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논문 기본 정보

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학술저널
저자정보
배인호  (전남대학교) Kyung Seob Lim (Korea Research Institute of Bioscience and Biotechnology) Jun-Kyu Park (Sunchon National University) 송주한 (전남대학교) Sin-Hye Oh (Chonnam National University) Jung-Woo Kim (Chonnam National University) Zijiao Zhang (School of Dentistry Chonnam National University) Chan Park (Chungnam National University) Jeong-Tae Koh (Chonnam National University)
저널정보
한국생체재료학회 생체재료학회지 생체재료학회지 제25권 제4호
발행연도
2021.12
수록면
457 - 464 (8page)
DOI
https://doi.org/10.1186/s40824-021-00232-8

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Objective: Various surface modification techniques that can further improve the function and usability of stainless steel as a medical device have been reported. In the present study, the physical and biological properties of nanoporous stainless steel as well as its usefulness for drug delivery were assessed. Methods: The specimen was prepared with a circular disk shape (15 mm in diameter and 1 mm in thickness). The disk was subjected to electropolishing at a constant voltage of 20 V and 10 A for 10 min in an acidic environment (50% H2SO4). Everolimus (EVL) was used as a testing drug for drug-loading capacity of the material surface and release kinetics. The physiobiological properties of the material were assessed using platelet adhesion, and smooth muscle cell (SMC) adhesion, migration, and proliferation assays. Results: The surface roughness of the postpolishing group was greater than that of the nonpolishing group. Platelet adhesion and SMC adhesion and migration were inhibited in the postpolishing group compared to those in the prepolishing group. In the postpolishing group, the total amount of EVL on the surface (i.e., drug storage rate) was higher and the drug release rate was lower, with half the amount of the EVL released within 4 days compared with only 1 day for that of the prepolishing group. Conclusion: Taken together, this stainless steel with a nanoporous surface could be used as a medical device for controlling cellular responses and carrying drugs.

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