1
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YiXin L, ShaoNa N, LiFang M, XingZhou L, Chuan Y. Comparison of different concentrations of chlorhexidine-iodophor composite solution on human skin fibroblasts. J Wound Care 2024; 33:xxxii-xl. [PMID: 38324419 DOI: 10.12968/jowc.2024.33.sup2a.xxxii] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
OBJECTIVE Chlorhexidine-iodophor (CHX-IP) composite solution is a polymer of chlorhexidine and iodophor produced with new technology, for use in diabetic foot infection. However, the effect of CHX-IP on the growth activity of fibroblasts remains unknown, thus the effects of different concentrations of CHX-IP composite solution on the viability and micromorphology of human skin fibroblasts were studied in vitro cell culture in this study. METHOD A cell viability assay was applied to calculate cell viability and an inverted fluorescence microscope was used to observe cell morphology over five days. RESULTS The results showed that the toxic effect of CHX-IP on fibroblasts was solution concentration-dependent and decreased over time. When the concentration of CHX-IP was 5.0mg/ml, 2.5mg/ml, 0.625mg/ml, 0.15625mg/ml, 0.078125mg/ml or 0mg/ml, the difference of optical density (OD) value on different days was statistically significant (p<0.05). There were statistically significant differences in the OD value of fibroblasts among different concentrations of CHX-IP on: day 2 (F=4.809, p=0.004); day 3 (F=21.508, p<0.001); day 4 (F=63.952, p<0.001); and day 5 (F=160.407, p<0.001). In addition, a concentration of 5.0mg/ml CHX-IP resulted in a fibroblastic viability rate of 0% on day 4, when CHX-IP was diluted to 2.5mg/ml or 1.25 mg/ml, fibroblastic viability rate decreased to 0% day 5. However, when the CHX-IP was diluted to 0.15625mg/ml or 0.078125mg/ml, the fibroblastic cell viability rate increased slightly on day 5. The morphology of cells observed under microscope indirectly supported this result. CONCLUSION The findings of this study showed that the toxic effect of CHX-IP on fibroblasts was solution concentration-dependent and decreased over time.
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Affiliation(s)
- Luo YiXin
- Department of Nursing, Guangxi Medical University First Affiliated Hospital, Nanning 530000, China
| | - Niu ShaoNa
- Department of Endocrinology and Metabolism, Linyi People's Hospital, Linyi 276003, ShanDong Province of China
| | - Mai LiFang
- Endocrinology Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Liu XingZhou
- Endocrinology Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Yang Chuan
- Endocrinology Department, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
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2
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Bouloussa H, Mirza M, Ansley B, Jilakara B, Yue JJ. Implant Surface Technologies to Prevent Surgical Site Infections in Spine Surgery. Int J Spine Surg 2023; 17:S75-S85. [PMID: 38135445 PMCID: PMC10753351 DOI: 10.14444/8563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023] Open
Abstract
Spine surgeries are occurring more frequently worldwide. Spinal implant infections are one of the most common complications of spine surgery, with a rate of 0.7% to 11.9%. These implant-related infections are a consequence of surface polymicrobial biofilm formation. New technologies to combat implant-related infections are being developed as their burden increases; however, none have reached the market stage in spine surgery. Conferring antimicrobial properties to biomaterials relies on either surface coating (physical, chemical, or combined) or surface modification (physical, chemical, or combined). Such treatment can also result in toxicity and the progression of antimicrobial resistance. This narrative review will discuss "late-stage" antimicrobial technologies (mostly validated in vivo) that use these techniques and may be incorporated onto spine implants to decrease the burden of implant-related health care-acquired infections (HAIs). Successfully reducing this burden will greatly improve the quality of life in spine surgery. Familiarity with upcoming surface technologies will help spine surgeons understand the anti-infective strategies designed to address the rapidly worsening challenge of implant-related health care-acquired infections.
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Affiliation(s)
- Houssam Bouloussa
- Department of Orthopaedic Surgery, University of Missouri, Kansas City, MO, USA
| | - Mohsin Mirza
- University of Connecticut School of Medicine, Farmington, CT, USA
| | - Brant Ansley
- Department of Orthopaedic Surgery, University of Missouri, Kansas City, MO, USA
| | - Bharadwaj Jilakara
- Department of Orthopaedic Surgery, University of Missouri, Kansas City, MO, USA
| | - James J Yue
- CT Orthopaedic Specialists, Hamden, CT, USA
- Department of Surgery, Quinnipiac University, Hamden, CT, USA
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3
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Landa G, Miranda-Calderon LG, Gomez A, Perez M, Sebastian V, Arruebo M, Lamarche I, Tewes F, Irusta S, Mendoza G. Real-time in vivo monitoring of the antimicrobial action of combination therapies in the management of infected topical wounds. Int J Pharm 2023; 646:123502. [PMID: 37827392 DOI: 10.1016/j.ijpharm.2023.123502] [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: 08/25/2023] [Revised: 09/27/2023] [Accepted: 10/09/2023] [Indexed: 10/14/2023]
Abstract
The increasing prevalence of non-healing infected wounds has become a serious concern in the clinical practice, being associated to population aging and to the rising prevalence of several chronic conditions such as diabetes. Herein, the evaluation of the bactericidal and antibiofilm effects of the natural antiseptic terpenes thymol and farnesol standing alone or in combination with the standard care antiseptic chlorhexidine was carried out both in vitro and in vivo. The in vitro combinatorial treatment of chlorhexidine associated with those terpenes against Staphylococcus aureus in its planktonic and sessile forms demonstrated a superior antibacterial activity than that of chlorhexidine alone. Real-time in vivo monitoring of infection progression and antimicrobial treatment outcomes were evaluated using the bioluminescent S. aureus strain Xen36. In vivo studies on infected wound splinting murine models corroborated the superior bactericidal effects of the combinatorial treatments here proposed. Moreover, the encapsulation of thymol in electrospun Eudragit® S100 (i.e., a synthetic anionic copolymer of methacrylic acid and ethyl acrylate)-based wound dressings was also carried out in order to design efficient antimicrobial wound dressings.
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Affiliation(s)
- Guillermo Landa
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain; Department of Chemical and Environmental Engineering. University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Laura G Miranda-Calderon
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain; Department of Chemical and Environmental Engineering. University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain
| | - Alex Gomez
- Department of Animal Pathology, University of Zaragoza, 177 Miguel Servet Street, 50013 Zaragoza, Spain; Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), University of Zaragoza, 50013 Zaragoza, Spain
| | - Marta Perez
- Instituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2), University of Zaragoza, 50013 Zaragoza, Spain; Department of Anatomy, Embriology and Animal Genetics, University of Zaragoza, 177 Miguel Servet Street, 50013 Zaragoza, Spain
| | - Victor Sebastian
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain; Department of Chemical and Environmental Engineering. University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Manuel Arruebo
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain; Department of Chemical and Environmental Engineering. University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain.
| | - Isabelle Lamarche
- INSERM U1070 "Pharmacology of anti-infective agents", 1 rue Georges Bonnet, Pôle Biologie Santé, 86022 Poitiers, France
| | - Frederic Tewes
- INSERM U1070 "Pharmacology of anti-infective agents", 1 rue Georges Bonnet, Pôle Biologie Santé, 86022 Poitiers, France.
| | - Silvia Irusta
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain; Department of Chemical and Environmental Engineering. University of Zaragoza, Campus Río Ebro-Edificio I+D, C/ Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
| | - Gracia Mendoza
- Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain
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4
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Berezovska A, Meiller A, Marinesco S, Nedellec Y, Giroud F, Gross AJ, Cosnier S. Chlorhexidine digluconate exerts bactericidal activity vs. gram positive Staphylococci with bioelectrocatalytic compatibility: High level disinfection for implantable biofuel cells. Bioelectrochemistry 2023; 152:108435. [PMID: 37099859 DOI: 10.1016/j.bioelechem.2023.108435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/17/2023] [Accepted: 04/01/2023] [Indexed: 04/08/2023]
Abstract
Implanted devices destined for contact with sterile body tissues, vasculature or fluids should be free of any microbial contamination that could lead to disease transmission. The disinfection and sterilisation of implantable biofuel cells is a challenging and largely overlooked subject due to the incompatibility of fragile biocatalytic components with classical treatments. Here we report the development of a convenient "soft" chemical treatment based on immersion of enzymatic bioelectrodes and biofuel cells in dilute aqueous chlorhexidine digluconate (CHx). We show that immersion treatment in a 0.5 % solution of CHx for 5 min is sufficient to remove 10-6 log colony forming units of Staphylococcus hominis after 26 h while shorter treatments are less effective. Treatments with 0.2 % CHx solutions were ineffective. Bioelectrocatalytic half-cell voltammetry revealed no loss in activity at the bioanode after the bactericidal treatment, while the cathode was less tolerant. A maximum power output loss of ca. 10 % for the glucose/O2 biofuel cell was observed following the 5 min CHx treatment, while the dialysis bag had a significant negative impact on the power output. Finally, we report a proof-of-concept in vivo operation for 4 days of a CHx-treated biofuel cell with a 3D printed holder and additional porous surgical tissue interface. Further assessments are necessary to rigorously validate sterilisation, biocompatibility and tissue response performance.
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Affiliation(s)
- Anastasiia Berezovska
- Département de Chimie Moléculaire (DCM), Univ. Grenoble Alpes - CNRS 570 rue de la Chimie, 38041 Grenoble, France
| | - Anne Meiller
- Lyon Neuroscience Research Center, Team TIGER, BELIV technological platform, Univ. of Lyon, CNRS UMR5292, Inserm U1028, Lyon, France Centre Hospitalier Le Vinatier, Bat Neurocampus, 95 Bd Pinel, 69675 Bron cedex, France
| | - Stéphane Marinesco
- Lyon Neuroscience Research Center, Team TIGER, BELIV technological platform, Univ. of Lyon, CNRS UMR5292, Inserm U1028, Lyon, France Centre Hospitalier Le Vinatier, Bat Neurocampus, 95 Bd Pinel, 69675 Bron cedex, France
| | - Yannig Nedellec
- Département de Chimie Moléculaire (DCM), Univ. Grenoble Alpes - CNRS 570 rue de la Chimie, 38041 Grenoble, France
| | - Fabien Giroud
- Département de Chimie Moléculaire (DCM), Univ. Grenoble Alpes - CNRS 570 rue de la Chimie, 38041 Grenoble, France
| | - Andrew J Gross
- Département de Chimie Moléculaire (DCM), Univ. Grenoble Alpes - CNRS 570 rue de la Chimie, 38041 Grenoble, France.
| | - Serge Cosnier
- Département de Chimie Moléculaire (DCM), Univ. Grenoble Alpes - CNRS 570 rue de la Chimie, 38041 Grenoble, France.
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5
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Combination of Cetylpyridinium Chloride and Chlorhexidine Acetate: A Promising Candidate for Rapid Killing of Gram-Positive/Gram-Negative Bacteria and Fungi. Curr Microbiol 2023; 80:97. [PMID: 36738393 PMCID: PMC9899061 DOI: 10.1007/s00284-023-03198-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/19/2023] [Indexed: 02/05/2023]
Abstract
Combined use of the present antimicrobial drugs has been proved to be an alternative approach for antimicrobial agents' development since the co-existed of the drugs working in different mechanism have been demonstrated potentially enhance their antimicrobial activity. In this work, antibacterial and antifungal activity of the cetylpyridinium chloride (CPC)/chlorhexidine acetate (CHA) combination was evaluated for the first time, while a universal concentration for the rapid killing of gram-positive/gram-negative bacteria and fungi was also proposed. The minimum inhibitory concentrations (MIC) of CPC and CHA used alone or in combination were first measured, showing that the combined treatment decreased the MIC against tested gram-positive/gram-negative bacteria and fungi to 1/8-1/2. Growth curve assays demonstrated CPC and CHA had dynamic combined effects against the tested microorganisms at the concentration equal to MIC. Besides, combined use of these two drugs could also enhance their biocidal activity, which was illustrated by fluorescence microscopy and SEM images, as well as soluble protein measurement. More importantly, in vitro acute eye and skin irritation tests showed short-term contact with CPC/CHA combination would not cause any damage to mammalian mucosa and skin. In a word, CPC/CHA combination exhibited broad-spectrum antibacterial and antifungal activity against tested gram-positive/gram-negative bacteria and fungi while without any acute irritation to mammalian mucosa and skin, providing a new perspective on the selection of personal disinfectants.
