keyword
MENU ▼
Read by QxMD icon Read
search

staphylococcus environment

keyword
https://www.readbyqxmd.com/read/28321999/factors-influencing-the-contamination-rate-of-human-organ-cultured-corneas
#1
Daniel Röck, Johanna Wude, Karl U Bartz-Schmidt, Efdal Yoeruek, Sebastian Thaler, Tobias Röck
PURPOSE: To assess the influence of donor, environment and storage factors on the contamination rate of organ-cultured corneas, to consider the microbiological species causing corneal contamination and to investigate the corresponding sensitivities. METHODS: Data from 1340 consecutive donor corneas were analysed retrospectively. Logistic regression analysis was used to assess the influence of different factors on the contamination rate of organ-cultured corneas for transplantation...
March 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28321572/the-extent-of-environmental-and-body-contamination-through-aerosols-by-hydro-surgical-debridement-in-the-lumbar-spine
#2
David Putzer, Ricarda Lechner, Debora Coraca-Huber, Astrid Mayr, Michael Nogler, Martin Thaler
INTRODUCTION: Surgical site infections occur in 1-6% of spinal surgeries. Effective treatment includes early diagnosis, parenteral antibiotics and early surgical debridement of the wound surface. MATERIALS AND METHODS: On a human cadaver, we executed a complete hydro-surgery debridement including a full surgical setup such as draping. The irrigation fluid was artificially contaminated with Staphylococcus aureus (ATCC 6538). Surveillance cultures were used to detect environmental and body contamination of the surgical team...
March 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28320836/adaptive-upregulation-of-clumping-factor-a-clfa-by-s-aureus-in-the-obese-type-2-diabetic-host-mediates-increased-virulence
#3
Christopher W Farnsworth, Eric M Schott, Sarah E Jensen, Jacob Zukoski, Abigail M Benvie, Majed A Refaai, Stephen L Kates, Edward M Schwarz, Michael J Zuscik, Steven R Gill, Robert A Mooney
Obesity and associated type 2 diabetes (T2D) are important risk factors for infection following orthopaedic implant surgery. Staphylococcus aureus, the most common pathogen in bone infections, adapts to multiple environments to survive and evade host immune responses. Whether adaptation of S. aureus to the unique environment of the obese/T2D host accounts for its increased virulence and persistence in this population is unknown. Thus, we assessed implant-associated osteomyelitis in normal versus high fat-diet obese/T2D mice and found that S...
March 20, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28318779/infection-control-implications-of-the-laundering-of-ambulance-staff-uniforms-and-reusable-mops
#4
W G Mackay, S Whitehead, N Purdue, M Smith, N Redhead, C Williams, S Wilson
There is a lack of published studies on laundering in ambulance services. We performed bacterial culture on soiled and unsoiled uniforms and reusable mop heads artificially contaminated with Escherichia coli, Staphylococcus aureus, and Clostridium difficile spores. Current laundering processes used for routine cleans in the ambulances appears, from our simulations, to be effective at reducing vegetative pathogenic bacteria to undetectable levels, <3.398log10 colony-forming units (S. aureus and E. coli)...
February 22, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28318645/comparison-of-survivability-of-staphylococcus-aureus-and-spores-of-aspergillus-niger-on-commonly-used-floor-materials
#5
Mridula Gupta, Michael Bisesi, Jiyoung Lee
BACKGROUND: The survivability of Staphylococcus aureus and spores of Aspergillus niger was compared on 5 common floor materials. METHODS: Floor materials were inoculated with a known concentration of S aureus and spores of A niger on day 0. Their survivability was measured on days, 2, 7, 14, and 28 by bulk rinsate method and enumerated using culture-based method. RESULTS: The difference in change of S aureus levels was statistically significant for all tested days (P < ...
