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Optimized Collection Protocol for Plasma MicroRNA Measurement in Patients with Cardiovascular Disease.

ABSTRACT: Background. Various microRNAs (miRNAs) are used as markers of acute coronary syndrome, in which heparinization is considered mandatory therapy. Nevertheless, a standard method of handling plasma samples has not been proposed, and the effects of heparin treatment on miRNA detection are rarely discussed. Materials and Method. This study used quantitative polymerase chain reaction (qPCR) analysis to investigate how storage temperature, standby time, hemolysis, and heparin treatment affect miRNA measurement in plasma samples from 25 patients undergoing cardiac catheterization. Results. For most miRNAs, the qPCR results remained consistent during the first 2 hours. The miRNA signals did not significantly differ between samples stored at 4°C before processing and samples stored at room temperature (RT) before processing. miR-451a/miR-23a ratio < 60 indicated < 0.12% hemolysis with 100% sensitivity and 100% specificity. Pretreatment with 0.25?U heparinase I recovered qPCR signals that were reduced by in vivo heparinization. Conclusions. For miRNA measurement, blood samples stored at RT should be processed into plasma within 2 hours after withdrawal and should be pretreated with 0.25?U heparinase I to overcome heparin-attenuated miRNA signals. The miR-451a/miR-23a ratio is a reliable indicator of significant hemolysis.

SUBMITTER: Wu CS

PROVIDER: S-EPMC5048034 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Optimized Collection Protocol for Plasma MicroRNA Measurement in Patients with Cardiovascular Disease.

Wu Chi-Sheng CS Lin Fen-Chiung FC Chen Shu-Jen SJ Chen Yung-Lung YL Chung Wen-Jung WJ Cheng Cheng-I CI

BioMed research international 20160920

<i>Background</i>. Various microRNAs (miRNAs) are used as markers of acute coronary syndrome, in which heparinization is considered mandatory therapy. Nevertheless, a standard method of handling plasma samples has not been proposed, and the effects of heparin treatment on miRNA detection are rarely discussed. <i>Materials and Method</i>. This study used quantitative polymerase chain reaction (qPCR) analysis to investigate how storage temperature, standby time, hemolysis, and heparin treatment af ...[more]

PMID: 27725938

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Optimized Collection Protocol for Plasma MicroRNA Measurement in Patients with Cardiovascular Disease.

Publications

Optimized Collection Protocol for Plasma MicroRNA Measurement in Patients with Cardiovascular Disease.

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