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https://www.readbyqxmd.com/read/29433205/effect-of-preliminary-stresses-on-the-resistance-of-escherichia-coli-and-staphylococcus-aureus-toward-non-thermal-plasma-ntp-challenge
#1
Xinyu Liao, Jiao Li, Yuanjie Suo, Juhee Ahn, Donghong Liu, Shiguo Chen, Yaqin Hu, Xingqian Ye, Tian Ding
As the development of hurdle technology, cross-protection of various stresses for pathogens posed the potential risk to food safety and public health. This study tried to explore various preliminary stresses including acidity, osmosis, oxidation, heat and cold on the resistance of microbial cells toward the non-thermal plasma (NTP) exposure. The results indicated that short-term (4h) exposure of Staphylococcus aureus and Escherichia coli to acidity, osmosis, oxidation, heat and cold stresses did not lead to the resistance to the subsequent NTP treatment...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29425222/the-safety-and-quality-of-pork-and-poultry-meat-imports-for-the-common-european-market-received-at-border-inspection-post-hamburg-harbour-between-2014-and-2015
#2
Wiebke Jansen, Svenja Woudstra, Anja Müller, Nils Grabowski, Gundela Schoo, Bettina Gerulat, Günter Klein, Corinna Kehrenberg
Though imports of products of animal origin into the European Union (EU) have to comply with legal requirements and quality standards of the community, food consignment rejections at external EU borders have been increasing in recent years. This study explored microbiological metrics according to national target and critical values valid for samples at consumer level of 498 fresh poultry meat and 136 fresh pork filets from consignments subjected to physical checks during clearing at the border inspection post Hamburg harbour between January 2014 and December 2015 with ISO standard methods...
2018: PloS One
https://www.readbyqxmd.com/read/29414740/airborne-microbial-communities-in-the-atmospheric-environment-of-urban-hospitals-in-china
#3
Xin-Lei Gao, Ming-Fei Shao, Qing Wang, Li-Tao Wang, Wen-Yan Fang, Feng Ouyang, Ji Li
Clinically relevant antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) in bioaerosols have become a greater threat to public health. However, few reports have shown that ARB and ARGs were found in the atmosphere. High-throughput sequencing applied to environmental sciences has enhanced the exploration of microbial populations in atmospheric samples. Thus, five nosocomial bioaerosols were collected, and the dominant microbial and pathogenic microorganisms were identified by high-throughput sequencing in this study...
February 2, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29409524/bacterial-and-parasitic-contaminants-of-salad-vegetables-sold-in-markets-in-fako-division-cameroon-and-evaluation-of-hygiene-and-handling-practices-of-vendors
#4
Jane-Francis Tatah Kihla Akoachere, Bertrand Fossi Tatsinkou, Joseph Mbapngong Nkengfack
OBJECTIVE: Increase in awareness of the health benefits of vegetables has resulted in an increase in consumption. Many vegetables are consumed raw to retain the natural taste and heat labile nutrients. The safety of raw vegetables is a great concern. We investigated the bacteriological and parasitological quality of salad vegetables sold in three major markets in Fako Division Cameroon, the hygiene and preservation practices of vendors and determined the antimicrobial sensitivity of bacterial isolates, to provide data that could be used to improve food safety and safeguard public health...
February 6, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29408389/hospital-ownership-a-risk-factor-for-nosocomial-infection-rates
#5
Christin Schröder, Michael Behnke, Christine Geffers, Petra Gastmeier
BACKGROUND: In some countries, a relationship between hospital ownership and the occurrence of healthcare associated infection rates (HCAI) has been described. AIM: To investigate the association between hospital ownership and occurrence of HCAI in Germany. METHODS: Five different components of the German national nosocomial infection surveillance system were analyzed with regard to the influence of hospital ownership in the period 2014-16 (Components for intensive care units (ICUs) with the endpoints ventilator associated pneumonia, central venous catheter associated bloodstream infections, and urinary catheter associated urinary tract infections, surgical site infections (SSI) following hip prosthesis, and colon surgery, meticillin-resistant Staphylococcus aureus (MRSA), Clostridium difficile infections (CDI) and hand rub consumption per 1000 patient days)...
February 2, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29407401/antibiotic-susceptibility-of-methicillin-resistant-staphylococci-mrs-of-food-origin-a-comparison-of-agar-disc-diffusion-method-and-a-commercially-available-miniaturized-test
#6
Laura Buzón-Durán, Rosa Capita, Carlos Alonso-Calleja
Methicillin-resistant staphylococci (MRS) are a major concern to public and animal health. Thirty MRS (Staphylococcus aureus, S. cohnii, S. epidermidis, S. haemolyticus, S. hominis, S. lentus, S. lugdunensis, S. sciuri, and S. xylosus) isolates from meat and poultry preparations were tested for antimicrobial susceptibility to 11 antimicrobials (belonging to seven different categories) of clinical significance using both the standard agar disc diffusion method and a commercially available miniaturized system (Sensi Test Gram-positive)...
June 2018: Food Microbiology
https://www.readbyqxmd.com/read/29403648/bacteriological-profile-and-antibiotic-susceptibility-pattern-of-common-isolates-of-neonatal-sepsis-ho-municipality-ghana-2016
#7
Fortress Yayra Aku, Patricia Akweongo, Kofi Nyarko, Samuel Sackey, Fredrick Wurapa, Edwin Andrew Afari, Donne Kofi Ameme, Ernest Kenu
Background: Globally, 4 million neonates die annually, with one-third of such deaths occurring as a result of infections. In 2011, there were 7.2million deaths in children below 5 years globally, and a proportion of 40% of these deaths occurred in neonates. Sepsis was reported to account for one-third of these deaths. Presently, multidrug antibiotic resistance is rapidly increasing in Neonatal Intensive Care Units (NICUs), particularly in developing countries and poses a threat to public health...
