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Deng X, Gould ML, Katare RG, Ali MA. Melt-extruded biocompatible surgical sutures loaded with microspheres designed for wound healing. Biomed Mater 2024; 19:055007. [PMID: 38917838 DOI: 10.1088/1748-605x/ad5baa] [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: 01/23/2024] [Accepted: 06/25/2024] [Indexed: 06/27/2024]
Abstract
Sutures are commonly used in surgical procedures and have immense potential for direct drug delivery into the wound site. However, incorporating active pharmaceutical ingredients into the sutures has always been challenging as their mechanical strength deteriorates. This study proposes a new method to produce microspheres-embedded surgical sutures that offer adequate mechanical properties for effective wound healing applications. The study used curcumin, a bioactive compound found in turmeric, as a model drug due to its anti-inflammatory, antioxidant, and anti-bacterial properties, which make it an ideal candidate for a surgical suture drug delivery system. Curcumin-loaded microspheres were produced using the emulsion solvent evaporation method with polyvinyl alcohol (PVA) as the aqueous phase. The microspheres' particle sizes, drug loading (DL) capacity, and encapsulation efficiency (EE) were investigated. Microspheres were melt-extruded with polycaprolactone and polyethylene glycol via a 3D bioplotter, followed by a drawing process to optimise the mechanical strength. The sutures' thermal, physiochemical, and mechanical properties were investigated, and the drug delivery and biocompatibility were evaluated. The results showed that increasing the aqueous phase concentration resulted in smaller particle sizes and improved DL capacity and EE. However, if PVA was used at 3% w/v or below, it prevented aggregate formation after lyophilisation, and the average particle size was found to be 34.32 ± 12.82 μm. The sutures produced with the addition of microspheres had a diameter of 0.38 ± 0.02 mm, a smooth surface, minimal tissue drag, and proper tensile strength. Furthermore, due to the encapsulated drug-polymer structure, the sutures exhibited a prolonged and sustained drug release of up to 14 d. Microsphere-loaded sutures demonstrated non-toxicity and accelerated wound healing in thein vitrostudies. We anticipate that the microsphere-loaded sutures will serve as an excellent biomedical device for facilitating wound healing.
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Affiliation(s)
- X Deng
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - M L Gould
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - R G Katare
- Department of Physiology, HeartOtagoy, University of Otago, Dunedin, New Zealand
| | - M A Ali
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
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2
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Chug M, Crutchfield N, Garren M, Handa H, Brisbois EJ. Engineering Nitric Oxide-Releasing Antimicrobial Dental Coating for Targeted Gingival Therapy. ACS APPLIED BIO MATERIALS 2024; 7:2993-3004. [PMID: 38593411 PMCID: PMC11110066 DOI: 10.1021/acsabm.4c00051] [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: 01/12/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/11/2024]
Abstract
Bacterial biofilms play a central role in the development and progression of periodontitis, a chronic inflammatory condition that affects the oral cavity. One solution to current treatment constraints is using nitric oxide (NO)─with inherent antimicrobial properties. In this study, an antimicrobial coating is developed from the NO donor S-nitroso-N-acetylpenicillamine (SNAP) embedded within polyethylene glycol (PEG) to prevent periodontitis. The SNAP-PEG coating design enabled a controlled NO release, achieving tunable NO levels for more than 24 h. Testing the SNAP-PEG composite on dental floss showed its effectiveness as a uniform and bioactive coating. The coating exhibited antibacterial properties against Streptococcus mutans and Escherichia coli, with inhibition zones measuring up to 7.50 ± 0.28 and 14.80 ± 0.46 mm2, respectively. Furthermore, SNAP-PEG coating materials were found to be stable when stored at room temperature, with 93.65% of SNAP remaining after 28 d. The coatings were biocompatible against HGF and hFOB 1.19 cells through a 24 h controlled release study. This study presents a facile method to utilize controlled NO release with dental antimicrobial coatings comprising SNAP-PEG. This coating can be easily applied to various substrates, providing a user-friendly approach for targeted self-care in managing gingival infections associated with periodontitis.
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Affiliation(s)
- Manjyot
Kaur Chug
- School of Chemical, Materials,
and Biomedical Engineering, University of
Georgia, 302 E Campus
Rd, Athens, Georgia 30605, United States
| | - Natalie Crutchfield
- School of Chemical, Materials,
and Biomedical Engineering, University of
Georgia, 302 E Campus
Rd, Athens, Georgia 30605, United States
| | - Mark Garren
- School of Chemical, Materials,
and Biomedical Engineering, University of
Georgia, 302 E Campus
Rd, Athens, Georgia 30605, United States
| | - Hitesh Handa
- School of Chemical, Materials,
and Biomedical Engineering, University of
Georgia, 302 E Campus
Rd, Athens, Georgia 30605, United States
| | - Elizabeth J. Brisbois
- School of Chemical, Materials,
and Biomedical Engineering, University of
Georgia, 302 E Campus
Rd, Athens, Georgia 30605, United States
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3
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Teno J, Pardo-Figuerez M, Evtoski Z, Prieto C, Cabedo L, Lagaron JM. Development of Ciprofloxacin-Loaded Electrospun Yarns of Application Interest as Antimicrobial Surgical Suture Materials. Pharmaceutics 2024; 16:220. [PMID: 38399274 PMCID: PMC10891768 DOI: 10.3390/pharmaceutics16020220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
Surgical site infections (SSI) occur very frequently during post-operative procedures and are often treated with oral antibiotics, which may cause some side effects. This type of infection could be avoided by encapsulating antimicrobial/anti-inflammatory drugs within the surgical suture materials so that they can more efficiently act on the site of action during wound closure, avoiding post-operative bacterial infection and spreading. This work was aimed at developing novel electrospun bio-based anti-infective fibre-based yarns as novel suture materials for preventing surgical site infections. For this, yarns based on flying intertwined microfibres (1.95 ± 0.22 µm) were fabricated in situ during the electrospinning process using a specially designed yarn collector. The electrospun yarn sutures (diameter 300-500 µm) were made of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with different contents of 3HV units and contained ciprofloxacin hydrochloride (CPX) as the antimicrobial active pharmaceutical ingredient (API). The yarns were then analysed by scanning electron microscopy, Fourier transform infrared spectroscopy, wide-angle X-ray scattering, differential scanning calorimetry, and in vitro drug release. The yarns were also analysed in terms of antimicrobial and mechanical properties. The material characterization indicated that the varying polymer molecular architecture affected the attained polymer crystallinity, which was correlated with the different drug-eluting profiles. Moreover, the materials exhibited the inherent stiff behaviour of PHBV, which was further enhanced by the API. Lastly, all the yarn sutures presented antimicrobial properties for a time release of 5 days against both Gram-positive and Gram-negative pathogenic bacteria. The results highlight the potential of the developed antimicrobial electrospun yarns in this study as potential innovative suture materials to prevent surgical infections.
