Hippocampal transcriptional and neurogenic changes evoked by combination yohimbine and imipramine treatment

Progress in Neuro-psychopharmacology & Biological Psychiatry
Basma Fatima Anwar HusainVidita A Vaidya

Abstract

Adjunct α2-adrenoceptor antagonism is a potential strategy to accelerate the behavioral effects of antidepressants. Co-administration of the α2-adrenoceptor antagonist yohimbine hastens the behavioral and neurogenic effects of the antidepressant imipramine. We examined the transcriptional targets of short duration (7days), combination treatment of yohimbine and imipramine (Y+I) within the adult rat hippocampus. Using microarray and qPCR analysis we observed functional enrichment of genes involved in intracellular signaling cascades, plasma membrane, cellular metal ion homeostasis, multicellular stress responses and neuropeptide signaling pathways in the Y+I transcriptome. We noted reduced expression of the α2A-adrenoceptor (Adra2a), serotonin 5HT2C receptor (Htr2c) and the somatostatin receptor 1 (Sstr1), which modulate antidepressant action. Further, we noted a regulation of signaling pathway genes like inositol monophosphatase 2 (Impa2), iodothyronine deiodinase 3 (Dio3), regulator of G-protein signaling 4 (Rgs4), alkaline ceramidase 2 (Acer2), doublecortin-like kinase 2 (Dclk2), nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha (Nfkbia) and serum/glucocorticoid-regulated kinase 1 (Sgk1), sev...Continue Reading

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Citations

Nov 19, 2015·Proceedings of the National Academy of Sciences of the United States of America·Min HuElisabet Stener-Victorin

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