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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
#1
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/28685715/high-staphylococcus-epidermidis-colonization-and-impaired-permeability-barrier-in-facial-seborrheic-dermatitis
#2
Qian An, Meng Sun, Rui-Qun Qi, Li Zhang, Jin-Long Zhai, Yu-Xiao Hong, Bing Song, Hong-Duo Chen, Xing-Hua Gao
BACKGROUND: Seborrheic dermatitis (SD) is a common inflammatory skin condition. The etiology is unclear, although overgrowth of Malassezia on the skin has been suggested to cause SD. This study investigated whether colonization with Staphylococcus plays a role in facial SD, which was not well addressed previously. METHODS: The study was conducted from September 1, 2011 to February 20, 2012 in the First Hospital of China Medical University. In the first phase, the study evaluated the level of transepidermal water loss (TEWL) and the number of colony-forming units (CFU) of Staphylococcus in defined skin areas of SD patients who were human immunodeficiency virus (HIV) seropositive (HIV [+] SD [+] group, n = 13), classical SD (HIV [-] SD [+] group, n = 24) patients, HIV seropositive-non-SD (HIV [+] SD [-] group, n = 16) patients, and healthy volunteers (HIV [-] SD [-] group, n = 16)...
July 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28679522/next-generation-sequence-analysis-reveals-methicillin-resistance-transfer-to-a-methicillin-susceptible-staphylococcus-aureus-mssa-strain-that-subsequently-caused-a-methicillin-resistant-staphylococcus-aureus-mrsa-outbreak-a-descriptive-study
#3
Veronica Weterings, Thijs Bosch, Sandra Witteveen, Fabian Landman, Leo Schouls, Jan Kluytmans
Resistance to methicillin in Staphylococcus aureus is primarily caused by the mecA gene, which is carried on a mobile genetic element: the staphylococcal cassette chromosome mec (SCCmec). Horizontal transfer of this element is supposed to play an important factor in the emergence of new clones of methicillin-resistant Staphylococcus aureus (MRSA), but has been rarely observed in real-time.In 2012, an outbreak occurred involving a healthcare worker (HCW) and three patients all carrying a fusidic-acid resistant MRSA strain...
July 5, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28668467/identification-of-a-pvl-negative-sccmec-iva-sub-lineage-of-the-methicillin-resistant-staphylococcus-aureus-cc80-lineage-understanding-the-clonal-origin-of-ca-mrsa
#4
Sofie Marie Edslev, Henrik Torkil Westh, Paal Skytt Andersen, Robert Skov, Nobumichi Kobayashi, Mette Damkjær Bartels, Francois Vandenesh, Andreas Petersen, Peder Worning, Anders Rhod Larsen, Marc Stegger
OBJECTIVES: Community-acquired MRSA (CA-MRSA) isolates belonging to clonal complex 80 (CC80) are recognized as the European CA-MRSA. The prevailing European CA-MRSA clone carries a type IVc staphylococcal cassette chromosome mec (SCCmec) and expresses Panton-Valentine leukocidin (PVL). Recently, a significant increase of PVL-negative CC80 MRSA has been observed in Denmark. The aim of this study was to examine the genetics and the epidemiology of these, and to compare them to the European CA-MRSA clone in order to understand the emergence of PVL-negative CC80 MRSA...
June 28, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28652437/increased-resistance-of-skin-flora-to-antimicrobial-prophylaxis-in-patients-undergoing-hip-revision-arthroplasty
#5
Heinrich M L Mühlhofer, Lukas Deiss, Philipp Mayer-Kuckuk, Florian Pohlig, Norbert Harrasser, Ulrich Lenze, Hans Gollwitzer, Christian Suren, Peter Prodinger, Rüdiger VON Eisenhart-Rothe, Johannes Schauwecker
BACKGROUND/AIM: Prosthetic joint infection (PJI) remains a major complication after total joint replacement and is the primary indication for revision arthroplasty. Specifically, coagulase-negative Staphylococci (CNS) can cause low-grade infections. Despite the use of cephalosporin-based antimicrobial prophylaxis (AMP) and antiseptic treatment at the surgical site, evidence suggests that a significant number of cases of dermal CNS results in low-grade PJI. Thus, this study examined the bacterial colonization and resistance patterns at the surgical site...
