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Wen KC, Li ZA, Liu JH, Zhang C, Zhang F, Li FQ. Recent developments in ureteral stent: Substrate material, coating polymer and technology, therapeutic function. Colloids Surf B Biointerfaces 2024; 238:113916. [PMID: 38636438 DOI: 10.1016/j.colsurfb.2024.113916] [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] [Received: 01/27/2024] [Revised: 03/21/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
The ureteral stent is an effective treatment for clinical ureteral stricture following urological surgery, and the functional coating of the stent could effectively inhibit bacterial colonization and other complications. The present review provides an analysis and description of the materials used in ureteral stents and their coatings. Emphasis is placed on the technological advancements of functional coatings, taking into consideration the characteristics of these materials and the properties of their active substances. Furthermore, recent advances in enhancing the therapeutic efficacy of functional coatings are also reviewed. It is anticipated that this article will serve as a valuable reference providing insights for future research development on new drug-loaded ureteral stents.
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Affiliation(s)
- Kai-Chao Wen
- School of Medicine, Shanghai University, Shanghai 200444, China; Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China
| | - Zheng-An Li
- School of Medicine, Shanghai University, Shanghai 200444, China; Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China
| | - Ji-Heng Liu
- Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China
| | - Chuan Zhang
- School of Medicine, Shanghai University, Shanghai 200444, China.
| | - Feng Zhang
- Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China.
| | - Feng-Qian Li
- School of Medicine, Shanghai University, Shanghai 200444, China; Department of Urology/Pharmaceutics, Shanghai Eighth People's Hospital, Shanghai 200235, China.
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Liu X, Han X, Shang Y, Wang L, Shen J, Yuan J. Hydrogen sulfide releasing poly(γ-glutamic acid) biocomposite hydrogel with monitoring, antioxidant, and antibacterial properties for diabetic wound healing. Int J Biol Macromol 2023; 253:127053. [PMID: 37774813 DOI: 10.1016/j.ijbiomac.2023.127053] [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] [Received: 07/24/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/01/2023]
Abstract
Adverse factors such as high levels of glucose, oxidative stress, inflammation, and bacterial infection impede diabetic wound healing and even worsen wounds. Owing to its outstanding anti-inflammatory and antioxidant properties as well as the potential to promote cell migration and proliferation, hydrogen sulfide(H2S) gas therapy is promising for chronic diabetic wound recovery. In this work, a multifunctional poly(γ-glutamic acid)(PGA) hydrogel encapsulated with keratin-based H2S donor(KTC), ciprofloxacin(Cip), and anthocyanins(Ant) was developed. The resultant hydrogel was capable of releasing H2S, thereby promoting cell proliferation and enhancing anti-inflammation and antioxidant activity. The release of antibiotic Cip was accelerated under a diabetic wound microenvironment, thereby enhancing the antibacterial activity of the hydrogel. The encapsulated Ant could serve as a pH monitor, sensitively indicating wound pH conditions in situ and indirectly reflecting wound infection. In vivo results in diabetic wound healing suggested that PGA/Ant/KTC/Cip hydrogel reduced inflammation and promoted angiogenesis and collagen deposition, thereby accelerating wound healing.
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Affiliation(s)
- Xu Liu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, Department of Materials Science and Engineering, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China
| | - Xiao Han
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, Department of Materials Science and Engineering, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China
| | - Yushuang Shang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, Department of Materials Science and Engineering, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China
| | - Lijuan Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, Department of Materials Science and Engineering, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, Department of Materials Science and Engineering, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China.
| | - Jiang Yuan
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, Department of Materials Science and Engineering, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China.
