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Lugdunensis

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https://www.readbyqxmd.com/read/28717325/tetracycline-resistance-phenotypes-and-genotypes-of-coagulase-negative-staphylococcal-isolates-from-bubaline-mastitis-in-egypt
#1
K A Abd El-Razik, A A Arafa, R H Hedia, E S Ibrahim
AIM: This study was devoted to elucidate the tetracycline resistance of coagulase-negative staphylococci (CNS) derived from normal and subclinical mastitic (SCM) buffaloes' milk in Egypt. MATERIALS AND METHODS: A total of 81 milk samples from 46 normal buffalo milk samples and 35 SCM buffalo milk samples at private dairy farms of Egypt were used in this study. CNS were identified using phenotypic and molecular methods (polymerase chain reaction [PCR]). CNS isolates were tested for tetracycline resistance using routine methods and multiplex PCR targeting tetracycline (tet) resistance genes followed by sequencing of positive PCR products and phylogenetic analysis...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28702199/prevalence-of-methicillin-resistance-and-macrolide-lincosamide-streptogramin-b-resistance-in-staphylococcus-haemolyticus-among-clinical-strains-at-a-tertiary-care-hospital-in-thailand
#2
S Teeraputon, P Santanirand, T Wongchai, W Songjang, N Lapsomthob, D Jaikrasun, S Toonkaew, P Tophon
Staphylococcus spp. is a major cause of nosocomial infection and sepsis. However, increasing drug resistance is becoming a challenge to microbiologists. The purpose of this study was to identify and determine antimicrobial resistance phenotypes and drug resistance genes of clinical coagulase-negative staphylococci (CoNS) isolates at Mae Sot Hospital in Tak province, Thailand. A total of 229 CoNS isolates were collected from clinical specimens during two periods in 2014 and in 2015. Staphylococcus haemolyticus was the most prevalent species (37...
September 2017: New Microbes and New Infections
https://www.readbyqxmd.com/read/28638293/septic-embolic-stroke-resulting-from-staphylococcus-lugdunensis-endocarditis
#3
Htoo Kyaw, Atif Z Shaikh, Gokul Yaratha, Misra Deepika
BACKGROUND: Staphylococcus lugdunensis, a member of the coagulase-negative staphylococci (CoNS), has been recognized as a causal organism for infective endocarditis since the 1980s. Although most CoNS have an insidious and chronic nature, they are involved in a variety of systemic infections. S lugdunensis infective endocarditis is a rare entity but is as catastrophic as Staphylococcus aureus infective endocarditis and requires aggressive antibiotic therapy and, typically, valve replacement...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28607020/targeting-quorum-sensing-signal-biosynthesis-to-fight-antibiotic-resistant-infections-ambuic-acid-as-a-model-inhibitor
#4
Daniel A Todd, Corey P Parlet, Heidi A Crosby, Cheryl L Malone, Kristopher P Heilmann, Alexander R Horswill, Nadja B Cech
There has been major interest by the scientific community in anti-virulence approaches against bacterial infections. However, partly due to a lack of viable lead compounds, anti-virulence therapeutics have yet to reach the clinic. Here we investigate the development of an anti-virulence lead targeting quorum sensing signal-biosynthesis, a process that is conserved in Gram positive bacterial pathogens. Some preliminary studies suggest that the small molecule ambuic acid is a signal biosynthesis inhibitor. To confirm this, we construct a methicillin-resistant Staphylococcus aureus (MRSA) strain that decouples AIP production from regulation, and demonstrate that AIP production is inhibited in this mutant...
June 12, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28559263/efficient-killing-of-planktonic-and-biofilm-embedded-coagulase-negative-staphylococci-by-bactericidal-protein-p128
#5
Nethravathi Poonacha, Sandhya Nair, Srividya Desai, Darshan Tuppad, Deepika Hiremath, Thulasi Mohan, Aradhana Vipra, Umender Sharma
Coagulase negative staphylococci (CoNS) are the major causative agents of foreign body-related infections including catheters-related blood stream infections. Because of involvement of biofilms, the foreign body-related infections are difficult to treat. P128, a chimeric recombinant phage-derived ectolysin has been shown to possess bactericidal activity on strains of S. aureus including MRSA. We have now tested the killing potential of P128 on three clinically significant species of CoNS, S. epidermidis, S...
