Aims:This study was to explore the relationship between plasma exosomes
and Acute myocardial infarction (AMI).Background:Acute myocardial infarction (AMI) is one of the most common cardiovascular
complications. Recent studies have shown that exosomes play a crucial role in the
development and progression of cardiovascular diseases. However, there is a lack of relevant
research on the relationship between plasma exosomes and AMI.Objective:This study was designed to explore the relationship between plasma exosomes
and AMI.Methods:This retrospective study collected the basic clinical data of patients with AMI
(n = 10), stable angina pectoris (SAP, n = 10), and noncoronary heart disease (CON, n =
10) at the Department of Cardiovascular Medicine at Taizhou Hospital (Zhejiang, China,
2021.01 to 2021.12). Proteomics was used to systematically screen the differential
proteins of plasma exosomes in patients with clinical AMI, SAP, and CON. Then, the results
were further verified using parallel reaction monitoring (PRM).Results:Five of all the differentially expressed proteins (DEPs) were quantified by
PRM. Compared with the CON group, heparin cofactor 2 (SERPIND1), mannan-binding
lectin serine protease 1 (MASP1), ficolin-2 (FCN2), and α1-Microglobulin/bikunin
precursor (AMBP) were upregulated in patients with AMI and SAP, with a higher expression
in AMI than in SAP. Additionally, human leukocyte antigen (HLA-C) was
downregulated in both exosomes and plasma.Conclusion:The expression of four plasma exosome biomarkers in AMI and SAP patients
was higher than that in noncoronary heart disease (NCHD) patients. HLA-C was
downregulated in both exosomes and plasma, showing a potential to serve as a new candidate
target for the detection and therapy of AMI.