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Bangash F, Muddassir M, Barlow G. Surgical site application of antibiotics: A potential game changer for fracture-related infection care and antibiotic stewardship. J Orthop 2023; 46:139-142. [PMID: 38009080 PMCID: PMC10665590 DOI: 10.1016/j.jor.2023.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/29/2023] [Indexed: 11/28/2023] Open
Affiliation(s)
- Fahed Bangash
- Registrar Infectious Diseases and Medical Microbiology, Hull University Teaching Hospitals NHS Trust, UK
| | - Muhammad Muddassir
- Registrar Infectious Diseases and Medical Microbiology, Hull University Teaching Hospitals NHS Trust, UK
| | - Gavin Barlow
- Hull York Medical School, University of York, UK
- Hull University Teaching Hospitals NHS Trust, UK
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2
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Haonga BT, Ngunyale P, von Kaeppler EP, Donnelley CA, Won NY, Eliezer EN, Brown K, Flores M, O'Marr JM, Rodarte P, Urva M, Cortez A, Porco T, Morshed S, Shearer DW. A pilot, masked, randomized controlled trial to evaluate local gentamicin versus saline in open tibial fractures (pGO-Tibia). OTA Int 2023; 6:e268. [PMID: 37719315 PMCID: PMC10503693 DOI: 10.1097/oi9.0000000000000268] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 01/29/2023] [Indexed: 09/19/2023]
Abstract
Background Open tibial fractures have a high risk of infection that can lead to severe morbidity. Antibiotics administered locally at the site of the open wound are a potentially effective preventive measure, but there are limited data evaluating aminoglycoside antibiotics. The objective of this study was to assess the feasibility of a clinical trial to test the efficacy of local gentamicin in reducing the risk of fracture-related infection after open tibial fracture. Methods This study is a single-center, pilot, masked, randomized controlled trial conducted at the Muhimbili Orthopaedic Institute. Participants were randomized intraoperatively after wound closure to receive gentamicin solution or normal saline solution injected at the fracture site. Follow-ups were completed at 2 weeks, 6 weeks, 3 months, 6 months, 9 months, and 1 year postoperatively. The primary feasibility outcomes were the rate of enrollment and retention. The primary clinical outcome was the occurrence of fracture-related infection. Results Of 199 patients screened, 100 eligible patients were successfully enrolled and randomized over 9 months (11.1 patients/month). Complete data were recorded at baseline and follow-up for >95% of cases. The rate of follow-up at 6 weeks, 3 months, 6 months, 9 months, and 1 year were 70%, 68%, 69%, 61%, and 80%, respectively. There was no difference in adverse events or any of the measured primary and secondary outcomes. Conclusion This pilot study is among the first to evaluate locally administered gentamicin in open tibial fractures. Results indicate a rigorous clinical trial with acceptable rates of enrollment and follow-up to address this topic is possible in this setting.
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Affiliation(s)
| | | | - Ericka P. von Kaeppler
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Claire A. Donnelley
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Nae Y. Won
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | | | - Kelsey Brown
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Michael Flores
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Jamieson M. O'Marr
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Patricia Rodarte
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Mayur Urva
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Abigail Cortez
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - Travis Porco
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA
| | - Saam Morshed
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
| | - David W. Shearer
- Department of Orthopaedic Surgery, Institute for Global Orthopaedics and Traumatology, University of California San Francisco, San Francisco, CA; and
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Effect of Local Antibiotic Prophylaxis on Postoperative Deep Infection in Fracture Surgery: A Systematic Review and Meta-Analysis. J Orthop Trauma 2023; 37:e28-e35. [PMID: 36084224 DOI: 10.1097/bot.0000000000002487] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/02/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Despite the use of systemic antibiotic prophylaxis, postoperative infection after fracture surgery remains an issue. The purpose of this systematic review and meta-analysis was to evaluate the effect of locally applied antibiotics on deep infection in fracture surgery in both the open and closed fractures. DATA SOURCES A comprehensive search of MEDLINE, Embase, and PubMed was performed from the date of inception to April 15, 2021, and included studies in all languages. STUDY SELECTION Cohort studies were eligible if they investigated the effect on the infection rate of local antibiotic prophylaxis on deep infection after fracture surgery. DATA EXTRACTION This study was conducted according to the Cochrane Handbook for Systematic Reviews and reported as per the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Risk of bias was assessed using version 2 of the Cochrane risk-of-bias tool for randomized trials and the Methodological Index for Nonrandomized Studies tool where applicable. DATA SYNTHESIS An inverse variance random-effects model was the primary analysis model because of the anticipated diversity in the evaluated populations. Univariate models were used when a single outcome was of interest. CONCLUSIONS The risk of deep infection was significantly reduced when local antibiotics were applied compared with the control group receiving systemic prophylaxis only. This beneficial effect was observed in open fractures but failed to reach statistical significance in closed fractures. This meta-analysis suggests that there may be a significant risk reduction in deep infection rate after fracture surgery when local antibiotics are added to standard systemic prophylaxis, particularly in open fractures. Further high-powered Level I studies are needed to support these findings. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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4
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Flores MJ, Brown KE, Morshed S, Shearer DW. Evidence for Local Antibiotics in the Prevention of Infection in Orthopaedic Trauma. J Clin Med 2022; 11:jcm11247461. [PMID: 36556077 PMCID: PMC9782030 DOI: 10.3390/jcm11247461] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/18/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
Prevention of fracture-related infection (FRI) remains a substantial challenge in orthopaedic trauma care. There is evolving evidence to support the use of local antibiotics for both the prevention and treatment of musculoskeletal infection. Local antibiotics can achieve higher local tissue concentrations with a lower risk of systemic complications compared to intravenously administered antibiotics. These antibiotics may be administered in powder or liquid form without carrier, or if sustained release is desired, using a carrier. Polymethylmethacrylate (PMMA), ceramics, and hydrogels are examples of antibiotic carriers. Unlike PMMA, ceramics and hydrogels have the advantage of not requiring a second surgery for removal. The VANCO trial supported the use of powdered vancomycin in high-risk fracture cases for the reduction of Gram-positive infections; although, data is limited. Future studies will evaluate the use of aminoglycoside antibiotics to address Gram-negative infection prevention. While theoretical concerns exist with the use of local antibiotics, available studies suggest local antibiotics are safe with a low-risk of adverse effects.
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5
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Maruo A, Oda T, Mineo R, Miya H, Muratsu H, Fukui T, Oe K, Kuroda R, Niikura T. Continuous local antibiotic perfusion: A treatment strategy that allows implant retention in fracture-related infections. J Orthop Surg (Hong Kong) 2022; 30:10225536221111902. [PMID: 35765727 DOI: 10.1177/10225536221111902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Fracture-related infections are difficult to treat because of the formation of biofilms around implants. Systemic antibiotics are notoriously ineffective against biofilms due to their insufficient penetration of tissues with poor vascularity. The goal of treating fracture-related infections is to achieve bone union while retaining the implant. Our proposal of continuous local antibiotic perfusion is a sustained local delivery system of sufficient antibiotics to bone and soft tissue infection sites, including to bone marrow via needles as intra-medullary antibiotics perfusion and to soft-tissue via double-lumen subcutaneous tubes as intra-soft tissue perfusion. METHODS In this study, we examined the outcomes of 40 patients treated for fracture-related infections using continuous local antibiotic perfusion between 2015 and 2021 at Steel Memorial Hirohata Hospital, Himeji, Japan. RESULT The antibiotic used for continuous local antibiotic perfusion was gentamicin in all cases. Implant removal was required in five patients. Two patients required toe amputation and knee arthrodesis, while the remaining 38 patients achieved fracture union. Only one case of transient acute renal injury as a systemic side effect was observed, but it soon resolved. The blood concentration of gentamicin could be adjusted to less than the trough level. CONCLUSIONS Continuous local antibiotic perfusion is a novel local drug delivery system that has the potential of delivering sufficient concentrations of antibiotics with few systemic side effects; it is a useful option for the treatment of fracture-related infections.
