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biofilm in surgical site infections

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https://www.readbyqxmd.com/read/29587128/direct-analysis-of-pathogenic-structures-affixed-to-the-tympanic-membrane-during-chronic-otitis-media
#1
Guillermo L Monroy, Wenzhou Hong, Pawjai Khampang, Ryan G Porter, Michael A Novak, Darold R Spillman, Ronit Barkalifa, Eric J Chaney, Joseph E Kerschner, Stephen A Boppart
Objective To characterize otitis media-associated structures affixed to the mucosal surface of the tympanic membrane (TM) in vivo and in surgically recovered in vitro samples. Study Design Prospective case series without comparison. Setting Outpatient surgical care center. Subjects and Methods Forty pediatric subjects scheduled for tympanostomy tube placement surgery were imaged intraoperatively under general anesthesia. Postmyringotomy, a portable optical coherence tomography (OCT) imaging system assessed for the presence of any biofilm affixed to the mucosal surface of the TM...
March 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29556679/-infections-after-reconstructive-spinal-interventions-how-do-i-deal-with-them
#2
REVIEW
Burkhard Lehner, Michael Akbar, Nicholas A Beckmann
BASICS: Postoperative surgical site infections of the spine have been described in up to 20% of patients and can result in serious consequences for the patient and substantial treatment costs. Typical bacteria often arise from skin or fecal flora. Various risk factors for infection have been described, including obesity, diabetes, high ASA scores, as well as intraoperative factors such as heavy blood loss, dural tears, or several revision procedures. Consequently, the prophylaxis with pre- and postoperative risk minimization is of particular importance...
March 20, 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29498369/-abscesses-in-the-lumbo-sacral-spine-area-a-case-report
#3
Alicja Baranowska, Paweł Baranowski, Tadeusz Płusa
Infection of the surgical operation site is found in approximately 3% of patients and 20% of patients undergoing urgent surgery. The occurrence of this type of complications is affected both by coexisting diseases and the presence of infection in the environment in which the patient is staying. It should also be taken into account that the bacteria found in the implanted material and surrounding tissues have the ability to adhere to the implant, creating a biofilm structure there. The presented patient is an illustration of such a problem, because after L5 laminectomy and extensive L2-L3 and L3-L4 one-sided fenestration and L2-L3-L4-L5 facetectomy, interbody bone arthrodesis and transpedicular stabilization, he reported for fever and pain in right lumbar area...
February 23, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29443852/chlorhexidine-antiseptic-irrigation-eradicates-staphylococcus-epidermidis-from-biofilm-an-in-vitro-study
#4
Kenneth Schmidt, Chris Estes, Alex McLaren, Mark J Spangehl
BACKGROUND: Antiseptic and antibacterial solutions used for intraoperative irrigation are intended to kill bacteria and thereby decrease the incidence of surgical site infections. It is unknown if the concentrations and exposure times of irrigation solutions commonly used for prophylaxis in clean cases (povidone-iodine 0.35% for 3 minutes) are effective against bacteria in biofilm that are present in implant infections. Currently, povidone-iodine (0.35%), chlorhexidine (0.05%), sodium hypochlorite (0...
March 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29401093/intraoperative-vancomycin-powder-reduces-staphylococcus-aureus-surgical-site-infections-and-biofilm-formation-on-fixation-implants-in-a-rabbit-model
#5
James Paul Hovis, Ryan Montalvo, Dimitrius Marinos, Manjari Joshi, Mark Shirtliff, Theodore T Manson, Robert V O'Toole
OBJECTIVES: To evaluate the effectiveness of intraoperative vancomycin powder in prevention of surgical site infection and biofilm formation on implants in a contaminated animal fixation model. METHODS: We created a rabbit surgical model including fixation implants at a tibial surgical site seeded with methicillin-resistant Staphylococcus aureus. Our study cohort included 18 rabbits. Nine received vancomycin powder at the surgical site, and the other 9 did not. Serum vancomycin levels were measured at scheduled time points over 24 hours...
