scholarly journals Protocol for a preclinical systematic review and meta-analysis of pharmacological targeting of peroxisome proliferator-activated receptors in experimental renal injury

2021 ◽  
Vol 5 (1) ◽  
pp. e100240
Author(s):  
William P Martin ◽  
Yeong H D Chuah ◽  
Emer Conroy ◽  
Alison L Reynolds ◽  
Conor Judge ◽  
...  

IntroductionImpaired lipid metabolism in the renal tubule plays a prominent role in the progression of renal fibrosis following acute kidney injury (AKI) and in chronic kidney disease (CKD). Peroxisome proliferator-activated receptors (PPARs) are promising druggable targets to mitigate renal fibrosis by redirecting metabolism, including restoration of fatty acid oxidation (FAO) capacity. We aim to synthesise evidence from preclinical studies of pharmacological PPAR targeting in experimental renal injury, and inform the design of future studies evaluating PPAR-mediated restoration of FAO in AKI and CKD.Methods and analysisStudies reporting on the impact of pharmacological PPAR modulation in animal models of renal injury will be collected from MEDLINE (Ovid), Embase and Web of Science databases. Predefined eligibility criteria will exclude studies testing medications which are not specific ligands of one or more PPARs and studies involving multimodal pharmacological treatment. The Systematic Review Centre for Laboratory Animal Experimentation risk of bias tool and Collaborative Approach to Meta-Analysis and Review of Animal Experimental Studies checklist will be used to assess quality of the included studies. Data extraction will be followed by a narrative synthesis of the data and meta-analysis where feasible. Analysis will be performed separately for AKI, CKD and renal transplant models. Subgroup analyses will be performed based on study design characteristics, PPAR isotype(s) targeted, and classes of PPAR-targeting medications used. Risk of publication bias will be assessed using funnel plotting, Egger’s regression and trim-and-fill analysis.Ethics and disseminationEthical approval is not required. Findings will be published in a peer-reviewed journal and presented at scientific meetings.PROSPERO registration numberCRD42021265550.

2019 ◽  
Vol 26 (3) ◽  
pp. 910-920 ◽  
Author(s):  
Sani Abubakar Saddiq ◽  
Abu Sufian Abu Bakar

Purpose The purpose of the study is to investigate the impact of economic and financial crimes on the economies of emerging and developing countries. Design/methodology/approach Preferred Reporting Items for Systematic review and Meta-Analysis (PRISMA) guidelines and meta-analysis of economics research reporting guidelines were used to conduct a quantitative synthesis of empirical evidence on the impact of economic and financial crimes in developing and emerging countries. Findings A total of 103 studies were searched, out of which 6 met the selection/eligibility criteria of this systematic review. The six selected studies indicated that economic and financial crimes have a negative impact in emerging and developing countries. Originality/value To the best knowledge of the authors, no published systematic review of the impact of economic and financial crimes in developing countries has been conducted to date.


2015 ◽  
Vol 117 (suppl_1) ◽  
Author(s):  
Sue-Jie Koo ◽  
Nisha J Garg

Chagas heart disease is an inflammatory cardiomyopathy which presents with mononuclear infiltrates in the interstitium and myocardial fibrosis in the chronic phase. Incomplete clearance by macrophages of the etiologic agent, Trypanosoma cruzi , is a significant cause of chronic disease development in approximately 30% of those serologically positive for the blood-borne parasite. The differential metabolic status, anaerobic glycolysis and mitochondria-dependent oxidative phosphorylation, are respectively associated with pro-inflammatory (M1) and anti-inflammatory (M2) functional activation of macrophages. Reactive oxygen species (ROS) have been shown to be an intracellular signal for glycolysis while peroxisome proliferator-activated receptors (PPARs) that enhance fatty acid oxidation provide transcription control of macrophage functional state. In our studies using diverse T. cruzi isolates, we showed that SylvioX10 (virulent), but not TCC (non-virulent), isolates are able to differentially control extracellular and intracellular ROS levels in macrophages. We found in macrophages infected with SylvioX10, the nuclear expression of PPAR-α was increased by 18 hours post-infection, and mitochondrial metabolic activity was similar to that of not-infected and M2 controls; which indicates anti-inflammatory function of macrophages, and therefore prohibiting T. cruzi clearance. In our ongoing studies, we are examining the impact of PPAR-α inhibitors in modulating the metabolic gene expression profile, functional phenotype and parasite survival in macrophages. Our data will provide the first indication that host macrophages have deficient pro-inflammatory capacity due to sub-optimal glucose oxidation, and enhancing the metabolism that supports T. cruzi clearance will provide a valuable basis for a strategy to arrest Chagas disease progression.