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Affiliation(s)
- Jorge Teno
- R&D Department, Bioinicia S.L., 46980 Paterna, Spain
| | - Maria Pardo-Figuerez
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), 46980 Paterna, Spain; (M.P.-F.); (Z.E.); (C.P.)
| | - Zoran Evtoski
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), 46980 Paterna, Spain; (M.P.-F.); (Z.E.); (C.P.)
| | - Cristina Prieto
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), 46980 Paterna, Spain; (M.P.-F.); (Z.E.); (C.P.)
| | - Luis Cabedo
- Polymers and Advanced Materials Group (PIMA), School of Technology and Experimental Sciences, Universitat Jaume I (UJI), 12006 Castellón, Spain;
| | - Jose M. Lagaron
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), 46980 Paterna, Spain; (M.P.-F.); (Z.E.); (C.P.)
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4
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Liu P, Liu X, Yang L, Qian Y, Lu Q, Shi A, Wei S, Zhang X, Lv Y, Xiang J. Enhanced hemocompatibility and rapid magnetic anastomosis of electrospun small-diameter artificial vascular grafts. Front Bioeng Biotechnol 2024; 12:1331078. [PMID: 38328445 PMCID: PMC10847591 DOI: 10.3389/fbioe.2024.1331078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/15/2024] [Indexed: 02/09/2024] Open
Abstract
Background: Small-diameter (<6 mm) artificial vascular grafts (AVGs) are urgently required in vessel reconstructive surgery but constrained by suboptimal hemocompatibility and the complexity of anastomotic procedures. This study introduces coaxial electrospinning and magnetic anastomosis techniques to improve graft performance. Methods: Bilayer poly(lactide-co-caprolactone) (PLCL) grafts were fabricated by coaxial electrospinning to encapsulate heparin in the inner layer for anticoagulation. Magnetic rings were embedded at both ends of the nanofiber conduit to construct a magnetic anastomosis small-diameter AVG. Material properties were characterized by micromorphology, fourier transform infrared (FTIR) spectra, mechanical tests, in vitro heparin release and hemocompatibility. In vivo performance was evaluated in a rabbit model of inferior vena cava replacement. Results: Coaxial electrospinning produced PLCL/heparin grafts with sustained heparin release, lower platelet adhesion, prolonged clotting times, higher Young's modulus and tensile strength versus PLCL grafts. Magnetic anastomosis was significantly faster than suturing (3.65 ± 0.83 vs. 20.32 ± 3.45 min, p < 0.001) and with higher success rate (100% vs. 80%). Furthermore, magnetic AVG had higher short-term patency (2 days: 100% vs. 60%; 7 days: 40% vs. 0%) but similar long-term occlusion as sutured grafts. Conclusion: Coaxial electrospinning improved hemocompatibility and magnetic anastomosis enhanced implantability of small-diameter AVG. Short-term patency was excellent, but further optimization of anticoagulation is needed for long-term patency. This combinatorial approach holds promise for vascular graft engineering.
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Affiliation(s)
- Peng Liu
- Center for Regenerative and Reconstructive Medicine, Med-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Xin Liu
- Department of Graduate School, Xi’an Medical University, Xi’an, Shaanxi, China
| | - Lifei Yang
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yerong Qian
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Qiang Lu
- Department of Geriatric Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Aihua Shi
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Shasha Wei
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Xufeng Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Yi Lv
- Center for Regenerative and Reconstructive Medicine, Med-X Institute, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - Junxi Xiang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
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5
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Khalid GM, Billa N. Drug-Eluting Sutures by Hot-Melt Extrusion: Current Trends and Future Potentials. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7245. [PMID: 38005174 PMCID: PMC10672932 DOI: 10.3390/ma16227245] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/06/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023]
Abstract
Surgical site infections (SSIs) may result from surgical procedures requiring a secondary administration of drugs at site or systemically in treating the infection. Drug-eluting sutures containing antimicrobial agents symbolise a latent strategy that precludes a secondary drug administration. It also offers the possibility of delivering a myriad of therapeutic agents to a localised wound site to effect analgesia, anti-inflammation, or the deployment of proteins useful for wound healing. Further, the use of biodegradable drug-eluting sutures eliminates the need for implanting foreign material into the wound, which needs to be removed after healing. In this review, we expound on recent trends in the manufacture of drug-eluting sutures with a focus on the hot-melt extrusion (HME) technique. HME provides a solvent-free, continuous one-step manufacturing conduit for drug-eluting sutures, hence, there is no drying step, which can be detrimental to the drug or suture threads and, thus, environmentally friendly. There is the possibility of combining the technology with additive manufacturing platforms to generate personalised drug-loaded implantable devices through prototyping and scalability. The review also highlights key material requirements for fabricating drug-eluting sutures by HME, as well as quality attributes. Finally, a preview of emerging drug-eluting sutures and advocacy for harmonisation of quality assurance by regulatory authorities that permits quality evaluation of novelty sutures is presented.
