کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6135868 | 1224907 | 2013 | 7 صفحه PDF | دانلود رایگان |

Immunity to malaria is widely believed to wane in the absence of reinfection, but direct evidence for the presence or absence of durable immunological memory to malaria is limited. Here, we characterized the profile of circulating naïve and memory (including central and effector) CD4+ T cells responses of individuals naturally infected by Plasmodium vivax. In the current study, we demonstrated that acute P. vivax infection induces a significant increase in the absolute number of both naïve and memory cells, which were responsible for the production of anti-inflammatory (IL-10) and pro-inflammatory (IFN-γ) cytokines. Finally, we described the profile of memory cell subtypes (TCM-CD45ROhighCCR7+ and TEM-CD45ROhighCCR7â), as well as the pattern of cell migration based on CD62L selectin expression, demonstrating that P. vivax-infected donors presented with a predominantly central memory cell profile. Our results indicate that the expansion of both naïve and memory T cells, responsible for the production of both pro-inflammatory and regulatory cytokines, which might also contribute to the modulation of immune responses during P. vivax infection.
Journal: Microbes and Infection - Volume 15, Issue 12, November 2013, Pages 837-843