Some evidence exists in supporting the beneficial effects of coenzyme Q10 (CoQ10) on oxidative stress. Since the findings of studies over the impact of CoQ10 supplementation on oxidative stress are contradictory, this study was conducted. The aim was to evaluate CoQ10 supplementation effect on total antioxidant capacity (TAC), malondialdehyde (MDA), glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT) levels using data collected from randomized controlled trials (RCTs). Several databases including PubMed, Web of Science, Google Scholar, and Scopus were comprehensively searched up to 23 January 2019 to identify RCTs. A random-effects model, standardized mean difference (SMD), and 95% confidence interval (CI) were applied for data analysis. According to the meta-analysis results on 19 eligible studies, CoQ10 increased the levels of TAC (SMD = 1.29; 95% CI = 0.35-2.23; p = .007), GPX (SMD = 0.45; 95% CI = 0.17-0.74; p = .002), SOD (SMD = 0.63; 95% CI = 0.29-0.97; p < .0001), and CAT (SMD = 1.67; 95% CI = 0.29-3.10; p = .018) significantly. This supplementation also caused a significant reduction in MDA levels (SMD = −1.12; 95% CI = −1.58 to −0.65; p < .0001). However, the results of SOD and CAT should be stated carefully due to the publication bias. In conclusion, this research indicated that CoQ10 supplementation had beneficial effects on oxidative stress markers. However, further studies are needed to confirm these findings.

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Background: Previous studies showed an association between dietary intakes and psychological disorders. This study aimed to assess the association between dietary intakes and psychiatric disorders in Iran. Methods: In this cross sectional research, the data on 9965 adults were extracted from enrollment phase of Yazd Health Study (YaHS); a population-based cohort study on Iranian adults which was conducted during 2014 to 2016. Data on socio-demographic characteristics, tobacco use, history of chronic disease, and dietary assessment were collected using a validated researcher-made questionnaire. Moreover, anthropometric measurement was conducted. Psychological and physical activity assessments were also performed by depression, anxiety and stress scale questionnaire (DASS 21 items) and the short form of the International Physical Activity Questionnaire (IPAQ) respectively. Finally, multiple logistic regression analysis was used to evaluate relation between dietary intakes and psychological disorders.

Objective: Assessing relationship between low carbohydrate diet (LCD) score and metabolic syndrome (Mets) in Iranian adults. Design: Cross-sectional study Setting: Yazd Health Study and Taghzieh Mardom-e-Yazd study. Participants: Data of 2074 participants were used. Dietary intakes were assessed by a validated semi-quantitative food frequency questionnaire. LCD score was calculated for each person by summing up the assigned scores to deciles of energy percentages from macronutrients. Mets was evaluated using National Cholesterol Education Program Adult Treatment Panel III. Eventually, association between LCD score and Mets was examined using logistic regression. Results: Total Mets prevalence was approximately 40.5%. After adjustment for confounders, subjects in the higher quartile of LCD score had a significant lower chance of Mets versus lower quartile among all participants (Q4 versus Q1: OR: 0.68, 95% CI: 0.50-0.92) and separately in men (Q4 versus Q1: OR: 0.54, 95% CI: 0.34-0.86) and women (Q2 versus Q1: OR: 0.53, 95% CI: 0.34-0.82). Furthermore, more LCD adherence in men reduced abdominal obesity by 47% (Q3 versus Q1OR: 0.53, 95% CI: 0.28-0.99). Low HDL cholesterol was also observed both in the highest quartile of LCD score in all participants (OR: 0.74, 95% CI: 0.56-0.99) and separately in men (OR: 0.63, 95% CI: 0.40-0.98) versus the first quartile. Conclusions: More adherence to LCD might be related to lower chance of Mets and some of its components such as low HDL cholesterol and abdominal obesity specially in men. Further studies are required to confirm the findings.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Background Nonalcoholic fatty liver disease (NAFLD) is one of the most common chronic liver diseases worldwide. Evidence showed that anthocyanins might have effects on NAFLD. Protective effects of Cornelian cherry ( Cornus mas L.) extract, as an anthocyanins-rich source, on liver were reported in animal studies. However, very few clinical trials were conducted in this regard. Thus, the aim of this research will be to evaluate the effect of supplementation with total anthocyanin-base standardized cornelian cherry fruit extract on liver function (Serum levels of Alanine aminotransferase (ALT), Aspartate aminotransferase (AST), cytokeratin-18 fragment M30 (CK-18 M30), as well as steatosis and fibrosis of liver), tumor necrosis factor α (TNF-α), malondealdehyde (MDA), and adiponectin in patients with NAFLD. Methods In a double-blind randomized clinical trial, 80 NAFLD patients will be studied. The patients will be randomly assigned into two groups. The intervention group will receive the cornelian cherry extract, containing 320 mg.d − 1 anthocyanins, per day for 12 weeks. The control group will also take the placebo daily for 12 weeks. Liver function (Serum levels of AST, ALT and CK-18 M30; steatosis and fibrosis of liver), serum levels of TNF-α, MDA, and adiponectin will be measured at the baseline and the end of trial for both groups and their results will be compared. Discussion Considering evidences about the useful impacts of anthocyanins on NAFLD, the effects of supplementation with cornelian cherry extract will be investigated on the important variables related to NAFLD. Trial registration Iranian Registry of Clinical Trials ( IRCT20180419039359N1 ).

This systematic review and meta‐analysis aimed to assess effect of consuming anthocyanins (ACNs; pure ACNs or products containing ACNs) on liver enzymes levels including alanine aminotransferase (ALT), aspartate aminotransferase (AST), and gamma‐glutamyl transferase (GGT). Although no significant impact was detected on the liver enzymes, a significant reduction was observed on ALT (WMD = −4.932 U/L, 95% CI = −9.848 to −0.015, p = .049) and AST (WMD = −3.464 U/L, 95% CI = −6.034 to −0.894, p = .008) in the studies that examined them as primary outcomes. A significant decrease was found on AST among the healthy subjects (WMD = −4.325 U/L, 95% CI = −8.516 to −0.134, p = .043) and in the studies that used products containing ACNs as intervention (WMD = −2.201 U/L, 95% CI = −4.275 to −0.127, p = .037). Although no significant relation was detected between ACNs dosage and the liver enzymes, significant associations were found between the duration of trial with ALT (ALT: slope: 0.09, 95% CI = 0.040 to 0.139, p = .0003) and AST (slope: 0.076, 95% CI = 0.037 to 0.115, p = .0001). In conclusion, although ACNs had no significant effect on the liver enzymes, a significant decrease was discovered on ALT and AST in the studies that evaluated them as primary outcomes. A significant reduction was observed in AST in the healthy individuals and in the studies used products containing ACNs as intervention. Significant relations were also found between the duration of trial with ALT and AST. Further studies are required to confirm these results.