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6
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Luo Y, Wei X, Mai L, Liu X, Yang C. Effects of Chlorhexidine-Iodophor Composite Solution on the Viability and Proliferation of Human Skin Fibroblasts Infected by S. aureus - An in Vitro Experiment. INT J LOW EXTR WOUND 2022:15347346221132673. [PMID: 36250526 DOI: 10.1177/15347346221132673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Background: The chlorhexidine-iodophor (CHX-IP) composite solution is a polymer of chlorhexidine and iodophor, applicable to the control of local microbial load and probably toxic to fibroblasts. However, the effect of CHX-IP on the viability and proliferation of human skin fibroblasts infected by Staphylococcus aureus (S. aureus) remains unknown. Objective: The effects of CHX-IP composite solution on the viability and proliferation of human skin fibroblasts infected by S. aureus were investigated in vitro cell culture in this study. Methods: Optimum multiplicity of infection (MOI) was determined to construct the S. aureus-fibroblast co-culture model. Cell Viability Assay was applied to obtain optical density (OD) value and calculate cell viability. 5-ethynyl-2'- deoxyuridine (EdU) assay was used to investigate the effect of CHX-IP on the proliferation of human skin fibroblasts infected by S. aureus. Results: 10:1 was the optimum MOI for the S. aureus-fibroblast co-culture model. The OD value of human skin fibroblasts infected by S. aureus increased in the blank control group, 0.625 mg/ml, 0.3125 mg/ml, 0.15625 mg/ml, and 0.075625 mg/ml groups after four hours. While that of the negative control group, 5 mg/ml, 2.5 mg/ml, and 1.25 mg/ml groups decreased over time. The two-way ANOVA results indicated that the OD value of human skin fibroblasts infected by S. aureus was significantly different among different CHX-IP concentration groups (F = 34.05, P < .001), and the interaction effect between concentration and time was significant (F = 9.442, P < .001). The results of the EdU cell proliferation assay showed that the blank control group, 0.625 mg/ml CHX-IP group, and 0.075625 mg/ml CHX-IP group had an enhanced fibroblasts cell proliferation, while the fibroblasts cell proliferation of the negative control group and 5 mg/ml CHX-IP group was inhibited. Conclusion: The viability and proliferation of human skin fibroblasts infected by S. aureus were inhibited, while specific concentrations of CHX-IP solution can counteract or even reverse the proliferation inhibition effect.
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Affiliation(s)
- Yixin Luo
- School of Nursing, 26469Sun Yat-sen University, Guangzhou, China
| | - Xiaocui Wei
- School of Nursing, 26469Sun Yat-sen University, Guangzhou, China
| | - Lifang Mai
- Department of Endocrinology, 56713Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xingzhou Liu
- Department of Endocrinology, 56713Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chuan Yang
- Department of Endocrinology, 56713Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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7
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Su C, Chen J, Xie X, Gao Z, Guan Z, Mo X, Wang C, Hou G. Functionalized Electrospun Double-Layer Nanofibrous Scaffold for Wound Healing and Scar Inhibition. ACS OMEGA 2022; 7:30137-30148. [PMID: 36061738 PMCID: PMC9435051 DOI: 10.1021/acsomega.2c03222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/05/2022] [Indexed: 05/27/2023]
Abstract
Considerable advances have been made in developing materials that promote wound healing and inhibit scar formation in clinical settings. However, some challenges, such as cumbersome treatment processes and determination of optimal treatment time, remain unresolved. Thus, developing a multifunctional wound dressing with both wound healing and scar inhibition properties is crucial. Here, we present an integrated electrospun fibrous composite membrane (MPC12) for wound healing and scar inhibition, consisting of a quaternized chitosan-loaded inner membrane (PCQC5) and quaternized silicone-loaded outer membrane (MQP12). The inner membrane effectively coagulates blood and promotes wound healing, and the outer membrane moisturizes, resists bacteria, and inhibits scar formation. In vivo evaluation in a rabbit ear model revealed that MPC12 treatment results in faster wound healing and better alleviation of scar hypertrophy than treatment with commercial products (KELO-COTE and MSSG). Our strategy offers an excellent solution for the potential integration of wound healing and scar inhibition.
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Affiliation(s)
- Changming Su
- School
of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation
of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai 264003, People’s Republic of China
| | - Jing Chen
- School
of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation
of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai 264003, People’s Republic of China
| | - Xianrui Xie
- School
of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation
of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai 264003, People’s Republic of China
| | - Zhongfei Gao
- School
of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation
of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai 264003, People’s Republic of China
| | - Zhenxin Guan
- School
of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation
of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai 264003, People’s Republic of China
| | - Xiumei Mo
- State
Key Laboratory for Modification of Chemical Fibers and Polymer Materials,
College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People’s Republic of China
| | - Chunhua Wang
- School
of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation
of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai 264003, People’s Republic of China
| | - Guige Hou
- School
of Pharmacy, Key Laboratory of Prescription Effect and Clinical Evaluation
of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai 264003, People’s Republic of China
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8
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Roig-Sanchez S, Kam D, Malandain N, Sachyani-Keneth E, Shoseyov O, Magdassi S, Laromaine A, Roig A. One-step double network hydrogels of photocurable monomers and bacterial cellulose fibers. Carbohydr Polym 2022; 294:119778. [DOI: 10.1016/j.carbpol.2022.119778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/25/2022] [Accepted: 06/21/2022] [Indexed: 11/02/2022]
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Chen Y, Yu W, Qian X, Li X, Wang Y, Ji J. Dissolving microneedles with a biphasic release of antibacterial agent and growth factor to promote wound healing. Biomater Sci 2022; 10:2409-2416. [PMID: 35384952 DOI: 10.1039/d2bm00281g] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Infected wound healing is a complex and dynamic process affecting millions of people. Since wound healing contains multiple stages, it requires staged management to realize the early inhibition of infection and the subsequent promotion of wound healing. A key point is to design a biphasic release system with antibacterial agents and growth factors to promote wound regeneration. As a safe, efficient and painless transdermal drug delivery method, microneedles (MNs) have attracted widespread attention. Herein, we present dissolving MNs with the biphasic release of an antibacterial agent and a growth factor to promote wound healing. bFGF was first encapsulated in PLGA microspheres (bFGF@PLGA) and then co-loaded with free ofloxacin onto polyvinylpyrrolidone MNs. Owing to the fast dissolution of the substrate, ofloxacin was quickly released to rapidly inhibit infection, while the PLGA microspheres were left in the wound. Due to the slow degradation of PLGA, bFGF encapsulated in the PLGA microspheres was slowly released to further promote wound healing. In vivo studies demonstrated that the MNs with the biphasic release of antibacterial agent and growth factor exhibited a superior capability to promote wound healing. This biphasic release system combined with microneedles has a bright future in wound healing.
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Affiliation(s)
- Yonghang Chen
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
| | - Weijiang Yu
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
| | - Xuedan Qian
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
| | - Xinfang Li
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
| | - Youxiang Wang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
| | - Jian Ji
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
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10
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Maraldi M, Lisi M, Moretti G, Sponchioni M, Moscatelli D. Health care-associated infections: Controlled delivery of cationic antiseptics from polymeric excipients. Int J Pharm 2021; 607:120956. [PMID: 34333024 DOI: 10.1016/j.ijpharm.2021.120956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/02/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Nowadays, the treatment of health care-associated infections represents a serious issue, due to the increasing number of bacterial strains resistant to traditional antibiotics. The use of antiseptics like quaternary ammonium salts and biguanides is a viable alternative to face these life-threatening infections. However, their inherent toxicity as well as the necessity of providing a sustained release to avoid the formation of pathogen biofilms are compelling obstacles towards their assessment in the hospitals. Within this framework, the role of polymeric drug delivery systems is fundamental to overcome the aforementioned problems. Biocompatibility, biodegradability and excipient-drug interactions are crucial properties determining the efficacy of the formulation. In this work, we provide an in-depth analysis of the polymer drug delivery systems that have been developed or are under development for the sustained release of positively charged antiseptics, highlighting the crucial characteristics that allowed to achieve the most relevant therapeutic effects. We reported and compared natural occurring polymers and synthetic carriers to show their pros and cons and applicability in the treatment of health care-associated infections. Then, the discussion is focused on a particularly relevant class of materials adopted for the scope, represented by polyesters, which gave rise, due to their biodegradability, to the field of resorbable drug delivery devices. Finally, a specific analysis on the effect of the polymer functionalization over the formulation performances for the different types of polymeric carriers is presented.
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Affiliation(s)
- Matteo Maraldi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Marco Lisi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Giacomo Moretti
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Mattia Sponchioni
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy.
| | - Davide Moscatelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
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11
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In Vitro Microbiological and Drug Release of Silver/Ibuprofen Loaded Wound Dressing Designed for the Treatment of Chronically Infected Painful Wounds. Antibiotics (Basel) 2021; 10:antibiotics10070805. [PMID: 34356725 PMCID: PMC8300664 DOI: 10.3390/antibiotics10070805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/24/2021] [Accepted: 06/29/2021] [Indexed: 11/17/2022] Open
Abstract
This study consisted of developing a dressing loaded with silver (Ag) and ibuprofen (IBU) that provides a dual therapy, antibacterial and antalgic, intended for infected painful wounds. Therefore, non-woven polyethyleneterephtalate (PET) textiles nonwovens were pre-treated by cyclodextrin crosslinked with citric acid by a pad/dry/cure process. Then, textiles were impregnated in silver solution followed by a thermal treatment and were then coated by Layer-by-Layer (L-b-L) deposition of a polyelectrolyte multilayer (PEM) system consisting of anionic water-soluble poly(betacyclodextrin citrate) (PCD) and cationic chitosan. Finally, ibuprofen lysinate (IBU-L) was loaded on the PEM coating. We demonstrated the complexation of IBU with native βCD and PCD by phase solubility diagram and 1H NMR. PEM system allowed complete IBU-L release in 6 h in PBS pH 7.4 batch (USP IV). On the other hand, microbiological tests demonstrated that loaded silver induced bacterial reduction of 4 Log10 against S. aureus and E. coli and tests revealed that ibuprofen lysinate loading did not interfere with the antibacterial properties of the dressing.
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12
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Junthip J, Tabary N, Maton M, Ouerghemmi S, Staelens JN, Cazaux F, Neut C, Blanchemain N, Martel B. Release-killing properties of a textile modified by a layer-by-layer coating based on two oppositely charged cyclodextrin polyelectrolytes. Int J Pharm 2020; 587:119730. [PMID: 32755687 DOI: 10.1016/j.ijpharm.2020.119730] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 12/22/2022]
Abstract
Infections represent a major medical concern and have severe impact on the public health economy. Antimicrobial coatings represent one major solution and are the subject of many investigations in academic and industrial research. Polyelectrolyte multilayers (PEMs) consist in the step-by-step deposition of polyanions and polycations films on surfaces. The wide range of disposable polyelectrolytes makes this approach among the most versatile methods as it allows to design surfaces that prevent bacterial adhesion, and kill bacteria by contact or by releasing antibacterial agents. The present work focused on the release-killing effect of an active PEM coating of a polyethylene terephthalate (PET) textile support. This activity was obtained thanks to the PEM film build up using cationic and anionic polyelectrolytes both based on cyclodextrins (PCD- and PCD+) that provided a reservoir property and prolonged release of triclosan (TCS). To this effect, a PET non-woven preliminarily modified with carboxylate groups by applying a thermofixation process was then treated by dip-coating, alternating soaking cycles in cationic PCD+ and in anionic PCD- solutions. Samples coated with such PEM film were then loaded with TCS whose release was assessed in dynamic mode in a phosphate buffered saline solution (PBS) at 37 °C. In parallel, TCS/PCD+ and TCS/PCD- interactions were investigated by Nuclear Magnetic Resonance (NMR) and phase solubility study, and the biocide activity was assessed against S. aureus and E. coli. Finally, the present study has demonstrated that our PCD+/PCD- PEM system presented release-killing properties that supplement the contact-killing effect of this system that was reported in a previous paper.
