1
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Li C, Gao D, Li C, Cheng G, Zhang L. Fighting against biofilm: The antifouling and antimicrobial material. Biointerphases 2024; 19:040802. [PMID: 39023091 DOI: 10.1116/6.0003695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/07/2024] [Indexed: 07/20/2024] Open
Abstract
Biofilms are groups of microorganisms protected by self-secreted extracellular substances. Biofilm formation on the surface of biomaterial or engineering materials becomes a severe challenge. It has caused significant health, environmental, and societal concerns. It is believed that biofilms lead to life-threatening infection, medical implant failure, foodborne disease, and marine biofouling. To address these issues, tremendous effort has been made to inhibit biofilm formation on materials. Biofilms are extremely difficult to treat once formed, so designing material and coating bearing functional groups that are capable of resisting biofilm formation has attracted increasing attention for the last two decades. Many types of antibiofilm strategies have been designed to target different stages of biofilm formation. Development of the antibiofilm material can be classified into antifouling material, antimicrobial material, fouling release material, and integrated antifouling/antimicrobial material. This review summarizes relevant research utilizing these four approaches and comments on their antibiofilm properties. The feature of each method was compared to reveal the research trend. Antibiofilm strategies in fundamental research and industrial applications were summarized.
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Affiliation(s)
- Chao Li
- School of Engineering, Westlake University, Hangzhou, Zhejiang 310030, China
- Department of Pharmaceutical Sciences, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Dongdong Gao
- School of Engineering, Westlake University, Hangzhou, Zhejiang 310030, China
- Department of Pharmaceutical Sciences, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Chunmei Li
- Tsinglan School, Songshan Lake, Dongguan 523000, China
| | - Gang Cheng
- School of Engineering, Westlake University, Hangzhou, Zhejiang 310030, China
| | - Lijun Zhang
- Liaoning Provincial Key Laboratory of Cornea and Ocular Surface Diseases, Liaoning Provincial Optometry Technology Engineering Research Center, The Third People's Hospital of Dalian, Dalian, Liaoning 116033, China
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2
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Chadha J, Thakur N, Chhibber S, Harjai K. A comprehensive status update on modification of foley catheter to combat catheter-associated urinary tract infections and microbial biofilms. Crit Rev Microbiol 2024; 50:168-195. [PMID: 36651058 DOI: 10.1080/1040841x.2023.2167593] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 11/01/2022] [Accepted: 01/09/2023] [Indexed: 01/19/2023]
Abstract
Present-day healthcare employs several types of invasive devices, including urinary catheters, to improve medical wellness, the clinical outcome of disease, and the quality of patient life. Among urinary catheters, the Foley catheter is most commonly used in patients for bladder drainage and collection of urine. Although such devices are very useful for patients who cannot empty their bladder for various reasons, they also expose patients to catheter-associated urinary tract infections (CAUTIs). Catheter provides an ideal surface for bacterial colonization and biofilm formation, resulting in persistent bacterial infection and severe complications. Hence, rigorous efforts have been made to develop catheters that harbour antimicrobial and anti-fouling properties to resist colonization by bacterial pathogens. In this regard, catheter modification by surface functionalization, impregnation, blending, or coating with antibiotics, bioactive compounds, and nanoformulations have proved to be effective in controlling biofilm formation. This review attempts to illustrate the complications associated with indwelling Foley catheters, primarily focussing on challenges in fighting CAUTI, catheter colonization, and biofilm formation. In this review, we also collate scientific literature on catheter modification using antibiotics, plant bioactive components, bacteriophages, nanoparticles, and studies demonstrating their efficacy through in vitro and in vivo testing.
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Affiliation(s)
- Jatin Chadha
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Navdisha Thakur
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Sanjay Chhibber
- Department of Microbiology, Panjab University, Chandigarh, India
| | - Kusum Harjai
- Department of Microbiology, Panjab University, Chandigarh, India
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3
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Rajaramon S, Shanmugam K, Dandela R, Solomon AP. Emerging evidence-based innovative approaches to control catheter-associated urinary tract infection: a review. Front Cell Infect Microbiol 2023; 13:1134433. [PMID: 37560318 PMCID: PMC10407108 DOI: 10.3389/fcimb.2023.1134433] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 07/04/2023] [Indexed: 08/11/2023] Open
Abstract
Healthcare settings have dramatically advanced the latest medical devices, such as urinary catheters (UC) for infection, prevention, and control (IPC). The continuous or intermittent flow of a warm and conducive (urine) medium in the medical device, the urinary catheter, promotes the formation of biofilms and encrustations, thereby leading to the incidence of CAUTI. Additionally, the absence of an innate immune host response in and around the lumen of the catheter reduces microbial phagocytosis and drug action. Hence, the review comprehensively overviews the challenges posed by CAUTI and associated risks in patients' morbidity and mortality. Also, detailed, up-to-date information on the various strategies that blended/tailored the surface properties of UC to have anti-fouling, biocidal, and anti-adhesive properties to provide an outlook on how they can be better managed with futuristic solutions.
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Affiliation(s)
- Shobana Rajaramon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Karthi Shanmugam
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Bhubaneswar, Odisha, India
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
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4
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Covelli V, Cozzolino A, Rizzo P, Rodriquez M, Vestuto V, Bertamino A, Daniel C, Guerra G. Salicylic Acid Release from Syndiotactic Polystyrene Staple Fibers. Molecules 2023; 28:5095. [PMID: 37446756 DOI: 10.3390/molecules28135095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Films and fibers of syndiotactic polystyrene (sPS), being amorphous or exhibiting nanoporous crystalline (NC) or dense crystalline phases, were loaded with salicylic acid (SA), a relevant non-volatile antimicrobial molecule. In the first section of the paper, sPS/SA co-crystalline (CC) δ form is characterized, mainly by wide angle X-ray diffraction (WAXD) patterns and polarized Fourier transform infrared (FTIR) spectra. The formation of sPS/SA δ CC phases allows the preparation of sPS fibers even with a high content of the antibacterial guest, which is also retained after repeated washing procedures at 65 °C. A preparation procedure starting from amorphous fibers is particularly appropriate because involves a direct formation of the CC δ form and a simultaneous axial orientation. The possibility of tuning drug amount and release kinetics, by simply selecting suitable crystalline phases of a commercially available polymer, makes sPS fibers possibly useful for many applications. In particular, fibers with δ CC forms, which retain SA molecules in their crystalline phases, could be useful for antimicrobial textiles and fabrics. Fibers with the dense γ form which easily release SA molecules, because they are only included in their amorphous phases, could be used for promising SA-based preparations for antibacterial purposes in food processing and preservation and public health. Finally, using a cell-based assay system and antibacterial tests, we investigated the cellular activity, toxicity and antimicrobial properties of amorphous, δ CC forms and dense γ form of sPS fibers loaded with different contents of SA.
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Affiliation(s)
- Verdiana Covelli
- Department of Chemistry and Biology "A. Zambelli" and INSTM Research Unit, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Antonietta Cozzolino
- Department of Chemistry and Biology "A. Zambelli" and INSTM Research Unit, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Paola Rizzo
- Department of Chemistry and Biology "A. Zambelli" and INSTM Research Unit, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Manuela Rodriquez
- Department of Pharmacy, University of Napoli, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Vincenzo Vestuto
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Alessia Bertamino
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Christophe Daniel
- Department of Chemistry and Biology "A. Zambelli" and INSTM Research Unit, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Gaetano Guerra
- Department of Chemistry and Biology "A. Zambelli" and INSTM Research Unit, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
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5
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Surface Design Strategies of Polymeric Biomedical Implants for Antibacterial Properties. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2023. [DOI: 10.1016/j.cobme.2023.100448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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6
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Wang Y, Ren X, Ji C, Zhong D, Wei X, Zhu Z, Zhou X, Zhang X, Wang S, Qin C, Song N. A modified biodegradable mesh ureteral stent for treating ureteral stricture disease. Acta Biomater 2023; 155:347-358. [PMID: 36402295 DOI: 10.1016/j.actbio.2022.11.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 10/21/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022]
Abstract
Ureteral stricture disease (USD) is a common urologic condition. Patients with ureteral stricture disease may suffer from ipsilateral flank pain, nausea, urinary calculi, infection, and impaired renal function. The treatments of USD include surgery, followed by implantation of the ureteral stent to aid the drainage of the urine. The traditional ureteral stent may sometimes cause urological infection, encrustation, and discomfort. To decrease the complication of the ureteral stent, we modified the structure and material based on the traditional ureteral stent. The traditional nondegradable Double-J shape tubular ureteral stent was turned into the biodegradable mesh ureteral stent. The modified mesh ureteral stent and Double-J ureteral stent were inserted into the ureters of the USD animals, respectively. The results of the gross morphology, serology, urinalysis, histology, microstructure, et al. demonstrated that modified mesh ureteral stent has a favorable ability in supporting the ureter and has no effect on cell proliferation, migration, apoptosis, and cell cycle of the human uroepithelial cells. The mesh ureteral stent could relieve ureter obstruction and can be slowly biodegraded after 3-5 months of implantation without the need for a second surgery to remove the stent. Compared to the Double-J ureteral stent, the modified mesh ureteral stent has a lower rate of urinary tract infection and less encrustation. It is expected to be an alternative treatment approach for USD. However, due to the limited number of animals and clinical data, further study focused on the application value in clinical practice are essential. STATEMENT OF SIGNIFICANCE: This study demonstrates: 1. A modified biodegradable mesh ureteral stent; 2. Without the need for a second surgery to remove the stent; 3. A lower rate of urinary tract infection and less encrustation than a double-J ureteral stent; 4. An alternative treatment approach for USD.
