Plasma miR-126 as a potential marker predicting major adverse cardiac events in dual antiplatelet-treated patients after percutaneous coronary intervention.
OBJECTIVE
Antiplatelet treatment can cause a change in plasma levels of platelet microRNAs (miRNAs). However, it is not clear whether the plasma level of platelet miRNAs can predict clinical outcomes of antiplatelet treatment. The present study aimed to evaluate the association of plasma miR-16, miR%E2%80%9121, miR-126, miR-26b, and miR-223 with the risk of clinical outcomes in dual antiplatelet-treated patients after percutaneous coronary intervention (PCI).


RESULTS
A total of 491 Han Chinese patients who had received PCI and dual antiplatelet therapy were sequentially recruited to the study and followed for up to one year. Plasma concentrations of five candidate miRNAs early the next morning after PCI were determined by quantitative reverse transcription PCR. The effect of the plasma miRNA level on major adverse cardiovascular events (MACE) within one year and bleeding within six months were assessed. We found that a higher plasma miR-126 level was significantly associated with a higher risk in terms of time-to-MACE. When compared with the plasma miR-126 level in the first three quartiles, the hazard ratio (HR) for the plasma miR-126 level in the fourth quartile was 2.61 (95% CI: 1.32-5.18, p=0.006). Multivariable Cox regression analysis showed that diabetes mellitus, ejection fraction, hypertension and a higher plasma miR-126 level were independent risk factors for MACE. Plasma miR-223 level was not an independent predictive marker for MACE. There was no significant association between the level of five plasma miRNAs and bleeding events during six-month follow-up.


CONCLUSIONS
Based on these results, we suggest that plasma miR-126 could be a potential marker for predicting major adverse cardiac events in patients after PCI.
Medical Research Center of Guangdong General Hospital, Guangzhou, Guangdong, China.
Xi-Yong
XY
Yu
Ji-Yan
JY
Chen
Zhi-Wei
ZW
Zheng
Hong
H
Wu
Li-Wen
LW
Li
Zhi-Wei
ZW
Zhang
Zhi-Hong
ZH
Chen
Qiu-Xiong
QX
Lin
Ya-Ling
YL
Han
Shi-Long
SL
Zhong
D000368:Aged; D003324:Coronary Artery Disease / Q000175:diagnosis* / Q000628:therapy; D005260:Female; D006321:Heart / Q000503:physiopathology; D006470:Hemorrhage; D006801:Humans; D008297:Male; D035683:MicroRNAs / Q000097:blood*; D008875:Middle Aged; D062645:Percutaneous Coronary Intervention / Q000379:methods; D010975:Platelet Aggregation Inhibitors / Q000627:therapeutic use*; D011237:Predictive Value of Tests; D012307:Risk Factors
C527111:MIRN126 microRNA, human; D035683:MicroRNAs; D010975:Platelet Aggregation Inhibitors