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Affiliation(s)
- Jatupol Junthip
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Nicolas Tabary
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France.
| | - Mickael Maton
- INSERM U1008, CHU Lille, Controlled Drug Delivery Systems and Biomaterials, 59000 Lille, France
| | - Safa Ouerghemmi
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Jean-Noel Staelens
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Frédéric Cazaux
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Christel Neut
- INSERM U995 LIRIC, Laboratory of Bacteriology, College of Pharmacy, 59000 Lille, France
| | - Nicolas Blanchemain
- INSERM U1008, CHU Lille, Controlled Drug Delivery Systems and Biomaterials, 59000 Lille, France
| | - Bernard Martel
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
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13
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Nazarnezhad S, Baino F, Kim HW, Webster TJ, Kargozar S. Electrospun Nanofibers for Improved Angiogenesis: Promises for Tissue Engineering Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1609. [PMID: 32824491 PMCID: PMC7466668 DOI: 10.3390/nano10081609] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 12/27/2022]
Abstract
Angiogenesis (or the development of new blood vessels) is a key event in tissue engineering and regenerative medicine; thus, a number of biomaterials have been developed and combined with stem cells and/or bioactive molecules to produce three-dimensional (3D) pro-angiogenic constructs. Among the various biomaterials, electrospun nanofibrous scaffolds offer great opportunities for pro-angiogenic approaches in tissue repair and regeneration. Nanofibers made of natural and synthetic polymers are often used to incorporate bioactive components (e.g., bioactive glasses (BGs)) and load biomolecules (e.g., vascular endothelial growth factor (VEGF)) that exert pro-angiogenic activity. Furthermore, seeding of specific types of stem cells (e.g., endothelial progenitor cells) onto nanofibrous scaffolds is considered as a valuable alternative for inducing angiogenesis. The effectiveness of these strategies has been extensively examined both in vitro and in vivo and the outcomes have shown promise in the reconstruction of hard and soft tissues (mainly bone and skin, respectively). However, the translational of electrospun scaffolds with pro-angiogenic molecules or cells is only at its beginning, requiring more research to prove their usefulness in the repair and regeneration of other highly-vascularized vital tissues and organs. This review will cover the latest progress in designing and developing pro-angiogenic electrospun nanofibers and evaluate their usefulness in a tissue engineering and regenerative medicine setting.
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Affiliation(s)
- Simin Nazarnezhad
- Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad 917794-8564, Iran;
| | - Francesco Baino
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Hae-Won Kim
- Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan 31116, Korea;
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan 31116, Korea
| | - Thomas J. Webster
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA;
| | - Saeid Kargozar
- Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad 917794-8564, Iran;
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14
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Diken ME, Kizilduman BK, Yilmaz Kardaş B, Doğan EE, Doğan M, Turhan Y, Doğan S. Synthesis, characterization, and their some chemical and biological properties of PVA/PAA/nPS hydrogel nanocomposites: Hydrogel and wound dressing. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520921474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The nanocomposite hydrogels were prepared by dispersing of the nanopomegranate seed particles into poly(vinyl alcohol)/poly(acrylic acid) blend matrix in an aqueous medium by the solvent casting method. These hydrogels were characterized using scanning electron microscopy, Fourier transform infrared spectra, differential scanning calorimetry, and optical contact angle instruments. The nanopomegranate seed, blend, and hydrogel nanocomposites were tested for microbial activity. In addition, cytocompatibilities of these blend and hydrogel nanocomposites/composites were tested on human lymphocyte with in vitro MTS cell viability assays. Fourier transform infrared spectra revealed that esterification reaction took place among functional groups in the structure of poly(vinyl alcohol) and poly(acrylic acid). The hydrophilic properties of all hydrogels decreased with increasing nanopomegranate seed content. The mean diameters of the nanopomegranate seed particles were about 88 nm. Nanopomegranate seed particles demonstrated antibacterial properties against gram-positive bacteria, Staphylococcus aureus, and gram-negative bacteria, Escherichia coli. The lymphocyte viabilities increased after addition of nanopomegranate seeds into the polymer blend. The swelling behavior of blend and hydrogels was dependent on the cross-linking density created by the reaction between poly(vinyl alcohol)/poly(acrylic acid) blend and nanopomegranate seed. Scanning electron microscopy images were highly consistent with Fourier transform infrared spectra, differential scanning calorimetry, and antibacterial activity results.
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Affiliation(s)
- Mehmet Emin Diken
- Science and Technology Application and Research Center, Balikesir University, Balikesir, Turkey
| | - Berna Koçer Kizilduman
- Science and Technology Application and Research Center, Balikesir University, Balikesir, Turkey
| | - Begümhan Yilmaz Kardaş
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
| | - Enes Emre Doğan
- Faculty of Medicine, İstanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Mehmet Doğan
- Department of Chemistry, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
| | - Yasemin Turhan
- Department of Chemistry, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
| | - Serap Doğan
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
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15
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Mohamed DS, Abd El-Baky RM, Sandle T, Mandour SA, Ahmed EF. Antimicrobial Activity of Silver-Treated Bacteria against other Multi-Drug Resistant Pathogens in Their Environment. Antibiotics (Basel) 2020; 9:antibiotics9040181. [PMID: 32326384 PMCID: PMC7235873 DOI: 10.3390/antibiotics9040181] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/08/2020] [Accepted: 04/10/2020] [Indexed: 11/16/2022] Open
Abstract
Silver is a potent antimicrobial agent against a variety of microorganisms and once the element has entered the bacterial cell, it accumulates as silver nanoparticles with large surface area causing cell death. At the same time, the bacterial cell becomes a reservoir for silver. This study aims to test the microcidal effect of silver-killed E. coli O104: H4 and its supernatant against fresh viable cells of the same bacterium and some other species, including E. coli O157: H7, Multidrug Resistant (MDR) Pseudomonas aeruginosa and Methicillin Resistant Staphylococcus aureus (MRSA). Silver-killed bacteria were examined by Transmission Electron Microscopy (TEM). Agar well diffusion assay was used to test the antimicrobial efficacy and durability of both pellet suspension and supernatant of silver-killed E. coli O104:H4 against other bacteria. Both silver-killed bacteria and supernatant showed prolonged antimicrobial activity against the tested strains that extended to 40 days. The presence of adsorbed silver nanoparticles on the bacterial cell and inside the cells was verified by TEM. Silver-killed bacteria serve as an efficient sustained release reservoir for exporting the lethal silver cations. This promotes its use as a powerful disinfectant for polluted water and as an effective antibacterial which can be included in wound and burn dressings to overcome the problem of wound contamination.
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Affiliation(s)
- Doaa Safwat Mohamed
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
| | - Rehab Mahmoud Abd El-Baky
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
- Microbiology and Immunology Department, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
- Correspondence:
| | - Tim Sandle
- School of Health Sciences, Division of Pharmacy & Optometry, University of Manchester, Manchester M13 9NT, UK;
| | - Sahar A. Mandour
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
| | - Eman Farouk Ahmed
- Microbiology and Immunology Department, Faculty of Pharmacy, Deraya University, Minia 11566, Egypt; (D.S.M.); (S.A.M.); (E.F.A.)
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16
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Bardania H, Mahmoudi R, Bagheri H, Salehpour Z, Fouani MH, Darabian B, Khoramrooz SS, Mousavizadeh A, Kowsari M, Moosavifard SE, Christiansen G, Javeshghani D, Alipour M, Akrami M. Facile preparation of a novel biogenic silver-loaded Nanofilm with intrinsic anti-bacterial and oxidant scavenging activities for wound healing. Sci Rep 2020; 10:6129. [PMID: 32273549 PMCID: PMC7145826 DOI: 10.1038/s41598-020-63032-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 03/24/2020] [Indexed: 12/20/2022] Open
Abstract
To eliminate the microbial infection from an injury site, various modalities have been developed such as dressings and human skin substitutes. However, the high amount of reactive oxygen species, microbial infection, and damaging extracellular matrix remain as the main challenges for the wound healing process. In this study, for the first time, green synthesized silver nanoparticles (AgNPs) using Teucrium polium extract were embedded in poly lactic acid/poly ethylene glycol (PLA/PEG) film to provide absorbable wound dressing, with antioxidant and antibacterial features. The physicochemical analysis demonstrated, production of AgNPs with size approximately 32.2 nm and confirmed the presence of phytoconstituents on their surface. The antibacterial assessments exhibited a concentration-dependent sensitivity of Staphylococcus aureus and Pseudomonas aeruginosa toward biosynthesized AgNPs, which showed a suitable safety profile in human macrophage cells. Furthermore, oxidant scavenging assays demonstrated exploitation of plant extract as a reducing agent, endows antioxidant activity to biogenic AgNPs. The formation of PLA/PEG nanofilm and entrapment of AgNPs into their matrix were clearly confirmed by scanning electron microscopy. More importantly, antibacterial examination demonstrated that the introduction of biogenic AgNPs into PLA/PEG nanofibers led to complete growth inhibition of P. aeruginosa and S. aureus. In summary, the simultaneous antioxidant activity and antimicrobial activity of the novel biogenic AgNPs/PLA/PEG nanofilm showed its potential for application as wound dressing.
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Affiliation(s)
- Hassan Bardania
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
- Medicinal Plant Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
- Clinical Research Development Unit, Imamsajad Hospital, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Reza Mahmoudi
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Hamed Bagheri
- Faculty of Interdisciplinary Science and Technology, Tarbiat Modares University, Tehran, Iran
| | - Zeinab Salehpour
- Medicinal Plant Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Mohamad Hassan Fouani
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Bita Darabian
- Faculty of Interdisciplinary Science and Technology, Tarbiat Modares University, Tehran, Iran
| | | | - Ali Mousavizadeh
- Social Determinants of Health Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Majid Kowsari
- Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Seyyed Ebrahim Moosavifard
- Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran
| | | | - Danesh Javeshghani
- Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Mohsen Alipour
- Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran.
| | - Mohammad Akrami
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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17
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Lopez K, Ravula S, Pérez RL, Ayala CE, Losso JN, Janes ME, Warner IM. Hyaluronic Acid-Cellulose Composites as Patches for Minimizing Bacterial Infections. ACS OMEGA 2020; 5:4125-4132. [PMID: 32149241 PMCID: PMC7057694 DOI: 10.1021/acsomega.9b03852] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
A facile method was used to synthesize biocomposites containing differing ratios of hyaluronic acid (HA) and cellulose (CEL). Based on the properties of the individual polymers, the resultant composite materials may have potentially great wound care properties. In the method outlined here, 1-butyl-3-methylimidazolium chloride ([Bmim][Cl]), a simple ionic liquid, was used as the sole solvent without chemical modifiers to dissolve the biopolymers at ratios of 1:1 and 2:1 HA to CEL. This method was completely recyclable since the ionic liquid, [Bmim][Cl], can be recovered. Results from spectroscopic measurements [Fourier transform infrared (FT-IR) and X-ray diffraction (XRD)] confirm the interaction between HA and CEL. Scanning electron microscopy (SEM) images reflect differing biopolymer ratios and the resulting impact on the texture and porosity of these composite materials. The composites exhibited high swelling capacity in various media. These composites were also drug-loaded to examine drug release properties for greater potential in combating Staphylococcus aureus infections.
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Affiliation(s)
- Kelsey
M. Lopez
- Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Sudhir Ravula
- Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
- Department
of Oral and Craniofacial Biology, School of Dentistry, Louisiana State University Health Science Center, New Orleans, Louisiana 70119, United States
| | - Rocío L. Pérez
- Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Caitlan E. Ayala
- Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Jack N. Losso
- Department
of Food Sciences, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Marlene E. Janes
- Department
of Food Sciences, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Isiah M. Warner
- Department
of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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18
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Zhu Y, Yao Z, Liu Y, Zhang W, Geng L, Ni T. Incorporation of ROS-Responsive Substance P-Loaded Zeolite Imidazolate Framework-8 Nanoparticles into a Ca 2+-Cross-Linked Alginate/Pectin Hydrogel for Wound Dressing Applications. Int J Nanomedicine 2020; 15:333-346. [PMID: 32021183 PMCID: PMC6980861 DOI: 10.2147/ijn.s225197] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 01/02/2020] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Wound healing, especially of extensive full-thickness wounds, is one of the most difficult problems in clinical studies. In this study, we prepared a novel substance P (SP)-delivery system using zeolite imidazolate framework-8 (ZIF-8) nanoparticles. METHODS We synthesized ZIF-8 nanoparticles using a modified biomimetic mineralization method. We then coated SP-loaded ZIF-8 nanoparticles (SP@ZIF-8) with polyethylene glycol-thioketal (PEG-TK) to fabricate SP@ZIF-8-PEG-TK nanoparticles, and encapsulated them in injectable hydrogel composed of sodium alginate and pectin and cross-linked using calcium chloride. The final hydrogel wound dressing containing SP@ZIF-8-PEG-TK nanoparticles was called SP@ZIF-8-PEG-TK@CA. RESULTS The fabricated ZIF-8 nanoparticles had high SP-loading efficiency. SP-release assay showed that the SP@ZIF-8-PEG-TK nanoparticles maintained drug activity and showed responsive release under stimulation by reactive oxygen species. The SP@ZIF-8-PEG-TK nanoparticles promoted proliferation of human dermal fibroblasts, up-regulated expression levels of inflammation-related genes in macrophages, and exhibited favorable cytocompatibility in vitro. Full-thickness excision wound models in vivo confirmed that SP@ZIF-8-PEG-TK@CA dressings had excellent wound-healing efficacy by promoting an early inflammatory response and subsequent M2 macrophage polarization in the wound-healing process. CONCLUSION In conclusion, these findings indicated that SP@ZIF-8-PEG-TK@CA dressings might be useful for wound dressing applications in the clinic.