BMJ Open ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. e031598 ◽  
Author(s):  
Clare Meernik ◽  
Hannah M Baker ◽  
Sarah D Kowitt ◽  
Leah M Ranney ◽  
Adam O Goldstein

ObjectivesGiven the exponential increase in the use of e-cigarettes among younger age groups and in the growth in research on e-cigarette flavours, we conducted a systematic review examining the impact of non-menthol flavoured e-cigarettes on e-cigarette perceptions and use among youth and adults.DesignPubMed, Embase, PyscINFO and CINAHL were systematically searched for studies published and indexed through March 2018.Eligibility criteriaQuantitative observational and experimental studies that assessed the effect of non-menthol flavours in e-cigarettes on perceptions and use behaviours were included. Specific outcome measures assessed are appeal, reasons for use, risk perceptions, susceptibility, intention to try, initiation, preference, current use, quit intentions and cessation.Data extraction and synthesisThree authors independently extracted data related to the impact of flavours in tobacco products. Data from a previous review were then combined with those from the updated review for final analysis. Results were then grouped and analysed by outcome measure.ResultsThe review included 51 articles for synthesis, including 17 published up to 2016 and an additional 34 published between 2016 and 2018. Results indicate that non-menthol flavours in e-cigarettes decrease harm perceptions (five studies) and increase willingness to try and initiation of e-cigarettes (six studies). Among adults, e-cigarette flavours increase product appeal (seven studies) and are a primary reason many adults use the product (five studies). The role of flavoured e-cigarettes on smoking cessation remains unclear (six studies).ConclusionThis review provides summary data on the role of non-menthol flavours in e-cigarette perceptions and use. Consistent evidence shows that flavours attract both youth and adults to use e-cigarettes. Given the clear findings that such flavours increase product appeal, willingness to try and initiation among youth, banning non-menthol flavours in e-cigarettes may reduce youth e-cigarette use. Longitudinal research is needed to examine any role flavours may play in quit behaviours among adults.


BMJ Open ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. e022499 ◽  
Author(s):  
Collins Zamawe ◽  
Carina King ◽  
Hannah Maria Jennings ◽  
Chrispin Mandiwa ◽  
Edward Fottrell

ObjectiveThe use of herbal medicines for induction of labour (IOL) is common globally and yet its effects are not well understood. We assessed the efficacy and safety of herbal medicines for IOL.DesignSystematic review and meta-analysis of published literature.Data sourcesWe searched in MEDLINE, AMED and CINAHL in April 2017, updated in June 2018.Eligibility criteriaWe considered experimental and non-experimental studies that compared relevant pregnancy outcomes between users and non-user of herbal medicines for IOL.Data extraction and synthesisData were extracted by two reviewers using a standardised form. A random-effects model was used to synthesise effects sizes and heterogeneity was explored through I2statistic. The risk of bias was assessed using ‘John Hopkins Nursing School Critical Appraisal Tool’ and ‘Cochrane Risk of Bias Tool’.ResultsA total of 1421 papers were identified through the searches, but only 10 were retained after eligibility and risk of bias assessments. The users of herbal medicine for IOL were significantly more likely to give birth within 24 hours than non-users (Risk Ratio (RR) 4.48; 95% CI 1.75 to 11.44). No significant difference in the incidence of caesarean section (RR 1.19; 95% CI 0.76 to 1.86), assisted vaginal delivery (RR 0.73; 95% CI 0.47 to 1.14), haemorrhage (RR 0.84; 95% CI 0.44 to 1.60), meconium-stained liquor (RR 1.20; 95% CI 0.65 to 2.23) and admission to nursery (RR 1.08; 95% CI 0.49 to 2.38) was found between users and non-users of herbal medicines for IOL.ConclusionsThe findings suggest that herbal medicines for IOL are effective, but there is inconclusive evidence of safety due to lack of good quality data. Thus, the use of herbal medicines for IOL should be avoided until safety issues are clarified. More studies are recommended to establish the safety of herbal medicines.


