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diabetic foot aureus

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https://www.readbyqxmd.com/read/29912253/-prevalence-and-susceptibility-pattern-of-bacteria-isolated-from-infected-chronic-wounds-in-adult-patients
#1
Víctor Silva, Alicia Marcoleta, Viviana Silva, Dángelo Flores, Teresa Aparicio, Isabel Aburto, Cecilia Latrach, Naldy Febré
BACKGROUND: Chronic wounds are considered a public health problem that may be complicated by bacterial infections, mainly caused by resistant strains. AIM: To study the bacteria prevalence and antimicrobial susceptibility in samples from adult patients with chronic wounds. METHODS: Patients treated at National Institute of Wounds Foundation between May and July 2014, with chronic ulcers in lower extremities with clinical inflammatory signs were recluted...
April 2018: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/29907536/methicillin-resistant-staphylococcus-aureus-nasal-carriage-and-infection-among-patients-with-diabetic-foot-ulcer
#2
Shin-Yi Lin, Nai-Yu Lin, Yu-Yao Huang, Chi-Chun Hsieh, Yhu-Chering Huang
PURPOSE: To evaluate the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) nasal carriage in patients with diabetic foot ulcer (DFU) in Taiwan, and to assess the concordance between colonizing and clinical MRSA isolates from the patients. METHOD: A total of 354 nasal specimens were collected from 112 to 242 diabetic patients with and without foot ulcer, respectively. MRSA clinical isolates from DFU wound cultures were collected for comparison. RESULTS: Nasal carriage rate of S...
June 4, 2018: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/29858265/exacerbated-staphylococcus-aureus-foot-infections-in-obese-diabetic-mice-are-associated-with-impaired-germinal-center-reactions-ig-class-switching-and-humoral-immunity
#3
Christopher W Farnsworth, Eric M Schott, Abigail Benvie, Stephen L Kates, Edward M Schwarz, Steven R Gill, Michael J Zuscik, Robert A Mooney
Obese patients with type 2 diabetes (T2D) are at an increased risk of foot infection, with impaired immune function believed to be a critical factor in the infectious process. In this study, we test the hypothesis that humoral immune defects contribute to exacerbated foot infection in a murine model of obesity/T2D. C57BL/6J mice were rendered obese and T2D by a high-fat diet for 3 mo and were compared with controls receiving a low-fat diet. Following injection of Staphylococcus aureus into the footpad, obese/T2D mice had greater foot swelling and reduced S...
June 1, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29843979/staphylococcus-aureus-requires-less-virulence-to-establish-an-infection-in-diabetic-hosts
#4
Lorena Tuchscherr, Èva Korpos, Hélène van de Vyver, Clais Findeisen, Salome Kherkheulidze, Anke Siegmund, Stefanie Deinhardt-Emmer, Olaf Bach, Martin Rindert, Alexander Mellmann, Cord Sunderkötter, Georg Peters, Lydia Sorokin, Bettina Löffler
Staphylococcus aureus is the most frequent pathogen causing diabetic foot infections. Here, we investigated the degree of bacterial virulence required to establish invasive tissue infections in diabetic organisms. Staphylococcal isolates from diabetic and non-diabetic foot ulcers were tested for their virulence in in vitro functional assays of host cell invasion and cytotoxicity. Isolates from diabetes mellitus type I/II patients exhibited less virulence than isolates from non-diabetic patients, but were nevertheless able to establish severe infections...
May 22, 2018: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/29796774/polymicrobial-interactions-influence-the-agr-copy-number-in-staphylococcus-aureus-isolates-from-diabetic-foot-ulcers
#5
Carina Matias, Isa Serrano, Sofia Van-Harten, Carla Mottola, João J Mendes, Luís Tavares, Manuela Oliveira
Diabetic foot ulcers are a major complication of diabetes and are often colonised by complex bacterial communities, where Staphylococcus aureus is frequently co-present with Pseudomonas aeruginosa. These bacteria interact through quorum sensing, encoded in S. aureus by the accessory gene regulator (agr). Typing and copy number of S. aureus agr were assessed here to give insights on strain variability and possible interspecies influence. As agr is classified in four genetic groups, agr-I, agr-II, agr-III and agr-IV, the agr type of 23 S...
