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Shalaby MA, Anwar MM, Saeed H. Nanomaterials for application in wound Healing: current state-of-the-art and future perspectives. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-021-02870-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
AbstractNanoparticles are the gateway to the new era in drug delivery of biocompatible agents. Several products have emerged from nanomaterials in quest of developing practical wound healing dressings that are nonantigenic, antishear stress, and gas-exchange permeable. Numerous studies have isolated and characterised various wound healing nanomaterials and nanoproducts. The electrospinning of natural and synthetic materials produces fine products that can be mixed with other wound healing medications and herbs. Various produced nanomaterials are highly influential in wound healing experimental models and can be used commercially as well. This article reviewed the current state-of-the-art and briefly specified the future concerns regarding the different systems of nanomaterials in wound healing (i.e., inorganic nanomaterials, organic and hybrid nanomaterials, and nanofibers). This review may be a comprehensive guidance to help health care professionals identify the proper wound healing materials to avoid the usual wound complications.
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Rasmussen S, Kjaer Petersen K, Kristiansen MK, Andersen JS, Aboo C, Thomsen ME, Skjoldemose E, Jørgensen NK, Stensballe A, Arendt-Nielsen L. Gold micro-particles for knee osteoarthritis. Eur J Pain 2022; 26:811-824. [PMID: 35076138 PMCID: PMC9307026 DOI: 10.1002/ejp.1909] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 12/29/2021] [Accepted: 01/08/2022] [Indexed: 11/22/2022]
Abstract
Background This exploratory study investigates if intra‐articular injected gold microparticles in knee osteoarthritis (KOA) reduce immunomodulatory‐based pain via proteomic changes in the synovial fluid (SF) and serum. Methods Thirty patients with moderate KOA were included. Intraarticular injections with 20 mg gold microparticles (72.000 particles, 20–40 µm in diameter) using the patient's synovial fluid (SF) as carrier were performed. Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) subscores for pain, stiffness, and function were assessed at inclusion, 8 weeks and 2 years The PainDetect questionnaire, pain pressure threshold (PPT), temporal summation (TS), and conditioned pain modulation (CPM), and pain diary were assessed at inclusion and 8 weeks. Proteome analysis was performed on SF and blood samples before and after 8 weeks of treatment. Results A decrease in WOMAC scores (pain (p = 0.0001), stiffness (p = 0.0088), activity (p = 0.0001)), PainDetect (p = 0.0002) and increase in PPT (p = 0.001) and CPM (p = 0.021) and a decrease in TS (p = 0.03) were found after 8 weeks compared to inclusion assessments. At 2 years follow‐up compared to baseline there was a decrease in WOMAC scores (pain (p = 0.0001), stiffness (p = 0.007), activity (p = 0.0001)) and PainDetect (p = 0.0001). In SF, 28 different proteins were downregulated and 11 upregulated (p < 0.05) mainly associated immune response. Similarly, 31 proteins were downregulated and 1 upregulated in serum (p < 0.05) reflecting key immune response and anatomical structure development processes. No adverse effects related to the treatment were recorded. Conclusions Gold microparticles injected intra‐articular in KOA joints may provide pain relief and an inflammatory modulatory effect based on proteome changes found in SF and serum. A randomized, controlled, double‐blind study is needed to infer a conclusion. Significance This study indicates that intra‐articular gold may provide advantages in clinical practice for managing knee osteoarthritic pain. The use of intraarticular gold can add new knowledge to the treatment of inflammation and pain.
