Neural Mechanisms of a Genome-Wide Supported Psychosis Variant
摘要:
Schizophrenia is a devastating, highly heritable brain disorder of unknown etiology. Recently, the first common genetic variant associated on a genome-wide level with schizophrenia and possibly bipolar disorder was discovered in ZNF804A (rs1344706). We show, by using an imaging genetics approach, that healthy carriers of rs1344706 risk genotypes exhibit no changes in regional activity but pronounced gene dosage-dependent alterations in functional coupling (correlated activity) of dorsolateral prefrontal cortex (DLPFC) across hemispheres and with hippocampus, mirroring findings in patients, and abnormal coupling of amygdala. Our findings establish disturbed connectivity as a neurogenetic risk mechanism for psychosis supported by genome-wide association, show that rs1344706 or variation in linkage disequilibrium is functional in human brain, and validate the intermediate phenotype strategy in psychiatry.
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关键词:
Humans Hippocampus Prefrontal Cortex Magnetic Resonance Imaging Brain Mapping Mental Processes Bipolar Disorder Schizophrenia Affective Symptoms Genotype
DOI:
10.1126/science.1167768
被引量:
年份:
2009














































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