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Mycobacterium tuberculosis infection is associated with increased B cell responses to unrelated pathogens.

Abstract：

:Antigens from Mycobacterium tuberculosis (M.tb), have been shown to stimulate human B cell responses to unrelated recall antigens in vitro. However, it is not known whether natural M.tb infection or whether vaccination with, Mycobacterium bovis BCG, has a similar effect. This study investigated the effects of M.tb infection and BCG vaccination on B cell responses to heterologous pathogen recall antigens. Antibodies against several bacterial and viral pathogens were quantified by ELISA in 68 uninfected controls, 62 individuals with latent TB infection (LTBI) and 107 active pulmonary TB (APTB) cases, and 24 recently BCG-vaccinated adolescents and naive controls. Antibody avidity was investigated using surface plasmon resonance and B cell ELISPOTs were used to measure plasmablast and memory B cell responses (MBC) in APTB cases and healthy donor controls. APTB was associated with higher levels of antibodies to respiratory syncytial virus and measles virus, compared to uninfected controls. BCG vaccination did not alter levels of antibodies against heterologous pathogens. Tetanus toxoid (TT)-specific antibody avidity was increased in APTB cases in comparison to uninfected individuals and the ratio of TT-specific plasmablasts to MBCs in the APTB cases was 7:1. M.tb infection is associated with increased antibody responses to heterologous pathogens in human subjects.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Kimuda SG,Andia-Biraro I,Sebina I,Egesa M,Nalwoga A,Smith SG,Bagaya BS,Levin J,Elliott AM,Raynes JG,Cose S

doi

10.1038/s41598-020-71044-4

subject

Has Abstract

pub_date

2020-08-31 00:00:00

pages

14324

issue

1

issn

2045-2322

pii

10.1038/s41598-020-71044-4

journal_volume

10

pub_type

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