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https://www.readbyqxmd.com/read/29443819/chronic-osteomyelitis-with-staphylococcus-aureus-deformation-in-submicron-canaliculi-of-osteocytes-a-case-report
#1
Karen L de Mesy Bentley, Ashlee MacDonald, Edward M Schwarz, Irvin Oh
CASE: A patient presenting with an infected diabetic foot ulcer and Staphylococcus aureus chronic osteomyelitis was studied to validate the clinical importance of bacterial colonization of osteocytic-canalicular networks, as we recently reported in a mouse model. We utilized transmission electron microscopy to describe the deformation of S. aureus, from round cocci to rod-shaped bacteria, in the submicron osteocytic-canalicular networks of amputated bone tissue. CONCLUSION: To our knowledge, this is the first evidence of S...
February 14, 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29424287/calcium-alginate-based-antimicrobial-film-dressings-for-potential-healing-of-infected-foot-ulcers
#2
Asif Ahmed, Joshua Boateng
AIM: Diabetic foot ulcers are susceptible to infection and nonmedicated dressings are ineffective because they have no antimicrobial activity. This study aimed to develop antimicrobial films to deliver ciprofloxacin for treating bacterial infection. Results/methodology: Ciprofloxacin-loaded calcium alginate films were characterized for porosity, swelling, equilibrium water content, water absorption, water vapor transmission, evaporative water loss, moisture content, mechanical strength, adhesion, IR spectroscopy, scanning electron microscopy, x-ray diffraction, drug release, cytotoxicity and antimicrobial activity against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa...
February 1, 2018: Therapeutic Delivery
https://www.readbyqxmd.com/read/29391370/codifi-concordance-in-diabetic-foot-ulcer-infection-a-cross-sectional-study-of-wound-swab-versus-tissue-sampling-in-infected-diabetic-foot-ulcers-in-england
#3
Andrea Nelson, Alexandra Wright-Hughes, Michael Ross Backhouse, Benjamin A Lipsky, Jane Nixon, Moninder S Bhogal, Catherine Reynolds, Sarah Brown
OBJECTIVE: To determine the extent of agreement and patterns of disagreement between wound swab and tissue samples in patients with an infected diabetic foot ulcer (DFU). DESIGN: Multicentre, prospective, cross-sectional study. SETTING: Primary and secondary care foot ulcer/diabetic outpatient clinics and hospital wards across England. PARTICIPANTS: Inclusion criteria: consenting patients aged ≥18 years; diabetes mellitus; suspected infected DFU...
January 31, 2018: BMJ Open
https://www.readbyqxmd.com/read/29380676/the-current-role-of-glycopeptides-in-the-treatment-of-methicillin-resistant-staphylococcus-aureus-mrsa-infections-in-not-neutropenic-adults-the-viewpoint-of-a-group-of-italian-experts
#4
Ercole Concia, Claudio Viscoli, Valerio Del Bono, Maddalena Giannella, Matteo Bassetti, Giuseppe Francesco De Rosa, Emanuele Durante Mangoni, Silvano Esposito, Massimo Giusti, Paolo Grossi, Francesco Menichetti, Federico Pea, Nicola Petrosillo, Mario Tumbarello, Stefania Stefani, Mario Venditti, Pierluigi Viale
Staphylococcus aureus is still an important problem in clinical and therapeutic area, worldwide. In Italy, in recent years, methicillin resistance remained stable, yet considerably high, the percentage of strains of MRSA being around 40%. It was deemed interesting and timely to carry out a consensus conference using the RAND/UCLA method to collect the opinion of a group of experts in infectious diseases on the role of glycopeptides in the management of MRSA infections within several clinical scenarios and namely in pneumonia, bacteremia and endocarditis, joint replacement infections, skin and soft tissue infections, diabetic foot, abdominal infections and central nervous system infections...
January 30, 2018: Journal of Chemotherapy
https://www.readbyqxmd.com/read/29316701/the-effect-of-cryopreserved-human-placental-tissues-on-biofilm-formation-of-wound-associated-pathogens
#5
Yong Mao, Anya Singh-Varma, Tyler Hoffman, Sandeep Dhall, Alla Danilkovitch, Joachim Kohn
Biofilm, a community of bacteria, is tolerant to antimicrobial agents and ubiquitous in chronic wounds. In a chronic DFU (Diabetic Foot Ulcers) clinical trial, the use of a human cryopreserved viable amniotic membrane (CVAM) resulted in a high rate of wound closure and reduction of wound-related infections. Our previous study demonstrated that CVAM possesses intrinsic antimicrobial activity against a spectrum of wound-associated bacteria under planktonic culture conditions. In this study, we evaluated the effect of CVAM and cryopreserved viable umbilical tissue (CVUT) on biofilm formation of S...
