Circulating Tissue Factor-Positive Procoagulant Microparticles in Patients with Type 1 Diabetes

Abstract

Chenghui Zhang,1,2,* Qing Ou,1,* Yan Gu,1,* Gaiping Cheng,3 Rong Du,1,2 Li Yuan,1 Ruth LM Cordiner,4 Deying Kang,5 Jiaying Zhang,6 Qiaorong Huang,7 Chuan Yu,8 Li Kang,9 Xuan Wang,4,10 Xin Sun,5 Xianming Mo,7 Haoming Tian,1 Ewan R Pearson,4 Wentong Meng,7 Sheyu Li1,4 1Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China; 2Department of Endocrinology and Metabolism, Hospital of Chengdu Office of People’s Government of Tibetan Autonomous Region, Chengdu 610041, People’s Republic of China; 3Department of Clinical Nutrition, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China; 4Division of Population Health and Genomics, Ninewells Hospital and School of Medicine, University of Dundee, Dundee DD1 9SY, Scotland, UK; 5Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China; 6Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China; 7Laboratory of Stem Cell Biology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China; 8Department of Health-Related Social and Behavioral Science, West China School of Public Health, Sichuan University, Chengdu 610041, People’s Republic of China; 9Division of Systems Medicine, Ninewells Hospital and School of Medicine, University of Dundee, Dundee DD1 9SY, Scotland, UK; 10Science for Life Laboratory, Department of Medical Cell Biology, Uppsala University, Uppsala 75123, Sweden*These authors contributed equally to this workCorrespondence: Sheyu LiDepartment of Endocrinology and Metabolism, West China Hospital, Sichuan University, 37# Guoxue Road, Chengdu 610041, ChinaTel [phone]Fax [phone]Email [email protected] MengLaboratory of Stem Cell Biology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, 37# Guoxue Road, Chengdu, Sichuan 610041, People’s Republic of ChinaTel [phone]Fax [phone]Email [email protected]: To investigate the count of circulating tissue factor-positive (TF+) procoagulant microparticles (MPs) in patients with type 1 diabetes mellitus (T1DM).Methods: This case-control study included patients with T1DM and age and sex-matched healthy volunteers. The counts of phosphatidylserine-positive (PS+) MPs and TF+PS+MPs and the subgroups derived from different cell types were measured in the peripheral blood sample of the two groups using multicolor flow cytometric assay. We compared the counts of each MP between groups as well as the ratio of the TF+PS+MPs and PS+MPs (TF+PS+MPs/PS+MPs).Results: We recruited 36 patients with T1DM and 36 matched healthy controls. Compared with healthy volunteers, PS+MPs, TF+PS+MPs and TF+PS+MPs/PS+MPs were elevated in patients with T1DM (PS+MPs: 1078.5 ± 158.08 vs 686.84 ± 122.04/μL, P <0.001; TF+PS+MPs: 202.10 ± 47.47 vs 108.33 ± 29.42/μL, P <0.001; and TF+PS+MPs/PS+MPs: 0.16 ± 0.04 vs 0.19 ± 0.05, P = 0.004), mostly derived from platelet, lymphocytes and endothelial cells. In the subgroup analysis, the counts of total and platelet TF+PS+MPs were increased in patients with diabetic retinopathy (DR) and with higher HbA1c, respectively.Conclusion: Circulating TF+PS+MPs and those derived from platelet, lymphocytes and endothelial cells were elevated in patients with T1DM.Keywords: type 1 diabetes mellitus, microparticles, tissue factor, diabetic retinopathy

Keywords

• type 1 diabetes mellitus
• microparticles
• tissue factor
• diabetic retinopathy