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Neutralization. However, in heterotypic dengue virus infections the antibodies are non-neutralizing and lead to enhancement. Two cell lines expressing either FcRIA or FcRIIA have been used to demonstrate that immune complexes can enhance virus infectivity in an FcR mediated fashion. FcRIA is found exclusively on macrophages and dendritic cells and preferentially binds monomeric IgG, while FcRIIA i
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Ls. Activation of effector T-cells and secretion of cytokines define a key development in course of disease associated with dengue virus infection. Four patient studies done in Vietnam[28], India[29], Cuba[30], and Brazil[31] all showed increases in INF, TNF, IL-10, IL-1, IL-6, IL-8, and MCP1 amongst a variety of other cytokines. In vitro studies, IFN, IL-6, TNF, and RANTES upregulation also have
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Anti-NS1 antibodies stimulating the release of IL-6, IL-8, and MCP-1 in an NFB-dependent manner. Correlated with antibody binding is the upregulation of ICAM1. ICAM1 upregulation can facilitate the adherence of PBMCs to the endothelium. Both NFB inhibitors and soluble NS1 to block the antiNS1 antibodies can able to block cytokine release in vitro[46]. Using ELISA flow cytometry, it can be shown th
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Ivation is greatly enhanced. When they added purified NS1 protein to normal or convalescent sera they found synonymous results with NS1 activating complement and complement activation being synergized by anti-dengue antibodies. While NS1 could clearly activate complement in the fluid phase it was unable activate complement when stably expressed on the surface of cells. However, when patient sample
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Anti-NS1 antibodies stimulating the release of IL-6, IL-8, and MCP-1 in an NFB-dependent manner. Correlated with antibody binding is the upregulation of ICAM1. ICAM1 upregulation can facilitate the adherence of PBMCs to the endothelium. Both NFB inhibitors and soluble NS1 to block the antiNS1 antibodies can able to block cytokine release in vitro[46]. Using ELISA flow cytometry, it can be shown th
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Are unaffected by the virus. There are yet questions unanswered and the virus continues to spread unabated. However these immune components are several key elements attractive targets for study that hopefully can advance the field of research.12.13. 14. 15. 16.Competing interestsThe author declares that they have no competing interests.Authors' informationsDavid Gentry Nielsen was born 27, Septemb
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Ntegrin) (CD209) on dendritic cells [17-19]. Dendritic cells are considered crucial to fighting viral infections because of their ability to acquire and display viral antigens that would otherwisePage 2 of(page number not for citation purposes)Virology Journal 2009, 6:http://www.virologyj.com/content/6/1/evade the immune system. Dendritic cells affect the dengue virus in two ways. Immature dendrit