We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Expression of miRNA-26a in platelets is associated with clopidogrel resistance following coronary stenting.
- Authors
SHUXIA CHEN; XIAOYONG QI; HUA CHEN; MINGQUAN LI; JIAN GU; CHUNXIA LIU; HUA XUE; LILI WANG; YANPING GENG; PENG QI; YUPING HAN
- Abstract
The present study aimed to evaluate the association between platelet microRNA (miRNA)-26a expression and clopidogrel resistance in patients who underwent coronary stenting. Between September 2013 and August 2014, 43 patients with coronary heart disease underwent percutaneous coronary intervention at Heibei General Hospital (Shijiazhuang, China). In the same period, 20 healthy volunteers without any history of cardiovascular disease were enrolled in the present study as the control group. Flow cytometry was used to measure the phosphorylation levels of vasodilator-stimulated phosphoprotein (VASP), and to calculate the platelet reactivity index (PRI). Low response to clopidogrel was defined as PRI ≥50% on day 7 following clopidogrel administration. Western blotting was used to measure protein expression of VASP and reverse transcription-quantitative polymerase chain reaction analysis was performed to determine the expression levels of mRNA and miRNAs. Bioinformatics tools were employed to predict that miR-26a, miR-199 and miR-23a may target VASP mRNA. The results of the present study demonstrated that the activity of platelets in patients with low or high clopidogrel response was increased, as compared with healthy subjects. No differences in platelet VASP protein expression levels were detected between patients with high clopidogrel response and healthy subjects; whereas VASP protein expression was elevated in patients with low clopidogrel response. Furthermore VASP gene transcription was maintained at low levels in healthy subjects and patients with high clopidogrel response, whereas patients with low clopidogrel response exhibited increased VASP mRNA expression levels. Platelet expression of miRNA-26a, but not miRNA-199 or miRNA-23a, was associated with high platelet reactivity. Serum miRNA-26a, miRNA-199 and miRNA-23a were not demonstrated to be involved in clopidogrel resistance. Therefore, the present study demonstrated that platelet miRNA-26a has an important role in clopidogrel resistance. Combined miRNA and VASP PRI tests may aid the early diagnosis and prediction of clopidogrel resistance.
- Subjects
CLOPIDOGREL; MICRORNA genetics; CORONARY disease; CARDIOVASCULAR diseases; PHOSPHORYLATION; VASODILATORS
- Publication
Experimental & Therapeutic Medicine, 2016, Vol 12, Issue 1, p518
- ISSN
1792-0981
- Publication type
Article
- DOI
10.3892/etm.2016.3278