title: Circulating regulatory B cell subsets in patients with neuromyelitis optica spectrum disorders.
abstract: This study analyzed the populations of three different subsets of regulatory B cells (Bregs) in the peripheral blood mononuclear cells (PBMCs) of patients with neuromyelitis optica spectrum disorders (NMOSDs) and explored the relationship between the changes in these subsets of Bregs and the severity of NMOSD. A total of 22 patients with relapsed NMOSDs before treatment were recruited in our study, along with 20 age and gender-matched healthy controls, from May 2015 to March 2016. The percentages and numbers for three different subsets of Bregs including the CD19+CD24hiCD38hi, CD19+CD24hiCD27+, and CD19+CD5+CD1dhipopulations were evaluated in parallel by flow cytometry. Afterwards, correlations between the change of three different subsets of Bregs and disease severity were analyzed. We found significantly lower percentages of CD19+CD24hiCD38hiand CD19+CD5+CD1dhiBregs in NMOSDs patients than in healthy individuals. In contrast, the CD19+CD24hiCD27+Bregs population was significantly higher in NMOSDs patients than in healthy individuals. However, the three different Bregs subsets showed no significant correlation with expanded disability status scale (EDSS) or annualized relapse rate (ARR). Our findings suggest that the subsets of Bregs may play complex roles in the pathogenesis of NMOSDs and are not correlated with clinical disease severity. Further insights into the potential role of subsets of Bregs could increase our basic knowledge of NMOSDs pathogenesis.
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
authors.forename: Jinming
authors.initials: J
authors.lastname: Han
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
authors.forename: Li
authors.initials: L
authors.lastname: Sun
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
authors.forename: Zhongkun
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
authors.forename: Xueli
authors.initials: X
authors.lastname: Fan
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
authors.forename: Lifang
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
authors.forename: Yang-Yang
authors.initials: YY
authors.lastname: Song
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.|Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Department of Neurology and Neuroscience Center, the First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China. drtao.jin@hotmail.com.
authors.forename: Tao
authors.identifier: http://orcid.org/0000-0002-6084-3275
authors.initials: T
authors.lastname: Jin
mesh_terms: D000328:Adult; D000368:Aged; D015703:Antigens, CD / Q000276:immunology*; D060151:B-Lymphocytes, Regulatory / Q000276:immunology*; D005260:Female; D005434:Flow Cytometry / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D009471:Neuromyelitis Optica / Q000175:diagnosis / Q000276:immunology* / Q000473:pathology
chemical_list: D015703:Antigens, CD
keywords: Flow cytometry; Neuromyelitis optica spectrum disorders (NMOSDs); Regulatory B cells (Bregs)