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Abbasnezhad N, Zirak N, Champmartin S, Shirinbayan M, Bakir F. An Overview of In Vitro Drug Release Methods for Drug-Eluting Stents. Polymers (Basel) 2022; 14:2751. [PMID: 35808798 PMCID: PMC9269075 DOI: 10.3390/polym14132751] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 01/08/2023] Open
Abstract
The drug release profile of drug-eluting stents (DESs) is affected by a number of factors, including the formulation, design, and physicochemical properties of the utilized material. DES has been around for twenty years and despite its widespread clinical use, and efficacy in lowering the rate of target lesion restenosis, it still requires additional development to reduce side effects and provide long-term clinical stability. Unfortunately, for analyzing these implants, there is still no globally accepted in vitro test method. This is owing to the stent's complexity as well as the dynamic arterial compartments of the blood and vascular wall. The former is the source of numerous biological, chemical, and physical mechanisms that are more commonly observed in tissue, lumen, and DES. As a result, universalizing bio-relevant apparatus, suitable for liberation testing of such complex implants is difficult. This article aims to provide a comprehensive review of the methods used for in vitro release testing of DESs. Aspects related to the correlation of the release profiles in the cases of in vitro and in vivo are also addressed.
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Affiliation(s)
- Navideh Abbasnezhad
- Arts et Métiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France; (N.Z.); (S.C.)
- Arts et Métiers Institute of Technology, CNAM, PIMM, HESAM University, F-75013 Paris, France;
| | - Nader Zirak
- Arts et Métiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France; (N.Z.); (S.C.)
- Arts et Métiers Institute of Technology, CNAM, PIMM, HESAM University, F-75013 Paris, France;
| | - Stéphane Champmartin
- Arts et Métiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France; (N.Z.); (S.C.)
| | - Mohammadali Shirinbayan
- Arts et Métiers Institute of Technology, CNAM, PIMM, HESAM University, F-75013 Paris, France;
| | - Farid Bakir
- Arts et Métiers Institute of Technology, CNAM, LIFSE, HESAM University, F-75013 Paris, France; (N.Z.); (S.C.)
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Elhattab K, Bhaduri SB, Sikder P. Influence of Fused Deposition Modelling Nozzle Temperature on the Rheology and Mechanical Properties of 3D Printed β-Tricalcium Phosphate (TCP)/Polylactic Acid (PLA) Composite. Polymers (Basel) 2022; 14:polym14061222. [PMID: 35335552 PMCID: PMC8952643 DOI: 10.3390/polym14061222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/09/2022] [Accepted: 03/14/2022] [Indexed: 12/13/2022] Open
Abstract
The primary goal of this study is to develop and analyze 3D printed structures based on a well-known composite known as β-Tricalcium Phosphate (TCP)– polylactic acid (PLA). There are some interesting aspects of this study. First, we developed 3D printable TCP–PLA composite filaments in-house, with high reproducibility, by a one-step process method using a single screw extruder. Second, we explored the physicochemical properties of the developed TCP–PLA composite filaments. Third, we investigated the effect of an FDM-based nozzle temperature of 190 °C, 200 °C, 210 °C, and 220 °C on the composite’s crystallinity and rheological and mechanical properties. Results confirmed the successful development of constant-diameter TCP–PLA composite filaments with a homogeneous distribution of TCP particles in the PLA matrix. We observed that a higher nozzle temperature in the FDM process increased the crystallinity of the printed PLA and TCP–PLA structures. As a result, it also helped to enhance the mechanical properties of the printed structures. The rheological studies were performed in the same temperature range used in the actual FDM process, and results showed an improvement in rheological properties at higher nozzle temperatures. The bare polymer and the composite polymer-ceramic melts exhibited lower viscosity and less rigidity at higher nozzle temperatures, which resulted in enhancing the polymer melt flowability and interlayer bonding between the printed layers. Overall, our results confirmed that 3D printable TCP–PLA filaments could be made in-house, and optimization of the nozzle temperature is essential to developing 3D printed composite parts with favorable mechanical properties.
