Title

Peripartum neuroactive steroid and gamma-aminobutyric acid profiles in women at-risk for postpartum depression

UMMS Affiliation

Center for Psychopharmacologic Research and Treatment, Department of Psychiatry; Women's Mental Health Program; Department of Quantitative Health Sciences; Proteomics and Mass Spectrometry Facility; Department of Biochemistry and Molecular Pharmacology

Date

8-1-2016

Document Type

Article

Disciplines

Endocrinology, Diabetes, and Metabolism | Mental Disorders | Obstetrics and Gynecology | Psychiatry | Translational Medical Research | Women's Health

Abstract

Neuroactive steroids (NAS) are allosteric modulators of the gamma-aminobutyric acid (GABA) system. NAS and GABA are implicated in depression. The peripartum period involves physiologic changes in NAS which may be associated with peripartum depression and anxiety. We measured peripartum plasma NAS and GABA in healthy comparison subjects (HCS) and those at-risk for postpartum depression (AR-PPD) due to current mild depressive or anxiety symptoms or a history of depression. We evaluated 56 peripartum medication-free subjects. We measured symptoms with the Hamilton Depression Rating Scale (HAM-D17), Hamilton Anxiety Rating Scale (HAM-A) and Spielberger State-Trait Anxiety Inventory-State (STAI-S). Plasma NAS and GABA were quantified by liquid chromatography-mass spectrometry. We examined the associations between longitudinal changes in NAS, GABA and depressive and anxiety symptoms using generalized estimating equation methods. Peripartum GABA concentration was 1.9+/-0.7ng/mL (p=0.004) lower and progesterone and pregnanolone were 15.8+/-7.5 (p=0.04) and 1.5+/-0.7ng/mL (p=0.03) higher in AR-PPD versus HCS, respectively. HAM-D17 was negatively associated with GABA (beta=-0.14+/-0.05, p=0.01) and positively associated with pregnanolone (beta=0.16+/-0.06, p=0.01). STAI-S was positively associated with pregnanolone (beta=0.11+/-0.04, p=0.004), allopregnanolone (beta=0.13+/-0.05, p=0.006) and pregnenolone (beta=0.02+/-0.01, p=0.04). HAM-A was negatively associated with GABA (beta=-0.12+/-0.04, p=0.004) and positively associated with pregnanolone (beta=0.11+/-0.05, p=0.05). Altered peripartum NAS and GABA profiles in AR-PPD women suggest that their interaction may play an important role in the pathophysiology of peripartum depression and anxiety.

Rights and Permissions

Citation: Psychoneuroendocrinology. 2016 Aug;70:98-107. doi: 10.1016/j.psyneuen.2016.05.010. Epub 2016 May 9. Link to article on publisher's site

Related Resources

Link to Article in PubMed

Keywords

UMCCTS funding, Anxiety, Depression, Neuroactive steroid, Postpartum, Pregnancy, γ-aminobutyric acid

PubMed ID

27209438