Cannabinoid receptor 1 (CNR1) gene: impact on antidepressant treatment response and emotion processing in Major Depression

Domschke, Katharina, Dannlowski, Udo, Ohrmann, Patricia, Lawford, Bruce, Bauer, Jochen, Kugel, Harald, Heindel, Walter, Young, Ross, Morris, Phillip, Arolt, Volker, Deckert, Jurgen, Suslow, Thomas, and Baune, Bernhard T. (2008) Cannabinoid receptor 1 (CNR1) gene: impact on antidepressant treatment response and emotion processing in Major Depression. European Neuropsychopharmacology, 18 (10). pp. 751-759.

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The endocannabinoid system has been implicated in the pathogenesis of depression and anxiety, the mediation of antidepressant drug effects in animal models and the neurobiology of emotion processing in healthy volunteers. Therefore, the impact of cannabinoid receptor 1 gene (CNR1) variants rs1049353 and rs12720071 on antidepressant treatment response was evaluated in 256 Caucasian patients with Major Depression. A subsample of 33 depressed patients was additionally scanned by fMRI under visual presentation of emotional faces. The CNR1 rs1049353 G allele conferred an increased risk of antidepressant treatment resistance,particularly in female patients with high comorbid anxiety. CNR1 rs1049353 G allele carriers also demonstrated weaker bilateral amygdala, putamen and pallidum activity as well as left lateralized caudate and thalamus activity in response to masked happy faces. This analysis provides preliminary support for a role of CNR1 gene variation in depression and anxiety, potentially mediated by subcortical hypo-responsiveness to social reward stimuli.

Item ID: 6317
Item Type: Article (Research - C1)
ISSN: 1873-7862
Keywords: depression; anxiety; endocannabinoid system; CNR1; pharmacogenetic; treatment response
Date Deposited: 10 Feb 2010 04:10
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1103 Clinical Sciences > 110319 Psychiatry (incl Psychotherapy) @ 100%
SEO Codes: 92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920410 Mental Health @ 100%
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