Association of PPAR Alpha Intron 7 G/C, PPAR Gamma 2 Pro12Ala, and C161T Polymorphisms with Serum Fetuin-A Concentrations

Background. Both peroxisome activator proteins (PPARs) and fetuin-A play a role in lipid and glucose metabolism. Aims. We investigated whether PPAR intron 7 G2468/C and PPARγ2 Pro12Ala and PPARγ exon 6 C161T polymorphisms are associated with serum fetuin-A concentrations. Patients and Methods. The PPAR intron 7 G/C polymorphism was studied in cohort 1 (79 reference individuals, 165 postinfarction patients). The two PPARγ polymorphisms were investigated in cohort 2 (162 reference individuals, 165 postinfarction patients). Fetuin-A levels and PPAR polymorphisms were determined by radial immunodiffusion and polymerase chain reaction-restriction fragment length polymorphism techniques. Results. The C allele variant of PPAR intron 7 G2467C was associated with higher fetuin-A levels . Postinfarction status , PPAR intron 7 GG/GC/CC genotypes , and the C allele were the strongest determinants of fetuin-A concentration in a multiple regression model. Higher fetuin-A levels were associated with the Pro variant of PPARγ2 . Postinfarction status and BMI but not PPARγ2 Pro were the strongest determinants of fetuin-A concentrations. PPAR exon 6 C161T genotypes were not associated with fetuin-A levels. Conclusions. Fetuin-A was determined mainly by the PPAR intron 7C allele and postinfarction status in cohort 1 and the BMI and postinfarction in cohort 2. The PPAR intron 7C and PPAR2 Pro variants are associated with fetuin-A levels.

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