July 2017: In Vivo
https://www.readbyqxmd.com/read/28646693/antibacterial-effect-of-genetically-engineered-bacteriophage-%C3%AF-ef11-%C3%AF-fl1c-%C3%AE-36-p-nisa-on-dentin-infected-with-antibiotic-resistant-enterococcus-faecalis
#6
Justine Monnerat Tinoco, Nadia Liss, Hongming Zhang, Roni Nissan, Wanda Gordon, Eduardo Tinoco, Luciana Sassone, Roy Stevens
OBJECTIVE: Enterococcus faecalis is a gram-positive facultative anaerobic bacterium, which is present in 30-89% of teeth with postendodontic treatment failures. E. faecalis is capable of penetrating dentinal tubules and surviving as a monoculture after conventional endodontic therapy, indicating that it is resistant to commonly used endodontic disinfection protocols. Different E. faecalis strains have shown resistance to several antibiotics, and have been associated with both dental pathology and systemic infections...
June 12, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28642751/in-vitro-antimicrobial-activity-of-chlorquinaldol-against-microorganisms-responsible-for-skin-and-soft-tissue-infections-comparative-evaluation-with-gentamicin-and-fusidic-acid
#7
Monica Bortolin, Alessandro Bidossi, Elena De Vecchi, Maura Avveniente, Lorenzo Drago
Skin and soft tissue infections (SSTIs) are a major therapeutic challenge for clinicians. The emergence of pathogens with decreased susceptibility to available therapies has become an emerging problem often associated with treatment failure. Hence, there is an urgent need for novel broad-spectrum antimicrobial agents. The purpose of this study was to assess the feasibility of chlorquinaldol as an alternative approach to currently used topical antibiotics for the treatment of skin and soft tissue infections...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28640870/dominance-of-community-associated-methicillin-resistant-staphylococcus-aureus-clones-in-a-maternity-hospital
#8
Edet E Udo, Noura Al-Sweih
BACKGROUND: Methicillin- resistant Staphylococcus aureus (MRSA) is a major pathogen causing healthcare- and community- acquired infections. The purpose of this study was to characterize MRSA isolated at the Maternity Hospital between 2006 and 2011 for their genetic relatedness. MATERIALS AND METHODS: The MRSA isolates were investigated using a combination of antibiogram, Staphylococcal chromosome cassette mec (SCCmec) and spa typing to determine their relatedness to MRSA isolated in other Kuwait hospitals...
2017: PloS One
https://www.readbyqxmd.com/read/28600216/molecular-epidemiology-and-antibiotic-resistance-of-methicillin-resistant-staphylococcus-aureus-circulating-in-the-russian-federation
#9
Vladimir Gostev, Alexander Kruglov, Olga Kalinogorskaya, Olga Dmitrenko, Olga Khokhlova, Tatsuo Yamamoto, Yuri Lobzin, Irina Ryabchenko, Sergey Sidorenko
The aim of this study was to investigate the patterns of antimicrobial resistance and molecular features of methicillin-resistant Staphylococcus aureus (MRSA) isolates in Russia. Isolates recovered from hospital patients (n=480), healthy medical personnel (n=25), and healthy carriers (n=13) were included in the study. Hospital-acquired MRSA (HA-MRSA) demonstrated high resistance to ciprofloxacin, gentamicin, and chloramphenicol (76%-92%), moderate - to tetracycline, erythromycin, clindamycin, and rifampicin (38%-54%), and low - to fusidic acid, co-trimoxazole, mupirocin, and daptomycin (2%-7%)...
June 7, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28592549/emergence-of-a-staphylococcus-aureus-clone-resistant-to-mupirocin-and-fusidic-acid-carrying-exotoxin-genes-and-causing-mainly-skin-infections
#10
Anastassios Doudoulakakis, Iris Spiliopoulou, Nikolaos Spyridis, Nikolaos Giormezis, John Kopsidas, Maria Militsopoulou, Evangelia Lebessi, Maria Tsolia
Objectives: Skin and soft tissue infections (SSTIs) caused by mupirocin-resistant Staphylococcus aureus strains have recently increased in our settings. We sought to evaluate the characteristics of these cases over a 43-month period.Methods: All community-acquired staphylococcal infections caused by mupirocin-resistant strains were retrospectively reviewed. Genes encoding high level (HLR) mupirocin resistance (mupA), fusidic acid resistance (fusB), ermA, ermC, PVL (lukS/lukF-PV), exfoliative toxins (eta, etb), fibronectin binding protein A (fnbA) were investigated in 102 preserved selected strains by PCRs...
