title: [Correlation of Breg with CD4(+)T cells of peripheral blood in patients with CITP and its clinical significance].
abstract: This study was aimed to detect the level of the peripheral blood Breg and CD4(+) T cell subgroups in patients with chronic idiopathic thrombocytopenic purpura (CITP) before and after therapy, and to analyse the charge of related cytokines and their correlation, to explore their roles in the pathogenesis of CITP. A total of 35 CITP cases were taken as the research group and 35 healthy persons were served as the control group. The peripheral blood mononuclear cells (PBMNC) were separated, the percentages of Th1, Th17, Th22 and Breg cells were detected by flow cytometry before and after treatment of glucocorticoid, and the IFN-γ, IL-17, IL-22 and IL-10 levels from PBMNC culture supernatant also were determined by ELISA. The results showed that there was significant difference as compared with the healthy controls, the proportion of peripheral blood Th1, Th17, Th22 cell subgroups all increased in CITP patients before treatment with glucocorticoid, the regulatory B cells (Breg) ratio was reduced, the differences had statistical significance (P < 0.05), but the differences were no statistically significant after treatment with glucocorticoid (P > 0.05). The levels of IFN-γ, IL-17, IL-22 from culture supernatant all increased in CITP patients before treatment, the level of IL-10 was lower than that of the healthy control, the difference was statistically significant (P < 0.05), but the there were no statistically significant differences after treatment (P > 0.05). There were positive correlation between the Breg cells and IL-10 expression in CITP patients (P < 0.05), the Breg cells and Th1, Th17, Th22 cells showed a negative correlation, IL-10 and IFN-γ, IL-17, IL-22 levels also showed a negative correlation. It is concluded that the down-regulation of regulatory B cells proportion and the IL-10 level may participate in the mechanism of CD4(+) T cell immunity disorder in CITP, which can provide new targets and ideas for the clinical immune regulation therapy.
authors.affiliation: Postgraduate College of South Medical University,Guangzhou 510515, Guangdong Province, China; Department of Blood Transfusion of Shenzhen Municipal Second People's Hospital, Shenzhen 518035, Guangdong Province, China.
authors.forename: Chang-Lin
authors.initials: CL
authors.lastname: Wu
authors.affiliation: Laboratory Examination Center,Affiliated South Hospital of South Medical University, Guangzhou 510511,Guangdong Province, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Laboratory Examination Center,Affiliated South Hospital of South Medical University, Guangzhou 510511,Guangdong Province, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zheng
authors.affiliation: Health Center of Inspection and Quarantine Burean of Shenzhen City, Shenzhen 518045,Guangdong Province, China. E-mail:wanhood@163.com.
authors.forename: Da-Yong
authors.initials: DY
authors.lastname: Gu
authors.affiliation: Health Center of Inspection and Quarantine Burean of Shenzhen City, Shenzhen 518045,Guangdong Province, China.
authors.forename: Jian-An
authors.initials: JA
authors.lastname: He
authors.affiliation: Department of Blood Transfusion of Shenzhen Municipal Second People's Hospital, Shenzhen 518035, Guangdong Province, China.
authors.forename: Chao-Peng
authors.initials: CP
authors.lastname: Shao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D060151:B-Lymphocytes, Regulatory / Q000166:cytology / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology*; D016022:Case-Control Studies; D002478:Cells, Cultured; D005260:Female; D006801:Humans; D016753:Interleukin-10 / Q000276:immunology; D008297:Male; D008875:Middle Aged; D016553:Purpura, Thrombocytopenic, Idiopathic / Q000097:blood* / Q000276:immunology*; D018417:Th1 Cells; D058504:Th17 Cells; D055815:Young Adult
chemical_list: C508609:IL10 protein, human; D016753:Interleukin-10