2022 ◽  
Vol 10 (1) ◽  
Author(s):  
Fatima Safi ◽  
Anna M. Aniserowicz ◽  
Heather Colquhoun ◽  
Jill Stier ◽  
Behdin Nowrouzi-Kia

Abstract Background Eating disorders (ED) can reduce quality of life by limiting participation and performance in social and occupational roles, including paid or unpaid work. The association between ED pathologies and work participation and performance must be well understood to strengthen vocational rehabilitation programmes and prevent occupational disruptions in the ED population. The aims of this study are: (1) to examine the degree of association between ED pathologies and work participation and performance in 15-year-olds and older; (2) to highlight the specific ED symptoms that are most correlated with changes in work performance and participation; (3) to compile the most common metrics and assessments used to measure work participation and performance with ED. Methods Medline, Embase, CINAHL, Web of Science, PsycINFO, and Cochrane Library will be searched for observational and experimental studies that meet the following criteria: (1) a clinical sample of typical or atypical ED; (2) paid or unpaid employment or training; (3) an association between ED pathologies and work participation or performance. Unpublished data will also be examined. Title and abstract, and full-text screening will be conducted in duplicate. Risk of bias and quality of evidence assessments will be completed. A random-effect meta-analysis will be performed. Discussion This synthesis can clarify knowledge and gaps around the impact of ED on work functioning, thereby allowing better evaluation, improvements and development of current workplace assessments, interventions, and policies. Trial registration The registration number for this systematic review on PROSPERO is CRD42021255055.


Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Mollie McDermott ◽  
Lesli E Skolarus ◽  
James F Burke

Introduction: Rates of tPA administration remain low nationally and globally despite its demonstrated efficacy. We performed a systematic review and meta-analysis of interventions to increase the rate of tPA administration. Methods: We searched PubMed and EMBASE to identify all studies (excluding case reports) published between 1995 and January 8, 2015 documenting interventions to increase the utilization of tPA. We screened each study with pre-specified inclusion and exclusion criteria. Design elements and study data were extracted from eligible studies. The principal summary measure was the percentage change in rate of tPA administration. Fixed and random effects meta-analytic models were built to summarize the effect of intervention compared to control as well as intervention subtypes. Results: Our search yielded 1457 results of which 25 met eligibility criteria. We identified 13 pre-post studies and 11 randomized or quasi-experimental studies. Included studies utilized EMS (n=14), telemedicine (n=6), and public education (n=5). Intervention settings included urban (n=13), rural (n=4), and combined (n=4). In a fixed effect model, tPA administration was significantly higher in the intervention arm across all studies that limited enrollment to ischemic stroke patients (n=14) with a risk ratio (RR) of 1.71. Interventions involving EMS were associated with an increased rate of tPA administration with a RR of 1.51, (95% CI: 1.43-1.59, p<0.0001); promoting public education RR = 2.62, (95% CI: 1.54-4.43, p<0.01); and utilizing telemedicine RR = 2.97, (95% CI: 2.61-3.39, p<0.0001). Conclusions: Interventions to increase tPA use appear to have considerable efficacy. Comparative inferences between intervention types are limited by small sample size and intervention heterogeneity.


Nutrients ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 2070 ◽  
Author(s):  
Fatma Ilgaz ◽  
Alex Pinto ◽  
Hülya Gökmen-Özel ◽  
Julio César Rocha ◽  
Esther van Dam ◽  
...  

There is an ongoing debate regarding the impact of phenylketonuria (PKU) and its treatment on growth. To date, evidence from studies is inconsistent, and data on the whole developmental period is limited. The primary aim of this systematic review was to investigate the effects of a phenylalanine (Phe)-restricted diet on long-term growth in patients with PKU. Four electronic databases were searched for articles published until September 2018. A total of 887 results were found, but only 13 articles met eligibility criteria. Only three studies had an adequate methodology for meta-analysis. Although the results indicate normal growth at birth and during infancy, children with PKU were significantly shorter and had lower weight for age than reference populations during the first four years of life. Impaired linear growth was observed until the end of adolescence in PKU. In contrast, growth impairment was not reported in patients with mild hyperphenylalaninemia, not requiring dietary restriction. Current evidence indicates that even with advances in dietary treatments, “optimal” growth outcomes are not attained in PKU. The majority of studies include children born before 1990s, so further research is needed to show the effects of recent dietary practices on growth in PKU.


BMJ Open ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. e023629 ◽  
Author(s):  
Briana Lees ◽  
Louise Mewton ◽  
Lexine Stapinski ◽  
Lindsay M Squeglia ◽  
Caroline Rae ◽  
...  