June 7, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28592405/current-and-emerging-topical-antibacterials-and-antiseptics-agents-action-and-resistance-patterns
#11
REVIEW
Deborah A Williamson, Glen P Carter, Benjamin P Howden
Bacterial skin infections represent some of the most common infectious diseases globally. Prevention and treatment of skin infections can involve application of a topical antimicrobial, which may be an antibiotic (such as mupirocin or fusidic acid) or an antiseptic (such as chlorhexidine or alcohol). However, there is limited evidence to support the widespread prophylactic or therapeutic use of topical agents. Challenges involved in the use of topical antimicrobials include increasing rates of bacterial resistance, local hypersensitivity reactions (particularly to older agents, such as bacitracin), and concerns about the indiscriminate use of antiseptics potentially coselecting for antibiotic resistance...
July 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/28542660/-trichomycosis-trichobacteriosis-capitis-in-an-infant-microbiological-dermoscopic-and-ultrastructural-features
#12
Alexandro Bonifaz, Ixchel Ramírez-Ricarte, Alejandra Rodríguez-Leviz, Marco A Hernández, Carlos Mena, Adriana Valencia
Trichomycosis is a superficial infection caused by Corynebacterium flavescens, which regularly affects axillary, and to a a lesser extent, pubic, scrotal and intergluteal, and exceptionally, head hairs or trichomycosis capitis (TC). This condition is characterised by the formation of bacterial nodules. Clinically, it can be confused with white piedra or pediculosis. The diagnosis is made by microscopic and dermoscopic observation and confirmed by culture. OBJECTIVE: To present a case of TC in an infant and illustrate the microscopic, dermoscopic, and ultrastructural characteristics...
April 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28533232/potentiation-of-antibiotic-activity-by-a-novel-cationic-peptide-potency-and-spectrum-of-activity-of-spr741
#13
David Corbett, Andrew Wise, Tara Langley, Kirsty Skinner, Emily Trimby, Stephen Birchall, Alain Dorali, Stephanie Sandiford, Jennifer Williams, Peter Warn, Martti Vaara, Troy Lister
Novel approaches to the treatment of multi-drug resistant Gram-negative bacterial infections are urgently required. One approach is to potentiate the efficacy of existing antibiotics whose spectrum of activity is limited by the permeability barrier presented by the Gram-negative outer membrane. Cationic peptides derived from polymyxin B have been used to permeabilize the outer membrane, granting antibiotics that would otherwise be excluded access to their targets. We assessed the in vitro efficacy of combinations of SPR741 with conventional antibiotics against Escherichia coli, Klebsiella pneumoniae, and Acinetobacter baumannii Of 35 antibiotics tested, the MICs of eight were reduced 32- to 8,000-fold against E...
May 22, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28507488/microbiological-analysis-of-acute-infections-of-the-nail-fold-on-the-basis-of-bait-thread-test
#14
Hanna Tomczak, Aleksandra Dańczak-Pazdrowska, Adriana Polańska, Agnieszka Osmola-Mańkowska, Jakub Pazdrowski, Wioleta Błażejewska-Gąsior, Anna Horla, Marta Hasse-Cieślińska, Zygmunt Adamski
INTRODUCTION: An acute infection of the nail fold, called paronychia, is a common clinical problem. The basis for the implementation of the treatment is the result of microbiological examination. Due to the rapid and painful course of infection, usually an empirical antimicrobial treatment prior to obtaining microbiological test results is introduced. AIM: The microbial analysis of acute infections of the nail fold. MATERIAL AND METHODS: The study included 32 tests conducted on 31 patients of the Department of Dermatology...
April 2017: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/28435108/molecular-characterization-and-antimicrobial-susceptibility-of-the-ca-mrsa-isolated-from-healthcare-workers-tehran-iran
#15
Solmaz Ohadian Moghadam, Mohammad Modoodi Yaghooti, Nasrin Pourramezan, Mohammad Reza Pourmand
INTRODUCTION: Methicillin resistant Staphylococcus aureus (MRSA) has become as a nosocomial pathogen worldwide. Considering the importance of MRSA typing for understanding the evolution and dissemination of these strains, we studied the molecular characteristics of MRSA colonized healthcare workers (HCWs). METHODOLOGY: All MRSA isolated from HCWs, were genotyped using staphylococcal cassette chromosome mec (SCCmec) with multiplex PCR assay, multilocus sequence typing (MLST) and spa typing...
