alexa Down-regulation of fecal miR-143 and miR-145 as potential markers for colorectal cancer.
Gastroenterology

Gastroenterology

Journal of Gastrointestinal & Digestive System

Author(s): Li JM, Zhao RH, Li ST, Xie CX, Jiang HH,

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Abstract OBJECTIVE: To detect 4 MicroRNA (miRNA) in the stool samples of colorectal cancer (CRC) patients to determine whether these miRNAs could be biomarkers in CRC screening or treatment. METHODS: A retrospective comparison study was carried out in the Department of Colorectal Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China from September 2009 to March 2011. We detected 4 miRNAs (miR-143, miR-145, miR-21, and miR-106a) in the stool samples of 38 CRC patients and 13 healthy individuals. Total RNA from the stool samples was extracted using the EZNA TM stool RNA kit R6828-01. The miRNA quantification was carried out using TaqMan miRNA assays and the TaqMan Gene Expression Master Mix. RESULTS: The expression levels of miR-143 and miR-145 in the stool of the CRC patients were lower than in those of the healthy persons (p<0.005, median of 2-∆∆ct). No statistically significant difference was found in the expression levels of both miR-21 and miR-106a between the stool of CRC patients and those of the healthy persons (p>0.05). CONCLUSION: The detection of fecal miRNAs is a potential method for CRC diagnosis or screening. Particularly, the down-regulation of fecal miR-143 and miR-145 could be a potential marker for CRC.
This article was published in Saudi Med J and referenced in Journal of Gastrointestinal & Digestive System

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