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Affiliation(s)
- Yiming Zhu
- Department of General Surgery, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China
| | - Zuochao Yao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China
| | - Yushu Liu
- Department of Burns and Plastic Surgery, Binzhou Medical University Hospital, Binzhou City, Shandong Province, China
| | - Wen Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China
| | - Lele Geng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China
| | - Tao Ni
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Huangpu, Shanghai, China
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19
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Cheng YC, Guo SL, Chung KD, Hu WW. Electrical Field-Assisted Gene Delivery from Polyelectrolyte Multilayers. Polymers (Basel) 2020; 12:E133. [PMID: 31935814 PMCID: PMC7022892 DOI: 10.3390/polym12010133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/19/2019] [Accepted: 01/01/2020] [Indexed: 12/12/2022] Open
Abstract
To sustain gene delivery and elongate transgene expression, plasmid DNA and cationic nonviral vectors can be deposited through layer-by-layer (LbL) assembly to form polyelectrolyte multilayers (PEMs). Although these macromolecules can be released for transfection purposes, their entanglement only allows partial delivery. Therefore, how to efficiently deliver immobilized genes from PEMs remains a challenge. In this study, we attempt to facilitate their delivery through the pretreatment of the external electrical field. Multilayers of polyethylenimine (PEI) and DNA were deposited onto conductive polypyrrole (PPy), which were placed in an aqueous environment to examine their release after electric field pretreatment. Only the electric field perpendicular to the substrate with constant voltage efficiently promoted the release of PEI and DNA from PEMs, and the higher potential resulted in the more releases which were enhanced with treatment time. The roughness of PEMs also increased after electric field treatment because the electrical field not only caused electrophoresis of polyelectrolytes and but also allowed electrochemical reaction on the PPy electrode. Finally, the released DNA and PEI were used for transfection. Polyplexes were successfully formed after electric field treatment, and the transfection efficiency was also improved, suggesting that this electric field pretreatment effectively assists gene delivery from PEMs and should be beneficial to regenerative medicine application.
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Affiliation(s)
- Yu-Che Cheng
- Proteomics Laboratory, Department of Medical Research, Cathay General Hospital, Taipei 10630, Taiwan;
- Department of Biomedical Sciences and Engineering, National Central University, Zhongli District, Taoyuan City 32001, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan;
| | - Shu-Lin Guo
- School of Medicine, Fu Jen Catholic University, New Taipei City 24205, Taiwan;
- Department of Anesthesiology, Cathay General Hospital, Taipei 10630, Taiwan
- Department of Anesthesiology, Tri-Service General Hospital and National Defense Medical Center, Taipei 11490, Taiwan
| | - Kun-Da Chung
- Department of Chemical and Materials Engineering, National Central University, Zhongli District, Taoyuan City 32001, Taiwan
| | - Wei-Wen Hu
- Department of Chemical and Materials Engineering, National Central University, Zhongli District, Taoyuan City 32001, Taiwan
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20
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Zandi N, Lotfi R, Tamjid E, Shokrgozar MA, Simchi A. Core-sheath gelatin based electrospun nanofibers for dual delivery release of biomolecules and therapeutics. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 108:110432. [PMID: 31923974 DOI: 10.1016/j.msec.2019.110432] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/27/2019] [Accepted: 11/13/2019] [Indexed: 02/06/2023]
Abstract
Coaxial electrospinning with the ability to use simultaneously two separate solvents provides a promising strategy for drug delivery. Nevertheless, controlled release of hydrophilic and sensitive therapeutics from slow biodegradable polymers is still challenging. To address this gap, we fabricated core-sheath fibers for dual delivery of lysozyme, as a model protein, and phenytoin sodium as a small therapeutic molecule. The sheath was processed by a gelatin solution while the core fibers were fabricated from an aqueous gelatin/PVA solution. Microstructural studies by transmission and scanning electron microscopy reveal the formation of homogeneous core-sheath nanofibers with an outer and inner diameter of 180 ± 48 nm and 106 ± 30 nm, respectively. Thermal gravimetric analysis determines that the mass loss of the core-sheath fibers fall between the mass loss values of individual sheath and core fibers. Swelling studies indicate higher water absorption of the core-sheath mat compared to the separate sheath and core membranes. In vitro drug release studies in Phosphate Buffered Saline (PBS) determine sustained release of the therapeutics from the core-sheath structure. The release trails three stages including non-Fickian diffusion at the early stage followed by the Fickian diffusion mechanism. The present study shows a useful approach to design core-sheath nanofibrous membranes with controlled and programmable drug release profiles.
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Affiliation(s)
- Nooshin Zandi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran
| | - Roya Lotfi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran
| | - Elnaz Tamjid
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | | | - Abdolreza Simchi
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran; Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-11155, Tehran, Iran.
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21
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Mora-Boza A, Aparicio FJ, Alcaire M, López-Santos C, Espinós JP, Torres-Lagares D, Borrás A, Barranco A. Multifunctional antimicrobial chlorhexidine polymers by remote plasma assisted vacuum deposition. Front Chem Sci Eng 2019. [DOI: 10.1007/s11705-019-1803-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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22
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Aavani F, Khorshidi S, Karkhaneh A. A concise review on drug-loaded electrospun nanofibres as promising wound dressings. J Med Eng Technol 2019; 43:38-47. [DOI: 10.1080/03091902.2019.1606950] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Farzaneh Aavani
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Sajedeh Khorshidi
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Akbar Karkhaneh
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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23
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Abstract
Platinum has been a widely used metal for a variety of implanted medical devices, because of its inertness, low corrosion rate, high biocompatibility, high electric conductivity, and good mechanical stability. A highly desirable property still in need to be addressed is the tailoring of drug-delivery ability to that metal. This is needed in order to treat infections due to the process of implanting, to treat postoperation pain, and to prevent blood clotting. Can Pt itself serve as a delivery matrix? A review on metallic implants (Lyndon, J. A.; Boyd, B. J.; Birbilis, N. Metallic implant drug/device combinations for controlled drug release in orthopaedic applications. J. Control. Release 2014, 179, 63-75) proposes that "Metals themselves can be used for delivering pharmaceutics" but adds that "there has been no current research into [that] possibility" despite its advantages. Here we present a solution to that challenge and show a new method of using an inert metal as a 3D matrix from within which entrapped drug molecules are released. This new type of drug-delivery system is fabricated by the methodolodgy of entrapment of molecules within metals, resulting in various drugs@Pt. Specifically the following drugs have been entrapped and released: the pain-killer and platelet-inhibitor nonsteroidal anti-inflammatory drugs (NSAIDs) ibuprofen and naproxen, the antibiotic ciprofloxacin, and the antiseptic chlorhexidine. The delivery profiles of all biocomposites were studied in two forms, powders and pressed discs, showing, in general, fast followed by slow first order release profiles. It is shown that the delivery kinetics can be tailored by changing the entrapment process, by applying different pressures in the disc preparation, and by changing the delivery temperature. The latter was also used to determine the activation energy for the release. Full characterization of the metallic biomaterials is provided, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDAX), thermogravimetric analysis (TGA), and surface area/porosity analysis.
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Affiliation(s)
- Barak Menagen
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - David Avnir
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
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Cobalt-mediated multi-functional dressings promote bacteria-infected wound healing. Acta Biomater 2019; 86:465-479. [PMID: 30599244 DOI: 10.1016/j.actbio.2018.12.048] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/21/2018] [Accepted: 12/28/2018] [Indexed: 01/13/2023]
Abstract
Wound dressings with multiple functions are required to meet the complexity of the wound healing process. The multifunctionality often leads to an increase in the complexity and difficulty in dressing preparation. To surmount this problem, we used a facile preparation and fabrication process to fabricate a multi-functional dressing by integrating four widely accessible materials: plain gauze, sodium alginate (SA), Ca2+ and Co2+. Firstly, mixed Ca2+/Co2+ ion solutions with different concentration were applied to gauzes. After drying, SA solution was added to ionized gauze and Co2+-Ca2+/Gauze/SA (Ion-GSA) composite dressings were formed easily. In vitro results showed that all Ion-GSA dressings exhibited strong mechanical properties, uniform dispersion and sustained release of Ca2+ and Co2+, and the ability to retain moisture and absorb wound exudate. Besides the above advantages, dressings prepared with 0.25 g/L Co2+ and 4 g/L Ca2+ (Co2+0.25-Ca2+4 GSA composite dressings) exhibited the best overall effect for inducing a hypoxia-like response, and favorable cytocompatibility, hemostatic property and antibacterial activity. In vivo wound healing assays revealed that Co2+0.25-Ca2+4 GSA composite dressings inhibited bacterial growth, increased local Hypoxia-inducible factor-1α (HIF-1α), vascular endothelial growth factor (VEGF), transforming growth factor-β1 (TGF-β1) protein expression, and accelerated full-thickness skin wound healing in mouse bacterial-infected wound model. The quick healing wounds had improved angiogenesis, macrophages regulation, re-epithelialization and dense collagen deposition. Collectively, our results indicated that Co2+0.25-Ca2+4 GSA composite dressings promote wound healing. STATEMENT OF SIGNIFICANCE: Wound dressings with integrated functionalities are required to meet complex clinical requirements. However, there is often a trade-off between reducing preparation complexity and increasing the multifunctionality of the dressing's properties. In this study, we prepared multifunctional composite dressings by a facile preparation process using widely accessible materials. The composite dressings possessed the mechanical strength of gauze, had the effective wound exudate absorption, moisture maintenance and hemostatic property capacity of calcium alginate hydrogels, and had the hypoxia-like induction and the antimicrobial effects of Co2+. These functions all together promote bacteria-infected wound healing. Thus, we believed that the composite dressings can be widely applied in skin wound repair duo to their facile preparation method and good therapeutic effect.
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He C, Ye T, Teng W, Fang Z, Ruan WS, Liu G, Chen H, Sun J, Hui L, Sheng F, Pan D, Yang C, Zheng Y, Luo MB, Yao K, Wang B. Bioinspired Shear-Flow-Driven Layer-by-Layer in Situ Self-Assembly. ACS NANO 2019; 13:1910-1922. [PMID: 30747513 DOI: 10.1021/acsnano.8b08151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Layer-by-layer (LbL) assembly is widely applied as a coating technique for the nanoscale control of architecture and related properties. However, its translational applications are limited by the time-consuming and laborious nature of the process. Inspired by the blood-clotting process, herein, we develop a shear-flow-driven LbL (SF-LbL) self-assembly approach that accelerates the adsorption rate of macromolecules by mechanically configuring the polymer chain via a coil-stretch transition, which effectively simplifies and speeds the diffusion-controlled assembly process. The structural characteristics and surface homogeneity of the SF-LbL films are improved, and diverse three-dimensional structures can be achieved. Functional SF-LbL-assembled surfaces for corneal modification are successfully fabricated, and the surface of wounded rat corneas and skin can be directly decorated in situ with SF-LbL nanofilms due to the advantages of this approach. Furthermore, in situ SF-LbL self-assembly has promise as a simple approach for the wound dressing for interventional therapeutics in the clinic, as illustrated by the successful in situ fabrication of drug-free layers consisting of chitosan and heparin on the dorsal skin of diabetic mice to rescue defective wound healing. This bioinspired self-assembly approach is expected to provide a robust and versatile platform with which to explore the surface engineering of nanofilms in science, engineering, and medicine.