April 20, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28412568/first-report-on-mrsa-cc398-recovered-from-wild-boars-in-the-north-of-portugal-are-we-facing-a-problem
#16
Margarida Sousa, Nuno Silva, Vera Manageiro, Sónia Ramos, António Coelho, David Gonçalves, Manuela Caniça, Carmen Torres, Gilberto Igrejas, Patrícia Poeta
The aim of the present study was to evaluate the resistance of Staphylococcus aureus recovered from wild boars, to analyze their genetic lineages, and to investigate the susceptibility to oxacillin. Samples from mouth and nose of 45 wild boars (Sus scrofa) were collected during hunt activity from November 2012 to January 2013 in the North of Portugal. S. aureus isolates were recovered from 30 of these samples (33%); one isolate/sample was further studied. The susceptibility of the isolates was tested by disk-diffusion test against 14 antimicrobial agents and minimal inhibitory concentration was used to test oxacillin according to EUCAST guidelines...
April 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28379309/evidence-of-archaeal-methanogens-in-brain-abscess
#17
Michel Drancourt, Vanessa Demonfort Nkamga, Ndèye Aïssatou Lakhe, Jean-Marie Régis, Henry Dufour, Pierre-Edouard Fournier, Yassina Bechah, W Michael Scheld, Didier Raoult
Background.: Methanogens are antibiotic-resistant anaerobic archaea which escape routine detection in clinical microbiology. We hypothesized that methanogens may participate as part of the anaerobic community causing brain abscess. Methods.: Methanogens were investigated in one index sample by specific PCR-sequencing and culture. The pathogenesis of a methanogen isolate was assessed in a mouse model of brain abscess. Archaea-specific qPCR and metagenomics were used to detect specific archaeal sequences in brain abscess samples and controls...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28370366/new-insights-on-the-antibacterial-efficacy-of-miconazole-in-vitro
#18
P Nenoff, D Koch, C Krüger, C Drechsel, P Mayser
Miconazole is a broad-spectrum antifungal used in topical preparations. In the present investigation the minimal inhibitory concentration (MIC) of miconazole for eighty wild type strains of gram-positive and gram-negative bacteria isolated from infected skin lesions was assessed using a modified agar dilution test (adapted to CLSI, Clinical Laboratory Standards Institute). 14 ATCC reference strains served as controls. Miconazole was found efficacious against gram-positive aerobic bacteria (n=62 species), the MICs against Staphylococcus (S...
March 30, 2017: Mycoses
https://www.readbyqxmd.com/read/28359962/quantitative-analysis-of-binary-polymorphs-mixtures-of-fusidic-acid-by-diffuse-reflectance-ftir-spectroscopy-diffuse-reflectance-ft-nir-spectroscopy-raman-spectroscopy-and-multivariate-calibration
#19
Canyong Guo, Xuefang Luo, Xiaohua Zhou, Beijia Shi, Juanjuan Wang, Jinqi Zhao, Xiaoxia Zhang
Vibrational spectroscopic techniques such as infrared, near-infrared and Raman spectroscopy have become popular in detecting and quantifying polymorphism of pharmaceutics since they are fast and non-destructive. This study assessed the ability of three vibrational spectroscopy combined with multivariate analysis to quantify a low-content undesired polymorph within a binary polymorphic mixture. Partial least squares (PLS) regression and support vector machine (SVM) regression were employed to build quantitative models...
June 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28289111/oral-and-topical-antibiotics-for-clinically-infected-eczema-in-children-a-pragmatic-randomized-controlled-trial-in-ambulatory-care
#20
Nick A Francis, Matthew J Ridd, Emma Thomas-Jones, Christopher C Butler, Kerenza Hood, Victoria Shepherd, Charis A Marwick, Chao Huang, Mirella Longo, Mandy Wootton, Frank Sullivan
PURPOSE: Eczema may flare because of bacterial infection, but evidence supporting antibiotic treatment is of low quality. We aimed to determine the effect of oral and topical antibiotics in addition to topical emollient and corticosteroids in children with clinically infected eczema. METHODS: We employed a 3-arm, blinded, randomized controlled trial in UK ambulatory care. Children with clinical, non-severely infected eczema were randomized to receive oral and topical placebos (control), oral antibiotic (flucloxacillin) and topical placebo, or topical antibiotic (fusidic acid) and oral placebo, for 1 week...
March 2017: Annals of Family Medicine
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