March 17, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28297697/evaluation-of-infection-resistance-of-biodegradable-versus-conventional-annuloplasty-rings-in-an-in-vivo-rat-subcutaneous-model
#6
Ilhan Ozgol, Burak Can Depboylu, Aybala Tongut, Sinem Ozdemir, Yasar Bagdatlı, Sanaz Ainechi, Buge Oz, Jean-Claude Pache, Selim Erenturk, Afksendiyos Kalangos, Ali Can Hatemi, Mustafa Cikirikcioglu
BACKGROUND: Biodegradable atrioventricular annuloplasty rings are theoretically more infection resistant due to their intra-annular implantation technique and nonporous structures (monofilament of poly-1,4-dioxanone). The aim of this study was to investigate the infection resistance of a biodegradable annuloplasty ring (Kalangos-Bioring®) in a rat subcutaneous implantation model and to compare it with a commonly used conventional annuloplasty ring (Edwards Physio II®). METHODS: This study included 32 Wistar albino rats which were divided into 2 groups according to the implantation of sterile or infected annuloplasty rings as control and study groups...
March 16, 2017: European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes
https://www.readbyqxmd.com/read/28289460/the-evaluation-of-mrsa-surveillance-cultures-by-the-number-and-combinations-of-anatomical-sites
#7
Irena Grmek Kosnik, Alenka Storman, Ziva Petrovic, Slavica Robnik, Urska Dermota, Tjasa Zohar Cretnik
INTRODUCTION: The identification of patients infected and/or colonised by methicillin resistant Staphylococcus aureus (MRSA) is necessary for the timely introduction of measures for infection control. We compared the diagnostic efficacy of combinations of MRSA surveillance swabs routinely taken by health institutions in the country. METHODS: All surveillance samples, which were sent for a microbiological analysis to detect MRSA with the culture method in 2014, in the three departments for medical microbiology of the National Laboratory for Health, Environment and Food, were included in this study...
March 1, 2017: Zdravstveno Varstvo
https://www.readbyqxmd.com/read/28278280/natural-antimicrobial-peptide-complexes-in-the-fighting-of-antibiotic-resistant-biofilms-calliphora-vicina-medicinal-maggots
#8
Natalia Gordya, Andrey Yakovlev, Anastasia Kruglikova, Dmitry Tulin, Evdokia Potolitsina, Tatyana Suborova, Domenico Bordo, Camillo Rosano, Sergey Chernysh
Biofilms, sedimented microbial communities embedded in a biopolymer matrix cause vast majority of human bacterial infections and many severe complications such as chronic inflammatory diseases and cancer. Biofilms' resistance to the host immunity and antibiotics makes this kind of infection particularly intractable. Antimicrobial peptides (AMPs) are a ubiquitous facet of innate immunity in animals. However, AMPs activity was studied mainly on planktonic bacteria and little is known about their effects on biofilms...
2017: PloS One
https://www.readbyqxmd.com/read/28267594/effects-of-colistin-on-biofilm-matrices-of-escherichia-coli-and-staphylococcus-aureus
#9
Mareike Klinger-Strobel, Claudia Stein, Christina Forstner, Oliwia Makarewicz, Mathias W Pletz
Biofilms are the preferred environment of micro-organisms on various surfaces such as catheters and heart valves, are associated with numerous difficult-to-treat and recurrent infections, and confer an extreme increase in antibiotic tolerance to most compounds. The aim of this study was to evaluate how colistin affects both the extracellular biofilm matrix and the embedded bacteria in biofilms of methicillin-resistant Staphylococcus aureus (MRSA), a species with intrinsic resistance to colistin, and colistin-susceptible Escherichia coli...
March 4, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28261187/detection-and-genetic-environment-of-pleuromutilin-lincosamide-streptogramin-a-resistance-genes-in-staphylococci-isolated-from-pets
#10
Fengru Deng, Huiwen Wang, Yifei Liao, Jun Li, Andrea T Feßler, Geovana B Michael, Stefan Schwarz, Yang Wang
Increasing emergence of staphylococci resistant to pleuromutilins, lincosamides, and streptogramin A (PLSA) and isolated from humans and pets is a growing public health concern worldwide. Currently, there was only one published study regarding one of the PLSA genes, vga(A) detected in staphylococci isolated from cat. In this study, eleven pleuromutilin-resistant staphylococci from pets and two from their owners were isolated and further characterized for their antimicrobial susceptibilities, plasmid profiles, genotypes, and genetic context of the PLSA resistance genes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28258293/interaction-between-methicillin-resistant-staphylococcus-aureus-mrsa-and-acanthamoeba-polyphaga
#11
Thamires Klein de Souza, Scheila Silva Soares, Lisianne Brittes Benitez, Marilise Brittes Rott
The interactions that occur between bacteria and amoebae can give through mutual relations, where both organisms benefit from the association or parasitic in which one organism benefits at the expense of the other. When these organisms share the same environment, it can result in some changes in the growth of organisms, in adaptation patterns, in morphology, development or even in their ability to synthesize proteins and other substances. In this study, the interaction between Acanthamoeba polyphaga and Staphylococcus aureus (MRSA) was evaluated using a co-culture model at different incubation times...