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Affiliation(s)
- Chuanjiang He
- Institute of Translational Medicine , Zhejiang University , Hangzhou 310029 , China
| | - Tingting Ye
- Institute of Translational Medicine , Zhejiang University , Hangzhou 310029 , China
| | | | | | | | - Guowu Liu
- Institute of Translational Medicine , Zhejiang University , Hangzhou 310029 , China
| | | | - Jizeng Sun
- Institute of Translational Medicine , Zhejiang University , Hangzhou 310029 , China
| | - Lanlan Hui
- Institute of Translational Medicine , Zhejiang University , Hangzhou 310029 , China
| | | | | | - Chunming Yang
- Shanghai Synchrotron Radiation Facility , Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201204 , China
| | | | | | | | - Ben Wang
- Institute of Translational Medicine , Zhejiang University , Hangzhou 310029 , China
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Experimental study on the use of a chlorhexidine-loaded carboxymethylcellulose gel as antibacterial coating for hernia repair meshes. Hernia 2019; 23:789-800. [PMID: 30806886 DOI: 10.1007/s10029-019-01917-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 02/19/2019] [Indexed: 12/16/2022]
Abstract
PURPOSE Biomaterials with an antimicrobial coating could avoid mesh-associated infection following hernia repair. This study assesses the use of a chlorhexidine-loaded carboxymethylcellulose gel in a model of Staphylococcus aureus mesh infection. METHODS A 1% carboxymethylcellulose gel containing 0.05% chlorhexidine was prepared and tested in vitro and in vivo. The in vitro tests were antibacterial activity (S. aureus; agar diffusion test) and gel cytotoxicity compared to aqueous 0.05% chlorhexidine (fibroblasts; alamarBlue). For the in vivo study, partial abdominal wall defects (5 × 2 cm) were created in New Zealand white rabbits (n = 15) and inoculated with 0.25 mL of S. aureus (106 CFU/mL). Defects were repaired with a lightweight polypropylene mesh (Optilene) without coating (n = 3) or coated with a carboxymethylcellulose gel (n = 6) or chlorhexidine-loaded carboxymethylcellulose gel (n = 6). Fourteen days after surgery, bacterial adhesion to the implant (sonication, immunohistochemistry), host tissue incorporation (light microscopy) and macrophage reaction (immunohistochemistry) were examined. RESULTS Carboxymethylcellulose significantly reduced the toxicity of chlorhexidine (p < 0.001) without limiting its antibacterial activity. While control and gel-coated implants were intensely contaminated, the chlorhexidine-gel-coated meshes showed a bacteria-free surface, and only one specimen showed infection signs. The macrophage reaction in this last group was reduced compared to the control (p < 0.05) and gel groups. CONCLUSIONS When incorporated in the carboxymethylcellulose gel, chlorhexidine showed reduced toxicity yet maintained its bactericidal effect at the surgery site. Our findings suggest that this antibacterial gel-coated polypropylene meshes for hernia repair prevent bacterial adhesion to the mesh surface and have no detrimental effects on wound repair.
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Wen S, Hu Y, Zhang Y, Huang S, Zuo Y, Min Y. Dual-functional core-shell electrospun mats with precisely controlled release of anti-inflammatory and anti-bacterial agents. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:514-522. [PMID: 30948088 DOI: 10.1016/j.msec.2019.02.076] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 02/06/2019] [Accepted: 02/20/2019] [Indexed: 01/11/2023]
Abstract
Acute wounds are worldwide problems affecting millions of people and causing heavy economic burden to national healthcare systems. Herein, we describe novel wound dressing materials relying on core/shell electrospun mats incorporated with flurbiprofen and vancomycin for achieving programmable release of anti-inflammatory and anti-bacterial agents. The shell matrix of nanofibers consisted of polyethylene oxide while the core matrix was made from a blend of silk and collagen. Several optimal mat architectures were engineered with distinct configurations, of which release profiles displayed an exponential trend, which indicates a first-order process following Fickian diffusion behavior. The flurbiprofen release lasted from 2 to 6 days, which was much faster compared to the one of vancomycin prolonged up to about 20 days. Mechanical data indicated tensile modulus, tensile strength, elongation before break of core/shell electrospun mats became enhanced or comparable to those for human skin after methanol vapor treatment. Desirable release kinetics and mechanical characteristics achieved by novel core/shell electrospun mats were attributable to induced enrichment of β-sheet phase in silk via methanol vapor treatment as well as water annealing process with time and judicious selections for matrix materials and mat configurations. The design principles considered in this study successfully addressed a range of inflammation and infection requirements in wound healing, potentially guiding construction of other biomedical coatings and devices.
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Affiliation(s)
- Shihao Wen
- Department of Polymer Engineering, University of Akron, Akron, OH 44325, USA
| | - Yupeng Hu
- Department of Polymer Engineering, University of Akron, Akron, OH 44325, USA
| | - Yuanzhong Zhang
- Department of Polymer Engineering, University of Akron, Akron, OH 44325, USA
| | - Shifeng Huang
- Department of Polymer Engineering, University of Akron, Akron, OH 44325, USA
| | - Yuchen Zuo
- Department of Polymer Engineering, University of Akron, Akron, OH 44325, USA
| | - Younjin Min
- Department of Polymer Engineering, University of Akron, Akron, OH 44325, USA.
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Gao Y, Song N, Liu W, Dong A, Wang YJ, Yang YW. Construction of Antibacterial N-Halamine Polymer Nanomaterials Capable of Bacterial Membrane Disruption for Efficient Anti-Infective Wound Therapy. Macromol Biosci 2019; 19:e1800453. [PMID: 30645044 DOI: 10.1002/mabi.201800453] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/18/2018] [Indexed: 01/31/2023]
Abstract
The increasing occurrence of bacterial infection at the wound sites is a serious global problem, demanding the rapid development of new antibacterial materials for wound dressing to avoid the abuse of antibiotics and thereby antibiotic resistance. In this work, the authors first report on antibacterial N-halamine polymer nanomaterials based on a strategic copolymerization of 3-allyl-5,5-dimethylhydantoin (ADMH) and methyl methacrylate (MMA), which exhibits in vitro and in vivo antimicrobial efficacy against pathogenic bacteria including Staphylococcus aureus and Escherichia coli. Particularly, when a biological evaluation is run for wound therapy, the N-halamine polymer nanomaterials exhibit a powerful antibacterial efficiency and wound healing ability after a series of histological examination of mouse wound. After the evaluation of biological and chemical surroundings, the proposed four-stage mechanism suggests that, with unique antibacterial NCl bonds, the N-halamine polymer nanomaterials can disrupt the bacterial membrane, as a result causing intracellular content leaked out and thereby cell death. Based on the synergistic action of antibacterial and wound therapy, the N-halamine polymer nanomaterials are expected to be promising as wound dressing materials in medical healing and biomaterials.
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Affiliation(s)
- Yangyang Gao
- Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Nan Song
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Wenxin Liu
- Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Alideertu Dong
- Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, P. R. China
| | - Yan-Jie Wang
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, P. R. China
| | - Ying-Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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Mogrovejo-Valdivia A, Rahmouni O, Tabary N, Maton M, Neut C, Martel B, Blanchemain N. In vitro evaluation of drug release and antibacterial activity of a silver-loaded wound dressing coated with a multilayer system. Int J Pharm 2018; 556:301-310. [PMID: 30553954 DOI: 10.1016/j.ijpharm.2018.12.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 12/07/2018] [Accepted: 12/10/2018] [Indexed: 11/29/2022]
Abstract
The goal of the study was to elaborate an antibacterial silver wound dressing covered by a protective coating that would prevent silver diffusion toward skin without losing its biocide properties. Therefore, non woven polyethyleneterephtalate (PET) textiles were pre-treated by two types of polysaccharides - chitosan and cyclodextrin - both crosslinked with citric acid by a pad/dry/cure process. Both types of resulting thermofixed textiles carrying the citrate crosslinks were then impregnated in silver solution followed by a thermal treatment and were finally coated by Layer-by-Layer (L-b-L) deposition of a polyelectrolyte multilayer (PEM) film consisting of anionic water-soluble poly-cyclodextrin and cationic chitosan. The influence of the process parameters was investigated in terms of silver adsorption capacity, PEM system build-up, silver kinetics of release and antibacterial activity. We demonstrate i) the utility of the intermediate thermal treatment step in the reduction of silver leakage in the polyelectrolyte solutions used in the L-b-L process, ii) that silver adsorption on the preliminary thermofixed layers did not affect the PEM system build-up, iii) the slowing down of silver release kinetic thanks to the PEM coating, iv) the preservation of the antibacterial activity despite the PEM coating.
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Affiliation(s)
- Alejandra Mogrovejo-Valdivia
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France
| | - Oumaira Rahmouni
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France; Univ. Lille, INSERM, CHU Lille, U995- LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Nicolas Tabary
- Univ. Lille, CNRS UMR8207, UMET - Unité Matériaux et Transformations, F-59655 Villeneuve D'Ascq, France
| | - Mickael Maton
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France
| | - Christel Neut
- Univ. Lille, INSERM, CHU Lille, U995- LIRIC - Lille Inflammation Research International Center, F-59000 Lille, France
| | - Bernard Martel
- Univ. Lille, CNRS UMR8207, UMET - Unité Matériaux et Transformations, F-59655 Villeneuve D'Ascq, France
| | - Nicolas Blanchemain
- Univ. Lille, INSERM, CHU Lille, U1008 - Controlled Drug Delivery Systems and Biomaterials, F-59000 Lille, France.
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Choi G, Jeong GM, Oh MS, Joo M, Im SG, Jeong KJ, Lee E. Robust Thin Film Surface with a Selective Antibacterial Property Enabled via a Cross-Linked Ionic Polymer Coating for Infection-Resistant Medical Applications. ACS Biomater Sci Eng 2018; 4:2614-2622. [PMID: 33435124 DOI: 10.1021/acsbiomaterials.8b00241] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Fabrication of new antibacterial surfaces has become a primary strategy for preventing device-associated infections (DAIs). Although considerable progress has recently been made in reducing DAIs, current antibacterial coating methods are technically complex and do not allow selective bacterial killing. Here, we propose novel anti-infective surfaces made of a cross-linked ionic polymer film that achieve selective bacteria killing while simultaneously favoring the survival of mammalian cells. A one-step polymerization process known as initiated chemical vapor deposition was used to generate a cross-linked ionic polymer film from 4-vinylbenzyl chloride and 2-(dimethylamino) ethyl methacrylate monomers in the vapor phase. In particular, the deposition process produced a polymer network with quaternary ammonium cross-linking sites, which provided the surface with an ionic moiety with an excellent antibacterial contact-killing property. This method confers substrate compatibility, which enables various materials to be coated with ionic polymer films for use in medical implants. Moreover, the ionic polymer-deposited surfaces supported the healthy growth of mammalian cells while selectively inhibiting bacterial growth in coculture models without any detectable cytotoxicity. Thus, the cross-linked ionic polymer-based antibacterial surface developed in this study can serve as an ideal platform for biomedical applications that require a highly sterile environment.
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Affiliation(s)
- Goro Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Gu Min Jeong
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Myung Seok Oh
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Munkyu Joo
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Ki Jun Jeong
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Eunjung Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Republic of Korea
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Novel murine model for delayed wound healing using a biological wound dressing with Pseudomonas aeruginosa biofilms. Microb Pathog 2018; 122:30-38. [PMID: 29842898 DOI: 10.1016/j.micpath.2018.05.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/24/2018] [Accepted: 05/24/2018] [Indexed: 11/24/2022]
Abstract
Bacterial biofilms impair healing in 60% of chronic skin wounds. Various animal models (mice, rats, rabbits, and pigs) have been developed to replicate biofilm infected wounds in vivo. We developed a sustained wound infection model by applying preformed Pseudomonas aeruginosa biofilms on a wound dressing to full-thickness murine skin wounds. We bathed a commercially available wound dressing in P. aeruginosa for 48 h, allowing a biofilm to establish on the dressing prior to application to the wound. Dressings were removed from the wounds after 3 days at which time the wound beds contained ∼108 bacterial cells per gram tissue. Significant numbers of P. aeruginosa persisted within the skin wounds for up to 21 days. Un-inoculated wounds reached closure between 9 and 12 days. In contrast, biofilm-inoculated wounds achieved closure between 18 and 21 days. Histologic analysis confirmed decreased re-epithelialization and collagen deposition, coupled with increased inflammation, in the biofilm-inoculated wounds compared to un-inoculated controls. This novel model of delayed healing and persistent infection of full-thickness murine skin wounds may provide a robust in vivo system in which to test novel treatments to prevent wound infection by bacterial biofilms.
