PMID- 27168952 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20160512 LR - 20200930 IS - 2164-7712 (Print) IS - 2164-7712 (Electronic) VI - 5 IP - 1 DP - 2016 TI - Analysis of subsets of B cells, Breg, CD4Treg and CD8Treg cells in adult patients with primary selective IgM deficiency. PG - 21-32 AB - Primary selective IgM deficiency (SIGMD) is a rare and recently IUIS-recognized primary immunodeficiency disease with increased susceptibility to infections, allergy, and autoimmune diseases. The pathogenesis of selective IgM remains unclear. The objective of the study was to understand the pathogenesis of selective IgM deficiency via a comprehensive analysis of subsets of B cells, naive and memory subsets of CD4+ and CD8+ T cells, and Breg, CD4Treg, and CD8Treg cells. Twenty adult patients with SIGMD (serum IgM 4 mg/dl-32 mg/dl) and age-and gender-matched healthy controls were studied. Naive B cells, transitional B cells, marginal zone B cells, germinal center B cells, IgM memory B cells, switched memory B cells, plasmablasts, CD21(low) B cells, B1 cells, CXCR3+ naive and memory B cells; naive, central memory, and effector memory subsets of CD4+ and CD8+ T cells, and CD4Treg, CD8Treg and Breg were phenotypically analyzed using multicolor flow cytometry. A significant increase in CD21(low), IgM memory B cells, Breg and CD8Treg, and a significant decreased in germinal center B cells, and CXCR3+ naive and memory B cells were observed in SIGMD. These alterations in subsets of B cells, and Breg and CD8Treg cells may play a role in the pathogenesis of SIGMD. FAU - Louis, Ankmalika Gupta AU - Louis AG AD - Program in Primary Immunodeficiency and Human Aging, Division of Basic and Clinical Immunology, University of California Irvine, California, USA. FAU - Agrawal, Sudhanshu AU - Agrawal S AD - Program in Primary Immunodeficiency and Human Aging, Division of Basic and Clinical Immunology, University of California Irvine, California, USA. FAU - Gupta, Sudhir AU - Gupta S AD - Program in Primary Immunodeficiency and Human Aging, Division of Basic and Clinical Immunology, University of California Irvine, California, USA. LA - eng PT - Journal Article DEP - 20160323 PL - United States TA - Am J Clin Exp Immunol JT - American journal of clinical and experimental immunology JID - 101587157 PMC - PMC4858603 OTO - NOTNLM OT - B1 cells OT - Breg OT - CD21lo OT - CD4Treg OT - CD8Treg OT - CXCR3+ B cells OT - germinal center B cells OT - marginal zone B cells OT - memory B cells OT - memory T cells OT - transitional B cells EDAT- 2016/05/12 06:00 MHDA- 2016/05/12 06:01 PMCR- 2016/03/23 CRDT- 2016/05/12 06:00 PHST- 2016/01/11 00:00 [received] PHST- 2016/03/04 00:00 [accepted] PHST- 2016/05/12 06:00 [entrez] PHST- 2016/05/12 06:00 [pubmed] PHST- 2016/05/12 06:01 [medline] PHST- 2016/03/23 00:00 [pmc-release] PST - epublish SO - Am J Clin Exp Immunol. 2016 Mar 23;5(1):21-32. eCollection 2016.