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Affiliation(s)
- Karim Elhattab
- Department of Mechanical, Industrial & Manufacturing Engineering, The University of Toledo, Toledo, OH 43606, USA;
- Correspondence:
| | - Sarit B. Bhaduri
- Department of Mechanical, Industrial & Manufacturing Engineering, The University of Toledo, Toledo, OH 43606, USA;
- EEC Division, Directorate of Engineering, The National Science Foundation, Alexandria, VA 22314, USA
| | - Prabaha Sikder
- Department of Mechanical Engineering, Cleveland State University, Cleveland, OH 44115, USA;
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5
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Biodegradable polymeric conduits: Platform materials for guided nerve regeneration and vascular tissue engineering. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.103014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Wang Q, Ji S, Li S, Zhou X, Yin J, Liu P, Shi W, Wu M, Shen L. Electrospinning visible light response Bi2MoO6/Ag3PO4 composite photocatalytic nanofibers with enhanced photocatalytic and antibacterial activity. APPLIED SURFACE SCIENCE 2021; 569:150955. [DOI: 10.1016/j.apsusc.2021.150955] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
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Heydari P, Zargar Kharazi A, Asgary S, Parham S. Comparing the wound healing effect of a controlled release wound dressing containing curcumin/ciprofloxacin and simvastatin/ciprofloxacin in a rat model: A preclinical study. J Biomed Mater Res A 2021; 110:341-352. [PMID: 34378857 DOI: 10.1002/jbm.a.37292] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 06/25/2021] [Accepted: 07/29/2021] [Indexed: 12/19/2022]
Abstract
Inflammation and infection are two main factors predisposing a wound to become a chronic one. Degradable wound dressings involving the controlled release of suitable drugs at the ulcer site are one of the solutions to make wounds healing progress smoothly and rapidly. In this research, biodegradable dressings made of polyglycerol sebacate/polycaprolactone (PGS/PCL) containing curcumin/ciprofloxacin (CUR/CIP) and simvastatin/ciprofloxacin (SIM/CIP) were prepared by using the coaxial electrospinning method. Transmission electron microscopy for uniform core/shell structure, swelling ratio, and drug release pattern of the wound dressings were evaluated. At the in vivo study, histometric, histopathologic, and collagen expression study was performed. The PGS/PCL samples containing SIM/CIP showed a burst release pattern of CIP with a delay in the release of SIM; meanwhile, in the samples containing CUR/CIP, both drugs showed a burst release behavior. No cytotoxicity response was observed in the study groups. The in vivo study showed that wound closure was almost completed only in the SIM/CIP group after 14 days. After 14 days, in the wound treated with SIM/CIP dressing, the amount of collagen deposition and angiogenesis was higher than that of the others. These results clearly showed the effect of SIM/CIP on the improvement of the wound healing efficiency in the long term (14 days) and the effect of CUR/CIP on wound contraction in the short term (4 day). It seems, therefore, that the use of SIM and CUR simultaneously in a wound dressing could cause a synergistic effect in the wound repair.
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Affiliation(s)
- Parisa Heydari
- Biomaterials Nanotechnology and Tissue Engineering Faculty, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Anosheh Zargar Kharazi
- Biomaterials Nanotechnology and Tissue Engineering Faculty, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.,Applied physiology research center, Isfahan university of medical sciences, Isfahan, Iran
| | - Seddigheh Asgary
- Isfahan Cardiovascular Research Center, Cardiovascular Research institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shokoh Parham
- Biomaterials Nanotechnology and Tissue Engineering Faculty, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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Biodegradable Stent with mTOR Inhibitor-Eluting Reduces Progression of Ureteral Stricture. Int J Mol Sci 2021; 22:ijms22115664. [PMID: 34073521 PMCID: PMC8199408 DOI: 10.3390/ijms22115664] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/12/2021] [Accepted: 05/20/2021] [Indexed: 12/30/2022] Open
Abstract
In this study, we investigated the effect of mTOR inhibitor (mTORi) drug-eluting biodegradable stent (DE stent), a putative restenosis-inhibiting device for coronary artery, on thermal-injury-related ureteral stricture in rabbits. In vitro evaluation confirmed the dose-dependent effect of mTORi, i.e., rapamycin, on fibrotic markers in ureteral component cell lines. Upper ureteral fibrosis was induced by ureteral thermal injury in open surgery, which was followed by insertion of biodegradable stents, with or without rapamycin drug-eluting. Immunohistochemistry and Western blotting were performed 4 weeks after the operation to determine gross anatomy changes, collagen deposition, expression of epithelial–mesenchymal transition markers, including Smad, α-SMA, and SNAI 1. Ureteral thermal injury resulted in severe ipsilateral hydronephrosis. The levels of type III collagen, Smad, α-SMA, and SNAI 1 were increased 28 days after ureteral thermal injury. Treatment with mTORi-eluting biodegradable stents significantly attenuated thermal injury-induced urinary tract obstruction and reduced the level of fibrosis proteins, i.e., type III collagen. TGF-β and EMT signaling pathway markers, Smad and SNAI 1, were significantly modified in DE stent-treated thermal-injury-related ureteral stricture rabbits. These results suggested that intra-ureteral administration of rapamycin by DE stent provides modification of fibrosis signaling pathway, and inhibiting mTOR may result in fibrotic process change.
