Xu DM, Zhang ZW, Yi JX, Xie L, Yu WJ, Qiu JF, Xu CW, He CL, Xu XR, Yin J. Role of Ca
2+, Calnexin and Calreticulin in Platelet from Adult Patients with Chronic Immune Thrombocytopenic Purpura.
Int J Gen Med 2022;
15:2119-2125. [PMID:
35237072 PMCID:
PMC8885122 DOI:
10.2147/ijgm.s347301]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/25/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND
Adult chronic immune thrombocytopenia (chronic ITP) is a common autoimmune hemorrhagic disease characterized by decreased platelet production and increased platelet destruction, leading to thrombocytopenia. In this study, Ca2+, calnexin (CNX) and calreticulin (CRT) within platelets from adult patients with chronic ITP were investigated.
METHODS
Platelets were isolated from blood specimen collected from 20 adult patients with chronic ITP and 20 healthy volunteers. Ca2+, CNX and CRT were determined by flow cytometry, and the results were analyzed with EXPO32 ADC software.
RESULTS
Flow cytometry showed the expressions of Ca2+ (74.19±19.40% vs 22.79±10.47%) was elevated (P<0.05). However, CNX (15.10±7.32% vs 41.79±14.45%) and CRT (25.11±12.66% vs 38.58±12.02%) were decreased markedly in platelets from adult patients with chronic ITP (P<0.05 compared with healthy volunteers).
CONCLUSION
Based on enhanced expression of Ca2+ and attenuated expression of CNX and CRT in patients with chronic ITP, Ca2+ concentration and its associated down-regulated proteins may be important regulatory signals in the pathogenesis of chronic ITP.
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