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Affiliation(s)
- Yichun Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Xiaohan Ren
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Chengjian Ji
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Da Zhong
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Xiyi Wei
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Zheng Zhu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Xuan Zhou
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Xi Zhang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Shuai Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China
| | - Chao Qin
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China.
| | - Ninghong Song
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, Jiangsu 210029, China; The Affiliated Kezhou People's Hospital of Nanjing Medical University, China.
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7
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Bibliometrics of Functional Polymeric Biomaterials with Bioactive Properties Prepared by Radiation-Induced Graft Copolymerisation: A Review. Polymers (Basel) 2022; 14:polym14224831. [PMID: 36432958 PMCID: PMC9692568 DOI: 10.3390/polym14224831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
Functional polymeric biomaterials (FPBMs) with bioactive characteristics obtained by radiation-induced graft copolymerisation (RIGC) have been subjected to intensive research and developed into many commercial products. Various studies have reported the development of a variety of radiation-grafted FPBMs. However, no reports dealing with the quantitative evaluations of these studies from a global bibliographic perspective have been published. Such bibliographic analysis can provide information to overcome the limitations of the databases and identify the main research trends, together with challenges and future directions. This review aims to provide an unprecedented bibliometric analysis of the published literature on the use of RIGC for the preparation of FPBMs and their applications in medical, biomedical, biotechnological, and health care fields. A total of 235 publications obtained from the Web of Science (WoS) in the period of 1985-2021 were retrieved, screened, and evaluated. The records were used to manifest the contributions to each field and underline not only the top authors, journals, citations, years of publication, and countries but also to highlight the core research topics and the hubs for research excellence on these materials. The obtained data overviews are likely to provide guides to early-career scientists and their research institutions and promote the development of new, timely needed radiation-grafted FPBMs, in addition to extending their applications.
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8
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Çankaya N, Korcan SE, Turan N, Aydin B, Tanış E. First Report of the Synthesis, Characterization, DFT Calculations of the New Oxoethyl Methacrylate and o-Acetamide and Evaluation of Antimicrobial, Antibiofilm and Antioxidant Effect. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2097271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Nevin Çankaya
- Department of Chemistry, Faculty of Science, Uşak University, Usak, Turkey
| | | | - Nevin Turan
- Department of Chemistry, Faculty of Arts and Sciences, Muş Alparslan University, Muş, Turkey
| | - Büşra Aydin
- Department of Molecular Biology and Genetic, Faculty of Arts and Sciences, Uşak University, Usak, Turkey
| | - Emine Tanış
- Department of Electrical Electronics Engineering, Kırşehir Ahi Evran University, Kırsehir, Turkey
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9
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Chakrabarty S, Mishra MP, Bhattacharyay D. Targeting Microbial Bio-film: an Update on MDR Gram-Negative Bio-film Producers Causing Catheter-Associated Urinary Tract Infections. Appl Biochem Biotechnol 2022; 194:2796-2830. [PMID: 35247153 DOI: 10.1007/s12010-021-03711-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 10/08/2021] [Indexed: 11/26/2022]
Abstract
In every age group, urinary tract infection (UTI) is found as a major recurrence infectious disorder. Bio-films produced by bacteria perform a vital role in causing infection in the tract of the urinary system, leading to recurrences and relapses. The purpose of this review is to present the role and mechanism of bio-film producing MDR Gram-negative bacteria causing UTI, their significance, additionally the challenges for remedy and prevention of catheter-associated UTI. This work appreciates a new understanding of bio-film producers which are having multi-drug resistance capability and focuses on the effect and control of bio-film producing uropathogenic bacteria related to catheterization. We have tried to analyze approaches to target bio-film and reported phytochemicals with anti-bio-film activity also updated on anti-bio-film therapy.
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Affiliation(s)
- Susmita Chakrabarty
- School of Paramedics and Allied Health Sciences, Centurion University of Technology and Management, Sitapur, Odisha, India
| | - Monali P Mishra
- School of Paramedics and Allied Health Sciences, Centurion University of Technology and Management, Sitapur, Odisha, India.
| | - Dipankar Bhattacharyay
- School of Applied Sciences, Centurion University of Technology and Management, Sitapur, Odisha, India
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10
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Zhu Y, McHale G, Dawson J, Armstrong S, Wells G, Han R, Liu H, Vollmer W, Stoodley P, Jakubovics N, Chen J. Slippery Liquid-Like Solid Surfaces with Promising Antibiofilm Performance under Both Static and Flow Conditions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:6307-6319. [PMID: 35099179 PMCID: PMC9096797 DOI: 10.1021/acsami.1c14533] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Biofilms are central to some of the most urgent global challenges across diverse fields of application, from medicine to industries to the environment, and exert considerable economic and social impact. A fundamental assumption in anti-biofilms has been that the coating on a substrate surface is solid. The invention of slippery liquid-infused porous surfaces─a continuously wet lubricating coating retained on a solid surface by capillary forces─has led to this being challenged. However, in situations where flow occurs, shear stress may deplete the lubricant and affect the anti-biofilm performance. Here, we report on the use of slippery omniphobic covalently attached liquid (SOCAL) surfaces, which provide a surface coating with short (ca. 4 nm) non-cross-linked polydimethylsiloxane (PDMS) chains retaining liquid-surface properties, as an antibiofilm strategy stable under shear stress from flow. This surface reduced biofilm formation of the key biofilm-forming pathogens Staphylococcus epidermidis and Pseudomonas aeruginosa by three-four orders of magnitude compared to the widely used medical implant material PDMS after 7 days under static and dynamic culture conditions. Throughout the entire dynamic culture period of P. aeruginosa, SOCAL significantly outperformed a typical antibiofilm slippery surface [i.e., swollen PDMS in silicone oil (S-PDMS)]. We have revealed that significant oil loss occurred after 2-7 day flow for S-PDMS, which correlated to increased contact angle hysteresis (CAH), indicating a degradation of the slippery surface properties, and biofilm formation, while SOCAL has stable CAH and sustainable antibiofilm performance after 7 day flow. The significance of this correlation is to provide a useful easy-to-measure physical parameter as an indicator for long-term antibiofilm performance. This biofilm-resistant liquid-like solid surface offers a new antibiofilm strategy for applications in medical devices and other areas where biofilm development is problematic.
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Affiliation(s)
- Yufeng Zhu
- School
of Engineering, Newcastle University, Newcastle Upon Tyne NE1
7RU, U.K.
| | - Glen McHale
- School
of Engineering, University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Jack Dawson
- School
of Engineering, Newcastle University, Newcastle Upon Tyne NE1
7RU, U.K.
| | - Steven Armstrong
- School
of Engineering, University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Gary Wells
- School
of Engineering, University of Edinburgh, Edinburgh EH9 3FB, U.K.
| | - Rui Han
- School
of Engineering, Newcastle University, Newcastle Upon Tyne NE1
7RU, U.K.
| | - Hongzhong Liu
- School
of Mechanical Engineering, Xi’an
Jiaotong University, Xi’an 710054, China
| | - Waldemar Vollmer
- Centre
for Bacterial Cell Biology, Biosciences Institute, Newcastle University, Newcastle
Upon Tyne NE2 4AX, U.K.
| | - Paul Stoodley
- Department
of Microbial Infection and Immunity and the Department of Orthopaedics, The Ohio State University, Columbus, Ohio 43210, United States
- National
Centre for Advanced Tribology at Southampton (nCATS), National Biofilm
Innovation Centre (NBIC), Mechanical Engineering, University of Southampton, Southampton S017 1BJ, U.K.
| | - Nicholas Jakubovics
- School
of Dental Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle
Upon Tyne NE2 4BW, U.K.
| | - Jinju Chen
- School
of Engineering, Newcastle University, Newcastle Upon Tyne NE1
7RU, U.K.
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11
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Hsu YH, Luong D, Asheghali D, Dove AP, Becker ML. Shape Memory Behavior of Biocompatible Polyurethane Stereoelastomers Synthesized via Thiol-Yne Michael Addition. Biomacromolecules 2022; 23:1205-1213. [PMID: 35044744 DOI: 10.1021/acs.biomac.1c01473] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Biodegradable shape memory elastomers have the potential for use in soft tissue engineering, drug delivery, and device fabrication applications. Unfortunately, few materials are able to meet the targeted degradation and mechanical properties needed for long-term implantable devices. In order to overcome these limitations, we have designed and synthesized a series of unsaturated polyurethanes that are elastic, degradable, and nontoxic to cells in vitro. The polymerization included a nucleophilic thiol-yne Michael addition between a urethane-based dipropiolate and a dithiol to yield an α,β-unsaturated carbonyl moiety along the polymer backbone. The alkene stereochemistry of the materials was tuned between 32 and 82% cis content using a combination of an organic base and solvent polarity, which collectively direct the nucleophilic addition. The bulk properties such as tensile strength, modulus, and glass transition temperature can also be tuned broadly, and the hydrogen bonding imparted by the urethane moiety allows for these materials to elicit cyclic shape memory behavior. We also demonstrated that the in vitro degradation properties are highly dependent on the alkene stereochemistry.
