Alterations on Peripheral B Cell Subsets Following an Acute Uncomplicated Clinical Malaria Infection in Children
Overview
Authors
Affiliations
Background: The effects of Plasmodium falciparum on B-cell homeostasis have not been well characterized. This study investigated whether an episode of acute malaria in young children results in changes in the peripheral B cell phenotype.
Methods: Using flow-cytofluorimetric analysis, the B cell phenotypes found in the peripheral blood of children aged 2-5 years were characterized during an episode of acute uncomplicated clinical malaria and four weeks post-recovery and in healthy age-matched controls.
Results: There was a significant decrease in CD19+ B lymphocytes during acute malaria. Characterization of the CD19+ B cell subsets in the peripheral blood based on expression of IgD and CD38 revealed a significant decrease in the numbers of naive 1 CD38-IgD+ B cells while there was an increase in CD38+IgD- memory 3 B cells during acute malaria. Further analysis of the peripheral B cell phenotype also identified an expansion of transitional CD10+CD19+ B cells in children following an episode of acute malaria with up to 25% of total CD19+ B cell pool residing in this subset.
Conclusion: Children experiencing an episode of acute uncomplicated clinical malaria experienced profound disturbances in B cell homeostasis.
Chaye M, van Hengel O, Voskamp A, Ozir-Fazalalikhan A, Konig M, Stam K Clin Exp Immunol. 2024; 219(1).
PMID: 39129562 PMC: 11771192. DOI: 10.1093/cei/uxae074.
Ngulube P Infect Drug Resist. 2023; 16:2147-2157.
PMID: 37077252 PMC: 10106824. DOI: 10.2147/IDR.S401247.
Current understanding of the immune potential of B-cell subsets in malarial pathogenesis.
Kalkal M, Das J Front Microbiol. 2023; 14:1046002.
PMID: 36778886 PMC: 9909418. DOI: 10.3389/fmicb.2023.1046002.
IL-10 Producing Regulatory B Cells Mediated Protection against Murine Malaria Pathogenesis.
Kalkal M, Chauhan R, Sharan Thakur R, Tiwari M, Pande V, Das J Biology (Basel). 2022; 11(5).
PMID: 35625397 PMC: 9138363. DOI: 10.3390/biology11050669.
Mortazavi S, Lugaajju A, Kaddumukasa M, Tijani M, Kironde F, Persson K BMC Microbiol. 2021; 21(1):307.
PMID: 34742229 PMC: 8571855. DOI: 10.1186/s12866-021-02368-y.