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We aimed to investigate the role of MCs in severity of dengue.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We searched for relevant studies in 10 databases on 15 August 2016. Meta\u2010analysis (MA) was conducted by R version 3.5.0.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We included 24 studies. in vivo and in vitro studies showed higher MC products released from infected mice\/cells with dengue virus. In addition, when administering MC stabilizers or antihistaminic drugs, there was a decrease in vascular\/capillary permeability. In human and at early stages, studies revealed an insignificant difference in VEGF levels in dengue fever (DF) versus dengue hemorrhagic fever (DHF) (standardized mean difference [SMD] 0.145; 95% confidence interval [CI], \u22120.348\u20100.638). Meanwhile, at acute stages and compared with healthy controls, high heterogeneity with an inconclusive difference in VEGF levels were noted in DF and DHF. However, pooled serum and plasma levels of VEGF were increased significantly in dengue shock syndrome (DSS) versus healthy controls (SMD 0.65; 95% CI, 0.3\u20100.95). There were also significantly higher chymase levels in DHF patients compared with DF during the acute phase (MD \u22126.531; 95% CI, \u221212.2 to \u22120.9).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>VEGF and chymase levels are mediators in dengue pathogenesis. However, limited data were available to support their role in severe dengue cases. Further studies are needed to evaluate the function of other mediators in dengue severity.<\/jats:p><\/jats:sec>","DOI":"10.1002\/rmv.2084","type":"journal-article","created":{"date-parts":[[2019,11,11]],"date-time":"2019-11-11T06:19:38Z","timestamp":1573453178000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Mast cell mediators in relation to dengue severity: A systematic review and meta\u2010analysis"],"prefix":"10.1002","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1312-307X","authenticated-orcid":false,"given":"Nourin Ali","family":"Sherif","sequence":"first","affiliation":[{"name":"Faculty of Medicine Mansoura University  Mansoura Egypt"},{"name":"Online research Club (http:\/\/www.onlineresearchclub.org\/)  Nagasaki Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2581-0459","authenticated-orcid":false,"given":"Ahmad 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