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Affiliation(s)
- Yen-Hao Hsu
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Derek Luong
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Darya Asheghali
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Andrew P Dove
- School of Chemistry, University of Birmingham, Birmingham B15 2TT, U.K
| | - Matthew L Becker
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States.,Departments of Mechanical Engineering and Materials Science, Biomedical Engineering, Orthopaedic Surgery Duke University, Durham, North Carolina 27708, United States
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12
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Palugan L, Cerea M, Cirilli M, Moutaharrik S, Maroni A, Zema L, Melocchi A, Uboldi M, Filippin I, Foppoli A, Gazzaniga A. Intravesical drug delivery approaches for improved therapy of urinary bladder diseases. INTERNATIONAL JOURNAL OF PHARMACEUTICS-X 2021; 3:100100. [PMID: 34765967 PMCID: PMC8569723 DOI: 10.1016/j.ijpx.2021.100100] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/05/2021] [Accepted: 10/08/2021] [Indexed: 12/17/2022]
Abstract
Diseases of the urinary bladder have high incidence rates and burden healthcare costs. Their pharmacological treatment involves systemic and local drug administration. The latter is generally accomplished through instillation of liquid formulations and requires repeated or long-term catheterization that is associated with discomfort, inflammation and bacterial infections. Consequently, compliance issues and dropouts are frequently reported. Moreover, instilled drugs are progressively diluted as the urine volume increases and rapidly excreted. When penetration of drugs into the bladder wall is needed, the poor permeability of the urothelium has also to be accounted for. Therefore, much research effort is spent to overcome these hurdles, thereby improving the efficacy of available therapies. Particularly, indwelling delivery systems suited for i) insertion into the bladder through the urethra, ii) intra-organ retention and prolonged release for the desired time lapse, iii) final elimination, either spontaneous or by manual removal, have been proposed to reduce the number of catheterization procedures and reach higher drug levels at the target site. Vesical retention of such devices is allowed by the relevant expansion that can either be triggered from the outside or achieved exploiting elastic and purposely 4D printed shape memory materials. In this article, the main rationales and strategies for improved intravesical delivery are reviewed.
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Affiliation(s)
- Luca Palugan
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Matteo Cerea
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Micol Cirilli
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Saliha Moutaharrik
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Alessandra Maroni
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Lucia Zema
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Alice Melocchi
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Marco Uboldi
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Ilaria Filippin
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Anastasia Foppoli
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
| | - Andrea Gazzaniga
- Dipartimento di Scienze Farmaceutiche, Sezione di Tecnologia e Legislazione Farmaceutiche "M.E. Sangalli", Università degli Studi di Milano, via G. Colombo 71, Milano 20133, Italy
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Kasza K, Gurnani P, Hardie KR, Cámara M, Alexander C. Challenges and solutions in polymer drug delivery for bacterial biofilm treatment: A tissue-by-tissue account. Adv Drug Deliv Rev 2021; 178:113973. [PMID: 34530014 DOI: 10.1016/j.addr.2021.113973] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/12/2021] [Accepted: 09/08/2021] [Indexed: 02/07/2023]
Abstract
To tackle the emerging antibiotic resistance crisis, novel antimicrobial approaches are urgently needed. Bacterial communities (biofilms) are a particular concern in this context. Biofilms are responsible for most human infections and are inherently less susceptible to antibiotic treatments. Biofilms have been linked with several challenging chronic diseases, including implant-associated osteomyelitis and chronic wounds. The specific local environments present in the infected tissues further contribute to the rise in antibiotic resistance by limiting the efficacy of systemic antibiotic therapies and reducing drug concentrations at the infection site, which can lead to reoccurring infections. To overcome the shortcomings of systemic drug delivery, encapsulation within polymeric carriers has been shown to enhance antimicrobial efficacy, permeation and retention at the infection site. In this Review, we present an overview of current strategies for antimicrobial encapsulation within polymeric carriers, comparing challenges and solutions on a tissue-by-tissue basis. We compare challenges and proposed drug delivery solutions from the perspective of the local environments for biofilms found in oral, wound, gastric, urinary tract, bone, pulmonary, vaginal, ocular and middle/inner ear tissues. We will also discuss future challenges and barriers to clinical translation for these therapeutics. The following Review demonstrates there is a significant imbalance between the research focus being placed on different tissue types, with some targets (oral and wound biofims) being extensively more studied than others (vaginal and otitis media biofilms and endocarditis). Furthermore, the importance of the local tissue environment when selecting target therapies is demonstrated, with some materials being optimal choices for certain sites of bacterial infection, while having limited applicability in others.
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Hall DC, Palmer P, Ji HF, Ehrlich GD, Król JE. Bacterial Biofilm Growth on 3D-Printed Materials. Front Microbiol 2021; 12:646303. [PMID: 34122361 PMCID: PMC8192718 DOI: 10.3389/fmicb.2021.646303] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 05/04/2021] [Indexed: 12/04/2022] Open
Abstract
Recent advances in 3D printing have led to a rise in the use of 3D printed materials in prosthetics and external medical devices. These devices, while inexpensive, have not been adequately studied for their ability to resist biofouling and biofilm buildup. Bacterial biofilms are a major cause of biofouling in the medical field and, therefore, hospital-acquired, and medical device infections. These surface-attached bacteria are highly recalcitrant to conventional antimicrobial agents and result in chronic infections. During the COVID-19 pandemic, the U.S. Food and Drug Administration and medical officials have considered 3D printed medical devices as alternatives to conventional devices, due to manufacturing shortages. This abundant use of 3D printed devices in the medical fields warrants studies to assess the ability of different microorganisms to attach and colonize to such surfaces. In this study, we describe methods to determine bacterial biofouling and biofilm formation on 3D printed materials. We explored the biofilm-forming ability of multiple opportunistic pathogens commonly found on the human body including Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus to colonize eight commonly used polylactic acid (PLA) polymers. Biofilm quantification, surface topography, digital optical microscopy, and 3D projections were employed to better understand the bacterial attachment to 3D printed surfaces. We found that biofilm formation depends on surface structure, hydrophobicity, and that there was a wide range of antimicrobial properties among the tested polymers. We compared our tested materials with commercially available antimicrobial PLA polymers.
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Affiliation(s)
- Donald C. Hall
- Department of Chemistry, Drexel University, Philadelphia, PA, United States
- Center for Advanced Microbial Processing and Center for Surgical Infections and Biofilms, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Philadelphia, PA, United States
| | - Phillip Palmer
- Center for Advanced Microbial Processing and Center for Surgical Infections and Biofilms, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Philadelphia, PA, United States
| | - Hai-Feng Ji
- Department of Chemistry, Drexel University, Philadelphia, PA, United States
| | - Garth D. Ehrlich
- Center for Advanced Microbial Processing and Center for Surgical Infections and Biofilms, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Philadelphia, PA, United States
- Department of Otolaryngology-Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, PA, United States
| | - Jarosław E. Król
- Center for Advanced Microbial Processing and Center for Surgical Infections and Biofilms, Institute for Molecular Medicine and Infectious Disease, Department of Microbiology and Immunology, Philadelphia, PA, United States
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15
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Chang CT, Chen YT, Hsieh YK, Girsang SP, Wang RS, Chang YC, Shen SH, Shen CR, Lin TP, Wan D, Wang J. Dual-functional antibiofilm polymer composite for biodegradable medical devices. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111985. [PMID: 33812613 DOI: 10.1016/j.msec.2021.111985] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/08/2021] [Accepted: 02/18/2021] [Indexed: 12/17/2022]
Abstract
Urinary tract infections (UTI) represent one of the most common problem within the urological disorders, and it is mainly caused by biofilm formation which leads to bacterial infection. Anti-adhesion and antibacterial agents are two primary mechanisms to prevent biofilm formation; however, current strategies are insufficiently effective. In this study, we developed an effective antibiofilm biodegradable polymer with high biocompatibility. Here we embedded silver nanoparticles (AgNPs) in poly(glycerol sebacate) acrylate (PGSA) followed by superhydrophilic modification on the polymer surfaces. The modified surfaces were characterized using SEM, AFM and contact angle measurements. This anti-adhesive surface prevented the adhesion of E. coli and limited the biofilm coverage percentage to less than 3% in 24 h. In the in vitro degradation, the long-term antibiofilm performance was evaluated in Nowatzki-Stoodley artificial urine (NSAU). The surface modified AgNPs embedded PGSA (sPGSA-AgNPs) was able to effectively inhibit the formation of biofilm by reducing the biofilm coverage to less than 0.01%, and it also showed low cytotoxicity with human bladder carcinoma cell. With the effective antibiofilm, biocompatibility and biodegradability, it is possible to be applied in urological devices to ameliorate the situation of UTIs.
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Affiliation(s)
- Chia-Teng Chang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Yi-Ting Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Yi-Kong Hsieh
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Samuel Pratama Girsang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Ryan S Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | | | - Shu-Huei Shen
- Department of Urology, Taipei Veterans General Hospital, Taipei 11217, Taiwan; School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan
| | - Claire R Shen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Tzu-Ping Lin
- Department of Radiology, Taipei Veterans General Hospital, Taipei 11217, Taiwan; School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan
| | - Dehui Wan
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Jane Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan.
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Influence of Hard Segment Content and Diisocyanate Structure on the Transparency and Mechanical Properties of Poly(dimethylsiloxane)-Based Urea Elastomers for Biomedical Applications. Polymers (Basel) 2021; 13:polym13020212. [PMID: 33435271 PMCID: PMC7827567 DOI: 10.3390/polym13020212] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/01/2021] [Accepted: 01/04/2021] [Indexed: 11/26/2022] Open
Abstract
The effect of hard segment content and diisocyanate structure on the transparency and mechanical properties of soft poly(dimethylsiloxane) (PDMS)-based urea elastomers (PSUs) was investigated. A series of PSU elastomers were synthesized from an aminopropyl-terminated PDMS (M¯n: 16,300 g·mol−1), which was prepared by ring chain equilibration of the monomers octamethylcyclotetrasiloxane (D4) and 1,3-bis(3-aminopropyl)-tetramethyldisiloxane (APTMDS). The hard segments (HSs) comprised diisocyanates of different symmetry, i.e., 4,4′-methylenebis(cyclohexyl isocyanate) (H12MDI), 4,4′-methylenebis(phenyl isocyanate) (MDI), isophorone diisocyanate (IPDI), and trans-1,4-cyclohexane diisocyanate (CHDI). The HS contents of the PSU elastomers based on H12MDI and IPDI were systematically varied between 5% and 20% by increasing the ratio of the diisocyanate and the chain extender APTMDS. PSU copolymers of very low urea HS contents (1.0–1.6%) were prepared without the chain extender. All PSU elastomers and copolymers exhibited good elastomeric properties and displayed elongation at break values between 600% and 1100%. The PSUs with HS contents below 10% were transparent and became increasingly translucent at HS contents of 15% and higher. The Young’s modulus (YM) and ultimate tensile strength values of the elastomers increased linearly with increasing HS content. The YM values differed significantly among the PSU copolymers depending on the symmetry of the diisocyanate. The softest elastomer was that based on the asymmetric IPDI. The elastomers synthesized from H12MDI and MDI both exhibited an intermediate YM, while the stiffest elastomer, i.e., that comprising the symmetric CHDI, had a YM three-times higher than that prepared with IPDI. The PSUs were subjected to load–unload cycles at 100% and 300% strain to study the influence of HS morphology on 10-cycle hysteresis behavior. At 100% strain, the first-cycle hysteresis values of the IPDI- and H12MDI-based elastomers first decreased to a minimum of approximately 9–10% at an HS content of 10% and increased again to 22–28% at an HS content of 20%. A similar, though less pronounced, trend was observed at 300% strain. First-cycle hysteresis among the PSU copolymers at 100% strain was lowest in the case of CHDI and highest in the IPDI-based elastomer. However, this effect was reversed at 300% strain, with CHDI displaying the highest hysteresis in the first cycle. In vitro cytotoxicity tests performed using HaCaT cells did not show any adverse effects, revealing their potential suitability for biomedical applications.