May 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28529089/kinetics-of-biofilm-formation-by-staphylococcus-lugdunensis-strains-in-bone-and-joint-infections
#6
Xavier Argemi, Gilles Prévost, Philippe Riegel, Christian Provot, Stéphanie Badel-Berchoux, François Jehl, Elodie Olivares, Yves Hansmann
OBJECTIVE: To describe the clinical presentation and 1-year follow-up of patients with bone and joint infections (BJIs) caused by Staphylococcus lugdunensis and evaluate its biofilm-forming capacities. PATIENTS AND METHODS: Overall, 28 patients with BJIs from VISLISI clinical trials were included. We evaluated 1-year clinical follow-up and analyzed biofilm production kinetics of the 28 strains using the BioFilm Ring Test®. RESULTS: Of all patients, 12 had osteoarticular infections without material and 16 had prosthetic joint infections, of which 9 underwent a 1-stage revision procedure...
May 12, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28524741/a-surgical-case-of-mycotic-aneurysm-with-staphylococcus-lugdunensis-endocarditis
#7
Kosuke Mukaihara, Kazuhisa Matsumoto, Jun Kadono, Yutaka Imoto
A 74-year-old man with a history of mitral valve repair was referred to our hospital with fever and diagnosed with mitral valve endocarditis involving occlusion of the superior mesenteric artery. Bacterial cultures showed Staphylococcus lugdunensis. Despite antibiotic therapy, orthopnea ensued due to valve destruction. Emergency mitral valve replacement was performed. Computed tomography on postoperative day 10 revealed a rapidly expanding mycotic aneurysm of the superior mesenteric artery. Aneurysmectomy was undertaken...
May 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28506660/specific-clones-of-staphylococcus-lugdunensis-may-be-associated-with-colon-carcinoma
#8
Norihisa Noguchi, Mari Fukuzawa, Takeaki Wajima, Kaoru Yokose, Masae Suzuki, Hidemasa Nakaminami, Takashi Kawai, Fuminori Moriyasu, Masanori Sasatsu
Staphylococcus lugdunensis produces a tannase with activity that may be associated with the onset of colon carcinoma. To clarify this feature of colon carcinoma-associated S. lugdunensis, we obtained isolates from healthy subjects and patients with colon adenomas and carcinomas and analyzed their genetic backgrounds. In total, 40 S. lugdunensis isolates from 288 rectal swabs collected between 2002 and 2008 were used. These isolates were classified into four groups according to the diseases of the subjects: healthy (n=13), colon carcinoma (n=13), colon adenoma (n=9), and unknown (n=5)...
May 11, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28486995/antimicrobial-resistance-and-virulence-characterization-of-staphylococcus-aureus-and-coagulase-negative-staphylococci-from-imported-beef-meat
#9
Kamelia Osman, Avelino Alvarez-Ordóñez, Lorena Ruiz, Jihan Badr, Fatma ElHofy, Khalid S Al-Maary, Ihab M I Moussa, Ashgan M Hessain, Ahmed Orabi, Alaa Saad, Mohamed Elhadidy
BACKGROUND: The objectives of this study were to characterize the diversity and magnitude of antimicrobial resistance among Staphylococcus species recovered from imported beef meat sold in the Egyptian market and the potential mechanisms underlying the antimicrobial resistance phenotypes including harboring of resistance genes (mecA, cfr, gyrA, gyrB, and grlA) and biofilm formation. RESULTS: The resistance gene mecA was detected in 50% of methicillin-resistant non-Staphylococcus aureus isolates (4/8)...
May 10, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28444231/whole-genome-sequencing-of-seven-strains-of-staphylococcus-lugdunensis-allows-identification-of-mobile-genetic-elements
#10
Xavier Argemi, Véronique Martin, Valentin Loux, Sandrine Dahyot, Jérémie Lebeurre, Aurélien Guffroy, Mickael Martin, Aurélie Velay, Daniel Keller, Philippe Riegel, Yves Hansmann, Nicodème Paul, Gilles Prévost
Coagulase negative staphylococci are normal inhabitant of the human skin flora that account for an increasing number of infections, particularly hospital-acquired infections. Staphylococcus lugdunensis has emerged as a most virulent species causing various infections with clinical characteristics close to what clinicians usually observe with Staphylococcus aureus and both bacteria share more than 70% of their genome. Virulence of S. aureus relies on a large repertoire of virulence factors, many of which are encoded on mobile genetic elements...
May 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28405808/staphylococcus-lugdunensis-a-neglected-pathogen-of-infections-involving-fracture-fixation-devices
#11
Piseth Seng, Madou Traore, Jean-Philippe Lavigne, Laurence Maulin, Jean-Christophe Lagier, Jean-François Thiery, Pierre-Yves Levy, Pierre-Marie Roger, Eric Bonnet, Albert Sotto, Andreas Stein
PURPOSE: Cases of fracture-fixation device infection involving Staphylococcus lugdunensis are not frequent. The clinical characteristics and the choice of treatment strategies of these infections are not obviously known to date. METHODS: We performed a review of fracture-fixation device infection involving S. lugdunensis managed by our centres. RESULTS: Among the 38 cases of fracture-fixation device infection involving S. lugdunensis, 53% were located in the tibia...
