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ERIC Number: EJ949245
Record Type: Journal
Publication Date: 2008-Jul
Pages: 6
Abstractor: As Provided
Reference Count: 27
ISSN: ISSN-0012-1622
Are Amygdalar Volume Alterations in Children with Tourette Syndrome Due to ADHD Comorbidity?
Ludolph, Andrea G.; Pinkhardt, Elmar H.; van Elst, Ludger Tebartz; Libal, Gerhard; Ludolph, Albert C.; Fegert, Jorg M.; Kassubek, Jan
Developmental Medicine & Child Neurology, v50 n7 p524-529 Jul 2008
Recent studies have shown that changes in the basal ganglia circuitry and limbic loops may play an important role both in Tourette syndrome (TS) and attention-deficit-hyperactivity disorder (ADHD). This study aimed to investigate in vivo possible morphological alterations of the amygdala as a key component of the limbic system. Amygdalar and total brain volumes were measured in three-dimensional magnetic resonance imaging data sets of 17 male patients with TS (mean age 11y 8mo [SD 2y]; range 9-16y) and 17 age-matched comparison children (mean age 12y 6mo (SD 2y 1mo); range 9-17y) by volume-of-interest-based volumetry. Eight members of the TS group also fulfilled the diagnostic criteria for ADHD. A significant decrease in the left-hemispheric amygdalar volumes and in the proportions of amygdalar to total brain volumes was observed in members of the TS group compared with the comparison group. Amygdalar volumes did not correlate with tic severity, but with behavioural impairment and especially with symptoms of ADHD. The amygdalar volume reduction might be the pathoanatomical correlate of an impaired input of the amygdala to the striatum and frontal cortex. Future studies should investigate if the involvement of the amygdala is due to TS or rather caused by the genetically-linked most frequent comorbidity ADHD. (Contains 2 tables and 2 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A