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Qian Y, Zhou X, Sun H, Yang J, Chen Y, Li C, Wang H, Xing T, Zhang F, Gu N. Biomimetic Domain-Active Electrospun Scaffolds Facilitating Bone Regeneration Synergistically with Antibacterial Efficacy for Bone Defects. ACS APPLIED MATERIALS & INTERFACES 2018; 10:3248-3259. [PMID: 29172421 DOI: 10.1021/acsami.7b14524] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
To improve bone regeneration in oral microenvironment, we generated a novel biodegradable, antibacterial, and osteoconductive electrospun PLGA/PCL membrane as an ideal osteogenic scaffold. The novel three-layer membranes were structured with serial layers of electrospun chlorhexidine-doped-PLGA/PCL (PPC), PLGA/PCL (PP), and β-tricalcium phosphate-doped-PLGA/PCL (PPβ). To characterize osteoconductive properties of these membranes, MC3T3-E1 (MC) cultures were seeded onto the membranes for 14 days for evaluation of cell proliferation, morphology and gene/protein expression. In addition, MC cells were cultured onto different surfaces of the three-layer membranes, PPC layer facing MC cells (PPβ-PP-PPC) and PPβ layer facing MC cells (PPC-PP-PPβ) to evaluate surface-material effects. Membrane properties and structures were evaluated. Antibacterial properties against Streptococcus mutans and Staphylococcus aureus were determined. Scanning electron microscope demonstrated smaller interfiber spaces of PPC and PPβ-PP-PPC compared to PPβ, PPC-PP-PPβ, and PP. PPC and PPβ-PP-PPC exhibited hydrophilic property. The three-layer membranes (PPC-PP-PPβ and PPβ-PP-PPC) demonstrated significantly higher Young's modulus (94.99 ± 4.03 MPa and 92.88 ± 4.03 MPa) compared to PP (48.76 ± 18.15 MPa) or PPC (7.92 ± 3.97 MPa) (p < 0.05). No significant difference of cell proliferation was found among any groups at any time point (p > 0.05). Higher expression of integrins were detected at 12 h of cultures on PPC-PP-PPβ compared to the controls. Promoted osteoconductive effects of PPC-PP-PPβ were revealed by alkaline phosphatase assays and Western blot compared with the controls at 7 and 14 days. PPC, PPC-PP-PPβ and PPβ-PP-PPC exhibited a significantly wider antibacterial zone against the tested bacteria compared to PP and PPβ (p < 0.05). These results suggested that the three-layer electrospun membranes demonstrated superior properties: higher strength, better cell adhesion, and promoted osteoconductive properties compared to single-layer membrane: however, antibacterial properties were exhibited in three-layer electrospun membranes and chlorhexidine-doped single-layer membrane. We concluded that the novel three-layer membranes could be used as a biocompatible scaffold for intraoral bone regeneration due to its enhanced osteoconductive activity and antibacterial effect.
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Affiliation(s)
- Yunzhu Qian
- Center of Stomatology, The Second Affiliated Hospital of Soochow University , Suzhou 215004, People's Republic of China
| | - Xuefeng Zhou
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, People's Republic of China
| | - Hong Sun
- Xi'an Jiaotong University Suzhou Research Institute , Suzhou 215123, People's Republic of China
| | - Jianxin Yang
- Center of Stomatology, The Second Affiliated Hospital of Soochow University , Suzhou 215004, People's Republic of China
| | - Yi Chen
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, People's Republic of China
| | - Chao Li
- Xi'an Jiaotong University Suzhou Research Institute , Suzhou 215123, People's Republic of China
| | - Hongjin Wang
- Xi'an Jiaotong University Suzhou Research Institute , Suzhou 215123, People's Republic of China
| | - Tong Xing
- Xi'an Jiaotong University Suzhou Research Institute , Suzhou 215123, People's Republic of China
| | - Feimin Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University , Nanjing 210029, People's Republic of China
| | - Ning Gu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, People's Republic of China
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Salvador MA, Sousa CP, Morais S, Lima-Neto PD, Correia AN, Homem-de-Mello P. Evaluation of degradation mechanism of chlorhexidine by means of Density Functional Theory calculations. Comput Biol Chem 2017; 71:82-88. [PMID: 28987295 DOI: 10.1016/j.compbiolchem.2017.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 09/26/2017] [Accepted: 10/01/2017] [Indexed: 11/28/2022]
Abstract
Chlorhexidine (CHD), a germicidal drug, has degradation products that can be hemotoxic and carcinogenic. However, there is no consensus in literature about the degradation pathway. In order to shed light on that mechanism, we have employed Density Functional Theory to study reactants, in different protonation states, products and intermediates involved in the different pathways. Based on free energy values comparison and frontier molecular orbital analysis, we have obtained the most stable structures in each protonation state. CHD in saturated form has HOMO localized in one p-chloroaniline, and, due to molecule's symmetry, HOMO-1 has contributions from the other side of the molecule, but mainly from the biguanide portion of the molecule, instead of from the p-chloroaniline. For the saturated form, we have studied two possible degradation pathways, starting from the monoprotonated structure, and three pathways starting from the neutral structure. We found out that the mechanisms proposed in literature, whose pathways lead to p-chloroaniline (PCA) formation in a smaller number of steps, are more likely than the mechanisms with more intermediate steps or pathways that do not predict PCA formation. Also, based on free energy results, we have found that the formation of another sub-product (PBG-AU) is favorable as well.
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Affiliation(s)
- Michele Aparecida Salvador
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Av. dos Estados, 5001, Bloco B, sala 1017, 09210-580, Santo André - SP, Brazil.
| | - Camila Pinheiro Sousa
- Departamento de Química Analítica e Físico-Química, Centro de Ciências, Universidade Federal do Ceará, Bloco 940, Campus do Pici, 60440-900, Fortaleza - CE, Brazil
| | - Simone Morais
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072, Porto, Portugal
| | - Pedro de Lima-Neto
- Departamento de Química Analítica e Físico-Química, Centro de Ciências, Universidade Federal do Ceará, Bloco 940, Campus do Pici, 60440-900, Fortaleza - CE, Brazil
| | - Adriana Nunes Correia
- Departamento de Química Analítica e Físico-Química, Centro de Ciências, Universidade Federal do Ceará, Bloco 940, Campus do Pici, 60440-900, Fortaleza - CE, Brazil
| | - Paula Homem-de-Mello
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Av. dos Estados, 5001, Bloco B, sala 1017, 09210-580, Santo André - SP, Brazil.
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Naik K, Kowshik M. The silver lining: towards the responsible and limited usage of silver. J Appl Microbiol 2017. [DOI: 10.1111/jam.13525] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- K. Naik
- Department of Biological Sciences; BITS Pilani K K Birla Goa Campus; Zuarinagar Goa India
| | - M. Kowshik
- Department of Biological Sciences; BITS Pilani K K Birla Goa Campus; Zuarinagar Goa India
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Guerra AD, Rose WE, Hematti P, Kao WJ. Minocycline modulates NFκB phosphorylation and enhances antimicrobial activity against Staphylococcus aureus in mesenchymal stromal/stem cells. Stem Cell Res Ther 2017; 8:171. [PMID: 28732530 PMCID: PMC5521110 DOI: 10.1186/s13287-017-0623-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 06/05/2017] [Accepted: 06/28/2017] [Indexed: 02/06/2023] Open
Abstract
Background Mesenchymal stromal/stem cells (MSCs) have demonstrated pro-healing properties due to their anti-inflammatory, angiogenic, and even antibacterial properties. We have shown previously that minocycline enhances the wound healing phenotype of MSCs, and MSCs encapsulated in poly(ethylene glycol) and gelatin-based hydrogels with minocycline have antibacterial properties against Staphylococcus aureus (SA). Here, we investigated the signaling pathway that minocycline modulates in MSCs which results in their enhanced wound healing phenotype and determined whether preconditioning MSCs with minocycline has an effect on antimicrobial activity. We further investigated the in-vivo antimicrobial efficacy of MSC and antibiotic-loaded hydrogels in inoculated full-thickness cutaneous wounds. Methods Modulation of cell signaling pathways in MSCs with minocycline was analyzed via western blot, immunofluorescence, and ELISA. Antimicrobial efficacy of MSCs pretreated with minocycline was determined by direct and transwell coculture with SA. MSC viability after SA coculture was determined via a LIVE/DEAD® stain. Internalization of SA by MSCs pretreated with minocycline was determined via confocal imaging. All protein and cytokine analysis was done via ELISA. The in-vivo antimicrobial efficacy of MSC and antibiotic-loaded hydrogels was determined in Sprague–Dawley rats inoculated with SA. Two-way ANOVA for multiple comparisons was used with Bonferroni test assessment and an unpaired two-tailed Student’s t test was used to determine p values for all assays with multiple or two conditions, respectively. Results Minocycline leads to the phosphorylation of transcriptional nuclear factor-κB (NFκB), but not c-Jun NH2-terminal kinase (JNK) or mitogen-activated protein kinase (ERK). Inhibition of NFκB activation prevented the minocycline-induced increase in VEGF secretion. Preconditioning of MSCs with minocycline led to a reduced production of the antimicrobial peptide LL-37, but enhanced antimicrobial activity against SA via an increased production of IL-6 and SA internalization. MSC and antibiotic-loaded hydrogels reduced SA bioburden in inoculated wounds over 3 days and accelerated reepithelialization. Conclusions Minocycline modulates the NFκB pathway in MSCs that leads to an enhanced production of IL-6 and internalization of SA. This mechanism may have contributed to the in-vivo antibacterial efficacy of MSC and antibiotic-loaded hydrogels. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0623-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Alberto Daniel Guerra
- School of Pharmacy, Division of Pharmaceutical Sciences, Pharmacy Practice Division, University of Wisconsin-Madison, 777 Highland Avenue, 7123 Rennebohm Hall, Madison, WI, 53705, USA
| | - Warren E Rose
- School of Pharmacy, Division of Pharmaceutical Sciences, Pharmacy Practice Division, University of Wisconsin-Madison, 777 Highland Avenue, 7123 Rennebohm Hall, Madison, WI, 53705, USA
| | - Peiman Hematti
- School of Medicine and Public Health, Department of Medicine, Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, 1685 Highland Avenue, Madison, WI, 53705, USA
| | - W John Kao
- School of Pharmacy, Division of Pharmaceutical Sciences, Pharmacy Practice Division, University of Wisconsin-Madison, 777 Highland Avenue, 7123 Rennebohm Hall, Madison, WI, 53705, USA. .,College of Engineering, Department of Biomedical Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI, 53706, USA. .,School of Medicine and Public Health, Department of Surgery, University of Wisconsin-Madison, 1685 Highland Avenue, Madison, WI, 53705, USA. .,Present Address: 10/F Knowles Building, Pokfulam, Hong Kong.
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Effect of plasma surface treatment of poly(dimethylsiloxane) on the permeation of pharmaceutical compounds. J Pharm Anal 2017; 7:338-342. [PMID: 29404058 PMCID: PMC5790694 DOI: 10.1016/j.jpha.2017.05.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/15/2017] [Accepted: 05/15/2017] [Indexed: 12/16/2022] Open
Abstract
This paper addresses the modification of poly(dimethylsiloxane), i.e. PDMS, using plasma surface treatment and a novel application of the membrane created. A set of model compounds were analysed to determine their permeation through PDMS, both with and without plasma treatment. It was found that plasma treatment reduced permeation for the majority of compounds but had little effect on some compounds, such as caffeine, with results indicating that polarity plays an important role in permeation, as is seen in human skin. Most importantly, a direct correlation was observed between plasma-modified permeation data and literature data through calculation of membrane permeability (Kp) values suggesting plasma-modified silicone membrane (PMSM) could be considered as a suitable in vivo replacement to predict clinical skin permeation.
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Ambrogi V, Pietrella D, Nocchetti M, Casagrande S, Moretti V, De Marco S, Ricci M. Montmorillonite–chitosan–chlorhexidine composite films with antibiofilm activity and improved cytotoxicity for wound dressing. J Colloid Interface Sci 2017; 491:265-272. [DOI: 10.1016/j.jcis.2016.12.058] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 02/05/2023]
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Guerra AD, Rose WE, Hematti P, Kao WJ. Minocycline enhances the mesenchymal stromal/stem cell pro-healing phenotype in triple antimicrobial-loaded hydrogels. Acta Biomater 2017; 51:184-196. [PMID: 28069512 PMCID: PMC5704963 DOI: 10.1016/j.actbio.2017.01.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 01/04/2017] [Accepted: 01/05/2017] [Indexed: 01/12/2023]
Abstract
Mesenchymal stromal/stem cells (MSCs) have demonstrated pro-healing properties including an anti-inflammatory cytokine profile and the promotion of angiogenesis via expression of growth factors in pre-clinical models. MSCs encapsulated in poly(ethylene glycol) diacrylate (PEGdA) and thiolated gelatin poly(ethylene glycol) (Gel-PEG-Cys) crosslinked hydrogels have led to controlled cellular presentation at wound sites with favorable wound healing outcomes. However, the therapeutic potential of MSC-loaded hydrogels may be limited by non-specific protein adsorption on the delivery matrix that could facilitate the initial adhesion of microorganisms and subsequent virulent biofilm formation. Antimicrobials loaded concurrently in the hydrogels with MSCs could reduce microbial bioburden and promote healing, but the antimicrobial effect on the MSC wound healing capacity and the antibacterial efficacy of the hydrogels is unknown. We demonstrate that minocycline specifically induces a favorable change in MSC migration capacity, proliferation, gene expression, extracellular matrix (ECM) attachment, and adhesion molecule and growth factor release with subsequent increased angiogenesis. We then demonstrate that hydrogels loaded with MSCs, minocycline, vancomycin, and linezolid can significantly decrease bacterial bioburden. Our study suggests that minocycline can serve as a dual mechanism for the regenerative capacity of MSCs and the reduction of bioburden in triple antimicrobial-loaded hydrogels. STATEMENT OF SIGNIFICANCE Wound healing is a complex biological process that can be hindered by bacterial infection, excessive inflammation, and inadequate microvasculature. In this study, we develop a new formulation of poly(ethylene glycol) diacrylate and thiolated gelatin poly(ethylene glycol) crosslinked hydrogels loaded with minocycline, vancomycin, linezolid, and mesenchymal stromal/stem cells that induces a favorable wound healing phenotype in mesenchymal stromal/stem cells and prevents bacterial bioburden on the hydrogel. This combinatorial approach to biomaterial development has the potential to impact wound healing for contaminated full thickness cutaneous wounds.
