparent mineralocorticoid excess. 11beta-Hydroxylation is an enzymatic function necessary for the biosynthesis of cortisol by the zona fasciculata (ZF) of the adrenal cortex. Defects in this step lead to the abnormally increased production by the ZF of the steroid 11-deoxycorticosterone (DOC), a moderately potent mineralocorticoid, which causes sodium retention and volume expansion that result in hypertension. Further, the excess production of adrenal androgens leads to virilization, prenatally in the genetic female, and postnatally in both sexes. The disorder of 11beta-hydroxylase deficiency is due to an autosomal recessive defect of the enzyme protein-encoding gene CYP11B1. Numerous mutations in CYP11B1 causing 11beta-hydroxylase deficiency have been characterized. Apparent mineralocorticoid excess is a potentially fatal genetic disorder causing severe juvenile hypertension, pre- and postnatal growth failure, and low to undetectable levels of potassium, renin, and aldosterone. It is caused by autosomal recessive mutations in the HSD11B2 gene, which result in a deficiency of 11beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2).
Authors:
B I Cerame; M I New
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.; Review    
Journal Detail:
Title:  Journal of pediatric endocrinology & metabolism : JPEM     Volume:  13     ISSN:  0334-018X     ISO Abbreviation:  J. Pediatr. Endocrinol. Metab.     Publication Date:    2000 Nov-Dec
Date Detail:
Created Date:  2001-01-10     Completed Date:  2001-03-08     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  9508900     Medline TA:  J Pediatr Endocrinol Metab     Country:  England    
Other Details:
Languages:  eng     Pagination:  1537-47     Citation Subset:  IM    
Affiliation:
Department of Pediatrics, New York-Presbyterian Hospital and the Weill Medical College of Cornell University, NY 10021, USA.
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MeSH Terms
Descriptor/Qualifier:
11-beta-Hydroxysteroid Dehydrogenase Type 2
Adrenal Hyperplasia, Congenital*
Aldosterone Synthase / genetics
Child, Preschool
Humans
Hydroxysteroid Dehydrogenases / genetics
Hypertension / etiology*
Metabolism, Inborn Errors / diagnosis,  genetics,  physiopathology,  therapy
Mineralocorticoids / metabolism*
Mutation / physiology
Grant Support
ID/Acronym/Agency:
HD00072/HD/NICHD NIH HHS; RR 06020/RR/NCRR NIH HHS
Chemical
Reg. No./Substance:
0/Mineralocorticoids; EC 1.1.-/Hydroxysteroid Dehydrogenases; EC 1.1.1.146/11-beta-Hydroxysteroid Dehydrogenase Type 2; EC 1.1.1.146/HSD11B2 protein, human; EC 1.14.15.4/Aldosterone Synthase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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