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Affiliation(s)
- Akihiro Maruo
- Department of Orthopaedic Surgery, 38240Steel Memorial Hirohata Hospital, Himeji, Japan
| | - Takahiro Oda
- Department of Orthopaedic Surgery, 13705Hyogo Prefectural Nishinomiya Hospital, Nishinomiya, Japan
| | - Ryowa Mineo
- Department of Orthopaedic Surgery, 38240Steel Memorial Hirohata Hospital, Himeji, Japan
| | - Hidetoshi Miya
- Department of Orthopaedic Surgery, 38240Steel Memorial Hirohata Hospital, Himeji, Japan
| | - Hirotsugu Muratsu
- Department of Orthopaedic Surgery, 38240Steel Memorial Hirohata Hospital, Himeji, Japan
| | - Tomoaki Fukui
- Department of Orthopaedic Surgery, 538585Kobe University Graduate School of Medicine, Kobe, Japan
| | - Keisuke Oe
- Department of Orthopaedic Surgery, 538585Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, 538585Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takahiro Niikura
- Department of Orthopaedic Surgery, 538585Kobe University Graduate School of Medicine, Kobe, Japan
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6
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Pargas CD, Elhessy AH, Abouei M, Gesheff MG, Conway JD. Tobramycin Blood Levels after Local Antibiotic Treatment of Bone and Soft Tissue Infection. Antibiotics (Basel) 2022; 11:antibiotics11030336. [PMID: 35326799 PMCID: PMC8944707 DOI: 10.3390/antibiotics11030336] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/24/2022] [Accepted: 02/28/2022] [Indexed: 02/04/2023] Open
Abstract
Local antibiotic delivery using different carriers plays an important role in both infection prophylaxis and treatment. Besides dead space management, these carriers have the advantage of providing a high concentration of local antibiotics with a lower risk of systemic toxicity. Few studies have reported on systemic toxicity associated with antibiotic-impregnated carriers. The present study investigates the systemic tobramycin concentration at 24, 48 and 72 h postoperatively after using tobramycin-loaded polymethyl methacrylate (PMMA) and calcium sulfate (CS) as local antibiotic carriers. Additionally, this work assesses the renal function postoperatively for indications of acute kidney injury (AKI). Fifty-two patients were treated in 58 procedures with tobramycin and vancomycin-loaded PMMA, CS, or both. All systemic tobramycin levels were <2 mcg/mL at 72 h, and the resulting rate of AKI was 12% (7/58). In conclusion, local tobramycin antibiotic delivery using PMMA, CS, or both remains a safe and effective modality in the treatment of osteomyelitis as long as the surgeon is aware of its possible nephrotoxic effect.
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7
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Zhu H, Gao Y, Wang C, Chen Z, Yu X, Qi X, Sun Q, Zhang W, Song W. A nomogram for decision-making assistance on surgical treatment of chronic osteomyelitis in long bones: Establishment and validation based on a retrospective multicenter cohort. Int J Surg 2022; 99:106267. [PMID: 35202861 DOI: 10.1016/j.ijsu.2022.106267] [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: 10/18/2021] [Revised: 01/04/2022] [Accepted: 02/15/2022] [Indexed: 12/11/2022]
Abstract
BACKGROUND Chronic osteomyelitis remains a major challenge for orthopedic surgeons due to its high recurrence rate. Surgeons currently have few tools to estimate the likelihood of individual recurrence. We here aimed to develop a nomogram to better estimate individual recurrence rate after surgical treatment of chronic osteomyelitis in long bones. METHODS We first retrospectively identified patients as training cohort who had received surgical treatment of chronic osteomyelitis in long bones between January 2010 and January 2016 from four hospitals. Patient demographic, microbiological, clinical, and therapeutic variables were collected and analyzed. Univariate and multivariate analyses were performed successively to identify independently predictive factors for recurrence. To reduce overfitting, the Bayesian information criterion was used to reduce variables in the original model. Nomograms were created with the reduced model after model selection. The nomogram was then internally validated with bootstrap resampling. We then further validated the performance of the established nomogram in validation cohort (data from two distinct institutions). RESULTS Recurrence was found in 136 of 655 (20.8%) and 52 of 201 patients (25.9%) in training and validation cohorts respectively. We included six independent prognostic factors for recurrence in our prediction model: number of previous recurrences, epiphysial involvement, preoperative serum albumin level, axial length of the infectious lesion, lesion-removal method, and application of a muscular flap. After incorporating these six factors, the nomogram achieved good discrimination, with concordance indexes of 0.82 (95% CI, 0.79-0.85) and 0.80 (95% CI, 0.78-0.83) in predicting recurrence in the training and validation cohorts, respectively. Calibration curves were well fitted for both training and validation cohorts. CONCLUSIONS Our nomogram achieved good preoperative prediction of recurrence in chronic osteomyelitis of long bones. Using this nomogram, the recurrence risk can be confidently predicted for each patient and treatment plan. After considering and discussing the functional prognosis with patients, physicians can establish a rational therapeutic plan. LEVEL OF EVIDENCE Prognostic, Level III.
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Affiliation(s)
- Hongyi Zhu
- Department of Orthopaedic Surgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, China Shanghai Eighth People's Hospital, Shanghai, China Shanghai Minhang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, China Shanghai Zhujiajiao People's Hospital, Shanghai, China The Fifth Hospital of Wuhan City, Wuhan, Hubei, China Jinghong First People's Hospital, Xishuangbanna, Yunnan, China
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8
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Marston S, Mirick Mueller G, Sabin A, Hansen GT, Lindgren B, Aparicio C, Armstrong AR, Larsen OH, Schmidt A, Kyle R, Gustilo R, Tsukayama D, Bechtold J, Bue M. Systemic versus free antibiotic delivery in preventing acute exogenous implant related infection in a rat model. J Orthop Res 2022; 40:429-438. [PMID: 33913540 DOI: 10.1002/jor.25052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/15/2020] [Accepted: 04/12/2021] [Indexed: 02/04/2023]
Abstract
We studied systemic ceftriaxone, and free/local tobramycin and doxycycline in a controlled rat model representing a generic acute exogenous joint infection. We hypothesized that evidence of infection (quantitative colony forming units [CFU], qualitative scanning electron microscopy [SEM], histopathology) (1a) would be reduced with local versus systemic antibiotic, (1b) any antibiotic would be superior to control, (2) there would be a difference among antibiotics, and (3) antibiotic would not be detectable in serum at 4-week euthanasia. Study groups included infected and noninfected (1) control (no treatment), (2) systemic ceftriaxone (daily), (3) local tobramycin, and (4) local doxycycline (10 rats/group; power = 0.8). With IACUC approval, a reliable acute exogenous joint infection was created by slowly injecting 50-μl, 104 CFU Staphylococcus aureus, into the distal femoral medullary canal. The antibiotic formulation was introduced locally to the femoral canal and joint space. After 4 weeks, serum, pin, bone, and synovium were obtained. CFU/ml of bone and synovium were quantified using macrotiter method. SEM imaged biofilm on the surface of the pin, histopathology identified tissue response, liquid chromatography/mass spectrometry quantified plasma antibiotic. (1) Groups receiving any antibiotic reported lower CFU/ml in synovium compared with no treatment. (2) In the synovium, free/local tobramycin reduced CFU/ml to a greater extent than free/local doxycycline (p < 0.05). (3) Antibiotic in plasma after the local application was nondetectable in all groups after 4 weeks. SEM revealed no difference in biofilm on pin among all groups.
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Affiliation(s)
- Scott Marston
- University of Minnesota, Minneapolis, Minnesota, USA
| | | | - Arick Sabin
- Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
| | - Glen T Hansen
- University of Minnesota, Minneapolis, Minnesota, USA.,Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
| | | | | | | | - Ole H Larsen
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
| | - Andrew Schmidt
- University of Minnesota, Minneapolis, Minnesota, USA.,Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
| | - Richard Kyle
- University of Minnesota, Minneapolis, Minnesota, USA.,Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
| | - Ramon Gustilo
- University of Minnesota, Minneapolis, Minnesota, USA.,Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
| | - Dean Tsukayama
- University of Minnesota, Minneapolis, Minnesota, USA.,Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
| | - Joan Bechtold
- University of Minnesota, Minneapolis, Minnesota, USA.,Hennepin Healthcare Research Institute, Minneapolis, Minnesota, USA
| | - Mats Bue
- Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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9
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Kim EK, Donnelley CA, Tiee M, Roberts HJ, Von Kaeppler E, Shearer D, Morshed S. Prophylactic Topical Antibiotics in Fracture Repair and Spinal Fusion. Adv Orthop 2021; 2021:1949877. [PMID: 34691783 PMCID: PMC8531801 DOI: 10.1155/2021/1949877] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 09/09/2021] [Accepted: 09/11/2021] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION The objective of this systematic review with meta-analysis is to determine whether prophylactic local antibiotics prevent surgical site infections (SSIs) in instrumented spinal fusions and traumatic fracture repair. A secondary objective is to investigate the effect of vancomycin, a common local antibiotic of choice, on the microbiology of SSIs. METHODS An electronic search of PubMed, EMBASE, and Web of Science databases and major orthopedic surgery conferences was conducted to identify studies that (1) were instrumented spinal fusions or fracture repair and (2) had a treatment group that received prophylactic local antibiotics. Both randomized controlled trials (RCTs) and comparative observational studies were included. Meta-analysis was performed separately for randomized and nonrandomized studies with subgroup analysis by study design and antibiotic. RESULTS Our review includes 44 articles (30 instrumented spinal fusions and 14 fracture repairs). Intrawound antibiotics significantly decreased the risk of developing SSIs in RCTs of fracture repair (RR 0.61, 95% CI: 0.40-0.93, I 2 = 32.5%) but not RCTs of instrumented spinal fusion. Among observational studies, topical antibiotics significantly reduced the risk of SSIs in instrumented spinal fusions (OR 0.34, 95% CI: 0.27-0.43, I 2 = 52.4%) and in fracture repair (OR 0.49, 95% CI: 0.37-0.65, I 2 = 43.8%). Vancomycin powder decreased the risk of Gram-positive SSIs (OR 0.37, 95% CI: 0.27-0.51, I 2 = 0.0%) and had no effect on Gram-negative SSIs (OR 0.95, 95% CI: 0.62-1.44, I 2 = 0.0%). CONCLUSIONS Prophylactic intrawound antibiotic administration decreases the risk of SSIs in fracture surgical fixation in randomized studies. Therapeutic efficacy in instrumented spinal fusion was seen in only nonrandomized studies. Vancomycin appears to be an effective agent against Gram-positive pathogens. There is no evidence that local vancomycin powder is associated with an increased risk for Gram-negative infection.
