期刊
PSYCHIATRY RESEARCH-NEUROIMAGING
卷 194, 期 3, 页码 230-234出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.pscychresns.2011.04.007
关键词
Autism spectrum disorders; 5-HT2A receptor; Asperger's Disorder; Positron emission tomography; Serotonin transporter; Serotonin
资金
- Seaver Foundation
- National Institute of Mental Health [U54 MH 066673]
Evidence from biochemical, imaging, and treatment studies suggest abnormalities of the serotonin system in autism spectrum disorders, in particular in frontolimbic areas of the brain. We used the radiotracers [C-11]MDL 100907 and [C-11]DASB to characterize the 5-HT2A receptor and serotonin transporter in Asperger's Disorder. Seventeen individuals with Asperger's Disorder (age = 34.3 +/- 11.1 years) and 17 healthy controls (age = 33.0 +/- 9.6 years) were scanned with [C-11]MDL 100907. Of the 17 patients, eight (age.= 29.7 +/- 7.0 years) were also scanned with [C-11]DASB, as were eight healthy controls (age= 28.7 +/- 7.0 years). Patients with Asperger's Disorder and healthy control subjects were matched for age, gender, and ethnicity, and all had normal intelligence. Metabolite-corrected arterial plasma inputs were collected and data analyzed by two-tissue compartment modeling. The primary outcome measure was regional binding potential BPND. Neither regional [C-11]MDL 100907 BPND nor [C-11]DASB BPND was statistically different between the Aspeiger's and healthy subjects. This study failed to find significant alterations in binding parameters of 5-HT2A receptors and serotonin transporters in adult subjects with Asperger's Disorder. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
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