Association between Genetic Polymorphism of The lncRNA MIAT rs1894720 with Ischemic Stroke Risk and lncRNA MIAT Expression Levels in The Blood after An Ischemic Stroke: A Case-Control Study

Document Type : Original Article

Authors

1 Department of Biology, Zarghan Branch, Islamic Azad University, Zarghan, Iran

2 Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

3 Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

Abstract

Objective: Genetic aspects can play an essential role in the occurrence and development of ischemic stroke (IS).
Rs1894720 polymorphism is one of the eight single nucleotide polymorphisms (SNPs) in the long non-coding RNA
(lncRNA) myocardial infarction-associated transcript (MIAT) locus. The aim of study is the lncRNA MIAT rs1894720
polymorphism decreases IS risk by reducing lncRNA MIAT expression.
Materials and Methods: In this case-control study, we studied 232 Iranian patients and 232 controls. The blood samples
were collected from patients admitted at different times after stroke symptoms. We enrolled 80, 78, and 74 patients
who arrived at the hospital between 0-24, 24-48, and 48-72 hours after the first appearance of symptoms, respectively.
DNA genotyping was done by the tetra-primer ARMS-PCR method. Circulating MIAT levels were evaluated by real-time
polymerase chain reaction (PCR).
Results: The GT genotype of MIAT rs1894720 showed a significant association with the risk of IS (OR=3.53, 95%
CI=2.13-5.84, P<0.001). MIAT expression was higher relative to the control within the first hours after IS. The MIAT
levels in IS patients with rs1894720 (GT) were significantly lower relative to patients who had the GG and TT genotypes.
Linear regression model indicated a significant correlation between MIAT expression with atherosclerotic risk factors
and types of stroke in IS patients. Receiver operating characteristic (ROC) curve analysis showed that the level of
lncRNA MIAT after IS could be diagnostic with an area under the curve (AUC) of 0.82. The sensitivity and specificity
were 80.17 and 67.24%, respectively (P<0.001).
Conclusion: Our study demonstrated that the MIAT rs1894720 polymorphism (GT) might increase the risk of IS in the
Iranian population. MIAT expression was up-regulated in our IS patients. Hence, it could be a diagnostic biomarker for IS.

Keywords

Main Subjects

References

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Cell Journal (Yakhteh)
Volume 25, Issue 12 - Serial Number 119
December 2023
Pages 863-873

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