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Affiliation(s)
- Sten Rasmussen
- Department of Clinical Medicine, Aalborg University.,Department of Orthopedic Surgery, Sport and Arthroscopy, Aalborg University Hospital
| | - Kristian Kjaer Petersen
- Department of Health Science and Technology, Aalborg University.,Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | | | | | | | | | | | | | | | - Lars Arendt-Nielsen
- Department of Health Science and Technology, Aalborg University.,Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Department of Medical Gastroenterology, Mech-Sense, Aalborg University Hospital
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Hazer Rosberg DB, Hazer B, Stenberg L, Dahlin LB. Gold and Cobalt Oxide Nanoparticles Modified Poly-Propylene Poly-Ethylene Glycol Membranes in Poly (ε-Caprolactone) Conduits Enhance Nerve Regeneration in the Sciatic Nerve of Healthy Rats. Int J Mol Sci 2021; 22:7146. [PMID: 34281198 PMCID: PMC8268459 DOI: 10.3390/ijms22137146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 12/15/2022] Open
Abstract
Reconstruction of nerve defects is a clinical challenge. Autologous nerve grafts as the gold standard treatment may result in an incomplete restoration of extremity function. Biosynthetic nerve conduits are studied widely, but still have limitations. Here, we reconstructed a 10 mm sciatic nerve defect in healthy rats and analyzed nerve regeneration in poly (ε-caprolactone) (PCL) conduits longitudinally divided by gold (Au) and gold-cobalt oxide (AuCoO) nanoparticles embedded in poly-propylene poly-ethylene glycol (PPEG) membranes (AuPPEG or AuCoOPPEG) and compared it with unmodified PPEG-membrane and hollow PCL conduits. After 21 days, we detected significantly better axonal outgrowth, together with higher numbers of activated Schwann cells (ATF3-labelled) and higher HSP27 expression, in reconstructed sciatic nerve and in corresponding dorsal root ganglia (DRG) in the AuPPEG and AuCoOPPEG groups; whereas the number of apoptotic Schwann cells (cleaved caspase 3-labelled) was significantly lower. Furthermore, numbers of activated and apoptotic Schwann cells in the regenerative matrix correlated with axonal outgrowth, whereas HSP27 expression in the regenerative matrix and in DRGs did not show any correlation with axonal outgrowth. We conclude that gold and cobalt-oxide nanoparticle modified membranes in conduits improve axonal outgrowth and increase the regenerative performance of conduits after nerve reconstruction.
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Affiliation(s)
- Derya Burcu Hazer Rosberg
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
- Department of Neurosurgery, Mugla Sitki Kocman University, Mugla 48100, Turkey
| | - Baki Hazer
- Department of Aircraft Airflame Engine Maintenance, Kapadokya University, Ürgüp 50420, Turkey;
- Department of Chemistry, Zonguldak Bülent Ecevit University, Zonguldak 67100, Turkey
| | - Lena Stenberg
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
| | - Lars B. Dahlin
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, 581 83 Linköping, Sweden
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Ammann KR, Hossainy SFA, Hossainy S, Slepian MJ. Hemocompatibility of polymers for use in vascular endoluminal implants. J Appl Polym Sci 2021. [DOI: 10.1002/app.51277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kaitlyn R. Ammann
- Department of Medicine College of Medicine, University of Arizona Tucson Arizona USA
- Sarver Heart Center, Arizona Health Sciences Center University of Arizona Tucson Arizona USA
| | - Syed F. A. Hossainy
- Department of Bioengineering College of Engineering, University of California Berkeley Berkeley California USA
| | - Sahir Hossainy
- Sarver Heart Center, Arizona Health Sciences Center University of Arizona Tucson Arizona USA
| | - Marvin J. Slepian
- Department of Medicine College of Medicine, University of Arizona Tucson Arizona USA
- Sarver Heart Center, Arizona Health Sciences Center University of Arizona Tucson Arizona USA
- Department of Biomedical Engineering College of Engineering, University of Arizona Tucson Arizona USA
- Department of Materials Science and Engineering College of Engineering, University of Arizona Tucson Arizona USA
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Fabrication of an electrochemical biosensor based on Fe3O4 nanoparticles and uricase modified carbon paste electrode for uric acid determination. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02749-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Erol A, Rosberg DBH, Hazer B, Göncü BS. Biodegradable and biocompatible radiopaque iodinated poly-3-hydroxy butyrate: synthesis, characterization and in vitro/in vivo X-ray visibility. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02747-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gizaw M, Thompson J, Faglie A, Lee SY, Neuenschwander P, Chou SF. Electrospun Fibers as a Dressing Material for Drug and Biological Agent Delivery in Wound Healing Applications. Bioengineering (Basel) 2018; 5:E9. [PMID: 29382065 PMCID: PMC5874875 DOI: 10.3390/bioengineering5010009] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/17/2018] [Accepted: 01/22/2018] [Indexed: 12/16/2022] Open
Abstract
Wound healing is a complex tissue regeneration process that promotes the growth of new tissue to provide the body with the necessary barrier from the outside environment. In the class of non-healing wounds, diabetic wounds, and ulcers, dressing materials that are available clinically (e.g., gels and creams) have demonstrated only a slow improvement with current available technologies. Among all available current technologies, electrospun fibers exhibit several characteristics that may provide novel replacement dressing materials for the above-mentioned wounds. Therefore, in this review, we focus on recent achievements in electrospun drug-eluting fibers for wound healing applications. In particular, we review drug release, including small molecule drugs, proteins and peptides, and gene vectors from electrospun fibers with respect to wound healing. Furthermore, we provide an overview on multifunctional dressing materials based on electrospun fibers, including those that are capable of achieving wound debridement and wound healing simultaneously as well as multi-drugs loading/types suitable for various stages of the healing process. Our review provides important and sufficient information to inform the field in development of fiber-based dressing materials for clinical treatment of non-healing wounds.