January 8, 2018: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29311091/neutralizing-%C3%AE-toxin-accelerates-healing-of-staphylococcus-aureus-infected-wounds-in-normal-and-diabetic-mice
#6
Roger V Ortines, Haiyun Liu, Lily I Cheng, Taylor S Cohen, Heather Lawlor, Abhishek Gami, Yu Wang, Carly A Dillen, Nathan K Archer, Robert J Miller, Alyssa G Ashbaugh, Bret L Pinsker, Mark C Marchitto, Christine Tkaczyk, C Kendall Stover, Bret R Sellman, Lloyd S Miller
Staphylococcus aureus wound infections delay healing and result in invasive complications such as osteomyelitis, especially in the setting of diabetic foot ulcers. In preclinical animal models of S. aureus skin infection, antibody neutralization of α-toxin (AT), a S. aureus secreted pore-forming cytolytic toxin, reduces disease severity by inhibiting skin necrosis and restoring effective host immune responses. However, whether therapeutic neutralization of α-toxin is effective against S. aureus-infected wounds is unclear...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29277539/skin-wound-healing-is-accelerated-by-a-lipid-mixture-representing-major-lipid-components-of-chamaecyparis-obtusa-plant-extract
#7
Byung Eui Kim, Elena Goleva, Clifton F Hall, Sang Hyun Park, Un Ha Lee, Anne M Brauweiler, Joanne E Streib, Brittany N Richers, Gwuicheol Kim, Donald Y M Leung
In chronic non-healing wounds, the healing process is disrupted and wounds are often infected with bacteria. About 85% of lower extremity amputations in diabetes are attributed to deep infection of foot ulcers. Therefore, infection control is critical for wound care. In this study, we analyzed lipid composition of Chamaecyparis (C) obtusa extract, and describe the wound healing properties of its combination of ten major lipid components. A 10 lipid mixture upregulated HBD-3 and LL-37 through the olfactory receptor 2AT4, and induced phosphorylation of extracellular signal-regulated kinases and p38 mitogen-activated protein kinases in primary human keratinocytes...
December 22, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29273315/staphylococcus-aureus-triggers-induction-of-mir-15b-5p-to-diminish-dna-repair-and-de-regulate-inflammatory-response-in-diabetic-foot-ulcers
#8
Horacio A Ramirez, Irena Pastar, Ivan Jozic, Olivera Stojadinovic, Rivka C Stone, Nkemcho Ojeh, Joel Gil, Stephen C Davis, Robert S Kirsner, Marjana Tomic-Canic
Diabetic foot ulcers (DFUs) are a debilitating complication of diabetes in which bacterial presence, including its frequent colonizer Staphylococcus aureus, contribute to inhibition of healing. MicroRNAs (miRs) play a role in healing and host response to bacterial pathogens. However, the mechanisms by which miR response to cutaneous S. aureus contributes to DFU pathophysiology are unknown. Herein we show S. aureus inhibits wound closure and induces miR-15b-5p in acute human and porcine wound models, and in chronic DFUs...
December 19, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29231774/modern-management-of-diabetic-foot-osteomyelitis-the-when-how-and-why-of-conservative-approaches
#9
Javier Aragón-Sánchez, Benjamin A Lipsky
Diabetic foot osteomyelitis (DFO) has long been considered a complex infection that is both difficult to diagnose and treat, and is associated with a high rate of relapse and limb loss. Areas covered: DFO can usually be diagnosed by a combination of clinical evaluation, serum inflammatory markers and plain X-ray. When the results of these procedures are negative or contradictory, advanced imaging tests or bone biopsy may be necessary. Staphylococcus aureus remains the most frequent microorganism isolated from bone specimens, but infection is often polymicrobial...