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Affiliation(s)
- Garba M. Khalid
- Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK;
- FabRx Ltd., Henwood House, Henwood, Asford TN24 8DH, UK
| | - Nashiru Billa
- Pharmaceutical Sciences Department, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
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6
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Han H, Tang L, Li Y, Li Y, Bi M, Wang J, Wang F, Wang L, Mao J. A multifunctional surgical suture with electroactivity assisted by oligochitosan/gelatin-tannic acid for promoting skin wound healing and controlling scar proliferation. Carbohydr Polym 2023; 320:121236. [PMID: 37659821 DOI: 10.1016/j.carbpol.2023.121236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/23/2023] [Accepted: 07/25/2023] [Indexed: 09/04/2023]
Abstract
Surgical wound closure is accomplished most frequently with sutures, optimally proceeding rapidly and without complication. However, surgical sutures can trigger foreign body reactions and incite abnormal collagen deposition. Sustained inflammation can result in abnormal wound healing with hypertrophic scar formation. Therefore, evolution of suture material to inhibit inflammation and scar formation is of great clinical significance. In the present study, commercial 3-0 PPDO [poly(p-dioxanone)] suture was used as the base material and modified by adding two layers: a drug-loaded layer and an electroactive layer. The former layer was curcumin (Cur) encapsulated by PLGA [poly (lactic-co-glycolic acid)] and the latter layer was composed of oligochitosan-gelatin/tannic acid/polypyrrole (OCS-GE/TA/PPy). The multifunctional sutures, named S@LC@CGTP, had desirable sustained-drug release properties in vitro where Cur could be released for 8 days due to the action of PLGA. The three-dimensional network structure of OCS-GE/TA ensured S@LC@CGTP against surface cracking and maintained electrical. Furthermore, using an in vivo experiment, S@LC@CGTP could attenuate inflammation and promote scar-free wound healing according to suppression of infiltrating inflammatory cells, down-regulation of TGF-β1 and collagen type I expression, and improved collagen arrangement. Cumulatively, we indicated that S@LC@CGTP suture material has great potential to facilitate optimal, nearly scarless healing of surgical incisions.
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Affiliation(s)
- Hui Han
- Thyroid Surgery Department, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Liqin Tang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China
| | - Yan Li
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China
| | - Yong Li
- Thyroid Surgery Department, General Surgery Center, The First Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Ming Bi
- General department, Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, China.
| | - Jun Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China
| | - Fujun Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China; Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China
| | - Lu Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China; Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China
| | - Jifu Mao
- Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China; Key Laboratory of Textile Industry for Biomedical Textile Materials and Technology, Donghua University, Shanghai 201620, China; Shanghai Frontiers Science Center of Advanced Textiles, Donghua University, Shanghai 201620, China.
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7
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Li Y, Meng Q, Chen S, Ling P, Kuss MA, Duan B, Wu S. Advances, challenges, and prospects for surgical suture materials. Acta Biomater 2023; 168:78-112. [PMID: 37516417 DOI: 10.1016/j.actbio.2023.07.041] [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: 03/20/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
As one of the long-established and necessary medical devices, surgical sutures play an essentially important role in the closing and healing of damaged tissues and organs postoperatively. The recent advances in multiple disciplines, like materials science, engineering technology, and biomedicine, have facilitated the generation of various innovative surgical sutures with humanization and multi-functionalization. For instance, the application of numerous absorbable materials is assuredly a marvelous progression in terms of surgical sutures. Moreover, some fantastic results from recent laboratory research cannot be ignored either, ranging from the fiber generation to the suture structure, as well as the suture modification, functionalization, and even intellectualization. In this review, the suture materials, including natural or synthetic polymers, absorbable or non-absorbable polymers, and metal materials, were first introduced, and then their advantages and disadvantages were summarized. Then we introduced and discussed various fiber fabrication strategies for the production of surgical sutures. Noticeably, advanced nanofiber generation strategies were highlighted. This review further summarized a wide and diverse variety of suture structures and further discussed their different features. After that, we covered the advanced design and development of surgical sutures with multiple functionalizations, which mainly included surface coating technologies and direct drug-loading technologies. Meanwhile, the review highlighted some smart and intelligent sutures that can monitor the wound status in a real-time manner and provide on-demand therapies accordingly. Furthermore, some representative commercial sutures were also introduced and summarized. At the end of this review, we discussed the challenges and future prospects in the field of surgical sutures in depth. This review aims to provide a meaningful reference and guidance for the future design and fabrication of innovative surgical sutures. STATEMENT OF SIGNIFICANCE: This review article introduces the recent advances of surgical sutures, including material selection, fiber morphology, suture structure and construction, as well as suture modification, functionalization, and even intellectualization. Importantly, some innovative strategies for the construction of multifunctional sutures with predetermined biological properties are highlighted. Moreover, some important commercial suture products are systematically summarized and compared. This review also discusses the challenges and future prospects of advanced sutures in a deep manner. In all, this review is expected to arouse great interest from a broad group of readers in the fields of multifunctional biomaterials and regenerative medicine.
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Affiliation(s)
- Yiran Li
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Qi Meng
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Shaojuan Chen
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China
| | - Peixue Ling
- Shandong Academy of Pharmaceutical Science, Jinan, 250101, China
| | - Mitchell A Kuss
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Bin Duan
- Mary & Dick Holland Regenerative Medicine Program and Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Shaohua Wu
- College of Textiles & Clothing, Qingdao University, Qingdao, 266071, China; Shandong Academy of Pharmaceutical Science, Jinan, 250101, China.
