The effects of curcumin supplementation on liver function, metabolic profile and body composition in patients with non-alcoholic fatty liver disease: A systematic review and meta-analysis of randomized controlled trials.
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease worldwide. Curcumin is the anti-inflammatory, antioxidant, anti-diabetic and also anti-hyperlipidemia agent and uses as herbal medicine for treating liver diseases.
The present systematic review and meta-analysis was conducted to investigate the effects of curcumin supplementation on metabolic markers and anthropometric parameters in patients with (NAFLD).
PubMed, Embase, Scopus, Web of Science and Cochrane Library were systematically searched to identify relevant randomized controlled trials (RCTs) investigating the effects of curcumin supplementation on the arms of this study in patients with NAFLD up to September 2019. Mean difference (MD) was pooled using a random effects model. Potential publication bias was assessed using Egger's weighted regression tests.
After excluding irrelevant records, 9 RCTs included in this meta-analysis. Pooled results of included studies indicated a significant reduction in alanine transaminase (ALT), aspartate transaminase (AST), serum total cholesterol (TC), low density lipoprotein (LDL), fasting blood sugar (FBS), HOMA-IR, serum insulin and waist circumference (WC), but not in serum triglyceride (TG), high density lipoprotein (HDL), HbA1c, body weight and body mass index (BMI) following curcumin supplementation. Additionally, age- and baseline TC-based subgroup analysis indicated a significant reduction in TG and also duration- and dosage-based showed a significant change in BMI.
The current study revealed that curcumin supplementation has favorable effect on metabolic markers and anthropometric parameters in patients with NAFLD.
Jalali M
，Mahmoodi M
，Mosallanezhad Z
，Jalali R
，Imanieh MH
，Moosavian SP
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Efficacy and safety of dietary polyphenol supplementation in the treatment of non-alcoholic fatty liver disease: A systematic review and meta-analysis.
Dietary polyphenol treatment of non-alcoholic fatty liver disease (NAFLD) is a novel direction, and the existing clinical studies have little effective evidence for its therapeutic effect, and some studies have inconsistent results. The effectiveness of dietary polyphenols in the treatment of NAFLD is still controversial. The aim of this study was to evaluate the therapeutic efficacy of oral dietary polyphenols in patients with NAFLD.
The literature (both Chinese and English) published before 30 April 2022 in PubMed, Cochrane, Medline, CNKI, and other databases on the treatment of NAFLD with dietary polyphenols was searched. Manual screening, quality assessment, and data extraction of search results were conducted strictly according to the inclusion and exclusion criteria. RevMan 5.3 software was used to perform the meta-analysis.
The RCTs included in this study involved dietary supplementation with eight polyphenols (curcumin, resveratrol, naringenin, anthocyanin, hesperidin, catechin, silymarin, and genistein) and 2,173 participants. This systematic review and meta-analysis found that 1) curcumin may decrease body mass index (BMI), Aspartate aminotransferase (AST), Alanine aminotransferase (ALT), Triglycerides (TG) total cholesterol (TC), and Homeostasis Model Assessment-Insulin Resistance (HOMA-IR) compared to placebo; and curcumin does not increase the occurrence of adverse events. 2) Although the meta-analysis results of all randomized controlled trials (RCTs) did not reveal significant positive changes, individual RCTs showed meaningful results. 3) Naringenin significantly decreased the percentage of NAFLD grade, TG, TC, and low-density lipoprotein cholesterol (LDL-C) and increased high-density lipoprotein cholesterol (HDL-C) but had no significant effect on AST and ALT, and it is a safe supplementation. 4) Only one team presents a protocol about anthocyanin (from Cornus mas L. fruit extract) in the treatment of NAFLD. 5) Hesperidin may decrease BMI, AST, ALT, TG, TC, HOMA-IR, and so on. 6) Catechin may decrease BMI, HOMA-IR, and TG level, and it was well tolerated by the patients. 7) Silymarin was effective in improving ALT and AST and reducing hepatic fat accumulation and liver stiffness in NAFLD patients.
Based on current evidence, curcumin can reduce BMI, TG, TC, liver enzymes, and insulin resistance; catechin can reduce BMI, insulin resistance, and TG effectively; silymarin can reduce liver enzymes. For resveratrol, naringenin, anthocyanin, hesperidin, and catechin, more RCTs are needed to further evaluate their efficacy and safety.
Yang K
，Chen J
，Zhang T
，Yuan X
，Ge A
，Wang S
，Xu H
，Zeng L
，Ge J
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《Frontiers in Immunology》
Does turmeric/curcumin supplementation improve serum alanine aminotransferase and aspartate aminotransferase levels in patients with nonalcoholic fatty liver disease? A systematic review and meta-analysis of randomized controlled trials.
We performed a meta-analysis to evaluate the efficacy of turmeric/curcumin supplementation on serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in patients with nonalcoholic fatty liver disease (NAFLD). We searched PubMed, Scopus, Cochrane Library, ISI Web of Science, and Google Scholar up to November 20, 2018. Studies that examined the effect of turmeric/curcumin on serum concentrations of ALT and AST among patients with NAFLD were included. The mean difference and standard deviation (SD) of changes in ALT and AST between intervention and control groups were used as effect size for the meta-analysis. A total of six randomized controlled trials (RCTs) were eligible for meta-analysis. Results from pooled analysis revealed that turmeric/curcumin supplementation reduced ALT (MD: -7.31 UL/L, 95% CI [-13.16, -1.47], p = 0.014) and AST (MD: -4.68 UL/L, 95% CI [-8.75 -0.60], p = 0.026). When RCTs stratified on the basis of their treatment duration, the significant reduction in serum concentrations of ALT and AST was observed only in studies lasting less than 12 weeks. This review suggests that turmeric/curcumin might have a favorable effect on serum concentrations of ALT and AST in patients with NAFLD. However, further clinical trials are needed to confirm these findings.
Goodarzi R
，Sabzian K
，Shishehbor F
，Mansoori A
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