March 3, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28256775/enhanced-adhesion-of-streptococcus-mutans-to-hydroxyapatite-after-exposure-to-saliva
#12
Christian Spengler, Nicolas Thewes, Friederike Nolle, Thomas Faidt, Natalia Umanskaya, Matthias Hannig, Markus Bischoff, Karin Jacobs
Streptococcus mutans cells form robust biofilms on human teeth and are strongly related to caries incidents. Hence, understanding the adhesion of S. mutans in the human oral cavity is of major interest for preventive dentistry. In this study, we report on atomic force microscopy-based single-cell force spectroscopy measurements of S. mutans cells to hydroxyapatite surfaces. We observe for almost all measurements a significant difference in adhesion strength for S. mutans as well as for Staphylococcus carnosus cells...
March 3, 2017: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/28235987/staphylococcus-enterotoxin-profile-of-china-isolates-and-the-superantigenicity-of-some-novel-enterotoxins
#13
Menglu Shen, Yi Li, Linlin Zhang, Songbao Dai, Jiashun Wang, Yongqing Li, Lei Zhang, Jinhai Huang
The genus of staphylococcus widely distributes in environments and contributes to a variety of animal and human diseases. The enterotoxins (SEs) secreted by this type of pathogen have been the leading cause of bacterial toxic shock syndrome and food poisoning, and thus present a substantial concern to public health. In this study, we analyzed the superantigen profile of 122 staphylococcus strains isolated from diverse sources. When screened for the presence and prevalence of 17 known se or se-like (sel) genes, except selj, all other genes were detected in these isolates...
February 24, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28235746/exploring-the-binding-sites-of-staphylococcus-aureus-phenylalanine-trna-synthetase-a-homology-model-approach
#14
Samar S Elbaramawi, Samy M Ibrahim, El-Sayed M Lashine, Mohamed E El-Sadek, Efi Mantzourani, Claire Simons
Increased resistance of MRSA (multidrug resistance Staphylococcus aureus) to anti-infective drugs is a threat to global health necessitating the development of anti-infectives with novel mechanisms of action. Phenylalanine tRNA synthetase (PheRS) is a unique enzyme of the aminoacyl-tRNA synthetases (aaRSs), which are essential enzymes for protein biosynthesis. PheRS is an (αb)2 tetrameric enzyme composed of two alpha subunits (PheS) and two larger beta subunits (PheT). Our potential target in the drug development for the treatment of MRSA infections is the phenylalanine tRNA synthetase alpha subunit that contains the binding site for the natural substrate...
February 10, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28231617/characterization-of-staphylococcus-epidermidis-strains-isolated-from-industrial-cleanrooms-under-regular-routine-disinfection
#15
U Ribič, A Klančnik, B Jeršek
AIMS: The purpose of this study was the genotypic and phenotypic characterization of 57 strains of Staphylococcus epidermidis isolated from cleanroom environments, based on their biofilm formation and antimicrobial resistance profiles. METHODS AND RESULTS: Biofilm formation was investigated using real-time PCR (icaA, aap, bhp genes), the Congo red agar method, and the crystal violet assay. The majority of the strains (59.7%; 34/57) did not form biofilms according to the crystal violet assay, although the biofilm-associated genes were present in 94...
