PPARγ Pro12Ala and C161T polymorphisms, but not PPARα L162V, are associated with osteoporosis risk in Turkish postmenopausal women

Abstract

Stimulation of peroxisome proliferator-activated receptors (PPARs) causes mesenchymal stem cells of the human bone marrow differentiate into adipocytes instead of osteoblasts leading to a decreased number of osteoblasts and a decrease in bone mineral density (BMD). Thus, PPARs may have impacts on bone metabolism. 224 postmenopausal women (171 osteoporotic and osteopenic, 53 healthy control) were included in this study. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and agarose gel electrophoresis techniques were performed to detect PPARα L162V and PPARγ Pro12Ala/C161T polymorphisms. The distribution of PPARγ Pro12Ala genotype and allele frequencies was not statistically different in control and patient (osteopenic+osteoporotic) groups (p>0.05). However, in the patient group, subjects with “Pro12Pro” genotype had lower lumbar spine (L1-L4) BMD values than those with “Ala” allele (p