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8
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Ren ZW, Wang ZY, Ding YW, Dao JW, Li HR, Ma X, Yang XY, Zhou ZQ, Liu JX, Mi CH, Gao ZC, Pei H, Wei DX. Polyhydroxyalkanoates: the natural biopolyester for future medical innovations. Biomater Sci 2023; 11:6013-6034. [PMID: 37522312 DOI: 10.1039/d3bm01043k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are a family of natural microbial biopolyesters with the same basic chemical structure and diverse side chain groups. Based on their excellent biodegradability, biocompatibility, thermoplastic properties and diversity, PHAs are highly promising medical biomaterials and elements of medical devices for applications in tissue engineering and drug delivery. However, due to the high cost of biotechnological production, most PHAs have yet to be applied in the clinic and have only been studied at laboratory scale. This review focuses on the biosynthesis, diversity, physical properties, biodegradability and biosafety of PHAs. We also discuss optimization strategies for improved microbial production of commercial PHAs via novel synthetic biology tools. Moreover, we also systematically summarize various medical devices based on PHAs and related design approaches for medical applications, including tissue repair and drug delivery. The main degradation product of PHAs, 3-hydroxybutyrate (3HB), is recognized as a new functional molecule for cancer therapy and immune regulation. Although PHAs still account for only a small percentage of medical polymers, up-and-coming novel medical PHA devices will enter the clinical translation stage in the next few years.
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Affiliation(s)
- Zi-Wei Ren
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Ze-Yu Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Yan-Wen Ding
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Jin-Wei Dao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, 678400, China
| | - Hao-Ru Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Xue Ma
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Xin-Yu Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Zi-Qi Zhou
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Jia-Xuan Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Chen-Hui Mi
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
| | - Zhe-Chen Gao
- Department of Orthopaedics, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China
| | - Hua Pei
- Department of Clinical Laboratory, The Second Affiliated Hospital, Hainan Medical University, Haikou, 570311, China.
| | - Dai-Xu Wei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, 710069, China.
- Department of Clinical Laboratory, The Second Affiliated Hospital, Hainan Medical University, Haikou, 570311, China.
- Shaanxi Key Laboratory for Carbon Neutral Technology, Xi'an, 710069, China
- Zigong Affiliated Hospital of Southwest Medical University, Zigong Psychiatric Research Center, Zigong Institute of Brain Science, Zigong, 643002, Sichuan, China
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9
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Fontana-Escartín A, Hauadi KE, Lanzalaco S, Pérez-Madrigal MM, Armelin E, Turon P, Alemán C. Smart Design of Sensor-Coated Surgical Sutures for Bacterial Infection Monitoring. Macromol Biosci 2023; 23:e2300024. [PMID: 37119469 DOI: 10.1002/mabi.202300024] [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: 01/24/2023] [Revised: 03/21/2023] [Indexed: 05/01/2023]
Abstract
Virtually, all implantable medical devices are susceptible to infection. As the main healthcare issue concerning implantable devices is the elevated risk of infection, different strategies based on the coating or functionalization of biomedical devices with antiseptic agents or antibiotics are proposed. In this work, an alternative approach is presented, which consists of the functionalization of implantable medical devices with sensors capable of detecting infection at very early stages through continuous monitoring of the bacteria metabolism. This approach, which is implemented in surgical sutures as a representative case of implantable devices susceptible to bacteria colonization, is expected to minimize the risk of worsening the patient's clinical condition. More specifically, non-absorbable polypropylene/polyethylene (PP/PE) surgical sutures are functionalized with conducting polymers using a combination of low-pressure oxygen plasma, chemical oxidative polymerization, and anodic polymerization, to detect metabolites coming from bacteria respiration. Functionalized suture yarns are used for real-time monitoring of bacteria growth, demonstrating the potential of this strategy to fight against infections.
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Affiliation(s)
- Adrián Fontana-Escartín
- Departament d'Enginyeria Química and Barcelona Research Center for Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya (UPC), C/ Eduard Maristany, 10-14, Barcelona, 08019, Spain
| | - Karima El Hauadi
- Departament d'Enginyeria Química and Barcelona Research Center for Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya (UPC), C/ Eduard Maristany, 10-14, Barcelona, 08019, Spain
| | - Sonia Lanzalaco
- Departament d'Enginyeria Química and Barcelona Research Center for Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya (UPC), C/ Eduard Maristany, 10-14, Barcelona, 08019, Spain
| | - Maria M Pérez-Madrigal
- Departament d'Enginyeria Química and Barcelona Research Center for Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya (UPC), C/ Eduard Maristany, 10-14, Barcelona, 08019, Spain
| | - Elaine Armelin
- Departament d'Enginyeria Química and Barcelona Research Center for Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya (UPC), C/ Eduard Maristany, 10-14, Barcelona, 08019, Spain
| | - Pau Turon
- B. Braun Surgical, S.A.U. Carretera de Terrasa 121, Rubí, 08191, Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química and Barcelona Research Center for Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya (UPC), C/ Eduard Maristany, 10-14, Barcelona, 08019, Spain
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, Barcelona, 08028, Spain
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10
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Hu S, Zhao Q, Niu Y, Luo C, Zhang Z, He B, Hao H. Synthesis, characterization, thermal stability, and in vitro and in vivo degradation study of polycaprolactone and polyglycolide block copolymers. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023; 34:302-314. [PMID: 36039407 DOI: 10.1080/09205063.2022.2119731] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Biodegradable polymer materials are attractive in various biomedical applications. Herein, we report a block aliphatic copolymer, polycaprolactone-block-polyglycolide (PCL-b-PGA, denoted as PCLGA), and explored the polymer composition effect on the thermal and degradation behaviors. Three copolymers with different PCL/PGA weight ratios were obtained by a two-step ring opening polymerization. The chemical structures and compositions of copolymers were studied by NMR and FT-IR. The thermal behaviors were investigated by DSC and TGA. The in vitro degradation in phosphate buffer saline and in vivo degradation as an implant in rats were evaluated and the hygroscopic rate and polymer weight loss changes were monitored in an eight-week period. PCLGA with a higher PCL composition showed a slower degradation in vitro and in vivo. These PCLGAs with different degradation rates could be used as biomedical implants for potential application in drug delivery and tissue repair.