May 23, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29700554/platelet-rich-plasma-as-an-additional-therapeutic-option-for-infected-wounds-with-multi-drug-resistant-bacteria-in-vitro-antibacterial-activity-study
#6
Rıza Aytaç Çetinkaya, Ercan Yenilmez, Patrizio Petrone, Soner Yılmaz, Bayhan Bektöre, Berksan Şimsek, Tuğba Kula Atik, Mustafa Özyurt, Aytekin Ünlü
PURPOSE: Infected wounds, such as diabetic foot infections, are mostly polymicrobial and microorganisms have high resistance rates to antimicrobials. Infected wounds in diabetic patients have high cost, morbidity, and mortality rates. Based on these facts, there is a need for supportive localized treatment options such as platelet-rich plasma (PRP) implementations. Demonstrating the in vitro antimicrobial effect, our aim was to lead up to clinical trials of localized PRP implementations in infected wounds such as diabetic foot infections...
April 26, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29695061/use-of-leukocyte-platelet-l-prf-rich-fibrin-in-diabetic-foot-ulcer-with-osteomyelitis-three-clinical-cases-report
#7
Alessandro Crisci, Giuseppe Marotta, Anna Licito, Edda Serra, Giulio Benincasa, Michela Crisci
In this study, the use of fibrin rich in leukocytes and platelets (L-PRF) was explored to heal osteomyelitis ulcers in a diabetic foot. The goal was to standardize the utilization of L-PRF in patients with osteomyelitis to direct it for healing. L-PRF was obtained autologously from the peripheral blood of the diabetic patients ( n = 3) having osteomyelitis and skin lesions for at least six months. The L-PRF and supernatant serum were inserted into the skin lesion to the bone after a surgical debridement. The evolution of lesions over time was analyzed...
April 24, 2018: Diseases (Basel)
https://www.readbyqxmd.com/read/29592981/burn-aggravated-infected-wart-in-a-patient-with-type-2-diabetes-a-medical-challenge
#8
Tahseen Ahmed Khan, Mahmood Sheikh, Iqbal Azher, Abdul Khaliq Sheikh
An infectious wart of foot in a patient with diabetics is a medical challenge, and it gets worse when aggravated with burns. We present a case of a 67-year-old Pakistani man, diabetic for 20 years presented at our healthcare centre. While awaiting his culture sensitivity report, he was prescribed an empiric antibiotic therapy. Patient then travelled to Saudi Arabia for pilgrimage 3 days later with growth of Staphylococcus aureus and Proteus species in culture and sensitivity report; during his travel, he walked barefoot and the infected wart aggravated with severe burn...
March 28, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29580872/molecular-and-culture-based-assessment-of-bacterial-pathogens-in-subjects-with-diabetic-foot-ulcer
#9
Saba Noor, Alok Raghav, Iqbal Parwez, Maaz Ozair, Jamal Ahmad
INTRODUCTION: Expeditious and precise discerning of bacterial pathogens is a fundamental grail, of clinical diagnostic microbiology. Genotypic detection is a budding substitute to recognize phenotypic culture based processes in bacterial identification. AIMS: We report a comparative evaluation of biochemical and genomic-based assays for exploring the commonest bacterial flora of infected diabetic foot ulcers along with clinical variables of subjects enrolled. METHODS: The pathogens selected (i) Staphylococcus aureus ii) Pseudomonas aeruginosa, iii) Escherichia coli and iv) Klebsiella pneumonia, stood for the most frequent isolates of diabetic foot infection in previous studies from Northern India...
May 2018: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/29564946/virulence-factor-genes-in-staphylococcus-aureus-isolated-from-diabetic-foot-soft-tissue-and-bone-infections
#10
Gerardo Víquez-Molina, Javier Aragón-Sánchez, Cristian Pérez-Corrales, Christian Murillo-Vargas, María Eugenia López-Valverde, Benjamin A Lipsky
The aim of this study is to describe the presence of genes encoding for 4 virulence factors (pvl, eta, etb, and tsst), as well as the mecA gene conferring resistance to beta-lactam antibiotics, in patients with diabetes and a staphylococcal foot infection. We have also analyzed whether isolates of Staphylococcus aureus from bone infections have a different profile for these genes compared with those from exclusively soft tissue infections. In this cross-sectional study of a prospectively recruited series of patients admitted to the Diabetic Foot Unit, San Juan de Dios Hospital, San José, Costa Rica with a moderate or severe diabetic foot infection (DFI), we collected samples from infected soft tissue and from bone during debridement...
