Association between body fat distribution and B-lymphocyte subsets in peripheral blood.

Autor: Prechtl P; Epidemiology, Medical Faculty, University of Augsburg, Augsburg, Germany.; Institute for Medical Information Processing, Biometry and Epidemiology - IBE, LMU, Munich, Munich, Germany., Schmitz T; Epidemiology, Medical Faculty, University of Augsburg, Augsburg, Germany., Pochert N; Institute of Environmental Medicine, Helmholtz Munich, Munich, Germany.; Department of Obstetrics and Gynecology, University Hospital of Augsburg, Augsburg, Germany., Traidl-Hoffmann C; Institute of Environmental Medicine, Helmholtz Munich, Munich, Germany.; Environmental Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany., Linseisen J; Epidemiology, Medical Faculty, University of Augsburg, Augsburg, Germany.; Institute for Medical Information Processing, Biometry and Epidemiology - IBE, LMU, Munich, Munich, Germany., Meisinger C; Epidemiology, Medical Faculty, University of Augsburg, Augsburg, Germany., Freuer D; Epidemiology, Medical Faculty, University of Augsburg, Augsburg, Germany. dennis.freuer@med.uni-augsburg.de.
Jazyk: angličtina
Zdroj: Immunity & ageing : I & A [Immun Ageing] 2023 Sep 13; Vol. 20 (1), pp. 47. Date of Electronic Publication: 2023 Sep 13.
DOI: 10.1186/s12979-023-00372-6
Abstrakt: Background: Obesity is associated with chronic low-grade inflammation, which is underpinned by the presence of elevated levels of circulating proinflammatory cytokines in obese individuals. Due to the close relationship between adipose tissue and the immune system, it can be speculated that the accumulation of fat may influence the frequency and phenotype of lymphocyte populations. The aim of our study was to investigate whether body fat distribution is associated with B lymphocyte composition in peripheral blood. We examined the association between visceral (VAT) and total body fat (TBF) and the frequencies of B-cell subsets in 238 subjects over a period of up to one year using random intercept models. B lymphocyte subsets were determined by fluorescence-based flow cytometry.
Results: Inverse associations were found between body fat measurements and plasma blasts, memory B cells, and IgM - IgD - cells. VAT, but not TBF, was positively associated with naive CD19 cells. In our analyses, both VAT and TBF showed positive associations with IgD only B cells.
Conclusions: In conclusion, body fat accumulation seems to be associated with a lower proportion of antibody-secreting plasma blasts and memory cells and an increasing amount of partially anergic, naive CD19 cells.
(© 2023. BioMed Central Ltd., part of Springer Nature.)
Databáze: MEDLINE
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