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Affiliation(s)
- Shaodong Hu
- Technology Center, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, China
| | - Quan Zhao
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, China
| | - Yapeng Niu
- Technology Center, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, China
| | - Canxuan Luo
- Technology Center, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, China
| | - Zhixuan Zhang
- Technology Center, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, China
| | - Bin He
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, China
| | - Hui Hao
- Technology Center, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, China
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11
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Controlled delivery via hot-melt extrusion: A focus on non-biodegradable carriers for non-oral applications. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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12
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Luan Z, Liu S, Wang W, Xu K, Ye S, Dan R, Zhang H, Shu Z, Wang T, Fan C, Xing M, Yang S. Aligned nanofibrous collagen membranes from fish swim bladder as a tough and acid-resistant suture for pH-regulated stomach perforation and tendon rupture. Biomater Res 2022; 26:60. [DOI: 10.1186/s40824-022-00306-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/10/2022] [Indexed: 11/11/2022] Open
Abstract
Abstract
Background
Wound closure in the complex body environment places higher requirements on suture’s mechanical and biological performance. In the scenario of frequent mechanical gastric motility and extremely low pH, single functional sutures have limitations in dealing with stomach bleeding trauma where the normal healing will get deteriorated in acid. It necessitates to advance suture, which can regulate wounds, resist acid and intelligently sense stomach pH.
Methods
Based on fish swim bladder, a double-stranded drug-loaded suture was fabricated. Its cytotoxicity, histocompatibility, mechanical properties, acid resistance and multiple functions were verified. Also, suture’s performance suturing gastric wounds and Achilles tendon was verified in an in vivo model.
Results
By investigating the swim bladder’s multi-scale structure, the aligned tough collagen fibrous membrane can resist high hydrostatic pressure. We report that the multi-functional sutures on the twisted and aligned collagen fibers have acid resistance and low tissue reaction. Working with an implantable “capsule robot”, the smart suture can inhibit gastric acid secretion, curb the prolonged stomach bleeding and monitor real-time pH changes in rabbits and pigs. The suture can promote stomach healing and is strong enough to stitch the fractured Achilles tendon.
Conclusions
As a drug-loaded absorbable suture, the suture shows excellent performance and good application prospect in clinical work.
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13
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Chen YG, Li CX, Zhang Y, Qi YD, Liu XH, Feng J, Zhang XZ. Hybrid suture coating for dual-staged control over antibacterial actions to match well wound healing progression. MATERIALS HORIZONS 2022; 9:2824-2834. [PMID: 36039967 DOI: 10.1039/d2mh00591c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Absorbable sutures have moved to the forefront in surgical fields with a huge market. Antibacterial activity is one indispensable feature for the next generation of absorbable sutures. This study develops a simple and cost-effective coating method to endow sutures with staged control over antibacterial actions to achieve enhanced dual stages of the wound healing process. This method is achieved in aqueous solution under mild conditions without the usage of any organic solvent and reserves the fundamental properties of suture materials, based on the pH-dependent reversible self-polymerization of tannic acid (TA) together with the strong adhesion of poly (tannic acid) (PTA) not only toward the suture surface but also with TA. Just by changing pH of TA solution, a hybrid coating (MPTA) composed of PTA and TA could be readily formed on the commercialized sutures originating from synthetic and natural materials. In the initial post-surgery stage, wound sites are susceptible to aseptic and/or bacterial inflammation. The resulting acid conditions induce burst release of antibacterial TA mostly coming from the adsorbed TA monomer. In the later stage, TA release is tailored totally depending on the pH conditions determined by the healing degree of wounds, allowing the sustained antibacterial prevention in a biologically adjustable manner. Thus, antibacterial MPTA coating meets the rigid requirements that differ distinctly during two major wound healing stages. Nontoxic MPTA coating on sutures leads to excellent post-implantation outcomes regarding bacterial prevention/elimination, anti-inflammation, tissue repair and wound healing. Moreover, MPTA coating provides sutures with a robust platform for functional expansion due to the matrix-independent adhesive ability of PTA.
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Affiliation(s)
- Ying-Ge Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
| | - Chu-Xin Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
| | - Yu Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
| | - Yong-Dan Qi
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
| | - Xin-Hua Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
| | - Jun Feng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
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14
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Assessment of a Coated Mitomycin-Releasing Biodegradable Ureteral Stent as an Adjuvant Therapy in Upper Urothelial Carcinoma: A Comparative In Vitro Study. Polymers (Basel) 2022; 14:polym14153059. [PMID: 35956574 PMCID: PMC9370495 DOI: 10.3390/polym14153059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 12/16/2022] Open
Abstract
A major limitation of the treatment of low-grade upper tract urothelial carcinoma is the difficulty of intracavitary instillation of adjuvant therapy. Therefore, the aim of this in vitro study was to develop and to assess a new design of biodegradable ureteral stent coated with a silk fibroin matrix for the controlled release of mitomycin C as a chemotherapeutic drug. For this purpose, we assessed the coating of a biodegradable ureteral stent, BraidStent®, with silk fibroin and subsequently loaded the polymeric matrix with two formulations of mitomycin to evaluate its degradation rate, the concentration of mitomycin released, and changes in the pH and the weight of the stent. Our results confirm that the silk fibroin matrix is able to coat the biodegradable stent and release mitomycin for between 6 and 12 h in the urinary environment. There was a significant delay in the degradation rate of silk fibroin and mitomycin-coated stents compared to bare biodegradable stents, from 6–7 weeks to 13–14 weeks. The present study has shown the feasibility of using mitomycin C-loaded silk fibroin for the coating of biodegradable urinary stents. The addition of mitomycin C to the coating of silk fibroin biodegradable stents could be an attractive approach for intracavitary instillation in the upper urinary tract.