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Slippery Liquid-Infused Porous Polymeric Surfaces Based on Natural Oil with Antimicrobial Effect. Polymers (Basel) 2021; 13:polym13020206. [PMID: 33430082 PMCID: PMC7826890 DOI: 10.3390/polym13020206] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/11/2020] [Accepted: 01/05/2021] [Indexed: 01/31/2023] Open
Abstract
Many polymer materials have found a wide variety of applications in biomedical industries due to their excellent mechanical properties. However, the infections associated with the biofilm formation represent serious problems resulting from the initial bacterial attachment on the polymeric surface. The development of novel slippery liquid-infused porous surfaces (SLIPSs) represents promising method for the biofilm formation prevention. These surfaces are characterized by specific microstructural roughness able to hold lubricants inside. The lubricants create a slippery layer for the repellence of various liquids, such as water and blood. In this study, effective antimicrobial modifications of polyethylene (PE) and polyurethane (PU), as commonly used medical polymers, were investigated. For this purpose, low-temperature plasma treatment was used initially for activation of the polymeric surface, thereby enhancing surface and adhesion properties. Subsequently, preparation of porous microstructures was achieved by electrospinning technique using polydimethylsiloxane (PDMS) in combination with polyamide (PA). Finally, natural black seed oil (BSO) infiltrated the produced fiber mats acting as a lubricating layer. The optimized fiber mats' production was achieved using PDMS/PA mixture at ratio 1:1:20 (g/g/mL) using isopropyl alcohol as solvent. The surface properties of produced slippery surfaces were analyzed by various microscopic and optics techniques to obtain information about wettability, sliding behavior and surface morphology/topography. The modified PE and PU substrates demonstrated slippery behavior of an impinged water droplet at a small tilting angle. Moreover, the antimicrobial effects of the produced SLIPs using black seed oil were proven against Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli).
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Han S, Yao S, Meng W, Yang J. Rapid, controlled ring-opening polymerization of salicylic acid o-carboxyanhydride for poly(salicylate) synthesis. Polym Chem 2021. [DOI: 10.1039/d1py01309b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fast synthesis pathway of poly(salicylate) in mild conditions was explored, in which the combination of Lewis base and alcohol enables salicylic acid o-carboxyanhydride polymerize in seconds to afford well-defined hompolymers with high Tg.
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Affiliation(s)
- Song Han
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shiman Yao
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jing Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
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Gorbunova MA, Anokhin DV, Badamshina ER. Recent Advances in the Synthesis and Application of Thermoplastic Semicrystalline Shape Memory Polyurethanes. POLYMER SCIENCE SERIES B 2020. [DOI: 10.1134/s1560090420050073] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Ramachandra M, Mosayyebi A, Carugo D, Somani BK. Strategies to Improve Patient Outcomes and QOL: Current Complications of the Design and Placements of Ureteric Stents. Res Rep Urol 2020; 12:303-314. [PMID: 32802807 PMCID: PMC7403435 DOI: 10.2147/rru.s233981] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/19/2020] [Indexed: 12/13/2022] Open
Abstract
Ureteric stents have played a vital role in relieving urinary obstruction in many urological conditions. Although they are extremely successful, stents have been associated with complications and reduced patients' health-related quality of life (HRQoL). There are many factors that may affect the quality and longevity of stents. In this review, we have highlighted the journey and innovation of ureteric stents through the modern day. A literature review was conducted to identify relevant articles over the last 20 years. There is a plethora of evidence with various indications for the use of ureteral stents and how they affect QoL. There is still ongoing research to develop the ideal stent with reduced encrustation, one that resists infection and is also comfortable for the patients. Stents made from metal alloys, polymers and biodegradable materials have unique properties in their own right but also have certain deficiencies. These have been discussed along with an overview of newly developed stents. Certain pharmacological adjuncts have also been highlighted that may be useful to improve patient's tolerance to stents. In summary, this paper describes the features of the different types of stents and the problems that are frequently encountered, including effect on patients' HRQoL and financial burden to healthcare providers.
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Affiliation(s)
- Meghana Ramachandra
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
| | - Ali Mosayyebi
- Mechanical Engineering Department, Faculty of Engineering and the Environment, University of Southampton, Southampton, UK
- Institute for Life Sciences (IfLS), University of Southampton, UK
| | - Dario Carugo
- Mechanical Engineering Department, Faculty of Engineering and the Environment, University of Southampton, Southampton, UK
- Institute for Life Sciences (IfLS), University of Southampton, UK
| | - Bhaskar K Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
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21
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Srivastava GN, Malwe AS, Sharma AK, Shastri V, Hibare K, Sharma VK. Molib: A machine learning based classification tool for the prediction of biofilm inhibitory molecules. Genomics 2020; 112:2823-2832. [DOI: 10.1016/j.ygeno.2020.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 03/14/2020] [Accepted: 03/22/2020] [Indexed: 10/24/2022]
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Radiation Grafting of a Polymeric Prodrug onto Silicone Rubber for Potential Medical/Surgical Procedures. Polymers (Basel) 2020; 12:polym12061297. [PMID: 32517004 PMCID: PMC7361976 DOI: 10.3390/polym12061297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/28/2020] [Accepted: 06/03/2020] [Indexed: 01/08/2023] Open
Abstract
Silicone rubber (SR) is a material used for medical procedures, with a common example of its application being in implants for cosmetic or plastic surgeries. It is also an essential component for the development of medical devices. SR was functionalized with the polymeric prodrug of poly(2-methacryloyloxy-benzoic acid) (poly(2MBA)) to render the analgesic anti-inflammatory drug salicylic acid by hydrolysis. The system was designed by functionalizing SR films (0.5 cm × 1 cm) with a direct grafting method, using gamma irradiation (60Co source) to induce the polymerization process. The absorbed dose (from 20 to 100 kGy) and the monomer concentration (between 0.4 and 1.5 M) were critical in controlling the surface and the bulk modifications of SR. Grafting poly(2MBA) onto SR (SR-g-2MBA) were characterized by attenuated total reflectance Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy/energy-dispersive X-ray spectrometry, fluorescence microscopy, the contact angle, and the swelling. SR-g-2MBA demonstrated the drug’s sustained and pH-dependent release in simulated physiological mediums (pH = 5.5 and 7.4). The drug’s release was quantified by high-performance liquid chromatography and confirmed by gas chromatography–mass spectrometry. Finally, cytocompatibility was demonstrated in murine fibroblast and human cervical cancer cell lines. The developed systems provide new polymeric drug release systems for medical silicone applications.
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Metagenomic Insight Towards Vanillin-Mediated Membrane Biofouling Prevention: In Silico Docking Validation. Curr Microbiol 2020; 77:2233-2247. [PMID: 32382950 DOI: 10.1007/s00284-020-02003-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 04/24/2020] [Indexed: 10/24/2022]
Abstract
Biofouling leads to water quality deterioration and higher maintenance cost for cleaning of membranes. The present study has demonstrated the application of a biomolecule (vanillin) in scrubbing and destabilizing biofilms of drinking water reverse osmosis (RO) membrane module in lab scale reactor set-up. Reverse osmosis membrane reactor was connected with tap water supply and subjected with optimal concentration of vanillin. The pressure drop was delayed by 17-20 days as compared to control reactor. Real-time PCR analysis of metagenome indicated the reduced copy number of functional biofilm-associated genes (bdlA, lasI, pgaC) in treated membrane. SEM and metagenome analysis revealed that the sticky biofilm communities shifted to loosely bound emboli after vanillin treatment. Metagenome sequence analysis revealed the inhibitory activity against major biofouling biota like members of Proteobacteria, Acidobacteria, Acnitobacteria, Bacteroidetes, Candidatus, Nitrospira, and Firmicutes. Biofouled membrane metagenome sequence was also compared with real-life (brackish water, waste water, domestic drinking water) biofouled membrane communities. In silico docking of vanillin to receptor proteins and chemical configuration simulation along with other phenolic derivatives were performed, which suggested that the autoiducer signal capability of vanillin was effective against representative broad spectrum biofilm population. Vanillin exhibited the quorum-quenching mode of action by virtue of docking towards similar amino acid (Thr 131, Ilu 214) responsible of autoinducer signal anchoring in the transcriptional regulatory proteins.