February 23, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28231455/synthetic-investigation-physicochemical-characterization-and-antibacterial-evaluation-of-ternary-bi-iii-systems-with-hydroxycarboxylic-acid-and-aromatic-chelator-substrates
#16
C M Nday, E Halevas, A Tsiaprazi-Stamou, D Eleftheriadou, A Hatzidimitriou, G Jackson, D Reid, A Salifoglou
Due to its physical and chemical properties, bismuth (Bi(III)) is widely used in the treatment of several gastrointestinal and skin diseases, and infections caused by bacteria. Herein, its known antimicrobial potential was taken into consideration in the synthesis of two new hybrid ternary materials of Bi(III) with the physiological α-hydroxycarboxylic glycolic acid and 1,10-phenanthroline (phen), [Bi2(C2H2O3)2(C2H3O3)(NO3)]n(.) nH2O (1) and [Bi(C12H8N2)(NO3)4](C10H8N4) (2), aiming at improving its antibacterial properties...
February 11, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28229435/design-and-pharmacodynamics-of-recombinant-nz2114-histidine-mutants-with-improved-activity-against-methicillin-resistant-staphylococcus-aureus
#17
Huixian Chen, Ruoyu Mao, Da Teng, Xiumin Wang, Ya Hao, Xingjun Feng, Jianhua Wang
NZ2114 is a promising candidate for therapeutic application owing to its potent activity to Staphylococcus aureus. Our objective was to identify NZ2114 derivatives with improved activity through substitution of His16 and His18 with residues Arginine and Lysine. Eight mutants were designed and expressed in Pichia pastoris X-33 via pPICZαA. Five of them exhibited strong antimicrobial activity against S. aureus at low minimal inhibitory concentrations (MICs) of 0.057-0.454 μM. Among them, H1, H2, and H3 showed ideal pharmacodynamic effects on methicillin-resistant S...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28221909/effect-of-temperature-and-nutrient-concentration-on-survival-of-foodborne-pathogens-in-deciduous-fruit-processing-environments-for-effective-hygiene-management
#18
Stacey Duvenage, Lise Korsten
Temperature and good sanitation practices are important factors for controlling growth of microorganisms. Fresh produce is stored at various temperatures to ensure quality and to prolong shelf life. When foodborne pathogens survive and grow on fresh produce at storage temperatures, then additional control strategies are needed to inactivate these pathogens. The aim of this study was to determine how temperatures associated with deciduous fruit processing and storage facilities (0.5, 4, and 21°C) affect the growth and/or survival of Escherichia coli O157:H7, Listeria monocytogenes , Salmonella enterica subsp...
November 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28214190/biofilm-formation-by-staphylococcus-aureus-isolates-from-a-dental-clinic-in-konya-turkey
#19
Emrah Torlak, Emre Korkut, Ali T Uncu, Yağmur Şener
The ability of Staphylococcus aureus to form biofilm is considered to be a major virulence factor influencing its survival and persistence in both the environment and the host. Biofilm formation in S. aureus is most frequently associated with production of polysaccharide intercellular adhesion by ica operon-encoded enzymes. The present work aimed at evaluating the in vitro biofilm production and presence of the icaA and icaD genes in S. aureus isolates from a dental clinic in Konya, Turkey. The surfaces of inanimate objects were sampled over a period of six months...
February 14, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28207309/multilocus-sequence-typing-and-staphylococcal-protein-a-typing-revealed-novel-and-diverse-clones-of-methicillin-resistant-staphylococcus-aureus-in-seafood-and-the-aquatic-environment
#20
V Murugadas, C Joseph Toms, Sara A Reethu, K V Lalitha
Methicillin-resistant Staphylococcus aureus (MRSA) has been a global health concern since the 1960s, and isolation of this pathogen from food-producing animals has been increasing. However, little information is available on the prevalence of MRSA and its clonal characteristics in seafood and the aquatic environment. In this study, 267 seafood and aquatic environment samples were collected from three districts of Kerala, India. Staphylococcal protein A (spa) typing and multilocus sequence typing (MLST) was performed for 65 MRSA strains isolated from 20 seafood and aquatic environment samples...
February 16, 2017: Journal of Food Protection
keyword
keyword
69322
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"