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15
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Akombaetwa N, Bwanga A, Makoni PA, Witika BA. Applications of Electrospun Drug-Eluting Nanofibers in Wound Healing: Current and Future Perspectives. Polymers (Basel) 2022; 14:polym14142931. [PMID: 35890706 PMCID: PMC9324048 DOI: 10.3390/polym14142931] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 12/14/2022] Open
Abstract
Wounds are a consequence of disruption in the structure, integrity, or function of the skin or tissue. Once a wound is formed following mechanical or chemical damage, the process of wound healing is initiated, which involves a series of chemical signaling and cellular mechanisms that lead to regeneration and/or repair. Disruption in the healing process may result in complications; therefore, interventions to accelerate wound healing are essential. In addition to mechanical support provided by sutures and traditional wound dressings, therapeutic agents play a major role in accelerating wound healing. The medicines known to improve the rate and extent of wound healing include antibacterial, anti-inflammatory, and proliferation enhancing agents. Nonetheless, the development of these agents into eluting nanofibers presents the possibility of fabricating wound dressings and sutures that provide mechanical support with the added advantage of local delivery of therapeutic agents to the site of injury. Herein, the process of wound healing, complications of wound healing, and current practices in wound healing acceleration are highlighted. Furthermore, the potential role of drug-eluting nanofibers in wound management is discussed, and lastly, the economic implications of wounds as well as future perspectives in applying fiber electrospinning in the design of wound dressings and sutures are considered and reported.
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Affiliation(s)
- Nakamwi Akombaetwa
- Department of Pharmacy, Livingstone Central Hospital, P.O. Box 60091, Livingstone 10101, Zambia;
| | - Alick Bwanga
- Department of Surgery, University Teaching Adult Hospital, Private Bag RW 1 X Ridgeway, Lusaka 10101, Zambia;
| | - Pedzisai Anotida Makoni
- Division of Pharmacology, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa
- Correspondence: (P.A.M.); (B.A.W.)
| | - Bwalya A. Witika
- Department of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria 0208, South Africa
- Correspondence: (P.A.M.); (B.A.W.)
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16
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Chen YG, Li CX, Zhang Y, Qi YD, Feng J, Zhang XZ. Antibacterial Sutures Coated with Smooth Chitosan Layer by Gradient Deposition. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2770-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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17
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Deng X, Gould M, Ali MA. A review of current advancements for wound healing: Biomaterial applications and medical devices. J Biomed Mater Res B Appl Biomater 2022; 110:2542-2573. [PMID: 35579269 PMCID: PMC9544096 DOI: 10.1002/jbm.b.35086] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 12/12/2022]
Abstract
Wound healing is a complex process that is critical in restoring the skin's barrier function. This process can be interrupted by numerous diseases resulting in chronic wounds that represent a major medical burden. Such wounds fail to follow the stages of healing and are often complicated by a pro‐inflammatory milieu attributed to increased proteinases, hypoxia, and bacterial accumulation. The comprehensive treatment of chronic wounds is still regarded as a significant unmet medical need due to the complex symptoms caused by the metabolic disorder of the wound microenvironment. As a result, several advanced medical devices, such as wound dressings, wearable wound monitors, negative pressure wound therapy devices, and surgical sutures, have been developed to correct the chronic wound environment and achieve skin tissue regeneration. Most medical devices encompass a wide range of products containing natural (e.g., chitosan, keratin, casein, collagen, hyaluronic acid, alginate, and silk fibroin) and synthetic (e.g., polyvinyl alcohol, polyethylene glycol, poly[lactic‐co‐glycolic acid], polycaprolactone, polylactic acid) polymers, as well as bioactive molecules (e.g., chemical drugs, silver, growth factors, stem cells, and plant compounds). This review addresses these medical devices with a focus on biomaterials and applications, aiming to deliver a critical theoretical reference for further research on chronic wound healing.
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Affiliation(s)
- Xiaoxuan Deng
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Maree Gould
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - M Azam Ali
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
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18
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Xu L, Liu Y, Zhou W, Yu D. Electrospun Medical Sutures for Wound Healing: A Review. Polymers (Basel) 2022; 14:polym14091637. [PMID: 35566807 PMCID: PMC9105379 DOI: 10.3390/polym14091637] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/16/2022] [Accepted: 04/17/2022] [Indexed: 02/01/2023] Open
Abstract
With the increasing demand for wound healing around the world, the level of medical equipment is also increasing, but sutures are still the preferred medical equipment for medical personnel to solve wound closures. Compared with the traditional sutures, the nanofiber sutures produced by combining the preparation technology of drug-eluting sutures have greatly improved both mechanical properties and biological properties. Electrospinning technology has attracted more attention as one of the most convenient and simple methods for preparing functional nanofibers and the related sutures. This review firstly discusses the structural classification of sutures and the performance analysis affecting the manufacture and use of sutures, followed by the discussion and classification of electrospinning technology, and then summarizes the relevant research on absorbable and non-absorbable sutures. Finally, several common polymers and biologically active substances used in creating sutures are concluded, the related applications of sutures are discussed, and the future prospects of electrospinning sutures are suggested.
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Affiliation(s)
- Lin Xu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
| | - Yanan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
- Correspondence: (Y.L.); (D.Y.)
| | - Wenhui Zhou
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
| | - Dengguang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (L.X.); (W.Z.)
- Shanghai Engineering Technology Research Center for High-Performance Medical Device Materials, Shanghai 200093, China
- Correspondence: (Y.L.); (D.Y.)