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Wang H, Christiansen DE, Mehraeen S, Cheng G. Winning the fight against biofilms: the first six-month study showing no biofilm formation on zwitterionic polyurethanes. Chem Sci 2020; 11:4709-4721. [PMID: 34122926 PMCID: PMC8159170 DOI: 10.1039/c9sc06155j] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/13/2020] [Indexed: 12/12/2022] Open
Abstract
Biofilms have been a long-standing challenge for healthcare, water transport, and many other industries. They lead to bacterial growth and infections in animals, food products, and humans, cause premature removal of the implanted materials or devices from patients, and facilitate fouling and corrosion of metals. Despite some published and patented methods on minimizing the effects of biofilms for a short period (less than two weeks), there exists no successful means to mitigate or prevent the long-term formation of biofilms. It is even more challenging to integrate critical anti-fouling properties with other needed physical and chemical properties for a range of applications. In this study, we developed a novel approach for combining incompatible, highly polar anti-fouling groups with less polar, mechanically modifying groups into one material. A multifunctional carboxybetaine precursor was designed and introduced into polyurethane. The carboxybetaine precursors undergo rapid, self-catalyzed hydrolysis at the water/material interface and provide critical anti-fouling properties that lead to undetectable bacterial attachment and zero biofilm formation after six months of constant exposure to Pseudomonas aeruginosa and Staphylococcus epidermidis under the static condition in a nutrient-rich medium. This zwitterionic polyurethane is the first material to demonstrate both critical anti-biofilm properties and tunable mechanical properties and directly validates the unproven anti-fouling strategy and hypothesis for biofilm formation prevention. This approach of designing 'multitasking materials' will be useful for the development of next generation anti-fouling materials for a variety of applications.
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Affiliation(s)
- Huifeng Wang
- Department of Chemical Engineering, The University of Illinois at Chicago Chicago IL 60607 USA https://gancheng.people.uic.edu
| | - Daniel Edward Christiansen
- Department of Chemical Engineering, The University of Illinois at Chicago Chicago IL 60607 USA https://gancheng.people.uic.edu
| | - Shafigh Mehraeen
- Department of Chemical Engineering, The University of Illinois at Chicago Chicago IL 60607 USA https://gancheng.people.uic.edu
| | - Gang Cheng
- Department of Chemical Engineering, The University of Illinois at Chicago Chicago IL 60607 USA https://gancheng.people.uic.edu
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Lim CM, Li MX, Joung YK. Surface-Modifying Polymers for Blood-Contacting Polymeric Biomaterials. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1250:189-198. [PMID: 32601946 DOI: 10.1007/978-981-15-3262-7_13] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Bulk blending is considered as one of the most effective and straightforward ways to improve the hemo-compatibility of blood-contacting polymeric biomaterials among many surface modification methods. Zwitterionic structure-, glycocalyx-like structure-, and heparin-like structure-based oligomers have been synthesized as additives and blended with base polymers to improve the blood compatibility of base polymers. Fluorinated end- and side-functionalized oligomers could promote the migration of functionalized groups to the surface of biomedical polymers without changing their bulk properties, and it highly depends on the number and concentration of functional groups. Moreover, oligomers having both zwitterion and fluorine are receiving considerable attention due to their desirable phase separation, which can avoid undesired protein adsorption and platelet adhesion. The surface analysis of the surface-modified materials is usually investigated by analytical tools such as contact angle measurement, atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). Blood compatibility is mainly evaluated via platelet adhesion and protein adsorption test, and the result showed a significant decrease in the amount of undesirable adsorption. These analyses indicated that surface modification using bulk blending technique effectively improves blood compatibility of polymeric biomaterials.
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Affiliation(s)
- Chung-Man Lim
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Mei-Xian Li
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Yoon Ki Joung
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea. .,Division of Bio-Medical Science and Technology, Korea University of Science and Technology (UST), Deajeon, Republic of Korea.
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Urinary Catheter Coating Modifications: The Race against Catheter-Associated Infections. COATINGS 2019. [DOI: 10.3390/coatings10010023] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Urinary catheters are common medical devices, whose main function is to drain the bladder. Although they improve patients’ quality of life, catheter placement predisposes the patient to develop a catheter-associated urinary tract infection (CAUTI). The catheter is used by pathogens as a platform for colonization and biofilm formation, leading to bacteriuria and increasing the risk of developing secondary bloodstream infections. In an effort to prevent microbial colonization, several catheter modifications have been made ranging from introduction of antimicrobial compounds to antifouling coatings. In this review, we discuss the effectiveness of different coatings in preventing catheter colonization in vitro and in vivo, the challenges in fighting CAUTIs, and novel approaches targeting host–catheter–microbe interactions.
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Sorzabal-Bellido I, Diaz-Fernandez YA, Susarrey-Arce A, Skelton AA, McBride F, Beckett AJ, Prior IA, Raval R. Exploiting Covalent, H-Bonding, and π–π Interactions to Design Antibacterial PDMS Interfaces That Load and Release Salicylic Acid. ACS APPLIED BIO MATERIALS 2019; 2:4801-4811. [DOI: 10.1021/acsabm.9b00562] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ioritz Sorzabal-Bellido
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | - Yuri A. Diaz-Fernandez
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | - Arturo Susarrey-Arce
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | - Adam A. Skelton
- Department of Chemistry, University of Liverpool, Liverpool L69 3BX, U.K
- School of Health Sciences, University of KwaZulu-Natal, Westville campus, Durban 4000, South Africa
| | - Fiona McBride
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
| | | | - Ian A. Prior
- Biomedical EM Unit, University of Liverpool, Liverpool L69 3BX, U.K
| | - Rasmita Raval
- Open Innovation Hub for Antimicrobial Surfaces, Surface Science Research Centre, Department of Chemistry, and National Biofilm Innovation Centre, University of Liverpool, Liverpool L69 3BX, U.K
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Majeed A, Sagar F, Latif A, Hassan H, Iftikhar A, Darouiche RO, Mohajer MA. Does antimicrobial coating and impregnation of urinary catheters prevent catheter-associated urinary tract infection? A review of clinical and preclinical studies. Expert Rev Med Devices 2019; 16:809-820. [PMID: 31478395 DOI: 10.1080/17434440.2019.1661774] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Introduction: Catheter-associated urinary tract infection (CAUTI) is one of the most common nosocomial infections in hospitals, accounting for 36% of all health care-associated infections. Areas covered: We aimed to address the potential impact of antimicrobial coating of catheter materials for the prevention of CAUTI and to analyze the progress made in this field. We conducted literature searches in the PubMed, Embase, and Cochrane Library databases, and found 578 articles. Data from 60 articles in either the preclinical or clinical stage were analyzed in this expert review. Expert opinion: The literature review revealed many promising methods for preventing CAUTI. Recent studies have suggested the combination of silver-based products and antibiotics, owing to their synergistic effect, to help address the problem of antibiotic resistance. Other coating materials that have been tested include nitric oxide, chlorhexidine, antimicrobial peptides, enzymes, and bacteriophages. Because of heterogeneity among studies, it is difficult to reliably comment on the clinical efficacy of different coating materials. Future research should focus on double-blind randomized clinical trials for evaluating the role of these potential coating agents.
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Affiliation(s)
- Aneela Majeed
- Division of Infectious Diseases, Department of Medicine, Stanford University , Stanford , CA , USA
| | - Fnu Sagar
- Department of Medicine, University of Arizona , Tucson , AZ , USA
| | - Azka Latif
- Department of Medicine, Creighton University , Omaha , NE , USA
| | - Hamza Hassan
- Department of Medicine, Rochester General Hospital , Rochester , NY , USA
| | - Ahmad Iftikhar
- Department of Medicine, University of Arizona , Tucson , AZ , USA
| | - Rabih O Darouiche
- Section of Infectious Diseases, Michael E. DeBakey Veterans Affairs Medical Center Baylor College of Medicine , Houston , TX , USA.,Section of Infectious Diseases, Baylor College of Medicine , Houston , TX , USA
| | - Mayar Al Mohajer
- Section of Infectious Diseases, Baylor College of Medicine , Houston , TX , USA
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29
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Cattò C, Cappitelli F. Testing Anti-Biofilm Polymeric Surfaces: Where to Start? Int J Mol Sci 2019; 20:E3794. [PMID: 31382580 PMCID: PMC6696330 DOI: 10.3390/ijms20153794] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/02/2019] [Indexed: 12/11/2022] Open
Abstract
Present day awareness of biofilm colonization on polymeric surfaces has prompted the scientific community to develop an ever-increasing number of new materials with anti-biofilm features. However, compared to the large amount of work put into discovering potent biofilm inhibitors, only a small number of papers deal with their validation, a critical step in the translation of research into practical applications. This is due to the lack of standardized testing methods and/or of well-controlled in vivo studies that show biofilm prevention on polymeric surfaces; furthermore, there has been little correlation with the reduced incidence of material deterioration. Here an overview of the most common methods for studying biofilms and for testing the anti-biofilm properties of new surfaces is provided.
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Affiliation(s)
- Cristina Cattò
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy
| | - Francesca Cappitelli
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy.
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30
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A Review on Surface Modifications and Coatings on Implants to Prevent Biofilm. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2019. [DOI: 10.1007/s40883-019-00116-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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31
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Wang L, Zhang M, Lawson T, Kanwal A, Miao Z. Poly(butylene succinate- co-salicylic acid) copolymers and their effect on promoting plant growth. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190504. [PMID: 31417748 PMCID: PMC6689653 DOI: 10.1098/rsos.190504] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 06/11/2019] [Indexed: 06/10/2023]
Abstract
Biodegradable random copolymers were successfully synthesized by melt polycondensation of poly(butylene succinate) (PBS) and salicylic acid (SA). The obtained copolymers were characterized by proton nuclear magnetic resonance spectroscopy. The effect of different SA contents on the properties of copolymers was investigated by universal testing machine, thermogravimetric analyser, differential scanning calorimetry and X-ray diffraction analysis. The results showed that the copolymers with 0.5% SA contents exhibited excellent elastic modulus (1413.0 MPa) and tensile strength (192.8 MPa), and similar thermal decomposition temperature (≈320°C) compared with pure PBS. By molecular docking simulations, it was proved that the degradability of copolymers was more effective than that of pure PBS with a binding energy of -5.77 kcal mol-1. PBS copolymers with a small amount of SA were not only biodegradable but could stimulate the growth of green vegetables. So biodegradable copolymers can be used over a wide range as they are environmentally friendly.
