Neuropeptide Y (NPY) gene: Impact on emotional processing and treatment response in anxious depression
Abstract
Neuropeptide Y (NPY) has been found to play a role in the pathomechanism of both anxiety and depression. Thus, NPY is a promising candidate in the investigation of the clinical phenotype of “anxious depression”.
Five NPY gene variants were investigated for an influence on antidepressant treatment response in a sample of 256 patients with depression. Additionally, NPY gene impact on amygdala activation during facial emotion processing was analyzed in a subsample of 35 depressed patients.
Particularly in anxious depression, the less active NPY rs16147 −399C allele conferred slow response after 2
weeks and failure to achieve remission after four weeks of treatment. The rs16147 C allele was further associated with stronger bilateral amygdala activation in response to threatening faces in an allele-dose fashion.
The present results point towards a possible influence of functional NPY gene variation on antidepressant treatment response in anxious depression, potentially conveyed by altered emotional processing.
Keywords: Pharmacogenetics, Imaging genetics, Depression, Anxiety, NPY
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PII: S0924-977X(09)00236-3
doi:10.1016/j.euroneuro.2009.09.006
© 2009 Elsevier B.V. and ECNP. All rights reserved.