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Affiliation(s)
- Alberto Daniel Guerra
- School of Pharmacy, Division of Pharmaceutical Sciences, Pharmacy Practice Division, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA.
| | - Warren E Rose
- School of Pharmacy, Division of Pharmaceutical Sciences, Pharmacy Practice Division, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA.
| | - Peiman Hematti
- School of Medicine and Public Health, Department of Medicine, Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, 1685 Highland Avenue, Madison, WI 53705, USA.
| | - W John Kao
- School of Pharmacy, Division of Pharmaceutical Sciences, Pharmacy Practice Division, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705, USA; College of Engineering, Department of Biomedical Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA; School of Medicine and Public Health, Department of Surgery, University of Wisconsin-Madison, 1685 Highland Avenue, Madison, WI 53705, USA.
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Chen MM, Cao H, Liu YY, Liu Y, Song FF, Chen JD, Zhang QQ, Yang WZ. Sequential delivery of chlorhexidine acetate and bFGF from PLGA-glycol chitosan core-shell microspheres. Colloids Surf B Biointerfaces 2017; 151:189-195. [DOI: 10.1016/j.colsurfb.2016.05.045] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/12/2016] [Accepted: 05/16/2016] [Indexed: 10/21/2022]
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Herron M, Schurr MJ, Murphy CJ, McAnulty JF, Czuprynski CJ, Abbott NL. Interfacial Stacks of Polymeric Nanofilms on Soft Biological Surfaces that Release Multiple Agents. ACS APPLIED MATERIALS & INTERFACES 2016; 8:26541-26551. [PMID: 27579573 DOI: 10.1021/acsami.6b08608] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report a general and facile method that permits the transfer (stacking) of multiple independently fabricated and nanoscopically thin polymeric films, each containing a distinct bioactive agent, onto soft biomedically relevant surfaces (e.g., collagen-based wound dressings). By using polyelectrolyte multilayer films (PEMs) formed from poly(allyl amine hydrochloride) and poly(acrylic acid) as representative polymeric nanofilms and micrometer-thick water-soluble poly(vinyl alcohol) sacrificial films to stack the PEMs, we demonstrate that it is possible to create stacked polymeric constructs containing multiple bioactive agents (e.g., antimicrobial and antibiofilm agents) on soft and chemically complex surfaces onto which PEMs cannot be routinely transferred by stamping. We illustrate the characteristics and merits of the approach by fabricating stacks of Ga3+ (antibiofilm agent)- and Ag+ (antimicrobial agent)-loaded PEMs as prototypical examples of agent-containing PEMs and demonstrate that the stacked PEMs incorporate precise loadings of the agents and provide flexibility in terms of tuning release rates. Specifically, we show that simultaneous release of Ga3+ and Ag+ from the stacked PEMs on collagen-based wound dressings can lead to synergistic effects on bacteria, killing and dispersing biofilms formed by Pseudomonas aeruginosa (two strains: ATCC 27853 and MPAO1) at sufficiently low loadings of agents such that cytotoxic effects on mammalian cells are avoided. The approach is general (a wide range of bioactive agents other than Ga3+ and Ag+ can be incorporated into PEMs), and the modular nature of the approach potentially allows end-user functionalization of soft biological surfaces for programmed release of multiple bioactive agents.
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Affiliation(s)
- Maggie Herron
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Michael J Schurr
- Division of General Surgery, Mountain Area Health Education Center , 509 Biltmore Avenue, Asheville, North Carolina 28801, United States
| | - Christopher J Murphy
- Department of Ophthalmology and Vision Sciences, School of Medicine and Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis , 1423 Tupper Hall, Davis, California 95616, United States
| | - Jonathan F McAnulty
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison , 2015 Linden Drive, Madison, Wisconsin 53706, United States
| | - Charles J Czuprynski
- Department of Pathobiology, School of Veterinary Medicine, University of Wisconsin-Madison , 2015 Linden Drive, Madison, Wisconsin 53706, United States
| | - Nicholas L Abbott
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
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Cassin ME, Ford AJ, Orbach SM, Saverot SE, Rajagopalan P. The design of antimicrobial LL37-modified collagen-hyaluronic acid detachable multilayers. Acta Biomater 2016; 40:119-129. [PMID: 27109763 DOI: 10.1016/j.actbio.2016.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 04/08/2016] [Accepted: 04/18/2016] [Indexed: 12/31/2022]
Abstract
UNLABELLED The design of antimicrobial membranes and thin films are critical for the design of biomaterials that can combat bacterial contamination. Since the long-term use of conventional antibiotics can result in bacterial resistance, there is a critical need to incorporate natural antimicrobial peptides (AMPs) that not only prevent a wide range of pathogens from causing infections but can also promote many beneficial outcomes in wounded tissues. We report the design and antimicrobial properties of detachable collagen (COL)/hyaluronic acid (HA) polyelectrolyte multilayers (PEMs) modified with LL-37, a naturally occurring human AMP. LL-37 was physically adsorbed and chemically immobilized on the surface of PEMs. The antimicrobial and cytotoxic properties of PEMs were tested with Gram-negative Escherichia coli (E. coli, strain DH10B) and primary rat hepatocytes, respectively. The ability to prevent bacterial adhesion and to neutralize an E. coli layer was investigated as a function of LL-37 concentration. An interesting trend was that even unmodified PEMs exhibited a 40% reduction in bacterial adhesion. When LL-37 was physically adsorbed on PEMs, bacterial adhesion was significantly lower on the surface of the films as well as in the surrounding broth. Immobilizing LL-37 resulted in less than 3% bacterial adhesion on the surface due to the presence of the peptide. LL-37 modified PEMs did not result in any cytotoxicity up to input concentrations of 16μM. More importantly, urea and albumin secretion by hepatocytes were unaffected even at high LL-37 concentrations. The COL/HA PEMs can serve as antimicrobial coatings, biological membranes and as in vitro platforms to investigate pathogen-tissue interactions. STATEMENT OF SIGNIFICANCE Antimicrobial peptides (AMPs) are emerging as an alternative to conventional antibiotics. We report the antimicrobial properties of detachable collagen (COL)/hyaluronic acid (HA) polyelectrolyte multilayers (PEMs) modified with LL-37, a human AMP. The antimicrobial and cytotoxic properties were tested with gram-negative Escherichia coli (E. coli, strain DH10B) and primary rat hepatocytes, respectively. Unmodified PEMs exhibited a 40% reduction in bacterial adhesion. When LL-37 was physically adsorbed on PEMs, the sustained release of the active peptide killed planktonic bacteria. Immobilizing LL-37 resulted in less than 3% bacterial adhesion. LL-37 modified PEMs did not result in cytotoxicity up to input concentrations of 16μM. The COL/HA PEMs can serve as antimicrobial coatings and to investigate pathogen-cell interactions.
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Barbour ME, Maddocks SE, Grady HJ, Roper JA, Bass MD, Collins AM, Dommett RM, Saunders M. Chlorhexidine hexametaphosphate as a wound care material coating: antimicrobial efficacy, toxicity and effect on healing. Nanomedicine (Lond) 2016; 11:2049-57. [DOI: 10.2217/nnm-2016-0084] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Aim: In this study, chlorhexidine hexametaphosphate (CHX-HMP) is investigated as a persistent antimicrobial coating for wound care materials. Materials & methods: CHX-HMP was used as a wound care material coating and compared with chlorhexidine digluconate materials with respect to antimicrobial efficacy, toxicity and wound closure. Results: Antimicrobial efficacy at day 1, 3 and 7 was observed with experimental and commercial materials. CHX-HMP coated materials had less toxic effect on human placental cells than commercial chlorhexidine dressings. CHX-HMP in pluronic gel did not delay healing but reduced wound colonization by E. faecalis. Conclusion: CHX-HMP could become a useful component of wound care materials with sustained antimicrobial efficacy, lower toxicity than chlorhexidine digluconate materials, and reduction in wound colonization without affecting closure.
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Affiliation(s)
- Michele E Barbour
- Oral Nanoscience, School of Oral & Dental Sciences, University of Bristol, UK
| | | | - Helena J Grady
- Oral Nanoscience, School of Oral & Dental Sciences, University of Bristol, UK
- Bristol Centre for Functional Nanomaterials, University of Bristol, UK
| | | | - Mark D Bass
- Centre for Membrane Interactions & Dynamics, Department of Biomedical Science, University of Sheffield, UK
| | - Andrew M Collins
- Bristol Centre for Functional Nanomaterials, University of Bristol, UK
| | | | - Margaret Saunders
- Bioengineering, Innovation & Research Hub (BIRCH), University Hospitals Bristol, UK
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Zhang X, Ma J, Tang CY, Wang Z, Ng HY, Wu Z. Antibiofouling Polyvinylidene Fluoride Membrane Modified by Quaternary Ammonium Compound: Direct Contact-Killing versus Induced Indirect Contact-Killing. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:5086-93. [PMID: 27104660 DOI: 10.1021/acs.est.6b00902] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Widespread applications of membrane technology call for the development of antibiofouling membranes. For the traditional contact-killing strategy, the antibacterial action is restricted to the surface: the membrane loses its antibiofouling efficacy once its surface is completely covered with a fouling layer. However, in this study, polyvinylidene fluoride (PVDF) microfiltration membranes blended with quaternary ammonium compound (QAC) exhibited a surprisingly lasting antimicrobial activity in the vicinity of the membrane surface. The results indicated that QAC was capable of driving surface segregation with a high structural stability, and the QAC modified membrane shows clear antibacterial effects against both Gram-positive and Gram-negative bacteria. Covering the modified membrane surface by an abiotic alginate layer resulted in a loss of antibacterial efficiency by 86.2%. In contrast, the antibacterial efficiency was maintained after developing a biofilm of Staphylococcus aureus of 30 μm in thickness. The current study may suggest that bacteria affected by contact-killing might interact with other bacteria in the vicinity, resulting in retarded biofilm growth. The antibiofouling effect and associated mechanism of the QAC modified membrane were further validated in a membrane bioreactor during long-term operation.
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Affiliation(s)
- Xingran Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University , 1239 Siping Road, Shanghai 200092, China
| | - Jinxing Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University , 1239 Siping Road, Shanghai 200092, China
| | - Chuyang Y Tang
- Department of Civil Engineering, The University of Hong Kong , Pokfulam, Hong Kong, China
| | - Zhiwei Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University , 1239 Siping Road, Shanghai 200092, China
| | - How Yong Ng
- Centre for Water Research, Department of Civil and Environmental Engineering, National University of Singapore , 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Zhichao Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University , 1239 Siping Road, Shanghai 200092, China
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Park SA, Covert J, Teixeira L, Motta MJ, DeRemer SL, Abbott NL, Dubielzig R, Schurr M, Isseroff RR, McAnulty JF, Murphy CJ. Importance of defining experimental conditions in a mouse excisional wound model. Wound Repair Regen 2016; 23:251-61. [PMID: 25703258 DOI: 10.1111/wrr.12272] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 02/06/2015] [Accepted: 02/10/2015] [Indexed: 11/29/2022]
Abstract
The murine dorsum dermal excisional wound model has been widely utilized with or without splint application. However, variations in experimental methods create challenges for direct comparison of results provided in the literature and for design of new wound healing studies. Here, we investigated the effects of wound location and size, number of wounds, type of adhesive used for splint fixation on wound healing using splinted or unsplinted dorsum excisional full thickness wound models. One or two 6- or 8-mm full thickness wounds were made with or without splinting in genetically diabetic but heterozygous mice (Dock7(m) + / + Lepr(db) ). Two different adhesives: tissue adhesive and an over the counter cyanoacrylate adhesive (OTCA) "Krazy glue" were used to fix splints. Wound contraction, wound closure, and histopathological parameters including reepithelialization, collagen deposition and inflammation were compared between groups. No significant effect of wound number (1 vs. 2), side (left vs. right and cranial vs. caudal) or size on wound healing was observed. The OTCA group had a significantly higher splint success compared to the tissue adhesive group that resulted in significantly higher reepithelialization and collagen deposition in the OTCA group. Understanding the outcomes and effects of the variables will help investigators choose appropriate experimental conditions for the study purpose and interpret data.
