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  1. NTU Scholars
  2. 醫學院
  3. 醫學院附設醫院 (臺大醫院)
Please use this identifier to cite or link to this item: https://scholars.lib.ntu.edu.tw/handle/123456789/410229
Title: MicroRNA-21 and venous neointimal hyperplasia of dialysis vascular access
Authors: Wu, C.-C.
Chen, L.-J.
Hsieh, M.-Y.
Lo, C.-M.
Lin, M.-H.
Tsai, H.-E.
SONG, HSIANG-LIN 
Chiu, J.-J.
Issue Date: 2018
Journal Volume: 13
Journal Issue: 11
Source: Clinical Journal of the American Society of Nephrology 
Abstract: 
© 2018 by the American Society of Nephrology. 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.
URI: https://scholars.lib.ntu.edu.tw/handle/123456789/410229
ISSN: 15559041
DOI: 10.2215/CJN.02410218
http://www.scopus.com/inward/record.url?eid=2-s2.0-85056398604&partnerID=MN8TOARS
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Appears in Collections:醫學院附設醫院 (臺大醫院)

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臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

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