Lack of effect of methylphenidate on serum growth hormone (GH), GH-binding protein, and insulin-like growth factor I.

Abstract:

:The aim of this study was to assess the growth hormone (GH) axis in methylphenidate (MPH)-treated and untreated boys with attention-deficit and hyperactivity disorder (ADHD), by evaluating serum GH, GH-binding protein (GHBP) activity, and insulin-like growth factor I (IGF-I) levels as compared to age-matched normal controls. Blood samples were taken from 42 boys (aged 6-16 years) diagnosed as having ADHD according to DSM-III-R criteria and confirmed by using the Schedule for Affective Disorder and Schizophrenia for school-age children (K[Kiddle]-SADS). A total of 21 patients were treated with MPH (5-20 mg/day; 0.15-0.77 mg/kg/day), on a drug holiday protocol, for 1-36 months, and 21 were drug naive. A total of 46 age-matched normal boys at height and weight within normal range served as controls. No significant differences were detected between the MPH-treated ADHD children, the untreated ADHD children, and the control children on fasting serum GH levels, GHBP activity, or IGF-I levels. Active treatment with MPH, in ADHD children on a drug holiday protocol, does not cause changes in GH axis as manifested by normal values of GH, GHBP, and IGF-I.

journal_name

Clin Neuropharmacol

authors

Toren P,Silbergeld A,Eldar S,Laor N,Wolmer L,Koren S,Weitz R,Inbar D,Reiss A,Eshet R,Weizman R

doi

10.1097/00002826-199706000-00011

subject

Has Abstract

pub_date

1997-06-01 00:00:00

pages

264-9

issue

3

eissn

0362-5664

issn

1537-162X

journal_volume

20

pub_type

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