PMID- 27931292 OWN - NLM STAT- MEDLINE DCOM- 20170220 LR - 20190609 IS - 1539-6304 (Electronic) IS - 1088-5412 (Linking) VI - 37 IP - 6 DP - 2016 Nov TI - Circulating follicular T-helper cell subset distribution in patients with asthma. PG - 154-161 AB - BACKGROUND: The pathogenesis of allergic asthma is primarily characterized by abnormality in the immunoglobulin E (IgE) pathway, suggesting a possible role for follicular T-helper cells (Tfh) in the genesis of excessive IgE accumulation. The blood chemokine (C-X-C motif) receptor 5 (CXCR5)+CD4+ T cells, known as circulating Tfh, share common functional characteristics with Tfh cells from germinal centers. There are three subsets of circulating Tfh cells: Tfh1 (CXCR3+CC chemokine receptor [CCR] 6), Tfh2 (CXCR3CCR6) and Tfh17 (CXCR3CCR6+). However, data on circulating Tfh cell subsets distribution in patients with asthma are not available. OBJECTIVE: To investigate the circulating Tfh cell subsets distribution in patients with asthma and to assess the relationship between Tfh cell subsets distribution and the serum IgE level. METHODS: Thirty patients with severe allergic asthma and 30 age- and sex-matched healthy controls were enrolled in this study. The percentages and phenotypic assays of circulating Tfh cell subsets were assessed by flow cytometry. The total IgE levels were also measured. The correlation between the percentage of circulating Tfh cell subsets and the levels of serum total IgE was analyzed. RESULTS: Our results showed polarization of Tfh2 cells within circulating Tfh cell subsets in the patients with asthma. Phenotypic assays showed that activated Tfh2 subtypes displayed the features of Tfh cells, including invariably coexpressed programmed cell death 1 (PD-1), and inducible costimulator (ICOS). Furthermore, not only the frequency of Tfh2 cells but also the ratio (%Tfh2/%Tfh1) positively correlated with the total IgE level in the blood. CONCLUSION: Results of our data described an altered circulating Tfh subset distribution, which implied that this cell subset might play an important role in the pathogenesis of asthma. FAU - Gong, Fang AU - Gong F AD - Department of Laboratory Medicine, The Third Hospital Affiliated to Nantong University, Wuxi, Jiangsu, P.R. China. FAU - Qian, Chunyan AU - Qian C FAU - Zhu, HuaYan AU - Zhu H FAU - Zhu, Jie AU - Zhu J FAU - Pan, Yuhong AU - Pan Y FAU - Dong, QiaoJing AU - Dong Q FAU - Jiang, DongLin AU - Jiang D LA - eng PT - Journal Article PL - United States TA - Allergy Asthma Proc JT - Allergy and asthma proceedings JID - 9603640 RN - 0 (Anti-Asthmatic Agents) RN - 0 (Antigens, Surface) RN - 0 (Biomarkers) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adult MH - Anti-Asthmatic Agents/administration & dosage MH - Antigens, Surface/metabolism MH - Asthma/*blood/diagnosis/drug therapy/*immunology MH - Biomarkers MH - Case-Control Studies MH - Female MH - Humans MH - Immunoglobulin E/blood/immunology MH - Immunophenotyping MH - *Lymphocyte Count MH - Male MH - Middle Aged MH - Respiratory Function Tests MH - T-Lymphocyte Subsets/*immunology/metabolism MH - T-Lymphocytes, Helper-Inducer/*immunology/metabolism EDAT- 2016/12/10 06:00 MHDA- 2017/08/18 06:00 CRDT- 2016/12/10 06:00 PHST- 2016/12/10 06:00 [entrez] PHST- 2016/12/10 06:00 [pubmed] PHST- 2017/08/18 06:00 [medline] AID - 10.2500/aap.2016.37.3982 [doi] PST - ppublish SO - Allergy Asthma Proc. 2016 Nov;37(6):154-161. doi: 10.2500/aap.2016.37.3982.