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Wang N, Huang Z, Wang S, Lang M, Zhang X. Minocycline hydrochloride loaded mPEG-PCLA membranes: Preparation and in vitro evaluation for periodontitis therapy. J BIOACT COMPAT POL 2021. [DOI: 10.1177/0883911521992795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This study was aimed at alleviating shortcomings in the treatment of periodontitis by preparation of a biopolymer membrane loaded with minocycline hydrochloride (MH) inserted into periodontal pockets to treat infections. Monomethoxy-poly (ethylene glycol)-poly (ε-caprolactone-co-L-lactide) (mPEG-PCLA) is a biocompatible and biodegradable amphiphilic block copolymer. It, therefore, has attracted considerable attention in drug delivery systems and periodontal treatment. We chose it as a membrane material for MH-drug loading. The MH-loaded membranes were prepared by the solvent casting technique with the content of 5, 8 and 10 wt.%, respectively. Fourier transform infrared spectra (FTIR) revealed no interaction between MH and polymer. The drug-loaded membrane surface morphology was investigated by scanning electron microscopy (SEM). In vitro release studies showed that the initial drug release exceeded 40% within 24 h, followed by a sustained release for up to 2 weeks, which would enable the therapeutic level to maintain over a longer time. The antibacterial activity studies in vitro demonstrated a positive effect on the periodontal pathogen. MH drug-loaded membranes have no adverse effect on the growth of periodontal ligament fibroblasts in the MTT test. The study suggests that mPEG-PCLA membranes containing MH are a potential antibacterial drug delivery system for local treatment of periodontitis.
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Affiliation(s)
- Ningtao Wang
- Department of 2nd Dental Center, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - Zhengmei Huang
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shenchun Wang
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Meidong Lang
- School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Xiuyin Zhang
- Department of Prosthodontics, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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10
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Kallidonis P, Adamou C, Castillo SV, Liourdi D, Liatsikos E, Lange D. Drug-delivering devices in the urinary tract: A systematic review. Arab J Urol 2021; 19:191-204. [PMID: 34104496 PMCID: PMC8158184 DOI: 10.1080/2090598x.2021.1885948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Objective : To systematically review the use of drug-eluting stents (DES) and drug-coated balloons (DCB) in urology. Materials and Methods The systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. PubMed, Scopus, Web of science and Cochrane Library online databases were searched in February 2019. Experimental and clinical studies, which included the placement of a DES or dilatation with DCB for investigating their potential use in the urinary tract for the management of ureteric or urethral pathologies, were included. The primary endpoint was to evaluate the current use of DES and DCB in urology. Results A total of 29 articles were included in the systematic review. A total of 10 studies tested DES or DCB containing anti-proliferative agents (paclitaxel, zotarolimus, sirolimus, halofugione). Antibiotic agent-containing DES were tested in nine studies (triclosan, quinolones, teicoplanin, nitrofurantoin, silver sulfadiazine). A total of eight studies investigated the release of anti-inflammatory agents by DES (ketorolac, indomethacin, EW-7197). Another group studied heparin-eluting stents. Conclusion Despite the inconclusive outcomes of the three randomised controlled trials, drug-coated/eluting devices constitute a promising field in urology for the prevention of complications associated with conventional stents including pain and encrustation. Pre-clinical in vitro and in vivo studies have shown their ability to mitigate inflammation, inhibit re-stenosis and improve pain as indicated by declined use of anti-inflammatory drugs. Abbreviations: DES: drug-eluting stents; DCB: drug-coated balloons; DCS: drug-coated stents; HF: halofungione; MCP-1: monocyte chemoattractant protein 1; PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses; PTCA: percutaneous transluminal coronary angioplasty; RANTES: regulated on activation, normal T-cell expressed and secreted; RCT: randomised controlled trial; USSQ, Ureteric Stent Symptoms Questionaire.
