The triglyceride-glucose index, a predictor of insulin resistance, is associated with subclinical atherosclerosis

Abstract

Insulin resistance is one of the most important risk factors that accelerate atherosclerosis. The goal of this study is to investigate the relationship between the triglyceride glucose (TyG) index and functional vessel disease measured using pulse wave velocity (PWV), in a nondiabetic asymptomatic Turkish population. Nondiabetic, healthy patients (n = 1095) with no previous history of coronary heart disease were enrolled. Functional vessel disease was detected by measuring PWV. The TyG index was calculated using the following equation: log [fasting triglycerides (mg/dL) x fasting glucose (mg/dL)/2]. The study population was divided into 2 groups based on their TyG index. The high TyG index group had higher PWV, corrected PWV, left ventricular mass index, body mass index, rates of hypertension, and was predominately male. Age, gender, blood urea nitrogen level, and TyG index were detected as independent risk factors of PWV in linear regression analysis. Triglyceride glucose index and age were also independent risk factors of the corrected PWV in logistic regression analysis. These findings show a relationship between TyG index and subclinical vessel disease, even in patients without a history of atherosclerotic cardiovascular disease or diabetes.