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Duan L, Li L, Zhao Z, Wang X, Zheng Z, Li F, Li G. Antistricture Ureteral Stents with a Braided Composite Structure and Surface Modification with Antistenosis Drugs. ACS Biomater Sci Eng 2024; 10:607-619. [PMID: 38047884 DOI: 10.1021/acsbiomaterials.3c00781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
The present work describes the development of a drug-loaded ureteral stent with antistricture function based on a trilayer design in which the middle layer was braided from biodegradable poly(p-dioxanone) (PDO) monofilament. Antistenosis drugs rapamycin and paclitaxel were loaded into a silk fibroin (SF) solution and coated on the inner and outer layers of the braided PDO stent. The cumulative release of rapamycin and paclitaxel was sustained over 30 days, with a total release above 80%. The drug-loaded ureteral stents inhibited the proliferation of fibroblasts and smooth muscle cells in vitro. Subcutaneous implantation in rats showed that the drug-loaded ureteral stents were biocompatible with durable mechanical properties in vivo, revealing the inhibition of an excessive growth of fibroblasts and excessive deposition of collagen fibers. In conclusion, the dual-drug-loaded biodegradable ureteral stents show the possibility for treatment of ureteral strictures and avoid the occurrence of complications such as inflammation and restricture.
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Affiliation(s)
- Lirong Duan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
- Jiangsu Advanced Textile Engineering Technology Center, Nantong 226007, China
| | - Lu Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
- Jiangsu Advanced Textile Engineering Technology Center, Nantong 226007, China
| | - Zeyu Zhao
- Department of Applied Physics, The Hong Kong Polytechnic University, 11 Yukchoi Rd., Hung Hom, Kowloon 10087, Hong Kong, P. R. China
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Feng Li
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Gang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
- Jiangsu Advanced Textile Engineering Technology Center, Nantong 226007, China
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