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Affiliation(s)
- Panagiotis Kallidonis
- Department of Urology, University Hospital of Patras, Patras, Greece.,Endourological Society, Ureteral Stent Research Group
| | | | | | | | | | - Dirk Lange
- Endourological Society, Ureteral Stent Research Group.,Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
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Chang CT, Chen YT, Hsieh YK, Girsang SP, Wang RS, Chang YC, Shen SH, Shen CR, Lin TP, Wan D, Wang J. Dual-functional antibiofilm polymer composite for biodegradable medical devices. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111985. [PMID: 33812613 DOI: 10.1016/j.msec.2021.111985] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/08/2021] [Accepted: 02/18/2021] [Indexed: 12/17/2022]
Abstract
Urinary tract infections (UTI) represent one of the most common problem within the urological disorders, and it is mainly caused by biofilm formation which leads to bacterial infection. Anti-adhesion and antibacterial agents are two primary mechanisms to prevent biofilm formation; however, current strategies are insufficiently effective. In this study, we developed an effective antibiofilm biodegradable polymer with high biocompatibility. Here we embedded silver nanoparticles (AgNPs) in poly(glycerol sebacate) acrylate (PGSA) followed by superhydrophilic modification on the polymer surfaces. The modified surfaces were characterized using SEM, AFM and contact angle measurements. This anti-adhesive surface prevented the adhesion of E. coli and limited the biofilm coverage percentage to less than 3% in 24 h. In the in vitro degradation, the long-term antibiofilm performance was evaluated in Nowatzki-Stoodley artificial urine (NSAU). The surface modified AgNPs embedded PGSA (sPGSA-AgNPs) was able to effectively inhibit the formation of biofilm by reducing the biofilm coverage to less than 0.01%, and it also showed low cytotoxicity with human bladder carcinoma cell. With the effective antibiofilm, biocompatibility and biodegradability, it is possible to be applied in urological devices to ameliorate the situation of UTIs.
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Affiliation(s)
- Chia-Teng Chang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Yi-Ting Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Yi-Kong Hsieh
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Samuel Pratama Girsang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Ryan S Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | | | - Shu-Huei Shen
- Department of Urology, Taipei Veterans General Hospital, Taipei 11217, Taiwan; School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan
| | - Claire R Shen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Tzu-Ping Lin
- Department of Radiology, Taipei Veterans General Hospital, Taipei 11217, Taiwan; School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan
| | - Dehui Wan
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Jane Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan.
