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- W2893541815 abstract "L-arginine (L-Arg), the precursor of nitric oxide (NO), plays multiple, important roles in nutrient metabolism and immune regulation. Hypoargininemia is one of the distinctive features of malaria patients in endemic areas. To understand the immunoregulatory function of L-Arg in malaria, we investigated the effects of L-Arg, pre- or/and post-treatment, on the cellular/humoral immune response during Plasmodium yoelii 17XL (P.y17XL) infection in DBA/2 mice. Populations of splenic CD4+T-bet+IFN-γ+ T cells (Th1), F4/80+ macrophages, CD4+GATA-3+IL-4+ T cells (Th2), B220+CD138+ plasmacytes and antibody-producing cells (IgG+/IgG1+-plasma cells) were assessed by flow cytometry. Pro-inflammatory cytokines and antibodies (IgG and IgG1) were quantified by immunoassays. We found that treatment with L-Arg significantly decreased parasitemia and shortened disease duration. Prophylactic treatment with L-Arg promotes an enhanced Th1 cell response during the early stages of P.y17XL infection, and treatment with L-Arg in the course of infection facilitates the later humoral immune response. Our findings suggest that treatment with L-Arg may decrease parasite burden and control the host's susceptibility to parasite synchronously by regulating host immune responses against P.y17XL, producing better outcomes for malaria infection. This implies that the supplementation of L-Arg may be a promising adjunctive therapy to reduce malaria-associated mortality in endemic areas." @default.
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- W2893541815 date "2018-12-01" @default.
- W2893541815 modified "2023-09-29" @default.
- W2893541815 title "Prophylactic treatment of L-Arg improves malaria outcomes by regulating host immune responses during Plasmodium yoelii 17XL infection" @default.
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- W2893541815 doi "https://doi.org/10.1016/j.exppara.2018.09.013" @default.
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