NDLI: Vascular Endothelial Growth Factor Signaling is Required for the Behavioral Actions of Antidepressant Treatment: Pharmacological and Cellular Characterization

Content Provider	PubMed Central
Author	Greene, Joshua Banasr, Mounira Lee, Boyoung Jennifer, Warner-schmidt Duman, Ronald S.
Abstract	This study extends earlier work on the role of vascular endothelial growth factor (VEGF) in the actions of antidepressant treatment in two key areas. First, by determining the requirement for VEGF in the actions of a 5-HT selective reuptake inhibitor (SSRI), fluoxetine in behavioral models of depression/antidepressant response; and second, by examining the role of the 5-HT1A receptor subtype in the regulation of VEGF, and the cellular localization of antidepressant regulation of VEGF expression. The results show that pharmacological inhibition of VEGF receptor signaling blocks the behavioral actions of fluoxetine in rats subjected to chronic unpredictable stress. Infusions of SU5416 or SU1498, two structurally dissimilar inhibitors of VEGF–Flk-1 receptor signaling, block the antidepressant effects of fluoxetine on sucrose preference, immobility in the forced swim test, and latency to feed in the novelty suppressed feeding paradigm. We also show that activation of 5-HT1A receptors is sufficient to induce VEGF expression and that a 5-HT1A antagonist blocks both the increase in VEGF and behavioral effects induced by fluoxetine. Finally, double labeling studies show that chronic fluoxetine administration increases VEGF expression in both neurons and endothelial cells in the hippocampus. Taken together these studies show that VEGF is necessary for the behavioral effects of the SSRI fluoxetine, as well as norepinephrine selective reuptake inhibitor, and that these effects may be mediated by 5-HT1A receptors located on neurons and endothelial cells.
Related Links	http://dx.doi.org/10.1038/npp.2009.68
Ending Page	2468
Page Count	10
Starting Page	2459
File Format	PDF
ISSN	0893133X
e-ISSN	1740634X
Journal	Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology
Issue Number	11
Volume Number	34
Language	English
Publisher Date	2009-10-01
Access Restriction	Open
Subject Keyword	Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Pharmacology Psychiatry and Mental Health

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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