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Tsung TH, Tsai YC, Lee HP, Chen YH, Lu DW. Biodegradable Polymer-Based Drug-Delivery Systems for Ocular Diseases. Int J Mol Sci 2023; 24:12976. [PMID: 37629157 PMCID: PMC10455181 DOI: 10.3390/ijms241612976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/12/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Ocular drug delivery is a challenging field due to the unique anatomical and physiological barriers of the eye. Biodegradable polymers have emerged as promising tools for efficient and controlled drug delivery in ocular diseases. This review provides an overview of biodegradable polymer-based drug-delivery systems for ocular diseases with emphasis on the potential for biodegradable polymers to overcome the limitations of conventional methods, allowing for sustained drug release, improved bioavailability, and targeted therapy. Natural and synthetic polymers are both discussed, highlighting their biodegradability and biocompatibility. Various formulation strategies, such as nanoparticles, hydrogels, and microemulsions, among others, are investigated, detailing preparation methods, drug encapsulation, and clinical applications. The focus is on anterior and posterior segment drug delivery, covering glaucoma, corneal disorders, ocular inflammation, retinal diseases, age-related macular degeneration, and diabetic retinopathy. Safety considerations, such as biocompatibility evaluations, in vivo toxicity studies, and clinical safety, are addressed. Future perspectives encompass advancements, regulatory considerations, and clinical translation challenges. In conclusion, biodegradable polymers offer potential for efficient and targeted ocular drug delivery, improving therapeutic outcomes while reducing side effects. Further research is needed to optimize formulation strategies and address regulatory requirements for successful clinical implementation.
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Affiliation(s)
- Ta-Hsin Tsung
- Department of Ophthalmology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan; (T.-H.T.); (Y.-C.T.); (H.-P.L.); (Y.-H.C.)
| | - Yu-Chien Tsai
- Department of Ophthalmology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan; (T.-H.T.); (Y.-C.T.); (H.-P.L.); (Y.-H.C.)
- Department of Ophthalmology, Taoyuan Armed Forces General Hospital, Taoyuan 325, Taiwan
| | - Hsin-Pei Lee
- Department of Ophthalmology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan; (T.-H.T.); (Y.-C.T.); (H.-P.L.); (Y.-H.C.)
| | - Yi-Hao Chen
- Department of Ophthalmology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan; (T.-H.T.); (Y.-C.T.); (H.-P.L.); (Y.-H.C.)
| | - Da-Wen Lu
- Department of Ophthalmology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan; (T.-H.T.); (Y.-C.T.); (H.-P.L.); (Y.-H.C.)
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Rosendorf J, Klicova M, Cervenkova L, Horakova J, Klapstova A, Hosek P, Palek R, Sevcik J, Polak R, Treska V, Chvojka J, Liska V. Reinforcement of Colonic Anastomosis with Improved Ultrafine Nanofibrous Patch: Experiment on Pig. Biomedicines 2021; 9:102. [PMID: 33494257 PMCID: PMC7909771 DOI: 10.3390/biomedicines9020102] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 01/12/2023] Open
Abstract
Anastomotic leakage is a dreadful complication in colorectal surgery. It has a negative impact on postoperative mortality, long term life quality and oncological results. Nanofibrous polycaprolactone materials have shown pro-healing properties in various applications before. Our team developed several versions of these for healing support of colorectal anastomoses with promising results in previous years. In this study, we developed highly porous biocompatible polycaprolactone nanofibrous patches. We constructed a defective anastomosis on the large intestine of 16 pigs, covered the anastomoses with the patch in 8 animals (Experimental group) and left the rest uncovered (Control group). After 21 days of observation we evaluated postoperative changes, signs of leakage and other complications. The samples were assessed histologically according to standardized protocols. The material was easy to work with. All animals survived with no major complication. There were no differences in intestinal wall integrity between the groups and there were no signs of anastomotic leakage in any animal. The levels of collagen were significantly higher in the Experimental group, which we consider to be an indirect sign of higher mechanical strength. The material shall be further perfected in the future and possibly combined with active molecules to specifically influence the healing process.
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Affiliation(s)
- Jachym Rosendorf
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic; (L.C.); (P.H.); (R.P.); (J.S.); (R.P.)
- Department of Surgery, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic;
| | - Marketa Klicova
- Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, 460 01 Liberec, Czech Republic; (M.K.); (J.H.); (A.K.); (J.C.)
| | - Lenka Cervenkova
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic; (L.C.); (P.H.); (R.P.); (J.S.); (R.P.)
| | - Jana Horakova
- Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, 460 01 Liberec, Czech Republic; (M.K.); (J.H.); (A.K.); (J.C.)
| | - Andrea Klapstova
- Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, 460 01 Liberec, Czech Republic; (M.K.); (J.H.); (A.K.); (J.C.)
| | - Petr Hosek
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic; (L.C.); (P.H.); (R.P.); (J.S.); (R.P.)
| | - Richard Palek
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic; (L.C.); (P.H.); (R.P.); (J.S.); (R.P.)
- Department of Surgery, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic;
| | - Jan Sevcik
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic; (L.C.); (P.H.); (R.P.); (J.S.); (R.P.)
| | - Robert Polak
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic; (L.C.); (P.H.); (R.P.); (J.S.); (R.P.)
- Department of Surgery, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic;
| | - Vladislav Treska
- Department of Surgery, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic;
| | - Jiri Chvojka
- Department of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, 460 01 Liberec, Czech Republic; (M.K.); (J.H.); (A.K.); (J.C.)
| | - Vaclav Liska
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic; (L.C.); (P.H.); (R.P.); (J.S.); (R.P.)
- Department of Surgery, Faculty of Medicine in Pilsen, Charles University, 301 00 Pilsen, Czech Republic;
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