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논문 기본 정보

자료유형
학술저널
저자정보
Park Dae Sung (Cardiovascular Research Center Chonnam National University Hospital Gwangju Korea.) Jeong Myung Ho (Department of Cardiology Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea.) 진유정 (전남대학교병원) Na Mi Hyang (The Cardiovascular Convergence Research Center of Chonnam National University Hospital) Sim Doo Sun (Department of Cardiology Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea.) Kim Munki (The Cardiovascular Convergence Research Center of Chonnam National University Hospital) Cho Kyung Hoon (Department of Cardiology Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea.) Hyun Dae Young (Department of Cardiology Chonnam National University Hospital Gwangju Korea.) Oh Seok (The Cardiovascular Convergence Research Center of Chonnam National University Hospital) Kim Jeong Ha (The Cardiovascular Convergence Research Center of Chonnam National University Hospital) Lim Kyung Seob (Futuristic Animal Resource and Research Center Korea Research Institute of Bioscience and Biotechnology Ochang Korea) Park Jun-Kyu (CGBio Co. Ltd. Seoul Korea.) 김한기 ((주) 시지바이오) Hong Young Joon (Department of Cardiology Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea.) Kim Ju Han (Department of Cardiology Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea.) Ahn Youngkeun (Department of Cardiology Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea.) Kim Jeong Hun (Department of Cardiology Chonnam National University Hospital)
저널정보
한국조직공학과 재생의학회 조직공학과 재생의학 조직공학과 재생의학 제20권 제2호
발행연도
2023.4
수록면
239 - 249 (11page)
DOI
10.1007/s13770-023-00518-z

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Background: Biodegradable poly (l-lactic acid) (PLLA), a bio safe polymer with a large elastic modulus, is widely used in biodegradable medical devices. However, because of its poor mechanical properties, a PLLA strut must be made twice as thick as a metal strut for adequate blood vessel support. Therefore, the mechanical properties of a drug-eluting metal-based stents (MBS) and a bioresorbable vascular scaffolds (BVS) were evaluated and their safety and efficacy were examined via a long-term rabbit iliac artery model. Methods: The surface morphologies of the MBSs and BVSs were investigated via optical and scanning electron microscopy. An everolimus-eluting (EE) BVS or an EE-MBS was implanted into rabbit iliac arteries at a 1.1:1 stent-to-artery ratio. Twelve months afterward, stented iliac arteries from each group were analyzed via X-ray angiography, optical coherence tomography (OCT), and histopathologic evaluation. Results: Surface morphology analysis of the EE coating on the MBS confirmed that it was uniform and very thin (4.7 μm). Comparison of the mechanical properties of the EE-MBS and EE-BVS showed that the latter outperformed the former in all aspects (radial force (2.75 vs. 0.162 N/mm), foreshortening (0.24% vs. 1.9%), flexibility (0.52 vs. 0.19 N), and recoil (3.2% vs. 6.3%). At all time points, the percent area restenosis was increased in the EE-BVS group compared to the EE-MBS group. The OCT and histopathological analyses indicate no significant changes in strut thickness. Conclusion: BVSs with thinner struts and shorter resorption times should be developed. A comparable long-term safety/efficacy evaluation after complete absorption of BVSs should be conducted.

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