March 2018: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/29547034/effects-of-ph-on-the-antibiotic-resistance-of-bacteria-recovered-from-diabetic-foot-ulcer-fluid-an-in-vitro-study
#11
Carla D McArdle, Katie M Lagan, David A McDowell
BACKGROUND: This study investigated the resistance of bacteria isolated from diabetic foot ulcers (DFUs) to antibiotics frequently used in the management of the diabetic foot infections, at a range of pH values (pH 6.5, 7.5, and 8.5) known to exist in DFU wound fluid. This study aimed to determine whether changes (or atypical stasis) in wound fluid pH modulate the antibiotic resistance of DFU isolates, with potential implications in relation to the suppression/eradication of bacterial infections in DFUs...
January 2018: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/29491344/intracardiac-abscess-and-pacemaker-lead-infection-secondary-to-hematogenous-dissemination-of-methicillin-sensitive-staphylococcus-aureus-from-a-prior-diabetic-foot-ulcer-and-osteomyelitis
#12
Kristopher S Pfirman, Robel Haile
BACKGROUND Intracardiac abscesses are an unusual occurrence in developed countries. With the increase in use of implantable cardiac devices, the increase use of and advancements in antibiotics, and the longevity of patients with cardiac devices, one may expect an increase in such infections; however, case reports are rare. We are presenting a case in which hematogenous dissemination of methicillin-sensitive Staphylococcus aureus (MSSA) infection from a lower extremity diabetic ulcer propagated into an infected pacemaker lead and ultimately an intracardiac abscess of the right atrium...
March 1, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29476898/influence-of-multidrug-resistant-organisms-on-the-outcome-of-diabetic-foot-infection
#13
Nese Saltoglu, Onder Ergonul, Necla Tulek, Mucahit Yemisen, Ayten Kadanali, Gul Karagoz, Ayse Batirel, Oznur Ak, Cagla Sonmezer, Haluk Eraksoy, Atahan Cagatay, Serkan Surme, Salih A Nemli, Tuna Demirdal, Omer Coskun, Derya Ozturk, Nurgul Ceran, Filiz Pehlivanoglu, Gonul Sengoz, Turan Aslan, Yasemin Akkoyunlu, Oral Oncul, Hakan Ay, Lutfiye Mulazımoglu, Buket Erturk, Fatma Yilmaz, Gulsen Yoruk, Nuray Uzun, Funda Simsek, Taner Yildirmak, Kadriye Kart Yaşar, Meral Sonmezoglu, Yasar Küçükardali, Nazan Tuna, Oguz Karabay, Nail Ozgunes, Fatma Sargın
OBJECTIVES: We described the clinical outcomes of the diabetic patients who had foot infections with multidrug resistant organisms. METHODS: We included the patients with diabetic foot infections (DFI) from 19 centers, between May 2011 and December 2015. Infection was defined according to IDSA DFI guidelines. Patients with severe infection, complicated moderate infection were hospitalized. The patients were followed-up for 6 months after discharge. RESULTS: In total, 791 patients with DFI were included, 531(67%) were male, median age was 62 (19-90)...
May 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29475383/in-vitro-antibacterial-and-time-kill-assay-of-ethanolic-extract-of-davilla-nitida-bark-on-multidrug-resistant-bacteria-isolated-from-diabetic-foot-lesions
#14
Michele Cezimbra Perim, Joelma da Costa Borges, Eulália Maria Lima da Silva, Thiago Antônio de Sousa Araújo, Ana Carolina Oliveira da Silva, Valéria Christiane da Silva, Solange Cristina Carreiro, Anderson Ferreira Cunha, Maria Cristina da Silva Pranchevicius
This study reported the antimicrobial activity of the bark extract of Davilla nitida on multidrug resistant bacteria isolated from Diabetic Foot Infections. Antibacterial activity of the bark extract was evaluated by agar Disk-Diffusion (DD), Broth Dilution (BD), Checkerboard and Time-kill methods. The extract showed a significant antibacterial activity against all groups of bacteria tested. BD was more sensitive for determining the antibacterial activity of the bark extract than the DD method. The bark extract inhibited the growth of bacteria with high-levels of antibiotic-resistance, such as Pseudomonas spp...
February 23, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29443819/chronic-osteomyelitis-with-staphylococcus-aureus-deformation-in-submicron-canaliculi-of-osteocytes-a-case-report
#15
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...
January 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29424287/calcium-alginate-based-antimicrobial-film-dressings-for-potential-healing-of-infected-foot-ulcers
#16
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
#17
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
#18
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
#19
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-alpha-toxin-accelerates-healing-of-staphylococcus-aureus-infected-wounds-in-nondiabetic-and-diabetic-mice
#20
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 alpha-toxin (AT), an 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 alpha-toxin is effective against S. aureus -infected wounds is unclear...
March 2018: Antimicrobial Agents and Chemotherapy
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