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12
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Zhang Y, Qi J, Chen H, Xiong C. Amphiphilic diblock copolymers inhibit the formation of encrustation on the surface of biodegradable ureteral stents in vitro and in vivo. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Liu Y, Bai X, A L. In vitro and in vivo evaluation of a ciprofloxacin delivery system based on poly(DLLA-co-GA-co-CL) for treatment of chronic osteomyelitis. J Appl Biomater Funct Mater 2020; 18:2280800020975727. [PMID: 33270476 DOI: 10.1177/2280800020975727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Chronic osteomyelitis causes serious injury to patients. Antibiotic delivery systems based on poly(lactide-co-glycolide) (PLGA) have great potential for treatment of chronic osteomyelitis. However, PLGA has a glass-transition temperature that is higher than physiological temperatures, resulting in a lack of flexibility for implantation into the bone marrow cavity. As an alternative, poly(d, l-lactide-co-glycolide-co-ε-caprolactone) (PLGC) presents good flexibility due to the introduction of poly(ε-caprolactone) segments. To develop a new strategy for treatment of chronic osteomyelitis, a ciprofloxacin delivery system was prepared using PLGC as carriers, the antibacterial effects of which were evaluated both in vivo and in vitro. The in vitro release behavior showed that the average release reached 268.5 μg/days on day 33, with a cumulative release rate of 56.01%. A bacteriostatic ring, with a diameter of 26.83 ± 0.83 mm, was produced by ciprofloxacin against Staphylococcus aureus after 30 days of release via our ciprofloxacin-PLGC system. After 4 weeks of treatment in vivo, chronic-osteomyelitis-model rats had a bodyweight of 385.83 ± 17.23 g and a normal white-blood-cell count, as well as a lower number of bacterial colonies per gram of bone tissue of (10.6 ± 3.0) × 101 CFU/g. Furthermore, no inflammatory cells were observed via hematoxylin-and-eosin staining, and normal bone structure was observed via X-ray. Taken together, our findings indicate that our novel ciprofloxacin-PLGC system yielded noteworthy antibacterial effects both in vitro and in vivo, suggesting that it may be useful for treating patients with chronic osteomyelitis.
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Affiliation(s)
- Yixiu Liu
- Department of Orthopaedics, The Central Hospital Affiliated to Shenyang Medical College, Shenyang, China
| | - Xizhuang Bai
- Department of Sports Medicine and Joint Surgery, The People's Hospital of Liaoning Province, Shenyang, China
| | - Liang A
- Department of Orthopaedics, The Central Hospital Affiliated to Shenyang Medical College, Shenyang, China
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14
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Electrospun Janus nanofibers loaded with a drug and inorganic nanoparticles as an effective antibacterial wound dressing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110805. [DOI: 10.1016/j.msec.2020.110805] [Citation(s) in RCA: 140] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/24/2020] [Accepted: 03/02/2020] [Indexed: 01/19/2023]
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15
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Electrochemical and Biological Performance of Biodegradable Polymer Coatings on Ti6Al7Nb Alloy. MATERIALS 2020; 13:ma13071758. [PMID: 32283745 PMCID: PMC7178650 DOI: 10.3390/ma13071758] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/25/2020] [Accepted: 04/03/2020] [Indexed: 11/17/2022]
Abstract
The inhibition of the corrosion of metal implants is still a challenge. This study aimed to increase the corrosion resistance of Ti6Al7Nb alloy implants through surface modification, including grinding, sandblasting, and anodic oxidation followed by the deposition of a polymer coating. The aim of the work was to determine the influence of biodegradable polymer coatings on the physico-chemical properties of a Ti6Al7Nb alloy used for short-term implants. Biodegradable coatings prepared from poly(glycolide-caprolactone) (P(GCap)), poly(glycolide ε-caprolactone-lactide) (P(GCapL)), and poly(lactide-glycolide) (PLGA) were applied in the studies. The dip-coating method with three cycles of dipping was applied. Corrosion resistance was assessed on the basis of potentiodynamic studies. The studies were carried out on samples after 30, 60, and 90 days of exposure to Ringer's solution. Surface topography, wettability, and cytotoxicity studies were also carried out. The degradation process of the base material was evaluated on the basis of the mass density of the metal ions released to the solution. The results indicated the influence of the coating type on corrosion resistance. In addition, a beneficial effect of the polymer coating on the reduction of the density of the released metal ions was found, as compared to the samples without polymer coatings. The obtained results provide basic knowledge for the development of polymer coatings enriched with an active substance. The presence of ciprofloxacin in the coating did not reduce the corrosion resistance of the metal substrate. Moreover, the cytotoxicity test using the extract dilution method demonstrated that the implants' coatings are promising for further in vitro and in vivo studies.