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Affiliation(s)
- Eric K. Kim
- University of California San Francisco, School of Medicine, San Francisco, California, USA
| | - Claire A. Donnelley
- Institute for Global Orthopaedics and Traumatology, Department of Orthopaedics, University of California, San Francisco, California, USA
| | - Madeline Tiee
- University of California San Francisco, School of Medicine, San Francisco, California, USA
| | - Heather J. Roberts
- University of California San Francisco, Department of Orthopaedic Surgery, San Francisco, California, USA
| | - Ericka Von Kaeppler
- Institute for Global Orthopaedics and Traumatology, Department of Orthopaedics, University of California, San Francisco, California, USA
| | - David Shearer
- University of California San Francisco, Department of Orthopaedic Surgery, San Francisco, California, USA
| | - Saam Morshed
- University of California San Francisco, Department of Orthopaedic Surgery, San Francisco, California, USA
- University of California San Francisco, Department of Epidemiology and Biostatistics, San Francisco, California, USA
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10
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Yu YH, Lin YT, Hsu YH, Chou YC, Ueng SWN, Liu SJ. Biodegradable Antimicrobial Agent/Analgesic/Bone Morphogenetic Protein-Loaded Nanofibrous Fixators for Bone Fracture Repair. Int J Nanomedicine 2021; 16:5357-5370. [PMID: 34408414 PMCID: PMC8364851 DOI: 10.2147/ijn.s325885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/03/2021] [Indexed: 12/28/2022] Open
Abstract
Purpose Postoperative infection and pain management are of great concern to orthopedic surgeons. Although there are several protocols available to deal with these aspects, they are fraught with complications, such as cartilage damage, cardiovascular and neurological intoxication, and systemic adverse responses. Therefore, it is necessary to develop safe and effective perioperative protocols. In the current study, antimicrobial agents/analgesics/growth factor-embedded biodegradable hybrid fixators (polycaprolactone fixator + poly[lactide-co-glycolide] sheath-core structured nanofibers) for bone fracture repair were designed. Methods The biodegradable hybrid fixators were fabricated using solution-extrusion three-dimensional printing and electrospinning. In vitro, the characteristics of the hybrid fixators were examined. Additionally, the release of the incorporated vancomycin, ceftazidime, lidocaine, and bone morphogenetic protein-2 (BMP-2) was evaluated. The in vivo efficacy including drug-eluting properties, fracture repair, and pain management of the biomolecule-loaded nanofibrous fixators was investigated in rabbit rib-fracture models. Results The nanofibrous fixators released vancomycin, ceftazidime, and lidocaine in a sustained manner under both in vitro and in vivo conditions and protected BMP-2 from burst release. The implantation of these hybrid fixators around the fractured rib significantly improved animal activities and bone union, indicating that the inclusion of analgesic in the fixator effectively reduced postsurgical pain and thereby helped in recovery. Conclusion The novel biomolecule-loaded nanofibrous hybrid fixators resulted in excellent therapeutic outcomes. These fixators may be effective in the repair of rib fractures in clinical settings and may help mitigate surgical complications, such as infection, nonunion, and intolerable postoperative pain.
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Affiliation(s)
- Yi-Hsun Yu
- Department of Orthopedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital, Tao-Yuan, 33305, Taiwan
| | - Yu-Ting Lin
- Department of Mechanical Engineering, Chang Gung University, Tao-Yuan, 33302, Taiwan
| | - Yung-Heng Hsu
- Department of Orthopedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital, Tao-Yuan, 33305, Taiwan
| | - Ying-Chao Chou
- Department of Orthopedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital, Tao-Yuan, 33305, Taiwan
| | - Steve W N Ueng
- Department of Orthopedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital, Tao-Yuan, 33305, Taiwan
| | - Shih-Jung Liu
- Department of Orthopedic Surgery, Bone and Joint Research Center, Chang Gung Memorial Hospital, Tao-Yuan, 33305, Taiwan.,Department of Mechanical Engineering, Chang Gung University, Tao-Yuan, 33302, Taiwan
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11
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Functionalization of Synthetic Bone Substitutes. Int J Mol Sci 2021; 22:ijms22094412. [PMID: 33922517 PMCID: PMC8122961 DOI: 10.3390/ijms22094412] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 12/11/2022] Open
Abstract
Bone substitutes have been applied to treat osseous defects for a long time. To prevent implant related infection (IRI) and enhance bone healing functionalized biomaterials, antibiotics and osteoinductive substances have been introduced. This study gives an overview of the current available surface-coated bone substitutes and provides an outlook for future perspectives.
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12
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A Hyaluronic Acid Hydrogel Loaded with Gentamicin and Vancomycin Successfully Eradicates Chronic Methicillin-Resistant Staphylococcus aureus Orthopedic Infection in a Sheep Model. Antimicrob Agents Chemother 2021; 65:AAC.01840-20. [PMID: 33526492 DOI: 10.1128/aac.01840-20] [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: 08/26/2020] [Accepted: 01/18/2021] [Indexed: 12/15/2022] Open
Abstract
Implantable orthopedic devices have had an enormously positive impact on human health; however, despite best practice, patients are prone to developing orthopedic device-related infections (ODRI) that have high treatment failure rates. One barrier to the development of improved treatment options is the lack of an animal model that may serve as a robust preclinical assessment of efficacy. We present a clinically relevant large animal model of chronic methicillin-resistant Staphylococcus aureus (MRSA) ODRI that persists despite current clinical practice in medical and surgical treatment at rates equivalent to clinical observations. Furthermore, we showed that an injectable, thermoresponsive, hyaluronic acid-based hydrogel loaded with gentamicin and vancomycin outperforms current clinical practice treatment in this model, eliminating bacteria from all animals. These results confirm that local antibiotic delivery with an injectable hydrogel can dramatically increase treatment success rates beyond current clinical practice, with efficacy proven in a robust animal model.
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13
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The Efficacy of Negative Pressure Wound Therapy and Antibiotic Beads in Lower Extremity Salvage. J Surg Res 2020; 247:499-507. [DOI: 10.1016/j.jss.2019.09.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 07/03/2019] [Accepted: 09/25/2019] [Indexed: 01/05/2023]
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14
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Abstract
Fracture-related infection (FRI) remains a challenging complication that imposes a heavy burden on orthopaedic trauma patients. The surgical management eradicates the local infectious focus and if necessary facilitates bone healing. Treatment success is associated with debridement of all dead and poorly vascularized tissue. However, debridement is often associated with the formation of a dead space, which provides an ideal environment for bacteria and is a potential site for recurrent infection. Dead space management is therefore of critical importance. For this reason, the use of locally delivered antimicrobials has gained attention not only for local antimicrobial activity but also for dead space management. Local antimicrobial therapy has been widely studied in periprosthetic joint infection, without addressing the specific problems of FRI. Furthermore, the literature presents a wide array of methods and guidelines with respect to the use of local antimicrobials. The present review describes the scientific evidence related to dead space management with a focus on the currently available local antimicrobial strategies in the management of FRI. LEVEL OF EVIDENCE:: Therapeutic Level V. See Instructions for Authors for a complete description of levels of evidence.
