11
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Efficacy of coenzyme Q10 in patients with chronic kidney disease: protocol for a systematic review

      protocol

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Introduction

          Coenzyme Q10 (CoQ10) is a fat-soluble vitamin-like quinone that exerts antioxidative functions and is also an important factor in mitochondrial metabolism. Plasma concentrations of CoQ10 are depressed in patients with chronic kidney disease (CKD). CoQ10 supplement can reduce adverse cardiovascular events, improve mitochondrial function and decrease oxidative stress in patients with non-dialysis CKD and dialysis CKD. We performed this study as a systematic review to comprehensively assess the effect of CoQ10 supplement on patients with CKD.

          Methods and analysis

          The present systematic review protocol is reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analysis Protocols guidelines. The MEDLINE, EMBASE and Cochrane library databases will be searched without language restrictions in December 2018. Two reviewers will independently screen the references in two stages: screening of the title/abstract and then of the full-text, to identify references meeting the inclusion criteria. A descriptive overview and tabular and/or graphical summaries will be generated, and directed content analysis will be carried out on the extracted data.

          Ethics and dissemination

          This systematic review will evaluate the efficacy and safety of CoQ10 in patients with CKD. Ethical approval is not required for this study. The results of this systematic review will be presented in relevant conferences and published in a peer-review journal.

          PROSPERO registration number

          CRD42019120201

          Related collections

          Most cited references11

          • Record: found
          • Abstract: found
          • Article: found
          Is Open Access

          Inclusion of zero total event trials in meta-analyses maintains analytic consistency and incorporates all available data

          Background Meta-analysis handles randomized trials with no outcome events in both treatment and control arms inconsistently, including them when risk difference (RD) is the effect measure but excluding them when relative risk (RR) or odds ratio (OR) are used. This study examined the influence of such trials on pooled treatment effects. Methods Analysis with and without zero total event trials of three illustrative published meta-analyses with a range of proportions of zero total event trials, treatment effects, and heterogeneity using inverse variance weighting and random effects that incorporates between-study heterogeneity. Results Including zero total event trials in meta-analyses moves the pooled estimate of treatment effect closer to nil, decreases its confidence interval and decreases between-study heterogeneity. For RR and OR, inclusion of such trials causes small changes, even when they comprise the large majority of included trials. For RD, the changes are more substantial, and in extreme cases can eliminate a statistically significant effect estimate. Conclusion To include all relevant data regardless of effect measure chosen, reviewers should also include zero total event trials when calculating pooled estimates using OR and RR.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Oxidative stress – chronic kidney disease – cardiovascular disease: A vicious circle

              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Effect of Coenzyme Q10on Biomarkers of Oxidative Stress and Cardiac Function in Hemodialysis Patients: The CoQ10Biomarker Trial.

              Oxidative stress is highly prevalent in patients with end-stage renal disease and is linked to excess cardiovascular risk. Identifying therapies that reduce oxidative stress has the potential to improve cardiovascular outcomes in patients undergoing maintenance dialysis.
                Bookmark

                Author and article information

                Journal
                BMJ Open
                BMJ Open
                bmjopen
                bmjopen
                BMJ Open
                BMJ Publishing Group (BMA House, Tavistock Square, London, WC1H 9JR )
                2044-6055
                2019
                14 May 2019
                : 9
                : 5
                : e029053
                Affiliations
                [1] The 306th Hospital of Chinese PLA , Beijing, China
                Author notes
                [Correspondence to ] Dr Jianjun Gao; gao306kidney@ 123456126.com
                Author information
                http://orcid.org/0000-0001-9675-3071
                Article
                bmjopen-2019-029053
                10.1136/bmjopen-2019-029053
                6530451
                31092669
                91cac3d5-d8aa-420a-9c14-968a3660e693
                © Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

                This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

                History
                : 10 January 2019
                : 19 April 2019
                : 24 April 2019
                Categories
                Pharmacology and Therapeutics
                Protocol
                1506
                1723
                Custom metadata
                unlocked

                Medicine
                coenzyme q10,chronic kidney disease,cardiovascular,oxidative stress,inflammation,glucose metabolism,lipid profiles

                Comments

                Comment on this article