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21 July 2018 : Clinical Research  

Circulating Long Noncoding RNA LIPCAR Acts as a Novel Biomarker in Patients with ST-Segment Elevation Myocardial Infarction

Meng Li12BE, Yue-Feng Wang1BD, Xin-Chun Yang1AG*, Li Xu1CF, Wei-Ming Li1AD, Kun Xia1DE, Da-Peng Zhang1BC, Ri-Na Wu2CF, Tian Gan3CF

DOI: 10.12659/MSM.909348

Med Sci Monit 2018; 24: CLR5064-5070

Abstract

BACKGROUND: Long noncoding RNAs (lncRNAs) recently have been implicated in the pathological processes of cardiovascular diseases. In this study, LncRNADisease database and PubMed database were used to screen myocardial infraction (MI)-related lncRNAs and to investigate the diagnostic role of lncRNAs in ST-segment elevation myocardial infraction (STEMI).

MATERIAL AND METHODS: Forty-six patients with STEMI and 40 healthy controls were included in the study. Venous blood samples acquired at different time points and the expression levels of lncRNAs in plasma were measured by qRT-PCR. In addition, other blood samples were collected before and after percutaneous coronary intervention (PCI). Correlation analysis and receiver operating characteristic (ROC) curve were used to assess the diagnosis value of the markers. All included patients were followed up for 12±1 months.

RESULTS: Nine MI-related lncRNAs were selected from the database. The qRT-PCR results showed that the expression of hypoxia inducible factor 1A antisense RNA 2 (aHIF), member 1 opposite strand/antisense transcript 1 (KCNQ1OT1), and mitochondrial long noncoding RNA uc022bqs.1 (LIPCAR) were significantly increased in patients with STEMI compared to the control patients. The ROC curve showed that LIPCAR (AUC=0.782, 95% CI: 0.707–0.0.894) had better diagnostic accuracy. Moreover, correlation analysis indicated that LIPCAR were positively correlated with myocardial enzymes and negatively correlated with left ventricular ejection fraction. The level of LIPCAR in STEMI patients after PCI was lower (P<0.05). Multivariate regression analysis indicated that higher levels of LIPCAR were independent predictors of major adverse cardiovascular events in patients with STEMI (HR=5.93; 95% CI, 1.46–9.77; P=0.001).

CONCLUSIONS: Highly expressed LIPCAR in plasma may serve as a warning sign for the diagnosis of STEMI.

Keywords: Biological Markers, Diagnosis, Myocardial Infarction

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750