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Published on: May 21, 2015
A possible role for the PPARG Pro12Ala polymorphism in preterm birth
Aline Meirhaeghe1, Colin A G Boreham, Liam J Murray
1INSERM U744, Institut Pasteur de Lille, Université de Lille, 1 rue du Pr. Calmette, BP 245, 59019 Lille Cedex, France. aline.meirhaeghe-hurez@pasteur-lille.fr
The PPARG Pro12Ala gene variant is linked to preterm birth and lower birth weight. This genetic factor may connect early birth complications with later metabolic diseases.
Area of Science:
- Genetics and Epigenetics
- Perinatal Medicine
- Metabolic Disease Research
Background:
- The association between preterm birth, low birth weight, and adult metabolic/vascular conditions is not fully understood.
- Genetic factors in infants may underlie the long-term consequences of adverse birth outcomes.
- The peroxisome proliferator-activated receptor gamma (PPARG) gene is implicated in metabolic regulation.
Purpose of the Study:
- To investigate the role of the PPARG Pro12Ala gene polymorphism in determining birth weight and gestational duration.
- To explore the potential genetic link between preterm birth and later metabolic morbidities.
Main Methods:
- Genotyping of the PPARG Pro12Ala polymorphism in two independent cross-sectional studies from Northern Ireland (total n = 1002).
- Statistical analysis to assess the association between the Ala12 allele and birth weight, gestational duration, and preterm birth.
- Logistic regression models adjusted for sex, maternal age, and study cohort.
Main Results:
- The PPARG Ala12 allele was significantly associated with lower birth weight (P = 0.03), primarily due to shorter gestational duration (P = 0.04).
- Carriers of the Ala12 allele had a higher frequency of preterm birth (35% vs. 22%, P = 0.027).
- Odds ratios for preterm birth were significantly elevated for Ala12 allele carriers (OR=1.9-4.2, P=0.0006-0.022). A decreased risk of miscarriage was also observed.
Conclusions:
- The PPARG Pro12Ala polymorphism may act as a genetic susceptibility factor for preterm birth.
- This genetic variant could bridge the link between preterm birth and the development of metabolic diseases in adulthood.
- Further research is warranted to elucidate the mechanisms involved.
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