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19
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de la Harpe KM, Marimuthu T, Kondiah PPD, Kumar P, Ubanako P, Choonara YE. Synthesis of a novel monofilament bioabsorbable suture for biomedical applications. J Biomed Mater Res B Appl Biomater 2022; 110:2189-2210. [PMID: 35373911 PMCID: PMC9546231 DOI: 10.1002/jbm.b.35069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 11/07/2022]
Abstract
In this research, a novel bioabsorbable suture that is, monofilament and capable of localized drug delivery, was developed from a combination of natural biopolymers that where not previously applied for this purpose. The optimized suture formulation comprised of sodium alginate (6% wt/vol), pectin (0.1% wt/vol), and gelatin (3% wt/vol), in the presence of glycerol (4% vol/vol) which served as a plasticizer. The monofilament bioabsorbable sutures where synthesized via in situ ionic crosslinking in a barium chloride solution (2% wt/vol). The resulting suture was characterized in terms of mechanical properties, morphology, swelling, degradation, drug release, and biocompatibility, in addition to Fourier-transform infrared (FTIR) spectroscopy, Powder X-ray Diffraction (PXRD) and Differential Scanning Calorimetry (DSC) analysis. The drug loaded and non-drug loaded sutures had a maximum breaking strength of 4.18 and 4.08 N, in the straight configuration and 2.44 N and 2.59 N in the knot configuration, respectively. FTIR spectrum of crosslinked sutures depicted Δ9 cm-1 downward shift for the carboxyl stretching band which was indicative of ionic interactions between barium ions and sodium alginate. In vitro analysis revealed continued drug release for 7 days and gradual degradation by means of surface erosion, which was completed by day 28. Biocompatibility studies revealed excellent hemocompatibility and no cytotoxicity. These results suggest that the newly developed bioabsorbable suture meets the basic requirements of a suture material and provides a viable alternative to the synthetic polymer sutures that are currently on the market.
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Affiliation(s)
- Kara M de la Harpe
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Thashree Marimuthu
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Pierre P D Kondiah
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Philemon Ubanako
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
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20
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Zhang L, Wang W, Xie B, Sun P, Wei S, Wu H, Zhang C, Li J, Li Z, Bai H. PLGA Nanoparticle Rapamycin- or Necrostatin-1-Coated Sutures Inhibit Inflammatory Reactions after Arterial Closure in Rats. ACS APPLIED BIO MATERIALS 2022; 5:1501-1507. [PMID: 35297594 DOI: 10.1021/acsabm.1c01256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Background: The inflammatory reaction of sutures and oozing after arterial closure depends on the suture material and the amount of oozing surrounding the sutures. Anti-inflammation coatings have been proven to be an effective strategy to decrease this reaction. The aim of this study was to establish an arterial closure oozing model in rats and to test the effect of poly (lactic-co-glycolic acid) (PLGA) nanoparticle (NP) rapamycin- or necrostatin-1(NEC-1)-coated sutures on the inflammatory reaction after arterial closure. Methods and Materials: A 10 mm arteriotomy was carried out on the carotid artery of Sprague-Dawley rats and closed using 11-0 sutures. PLGA NP-rapamycin and NEC-1 were made. The 11/0 nylon sutures were coated with PLGA NP-rapamycin and NEC-1. Sutures were examined by scanning electron microscopy, hemolysis test, and cumulative release. The carotid arteriotomy was closed using uncoated PLGA NP-rapamycin- and NP-NEC-1-coated sutures. The carotid artery was harvested on day 7. Tissues were examined by histology and immunohistochemistry. Results: There were severe inflammatory reactions in the oozing arteries compared to the normal healing arteries (P = 0.0192). PLGA NP-rapamycin- and NEC -1-coated sutures reduced foreign body reaction compared to the uncoated sutures. There were significantly smaller number of CD3 (P = 0.0068), CD45 (P = 0.0300), and CD68 (P = 0.0011) cells in the PLGA NP-rapamycin- and NP-NEC-1-coated groups compared to the uncoated group. There was a smaller number of p-mTOR (P = 0.0198)-positive cells in the PLGA NP-rapamycin-coated group compared to the uncoated group. There was a smaller number of TNFα (P = 0.0198)-positive cells in the PLGA NP-NEC-1-coated group compared to the uncoated group. Conclusions: In this rat carotid artery oozing model, PLGA NP-rapamycin- or NP-NEC-1-coated sutures can inhibit inflammatory reaction and foreign body reaction. Although this was a small rodent animal experiment, this coated suture may have a potential clinical application in the future.
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Affiliation(s)
- Liwei Zhang
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan 450052, China.,Key Vascular Physiology and Applied Research Laboratory of Zhengzhou City, Henan 450052, China
| | - Wang Wang
- Department of Physiology, Medical School of Zhengzhou University, Henan 450001, China.,Key Vascular Physiology and Applied Research Laboratory of Zhengzhou City, Henan 450052, China
| | - Boao Xie
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan 450052, China
| | - Peng Sun
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan 450052, China
| | - Shunbo Wei
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan 450052, China
| | - Haoliang Wu
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan 450052, China
| | - Cong Zhang
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan 450052, China
| | - Jingan Li
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of Materials Processing and Mold Technology (Ministry of Education), Zhengzhou University, Henan 450001, China
| | - Zhuo Li
- Key Vascular Physiology and Applied Research Laboratory of Zhengzhou City, Henan 450052, China.,Department of Neurology, First Affiliated Hospital of Zhengzhou University, Henan 450052, China
| | - Hualong Bai
- Department of Vascular and Endovascular Surgery, First Affiliated Hospital of Zhengzhou University, Henan 450052, China.,Key Vascular Physiology and Applied Research Laboratory of Zhengzhou City, Henan 450052, China
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21
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Madheswaran D, Sivan M, Valtera J, Kostakova EK, Egghe T, Asadian M, Novotny V, Nguyen NHA, Sevcu A, Morent R, De Geyter N, Lukas D. Composite yarns with antibacterial nanofibrous sheaths produced by collectorless alternating‐current electrospinning for suture applications. J Appl Polym Sci 2021. [DOI: 10.1002/app.51851] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Divyabharathi Madheswaran