IntroductionBinge drinking is the most common pattern of alcohol use among young people in Western countries. Adolescence and young adulthood is a vulnerable developmental period and binge drinking during this time has a higher potential for neurotoxicity and interference with ongoing neural and cognitive development. The purpose of this systematic review will be to assess and integrate evidence of the impact of binge drinking on cognition, brain structure and function in youth aged 10–24 years. Cross-sectional studies will synthesise the aberrations associated with binge drinking, while longitudinal studies will distinguish the cognitive and neural antecedents from the cognitive and neural effects that are a consequence of binge drinking.Methods and analysisA total of five peer-reviewed databases (PubMed, EMBASE, Medline, PsychINFO, ProQuest) will be systematically searched and the search period will include all studies published prior to 1 April 2018. The search terms will be a combination of MeSH keywords that are based on previous relevant reviews. Study selection will follow the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and study quality will be assessed using The Grades of Recommendation, Assessment, Development and Evaluation approach. All studies will be screened against eligibility criteria designed to synthesise studies that examined a young binge drinking sample and used neuropsychological, neurophysiological or neuroimaging assessment techniques. Studies will be excluded if participants were significantly involved in other substances or if they had been clinically diagnosed with an alcohol use disorder, or any psychiatric, neurological or pharmacological condition. If available data permits, a meta-analysis will be conducted.Ethics and disseminationFormal ethics approval is not required as primary data will not be collected. The results will be disseminated through a peer-reviewed publication, conference presentations and social media.Trial registration numberInternational Prospective Register for Systematic Reviews (PROSPERO) number: CRD42018086856.


2021 ◽  
Author(s):  
Keely A. Shaw ◽  
Gordon A. Zello ◽  
Scotty J. Butcher ◽  
Jong Bum Ko ◽  
Leandy Bertrand ◽  
...  

AbstractFace masks are promoted for preventing spread of viruses; however, wearing a mask during exercise might increase CO2 rebreathing, decrease arterial oxygenation, and decrease exercise performance. A systematic review and meta-analysis was conducted on the impact of wearing a mask during exercise. Data sources included SPORTDiscus, PubMed, and Medline. Eligibility criteria included all study designs comparing surgical, N95, or cloth masks to a no mask condition during any type of exercise where exercise performance and/or physiological parameters were evaluated. Healthy and clinical participants were included. Mean differences (MD) or standardized mean differences (SMD) with 95% confidence intervals were calculated and pooled effects assessed. Twenty-two studies involving 1,573 participants (620 females, 953 males) were included. Surgical, or N95 masks did not impact exercise performance (SMD −0.05 [-0.16,0.07] and −0.16 [-0.54,0.22], respectively) but increased ratings of perceived exertion (RPE) (SMD 0.33 [0.09,0.58] and 0.61 [0.23,0.99]) and dyspnea (SMD 0.6 [0.3,0.9] for all masks). End-tidal CO2 (MD 3.3 [1.0, 5.6] and 3.7 [3.0,4.4] mmHg), and heart rate (MD 2 [0,4] beats/min with N95 masks) slightly increased. Face masks can be worn during exercise with no influences on performance and minimal impacts on physiological variables.PROSPERO RegistrationCRD42020224988Novelty PointsFace masks can be worn during exercise with no impacts on performance and minimal impacts on physiological variables.


2020 ◽  
Author(s):  
Zhuoni Xiao ◽  
Mina Murat Baldwin ◽  
Franziska Meinck ◽  
Ingrid Obsuth ◽  
Aja Louise Murray

Abstract Background: Research suggests that childhood psychological maltreatment (i.e., emotional abuse and emotional neglect) is associated with mental and physical health problems that persist into adulthood, for example anxiety, depression, post-traumatic stress disorder (PTSD), suicidal ideation, and aggression; however, a systematic review and meta-analysis of the existing literature would help clarify the magnitude and moderators of these associations, and the extent to which they may be affected by publication bias, as well as the methodological strengths and weakness of studies in this area.Method: Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guideline will be employed to structure the review. Several searches will be carried out via databases including Web of Science, Medline, PubMed, PsycINFO, Applied Social Science Index and Abstract, ERIC and EMBASE. Empirical peer reviewed research articles that fit pre-specified eligibility criteria will be included in the review. This review will include literature written in either English or Chinese. Two independent reviewers will screen and assess studies for inclusion in the review as well as extract the data, with consensus reached through discussion in cases of discrepancy. A third reviewer will be consulted to resolve any discrepancies that cannot be resolved through discussion between the original reviewers. The relevant Newcastle-Ottawa scales will be used for assessing the quality of studies. If a sufficient number of comparable studies are retrieved, a meta-analysis will be conducted using a random effects model. Discussion: This systematic review will provide an understanding of the long-term effects of childhood psychological maltreatment on adult mental health, which adds to previous reviews focusing primarily on the effects of physical and sexual abuse. The results of the review will help inform clinical practice in approaches to treating those with a history of psychological maltreatment in childhood. The gaps and weaknesses in the evidence identified will also inform recommendations for future research.


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