國家衛生研究院 NHRI:Item 3990099045/11395
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/11395


    Title: MicroRNA-21 and venous neointimal hyperplasia of dialysis vascular access
    Authors: Wu, CC;Chen, LJ;Hsieh, MY;Lo, CM;Lin, MH;Tsai, HE;Song, HL;Chiu, JJ
    Contributors: Institute of Cellular and Systems Medicine
    Abstract: BACKGROUND AND OBJECTIVES: There is increasing evidence that microRNAs (miRNAs) play crucial roles in the regulation of neointima formation. However, the translational evidence of the role of miRNAs in dialysis vascular access is limited. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: miRNA expression in tissues was assessed by using venous tissues harvested from ten patients on dialysis who received revision or removal surgery, and ten patients who were predialysis and received creation surgery of arteriovenous fistulas served as controls. To extend these findings, 60 patients who received angioplasty of dialysis access were enrolled and the levels of circulating miRNAs were determined before and 2 days after angioplasty. Clinical follow-up was continued monthly for 6 months. The primary outcome of angioplasty cohort was target lesion restenosis within 6 months after angioplasty. RESULTS: In the surgery cohort, the expressions of miR-21, miR-130a, and miR-221 were upregulated in stenotic tissues, whereas those of miR-133 and miR-145 were downregulated. In situ hybridization revealed similar expression patterns of these miRNAs, localized predominantly in the neointima region. Twenty eight patients in the angioplasty cohort developed restenosis within 6 months. The levels of circulating miR-21, miR-130a, miR-221, miR-133, and miR-145 significantly increased 2 days after angioplasty. Kaplan-Meier plots showed that patients with an increase of miR-21 expression level >0.35 have a higher risk of patency loss (hazard ratio, 4.45; 95% confidence interval, 1.68 to 11.7). In a multivariable analysis, postangioplasty increase of miR-21 expression was independently associated with restenosis (hazard ratio, 1.20; 95% confidence interval, 1.07 to 1.35 per one unit increase of miR-21 expression level; P=0.001). CONCLUSIONS: Certain miRNAs are differentially expressed in the stenotic venous segments of dialysis accesses. An increase in blood miR-21 level with angioplasty is associated with a higher risk of restenosis.
    Date: 2018-11
    Relation: Clinical Journal of the American Society of Nephrology : CJASN. 2018 Nov;13(11):1712-1720.
    Link to: http://dx.doi.org/10.2215/cjn.02410218
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1555-9041&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000449800100016
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85056398604
    Appears in Collections:[Jeng-Jiann Chiu ] Periodical Articles

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