Publication Date:
2006-07-29
Description:
Serotonin [5-hydroxytryptamine (5-HT)] neurotransmission in the central nervous system modulates depression and anxiety-related behaviors in humans and rodents, but the responsible downstream receptors remain poorly understood. We demonstrate that global disruption of 5-HT2A receptor (5HT2AR) signaling in mice reduces inhibition in conflict anxiety paradigms without affecting fear-conditioned and depression-related behaviors. Selective restoration of 5HT2AR signaling to the cortex normalized conflict anxiety behaviors. These findings indicate a specific role for cortical 5HT2AR function in the modulation of conflict anxiety, consistent with models of cortical, "top-down" influences on risk assessment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weisstaub, Noelia V -- Zhou, Mingming -- Lira, Alena -- Lambe, Evelyn -- Gonzalez-Maeso, Javier -- Hornung, Jean-Pierre -- Sibille, Etienne -- Underwood, Mark -- Itohara, Shigeyoshi -- Dauer, William T -- Ansorge, Mark S -- Morelli, Emanuela -- Mann, J John -- Toth, Miklos -- Aghajanian, George -- Sealfon, Stuart C -- Hen, Rene -- Gingrich, Jay A -- KO8 MH01711/MH/NIMH NIH HHS/ -- P01 DA12923/DA/NIDA NIH HHS/ -- New York, N.Y. -- Science. 2006 Jul 28;313(5786):536-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Columbia University and the New York State Psychiatric Institute, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16873667" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Anxiety/*physiopathology
;
Cerebral Cortex/*metabolism
;
Conditioning (Psychology)
;
Conflict (Psychology)
;
Depression/physiopathology
;
Exploratory Behavior
;
Fear
;
Limbic System/metabolism
;
Mice
;
Mice, Knockout
;
Patch-Clamp Techniques
;
Periaqueductal Gray/metabolism
;
Prosencephalon/metabolism
;
Receptor, Serotonin, 5-HT2A/genetics/*metabolism
;
Receptor, Serotonin, 5-HT2C/metabolism
;
Receptors, Neurotransmitter/metabolism
;
Risk-Taking
;
Serotonin/physiology
;
*Signal Transduction
;
Synaptic Transmission
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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