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Chiu CH, Lei KF, Chan YS, Ueng SWN, Chen ACY. Real-time detection of antibiotics cytotoxicity in rabbit periosteal cells using microfluidic devices with comparison to conventional culture assays. BMC Musculoskelet Disord 2019; 20:339. [PMID: 31349830 PMCID: PMC6659314 DOI: 10.1186/s12891-019-2705-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 07/04/2019] [Indexed: 02/13/2023] Open
Abstract
Background Local antibiotic application has been widely used in orthopedic surgery. The dose-related toxicity of antibiotics towards periosteal tissues and resulting effects on osteogenic expression are yet to be studied. Methods Periosteal cells harvested from the medial tibia of New Zealand White rabbits were used. A seeding density of 5 × 103 cells/cm2 was determined to be optimal for testing in the pilot study; the cells were cultured in xCELLigence 96-well plates. Microfluidic impedance analyzers were used to monitor cellular proliferation in microfluidic culture systems with exposure to three different concentrations (10 μg/mL, 100 μg/mL, and 1000 μg/mL) of cefazolin, ciprofloxacin, and vancomycin, respectively. The correlation of cell index at day 7 with optical density values from WST-1 assays using conventional cultures was evaluated by calculating the Pearson’s coefficient. RNA analysis was performed to investigate the expression of osteogenic markers in the cultured cells, including core-binding factor alpha 1 (Cbfa1), osteopontin (OPN), and osteopontin promoter (OPNp), relative to glyceraldehyde-3-phosphate dehydrogenase (GAPDH) as the endogenous control. Results A significant dose-related inhibition of cell index was found for all the 3 antibiotics, whereas the WST-1 assays showed a significant dose-related inhibition of cellular proliferation only at a high dose of cefazolin (1000 μg/mL) and medium-to-high dose of ciprofloxacin (100 μg/mL and 1000 μg/mL). Pearson’s coefficient analysis indicated a high correlation between the cell index and optical density values of WST-1 assays only for medium and high doses of ciprofloxacin (100 μg/mL and 1000 μg/mL); a moderate correlation was seen for cefazolin, and a low dose of ciprofloxacin (10 μg/mL). RNA analysis confirmed significant dose-related inhibition of cfba1, OPN, and OPNp expression by all three antibiotics. Conclusion With optimal seeding amounts, rabbit periosteal cells can be dynamically monitored in the xCELLigence microfluidic system. Dose-related inhibition of cellular proliferation and osteogenic expression was found after exposure to cefazolin and ciprofloxacin. By providing real-time detection and exhibiting comparable correlation, microfluidic impedance-based analyzer is a feasible alternative to the conventional WST-1 assays.
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Affiliation(s)
- Chih-Hao Chiu
- Bone and Joint Research Center, Department of Orthopedic Surgery, Chang Gung Memorial Hospital-Linkou and University College of Medicine, 5th, Fu-Shin Street, Kweishan Dist, Taoyuan, 333, Taiwan, Republic of China.,Graduate Institute of Medical Mechatronics, Chang Gung University, Taiwan, Republic of China
| | - Kin Fong Lei
- Graduate Institute of Medical Mechatronics, Chang Gung University, Taiwan, Republic of China
| | - Yi-Sheng Chan
- Bone and Joint Research Center, Department of Orthopedic Surgery, Chang Gung Memorial Hospital-Linkou and University College of Medicine, 5th, Fu-Shin Street, Kweishan Dist, Taoyuan, 333, Taiwan, Republic of China
| | - Steve W N Ueng
- Bone and Joint Research Center, Department of Orthopedic Surgery, Chang Gung Memorial Hospital-Linkou and University College of Medicine, 5th, Fu-Shin Street, Kweishan Dist, Taoyuan, 333, Taiwan, Republic of China
| | - Alvin Chao-Yu Chen
- Bone and Joint Research Center, Department of Orthopedic Surgery, Chang Gung Memorial Hospital-Linkou and University College of Medicine, 5th, Fu-Shin Street, Kweishan Dist, Taoyuan, 333, Taiwan, Republic of China.
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Abstract
Objectives The aim of this study was to analyze drain fluid, blood, and urine simultaneously to follow the long-term release of vancomycin from a biphasic ceramic carrier in major hip surgery. Our hypothesis was that there would be high local vancomycin concentrations during the first week with safe low systemic trough levels and a complete antibiotic release during the first month. Methods Nine patients (six female, three male; mean age 75.3 years (sd 12.3; 44 to 84)) with trochanteric hip fractures had internal fixations. An injectable ceramic bone substitute, with hydroxyapatite in a calcium sulphate matrix, containing 66 mg of vancomycin per millilitre, was inserted to augment the fixation. The vancomycin elution was followed by simultaneously collecting drain fluid, blood, and urine. Results The antibiotic concentration in the drain reached a peak during the first six hours post-surgery (mean 966.1 mg/l), which decreased linearly to a mean value of 88.3 mg/l at 2.5 days. In the urine, the vancomycin concentration reached 99.8 mg/l during the first two days, followed by a logarithmic decrease over the next two weeks to reach 0 mg/l at 20 days. The systemic concentration of vancomycin measured in blood serum was low and decreased linearly from 2.17 mg/l at one hour post-surgery to 0 mg/l at four days postoperatively. Conclusion This is the first long-term pharmacokinetic study that reports vancomycin release from a biphasic injectable ceramic bone substitute. The study shows initial high targeted local vancomycin levels, sustained and complete release at three weeks, and systemic concentrations well below toxic levels. The plain ceramic bone substitute has been proven to regenerate bone but should also be useful in preventing bone infection. Cite this article: M. Stravinskas, M. Nilsson, A. Vitkauskiene, S. Tarasevicius, L. Lidgren. Vancomycin elution from a biphasic ceramic bone substitute. Bone Joint Res 2019;8:49–54. DOI: 10.1302/2046-3758.82.BJR-2018-0174.R2.
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Affiliation(s)
- M Stravinskas
- Orthopaedic Surgeon, Lithuanian University of Health, Kaunas, Lithuania
| | - M Nilsson
- Department of Orthopedics, Lund University Hospital, Lund, Sweden
| | - A Vitkauskiene
- Orthopaedic Surgeon, Lithuanian University of Health, Kaunas, Lithuania
| | - S Tarasevicius
- Orthopaedic Surgeon, Lithuanian University of Health, Kaunas, Lithuania
| | - L Lidgren
- Department of Orthopedics, Lund University Hospital, Lund, Sweden
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17
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Chang Y, Bhandari M, Zhu KL, Mirza RD, Ren M, Kennedy SA, Negm A, Bhatnagar N, Naji FN, Milovanovic L, Fei Y, Agarwal A, Kamran R, Cho SM, Schandelmaier S, Wang L, Jin L, Hu S, Zhao Y, Lopes LC, Wang M, Petrisor B, Ristevski B, Siemieniuk RA, Guyatt GH. Antibiotic Prophylaxis in the Management of Open Fractures. JBJS Rev 2019; 7:e1. [DOI: 10.2106/jbjs.rvw.17.00197] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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18
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Liu C, You JX, Chen YX, Zhu WF, Wang Y, Lv PP, Zhao F, Li HY, Li L. Effect of Induced Membrane Formation Followed by Polymethylmethacrylate Implantation on Diabetic Foot Ulcer Healing When Revascularization Is Not Feasible. J Diabetes Res 2019; 2019:2429136. [PMID: 31828156 PMCID: PMC6885796 DOI: 10.1155/2019/2429136] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/22/2019] [Indexed: 01/04/2023] Open
Abstract
No study has investigated the role of induced membrane (IM) formation in treating diabetic foot ulcer (DFU). This retrospective study was aimed (1) at evaluating the potential role of a two-staged surgical approach, comprising polymethylmethacrylate (PMMA) implantation and IM formation, in the treatment of DFU and (2) at comparing the results of those with routine wound debridement in patients with DFUs and nonrevascularized peripheral arterial disease (PAD). Fifty patients with infected DFUs who were not candidates for vascular interventions were enrolled between February 2016 and April 2018 and assigned to the PMMA group (n = 28) and conventional group (n = 22). The healing rate, major amputation rate, duration of healing, frequency of debridement procedures, patient survival rate, and reulceration of DFUs were determined. The Mann-Whitney U test, independent sample t-test, and χ 2 or Fisher exact test were used in statistical analysis. Overall clinical outcomes were statistically different between the groups (Z = -2.495, P = 0.013). In the PMMA group, 16 patients (57.1%) with intact IM formation achieved ulceration healing at 13.1 ± 3.7 weeks with a mean number of debridements of 1.3 ± 0.4, which were significantly different compared to those values in 5 patients of the conventional group (22.7%, P = 0.014; healing duration: 26.4 ± 7.8 weeks, P = 0.016; mean number of debridements: 3.6 ± 0.5, P ≤ 0.001). At a mean 16.8 ± 4.3-month follow-up, patient survival rates were 92.9% and 68.2% in the PMMA and conventional groups, respectively (P = 0.032). The major amputation rate and reulceration of DFUs were similar between the groups. The two-staged surgical approach is an available, effective modality for improving healing of DFUs. This study provides preliminary information of IM formation followed by PMMA implantation in the management of DFUs in PAD when revascularization is not feasible.