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Affiliation(s)
- Lei Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
| | - Min Zhang
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
- College of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
| | - Tom Lawson
- ARC Centre of Excellence for Nanoscale Biophotonics, Macquarie University, Sydney, New South Wales 2109, Australia
| | - Aqsa Kanwal
- College of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, People's Republic of China
| | - Zongcheng Miao
- Key Laboratory of Organic Polymer Photoelectric Materials, Xijing University, Xi'an 710123, People's Republic of China
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32
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Francolini I, Silvestro I, Di Lisio V, Martinelli A, Piozzi A. Synthesis, Characterization, and Bacterial Fouling-Resistance Properties of Polyethylene Glycol-Grafted Polyurethane Elastomers. Int J Mol Sci 2019; 20:E1001. [PMID: 30823606 PMCID: PMC6412681 DOI: 10.3390/ijms20041001] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/15/2019] [Accepted: 02/20/2019] [Indexed: 12/13/2022] Open
Abstract
Despite advances in material sciences and clinical procedures for surgical hygiene, medical device implantation still exposes patients to the risk of developing local or systemic infections. The development of efficacious antimicrobial/antifouling materials may help with addressing such an issue. In this framework, polyethylene glycol (PEG)-grafted segmented polyurethanes were synthesized, physico-chemically characterized, and evaluated with respect to their bacterial fouling-resistance properties. PEG grafting significantly altered the polymer bulk and surface properties. Specifically, the PEG-grafted polyurethanes possessed a more pronounced hard/soft phase segregated microstructure, which contributed to improving the mechanical resistance of the polymers. The better flexibility of the soft phase in the PEG-functionalized polyurethanes compared to the pristine polyurethane (PU) was presumably also responsible for the higher ability of the polymer to uptake water. Additionally, dynamic contact angle measurements evidenced phenomena of surface reorganization of the PEG-functionalized polyurethanes, presumably involving the exposition of the polar PEG chains towards water. As a consequence, Staphylococcus epidermidis initial adhesion onto the surface of the PEG-functionalized PU was essentially inhibited. That was not true for the pristine PU. Biofilm formation was also strongly reduced.
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Affiliation(s)
- Iolanda Francolini
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy.
| | - Ilaria Silvestro
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy.
| | - Valerio Di Lisio
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy.
| | - Andrea Martinelli
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy.
| | - Antonella Piozzi
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy.
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33
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Scotland KB, Lo J, Grgic T, Lange D. Ureteral stent-associated infection and sepsis: pathogenesis and prevention: a review. BIOFOULING 2019; 35:117-127. [PMID: 30732463 DOI: 10.1080/08927014.2018.1562549] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 11/10/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
Ureteral stents are commonly used devices in hospital settings. However, their usage is often complicated by associated urinary tract infections as a result of bacterial adhesion onto the indwelling implant surfaces, followed by the formation of layers of biofilm. Once formed, the biofilm is exceedingly difficult to remove, potentially leading to further morbidity and even urosepsis. Urosepsis, where pathogens from the urinary tract enter the bloodstream, has a mortality rate of up to 50% of severely infected patients. Hence, it is important to understand its pathogenesis. In this review, ureteral stent-associated urinary tract infection and urosepsis will be addressed. In particular, the bacterial mechanisms involved, as well as the prevention and treatment of these infections will be discussed.
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Affiliation(s)
- Kymora B Scotland
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
| | - Joey Lo
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
| | - Thomas Grgic
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
| | - Dirk Lange
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
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34
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Radisavljevic A, Stojanovic DB, Perisic S, Djokic V, Radojevic V, Rajilic-Stojanovic M, Uskokovic PS. Cefazolin-loaded polycaprolactone fibers produced via different electrospinning methods: Characterization, drug release and antibacterial effect. Eur J Pharm Sci 2018; 124:26-36. [DOI: 10.1016/j.ejps.2018.08.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 07/19/2018] [Accepted: 08/17/2018] [Indexed: 12/16/2022]
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35
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Wang H, Hu Y, Lynch D, Young M, Li S, Cong H, Xu FJ, Cheng G. Zwitterionic Polyurethanes with Tunable Surface and Bulk Properties. ACS APPLIED MATERIALS & INTERFACES 2018; 10:37609-37617. [PMID: 30335927 DOI: 10.1021/acsami.8b10450] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To address the lack of blood compatibility and antifouling properties of polyurethanes (PUs), a novel zwitterionic poly(carboxybetaine urethane) (PCBHU) platform with excellent antifouling and tunable mechanical properties is presented. PCBHU was synthesized via the condensation polymerization of diisocyanate with carboxybetaine (CB)-based triols. Postpolymerization hydrolysis of triol segments at the interface generates zwitterionic CB functional groups that provide superior antifouling properties via the enhanced hydration capacities of CB groups. Thermogravimetric analysis and differential scanning calorimetry measurement show the high thermal stability of PCBHU with up to 305 °C degradation temperature. Tunable mechanical properties and water uptakes can be finely tuned by controlling the structure and ratio of CB-based triol cross-linkers. This study presents a new strategy to incorporate CB functional groups into PU without significantly changing the synthetic methods and conditions of PU. It also provides a deeper understanding on structure-property relationships of zwitterionic PUs. Because of its superior antifouling properties than existing PUs and similar cost, mechanical properties, stability, and processability, PCBHU has the great potential to replace current PUs and may open a new avenue to PUs for more challenging biomedical applications in which the existing PUs are limited by calcification and poor antifouling properties.
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Affiliation(s)
- Huifeng Wang
- Department of Chemical Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Yang Hu
- Department of Chemical Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Dylan Lynch
- Department of Chemical Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Megan Young
- Department of Chemical Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Shengxi Li
- Department of Chemical and Biomolecular Engineering , University of Akron , Akron , Ohio 44325 , United States
| | - Hongbo Cong
- Department of Chemical and Biomolecular Engineering , University of Akron , Akron , Ohio 44325 , United States
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Gang Cheng
- Department of Chemical Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
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36
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Thompson JM, Miller RJ, Ashbaugh AG, Dillen CA, Pickett JE, Wang Y, Ortines RV, Sterling RS, Francis KP, Bernthal NM, Cohen TS, Tkaczyk C, Yu L, Stover CK, DiGiandomenico A, Sellman BR, Thorek DL, Miller LS. Mouse model of Gram-negative prosthetic joint infection reveals therapeutic targets. JCI Insight 2018; 3:121737. [PMID: 30185667 DOI: 10.1172/jci.insight.121737] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 07/26/2018] [Indexed: 12/23/2022] Open
Abstract
Bacterial biofilm infections of implantable medical devices decrease the effectiveness of antibiotics, creating difficult-to-treat chronic infections. Prosthetic joint infections (PJI) are particularly problematic because they require prolonged antibiotic courses and reoperations to remove and replace the infected prostheses. Current models to study PJI focus on Gram-positive bacteria, but Gram-negative PJI (GN-PJI) are increasingly common and are often more difficult to treat, with worse clinical outcomes. Herein, we sought to develop a mouse model of GN-PJI to investigate the pathogenesis of these infections and identify potential therapeutic targets. An orthopedic-grade titanium implant was surgically placed in the femurs of mice, followed by infection of the knee joint with Pseudomonas aeruginosa or Escherichia coli. We found that in vitro biofilm-producing activity was associated with the development of an in vivo orthopedic implant infection characterized by bacterial infection of the bone/joint tissue, biofilm formation on the implants, reactive bone changes, and inflammatory immune cell infiltrates. In addition, a bispecific antibody targeting P. aeruginosa virulence factors (PcrV and Psl exopolysaccharide) reduced the bacterial burden in vivo. Taken together, our findings provide a preclinical model of GN-PJI and suggest the therapeutic potential of targeting biofilm-associated antigens.
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Affiliation(s)
| | | | | | | | - Julie E Pickett
- Department of Radiology and Radiological Sciences, Division of Nuclear Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yu Wang
- Department of Dermatology, and
| | | | | | - Kevin P Francis
- PerkinElmer, Hopkinton, Massachusetts, USA.,Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Santa Monica, California, USA
| | - Nicholas M Bernthal
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Santa Monica, California, USA
| | | | | | - Li Yu
- Statistical Sciences, MedImmune, Gaithersburg, Maryland, USA
| | | | | | | | - Daniel Lj Thorek
- Department of Radiology and Radiological Sciences, Division of Nuclear Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Cancer Molecular and Functional Imaging Program, Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, and
| | - Lloyd S Miller
- Department of Orthopaedic Surgery.,Department of Dermatology, and.,Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland, USA
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37
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Cattò C, Villa F, Cappitelli F. Recent progress in bio-inspired biofilm-resistant polymeric surfaces. Crit Rev Microbiol 2018; 44:633-652. [DOI: 10.1080/1040841x.2018.1489369] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Cristina Cattò
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, Milano, Italy
| | - Federica Villa
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, Milano, Italy
| | - Francesca Cappitelli
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, Milano, Italy
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38
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Algburi A, Zehm S, Netrebov V, Weeks R, Zubovskiy K, Chikindas ML. Benzoyl Peroxide Inhibits Quorum Sensing and Biofilm Formation by Gardnerella vaginalis 14018. Infect Dis Obstet Gynecol 2018; 2018:1426109. [PMID: 30057443 PMCID: PMC6051117 DOI: 10.1155/2018/1426109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/12/2018] [Accepted: 05/23/2018] [Indexed: 11/17/2022] Open
Abstract
Infection recurrence and antibiotic resistance of bacterial vaginosis-associated pathogenic biofilms underline the need for novel and effective treatment strategies. In this study, we evaluated the antimicrobial, antibiofilm, and quorum sensing inhibitory effects of benzoyl peroxide and salicylic acid against Gardnerella vaginalis ATCC 14018, the predominant pathogen of bacterial vaginosis. While the highest tested concentrations of 250 and 125 μg/mL for both compounds were not sufficient in completely inhibiting the growth of G. vaginalis ATCC 14018, they did prevent biofilm formation by inhibiting the bacterial quorum sensing system in the pathogen. To our knowledge, this report is the first evidence that benzoyl peroxide can have a quorum sensing-mediated biofilm controlling effect, as demonstrated using subinhibitory concentrations of this compound in order to reduce the cost, dosage, and negative side effects associated with current antimicrobial treatments.
