4.5 Article

GESTATIONAL STRESS AND FLUOXETINE TREATMENT DIFFERENTIALLY AFFECT PLASTICITY, METHYLATION AND SEROTONIN LEVELS IN THE PFC AND HIPPOCAMPUS OF RAT DAMS

Journal

NEUROSCIENCE
Volume 327, Issue -, Pages 32-43

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuroscience.2016.03.068

Keywords

antidepressant medication; female; neurotransmitters; postpartum depression; neuroplasticity; SSRI

Categories

Funding

  1. Fonds De La Recherche Scientifique - F.R.S.-FNRS in Belgium
  2. Brain & Behavior Foundation NARSAD Young Investigator Grant

Ask authors/readers for more resources

Women are more likely to develop depression during childbearing years with up to 20% of women suffering from depression during pregnancy and in the postpartum period. Increased prevalence of depression during the perinatal period has resulted in frequent selective serotonin reuptake inhibitor (SSRI) antidepressant treatment; however the effects of such medications on the maternal brain remain limited. Therefore, the aim of the present study is to investigate the effects of the SSRI medication, fluoxetine, on neurobiological differences in the maternal brain. To model aspects of maternal depression, gestational stress was used. Sprague-Dawley rat dams were exposed to either gestational stress and/or fluoxetine (5 mg/kg/day) to form the following four groups: 1. Control + Vehicle, 2. Stress + Vehicle, 3. Control + Fluoxetine, and 4. Stress+ Fluoxetine. At weaning maternal brains were collected. Main findings show that gestational stress alone increased synaptophysin and serotonin metabolism in the cingulate cortex2 region of the cortex while fluoxetine treatment after stress normalized these effects. In the hippocampus, fluoxetine treatment, regardless of gestational stress exposure, decreased both global measures of methylation in the dentate gyrus, as measured by Dnmt3a immunoreactivity, as well as serotonin metabolism. No further changes in synaptophysin, PSD-95, or Dnmt3a immunoreactivity were seen in the cortical or hippocampal areas investigated. These findings show that gestational stress and SSRI medication affect the neurobiology of the maternal brain in a region-specific manner. This work adds to a much needed area of research aimed at understanding neurobiological changes associated with maternal depression and the role of SSRI treatment in altering these changes in the female brain. (C) 2016 IBRO. Published by Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.5
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available