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Affiliation(s)
- Mulugeta Gizaw
- Department of Mechanical Engineering, College of Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA.
| | - Jeffrey Thompson
- Department of Mechanical Engineering, College of Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA.
| | - Addison Faglie
- Department of Mechanical Engineering, College of Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA.
| | - Shih-Yu Lee
- School of Nursing, College of Nursing and Health Sciences, The University of Texas at Tyler, Tyler, TX 75799, USA.
| | - Pierre Neuenschwander
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA.
| | - Shih-Feng Chou
- Department of Mechanical Engineering, College of Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA.
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Garle AL, White F, Budhlall BM. Improving the antifouling properties of polypropylene surfaces by melt blending with polyethylene glycol diblock copolymers. J Appl Polym Sci 2017. [DOI: 10.1002/app.46122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Amit L. Garle
- Department of Plastics Engineering and Center for High‐Rate NanomanufacturingUniversity of MassachusettsLowell Massachusetts 01854
- Mayo ClinicRochester Minnesota
| | - Fernanda White
- Department of Plastics Engineering and Center for High‐Rate NanomanufacturingUniversity of MassachusettsLowell Massachusetts 01854
| | - Bridgette M. Budhlall
- Department of Plastics Engineering and Center for High‐Rate NanomanufacturingUniversity of MassachusettsLowell Massachusetts 01854
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A Review of Injectable and Implantable Biomaterials for Treatment and Repair of Soft Tissues in Wound Healing. JOURNAL OF NANOTECHNOLOGY 2017. [DOI: 10.1155/2017/6341710] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The two major topics concerning the development of nanomedicine are drug delivery and tissue engineering. With the advance in nanotechnology, scientists and engineers now have the ability to fabricate functional drug carriers and/or biomaterials that deliver and release drugs locally as well as promote tissue regeneration. In this short review, we address the use of nanotechnology in the fabrication of biomaterials (i.e., nanoparticles and nanofibers) and their therapeutic function in wound healing as dressing materials. Furthermore, we discuss the use of surface nanofeatures to regulate cell adhesion, migration, proliferation, and differentiation, which is a crucial step in wound healing associated with tissue regeneration. Given that nanotechnology-based biomaterials exhibit superior pharmaceutical performance as compared to the traditional medicine, this short review provides current status and future directions of how nanotechnology is and will be used in biomedical field, especially in wound healing.