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Affiliation(s)
- Chao Liu
- Department of Orthopedics, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Jia-Xing You
- Department of Orthopedics, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Yi-Xin Chen
- Department of Endocrinology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Wei-Fen Zhu
- Department of Endocrinology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Ying Wang
- Wound and Ostomy Care Clinic, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Pan-Pan Lv
- Department of Ultrasound, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Feng Zhao
- Department of Clinical Laboratory, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Hong-Ye Li
- Department of Orthopedics, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
| | - Lin Li
- Department of Endocrinology, Zhejiang University School of Medicine Sir Run Run Shaw Hospital, #3 E. Qingchun Rd, Hangzhou 310016, China
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Stravinskas M, Tarasevicius S, Laukaitis S, Nilsson M, Raina DB, Lidgren L. A ceramic bone substitute containing gentamicin gives good outcome in trochanteric hip fractures treated with dynamic hip screw and in revision of total hip arthroplasty: a case series. BMC Musculoskelet Disord 2018; 19:438. [PMID: 30522476 PMCID: PMC6284312 DOI: 10.1186/s12891-018-2360-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 11/22/2018] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND The primary objective was to investigate the clinical and radiological outcome in patients undergoing major hip surgery using a novel antibiotic containing bone substitute for local augmentation in trochanteric fracture fixation or revision of total hip arthroplasty (THA). METHODS We implanted a novel biphasic bone substitute CERAMENT™|G consisting of hydroxyapatite, calcium sulphate and gentamicin for bone regeneration and local antibiotic delivery in 20 patients treated surgically for trochanteric femoral fracture or uncemented hip revision. Preoperative, postoperative, 3 months and 1 year clinical and radiological assessment were performed including registration of any complications. In one trochanteric fracture patient, histological analyses were performed of bone biopsies taken at removal of hardware. RESULTS None of the trochanteric fractures or revision of THA showed any large migration. No local wound disturbances were seen and no infection was observed at one year follow-up. All trochanteric fractures healed at 3 months with a minimal sliding screw displacement on average 3 mm. Radiological analysis showed signs of bone remodeling and new bone formation in the substitute, illustrated also by histology in the biopsies taken from one trochanteric fracture at one year post-op. CONCLUSIONS Local CERAMENT™|G was shown to be safe in a limited prospective major hip surgery study. Remodeling of the bone graft substitute was observed in all patients. TRIAL REGISTRATION EU-CTR2018-004414-18 Retrospectively registered on November 20, 2018.
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MESH Headings
- Aged
- Aged, 80 and over
- Anti-Bacterial Agents/administration & dosage
- Arthroplasty, Replacement, Hip/adverse effects
- Arthroplasty, Replacement, Hip/instrumentation
- Arthroplasty, Replacement, Hip/methods
- Bone Remodeling
- Bone Screws
- Bone Substitutes
- Calcium Sulfate
- Drug Combinations
- Durapatite
- Feasibility Studies
- Female
- Follow-Up Studies
- Fracture Fixation, Internal/adverse effects
- Fracture Fixation, Internal/instrumentation
- Fracture Fixation, Internal/methods
- Gentamicins/administration & dosage
- Hip/diagnostic imaging
- Hip/surgery
- Hip Fractures/diagnostic imaging
- Hip Fractures/surgery
- Humans
- Male
- Middle Aged
- Osteogenesis
- Postoperative Complications
- Prospective Studies
- Radiography
- Reoperation/adverse effects
- Reoperation/instrumentation
- Reoperation/methods
- Treatment Outcome
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Affiliation(s)
| | | | | | - Malin Nilsson
- Department of Orthopedics, Lund University Hospital, Lund, Sweden
| | | | - Lars Lidgren
- Department of Orthopedics, Lund University Hospital, Lund, Sweden
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20
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One-stage exchange with antibacterial hydrogel coated implants provides similar results to two-stage revision, without the coating, for the treatment of peri-prosthetic infection. Knee Surg Sports Traumatol Arthrosc 2018; 26:3362-3367. [PMID: 29549387 DOI: 10.1007/s00167-018-4896-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 03/12/2018] [Indexed: 02/06/2023]
Abstract
PURPOSE Aim of this study was to verify the hypothesis that a one-stage exchange procedure, performed with an antibiotic-loaded, fast-resorbable hydrogel coating, provides similar infection recurrence rate than a two-stage procedure without the coating, in patients affected by peri-prosthetic joint infection (PJI). METHODS In this two-center case-control, study, 22 patients, treated with a one-stage procedure, using implants coated with an antibiotic-loaded hydrogel [defensive antibacterial coating (DAC)], were compared with 22 retrospective matched controls, treated with a two-stage revision procedure, without the coating. RESULTS At a mean follow-up of 29.3 ± 5.0 months, two patients (9.1%) in the DAC group showed an infection recurrence, compared to three patients (13.6%) in the two-stage group. Clinical scores were similar between groups, while average hospital stay and antibiotic treatment duration were significantly reduced after one-stage, compared to two-stage (18.9 ± 2.9 versus 35.8 ± 3.4 and 23.5 ± 3.3 versus 53.7 ± 5.6 days, respectively). CONCLUSIONS Although in a relatively limited series of patients, our data shows similar infection recurrence rate after one-stage exchange with DAC-coated implants, compared to two-stage revision without coating, with reduced overall hospitalization time and antibiotic treatment duration. These findings warrant further studies in the possible applications of antibacterial coating technologies to treat implant-related infections. LEVEL OF EVIDENCE III.
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21
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Development and Evaluation of an Injectable Chitosan/β-Glycerophosphate Paste as a Local Antibiotic Delivery System for Trauma Care. J Funct Biomater 2018; 9:jfb9040056. [PMID: 30322006 PMCID: PMC6306749 DOI: 10.3390/jfb9040056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/23/2018] [Accepted: 10/09/2018] [Indexed: 01/03/2023] Open
Abstract
Complex open musculoskeletal wounds are a leading cause of morbidity worldwide, partially due to a high risk of bacterial contamination. Local delivery systems may be used as adjunctive therapies to prevent infection, but they may be nondegradable, possess inadequate wound coverage, or migrate from the wound site. To address this issue, a thermo-responsive, injectable chitosan paste was fabricated by incorporating beta-glycerophosphate. The efficacy of thermo-paste as an adjunctive infection prevention tool was evaluated in terms of cytocompatibility, degradation, antibacterial, injectability, and inflammation properties. In vitro studies demonstrated thermo-paste may be loaded with amikacin and vancomycin and release inhibitory levels for at least 3 days. Further, approximately 60% of thermo-paste was enzymatically degraded within 7 days in vitro. The viability of cells exposed to thermo-paste exceeded ISO 10993-5 standards with approximately 73% relative viability of a control chitosan sponge. The ejection force of thermo-paste, approximately 20 N, was lower than previously studied paste formulations and within relevant clinical ejection force ranges. An in vivo murine biocompatibility study demonstrated that thermo-paste induced minimal inflammation after implantation for 7 days, similar to previously developed chitosan pastes. Results from these preliminary preclinical studies indicate that thermo-paste shows promise for further development as an antibiotic delivery system for infection prevention.
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22
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Kamaruzzaman NF, Tan LP, Mat Yazid KA, Saeed SI, Hamdan RH, Choong SS, Wong WK, Chivu A, Gibson AJ. Targeting the Bacterial Protective Armour; Challenges and Novel Strategies in the Treatment of Microbial Biofilm. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1705. [PMID: 30217006 PMCID: PMC6164881 DOI: 10.3390/ma11091705] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/07/2018] [Accepted: 09/09/2018] [Indexed: 02/07/2023]
Abstract
Infectious disease caused by pathogenic bacteria continues to be the primary challenge to humanity. Antimicrobial resistance and microbial biofilm formation in part, lead to treatment failures. The formation of biofilms by nosocomial pathogens such as Staphylococcus aureus (S. aureus), Pseudomonas aeruginosa (P. aeruginosa), and Klebsiella pneumoniae (K. pneumoniae) on medical devices and on the surfaces of infected sites bring additional hurdles to existing therapies. In this review, we discuss the challenges encountered by conventional treatment strategies in the clinic. We also provide updates on current on-going research related to the development of novel anti-biofilm technologies. We intend for this review to provide understanding to readers on the current problem in health-care settings and propose new ideas for new intervention strategies to reduce the burden related to microbial infections.
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Affiliation(s)
- Nor Fadhilah Kamaruzzaman
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa 16100, Kelantan, Malaysia.
| | - Li Peng Tan
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa 16100, Kelantan, Malaysia.
| | - Khairun Anisa Mat Yazid
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa 16100, Kelantan, Malaysia.
| | - Shamsaldeen Ibrahim Saeed
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa 16100, Kelantan, Malaysia.
| | - Ruhil Hayati Hamdan
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa 16100, Kelantan, Malaysia.
| | - Siew Shean Choong
- Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Pengkalan Chepa 16100, Kelantan, Malaysia.
| | - Weng Kin Wong
- School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
| | - Alexandru Chivu
- UCL Centre for Nanotechnology and Regenerative Medicine, Division of Surgery & Interventional Science, University College London, London NW3 2PF, UK.
| | - Amanda Jane Gibson
- Royal Veterinary College, Pathobiology and Population Sciences, Hawkshead Lane, North Mymms, Hatfield AL9 7TA, UK.
