02 November 2016 : Clinical Research
Med Sci Monit 2016; 22:4146-4151
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is a chronic liver disease. NAFLD includes a spectrum of hepatic pathologies: simple fatty liver, steatohepatitis and cirrhosis. Insulin resistance may contribute to NAFLD. The liver plays an important role in the production and metabolism of homocysteine (HCY), which is known to be an independent risk factor for cardiovascular disease. High HCY level can aggravate NAFLD by increasing the reactive oxygen species and activating oxidative stress. In this study, we investigated the relationship between HCY and NAFLD in euglycemic patients.
MATERIAL AND METHODS: A total of 1143 euglycemic patients were recruited: 519 patients with non-alcoholic fatty liver disease (NAFLD) and 624 sex and age-matched controls without NAFLD.
RESULTS: The NAFLD group had significantly higher HCY level (13.78±5.84 vs. 11.96±3.58 mmol/L, p<0.001), as well as higher body mass index (BMI), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), triglyceride (TG), glutamic-pyruvic transaminase (ALT), glutamic-oxalacetic transaminase (AST), fasting plasma glucose (FPG), fasting insulin (FINS), homeostasis model assessment for insulin resistance (HOMA-IR), homeostasis model assessment for beta cell function (HOMA-B), and lower high density lipoprotein cholesterol (HDL-C). HCY level was positively correlated with HOMA-IR (r=0.239, p<0.001), TG (r=0.356, p<0.001) and negatively correlated with HDL-C (r=–0.161, p<0.001). In the logistic regression analysis, BMI (beta=0.345, p<0.001), HOMA-IR (beta=0.654, p<0.01), TG (beta=0.881, p<0.001), and HCY (beta=0.04, p=0.044) were the predictors of NAFLD.
CONCLUSIONS: Higher HCY level existed in NAFLD patients and was correlated with the severity of insulin resistance. HCY is an independent risk factor for NAFLD.
Keywords: Blood Glucose - metabolism, Case-Control Studies, Cholesterol - blood, Cholesterol, LDL - blood, Homocysteine - blood, Insulin - blood, Insulin Resistance, Liver Cirrhosis - blood, Non-alcoholic Fatty Liver Disease - blood, Reactive Oxygen Species - metabolism, Risk Factors, Triglycerides - blood
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