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Hayat U, Raza A, Wang HJ, Wang JY. Preparation of ciprofloxacin loaded zein conduits with good mechanical properties and antibacterial activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110766. [PMID: 32279795 DOI: 10.1016/j.msec.2020.110766] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 01/18/2020] [Accepted: 02/18/2020] [Indexed: 02/06/2023]
Abstract
Conduit scaffolds have potential applications in tissue engineering as nerve conduits, urological stent and blood vessel graft. Zein is a well-reported biopolymer in tissue engineering and drug delivery systems. Herein, we prepared ciprofloxacin loaded zein conduits using a facile rolling method. Zein conduits (ZCs) were evaluated for physical structure, porosity, bending stiffness, degradation, drug release, in vitro and in vivo antibacterial efficacy and cells toxicity. ZCs showed porous structure with porosity > 60 % and good mechanical strength with bending stiffness of 28.54 N.mm2. Slow enzymatic degradation (87 % in 30 days) was also observed for ZCs. Slow release of ciprofloxacin up to 42 days was observed that could assure prevention of post-implantation infection. In vitro and in vivo antibacterial study verified the short-time and long-time antibacterial efficacy of zein conduits on Gram-positive and Gram-negative bacteria. Live/dead measurement and CCK-8 assay on L929 cells demonstrated good cell compatibility for all zein conduits (>90 % cell viability and cells proliferation in 3 days). Overall, the rolling method could be exploited for preparation of ciprofloxacin loaded zein conduits, which had the potential for tissue engineering applications.
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Affiliation(s)
- Uzma Hayat
- School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Ali Raza
- School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Hua-Jie Wang
- School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; JiaxingYaojiao Medical Device Co. Ltd., 321 Jiachuang Road, Jiaxing 314032, China.
| | - Jin-Ye Wang
- School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; JiaxingYaojiao Medical Device Co. Ltd., 321 Jiachuang Road, Jiaxing 314032, China.
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18
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Fernández J, Ribeiro IA, Martin V, Martija OL, Zuza E, Bettencourt AF, Sarasua JR. Release mechanisms of urinary tract antibiotics when mixed with bioabsorbable polyesters. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:529-538. [DOI: 10.1016/j.msec.2018.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/23/2018] [Accepted: 08/05/2018] [Indexed: 01/24/2023]
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Heydari P, Varshosaz J, Zargar Kharazi A, Karbasi S. Preparation and evaluation of poly glycerol sebacate/poly hydroxy butyrate core-shell electrospun nanofibers with sequentially release of ciprofloxacin and simvastatin in wound dressings. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4286] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Parisa Heydari
- Biomaterials Nanotechnology and Tissue Engineering Faculty, School of Advanced Medical Technology; Isfahan University of Medical Sciences; Isfahan Iran
| | - Jaleh Varshosaz
- School of Pharmacy and Pharmaceutical Sciences; Isfahan University of Medical Sciences; Isfahan Iran
| | - Anousheh Zargar Kharazi
- Biomaterials Nanotechnology and Tissue Engineering Faculty, School of Advanced Medical Technology; Isfahan University of Medical Sciences; Isfahan Iran
| | - Saeed Karbasi
- Biomaterials Nanotechnology and Tissue Engineering Faculty, School of Advanced Medical Technology; Isfahan University of Medical Sciences; Isfahan Iran
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Hu B, Wang W, Wang Y, Yang Y, Xu L, Li S. Degradation of glutamate-based organogels for biodegradable implants: In vitro study and in vivo observation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 82:80-90. [DOI: 10.1016/j.msec.2017.08.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/15/2017] [Accepted: 08/16/2017] [Indexed: 11/30/2022]
