B Cell Sub-types Following Acute Malaria and Associations with Clinical Immunity
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Background: Repeated exposure to Plasmodium falciparum is associated with perturbations in B cell sub-set homeostasis, including expansion atypical memory B cells. However, B cell perturbations immediately following acute malaria infection have been poorly characterized, especially with regard to their relationship with immunity to malaria.
Methods: To better understand the kinetics of B cell sub-sets following malaria, the proportions of six B cell sub-sets were assessed at five time points following acute malaria in four to 5 years old children living in a high transmission region of Uganda. B cell sub-set kinetics were compared with measures of clinical immunity to malaria-lower parasite density at the time of malaria diagnosis and recent asymptomatic parasitaemia.
Results: Atypical memory B cell and transitional B cell proportions increased following malaria. In contrast, plasmablast proportions were highest at the time of malaria diagnosis and rapidly declined following treatment. Increased proportions of atypical memory B cells were associated with greater immunity to malaria, whereas increased proportions of transitional B cells were associated with evidence of less immunity to malaria.
Conclusions: These findings highlight the dynamic changes in multiple B cell sub-sets following acute, uncomplicated malaria, and how these sub-sets are associated with developing immunity to malaria.
Partey F, Dowuona J, Pobee A, Walker M, Aculley B, Prah D Sci Rep. 2024; 14(1):4888.
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Dooley N, Chabikwa T, Pava Z, Loughland J, Hamelink J, Berry K Nat Commun. 2023; 14(1):7387.
PMID: 37968278 PMC: 10651914. DOI: 10.1038/s41467-023-43181-7.
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Kalkal M, Das J Front Microbiol. 2023; 14:1046002.
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Kalkal M, Chauhan R, Sharan Thakur R, Tiwari M, Pande V, Das J Biology (Basel). 2022; 11(5).
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Kerkman P, Dernstedt A, Tadala L, Mittler E, Dannborg M, Sundling C Clin Transl Immunology. 2021; 10(7):e1313.
PMID: 34277007 PMC: 8275445. DOI: 10.1002/cti2.1313.