January 2018: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29165561/evaluation-of-short-exposure-times-of-antimicrobial-wound-solutions-against-microbial-biofilms-from-in-vitro-to-in-vivo
#10
K Johani, M Malone, S O Jensen, H G Dickson, I B Gosbell, H Hu, Q Yang, G Schultz, K Vickery
Objectives: Test the performance of topical antimicrobial wound solutions against microbial biofilms using in vitro, ex vivo and in vivo model systems at clinically relevant exposure times. Methods: Topical antimicrobial wound solutions were tested under three different conditions: (in vitro) 4% w/v Melaleuca oil, polyhexamethylene biguanide, chlorhexidine, povidone iodine and hypochlorous acid were tested at short duration exposure times for 15 min against 3 day mature biofilms of Staphylococcus aureus and Pseudomonas aeruginosa; (ex vivo) hypochlorous acid was tested in a porcine skin explant model with 12 cycles of 10 min exposure, over 24 h, against 3 day mature P...
February 1, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29157899/epidemiology-of-diabetic-foot-infections-in-a-reference-tertiary-hospital-in-india
#11
Sanjith Saseedharan, Manisa Sahu, Roonam Chaddha, Edwin Pathrose, Arun Bal, Pallavi Bhalekar, Priyadharshini Sekar, Padma Krishnan
INTRODUCTION: The present study attempts to examine the microbial profile and antibiotic susceptibility of diabetic foot infections in the intensive care unit of a tertiary referral centre for diabetic foot. As part of the study, we also attempted to find the prevalence of blaNDM-like gene among carbapenem-resistant gram negative infections. METHODOLOGY: A prospective study of 261 patients with diabetic foot infections was performed during the period between January 2014 and June 2014...
November 1, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/29110552/antibiotic-resistance-in-diabetic-foot-soft-tissue-infections-a-series-from-greece
#12
Maria Demetriou, Nikolaos Papanas, Periklis Panagopoulos, Maria Panopoulou, Efstratios Maltezos
Diabetic foot infections are a common and serious problem for all health systems worldwide. The aim of this study was to examine the resistance to antibiotics of microorganisms isolated from infected soft tissues of diabetic foot ulcers, using tissue cultures. We included 113 consecutive patients (70 men, 43 women) with a mean age of 66.4 ± 11.2 years and a mean diabetes duration of 14.4 ± 7.6 years presenting with diabetic foot soft tissue infections. Generally, no high antibiotic resistance was observed...
November 1, 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/28989875/bacteriological-profile-of-diabetic-foot-ulcer-with-special-reference-to-drug-resistant-strains-in-a-tertiary-care-center-in-north-east-india
#13
Sudhir K Jain, Rashmisnata Barman
AIM: This study was carried out to determine the bacteriological profile of infected diabetic foot ulcers (DFUs) and the antibiotic resistance pattern from the isolates. An attempt was made to suggest an empiric antibiotic regimen to treat such patients. MATERIALS AND METHODS: Tissue samples were collected from 150 patients between February 2015 and January 2016 with DFUs under aseptic precautions and they were processed as per the Clinical and Laboratory Standards Institute guidelines...
September 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28988505/clinical-and-pharmacokinetic-drug-evaluation-of-delafloxacin-for-the-treatment-of-acute-bacterial-skin-and-skin-structure-infections
#14
REVIEW
Matteo Bassetti, Davide Pecori, Piergiorgio Cojutti, Elda Righi, Federico Pea
In the era of multi-drug resistant pathogens, the adequate treatment of skin and skin structure infections remains a challenge for clinicians. Delafloxacin, with its broad spectrum against Gram-positive, Gram-negative and anaerobic organisms, represents a new therapeutic option in this setting, especially when coverage of methicillin-resistant Staphylococcus aureus is required in the empirical or targeted approach. Areas covered: In this drug evaluation, the Authors have reviewed the pharmacokinetic and pharmacodynamic characteristics of delafloxacin...
November 2017: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/28951333/complications-during-the-treatment-of-diabetic-foot-osteomyelitis
#15
Suzanne A V van Asten, Moez Mithani, Edgar J G Peters, Javier La Fontaine, Paul J Kim, Lawrence A Lavery
AIM: To identify complications of medical treatment in patients with diabetic foot osteomyelitis (DFO). METHODS: We reviewed 143 records of consecutive patients admitted with DFO, confirmed by bone histopathology or culture. Complications monitored included acute kidney injuries (AKI), development of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus (VRE), gastrointestinal complications, and venous catheter related complications during a 12months follow-up period...
