Effects of PPARα, γ and δ haplotypes on plasma levels of lipids, severity and progression of coronary atherosclerosis and response to statin therapy in the lipoprotein coronary atherosclerosis study

Suetnee Chen, Natalia Tsybouleva, Christie M. Ballantyne, Antonio Gotto, A. J. Marian

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

Peroxisome proliferator-activated receptors (PPARs) α, δ and γ are nuclear transcription factors that regulate fatty acid biosynthesis. Our objectives were to determine the effects of PPAR haplotypes on biochemical, angiographie, clinical phenotypes and their responses to treatment with fluvastatin. We genotyped 372 Lipoprotein and Coronary Atherosclerosis Study subjects for seven single nucleotide polymorphisms (SNPs) in PPARα (-35 089A>C, 484C>G), δ (-4401C>T, 294T>C) and γ (34C>G, 25 506C>T, 161C>T) by restriction mapping or 5′ exonuclease assay. We reconstructed and estimated haplotypes frequencies using four algorithms. Linkage disequilibrium (LD) was calculated by D′ and haplotype effects by permutation and regression analyses. The PPARD and PPARG SNPs were in LD. The baseline plasma triglyceride levels and their responses to treatment with fluvastatin were associated with PPARD haplotypes (P = 0.01). Triglyceride levels were lowest and highest in homozygotes with diplotypes 3 and 4 (130.1 ± 40.8 and 194.2 ± 44.6 mg/dl, P < 0.001), respectively. PPARD haplotype 3 was also an independent determinant of plasma apolipoprotein (apo)B (P = 0.021) and apoC-III (P = 0.001) levels, mean number of coronary lesions (P = 0.046) and changes in triglyceride (P = 0.01) and apoC-III (P = 0.047) levels in response to fluvastatin. Plasma triglyceride levels (P = 0.044), the mean number of coronary lesions (P = 0.026) and changes in minimum lumen diameter in response to fluvastatin (P = 0.022) were also associated with PPARG haplotypes. No significant associations between PPARA haplotypes and the phenotypes or significant interactions between PPAR haplotypes and the occurrence of new clinical events were detected. PPARD and PPARG haplotypes are independent determinants of plasma levels of lipids, severity of coronary atherosclerosis and its response to therapy.

Original languageEnglish (US)
Pages (from-to)61-71
Number of pages11
JournalPharmacogenetics
Volume14
Issue number1
DOIs
StatePublished - Jan 2004

Keywords

  • Atherosclerosis
  • Cholesterol
  • Genetics
  • Haplotype
  • Pharmacogenetics
  • Polymorphism
  • Triglyceride

ASJC Scopus subject areas

  • Genetics
  • Pharmacology, Toxicology and Pharmaceutics(all)

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