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Abstract Title:

Perinatal citalopram does not prevent the effect of prenatal stress on anxiety, depressive-like behaviour and serotonergic transmission in adult rat offspring.

Abstract Source:

Eur J Neurosci. 2016 Feb ;43(4):590-600. Epub 2016 Jan 13. PMID: 26669896

Abstract Author(s):

Inbar Zohar, Shai Shoham, Marta Weinstock

Article Affiliation:

Inbar Zohar

Abstract:

It is still not clear whether the selective serotonin reuptake inhibitors frequently prescribed to depressed pregnant women improve the behavioural outcome in their children. The current study investigated whether administration of citalopram to pregnant rats could prevent anxiety and depressive-like behaviour induced by gestational stress in their offspring, and restore the expression of serotonin 1A autoreceptors in GABAergic interneurons in the medial prefrontal cortex and dorsal raphe nuclei in males, and of corticotropin-releasing factor type 2 receptors in GABAergic interneurons in the dorsal raphe nuclei in females. Activation of these receptors modulates serotonergic transmission to target areas and is reduced in a sex-dependent manner by prenatal stress. Citalopram (10 mg/kg/day), administered orally from day 7 of gestation until 21 days postpartum, prevented the increase in anxiety in stressed mothers but did not reduce anxiety and depressive-like behaviour in their offspring and even induced depressive-like behaviour in the offspring of control mothers. Citalopram failed to restore the reduction in the expression of serotonin 1A autoreceptors in the prefrontal cortex of males and in corticotropin-releasing factor type 2 receptors in the dorsal raphe nuclei of females induced by prenatal stress. Prenatal citalopram did not prevent the behavioural changesor reduction in serotonergic transmission to target areas induced by prenatal stress. It had adverse behavioural effects in the offspring of control rats, which, together with the lack of any change in prenatally-stressed rats, may be due to inhibition of the foetal serotonin transporter thereby preventing normal development of the serotonin system.

Study Type : Animal Study

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