April 12, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28348795/complicated-sea-urchin-induced-wound-infection-caused-by-vibrioalginolyticus-and-staphylococcus-lugdunensis-in-a-14-year-old-boy
#12
Christoph André Bultmann, Jens-Oliver Steiß, Cornelia Langner, Birgit Benkert, Magdalena Havener, Uta Küsters, Stephan Georg Hühn-Lindenbein, Dietrich Mack
INTRODUCTION: Wound infections with Vibrio alginolyticus, a Gram-negative bacterium found in all temperate oceans, are rarely reported. However, a rising incidence of wound infections caused by V. alginolyticus requires better knowledge about this infectious agent. CASE PRESENTATION: We report the case of a 14-year-old boy suffering from a wound infection caused by V. alginolyticus and Staphylococcus lugdunensis after stepping on a sea urchin. Despite wound debridement and antibiotic therapy with cefaclor, the lesion did not heal over several weeks...
December 2016: JMM Case Reports
https://www.readbyqxmd.com/read/28122871/multicenter-evaluation-of-the-portrait-staph-id-r-blood-culture-panel-for-rapid-identification-of-staphylococci-and-detection-of-the-meca-gene
#13
Gerald A Denys, Vanessa Collazo-Velez, Stephen Young, Judy A Daly, Marc Roger Couturier, Matthew L Faron, Blake W Buchan, Nathan Ledeboer
Bloodstream infections are a leading cause of morbidity and mortality in the United States and are associated with increased health care costs. We evaluated the Portrait Staph ID/R blood culture panel (BCP) multiplex PCR assay (Great Basin Scientific, Salt Lake City, UT) for the rapid and simultaneous identification (ID) of Staphylococcus aureus, Staphylococcus lugdunensis, and Staphylococcus species to the genus level and the detection of the mecA gene directly from a positive blood culture bottle. A total of 765 Bactec bottles demonstrating Gram-positive cocci in singles or clusters were tested during the prospective trial at 3 clinical sites...
April 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28111598/the-mpeg-pcl-copolymer-for-selective-fermentation-of-staphylococcus-lugdunensis-against-candida-parapsilosis-in-the-human-microbiome
#14
Ming-Shan Kao, Yanhan Wang, Shinta Marito, Stephen Huang, Wan-Zhen Lin, Jon A Gangoiti, Bruce A Barshop, Choi Hyun, Woan-Ruah Lee, James A Sanford, Richard L Gallo, Yuping Ran, Wan-Tzu Chen, Chun-Jen Huang, Ming-Fa Hsieh, Chun-Ming Huang
Many human skin diseases, such as seborrheic dermatitis, potentially occur due to the over-growth of fungi. It remains a challenge to develop fungicides with a lower risk of generating resistant fungi and non-specifically killing commensal microbes. Our probiotic approaches using a selective fermentation initiator of skin commensal bacteria, fermentation metabolites or their derivatives provide novel therapeutics to rein in the over-growth of fungi. Staphylococcus lugdunensis (S. lugdunensis) bacteria and Candida parapsilosis (C...
August 2016: Journal of microbial & biochemical technology
https://www.readbyqxmd.com/read/28017792/vislisi-trial-a-prospective-clinical-study-allowing-identification-of-a-new-metalloprotease-and-putative-virulence-factor-from-staphylococcus-lugdunensis
#15
X Argemi, G Prévost, P Riegel, D Keller, N Meyer, M Baldeyrou, N Douiri, N Lefebvre, K Meghit, C Ronde Oustau, D Christmann, S Cianférani, J M Strub, Y Hansmann
OBJECTIVE: Staphylococcus lugdunensis is a coagulase-negative staphylococcus that displays an unusually high virulence rate close to that of Staphylococcus aureus. It also shares phenotypic properties with S. aureus and several studies found putative virulence factors. The objective of the study was to describe the clinical manifestations of S. lugdunensis infections and investigate putative virulence factors. METHOD: We conducted a prospective study from November 2013 to March 2016 at the University Hospital of Strasbourg...
