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1.
Int J Clin Pract ; 75(11): e14852, 2021 Nov.
Article in English | MEDLINE | ID: mdl-34516703

ABSTRACT

BACKGROUND AND OBJECTIVES: Naringenin has been reported to have some promising pharmacological effects on the management of obesity and related metabolic complications including non-alcoholic fatty liver disease (NAFLD). Therefore, the present clinical trial study was done to assess the effects of naringenin supplementation on lipid profile, aminotransferase levels, severity of steatosis, as well as probability of fibrosis in overweight/obese patients with NAFLD. MATERIALS AND METHODS: This placebo-controlled, parallel randomised, double-blind clinical trial study was conducted on 44 eligible overweight/obese patients with NAFLD (naringenin-treated group (n = 22), control group (n = 22)) referred to the national Iranian oil company (NIOC) Central Hospital, Tehran City, Tehran Province, Iran. Participants were randomly assigned to receive naringenin capsules (100 mg) and identical placebo capsules twice a day, before lunch and dinner, for 4 weeks. The primary outcomes were improvement of liver steatosis and NAFLD fibrosis score (NFS), and secondary outcomes included changes in levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and lipid profile. RESULTS: Naringenin consumption significantly reduced percentages of NAFLD grades (P < .001), as well as, serum levels of triglyceride (TG) (P < .001), total cholesterol (TC) (P = .01), and low-density lipoprotein (LDL) (P = .02) and increased serum level of high-density lipoprotein (HDL) (P = .02) compared with the control group. Even after adjusting for the confounders, the results were significant. However, there were no significant changes in AST, ALT and NFS. CONCLUSION: Our findings revealed that daily intake of 200 mg of naringenin for 4 weeks had beneficial effects on lipid profile and percentages of NAFLD grades as an indicator for the severity of hepatic steatosis. Although, NFS values and serum levels of aminotransferase enzymes including AST and ALT did not remarkably change.


Subject(s)
Non-alcoholic Fatty Liver Disease , Dietary Supplements , Double-Blind Method , Flavanones , Humans , Iran , Lipids , Liver , Liver Cirrhosis , Non-alcoholic Fatty Liver Disease/complications , Non-alcoholic Fatty Liver Disease/drug therapy , Obesity/complications , Obesity/drug therapy , Overweight/complications , Overweight/drug therapy , Probability
2.
Int J Vitam Nutr Res ; 90(1-2): 17-22, 2020 Jan.
Article in English | MEDLINE | ID: mdl-30982443

ABSTRACT

Purpose: In inflammatory bowel disease increased asymmetric dimethylarginine (ADMA) levels could inhibit nitric oxide (NO) synthase. Vitamin D may increase activity and expression of endothelial NO synthase, which could be done through its possible mechanism of decreasing ADMA levels. The aim of this study is to investigate the possible effect of Vitamin D3 on serum ADMA levels in ulcerative colitis (UC) patients. Methods: Ninety mild to moderate UC patients were randomized. Each patient received one single muscular injection of 300,000 IU (7500 µg) Vitamin D3 (Vitamin D group) or 1 ml normal saline (Placebo group). At baseline and 90 days after the intervention measurements were done. Data were analyzed using independent t-test and analysis of covariance. Baseline correlations were assessed by Pearson and Spearman correlation coefficients. Results: Following data analysis of 86 participants (40 in placebo and 46 in vitamin D group), there was no correlation between baseline ADMA with baseline vitamin D, ESR and hs-CRP at baseline (p = 0.77) and at the end of study (p = 0.82). Serum ADMA levels were not statistically different between two groups. Adjustment for baseline ADMA levels and baseline body mass index (BMI) did not change the results. With subgroup analyses based on gender and vitamin D level no statistical differences in ADMA levels between two groups were found. Conclusions: In this study, we found no significant changes in serum ADMA levels 3 months following a high dose vitamin D administration in mild to moderate UC patients. Further studies in vitamin D deficient patients are needed.


Subject(s)
Colitis, Ulcerative , Vitamin D , Vitamins/pharmacology , Arginine/analogs & derivatives , Arginine/chemistry , Arginine/pharmacology , Colitis, Ulcerative/physiopathology , Humans , Vitamin D/pharmacology
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