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Updated: Dec 7, 2025

Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants
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5HTTLPR polymorphism and postpartum depression risk: A meta-analysis.

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  • 1Department of Anatomy, Changsha Medical University.

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|September 29, 2020
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Summary
This summary is machine-generated.

The 5-HTTLPR polymorphism, specifically its allelic and dominant models, may offer protection against postpartum depression (PPD). Further research is needed to confirm these findings in larger populations.

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Area of Science:

  • Genetics
  • Psychiatry
  • Reproductive Health

Background:

  • Postpartum depression (PPD) affects women of childbearing age and is a significant public health concern.
  • The serotonin-transporter-linked polymorphic region (5-HTTLPR) is a frequently studied genetic factor in PPD, but previous findings have been inconsistent.
  • A precise evaluation of the association between 5-HTTLPR and PPD susceptibility is warranted.

Purpose of the Study:

  • To conduct a meta-analysis to clarify the relationship between the 5-HTTLPR polymorphism and the risk of developing postpartum depression.
  • To consolidate existing evidence and provide a more definitive conclusion on the genetic association.

Main Methods:

  • A systematic literature search was performed across major databases (PubMed, Web of Science, EMASE, CNKI).
  • Meta-analysis was employed using odd ratios (ORs) and 95% confidence intervals (CIs) to assess the genetic association.
  • Six studies, comprising 519 cases and 737 controls, were included in the analysis.

Main Results:

  • The allelic (OR=0.72, P=0.0001) and dominant (OR=0.57, P=0.004) models of the 5-HTTLPR polymorphism showed a significant decrease in frequency among PPD patients compared to controls.
  • Subgroup analysis indicated a significant association between the allelic (OR=0.71, P=0.0001) and dominant (OR=0.51, P=0.003) models and PPD risk in the Asian population.
  • No significant association was found for the recessive model of 5-HTTLPR with PPD risk.

Conclusions:

  • The allelic and dominant models of the 5-HTTLPR polymorphism may act as protective factors against postpartum depression.
  • Larger-scale association studies and multicenter case-control studies are recommended to validate these findings.
  • Further investigation is needed to fully elucidate the role of 5-HTTLPR in PPD etiology.