January 30, 2018: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29341933/the-effects-of-platelet-lysate-patches-on-the-activity-of-tendon-derived-cells
#6
Raquel Costa-Almeida, Albina R Franco, Tamagno Pesqueira, Mariana B Oliveira, Pedro S Babo, Isabel B Leonor, João F Mano, Rui L Reis, Manuela E Gomes
Platelet-derived biomaterials are widely explored as cost-effective sources of therapeutic factors, holding a strong potential for endogenous regenerative medicine. Particularly for tendon repair, treatment approaches that shift the injury environment are explored to accelerate tendon regeneration. Herein, genipin-crosslinked platelet lysate (PL) patches are proposed for the delivery of human-derived therapeutic factors in patch augmentation strategies aiming at tendon repair. Developed PL patches exhibited a controlled release profile of PL proteins, including bFGF and PDGF-BB...
January 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29315313/viable-adhered-staphylococcus-aureus-highly-reduced-on-novel-antimicrobial-sutures-using-chlorhexidine-and-octenidine-to-avoid-surgical-site-infection-ssi
#7
Andreas Obermeier, Jochen Schneider, Norbert Harrasser, Jutta Tübel, Heinrich Mühlhofer, Dominik Pförringer, Constantin von Deimling, Peter Foehr, Barbara Kiefel, Christina Krämer, Axel Stemberger, Matthias Schieker, Rainer Burgkart, Rüdiger von Eisenhart-Rothe
BACKGROUND: Surgical sutures can promote migration of bacteria and thus start infections. Antiseptic coating of sutures may inhibit proliferation of adhered bacteria and avoid such complications. OBJECTIVES: This study investigated the inhibition of viable adhering bacteria on novel antimicrobially coated surgical sutures using chlorhexidine or octenidine, a critical factor for proliferation at the onset of local infections. The medical need, a rapid eradication of bacteria in wounds, can be fulfilled by a high antimicrobial efficacy during the first days after wound closure...
2018: PloS One
https://www.readbyqxmd.com/read/29238713/sodium-mercaptoethane-sulfonate-reduces-collagenolytic-degradation-and-synergistically-enhances-antimicrobial-durability-in-an-antibiotic-loaded-biopolymer-film-for-prevention-of-surgical-site-infections
#8
Joel Rosenblatt, Ruth A Reitzel, George M Viola, Nylev Vargas-Cruz, Jesse Selber, Issam Raad
Implant-associated surgical-site infections can have significant clinical consequences. Previously we reported a method for prophylactically disinfecting implant surfaces in surgical pockets, where an antibiotic solution containing minocycline (M) and rifampin (R) was applied as a solid film in a crosslinked biopolymer matrix that partially liquefied in situ to provide extended prophylaxis. Here we studied the effect of adding sodium 2-mercaptoethane sulfonate (MeSNA) on durability of prophylaxis in an in vitro model of implant-associated surgical-site infection...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29191009/prediction-of-broad-spectrum-pathogen-attachment-to-coating-materials-for-biomedical-devices
#9
Paulius Mikulskis, Andrew Hook, Adam A Dundas, Derek Irvine, Olutoba Sanni, Daniel Anderson, Robert Langer, Morgan R Alexander, Paul Williams, David A Winkler
Bacterial infections in healthcare settings are a frequent accompaniment to both routine procedures such as catheterization and surgical site interventions. Their impact is becoming even more marked as the numbers of medical devices that are used to manage chronic health conditions and improve quality of life increases. The resistance of pathogens to multiple antibiotics is also increasing, adding an additional layer of complexity to the problems of employing safe and effective medical procedures. One approach to reducing the rate of infections associated with implanted and indwelling medical devices is the use of polymers that resist the formation of bacterial biofilms...
January 10, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29125405/cutibacterium-formerly-propionibacterium-acnes-infections-associated-with-implantable-devices
#10
Amal A Gharamti, Zeina A Kanafani
Cutibacterium acnes (C. acnes), a Gram-positive biofilm-forming rod implicated in acne vulgaris, is increasingly recognized for its role in implant-associated infections. The diagnosis of C. acnes implant-associated infections remains challenging. The optimal treatment is a combination of both surgical intervention and antibiotic therapy. Areas covered: In this review, we discuss the different types of implant-associated infections caused by C. acnes. We also highlight the clinical manifestations pertaining to the various sites of infection, and identify several risk factors previously reported in the literature...
