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autoantibodies

Atypical memory B-cells and autoantibodies correlate with anemia during Plasmodium vivax complicated infections

July 21, 2020 - 15:15 -- Open Access
Author(s): 
Rivera-Correa J, Yasnot-Acosta MF, Tovar NC, Velasco-Pareja MC, Easton A, Rodriguez A
Reference: 
PLoS Negl Trop Dis 14(7): e0008466

Malaria caused by Plasmodium vivax is a highly prevalent infection world-wide, that was previously considered mild, but complications such as anemia have been highly reported in the past years. In mice models of malaria, anti-phosphatidylserine (anti-PS) autoantibodies, produced by atypical B-cells, bind to uninfected erythrocytes and contribute to anemia. In human patients with P. falciparum malaria, the levels of anti-PS, atypical B-cells and anemia are strongly correlated to each other.

NOT Open Access | Effects of IgG and IgM autoantibodies on non-infected erythrocytes is related to ABO blood group in Plasmodium vivax malaria and is associated with anemia

March 2, 2020 - 15:27 -- NOT Open Access
Author(s): 
Mourão LC, Medeiros CMP, Braga ÉM, et al.
Reference: 
Microbes Infect. 2020 Feb 22. pii: S1286-4579(20)30031-9

Autoantibodies play an important role in the destruction of non-infected red blood cells (nRBCs) during malaria. However, the relationship between this clearance and ABO blood groups is yet to be fully enlightened, especially for Plasmodium vivax infections. Here we show that anti-RBC IgG and IgM are increased in anemic patients with acute vivax malaria.

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