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Affiliation(s)
- Shin Ae Park
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Jill Covert
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Leandro Teixeira
- Department of Pathobiological Sciences School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin
| | - Monica J Motta
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Sara L DeRemer
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Nicholas L Abbott
- Department of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin
| | - Richard Dubielzig
- Department of Pathobiological Sciences School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin
| | - Michael Schurr
- Trauma Surgery, Mission Medical Associates, Mission Hospital, Asheville, North Carolina
| | - Roslyn Rivkah Isseroff
- Department of Dermatology, School of Medicine, University of California, Davis, California.,Dermatology Service, VA Northern California Health Care System, Mather, California
| | - Jonathan F McAnulty
- Department of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin.,Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin
| | - Christopher J Murphy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California.,Department of Ophthalmology & Vision Science, School of Medicine, University of California, Davis, California
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Susarrey-Arce A, Sorzabal-Bellido I, Oknianska A, McBride F, Beckett AJ, Gardeniers JGE, Raval R, Tiggelaar RM, Diaz Fernandez YA. Bacterial viability on chemically modified silicon nanowire arrays. J Mater Chem B 2016; 4:3104-3112. [PMID: 32263048 DOI: 10.1039/c6tb00460a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The global threat of antimicrobial resistance is driving an urgent need for novel antimicrobial strategies. Functional surfaces are essential to prevent spreading of infection and reduce surface contamination. In this study we have fabricated and characterized multiscale-functional nanotopographies with three levels of functionalization: (1) nanostructure topography in the form of silicon nanowires, (2) covalent chemical modification with (3-aminopropyl)triethoxysilane, and (3) incorporation of chlorhexidine digluconate. Cell viability assays were carried out on two model microorganisms E. coli and S. aureus over these nanotopographic surfaces. Using SEM we have identified two growth modes producing distinctive multicellular structures, i.e. in plane growth for E. coli and out of plane growth for S. aureus. We have also shown that these chemically modified SiNWs arrays are effective in reducing the number of planktonic and surface-attached microorganisms.
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Affiliation(s)
- A Susarrey-Arce
- Open Innovation Hub for Antimicrobial Surfaces at the Surface Science Research Centre, University of Liverpool, Oxford Street, L69 3BX, Liverpool, UK.
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Hyaluronate nanoparticles included in polymer films for the prolonged release of vitamin E for the management of skin wounds. Eur J Pharm Sci 2016; 83:203-11. [DOI: 10.1016/j.ejps.2016.01.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Revised: 11/23/2015] [Accepted: 01/03/2016] [Indexed: 01/28/2023]
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Donnadio A, Ambrogi V, Pietrella D, Pica M, Sorrentino G, Casciola M. Carboxymethylcellulose films containing chlorhexidine–zirconium phosphate nanoparticles: antibiofilm activity and cytotoxicity. RSC Adv 2016. [DOI: 10.1039/c6ra04151e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hybrid composite films of carboxymethylcellulose and chlorhexidine intercalated nanosized zirconium phosphate result able to reduce the formation of biofilms on wound surface.
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Affiliation(s)
- Anna Donnadio
- Dipartimento di Scienze Farmaceutiche
- University of Perugia
- Perugia
- Italy
| | - Valeria Ambrogi
- Dipartimento di Scienze Farmaceutiche
- University of Perugia
- Perugia
- Italy
| | - Donatella Pietrella
- Dipartimento di Scienze Farmaceutiche
- Microbiology and Immunology Laboratory
- University of Perugia
- 06122 Perugia
- Italy
| | - Monica Pica
- Dipartimento di Scienze Farmaceutiche
- University of Perugia
- Perugia
- Italy
| | - Giulia Sorrentino
- Dipartimento di Scienze Farmaceutiche
- University of Perugia
- Perugia
- Italy
| | - Mario Casciola
- Dipartimento di Chimica, Biologia, Biotecnologia
- CEMIN, University of Perugia
- 06123 Perugia
- Italy
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Séon L, Lavalle P, Schaaf P, Boulmedais F. Polyelectrolyte Multilayers: A Versatile Tool for Preparing Antimicrobial Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12856-72. [PMID: 26513437 DOI: 10.1021/acs.langmuir.5b02768] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The prevention of pathogen colonization of medical implants represents a major medical and financial issue. The development of antimicrobial coatings aimed at protecting against such infections has thus become a major field of scientific and technological research. Three main strategies are developed to design such coatings: (i) the prevention of microorganisms adhesion and the killing of microorganisms (ii) by contact and (iii) by the release of active compounds in the vicinity of the implant. Polyelectrolyte multilayer (PEM) technology alone covers the entire widespread spectrum of functionalization possibilities. PEMs are obtained through the alternating deposition of polyanions and polycations on a substrate, and the great advantages of PEMs are that (i) they can be applied to almost any type of substrate whatever its shape and composition; (ii) various chemical, physicochemical, and mechanical properties of the coatings can be obtained; and (iii) active compounds can be embedded and released in a controlled manner. In this article we will give an overview of the field of PEMs applied to the design of antimicrobial coatings, illustrating the large versatility of the PEM technology.
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Affiliation(s)
- Lydie Séon
- Centre National de la Recherche Scientifique, Institut Charles Sadron, UPR 22 , 23 rue du Loess, 67034 Strasbourg, France
- Institut National de la Santé et de la Recherche Médicale, Biomaterials and Bioengineering, UMR 1121 , 11 rue Humann, 67085 Strasbourg, France
- Université de Strasbourg , Faculté de Chirurgie Dentaire, 2 rue Sainte-Elisabeth, 67000 Strasbourg, France
| | - Philippe Lavalle
- Institut National de la Santé et de la Recherche Médicale, Biomaterials and Bioengineering, UMR 1121 , 11 rue Humann, 67085 Strasbourg, France
- Université de Strasbourg , Faculté de Chirurgie Dentaire, 2 rue Sainte-Elisabeth, 67000 Strasbourg, France
| | - Pierre Schaaf
- Centre National de la Recherche Scientifique, Institut Charles Sadron, UPR 22 , 23 rue du Loess, 67034 Strasbourg, France
- Institut National de la Santé et de la Recherche Médicale, Biomaterials and Bioengineering, UMR 1121 , 11 rue Humann, 67085 Strasbourg, France
- Université de Strasbourg , Faculté de Chirurgie Dentaire, 2 rue Sainte-Elisabeth, 67000 Strasbourg, France
- Université de Strasbourg , Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087 Strasbourg, France
- International Center for Frontier Research in Chemistry, 8 allée Gaspard Monge, 67083 Strasbourg, France
- Institut Universitaire de France , 103 boulevard Saint-Michel, 75005 Paris, France
| | - Fouzia Boulmedais
- Centre National de la Recherche Scientifique, Institut Charles Sadron, UPR 22 , 23 rue du Loess, 67034 Strasbourg, France
- International Center for Frontier Research in Chemistry, 8 allée Gaspard Monge, 67083 Strasbourg, France
- University of Strasbourg Institute of Advanced Study , 5 allée du Général Rouvillois, 67083 Strasbourg, France
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Pérez-Köhler B, García-Moreno F, Brune T, Pascual G, Bellón JM. Preclinical Bioassay of a Polypropylene Mesh for Hernia Repair Pretreated with Antibacterial Solutions of Chlorhexidine and Allicin: An In Vivo Study. PLoS One 2015; 10:e0142768. [PMID: 26556805 PMCID: PMC4640885 DOI: 10.1371/journal.pone.0142768] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 10/27/2015] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION Prosthetic mesh infection constitutes one of the major complications following hernia repair. Antimicrobial, non-antibiotic biomaterials have the potential to reduce bacterial adhesion to the mesh surface and adjacent tissues while avoiding the development of novel antibiotic resistance. This study assesses the efficacy of presoaking reticular polypropylene meshes in chlorhexidine or a chlorhexidine and allicin combination (a natural antibacterial agent) for preventing bacterial infection in a short-time hernia-repair rabbit model. METHODS Partial hernia defects (5 x 2 cm) were created on the lateral right side of the abdominal wall of New Zealand White rabbits (n = 21). The defects were inoculated with 0.5 mL of a 106 CFU/mL Staphylococcus aureus ATCC25923 strain and repaired with a DualMesh Plus antimicrobial mesh or a Surgipro mesh presoaked in either chlorhexidine (0.05%) or allicin-chlorhexidine (900 μg/mL-0.05%). Fourteen days post-implant, mesh contraction was measured and tissue specimens were harvested to evaluate bacterial adhesion to the implant surface (via sonication, S. aureus immunolabeling), host-tissue incorporation (via staining, scanning electron microscopy) and macrophage response (via RAM-11 immunolabeling). RESULTS The polypropylene mesh showed improved tissue integration relative to the DualMesh Plus. Both the DualMesh Plus and the chlorhexidine-soaked polypropylene meshes exhibited high bacterial clearance, with the latter material showing lower bacterial yields. The implants from the allicin-chlorhexidine group displayed a neoformed tissue containing differently sized abscesses and living bacteria, as well as a diminished macrophage response. The allicin-chlorhexidine coated implants exhibited the highest contraction. CONCLUSIONS The presoaking of reticular polypropylene materials with a low concentration of chlorhexidine provides the mesh with antibacterial activity without disrupting tissue integration. Due to the similarities found with the antimicrobial DualMesh Plus material, the chlorhexidine concentration tested could be utilized as a prophylactic treatment to resist infection by prosthetic mesh during hernia repair.
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Affiliation(s)
- Bárbara Pérez-Köhler
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, University of Alcalá. Madrid, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Francisca García-Moreno
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, University of Alcalá. Madrid, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | | | - Gemma Pascual
- Department of Medicine and Medical Specialties, Faculty of Medicine and Health Sciences, University of Alcalá. Madrid, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Juan Manuel Bellón
- Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, University of Alcalá. Madrid, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
- * E-mail:
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50
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Brandenburg KS, Calderon DF, Kierski PR, Brown AL, Shah NM, Abbott NL, Schurr MJ, Murphy CJ, McAnulty JF, Czuprynski CJ. Inhibition of Pseudomonas aeruginosa biofilm formation on wound dressings. Wound Repair Regen 2015; 23:842-54. [PMID: 26342168 DOI: 10.1111/wrr.12365] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 07/31/2015] [Accepted: 09/02/2015] [Indexed: 01/19/2023]
Abstract
Chronic nonhealing skin wounds often contain bacterial biofilms that prevent normal wound healing and closure and present challenges to the use of conventional wound dressings. We investigated inhibition of Pseudomonas aeruginosa biofilm formation, a common pathogen of chronic skin wounds, on a commercially available biological wound dressing. Building on prior reports, we examined whether the amino acid tryptophan would inhibit P. aeruginosa biofilm formation on the three-dimensional surface of the biological dressing. Bacterial biomass and biofilm polysaccharides were quantified using crystal violet staining or an enzyme linked lectin, respectively. Bacterial cells and biofilm matrix adherent to the wound dressing were visualized through scanning electron microscopy. D-/L-tryptophan inhibited P. aeruginosa biofilm formation on the wound dressing in a dose dependent manner and was not directly cytotoxic to immortalized human keratinocytes although there was some reduction in cellular metabolism or enzymatic activity. More importantly, D-/L-tryptophan did not impair wound healing in a splinted skin wound murine model. Furthermore, wound closure was improved when D-/L-tryptophan treated wound dressing with P. aeruginosa biofilms were compared with untreated dressings. These findings indicate that tryptophan may prove useful for integration into wound dressings to inhibit biofilm formation and promote wound healing.
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Affiliation(s)
- Kenneth S Brandenburg
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, Wisconsin
| | - Diego F Calderon
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Patricia R Kierski
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Amanda L Brown
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Nihar M Shah
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, California
| | - Nicholas L Abbott
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Michael J Schurr
- Mission Trauma Services, Mission Medical Associates, Mission Memorial Hospital, Asheville, North Carolina
| | - Christopher J Murphy
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, California.,Department of Ophthalmology & Vision Science, School of Medicine, University of California-Davis, Davis, California
| | - Jonathan F McAnulty
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Charles J Czuprynski
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, Wisconsin
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