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Shi M, Chen L, Wang Y, Yan S. Low-intensity pulsed ultrasound enhances antibiotic release of gentamicin-loaded, self-setting calcium phosphate cement. J Int Med Res 2018; 46:2803-2809. [PMID: 29921149 PMCID: PMC6124285 DOI: 10.1177/0300060518773023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective This study aimed to investigate the effect of low-intensity pulsed ultrasound on antibiotic release from gentamicin-loaded, self-setting calcium phosphate cement. Methods A gentamicin-loaded calcium phosphate cement cylinder was eluted in stimulated body fluid. Low-intensity pulsed ultrasound (46.5 kHz, 200 mW/cm2) was used to produce a sinusoidal wave in the experimental group. Non-gentamicin calcium phosphate cement was used in the control group. Results The transient concentration and cumulatively released percentage of gentamicin in the ultrasound group were higher than those in control group at every time point. The duration of gentamicin concentrations over the level of the minimum inhibitory concentration was significantly prolonged in the ultrasound group compared with the control group. Antibacterial efficacy of gentamicin in the ultrasound group was significantly better than that in the control group with the same concentration of gentamicin. Conclusion Low-intensity pulsed ultrasound enhances antibiotic release, providing sustained antibiotic release at high concentrations. This increases the antibacterial effect of gentamicin.
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Affiliation(s)
- Mingmin Shi
- 1 Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lei Chen
- 2 Department of Endocrinology and Metabolism, Sir Run Run Shaw Hospital Affiliated with the School of Medicine, Zhejiang University, Hangzhou, China
| | - Yangxin Wang
- 1 Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Shigui Yan
- 1 Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Laratta JL, Lombardi JM, Shillingford JN, Reddy HP, Gvozdyev BV, Kim YJ. Permanent implantation of antibiotic cement over exposed instrumentation eradicates deep spinal infection. JOURNAL OF SPINE SURGERY (HONG KONG) 2018; 4:471-477. [PMID: 30069547 PMCID: PMC6046320 DOI: 10.21037/jss.2018.04.03] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 04/04/2018] [Indexed: 12/26/2022]
Abstract
In this case series, we describe an infection treatment protocol involving permanent implantation of antibiotic cement that is effective in eradicating deep infection. Surgical site infection (SSI) is a devastating complication of spine surgery. Unlike the gold-standard two-stage revision in North American hip and knee arthroplasty, there exists no standardized, accepted protocol for the management of deep SSI with instrumentation. Because removal of hardware in an unstable, instrumented spine can result in serious neurologic sequelae, retention of instrumentation with elimination of bacterial colonization on implants is the goal. Using Current Procedural Terminology (CPT) codes, institutional medical records were queried to identify all posterior spinal procedures performed by the senior surgeon from 2008 through 2014. Thirty-four patients were identified as having an implant-associated SSI. Exclusion criteria included: (I) superficial SSI, and (II) those with less than 36 months of follow-up. The study population consisted of ten patients with deep implant-associated SSI who underwent our novel protocol of operative debridement and permanent coating of exposed implants with high-dose antibiotic cement. Postoperative infection presented after an average of 41.4±57.5 days (range, 6.0-207.0 days) from the index procedure. The mean follow-up was 64.4±18.1 months (range, 44.0-98.0 months). At final follow-up, none of the ten patients (0%) in our series had evidence of continued deep infection and none required removal of hardware. Ten of the ten patients (100%) were able to clear infection with a single stage debridement and coating with antibiotic cement. Only 1 of the 10 patients (10%) developed a pseudarthrosis. In conclusion, permanent implantation of antibiotic cement over exposed instrumentation is effective in preserving spinal instrumentation during infection eradication, preventing infection recurrence, and minimizing operative debridements.
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Affiliation(s)
| | - Joseph M. Lombardi
- Department of Orthopaedic Surgery, Columbia University Medical Center, The Spine Hospital at New York-Presbyterian, New York, NY, USA
| | - Jamal N. Shillingford
- Department of Orthopaedic Surgery, Columbia University Medical Center, The Spine Hospital at New York-Presbyterian, New York, NY, USA
| | - Hemant P. Reddy
- Department of Orthopaedic Surgery, Columbia University Medical Center, The Spine Hospital at New York-Presbyterian, New York, NY, USA
| | | | - Yong J. Kim
- Department of Orthopaedic Surgery, Columbia University Medical Center, The Spine Hospital at New York-Presbyterian, New York, NY, USA
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25
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Economic Evaluation of Antibacterial Coatings on Healthcare Costs in First Year Following Total Joint Arthroplasty. J Arthroplasty 2018. [PMID: 29530518 DOI: 10.1016/j.arth.2018.01.057] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Antibacterial coatings (ABCs) of implants have proven safe and effective to reduce postsurgical infection, but little is known about their possible economic impact on large-scale use. This study evaluated the point of economic balance, during the first year after surgery, and the potential overall annual healthcare cost savings of 3 different antibacterial technologies applied to joint arthroplasty: a dual-antibiotic-loaded bone cement (COPAL G + C), an antibacterial hydrogel coating (DAC), and a silver coating (Agluna). METHODS The variables included in the algorithm were average cost and number of primary joint arthroplasties; average cost per patient of the ABC; incidence of periprosthetic joint infections and expected reduction using the ABCs; average cost of infection treatment and expected number of cases. RESULTS The point of economic balance for COPAL G + C, DAC, and Agluna in the first year after surgery was reached in patient populations with an expected postsurgical infection rate of 1.5%, 2.6%, and 19.2%, respectively. If applied on a national scale, in a moderately high-risk population of patients with a 5% expected postsurgical infection rate, COPAL G + C and DAC hydrogel would provide annual direct cost savings of approximately €48,800,000 and €43,200,000 (€1220 and €1080 per patient), respectively, while the silver coating would be associated with an economic loss of approximately €136,000,000. CONCLUSION This economic evaluation shows that ABC technologies have the potential to decrease healthcare costs primarily by decreasing the incidence of surgical site infections, provided that the technology is used in the appropriate risk class of patients.
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Gessmann J, Seybold D, Ayami F, Peter E, Baecker H, Schildhauer TA, Köller M. Peripheral Blood Plasma Clot as a Local Antimicrobial Drug Delivery Matrix. Tissue Eng Part A 2018; 24:809-818. [DOI: 10.1089/ten.tea.2017.0319] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Jan Gessmann
- Department of Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
- Department of Surgical Research, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Dominik Seybold
- Department of Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
- Department of Surgical Research, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Fahim Ayami
- Department of Surgical Research, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Elvira Peter
- Department of Surgical Research, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Hinnerk Baecker
- Department of Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Thomas Armin Schildhauer
- Department of Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Manfred Köller
- Department of Surgical Research, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
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27
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Stravinskas M, Nilsson M, Horstmann P, Petersen MM, Tarasevicius S, Lidgren L. Antibiotic Containing Bone Substitute in Major Hip Surgery: A Long Term Gentamicin Elution Study. J Bone Jt Infect 2018; 3:68-72. [PMID: 29761068 PMCID: PMC5949569 DOI: 10.7150/jbji.23901] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 03/12/2018] [Indexed: 11/13/2022] Open
Abstract
Objectives: The objective is to present the antibiotic elution from a locally implanted gentamicin containing hydroxyapatite and calcium sulphate bone substitute with an extended follow up of 30 days. We also compare the pharmacokinetics of the ceramic bone substitute with a published study on gentamicin containing poly (methyl methacrylate) (PMMA) bone cement used in primary total hip arthroplasty. Methods: Gentamicin release was measured in the urine for a month and the serum for 4 days in 10 patients operated for trochanteric hip fractures and 10 patients in uncemented hip revisions. 17 patients were followed up at one year and 3 patients at 6 months. Results and Discussion: The gentamicin concentrations measured in serum were low and approximately 100 times less than in urine during the first days, indicating high local concentrations at the implant site. The elution from the biphasic bone substitute showed a stronger burst and higher gentamicin concentrations for the first week compared to that reported for PMMA used in hip arthroplasty. Also, for the bone substitute a complete gentamicin elution was obtained after 30 days, while for the PMMA cement sub-inhibitory MIC levels of gentamicin were still present in urine 60 days past surgery. No infections were detected. Conclusions: A new biphasic bone substitute containing antibiotics could potentially be used to prevent infection in patients treated for trochanteric hip fractures or uncemented hip revisions. The gentamicin elution from the bone substitute is efficient with high initial local gentamicin concentrations and complete release at 30 days.