June 13, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28892282/diabetic-foot-infection-antibiotic-therapy-and-good-practice-recommendations
#16
Nicholas D Barwell, Marion C Devers, Brian Kennon, Helen E Hopkinson, Claire McDougall, Matthew J Young, Hannah M A Robertson, Duncan Stang, Stephanie J Dancer, Andrew Seaton, Graham P Leese
BACKGROUND: Healthcare events related to diabetic foot disease carry a burden of morbidity, mortality and economic cost. Prompt identification of clinical infection with appropriate tissue sampling limits use of broad spectrum empirical antibiotics and improves antibiotic stewardship. Staphylococcus aureus remains the commonest infecting organism and high-dose flucloxacillin remains the empirical antibiotic of choice for antibiotic naïve patients. Barriers to microbe-specific treatment include: adequate tissue sampling, delays in culture results, drug allergies and the emergence of multidrug-resistant organisms which can complicate the choice of targeted antibiotics...
September 11, 2017: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/28867530/clinical-and-microbiological-profile-of-diabetic-foot-ulcer-patients-in-a-tertiary-care-hospital
#17
Ramya Kateel, Alfred J Augustine, Shivananda Prabhu, Sheetal Ullal, Manohar Pai, Prabha Adhikari
AIM: To evaluate the clinical and microbiological profile of diabetic foot ulcer patients admitted to a tertiary care hospital. METHODOLOGY: This study recruited 120 diabetic foot ulcer patients of all grade. Their medical records were evaluated retrospectively. RESULTS: We found that median age of patient was 60(52, 67.75) years. 68.3% of patients were males. Median duration of diabetes mellitus was 15(10, 20) years. Mean HbA1C and fasting glucose was 10...
August 26, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28836481/empirical-antibiotic-treatment-in-diabetic-foot-infection-a-study-focusing-on-the-culture-and-antibiotic-sensitivity-in-a-population-from-southern-china
#18
Wen-Xia Wu, Dan Liu, Yi-Wen Wang, Chuan Wang, Chuan Yang, Xing-Zhou Liu, Li-Fang Mai, Meng Ren, Li Yan
Diabetic foot and subsequent diabetic ulcer infections are the most devastating complication of diabetes. This study was conducted to explore the bacterial spectrum, sensitivity of microbials, and analysis of the empirical antibiotic regimens in our health center. The study included patients with diabetic foot ulcer infection (DFI) seen from 2009 to 2014. The patients included had all information covering the physical examination, laboratory tests, and image examinations. We sent appropriately obtained specimens for culture prior to starting empirical antibiotic therapy in all participants...
September 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/28718238/bacteriology-of-diabetic-foot-in-tertiary-care-hospital-frequency-antibiotic-susceptibility-and-risk-factors
#19
Syeda Sadia Amjad, Jamal Zafar, Nadia Shams
BACKGROUND: Diabetic foot being one of the frequent and disabling complications of diabetes. In view of widespread regional variation in causative organisms and antimicrobial susceptibility, the current study aimed to determine frequency of causative organisms, their antimicrobial susceptibility and associated risk factors. METHODS: This descriptive cross-sectional study was conducted in 6 months' duration at dept. of Medicine; PIMS Hospital Islamabad. Type 2 Diabetes mellitus patients with diabetic foot ulcer were enrolled after informed consent...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28716100/quality-of-life-and-clinical-radiological-long-term-results-after-implant-associated-infections-in-patients-with-ankle-fracture-a-retrospective-matched-pair-study
#20
Patrick Ziegler, Donat Schlemer, Ingo Flesch, Sonja Bahrs, Ulrich Stoeckle, Sebastian Werner, Christian Bahrs
BACKGROUND: Ankle fractures are frequently occurring injuries. Despite the relatively simple operative technique, patients often suffer from postoperative complications. Little is known about postoperative treatment of implant-associated infections of the ankle. Therefore, this study shows and evaluates a treatment algorithm in long- and short-term outcomes compared to infection-free patients. METHODS: Data from patients of over 20 years of a level 1 trauma center and university hospital was retrospectively analyzed including age, gender, comorbidities, smoking status, fracture classification, number of revisions, length of in-patient stay due to fracture and infection, and results of microbiological specimen with the length of antibiotic treatment...
July 17, 2017: Journal of Orthopaedic Surgery and Research
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