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Arndt P, Leistner ND, Neuss S, Kaltbeitzel D, Brook GA, Grosse J. Artificial urine and FBS supplemented media in cytocompatibility assays for PLGA-PEG-based intravesical devices using the urothelium cell line UROtsa. J Biomed Mater Res B Appl Biomater 2017; 106:2140-2147. [DOI: 10.1002/jbm.b.34021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 09/17/2017] [Accepted: 09/24/2017] [Indexed: 12/16/2022]
Affiliation(s)
- P. Arndt
- Department of Urology; RWTH Aachen University, Pauwelsstraße 30; 52074 Aachen Germany
| | - N. D. Leistner
- Department of Neuro-Urology; University Clinic Friedrich-Wilhelms-University Bonn and Neurologic Rehabilitation Centre Godeshöhe; Bonn Germany
| | - S. Neuss
- Helmholts Institute for Biomedical Engineering; Biointerface Group, RWTH Aachen University; Aachen Germany
- Institute of Pathology, RWTH Aachen University; Aachen Germany
| | - D. Kaltbeitzel
- Institute of Plastics Processing, RWTH Aachen University; Aachen Germany
| | - G. A. Brook
- Institute of Neuropathology, RWTH Aachen University; Aachen Germany
| | - J. Grosse
- Department of Urology; RWTH Aachen University, Pauwelsstraße 30; 52074 Aachen Germany
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Zhang S, Bi Y, Li J, Wang Z, Yan J, Song J, Sheng H, Guo H, Li Y. Biodegradation behavior of magnesium and ZK60 alloy in artificial urine and rat models. Bioact Mater 2017; 2:53-62. [PMID: 29744412 PMCID: PMC5935043 DOI: 10.1016/j.bioactmat.2017.03.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 03/24/2017] [Accepted: 03/25/2017] [Indexed: 11/23/2022] Open
Abstract
In this work, the biodegradable and histocompatibility properties of pure Mg and ZK60 alloy were investigated as new temporary implants for urinary applications. The corrosion mechanism in artificial urine was proposed using electrochemical impedance spectroscopy and potentiodynamic polarization tests. The corrosion potential of pure magnesium and ZK60 alloy were −1820 and −1561 mV, respectively, and the corrosion current densities were 59.66 ± 6.41 and 41.94 ± 0.53 μA cm−2, respectively. The in vitro degradation rates for pure Mg and ZK60 alloy in artificial urine were 0.382 and 1.023 mm/y, respectively, determined from immersion tests. The ZK60 alloy degraded faster than the pure Mg in both artificial urine and in rat bladders (the implants of both samples are ø 3 mm × 5 mm). Histocompatibility evaluations showed good histocompatibility for the pure Mg and ZK60 alloy during the 3 weeks post-implantation in rat bladders, and no harm was observed in the bladder, liver and kidney tissues. The results provide key information on the degradation properties and corrosion mechanism of pure Mg and ZK60 alloy in the urinary system. ZK60 obtained loose corrosion product layer with poor corrosion resistance in AU. ZK60 showed a faster degradation rate than Mg in artificial urine and bladder of rat. Mg and ZK60 alloy showed good histocompatibility for the bladder model of rat.
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Affiliation(s)
- Shiying Zhang
- Department of Urology, Air Force General Hospital, Beijing, China.,Key Laboratory of Aerospace Advanced Materials and Performance (Beihang University), Ministry of Education, Beijing 100191, China
| | - Yanze Bi
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China.,Key Laboratory of Aerospace Advanced Materials and Performance (Beihang University), Ministry of Education, Beijing 100191, China
| | - Jianye Li
- Department of Urology, Air Force General Hospital, Beijing, China
| | - Zhenguo Wang
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China.,Key Laboratory of Aerospace Advanced Materials and Performance (Beihang University), Ministry of Education, Beijing 100191, China
| | - Jingmin Yan
- Department of Urology, Air Force General Hospital, Beijing, China
| | - Jiawang Song
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China.,Key Laboratory of Aerospace Advanced Materials and Performance (Beihang University), Ministry of Education, Beijing 100191, China
| | - Haibo Sheng
- Department of Urology, Air Force General Hospital, Beijing, China
| | - Heqing Guo
- Department of Urology, Air Force General Hospital, Beijing, China
| | - Yan Li
- School of Materials Science and Engineering, Beihang University, Beijing 100191, China.,Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology (Beihang University), Beijing 100191, China
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