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Affiliation(s)
| | - Malin Nilsson
- Dept of Orthopedics, Lund University Hospital, Lund, Sweden
| | - Peter Horstmann
- Dept of Orthopedics, Rigshospitalet, University of Copenhagen, Denmark
| | | | | | - Lars Lidgren
- Dept of Orthopedics, Lund University Hospital, Lund, Sweden
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28
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Markakis K, Faris AR, Sharaf H, Faris B, Rees S, Bowling FL. Local Antibiotic Delivery Systems: Current and Future Applications for Diabetic Foot Infections. INT J LOW EXTR WOUND 2018; 17:14-21. [PMID: 29458291 DOI: 10.1177/1534734618757532] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Foot infections are common among diabetic patients with peripheral neuropathy and/or peripheral arterial disease, and it can be the pivotal event leading to a minor or major amputation of the lower extremity. Treatment of diabetic foot infections, especially deep-seated ones, remains challenging, in part because impaired blood perfusion and the presence of biofilms can impair the effectiveness of systemic antibiotics. The local application of antibiotics is an emerging field in the treatment of diabetic foot infections, with demonstrable advantages. These include delivery of high concentrations of antibiotics in the affected area, limited systemic absorption, and thus negligible side effects. Biodegradable vehicles, such as calcium sulfate beads, are the prototypical system, providing a good elution profile and the ability to be impregnated with a variety of antibiotics. These have largely superseded the nonbiodegradable vehicles, but the strongest evidence available is for calcium bead implantation for osteomyelitis management. Natural polymers, such as collagen sponge, are an emerging class of delivery systems, although thus far, data on diabetic foot infections are limited. There is recent interest in the novel antimicrobial peptide pexiganan in the form of cream, which is active against most of the microorganisms isolated in diabetic foot infections. These are promising developments, but randomized trials are required to ascertain the efficacy of these systems and to define the indications for their use. Currently, the role of topical antibiotic agents in treating diabetic foot infections is limited and outside of routine practice.
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Affiliation(s)
| | | | | | - Barzo Faris
- 3 Central Manchester Foundation NHS Trust, Manchester, UK
| | | | - Frank L Bowling
- 1 Manchester Royal Infirmary, Manchester, UK.,5 University of Manchester, Manchester, UK
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29
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Reinbold J, Hierlemann T, Urich L, Uhde AK, Müller I, Weindl T, Vogel U, Schlensak C, Wendel HP, Krajewski S. Biodegradable rifampicin-releasing coating of surgical meshes for the prevention of bacterial infections. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:2753-2762. [PMID: 29075100 PMCID: PMC5609798 DOI: 10.2147/dddt.s138510] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Polypropylene mesh implants are routinely used to repair abdominal wall defects or incisional hernia. However, complications associated with mesh implantation, such as mesh-related infections, can cause serious problems and may require complete surgical removal. Hence, the aim of the present study was the development of a safe and efficient coating to reduce postoperative mesh infections. Biodegradable poly(lactide-co-glycolide acid) microspheres loaded with rifampicin as an antibacterial agent were prepared through single emulsion evaporation method. The particle size distribution (67.93±3.39 μm for rifampicin-loaded microspheres and 64.43±3.61 μm for unloaded microspheres) was measured by laser diffraction. Furthermore, the encapsulation efficiency of rifampicin (61.5%±2.58%) was detected via ultraviolet–visible (UV/Vis) spectroscopy. The drug release of rifampicin-loaded microspheres was detected by UV/Vis spectroscopy over a period of 60 days. After 60 days, 92.40%±3.54% of the encapsulated rifampicin has been continuously released. The viability of BJ fibroblasts after incubation with unloaded and rifampicin-loaded microspheres was investigated using an MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, which showed no adverse effects on the cells. Furthermore, the antibacterial impact of rifampicin-loaded microspheres and mesh implants, coated with the antibacterial microspheres, was investigated using an agar diffusion model with Staphylococcus aureus. The coated mesh implants were also tested in an in vivo mouse model of staphylococcal infection and resulted in a 100% protection against mesh implant infections or biofilm formation shown by macroscopic imaging, scanning electron microscopy, and histological examinations. This effective antibacterial mesh coating combining the benefit of a controlled drug delivery system and a potent antibacterial agent possesses the ability to significantly reduce postoperative implant infections.
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Affiliation(s)
- Jochen Reinbold
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen
| | - Teresa Hierlemann
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen
| | - Lukas Urich
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen
| | - Ann-Kristin Uhde
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen
| | - Ingrid Müller
- Department of Pharmaceutical Engineering, Albstadt-Sigmaringen University of Applied Science, Albstadt
| | | | - Ulrich Vogel
- Institute of Pathology and Neuropathology, Tübingen, Germany
| | - Christian Schlensak
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen
| | - Hans Peter Wendel
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen
| | - Stefanie Krajewski
- Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, Tübingen
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30
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ÖZEÇ İ, ŞİMŞEK S, BENLİDAYI E, Mehmet KÜRKÇÜ MKÜRKÇÜ. Trombosit Zengin Fibrin ve Rifamisinin Bir Allogreft ile Kombinasyonda Kemik Büyütme Üzerindeki Etkilerinin Tavşan Tibiasında Eşzamanlı İmplant Yerleştirmesiyle Histomorfometrik Olarak Değerlendirilmesi. CUMHURIYET DENTAL JOURNAL 2017. [DOI: 10.7126/cumudj.307301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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31
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Ciofu O, Rojo-Molinero E, Macià MD, Oliver A. Antibiotic treatment of biofilm infections. APMIS 2017; 125:304-319. [PMID: 28407419 DOI: 10.1111/apm.12673] [Citation(s) in RCA: 244] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Accepted: 01/10/2017] [Indexed: 12/24/2022]
Abstract
Bacterial biofilms are associated with a wide range of infections, from those related to exogenous devices, such as catheters or prosthetic joints, to chronic tissue infections such as those occurring in the lungs of cystic fibrosis patients. Biofilms are recalcitrant to antibiotic treatment due to multiple tolerance mechanisms (phenotypic resistance). This causes persistence of biofilm infections in spite of antibiotic exposure which predisposes to antibiotic resistance development (genetic resistance). Understanding the interplay between phenotypic and genetic resistance mechanisms acting on biofilms, as well as appreciating the diversity of environmental conditions of biofilm infections which influence the effect of antibiotics are required in order to optimize the antibiotic treatment of biofilm infections. Here, we review the current knowledge on phenotypic and genetic resistance in biofilms and describe the potential strategies for the antibiotic treatment of biofilm infections. Of note is the optimization of PK/PD parameters in biofilms, high-dose topical treatments, combined and sequential/alternate therapies or the use antibiotic adjuvants.
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Affiliation(s)
- Oana Ciofu
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, Costerton Biofilm Center, University of Copenhagen, Copenhagen, Denmark
| | - Estrella Rojo-Molinero
- Servicio de Microbiología, Hospital Son Espases, Instituto de Investigación Sanitaria de Palma (IdISPa), Palma de Mallorca, Spain
| | - María D Macià
- Servicio de Microbiología, Hospital Son Espases, Instituto de Investigación Sanitaria de Palma (IdISPa), Palma de Mallorca, Spain
| | - Antonio Oliver
- Servicio de Microbiología, Hospital Son Espases, Instituto de Investigación Sanitaria de Palma (IdISPa), Palma de Mallorca, Spain
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32
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Howlin RP, Winnard C, Angus EM, Frapwell CJ, Webb JS, Cooper JJ, Aiken SS, Bishop JY, Stoodley P. Prevention of Propionibacterium acnes biofilm formation in prosthetic infections in vitro. J Shoulder Elbow Surg 2017; 26:553-563. [PMID: 27989720 DOI: 10.1016/j.jse.2016.09.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/09/2016] [Accepted: 09/27/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND The role of Propionibacterium acnes in shoulder arthroplasty and broadly in orthopedic prosthetic infections has historically been underestimated, with biofilm formation identified as a key virulence factor attributed to invasive isolates. With an often indolent clinical course, P acnes infection can be difficult to detect and treat. This study investigates absorbable cements loaded with a broad-spectrum antibiotic combination as an effective preventive strategy to combat P acnes biofilms. METHODS P acnes biofilm formation on an unloaded synthetic calcium sulfate (CaSO4) bone void filler cement bead was evaluated by scanning electron microscopy over a period of 14 days. Beads loaded with tobramycin alone or vancomycin alone (as comparative controls) and beads loaded with a vancomycin-tobramycin dual treatment were assessed for their ability to eradicate planktonic P acnes, prevent biofilm formation, and eradicate preformed biofilms using a combination of viable-cell counts, confocal microscopy, and scanning electron microscopy. RESULTS P acnes surface colonization and biofilm formation on unloaded CaSO4 beads was slow. Beads loaded with antibiotics were able to kill planktonic cultures of 106 colony-forming units/mL, prevent bacterial colonization, and significantly reduce biofilm formation over periods of weeks. Complete eradication of established biofilms was achieved with a contact time of 1 week. CONCLUSIONS This study demonstrates that antibiotic-loaded CaSO4 beads may represent an effective antibacterial and antibiofilm strategy to combat prosthetic infections in which P acnes is involved.