December 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29033574/surgical-site-infections-following-instrumented-stabilization-of-the-spine
#11
Ulrike Dapunt, Caroline Bürkle, Frank Günther, Wojciech Pepke, Stefan Hemmer, Michael Akbar
BACKGROUND: Implant-associated infections are still a feared complication in the field of orthopedics. Bacteria attach to the implant surface and form so-called biofilm colonies that are often difficult to diagnose and treat. Since the majority of studies focus on prosthetic joint infections (PJIs) of the hip and knee, current treatment options (eg, antibiotic prophylaxis) of implant-associated infections have mostly been adapted according to these results. OBJECTIVE: The aim of this study was to evaluate patients with surgical site infections following instrumented stabilization of the spine with regard to detected bacteria species and the course of the disease...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28971093/antimicrobial-peptides-in-biomedical-device-manufacturing
#12
REVIEW
Martijn Riool, Anna de Breij, Jan W Drijfhout, Peter H Nibbering, Sebastian A J Zaat
Over the past decades the use of medical devices, such as catheters, artificial heart valves, prosthetic joints, and other implants, has grown significantly. Despite continuous improvements in device design, surgical procedures, and wound care, biomaterial-associated infections (BAI) are still a major problem in modern medicine. Conventional antibiotic treatment often fails due to the low levels of antibiotic at the site of infection. The presence of biofilms on the biomaterial and/or the multidrug-resistant phenotype of the bacteria further impair the efficacy of antibiotic treatment...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28926192/testing-of-a-bioactive-moldable-bone-graft-substitute-in-an-infected-critically-sized-segmental-defect-model
#13
Matt E Brown, Yuan Zou, Rebecca Peyyala, Sarandeep S Huja, Larry L Cunningham, Todd A Milbrandt, Thomas D Dziubla, David A Puleo
Large infected bone defects, often resulting from high energy traumas, are difficult to treat due to their variability in complexity and location. Standard treatment for infected bone defects begins with a protocol that includes a series of debridements in conjunction with an extended course of systemic antibiotics. Only after the infection has been eliminated will repair of the defect commence, typically with implantation of autologous bone. To address some of the shortcomings of the standard treatment methods, such as serial procedures, limited grafting material, and the need for a second surgical site for autologous bone, a sequential, dual drug-releasing, moldable, calcium sulfate-based bone graft substitute was developed previously...
September 19, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28925959/preventing-surgical-site-infections-using-a-natural-biodegradable-antibacterial-coating-on-surgical-sutures
#14
Jochen Reinbold, Ann-Kristin Uhde, Ingrid Müller, Tobias Weindl, Jürgen Geis-Gerstorfer, Christian Schlensak, Hans-Peter Wendel, Stefanie Krajewski
Surgical site infections (SSIs) are one of the most common nosocomial infections, which can result in serious complications after surgical interventions. Foreign materials such as implants or surgical sutures are optimal surfaces for the adherence of bacteria and subsequent colonization and biofilm formation. Due to a significant increase in antibiotic-resistant bacterial strains, naturally occurring agents exhibiting antibacterial properties have great potential in prophylactic therapies. The aim of this study was to develop a coating for surgical sutures consisting of the antibacterial substance totarol, a naturally occurring diterpenoid isolated from Podocarpustotara in combination with poly(lactide-co-glycolide acid) (PLGA) as a biodegradable drug delivery system...
September 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28842537/molecular-determinants-of-the-thickened-matrix-in-a-dual-species-pseudomonas-aeruginosa-and-enterococcus-faecalis-biofilm
#15
Keehoon Lee, Kang-Mu Lee, Donggeun Kim, Sang Sun Yoon
Biofilms are microbial communities that inhabit various surfaces and are surrounded by extracellular matrices (ECMs). Clinical microbiologists have shown that the majority of chronic infections are caused by biofilms, following the introduction of the first biofilm infection model by J. W. Costerton and colleagues (J. Lam, R. Chan, K. Lam, and J. W. Costerton, Infect Immun 28:546-556, 1980). However, treatments for chronic biofilm infections are still limited to surgical removal of the infected sites. Pseudomonas aeruginosa and Enterococcus faecalis are two frequently identified bacterial species in biofilm infections; nevertheless, the interactions between these two species, especially during biofilm growth, are not clearly understood...
