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Does Pro(12)Ala Polymorphism Enhance the Physiological Role of PPARγ2?
A C Pereira1, R Oliveira, A C Castro
1Unit of Molecular Mechanisms of Disease (CISA) and Chemical and Biomolecular Sciences, School of Allied Health Sciences, Polytechnic Institute of Porto (ESTSP-IPP), Portugal ; Center of Pharmacology and Chemical Biopathology (U38-FCT), Medical Faculty, University of Porto, Portugal.
PPAR Research
|August 29, 2013
Summary
The Pro(12)Ala polymorphism in PPARγ2 may protect against type 2 diabetes (T2D) while increasing obesity risk. This genetic factor appears to enhance both fat storage and insulin sensitivity, suggesting a complex role in metabolic health.
Area of Science:
- Genetics and Molecular Biology
- Metabolic Disorders
- Public Health
Background:
- Obesity and type 2 diabetes mellitus (T2D) are significant global health issues with strong genetic components.
- Peroxisome proliferator-activated receptor gamma 2 (PPARγ2) is crucial for lipid metabolism and insulin sensitivity, primarily in adipose tissue.
Purpose of the Study:
- To investigate the association between the Pro(12)Ala polymorphism of PPARγ2 and the risk of T2D and obesity.
- To elucidate the dual role of this polymorphism in metabolic regulation.
Main Methods:
- A comprehensive meta-analysis of existing literature was conducted.
- Data from approximately 11,500 individuals (3,870 obese, 7,625 diabetic) were statistically analyzed.
Main Results:
- The Pro(12)Ala polymorphism showed a statistically significant protective effect against T2D (OR=0.702, P < 0.01).
- Conversely, the same polymorphism was associated with an increased risk of obesity (OR=1.196, P < 0.004).
Conclusions:
- The Pro(12)Ala polymorphism appears to enhance the adipogenic and antidiabetogenic functions of PPARγ.
- This suggests a complex evolutionary adaptation influencing metabolic pathways and potentially stabilizing PPARγ function.
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