Document Detail

Cognitive effects of aromatase inhibitor therapy in peripubertal boys.
MedLine Citation:
PMID:  20421333     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Aromatase inhibitors, blockers of oestrogen biosynthesis, have emerged as a new potential treatment modality for boys with short stature. The cognitive effects of such therapy are unknown. In this study, we explored the effects of aromatase inhibition on cognitive performance in peripubertal boys. DESIGN: Prospective, double-blind, randomised, placebo-controlled clinical study. METHODS: Twenty-eight boys, aged 9.0-14.5 years, with idiopathic short stature were treated with the aromatase inhibitor letrozole (2.5 mg/day) or placebo, for 2 years. During the treatment, the progression of physical signs of puberty and the concentrations of sex hormones were followed up. A selection of cognitive tests, focusing on memory function, was administered to the participants at entry, at 12 months and at 24 months after the start of the treatment. RESULTS: Letrozole effectively inhibited the conversion of androgen to oestrogen, as indicated by high serum testosterone and low serum oestradiol concentrations in letrozole-treated boys who progressed into puberty. In both the groups, there was a gain in performance during the follow-up period in tests of verbal performance, in most of the tests of visuospatial performance and in some tests of verbal memory. No significant differences between the letrozole- and placebo-treated boys in development of cognitive performance were found in any of the tests during the follow-up period. CONCLUSIONS: Our results suggest that blockade of oestrogen biosynthesis with an aromatase inhibitor does not influence cognitive performance in peripubertal males.
M Hero; S Maury; E Luotoniemi; E Service; L Dunkel
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't     Date:  2010-04-26
Journal Detail:
Title:  European journal of endocrinology / European Federation of Endocrine Societies     Volume:  163     ISSN:  1479-683X     ISO Abbreviation:  Eur. J. Endocrinol.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-24     Completed Date:  2010-07-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9423848     Medline TA:  Eur J Endocrinol     Country:  England    
Other Details:
Languages:  eng     Pagination:  149-55     Citation Subset:  IM    
Hospital for Children and Adolescents, University of Helsinki and Helsinki University Central Hospital, PO Box 448, FIN-00029 HUS Helsinki, Finland.
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MeSH Terms
Aromatase Inhibitors / therapeutic use*
Cognition / drug effects
Double-Blind Method
Growth Disorders / drug therapy
Nitriles / therapeutic use*
Triazoles / therapeutic use*
Reg. No./Substance:
0/Aromatase Inhibitors; 0/Nitriles; 0/Triazoles; 112809-51-5/letrozole

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

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