Reduced memory B cells in patients with hyper IgE syndrome

Title in English	Reduced memory B cells in patients with hyper IgE syndromeClin Immunol
Authors	SPECKMANN C. ENDERS A. WOELLNER C. THIEL D. RENSING-EHL A. SCHLESIER M. ROHR J. JAKOB T. OSWALD E. KOPP M.V. SANAL O. LITZMAN Jiří PLEBANI A. PIETROGRANDE M.C. FRANCO J.L. ESPANOL T. GRIMBACHER B. EHL S.
Year of publication	2008
Type	Article in Periodical
Magazine / Source	Clin Immunol
MU Faculty or unit	Faculty of Medicine
Citation
Field	Immunology
Keywords	Hyper IgE syndrome; B cells; STAT-3; Memory cells
Description	Dominant-negative mutations in STAT-3 have recently been found in the majority of patients with sporadic or autosomal-dominant hyper IgE syndrome (HIES). Since STAT-3 plays a role in B cell development and differentiation, we analyzed memory B cells in 20 patients with HIES, 17 of which had STAT-3 mutations. All but four patients had reduced non-switched and/or class-switched memory B cells. No reduction in these B cell populations was found in 16 atopic dermatitis patients with IgE levels above 1000 KU/L. There was no correlation between the reduction of memory B cells and the ability to produce specific antibodies. Moreover, there was no correlation between the percentage of memory B cells and the infection history. Analysis of memory B cells can be useful in distinguishing patients with suspected HIES from patients with atopic disease, but probably fails to identify patients who are at high risk of infection.