Journal article
The COMT Val108/158Met polymorphism and medial temporal lobe volumetry in patients with schizophrenia and healthy adults
NeuroImage (Orlando, Fla.), Vol.53(3), pp.992-1000
11/15/2010
DOI: 10.1016/j.neuroimage.2009.12.046
PMCID: PMC2888809
PMID: 20026221
Abstract
Abnormalities of the medial temporal lobe have been consistently demonstrated in schizophrenia. A common functional polymorphism, Val108/158Met, in the putative schizophrenia susceptibility gene, catechol-O-methyltransferase (COMT), has been shown to influence medial temporal lobe function. However, the effects of this polymorphism on volumes of medial temporal lobe structures, particularly in patients with schizophrenia, are less clear. Here we measured the effects of COMT Val108/158Met genotype on the volume of two regions within the medial temporal lobe, the amygdala and hippocampus, in patients with schizophrenia and healthy control subjects.
We obtained MRI and genotype data for 98 schizophrenic patients and 114 matched controls. An automated atlas-based segmentation algorithm was used to generate volumetric measures of the amygdala and hippocampus. Regression analyses included COMT met allele load as an additive effect, and also controlled for age, intracranial volume, gender and acquisition site.
Across patients and controls, each copy of the COMT met allele was associated on average with a 2.6% increase in right amygdala volume, a 3.8% increase in left amygdala volume and a 2.2% increase in right hippocampus volume. There were no effects of COMT genotype on volumes of the whole brain and prefrontal regions.
Thus, the COMT Val108/158Met polymorphism was shown to influence medial temporal lobe volumes in a linear-additive manner, mirroring its effect on dopamine catabolism. Taken together with previous work, our data support a model in which lower COMT activity, and a resulting elevation in extracellular dopamine levels, stimulates growth of medial temporal lobe structures.
Details
- Title: Subtitle
- The COMT Val108/158Met polymorphism and medial temporal lobe volumetry in patients with schizophrenia and healthy adults
- Creators
- Stefan Ehrlich - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USAEric M Morrow - Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USAJoshua L Roffman - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USAStuart R Wallace - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USAMelissa Naylor - Harvard School of Public Health, Department of Biostatistics, Boston, MA, USAH. Jeremy Bockholt - The Mind Research Network, Albuquerque, NM, USAAntonia Lundquist - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USAAnastasia Yendiki - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USABeng-Choon Ho - Department of Psychiatry, University of Iowa, Iowa City, IA, USATonya White - Department of Psychiatry and the Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USADara S Manoach - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USAVincent P Clark - The Mind Research Network, Albuquerque, NM, USAVince D Calhoun - The Mind Research Network, Albuquerque, NM, USARandy L Gollub - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USADaphne J Holt - MGH/MIT/HMS Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA
- Resource Type
- Journal article
- Publication Details
- NeuroImage (Orlando, Fla.), Vol.53(3), pp.992-1000
- DOI
- 10.1016/j.neuroimage.2009.12.046
- PMID
- 20026221
- PMCID
- PMC2888809
- NLM abbreviation
- Neuroimage
- ISSN
- 1053-8119
- eISSN
- 1095-9572
- Publisher
- Elsevier Inc
- Grant note
- name: NIH/NCRR, award: P41RR14075; name: Department of Energy, Mental Illness and Neuroscience Discovery (MIND) Research Network, Morphometry Biomedical Informatics Research Network (mBIRN), award: 1U24, RR021382A; name: Function BIRN, award: U24RR021992; name: NIMH K23, award: MH076054; name: NIMH K23, award: MH080954; name: National Alliance for Research in Schizophrenia and Depression, award: M01-RR-01066; DOI: 10.13039/100000861, name: Burroughs Wellcome Fund; DOI: 10.13039/100012138, name: Nellie Ball Research Trust; DOI: 10.13039/501100001659, name: Deutsche Forschungsgemeinschaft
- Language
- English
- Date published
- 11/15/2010
- Academic Unit
- Psychiatry
- Record Identifier
- 9984004079102771
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