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Dengue is an acute viral infection transmitted by the bite of the mosquito belonging to the genus Aedes , which produce until 100 millions of infections worldwide per year. A high proportion of infected individuals develop an asyntomatic infection. Nevertheless, among patients that develop a clinical disease, 95 % of them show clinical signs and symptoms similar to common virosis, that in the most of the cases can recover by themselves (dengue with and without alarm signs); the remaining 5 % can evolve to severe manifestations, characterized for hemorrhages, organic damage, hypovolemic shock and death (severe dengue). Monocytes are one of the main targets of the infection by dengue virus (DENV), supporting the viral replication, contributing to the production of high levels of cytokine and the damage of different tissues and organs in response to the infection. Monocytes are divided in 3 subsets: classical (CD14++CD16-), non-classical (CD14+CD16++) and intermediate (CD14++CD16+); which have differential functional responses in the inflammatory process, regarding the production of inflammatory mediators and the interaction with the endothelium. The non-classic monocytes seem to be the main producers of inflammatory mediators such as TNF-α and IL-1β in response to DENV infection. Therefore, it is proposed that each monocyte subset may have a different role in the disease immunopathology. This review collect the main evidence regarding the viral replication and the immunopathology of dengue, also it shows the most important findings about the role of monocytes in this infection and proposes a potential differential involvement of monocytes subsets.

Inmunopatología del dengue: importancia y participación de los monocitos y sus subpoblaciones