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Abstract
Objective: Peroxisome proliferator-activated receptor gamma (PPARG) is a transcription factor involved in atherosclerosis and related diseases. In this study, we aimed to investigate whether PPARG C161T was associated with lipid levels and large-artery atherosclerosis (LAA) ischemic stroke in a Han Chinese population in Guangdong province.
Methods: The genotype PPARG C161T in 149 LAA ischemic stroke patients and 125 healthy controls was examined by polymerase chain reaction-restriction fragment length polymorphism (RFLP) assay. Associations with LAA ischemic stroke were analyzed for PPARG C161T genotype, total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C), and a logistic regression analysis was performed to identify risk factors for LAA ischemic stroke.
Results: The frequency of CC was higher than that of CT + TT and was significantly associated with LAA ischemic stroke. In both the LAA and control groups, TC and LDL-C levels were significantly higher in the CC type than the CT + TT, but TG and HDL-C levels were comparable. The only verified independent risk factors for LAA ischemic stroke were ischemic heart disease (OR: 2.784, 95% CI: 1.377–5.632; p = 0.004) and systolic blood pressure (OR: 1.014, 95% CI: 1.001–1.026; p = 0.029); the PPARG C161T allele was not independently associated with an increased risk of LAA ischemic stroke (OR = 0.697, 95% CI: 0.372–1.305; p = 0.260).
Conclusion: In this Han population, PPARG C161T CT/TT was associated with LAA ischemic stroke and lower levels of blood TC and LDL-C, but was not an independent risk factor for LAA ischemic stroke.