Matches in SemOpenAlex for { <https://semopenalex.org/work/W2943250306> ?p ?o ?g. }
- W2943250306 abstract "Abstract Prior exposure to a single serotype of dengue virus (DENV) predisposes individuals to severe disease upon secondary heterologous DENV infection. Here we show that the length of time between DENV/Zika (ZIKV) infections has a qualitative impact on controlling ZIKV replication. We identified limited but significant differences in the magnitude of the early humoral immune response associated with a period of twelve months but not three months of DENV convalescence. However, their role limiting ZIKV replication is not conclusive. There was no evidence of in vivo antibody-dependent amplification of ZIKV by DENV immunity in any group. We are also showing that the significant differences among groups may be linked to a pre-existing polyfunctional CD4+ T cells response (increased IFN-g and Cd107a before ZIKV infection) and to an early and continuous expansion of the CD4+ effector memory cells early on after ZIKV infection. Those significant differences were associated with a period of 12 months after DENV infection that were not observed in a span of 3-months. These results suggest that there is a window of optimal cross-protection between ZIKV and DENV with significant consequences. These results have pivotal implications while interpreting ZIKV pathogenesis in flavivirus-experimented populations, diagnostic results interpretation and vaccine designs among others. Author Summary Since its introduction in the Americas region ZIKV virus has been associated to severe birth defects. One of the questions that remains open is the role of previous dengue or any other flavivirus immunity in the pathogenesis of ZIKV and more important, if the time elapse between DENV and ZIKV play a role enhancing ZIKV pathogenesis as it is the case for subsequent DENV infections. On this work, using NHP as a model we compared the effect of a period of 12 months vs. a period of 3 months of DENV immunity in the outcome of ZIKV infection. We found that previous DENV infection, at any of the tested period of time do not induce ZIKV enhancement. More relevant are showing that when the two infection occurs at least one year apart the preexisting DENV immunity is better at controlling ZIKV replication and that the role of the neutralizing antibodies is very limited. On the contrary our results suggest that early after ZIKV infection the cellular immune response, may plays a predominant role. Our findings have critical relevance to understand the dynamic interaction between these two flavivirus, their pathogenies, diagnosis and vaccine design." @default.
- W2943250306 created "2019-05-09" @default.
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- W2943250306 date "2019-05-02" @default.
- W2943250306 modified "2023-10-15" @default.
- W2943250306 title "Significant control of Zika infection in macaques depends on the elapsing time after dengue exposure" @default.
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- W2943250306 doi "https://doi.org/10.1101/625293" @default.
- W2943250306 hasPublicationYear "2019" @default.
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