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Affiliation(s)
- Robert P Howlin
- Southampton National Institute for Health Research Respiratory Biomedical Research Unit, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton General Hospital, Southampton, UK; Centre for Biological Sciences, Faculty of Natural and Environmental Sciences and Institute for Life Sciences, University of Southampton, Southampton, UK.
| | - Christopher Winnard
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences and Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Elizabeth M Angus
- Biomedical Imaging Unit, Southampton General Hospital, Southampton, UK
| | - Connor J Frapwell
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences and Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Jeremy S Webb
- Southampton National Institute for Health Research Respiratory Biomedical Research Unit, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton General Hospital, Southampton, UK; Centre for Biological Sciences, Faculty of Natural and Environmental Sciences and Institute for Life Sciences, University of Southampton, Southampton, UK
| | | | | | - Julie Y Bishop
- Department of Orthopaedics, Ohio State University Sports Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Paul Stoodley
- Southampton National Institute for Health Research Respiratory Biomedical Research Unit, University of Southampton and University Hospital Southampton National Health Service Foundation Trust, Southampton General Hospital, Southampton, UK; National Centre for Advanced Tribology, Faculty of Engineering and Institute for Life Sciences, University of Southampton, Southampton, UK; Department of Microbial Infection and Immunity, Center for Microbial Interface Biology, The Ohio State University, Columbus, OH, USA; Department of Orthopaedics, The Ohio State University, Columbus, OH, USA
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33
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Gupta N, Banerjee S, Timitrov, Sharma R, Roy SG, Shende TM, Ansari MT, Singh G, Nischal N, Wig N, Soneja M. Osteomyelitis due to multiple rare infections in a patient with idiopathic CD4 lymphocytopenia. Intractable Rare Dis Res 2017; 6:206-210. [PMID: 28944144 DOI: 10.5582/irdr.2017.01029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
A 26-year-old male patient presented with features suggestive of osteomyelitis involving the entire left femur, hip joint and knee joint. Culture from the debrided tissue grew Acinetobacter spp. and he was treated with sensitivity based antibiotics but the symptoms did not resolve. The synovial biopsy showed multinucleated giant cells and acid fast bacilli on Ziehl Neelsen stain. Cartridge based nucleic acid amplification test (GeneXpert) was negative. The Mycobacteria growth indicator tube culture was found to be positive for Mycobacterium abscessus. The patient was started on imipenem, amikacin and macrolide based therapy. There was partial response initially but the patient worsened again. A girdle stone arthroplasty with cemented nail (with tobramycin) insertion after debridement of the infected tissue was done. Potassium hydroxide (KOH) mount from the debridement sample was found to be positive for aseptate hyphae suggestive of mucormycosis. He was treated with liposomal amphotericin B. He was evaluated for immunodeficiency in view of multiple atypical infections and was found to have a low CD4 count. The patient was discharged on amikacin, azithromycin, trimethoprim-sulfamethoxazole and posaconazole. Follow up showed considerable resolution both clinically and radiologically. To our knowledge, this is the first reported case of osteomyelitis with co-infection of Acinetobacter spp., M. abscessus and mucormycetes. We report this case to highlight the possibility of multiple rare infections in patients with immunodeficiency. Also, atypical complicated bone infections, such as Mycobacterium abscessus and mucormycetes might require combined medical and surgical treatment.
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Affiliation(s)
- Nitin Gupta
- Infectious Disease Division, Departments of Medicine and Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sayantan Banerjee
- Infectious Disease Division, Departments of Medicine and Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Timitrov
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Rohini Sharma
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Shambo Guha Roy
- Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Trupti M Shende
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Mohammed Tahir Ansari
- Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India
| | - Gagandeep Singh
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Neeraj Nischal
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Naveet Wig
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Manish Soneja
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
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34
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Watson E, Tatara AM, Kontoyiannis DP, Mikos AG. Inherently Antimicrobial Biodegradable Polymers in Tissue Engineering. ACS Biomater Sci Eng 2016; 3:1207-1220. [PMID: 33440510 DOI: 10.1021/acsbiomaterials.6b00501] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Many of the strategies currently being explored in the field of tissue engineering involve the combination of cells and degradable engineered scaffolds for the regeneration of biological tissues. However, infection of the wound or the scaffold itself results in failure of healing. Therefore, a new area of development in the field is the synthesis of polymer-based scaffolds that inherently have the ability to resist microbial infection as degradation occurs and new tissue replaces the scaffold. These scaffolds, defined as inherently antimicrobial biodegradable polymers (IABPs), can be classified based on their monomeric components as follows: (1) traditional antimicrobials (such as beta-lactams, fluoroquinolones, glycopeptides, and aminoglycosides), (2) naturally derived compounds (such as extracellular matrix components, chitosan, and antimicrobial peptides), and (3) novel synthetic antimicrobials. After validation of chemical synthesis as well as physicochemical characterization of a newly created IABP, thorough in vitro and in vivo assays must be conducted to ensure antimicrobial efficacy as well as biocompatibility as a tissue-engineered scaffold system. In this review, we will introduce existing IABPs, discuss the current platforms that have been developed for the synthesis of IABPs, and highlight future directions as well as challenges in the field.
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Affiliation(s)
- Emma Watson
- Department of Bioengineering, Rice University, Houston, Texas 77005, Unites States.,Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Alexander M Tatara
- Department of Bioengineering, Rice University, Houston, Texas 77005, Unites States.,Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Dimitrios P Kontoyiannis
- Department of Infectious Diseases, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, United States
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, Texas 77005, Unites States.,Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, Unites States
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35
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Stravinskas M, Horstmann P, Ferguson J, Hettwer W, Nilsson M, Tarasevicius S, Petersen MM, McNally MA, Lidgren L. Pharmacokinetics of gentamicin eluted from a regenerating bone graft substitute: In vitro and clinical release studies. Bone Joint Res 2016; 5:427-35. [PMID: 27678329 PMCID: PMC5047051 DOI: 10.1302/2046-3758.59.bjr-2016-0108.r1] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 08/02/2016] [Indexed: 12/18/2022] Open
Abstract
Objectives Deep bone and joint infections (DBJI) are directly intertwined with health, demographic change towards an elderly population, and wellbeing. The elderly human population is more prone to acquire infections, and the consequences such as pain, reduced quality of life, morbidity, absence from work and premature retirement due to disability place significant burdens on already strained healthcare systems and societal budgets. DBJIs are less responsive to systemic antibiotics because of poor vascular perfusion in necrotic bone, large bone defects and persistent biofilm-based infection. Emerging bacterial resistance poses a major threat and new innovative treatment modalities are urgently needed to curb its current trajectory. Materials and Methods We present a new biphasic ceramic bone substitute consisting of hydroxyapatite and calcium sulphate for local antibiotic delivery in combination with bone regeneration. Gentamicin release was measured in four setups: 1) in vitro elution in Ringer’s solution; 2) local elution in patients treated for trochanteric hip fractures or uncemented hip revisions; 3) local elution in patients treated with a bone tumour resection; and 4) local elution in patients treated surgically for chronic corticomedullary osteomyelitis. Results The release pattern in vitro was comparable with the obtained release in the patient studies. No recurrence was detected in the osteomyelitis group at latest follow-up (minimum 1.5 years). Conclusions This new biphasic bone substitute containing antibiotics provides safe prevention of bone infections in a range of clinical situations. The in vitro test method predicts the in vivo performance and makes it a reliable tool in the development of future antibiotic-eluting bone-regenerating materials. Cite this article: M. Stravinskas, P. Horstmann, J. Ferguson, W. Hettwer, M. Nilsson, S. Tarasevicius, M. M. Petersen, M. A. McNally, L. Lidgren. Pharmacokinetics of gentamicin eluted from a regenerating bone graft substitute: In vitro and clinical release studies. Bone Joint Res 2016;5:427–435. DOI: 10.1302/2046-3758.59.BJR-2016-0108.R1.
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Affiliation(s)
- M Stravinskas
- Orthopaedic Surgeon, Lithuanian University of Health, Eivenių str. 2, LT-50009 Kaunas, Lithuania
| | - P Horstmann
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen, Denmark
| | - J Ferguson
- The Bone Infection Unit, Nuffield Orthopedic Centre, Oxford University Hospitals, Windmill Road, Headington, Oxford OX3 7HE, UK
| | - W Hettwer
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen, Denmark
| | - M Nilsson
- Department of Orthopedics, Lund University Hospital, SE-221 85 Lund, Sweden
| | - S Tarasevicius
- Orthopaedic Surgeon, Lithuanian University of Health, Eivenių str. 2, LT-50009 Kaunas, Lithuania
| | - M M Petersen
- Musculoskeletal Tumor Section, Department of Orthopedic Surgery, Rigshospitalet, University of Copenhagen, 2100 Copenhagen, Denmark
| | - M A McNally
- The Bone Infection Unit, Nuffield Orthopedic Centre, Oxford University Hospitals, Windmill Road, Headington, Oxford OX3 7HE, UK
| | - L Lidgren
- Department of Orthopedics, Lund University Hospital, SE-221 85 Lund, Sweden
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36
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Histomorphometric Evaluation of Bone Formation in Peri-Implant Defects Treated With Different Regeneration Techniques: An Experimental Study in a Rabbit Model. J Oral Maxillofac Surg 2016; 74:1757-64. [DOI: 10.1016/j.joms.2016.05.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 05/13/2016] [Accepted: 05/25/2016] [Indexed: 11/18/2022]
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