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Related Experiment Videos

Preterm delivery and cytokine gene polymorphisms.

Rosiane Mattar1, Eduardo de Souza, Silvia Daher

  • 1Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, SP, Brazil.

The Journal of Reproductive Medicine
|June 2, 2006
PubMed
Summary
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Preterm delivery is not linked to common gene variations in Interleukin-6 (IL-6), Interleukin-10 (IL-10), Interferon-gamma (IFN-gamma), Transforming Growth Factor-beta1 (TGFbeta1), and Tumor Necrosis Factor-alpha (TNF-alpha). This study found no significant genetic associations with preterm birth risk.

Area of Science:

  • Immunogenetics
  • Reproductive Medicine
  • Genetics

Background:

  • Preterm delivery is a significant global health concern with complex etiology.
  • Cytokine gene polymorphisms have been implicated in pregnancy complications.
  • Investigating genetic factors may elucidate mechanisms underlying preterm birth.

Purpose of the Study:

  • To examine the association between preterm delivery and polymorphisms in key cytokine genes: IL-6, IL-10, IFN-gamma, TGFbeta1, and TNF-alpha.
  • To determine if specific genotypes of these cytokine genes increase the risk of preterm birth.

Main Methods:

  • A case-control study involving women with preterm labor (cases) and women with successful pregnancies (controls).
  • Genotyping of specific polymorphisms in TNF-alpha (-308), IL-10 (-1082), IL-6 (-174), TGFbeta1 (+10 and +25), and IFN-gamma (+874) was performed using DNA extracted from blood.

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  • Analysis included genotype frequencies comparison between case and control groups across different ethnicities.

    • Main Results:

    • No significant differences in genotype frequencies were observed for IL-10, TGF-beta, TNF-alpha, or IL-6 polymorphisms between women who delivered preterm and controls.
    • A non-significant trend towards increased frequencies of the IFN-gamma TT genotype was noted in Caucasian controls compared to cases.

    Conclusions:

    • The studied polymorphisms in IL-6, IL-10, IFN-gamma, TGFbeta1, and TNF-alpha genes are not significantly associated with preterm delivery.
    • These specific genetic variations do not appear to be major risk factors for preterm birth in the studied population.