- Faculty of Textile Engineering, Department of Nonwovens and Nanofibrous Materials Technical University of Liberec Liberec Czech Republic
| | - Manikandan Sivan
- Faculty of Textile Engineering, Department of Nonwovens and Nanofibrous Materials Technical University of Liberec Liberec Czech Republic
| | - Jan Valtera
- Faculty of Mechanical Engineering, Department of Textile Machine Design Technical University of Liberec Liberec Czech Republic
| | - Eva Kuzelova Kostakova
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
| | - Tim Egghe
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Mahtab Asadian
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Vit Novotny
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Nhung H. A. Nguyen
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Alena Sevcu
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
- Centre for Nanomaterials, Advanced Technologies and Innovations Technical University of Liberec Liberec Czech Republic
| | - Rino Morent
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - Nathalie De Geyter
- Faculty of Engineering and Architecture, Department of Applied Physics Research Unit Plasma Technology (RUPT), Ghent University Ghent Belgium
| | - David Lukas
- Faculty of Science, Humanities, and Education, Department of Chemistry – Bioengineering Technical University of Liberec Liberec Czech Republic
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22
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Preparation of a Cage-Type Polyglycolic Acid/Collagen Nanofiber Blend with Improved Surface Wettability and Handling Properties for Potential Biomedical Applications. Polymers (Basel) 2021; 13:polym13203458. [PMID: 34685218 PMCID: PMC8541674 DOI: 10.3390/polym13203458] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/30/2021] [Accepted: 10/05/2021] [Indexed: 11/17/2022] Open
Abstract
Electrospun biobased polymeric nanofiber blends are widely used as biomaterials for different applications, such as tissue engineering and cell adhesion; however, their surface wettability and handling require further improvements for their practical utilization in the assistance of surgical operations. Therefore, Polyglycolic acid (PGA) and collagen-based nanofibers with three different ratios (40:60, 50:50 and 60:40) were prepared using the electrospinning method, and their surface wettability was improved using ozonation and plasma (nitrogen) treatment. The effect on the wettability and the morphology of pristine and blended PGA and collagen nanofibers was assessed using the WCA test and SEM, respectively. It was observed that PGA/collagen with the ratio 60:40 was the optimal blend, which resulted in nanofibers with easy handling and bead-free morphology that could maintain their structural integrity even after the surface treatments, imparting hydrophilicity on the surface, which can be advantageous for cell adhesion applications. Additionally, a cage-type collector was used during the electrospinning process to provide better handling properties to (PGA/collagen 60:40) blend. The resultant nanofiber mat was then incorporated with activated poly (α,β-malic acid) to improve its surface hydrophilicity. The chemical composition of PGA/collagen 60:40 was assessed using FTIR spectroscopy, supported by Raman spectroscopy.
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Di Salle A, Viscusi G, Di Cristo F, Valentino A, Gorrasi G, Lamberti E, Vittoria V, Calarco A, Peluso G. Antimicrobial and Antibiofilm Activity of Curcumin-Loaded Electrospun Nanofibers for the Prevention of the Biofilm-Associated Infections. Molecules 2021; 26:molecules26164866. [PMID: 34443457 PMCID: PMC8400440 DOI: 10.3390/molecules26164866] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/28/2021] [Accepted: 08/08/2021] [Indexed: 12/22/2022] Open
Abstract
Curcumin extracted from the rhizome of Curcuma Longa has been used in therapeutic preparations for centuries in different parts of the world. However, its bioactivity is limited by chemical instability, water insolubility, low bioavailability, and extensive metabolism. In this study, the coaxial electrospinning technique was used to produce both poly (ε-caprolactone) (PCL)-curcumin and core-shell nanofibers composed of PCL and curcumin in the core and poly (lactic acid) (PLA) in the shell. Morphology and physical properties, as well as the release of curcumin were studied and compared with neat PCL, showing the formation of randomly oriented, defect-free cylindrical fibers with a narrow distribution of the dimensions. The antibacterial and antibiofilm potential, including the capacity to interfere with the quorum-sensing mechanism, was evaluated on Pseudomonas aeruginosa PAO1, and Streptococcus mutans, two opportunistic pathogenic bacteria frequently associated with infections. The reported results demonstrated the ability of the Curcumin-loading membranes to inhibit both PAO1 and S. mutans biofilm growth and activity, thus representing a promising solution for the prevention of biofilm-associated infections. Moreover, the high biocompatibility and the ability to control the oxidative stress of damaged tissue, make the synthesized membranes useful as scaffolds in tissue engineering regeneration, helping to accelerate the healing process.
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Affiliation(s)
- Anna Di Salle
- Research Institute of Terrestrial Ecosystems (IRET)—CNR, Via Castellino, 111, 80131 Naples, Italy; (A.D.S.); (A.V.); (G.P.)
| | - Gianluca Viscusi
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy;
| | | | - Anna Valentino
- Research Institute of Terrestrial Ecosystems (IRET)—CNR, Via Castellino, 111, 80131 Naples, Italy; (A.D.S.); (A.V.); (G.P.)
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale “A. Avogadro”, Largo Donegani, 2, 28100 Novara, Italy
| | - Giuliana Gorrasi
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy;
- Correspondence: (G.G.); (A.C.)
| | - Elena Lamberti
- Nice Filler s.r.l., Via Loggia dei Pisani, 25, 80133 Naples, Italy; (E.L.); (V.V.)
| | - Vittoria Vittoria
- Nice Filler s.r.l., Via Loggia dei Pisani, 25, 80133 Naples, Italy; (E.L.); (V.V.)
| | - Anna Calarco
- Research Institute of Terrestrial Ecosystems (IRET)—CNR, Via Castellino, 111, 80131 Naples, Italy; (A.D.S.); (A.V.); (G.P.)
- Correspondence: (G.G.); (A.C.)
| | - Gianfranco Peluso
- Research Institute of Terrestrial Ecosystems (IRET)—CNR, Via Castellino, 111, 80131 Naples, Italy; (A.D.S.); (A.V.); (G.P.)
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