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Malviya R, Sharma PK, Dubey SK. Modification of polysaccharides: Pharmaceutical and tissue engineering applications with commercial utility (patents). MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:929-938. [DOI: 10.1016/j.msec.2016.06.093] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/08/2016] [Accepted: 06/29/2016] [Indexed: 12/25/2022]
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Şanal T, Koçak İ, Hazer B. Synthesis of comb-type amphiphilic graft copolymers derived from chlorinated poly(ɛ-caprolactone) via click reaction. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1757-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Korkut S, Kilic MS, Uzuncar S, Hazer B. Novel Graphene-Modified Poly(styrene-b-isoprene-b-styrene) Enzymatic Fuel Cell with Operation in Plant Leaves. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1143478] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Balcioglu S, Parlakpinar H, Vardi N, Denkbas EB, Karaaslan MG, Gulgen S, Taslidere E, Koytepe S, Ates B. Design of Xylose-Based Semisynthetic Polyurethane Tissue Adhesives with Enhanced Bioactivity Properties. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4456-4466. [PMID: 26824739 DOI: 10.1021/acsami.5b12279] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Developing biocompatible tissue adhesives with high adhesion properties is a highly desired goal of the tissue engineering due to adverse effects of the sutures. Therefore, our work involves synthesis, characterization, adhesion properties, protein adsorption, in vitro biodegradation, in vitro and in vivo biocompatibility properties of xylose-based semisynthetic polyurethane (NPU-PEG-X) bioadhesives. Xylose-based semisynthetic polyurethanes were developed by the reaction among 4,4'-methylenebis(cyclohexyl isocyanate) (MCI), xylose and polyethylene glycol 200 (PEG). Synthesized polyurethanes (PUs) showed good thermal stability and high adhesion strength. The highest values in adhesion strength were measured as 415.0 ± 48.8 and 94.0 ± 2.8 kPa for aluminum substrate and muscle tissue in 15% xylose containing PUs (NPU-PEG-X-15%), respectively. The biodegradation of NPU-PEG-X-15% was also determined as 19.96 ± 1.04% after 8 weeks of incubation. Relative cell viability of xylose containing PU was above 86%. Moreover, 10% xylose containing NPU-PEG-X (NPU-PEG-X-10%) sample has favorable tissue response, and inflammatory reaction between 1 and 6 weeks implantation period. With high adhesiveness and biocompatibility properties, NPU-PEG-X can be used in the medical field as supporting materials for preventing the fluid leakage after abdominal surgery or wound closure.
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Affiliation(s)
- Sevgi Balcioglu
- Department of Chemistry, Faculty of Science, Inonu University , Malatya 44280, Turkey
| | - Hakan Parlakpinar
- Department of Pharmacology, Faculty of Medicine, Inonu University , Malatya 44280, Turkey
| | - Nigar Vardi
- Department of Histology-Embryology, Faculty of Medicine, Inonu University , Malatya 44280, Turkey
| | - Emir Baki Denkbas
- Department of Chemistry, Faculty of Science, Hacettepe University , Ankara 06800, Turkey
| | | | - Selam Gulgen
- Department of Chemistry, Faculty of Science, Inonu University , Malatya 44280, Turkey
| | - Elif Taslidere
- Department of Histology-Embryology, Faculty of Medicine, Inonu University , Malatya 44280, Turkey
| | - Suleyman Koytepe
- Department of Chemistry, Faculty of Science, Inonu University , Malatya 44280, Turkey
| | - Burhan Ates
- Department of Chemistry, Faculty of Science, Inonu University , Malatya 44280, Turkey
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Gholivand MB, Torkashvand M, yavari E. Electrooxidation behavior of warfarin in Fe3O4 nanoparticles modified carbon paste electrode and its determination in real samples. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 48:235-42. [DOI: 10.1016/j.msec.2014.12.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 11/12/2014] [Accepted: 12/03/2014] [Indexed: 10/24/2022]
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Hazer DB, Bal E, Nurlu G, Benli K, Balci S, Öztürk F, Hazer B. In vivo application of poly-3-hydroxyoctanoate as peripheral nerve graft. J Zhejiang Univ Sci B 2014; 14:993-1003. [PMID: 24190445 DOI: 10.1631/jzus.b1300016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE This study aims to investigate the degree of biocompatibility and neuroregeneration of a polymer tube, poly-3-hydroxyoctanoate (PHO) in nerve gap repair. METHODS Forty Wistar Albino male rats were randomized into two groups: autologous nerve gap repair group and PHO tube repair group. In each group, a 10-mm right sciatic nerve defect was created and reconstructed accordingly. Neuroregeneration was studied by sciatic function index (SFI), electromyography, and immunohistochemical studies on Days 7, 21, 45 and 60 of implantation. Biocompatibility was analyzed by the capsule formation around the conduit. Biodegradation was analyzed by the molecular weight loss in vivo. RESULTS Electrophysiological and histomorphometric assessments demonstrated neuroregeneration in both groups over time. In the experimental group, a straight alignment of the Schwann cells parallel to the axons was detected. However, autologous nerve graft seems to have a superior neuroregeneration compared to PHO grafts. Minor biodegradation was observed in PHO conduit at the end of 60 d. CONCLUSIONS Although neuroregeneration is detected in PHO grafts with minor degradation in 60 d, autologous nerve graft is found to be superior in axonal regeneration compared to PHO nerve tube grafts. PHO conduits were found to create minor inflammatory reaction in vivo, resulting in good soft tissue response.
