Effect of green coffee extract supplementation on serum adiponectin concentration and lipid profile in patients with non-alcoholic fatty liver disease: A randomized, controlled trial.

Affiliation

Hosseinabadi S(1), Rafraf M(2), Asghari S(3), Asghari-Jafarabadi M(4), Vojouhi S(5).
Author information:
(1)Students' Research Committee, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran.
(2)Nutrition Research Center, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran. Electronic address: [Email]
(3)Nutrition Research Center, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran.
(4)Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran; Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
(5)Internists, 22 Bahman Hospital, Neyshabur University of Medical Sciences, Neyshabur, Iran.

Abstract

OBJECTIVES: The current study evaluated the effects of green coffee extract (GCE) on serum lipid profile and adiponectin levels in patients with nonalcoholic fatty liver disease (NAFLD). DESIGN: This randomized, double-blind, placebo-controlled clinical trial was conducted on NAFLD patients aged 20-60 years and body mass index (BMI) of 25-35 kg/m2. SETTING: Patients were recruited from the Bahman poly-clinic (Neyshabur, Iran) between January and June 2016. INTERVENTIONS: The study subjects were randomly assigned to receive a daily dose of 400 mg GCE (n = 24) or placebo (n = 24) for eight weeks. MAIN OUTCOME MEASURES: Serum liver enzyme levels, lipid profile, adiponectin concentrations, and hepatic steatosis grade were measured for all patients at baseline and the end of the trial. RESULTS: GCE supplementation significantly reduced BMI [mean difference (MD): -0.57 and 95 % confidence interval (CI): -0.84 to -0.29, P < 0.001] and increased serum high-density lipoprotein cholesterol (MD: 7.06, 95 % CI: 0.25-13.87, P < 0.05) compared to the control group. Serum total cholesterol decreased significantly within the GCE group (MD: -13.33, 95 % CI: -26.04 to -0.61, P < 0.05). Triglyceride levels reduced significantly in GCE group compared to the placebo group (MD: -37.91; 95 % CI: -72.03 to -3.80; P = 0.03). However, this reduction was not significant when was further adjusted for mean changes in BMI and daily energy intake (MD: -23.43; 95 % CI: -70.92 to 24.06; P = 0.32). Hepatic steatosis grade, liver enzymes, and adiponectin levels did not show significant differences between the two groups after the intervention. CONCLUSIONS: GCE supplementation improved serum lipid profile and BMI in individuals with NAFLD. GCE may be useful in controlling NAFLD risk factors.