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Affiliation(s)
- Ammar Algburi
- Department of Biochemistry and Microbiology, Rutgers State University, New Brunswick, NJ, USA
- Department of Biology and Biotechnology, College of Sciences, Diyala University, Baqubah, Iraq
| | - Saskia Zehm
- Department of Life Sciences and Technology, Beuth University of Applied Sciences, Berlin, Germany
| | - Victoria Netrebov
- Department of Biochemistry and Microbiology, Rutgers State University, New Brunswick, NJ, USA
- Health Promoting Natural Laboratory, School of Environmental and Biological Sciences, Rutgers State University, New Brunswick, NJ, USA
| | - Richard Weeks
- Health Promoting Natural Laboratory, School of Environmental and Biological Sciences, Rutgers State University, New Brunswick, NJ, USA
| | | | - Michael L. Chikindas
- Health Promoting Natural Laboratory, School of Environmental and Biological Sciences, Rutgers State University, New Brunswick, NJ, USA
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39
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Zhang T, Howell BA, Zhang D, Zhu B, Smith PB. Hyperbranched poly (ester) s for delivery of small molecule therapeutics. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4347] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tracy Zhang
- Michigan State University; St. Andrew Campus, 1910 W. St. Andrew Rd Midland MI 48640 USA
| | - Bob A. Howell
- Center for Applications in Polymer Science, Department of Chemistry; Central Michigan University; Mt. Pleasant MI 48859 USA
| | - Daniel Zhang
- Michigan State University; St. Andrew Campus, 1910 W. St. Andrew Rd Midland MI 48640 USA
| | - Brandon Zhu
- Michigan State University; St. Andrew Campus, 1910 W. St. Andrew Rd Midland MI 48640 USA
| | - Patrick B. Smith
- Michigan State University; St. Andrew Campus, 1910 W. St. Andrew Rd Midland MI 48640 USA
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40
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Salicylic Acid Based Hyperbranched Polyester: Synthesis, Characterization, Optical Properties and Antimicrobial Activity. Macromol Res 2018. [DOI: 10.1007/s13233-018-6116-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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41
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Konai MM, Bhattacharjee B, Ghosh S, Haldar J. Recent Progress in Polymer Research to Tackle Infections and Antimicrobial Resistance. Biomacromolecules 2018; 19:1888-1917. [PMID: 29718664 DOI: 10.1021/acs.biomac.8b00458] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Global health is increasingly being threatened by the rapid emergence of drug-resistant microbes. The ability of these microbes to form biofilms has further exacerbated the scenario leading to notorious infections that are almost impossible to treat. For addressing this clinical threat, various antimicrobial polymers, polymer-based antimicrobial hydrogels and polymer-coated antimicrobial surfaces have been developed in the recent past. This review aims to discuss such polymer-based antimicrobial strategies with a focus on their current advancement in the field. Antimicrobial polymers, whose designs are inspired from antimicrobial peptides (AMPs), are described with an emphasis on structure-activity analysis. Additionally, antibiofilm activity and in vivo efficacy are delineated to elucidate the real potential of these antimicrobial polymers as possible therapeutics. Antimicrobial hydrogels, prepared from either inherently antimicrobial polymers or biocide-loaded into polymer-derived hydrogel matrix, are elaborated followed by various strategies to engineer polymer-coated antimicrobial surfaces. In the end, the current challenges are accentuated along with future directions for further expansion of the field toward tackling infections and antimicrobial resistance.
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Affiliation(s)
- Mohini Mohan Konai
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Brinta Bhattacharjee
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Sreyan Ghosh
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit , Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bengaluru 560064 , Karnataka , India
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42
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Belfield K, Bayston R, Hajduk N, Levell G, Birchall JP, Daniel M. Evaluation of combinations of putative anti-biofilm agents and antibiotics to eradicate biofilms of Staphylococcus aureus and Pseudomonas aeruginosa. J Antimicrob Chemother 2018; 72:2531-2538. [PMID: 28859444 DOI: 10.1093/jac/dkx192] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 05/23/2017] [Indexed: 12/31/2022] Open
Abstract
Objectives To evaluate potential anti-biofilm agents for their ability to enhance the activity of antibiotics for local treatment of localized biofilm infections. Methods Staphylococcus aureus and Pseudomonas aeruginosa in vitro biofilm models were developed. The putative antibiotic enhancers N-acetylcysteine, acetylsalicylic acid, sodium salicylate, recombinant human deoxyribonuclease I, dispersin B, hydrogen peroxide and Johnson's Baby Shampoo (JBS) were tested for their anti-biofilm activity alone and their ability to enhance the activity of antibiotics for 7 or 14 days, against 5 day old biofilms. The antibiotic enhancers were paired with rifampicin and clindamycin against S. aureus and gentamicin and ciprofloxacin against P. aeruginosa. Isolates from biofilms that were not eradicated were tested for antibiotic resistance. Results Antibiotic levels 10× MIC and 100× MIC significantly reduced biofilm, but did not consistently eradicate it. Antibiotics at 100× MIC with 10% JBS for 14 days was the only treatment to eradicate both staphylococcal and pseudomonal biofilms. Recombinant human deoxyribonuclease I significantly reduced staphylococcal biofilm. Emergence of resistance of surviving isolates was minimal and was often associated with the small colony variant phenotype. Conclusions JBS enhanced the activity of antibiotics and several other promising anti-biofilm agents were identified. Antibiotics with 10% JBS eradicated biofilms produced by both organisms. Such combinations might be useful in local treatment of localized biofilm infections.
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Affiliation(s)
- Katherine Belfield
- Biomaterials-Related Infection Group, Department of Orthopaedics, Trauma and Sports Medicine, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - Roger Bayston
- Biomaterials-Related Infection Group, Department of Orthopaedics, Trauma and Sports Medicine, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - Nadzieja Hajduk
- Biomaterials-Related Infection Group, Department of Orthopaedics, Trauma and Sports Medicine, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - Georgia Levell
- Biomaterials-Related Infection Group, Department of Orthopaedics, Trauma and Sports Medicine, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - John P Birchall
- NIHR Nottingham Hearing Biomedical Research Unit, Nottingham University Hospitals, Ropewalk House, Nottingham, UK.,Otology and Hearing Group, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK.,Otorhinolaryngology, Nottingham University Hospitals, Queen's Medical Centre, Nottingham, UK
| | - Matija Daniel
- NIHR Nottingham Hearing Biomedical Research Unit, Nottingham University Hospitals, Ropewalk House, Nottingham, UK.,Otology and Hearing Group, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham, UK.,Otorhinolaryngology, Nottingham University Hospitals, Queen's Medical Centre, Nottingham, UK
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43
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Abstract
Purpose of Review There are three technological parameters that play a key role on the performance of an ideal stent. These are its material, design and surface coating. This article highlights some fundamental developments that took place in these three areas of stent’s technology, in order to contribute to the identification of an ideal stent. Recent Findings In addition to technological developments concerning stent’s material, design and surface coating, the flow dynamic performance of stents has recently attracted increasing attention. Notably, it has been postulated that the local flow field in a stent is correlated with the deposition of crystals and microorganisms. These findings could potentially revolutionise future stent’s designs, and complement developments made on materials and coatings. Summary The most relevant changes in materials, designs and surface coatings of ureteric stents are reviewed in this article. These are described in the context of a specific cause of stent’s failure they aim to address, with a particular focus on encrustation and biofilm formation.
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Affiliation(s)
- Ali Mosayyebi
- Bioengineering Science Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, UK. .,Institute for Life Sciences (IfLS), University of Southampton, Southampton, UK.
| | - Costantino Manes
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, Italy
| | - Dario Carugo
- Bioengineering Science Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, UK.,Institute for Life Sciences (IfLS), University of Southampton, Southampton, UK
| | - Bhaskar K Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
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44
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Cattò C, James G, Villa F, Villa S, Cappitelli F. Zosteric acid and salicylic acid bound to a low density polyethylene surface successfully control bacterial biofilm formation. BIOFOULING 2018; 34:440-452. [PMID: 29726716 DOI: 10.1080/08927014.2018.1462342] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/27/2018] [Indexed: 06/08/2023]
Abstract
The active moieties of the anti-biofilm natural compounds zosteric (ZA) and salicylic (SA) acids have been covalently immobilized on a low density polyethylene (LDPE) surface. The grafting procedure provided new non-toxic eco-friendly materials (LDPE-CA and LDPE-SA) with anti-biofilm properties superior to the conventional biocide-based approaches and with features suitable for applications in challenging fields where the use of antimicrobial agents is limited. Microbiological investigation proved that LDPE-CA and LDPE-SA: (1) reduced Escherichia coli biofilm biomass by up to 61% with a mechanism that did not affect bacterial viability; (2) significantly affected biofilm morphology, decreasing biofilm thickness, roughness, substratum coverage, cell and matrix polysaccharide bio-volumes by >80% and increasing the surface to bio-volume ratio; (3) made the biofilm more susceptible to ampicillin and ethanol. Since no molecules were leached from the surface, they remained constantly effective and below the lethal level; therefore, the risk of inducing resistance was minimized.
