PMID- 25518708 OWN - NLM STAT- MEDLINE DCOM- 20160203 LR - 20150520 IS - 1607-842X (Electronic) IS - 0891-6934 (Linking) VI - 48 IP - 4 DP - 2015 Jun TI - B cells produce less IL-10, IL-6 and TNF-alpha in myasthenia gravis. PG - 201-7 LID - 10.3109/08916934.2014.992517 [doi] AB - B cells from myasthenia gravis (MG) patients with autoantibodies (Aab) against acetylcholine receptor (AChR), muscle-specific kinase (MuSK) or with no detectable Aab were investigated as cytokine producing cells in this study. B cells were evaluated for memory phenotypes and expressions of IL-10, IL-6 and IL-12A. Induced productions of IL-10, IL-6, IL-12p40, TNF-alpha and LT from isolated B cells in vitro were measured by immunoassays. MG patients receiving immunosuppressive treatment had higher proportions of memory B cells compared with healthy controls and untreated patients. With CD40 stimulation MG patients produced significantly lower levels of IL-10, IL-6. With CD40 and B cell receptor stimulation of B cells, TNF-alpha production also decreased in addition to these cytokines. The lower levels of these cytokine productions were not related to treatment. Our results confirm a disturbance of B cell subpopulations in MG subgroups on immunosuppressive treatment. B cell derived IL-10, IL-6 and TNF-alpha are down-regulated in MG, irrespective of different antibody productions. Ineffective cytokine production by B cells may be a susceptibility factor in dysregulation of autoimmune Aab production. FAU - Yilmaz, Vuslat AU - Yilmaz V AD - Department of Physiology , and. FAU - Oflazer, Piraye AU - Oflazer P FAU - Aysal, Fikret AU - Aysal F FAU - Parman, Yesim G AU - Parman YG FAU - Direskeneli, Haner AU - Direskeneli H FAU - Deymeer, Feza AU - Deymeer F FAU - Saruhan-Direskeneli, Guher AU - Saruhan-Direskeneli G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141218 PL - England TA - Autoimmunity JT - Autoimmunity JID - 8900070 RN - 0 (Autoantibodies) RN - 0 (Cytokines) RN - 0 (Immunosuppressive Agents) RN - 0 (Interleukin-6) RN - 0 (Receptors, Cholinergic) RN - 0 (Tumor Necrosis Factor-alpha) RN - 130068-27-8 (Interleukin-10) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Autoantibodies/immunology MH - B-Lymphocytes/*immunology/*metabolism MH - Child MH - Cytokines/biosynthesis/genetics MH - Female MH - Gene Expression MH - Humans MH - Immunophenotyping MH - Immunosuppressive Agents/therapeutic use MH - Interleukin-10/*biosynthesis/genetics MH - Interleukin-6/*biosynthesis/genetics MH - Lymphocyte Count MH - Male MH - Middle Aged MH - Myasthenia Gravis/diagnosis/genetics/*immunology/*metabolism/therapy MH - Phenotype MH - Receptors, Cholinergic/immunology MH - Tumor Necrosis Factor-alpha/*biosynthesis/genetics MH - Young Adult OTO - NOTNLM OT - Autoantibody OT - B cell OT - cytokine OT - myasthenia gravis EDAT- 2014/12/19 06:00 MHDA- 2016/02/04 06:00 CRDT- 2014/12/19 06:00 PHST- 2014/12/19 06:00 [entrez] PHST- 2014/12/19 06:00 [pubmed] PHST- 2016/02/04 06:00 [medline] AID - 10.3109/08916934.2014.992517 [doi] PST - ppublish SO - Autoimmunity. 2015 Jun;48(4):201-7. doi: 10.3109/08916934.2014.992517. Epub 2014 Dec 18.