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2017 ; 7
(1
): 11077
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Characterization of tonsillar IL10 secreting B cells and their role in the
pathophysiology of tonsillar hypertrophy
#MMPMID28894116
Sarmiento Varon L
; De Rosa J
; Machicote A
; Billordo LA
; Baz P
; Fernández PM
; Kaimen Maciel I
; Blanco A
; Arana EI
Sci Rep
2017[Sep]; 7
(1
): 11077
PMID28894116
show ga
The comprehension of unconventional immune functions of tonsillar B cells, their
role in tolerance induction and protective immune responses, is crucial to unveil
the dynamic interactions of the upper aero digestive tract with polymicrobial
commensal flora and pathogens, in health and disease. Here, we describe the
kinetics of IL10 intracellular expression and compare it with that of cytokines
known to be produced by tonsillar B cells. Additionally, we detected a relevant
proportion of IL17-expressing tonsillar B cells, which has not previously been
reported. We immunophenotyped tonsillar IL10-expressing B cells (B10) and
observed IL10 production in activated B cells at every developmental stage.
Finally, we identified a relationship between decreased B10 percentages,
increased proportion of the germinal centre (GC) population and hypertrophied
tonsils (HT). Our findings provide greater insight into the role of B10 in GC
reactions and characterized their involvement in the pathogenesis of tonsillar
dysfunction.