November 1, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28839395/staphylococcus-lugdunensis-and-trichophyton-tonsurans-infection-in-synthetic-hair-implants
#16
Pedro Colli, Antonia Fellas, Ralph M Trüeb
Synthetic hair implants are considered in alopecia when the patient requests an immediate result with minor surgery and with a poor donor area. However, the procedure has historically been marred by poor quality fiber and performance resulting in serious complications. Nevertheless, companies continue to market the procedure with the claim that previous problems have been sorted out. We report a case of inflammation in synthetic hair implants, in which microbiological studies revealed infection with Staphylococcus lugdunensis and Trichophyton tonsurans...
April 2017: International Journal of Trichology
https://www.readbyqxmd.com/read/28717409/influence-of-the-microstructure-and-silver-content-on-degradation-cytocompatibility-and-antibacterial-properties-of-magnesium-silver-alloys-in-vitro
#17
Zhidan Liu, Ronald Schade, Bérengère Luthringer, Norbert Hort, Holger Rothe, Sören Müller, Klaus Liefeith, Regine Willumeit-Römer, Frank Feyerabend
Implantation is a frequent procedure in orthopedic surgery, particularly in the aging population. However, it possesses the risk of infection and biofilm formation at the surgical site. This can cause unnecessary suffering to patients and burden on the healthcare system. Pure Mg, as a promising metal for biodegradable orthopedic implants, exhibits some antibacterial effects due to the alkaline pH produced during degradation. However, this antibacterial effect may not be sufficient in a dynamic environment, for example, the human body...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28712173/surgical-site-infection-in-orthopaedic-implants-and-its-common-bacteria-with-their-sensitivities-to-antibiotics-in-open-reduction-internal-fixation
#18
Muhammad Qaisar Shah, Muhammad Shoib Zardad, Alamzeb Khan, Sajjad Ahmed, Abdus Saboor Awan, Taj Mohammad
BACKGROUND: Surgical site infection in orthopaedic implants is a major problem, causing long hospital stay, cost to the patient and is a burden on health care facilities. It increases rate of nonunion, osteomyelitis, implant failure, sepsis, multiorgan dysfunction and even death. Surgical site infection is defined as pain, erythema, swelling and discharge from wound site. Surgical site infection in orthopaedic implants is more challenging to the treating orthopaedic surgeon as the causative organism is protected by a biofilm over the implant's surface...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28709485/biofilm-colonization-of-mycobacterium-abscessus-new-threat-in-hospital-acquired-surgical-site-infection
#19
Roumi Ghosh, Soumen Das, Harish Kela, Asmita De, Jayeeta Haldar, Prasanta Kumar Maiti
INTRODUCTION: Rapidly growing non-tuberculous mycobacteria (NTM) are hazardous cause of post-operative soft tissue infection leading to nosocomial outbreaks following various surgical procedures, especially laparoscopic surgeries using heat sensitive, non-autoclavable surgical instruments. METHODOLOGY: Surgery department of our hospital noticed increase in rate of post-laparoscopic abdominal port site infection (PSI) and informed the Microbiology Department. A prospective investigational study of defined cases with the aim of source tracing and formulation of infection control measures was initiated...
July 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28686044/anti-biofilm-properties-of-a-mupirocin-spray-formulation-against-escherichia-coli-wound-infections
#20
Dhamodharan Bakkiyaraj, Rutthapol Sritharadol, Alwar Ramanujam Padmavathi, Titpawan Nakpheng, Teerapol Srichana
Mupirocin ointment is a widely used topical drug for the treatment of bacterial skin infections. However, ointments have some limitations which motivated the development of a film forming spray of mupirocin. Mupirocin spray (2%) was formulated with Eudragit E100 as a film forming agent and tested for its antibacterial and anti-biofilm activities against Escherichia coli, a skin pathogen causing wound and surgical site infections. Treatment with mupirocin spray resulted in significant antibacterial and anti-biofilm activities (inhibition and disruption) with single spray and sub-actual dose concentrations at par with the commercial ointment concentration...
August 2017: Biofouling
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