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Affiliation(s)
- D Burcu Hazer
- Department of Neurosurgery, Faculty of Medicine, Muğla Sıtkı Koçman University, Muğla 48000, Turkey; Atatürk Research and Medical Center, Neurosurgery Clinic, Ministry of Health of the Republic of Turkey, Ankara 06110, Turkey; Department of Neurology, Faculty of Medicine, School of Medicine, Hacettepe University, Ankara 06100, Turkey; Department of Neurosurgery, Faculty of Medicine, School of Medicine, Hacettepe University, Ankara 06100, Turkey; Atatürk Research and Medical Center, Department of Pathology, Yıldırım Beyazıt University, Ankara 06110, Turkey; Department of Histology and Embryology, Faculty of Medicine, Muğla Sıtkı Koçman University, Muğla 48000, Turkey; Department of Chemistry, Bülent Ecevit University, Zonguldak 67100, Turkey
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Prabhawathi V, Thirunavukarasu K, Doble M. A study on the long term effect of biofilm produced by biosurfactant producing microbe on medical implant. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 40:212-8. [DOI: 10.1016/j.msec.2014.03.050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 03/06/2014] [Accepted: 03/21/2014] [Indexed: 11/28/2022]
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Hazer DB, Mut M, Dinçer N, Saribas Z, Hazer B, Ozgen T. The efficacy of silver-embedded polypropylene-grafted polyethylene glycol-coated ventricular catheters on prevention of shunt catheter infection in rats. Childs Nerv Syst 2012; 28:839-46. [PMID: 22373811 DOI: 10.1007/s00381-012-1729-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Accepted: 02/15/2012] [Indexed: 10/28/2022]
Abstract
PURPOSE Catheter-related infection is a major complication of ventriculoperitoneal shunt in children. The aim of this study is to determine inflammatory response and the efficacy of polypropylene-grafted polyethylene glycol (PP-g-PEG) copolymer and silver nanoparticle-embedded PP-g-PEG (Ag-PP-g-PEG) polymer-coated ventricular catheters on the prevention of catheter-related infections on a new experimental model of ventriculoperitoneal shunt in rats. METHODS Thirty six Wistar albino rats were divided into six groups: group 1, unprocessed sterile silicone catheter-embedded group; group 2, sterile PP-g-PEG-coated catheter group; group 3, sterile Ag-PP-g-PEG-coated catheter group; group 4, infected unprocessed catheter group; group 5, infected PP-g-PEG-coated catheter group; and group 6, infected Ag-PP-g-PEG-coated catheter group, respectively. In all groups, 1-cm piece of designated catheters were placed into the cisterna magna. In groups 4, 5, and 6, all rats were infected with 0.2 mL of 10 × 10(6) colony forming units (CFU)/mL Staphylococcus epidermidis colonies before the catheters were placed. Thirty days after implantation, bacterial colonization in cerebrospinal fluid and on catheter pieces with inflammatory reaction in the brain parenchyma was analyzed quantitatively. RESULTS Sterile and infected Ag-PP-g-PEG-covered groups revealed significantly lower bacteria colony count on the catheter surface (ANOVA, 0 ± 0, p < 0.001; 1.08 ± 0.18, p < 0.05, respectively). There was moderate inflammatory response in the parenchyma in group 4, but in groups 5 and 6, it was similar to that of the sterile group (ANOVA, 16.33 ± 3.02, p < 0.001; 4.00 ± 0.68, p < 0.001, respectively). CONCLUSIONS The PP-g-PEG, especially Ag-PP-g-PEG polymer-coated ventricular catheters are more effective in preventing the catheter-related infection and created the least inflammatory reaction in the periventricular parenchyma.
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Affiliation(s)
- Derya Burcu Hazer
- Department of Neurosurgery, Muğla University Faculty of Medicine, Muğla, Turkey.
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