Research Article Details

Article ID: A17922
PMID: 27475283
Source: Clin Nutr
Title: Glucose homeostasis, insulin resistance and inflammatory biomarkers in patients with non-alcoholic fatty liver disease: Beneficial effects of supplementation with microalgae Chlorella vulgaris: A double-blind placebo-controlled randomized clinical trial.
Abstract: BACKGROUND: Chlorella vulgaris (C. vulgaris) is reported to improve dyslipidemia and hypertension; however, its effect on inflammatory biomarkers and insulin resistance has not been noticed thus far. Non-alcoholic fatty liver disease (NAFLD) as a hepatic symptom of metabolic syndrome is strongly associated with insulin resistance and inflammation. AIM OF THE STUDY: In the current interventional trial, we aimed to study the effects of C.&#160;vulgaris supplementation on glucose homeostasis, insulin resistance and inflammatory biomarkers in patients with NAFLD. METHODS: Seventy NAFLD patients confirmed by ultra-sonographic findings were randomly assigned into intervention group (four 300&#160;mg tablets of C. vulgaris) or placebo group (four 300&#160;mg tablets of placebos) for 8 weeks. Anthropometric measurements, liver enzymes, fasting serum glucose (FSG), insulin, high sensitive C-reactive protein (hs-CRP) and tumor necrosis factor-alpha (TNF-&#945;) were assessed and homeostatic model assessment (HOMA) score for insulin resistance was estimated before and after the intervention. RESULTS: Anthropometric measurements decreased significantly in both group (p&#160;<&#160;0.001). However, mean reduction in weight was significantly higher in C. vulgaris - treated group compared to placebo group. Serum concentrations of liver enzymes, FSG and hs-CRP also significantly decreased and serum insulin concentration and HOMA score increased significantly only in C. vulgaris-treated group (P&#160;<&#160;0.001, P&#160;<&#160;0.006 and P&#160;<&#160;0.025, respectively). Mean change in serum glucose and TNF-&#945; levels were significant between the groups even after adjusting for the serum insulin and baseline values of variables (P&#160;=&#160;0.014, P&#160;=&#160;0.005, P&#160;=&#160;0.014, respectively); between-group differences were not significant for the other variables by the end of study. CONCLUSION: To our finding, C. vulgaris supplementation could be considered as an adjunctive therapy to decrease weight and improve glycemic status and reducing hs-CRP as well as improving liver function in patients with NAFLD. IRCT NUMBER: 201202233320N7.
DOI: 10.1016/j.clnu.2016.07.004