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Vajdi M, Noshadi N, Hassanizadeh S, Bonyadian A, Seyedhosseini-Ghaheh H, Askari G. The effects of alpha lipoic acid (ALA) supplementation on blood pressure in adults: a GRADE-assessed systematic review and dose-response meta-analysis of randomized controlled trials. Front Cardiovasc Med 2023; 10:1272837. [PMID: 37942070 PMCID: PMC10628535 DOI: 10.3389/fcvm.2023.1272837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/12/2023] [Indexed: 11/10/2023] Open
Abstract
Introduction There have been various clinical studies on the effect of Alpha lipoic acid (ALA) supplementation on blood pressure (BP), but the findings from these are contradictory. Therefore, we performed a systematic review and dose-response meta-analysis to summarize the relation of ALA supplementation and systolic blood pressure (SBP) and diastolic blood pressure (DBP) in adults. Methods A comprehensive search was conducted in Medline (PubMed), Embase, Scopus, and ProQuest up to July 2023. Randomized controlled trials (RCTs) evaluating the effect of ALA on SBP and DBP were included. The pooled weighted mean difference (WMD) of included trials was estimated using a random-effects model. The dose-dependent effect was also assessed. Results and discussion A total of 11 RCTs with the participation of 674 patients were included. The result of the meta-analysis indicated that using ALA supplementation significantly reduced the SBP (WMD = -5.46 mmHg; 95% CI: -9.27, -1.65; p < 0.001) and DBP (WMD = -3.36 mmHg, 95% CI: -4.99, -1.74; p < 0.001). The ALA administrations significantly reduced SBP and DBP at the dosages of <800 mg/day, when administered for ≤12 weeks. The present meta-analysis revealed that ALA supplementation could exert favorable effects on SBP and DBP. Further well-designed studies with larger samples are needed to ascertain the long-term effects of ALA on BP. Systematic Review Registration https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=447658, identifier PROSPERO: CRD42023447658.
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Affiliation(s)
- Mahdi Vajdi
- Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nooshin Noshadi
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shirin Hassanizadeh
- Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Atefeh Bonyadian
- Department of Clinical Nutrition, Faculty of Nutrition and Food Sciences, Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Gholamreza Askari
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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Vajdi M, Musazadeh V, Khajeh M, Safaei E, Darzi M, Noshadi N, Bazyar H, Askari G. The effects of royal jelly supplementation on anthropometric indices: a GRADE-assessed systematic review and dose-response meta-analysis of randomized controlled trials. Front Nutr 2023; 10:1196258. [PMID: 37599677 PMCID: PMC10438987 DOI: 10.3389/fnut.2023.1196258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/20/2023] [Indexed: 08/22/2023] Open
Abstract
Inconsistent data are available about the effect of royal jelly supplementation on anthropometric indices in humans. This systematic review and meta-analysis was done to summarize data from available randomized controlled trials (RCTs) on the effect of royal jelly supplementation on anthropometric indices such as body weight (BW), body mass index (BMI), and fat mass (FM) in adults. We systematically searched Embase, PubMed, Web of Science, and Scopus databases up to March 2023. All RCTs assessing the effect of royal jelly on anthropometric indices were included. Data were pooled using the random-effects method and were expressed as weighted mean difference (WMD) and 95% confidence intervals (CIs). Sensitivity and subgroup analyses were also performed. Out of 1,492 records, 10 studies that enrolled 512 participants were included. There was no significant effect on BW (WMD: -0.29 kg, 95% CI: -1.24, 0.65, p = 0.543), BMI (WMD: 0.11 kg/m2, 95% CI: -0.29, 0.52, p = 0.583), and FM (WMD: 0.02%, 95% CI: -0.41, 0.46, p = 0.84). However, we observed a reduction in BW and BMI following royal jelly intake in subgroup of royal jelly dosage <3,000 mg/day. Although the royal jelly supplementation significantly reduced BW and BMI at the dosages <3,000 mg/day, until additional trials have been conducted to assess the effects on obesity measures, it is best to prescribe royal jelly with caution.
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Affiliation(s)
- Mahdi Vajdi
- Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Vali Musazadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahsa Khajeh
- Student Research Committee, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ehsan Safaei
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Melika Darzi
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Nooshin Noshadi
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Bazyar
- Student Research Committee, Sirjan School of Medical Sciences, Sirjan, Iran
- Department of Public Health, Sirjan School of Medical Sciences, Sirjan, Iran
| | - Gholamreza Askari
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research Center, Isfahan University of Medical Science, Isfahan, Iran
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Noshadi N, Heidari M, Naemi Kermanshahi M, Zarezadeh M, Sanaie S, Ebrahimi-Mameghani M. Effects of Probiotics Supplementation on CRP, IL-6, and Length of ICU Stay in Traumatic Brain Injuries and Multiple Trauma Patients: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Evid Based Complement Alternat Med 2022; 2022:4674000. [PMID: 36518854 PMCID: PMC9744609 DOI: 10.1155/2022/4674000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 11/05/2022] [Accepted: 11/12/2022] [Indexed: 12/01/2023]
Abstract
METHOD This meta-analysis aims to evaluate the effectiveness of probiotics in reducing inflammatory biomarkers and the length of intensive care unit (ICU) stays. PubMed-Medline, SCOPUS, Embase, and Google Scholar databases up to July 2021 were searched. The meta-analysis was carried out using random-effect analysis. To determine the sources of heterogeneity, subgroup analyses were performed. In case of the presence of publication bias, trim and fill analysis was carried out. The Cochrane Collaboration tool was used for checking the quality assessment. We hypothesized that probiotics would improve inflammatory markers (CRP and IL-6) and the length of ICU stay in traumatic brain injury and multiple trauma patients. RESULTS The present meta-analysis, which includes a total of seven studies, showed that there were no significant effects of probiotics supplementation on interleukin (IL)-6 (Hedges's g = -2.46 pg/ml; 95% CI: -12.16, 7.25; P=0.39), C-reactive protein (CRP) (Hedges's g = -1.10 mg/L; 95% CI: -2.27, 0.06; P=0.06), and the length of staying in ICU. The overall number of RCTs included in the analysis and the total sample size were insufficient to make firm conclusions. CONCLUSION As a result, more carefully designed RCTs are needed to investigate the effect of probiotics on inflammatory biomarkers and the length of ICU stay in traumatic brain injuries and multiple trauma patients in greater detail.
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Affiliation(s)
- Nooshin Noshadi
- Department of Clinical Nutrition, Faculty of Nutrition & Food Sciences, Tabriz University of Medical Science, Tabriz, Iran
| | - Marzieh Heidari
- Department of Clinical Nutrition, Faculty of Nutrition & Food Sciences, Tabriz University of Medical Science, Tabriz, Iran
| | - Mohammad Naemi Kermanshahi
- Department of Clinical Nutrition, Faculty of Nutrition & Food Sciences, Tabriz University of Medical Science, Tabriz, Iran
| | - Meysam Zarezadeh
- Department of Clinical Nutrition, Faculty of Nutrition & Food Sciences, Tabriz University of Medical Science, Tabriz, Iran
| | - Sarvin Sanaie
- Research Center for Integrative Medicine in Aging, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehrangiz Ebrahimi-Mameghani
- Nutrition Research Center, Department of Biochemistry and Diet Therapy, Faculty of Nutrition & Food Sciences, Tabriz University of Medical Science, Tabriz, Iran
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