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Affiliation(s)
- C Cattò
- a Department of Food Environmental and Nutritional Sciences , Università degli Studi di Milano , Milan , Italy
- b Center for Biofilm Engineering , Montana State University , Bozeman , MT , USA
| | - G James
- b Center for Biofilm Engineering , Montana State University , Bozeman , MT , USA
| | - F Villa
- a Department of Food Environmental and Nutritional Sciences , Università degli Studi di Milano , Milan , Italy
| | - S Villa
- c Department of Pharmaceutical Sciences , Università degli Studi di Milano , Milan , Italy
| | - F Cappitelli
- a Department of Food Environmental and Nutritional Sciences , Università degli Studi di Milano , Milan , Italy
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Guildford A, Morris C, Kitt O, Cooper I. The effect of urinary Foley catheter substrate material on the antimicrobial potential of calixerene‐based molecules. J Appl Microbiol 2018; 124:1047-1059. [DOI: 10.1111/jam.13658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 09/05/2017] [Accepted: 11/20/2017] [Indexed: 11/27/2022]
Affiliation(s)
- A. Guildford
- School of Pharmacy & Biomolecular Sciences University of Brighton Brighton UK
| | - C. Morris
- School of Pharmacy & Biomolecular Sciences University of Brighton Brighton UK
| | - O. Kitt
- School of Pharmacy & Biomolecular Sciences University of Brighton Brighton UK
| | - I. Cooper
- School of Pharmacy & Biomolecular Sciences University of Brighton Brighton UK
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46
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Anjum S, Singh S, Benedicte L, Roger P, Panigrahi M, Gupta B. Biomodification Strategies for the Development of Antimicrobial Urinary Catheters: Overview and Advances. GLOBAL CHALLENGES (HOBOKEN, NJ) 2018; 2:1700068. [PMID: 31565299 PMCID: PMC6607219 DOI: 10.1002/gch2.201700068] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/05/2017] [Indexed: 05/27/2023]
Abstract
Microbial burden associated with medical devices poses serious health challenges and is accountable for an increased number of deaths leading to enormous medical costs. Catheter-associated urinary tract infections are the most common hospital-acquired infections with enhanced patient morbidity. Quite often, catheter-associated bacteriuria produces apparent adverse outcomes such as urosepsis and even death. Taking this into account, the methods to modify urinary catheters to control microbial infections with relevance to clinical drug resistance are systematically evaluated in this review. Technologies to restrict biofilm formation at initial stages by using functional nanomaterials are elucidated. The conventional methodology of using single therapeutic intervention for developing an antimicrobial catheter lacks clinically meaningful benefit. Therefore, catheter modification using naturally derived antimicrobials such as essential oils, curcumin, enzymes, and antimicrobial peptides in combination with synthetic antibiotics/nanoantibiotics is likely to exert sufficient inhibitory effect on uropathogens and is extensively discussed. Futuristic efforts in this area are projected here that demand clinical studies to address areas of uncertainty to avoid development of bacterial resistance to the new generation therapy with minimum discomfort to the patients.
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Affiliation(s)
- Sadiya Anjum
- Bioengineering LaboratoryDepartment of Textile TechnologyIndian Institute of TechnologyNew Delhi110016India
| | - Surabhi Singh
- Bioengineering LaboratoryDepartment of Textile TechnologyIndian Institute of TechnologyNew Delhi110016India
| | - Lepoittevin Benedicte
- ICMMO ‐ LG2M ‐ Bât 420Université Paris‐Sud XI, 15rue Georges Clémenceau91405Orsay CedexFrance
| | - Philippe Roger
- ICMMO ‐ LG2M ‐ Bât 420Université Paris‐Sud XI, 15rue Georges Clémenceau91405Orsay CedexFrance
| | - Manoj Panigrahi
- Department of Urology and PathologySikkim Manipal Institute of Medical SciencesGangtokSikkim737101India
| | - Bhuvanesh Gupta
- Bioengineering LaboratoryDepartment of Textile TechnologyIndian Institute of TechnologyNew Delhi110016India
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47
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Zhang Y, He X, Ding M, He W, Li J, Li J, Tan H. Antibacterial and Biocompatible Cross-Linked Waterborne Polyurethanes Containing Gemini Quaternary Ammonium Salts. Biomacromolecules 2018; 19:279-287. [PMID: 29253335 DOI: 10.1021/acs.biomac.7b01016] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A cross-linked waterborne polyurethane (CPTMGPU) with long-term stability was developed from poly(ethylene glycol) (PEG), polyoxytetramethylene glycol (PTMG), isophorone diisocyanate (IPDI), l-lysine, and its derivative diamine consisting of gemini quaternary ammonium salt (GQAS), using ethylene glycol diglycidyl ether (EGDE) as a cross-linker. Weight loss test, X-ray photoelectron spectroscopy (XPS) measurements, and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) were performed to prove the surface structure and stability of these CPTMGPU films. Furthermore, the GQAS-bearing CPTMGPUs show repeatable contact-active antibacterial efficacy against both Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli) bacteria and do not show any inhibition effect against fibroblasts in vitro. After subcutaneous implantation in rats, the CPTMGPU films manifest good biocompatibility in vivo, despite the presence of a typical foreign body reaction toward surrounding tissues and mild systematic inflammation reaction that could be eliminated after a short implantation period, as demonstrated by histology and immunohistochemistry combined with interleukin (IL)-1β, IL-4, IL-6, IL-10, and TNF-α analysis though enzyme-linked immunosorbent assay (ELISA) and real-time quantitative polymerase chain reaction (qRT-PCR). Therefore, these cross-linked waterborne polyurethanes hold great promise for antibacterial applications in vivo.
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Affiliation(s)
- Yi Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China.,High and New Technology Research Center, Henan Academy of Sciences , Zhengzhou 450002, China
| | - Xueling He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China.,Laboratory Animal Center of Sichuan University , Chengdu, 610040, China
| | - Mingming Ding
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Wei He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Jianshu Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
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48
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Marisol Arteaga-Luna M, Hugo Pino-Ramos V, Magaña H, Bucio E. Polymeric pro-drug sutures for potential local release of salicylic acid. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1378886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mónica Marisol Arteaga-Luna
- Department of Chemistry of Radiation and Radiochemistry, Institute of Nuclear Sciences, National Autonomous University of Mexico, Mexico
| | - Victor Hugo Pino-Ramos
- Department of Chemistry of Radiation and Radiochemistry, Institute of Nuclear Sciences, National Autonomous University of Mexico, Mexico
| | - Héctor Magaña
- Faculty of Chemical Sciences and Engineering, Autonomous University of Baja California, Tijuana, Baja California, Mexico
| | - Emilio Bucio
- Department of Chemistry of Radiation and Radiochemistry, Institute of Nuclear Sciences, National Autonomous University of Mexico, Mexico
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49
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Arndt P, Leistner ND, Neuss S, Kaltbeitzel D, Brook GA, Grosse J. Artificial urine and FBS supplemented media in cytocompatibility assays for PLGA-PEG-based intravesical devices using the urothelium cell line UROtsa. J Biomed Mater Res B Appl Biomater 2017; 106:2140-2147. [DOI: 10.1002/jbm.b.34021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 09/17/2017] [Accepted: 09/24/2017] [Indexed: 12/16/2022]
Affiliation(s)
- P. Arndt
- Department of Urology; RWTH Aachen University, Pauwelsstraße 30; 52074 Aachen Germany
| | - N. D. Leistner
- Department of Neuro-Urology; University Clinic Friedrich-Wilhelms-University Bonn and Neurologic Rehabilitation Centre Godeshöhe; Bonn Germany
| | - S. Neuss
- Helmholts Institute for Biomedical Engineering; Biointerface Group, RWTH Aachen University; Aachen Germany
- Institute of Pathology, RWTH Aachen University; Aachen Germany
| | - D. Kaltbeitzel
- Institute of Plastics Processing, RWTH Aachen University; Aachen Germany
| | - G. A. Brook
- Institute of Neuropathology, RWTH Aachen University; Aachen Germany
| | - J. Grosse
- Department of Urology; RWTH Aachen University, Pauwelsstraße 30; 52074 Aachen Germany
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50
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Mosayyebi A, Vijayakumar A, Yue QY, Bres-Niewada E, Manes C, Carugo D, Somani BK. Engineering solutions to ureteral stents: material, coating and design. Cent European J Urol 2017; 70:270-274. [PMID: 29104790 PMCID: PMC5656375 DOI: 10.5173/ceju.2017.1520] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 08/22/2017] [Accepted: 08/27/2017] [Indexed: 11/22/2022] Open
Abstract
Introduction An ideal stent would offer simple insertion and removal with no discomfort and/or migration, it would have no biofilm formation or encrustation and would also maintain the patient's quality of life. Material and methods In this mini-review, we outlined the engineering developments related to stent material, design and coating. Results There have been a wide variety of in-vitro, model-based, animal-based and clinical studies using a range of commercial and non-commercial stents. Ureteric stents have evolved since their first usage with a wider range of stent design, material and coating available for laboratory and clinical use. Conclusions While engineering innovations have led to the evolution of stents, more work needs to be done to address the issues relating to stent encrustation and biofilm formation.
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Affiliation(s)
- Ali Mosayyebi
- Bioengineering Science research group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom.,Institute for Life Sciences (IFLS), University of Southampton, Southampton, United Kingdom
| | - Aravinthan Vijayakumar
- Bioengineering Science research group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom
| | - Qi Y Yue
- Bioengineering Science research group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom
| | | | - Costantino Manes
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, Italy
| | - Dario Carugo
- Bioengineering Science research group, Faculty of Engineering and the Environment, University of Southampton, Southampton, United Kingdom.,Institute for Life Sciences (IFLS), University of Southampton, Southampton, United Kingdom
| | - Bhaskar K Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, United Kingdom
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