当前位置： SCI文献检索 > BIOLOGICAL PSYCHIATRY期刊下所有文献 > Postnatal fluoxetine-evoked anxiety is prevented by concomitant 5-HT2A/C receptor blockade and mimicked by postnatal 5-HT2A/C receptor stimulation.

Postnatal fluoxetine-evoked anxiety is prevented by concomitant 5-HT2A/C receptor blockade and mimicked by postnatal 5-HT2A/C receptor stimulation.

Abstract：

BACKGROUND:Postnatal treatment with the selective serotonin reuptake inhibitor fluoxetine, evokes anxiety and depressive behavior in rodent models in adulthood. We examined the role of serotonin 2A (5-HT2A), serotonin 2C (5-HT2C) and serotonin 1A (5-HT1A) receptors, implicated in the development of anxiety, in the behavioral consequences of postnatal fluoxetine (PNFlx). METHODS:Control and PNFlx rat pups received concomitant treatment with the 5-HT2A/C receptor antagonist, ketanserin, the 5-HT2A receptor antagonist, MDL100907, the 5-HT2C receptor antagonist, SB242084, or the 5-HT1A receptor antagonist, WAY-100635, and were tested for behavior in adulthood. The effect of postnatal treatment with the 5-HT2A/C receptor agonist, DOI, on anxiety behavior was examined in adulthood. RESULTS:Postnatal 5-HT2A/C receptor blockade prevented PNFlx-evoked anxiety, attenuated depressive behavior, and normalized specific gene expression changes in the prefrontal cortex. Postnatal, selective 5-HT2A receptor antagonist treatment blocked PNFlx-evoked anxiety and depressive behavior, whereas 5-HT2C receptor antagonist treatment prevented anxiety but not depressive behavior. Postnatal 5-HT2A/C receptor stimulation was sufficient to evoke anxiety in adulthood. Serotonin 1A receptor blockade did not alter PNFlx-evoked anxiety but resulted in anxiety in control animals, an effect attenuated by concomitant 5-HT2A/C receptor blockade. CONCLUSIONS:Postnatal fluoxetine-evoked anxiety and depressive behavior, as well as specific gene expression changes in the prefrontal cortex, were prevented by 5-HT2A/C receptor blockade. Adult anxiety was evoked by either 5-HT2A/C receptor stimulation or 5-HT1A receptor blockade of naive control pups. Our findings implicate serotonin 2 receptors in the development of perturbed emotionality following PNFlx and suggest that an altered balance of signaling through 5-HT1A and 5-HT2A/C receptors in early life influences anxiety behavior.

journal_name

Biol Psychiatry

journal_title

Biological psychiatry

authors

Sarkar A,Chachra P,Vaidya VA

doi

10.1016/j.biopsych.2013.11.005

subject

Has Abstract

pub_date

2014-12-01 00:00:00

pages

858-68

issue

11

eissn

0006-3223

issn

1873-2402

pii

S0006-3223(13)00986-4

journal_volume

76

pub_type

杂志文章

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