May 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28003590/multicenter-study-of-the-clinical-presentation-of-staphylococcus-lugdunensis-bacteremia-in-japan
#16
Yusuke Ainoda, Nozomi Takeshita, Ryota Hase, Takahiro Mikawa, Naoto Hosokawa, Ichiro Kawamura, Hanako Kurai, Masahiro Abe, Muneyoshi Kimura, Hideki Araoka, Takahiro Fujita, Kyoichi Totsuka, Kazuhisa Mezaki, Noritaka Sekiya, Norio Ohmagari
Staphylococcus lugdunensis (SL) is a highly pathogenic bacterium compared to other coagulase-negative Staphylococcus spp. (CoNS). However, in Japan, data for this pathogen are sparse, and the current prevalence of SL bacteremia is unknown.A prospective multicenter study across five facilities was performed to investigate the prevalence of SL in blood culture specimens. There were 3,284 patients with positive blood cultures, and 2,478 patients had bacteremia. Among patients with bacteremia, 7 patients (0.28%) had SL bacteremia...
December 22, 2016: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27930711/licheniocin-50-2-and-bacteriocins-from-lactococcus-lactis-subsp-lactis-biovar-diacetylactis-bgbu1-4-inhibit-biofilms-of-coagulase-negative-staphylococci-and-listeria-monocytogenes-clinical-isolates
#17
Ivana Cirkovic, Dragana D Bozic, Veselin Draganic, Jelena Lozo, Tanja Beric, Milan Kojic, Biljana Arsic, Eliana Garalejic, Slobodanka Djukic, Slavisa Stankovic
BACKGROUND: Coagulase negative staphylococci (CoNS) and Listeria monocytogenes have important roles in pathogenesis of various genital tract infections and fatal foetomaternal infections, respectively. The aim of our study was to investigate the inhibitory effects of two novel bacteriocins on biofilms of CoNS and L. monocytogenes genital isolates. METHODS: The effects of licheniocin 50.2 from Bacillus licheniformis VPS50.2 and crude extract of bacteriocins produced by Lactococcus lactis subsp...
2016: PloS One
https://www.readbyqxmd.com/read/27927926/clinical-and-microbiological-aspects-of-%C3%AE-lactam-resistance-in-staphylococcus-lugdunensis
#18
Ian H McHardy, Jennifer Veltman, Janet Hindler, Katia Bruxvoort, Marissa M Carvalho, Romney M Humphries
Antimicrobial susceptibility results from broth microdilution MIC testing of 993 Staphylococcus lugdunensis isolates recovered from patients at a tertiary care medical center from 2008 to 2015 were reviewed. Ninety-two oxacillin-susceptible isolates were selected to assess the accuracy of penicillin MIC testing, the penicillin disk diffusion test, and three β-lactamase tests, including the cefoxitin-induced nitrocefin test, penicillin cloverleaf assay, and penicillin disk zone edge test. The results of all phenotypic tests were compared to the results of blaZ PCR...
February 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27920984/staphylococcus-lugdunensis-endocarditis-with-destruction-of-the-ventricular-septum-and-multiple-native-valves
#19
Celestine Ishiekwene, Monica Ghitan, Margaret Kuhn-Basti, Edward Chapnick, Yu Shia Lin
Staphylococcus lugdunensis (S. lugdunensis) is a coagulase negative staphylococcus (CoNS) that can cause destructive infective endocarditis. S. lugdunensis, unlike other CoNS, should be considered to be a pathogen. We report the first case of S. lugdunensis endocarditis causing ventricular septal defect and destruction of the aortic and mitral valves. A 53-year-old male with morbid obesity and COPD presented with intermittent fever and progressive shortness of breath for 2 weeks. Chest examination showed bilateral basal crepitations, and a grade 2 systolic murmur along the right sternal border...
2017: IDCases
https://www.readbyqxmd.com/read/27920760/prevalence-of-the-antibiotic-resistance-genes-in-coagulase-positive-and-negative-staphylococcus-in-chicken-meat-retailed-to-consumers
#20
Kamelia Osman, Jihan Badr, Khalid S Al-Maary, Ihab M I Moussa, Ashgan M Hessain, Zeinab M S Amin Girah, Usama H Abo-Shama, Ahmed Orabi, Aalaa Saad
The use of antibiotics in farm management (growing crops and raising animals) has become a major area of concern. Its implications is the consequent emergence of antibiotic resistant bacteria (ARB) and accordingly their access into the human food chain with passage of antibiotic resistance genes (ARG) to the normal human intestinal microbiota and hence to other pathogenic bacteria causative human disease. Therefore, we pursued in this study to unravel the frequency and the quinolone resistance determining region, mecA and cfr genes of methicillin-susceptible Staphylococcus aureus (MSSA), methicillin-resistant S...
2016: Frontiers in Microbiology
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