2018: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/29396540/genome-scale-analysis-of-methicillin-resistant-staphylococcus-aureus-usa300-reveals-a-tradeoff-between-pathogenesis-and-drug-resistance
#8
Donghui Choe, Richard Szubin, Samira Dahesh, Suhyung Cho, Victor Nizet, Bernhard Palsson, Byung-Kwan Cho
Staphylococcus aureus infection is a rising public health care threat. S. aureus is believed to have elaborate regulatory networks that orchestrate its virulence. Despite its importance, the systematic understanding of the transcriptional landscape of S. aureus is limited. Here, we describe the primary transcriptome landscape of an epidemic USA300 isolate of community-acquired methicillin-resistant S. aureus. We experimentally determined 1,861 transcription start sites with their principal promoter elements, including well-conserved -35 and -10 elements and weakly conserved -16 element and 5' untranslated regions containing AG-rich Shine-Dalgarno sequence...
February 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29386617/microbial-keratitis-in-corneal-grafts-predisposing-factors-and-outcomes
#9
A C O Okonkwo, W F Siah, H D J Hogg, H Anwar, F C Figueiredo
PurposeTo identify the nature of microbial keratitis in corneal grafts and the clinical outcomes at a tertiary hospital in the United Kingdom.Patients and methodsA retrospective case series of microbial keratitis in corneal grafts at the Royal Victoria Infirmary, Newcastle upon Tyne over a 17-year period (1997-2014).ResultsA total of 759 consecutive corneal grafts were identified from the Cornea Transplantation database. Of these, 59 episodes of microbial keratitis occurred in 41 eyes of 41 patients (5.4%; 19 male, 46...
January 26, 2018: Eye
https://www.readbyqxmd.com/read/29358112/biosensors-for-rapid-and-sensitive-detection-of-staphylococcus-aureus-in-food
#10
REVIEW
Momna Rubab, Hafiz Muhammad Shahbaz, Amin N Olaimat, Deog-Hwan Oh
Foodborne illness outbreaks caused by the consumption of food contaminated with harmful bacteria has drastically increased in the past decades. Therefore, detection of harmful bacteria in the food has become an important factor for the recognition and prevention of problems associated with food safety and public health. Staphylococcus aureus is one of the most commonly isolated foodborne pathogen and it is considered as a major cause of foodborne illnesses worldwide. A number of different methods have been developed for the detection and identification of S...
January 11, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29342216/in-vitro-activity-of-novel-glycopolymer-against-clinical-isolates-of-multidrug-resistant-staphylococcus-aureus
#11
Vidya P Narayanaswamy, Scott A Giatpaiboon, John Uhrig, Paul Orwin, William Wiesmann, Shenda M Baker, Stacy M Townsend
The incidence of multidrug-resistant (MDR) organisms, including methicillin-resistant Staphylococcus aureus (MRSA), is a serious threat to public health. Progress in developing new therapeutics is being outpaced by antibiotic resistance development, and alternative agents that rapidly permeabilize bacteria hold tremendous potential for treating MDR infections. A new class of glycopolymers includes polycationic poly-N (acetyl, arginyl) glucosamine (PAAG) is under development as an alternative to traditional antibiotic strategies to treat MRSA infections...
2018: PloS One
https://www.readbyqxmd.com/read/29328809/methods-for-the-control-of-foodborne-pathogens-in-low-moisture-foods
#12
Alma Fernanda Sánchez-Maldonado, Alvin Lee, Jeffrey M Farber
Low-moisture foods (LMFs) have been defined as those food products with a water activity (aw) less than 0.85 and are generally considered less susceptible to microbial spoilage and the growth of foodborne pathogens. However, in recent years, outbreaks linked to LMFs have increased, with Salmonella spp., Bacillus cereus, Cronobacter sakazakii, Clostridium spp., Escherichia coli O157:H7, non-O157 E. coli, and Staphylococcus aureus being the principal pathogens involved. Because of the new concerns raised as a result of recent outbreaks, new approaches need to be developed to control foodborne pathogens in LMFs...
January 12, 2018: Annual Review of Food Science and Technology
https://www.readbyqxmd.com/read/29321098/spondylodiscitis-diagnosis-and-treatment-options
#13
Christian Herren, Norma Jung, Miguel Pishnamaz, Marianne Breuninger, Jan Siewe, Rolf Sobottke
BACKGROUND: A recent population-based study from Denmark showed that the incidence of spondylodiscitis rose from 2.2 to 5.8 per 100 000 persons per year over the period 1995-2008; the age-standardized incidence in Germany has been estimated at 30 per 250 000 per year on the basis of data from the Federal Statistical Office (2015). The early diagnosis and treatment of this condition are essential to give the patient the best chance of a good outcome, but these are often delayed because it tends to present with nonspecific manifestations, and fever is often absent...
December 25, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29304128/identification-of-a-protective-b-cell-epitope-of-the-staphylococcus-aureus-gapc-protein-by-screening-a-phage-displayed-random-peptide-library
#14
Mengyao Wang, Lu Zhai, Wei Yu, Yuhua Wei, Lizi Wang, Shuo Liu, Wanyu Li, Xiaoting Li, Simiao Yu, Xiaoting Chen, Hua Zhang, Jing Chen, Zhenyue Feng, Liquan Yu, Yudong Cui
The impact of epidemic Staphylococcus aureus (S. aureus) on public health is increasing. Because of the abuse of antibiotics, the antibiotic resistance of S. aureus is increasing. Thus, there is an urgent need to develop new immunotherapies and immunoprophylaxes. Previous studies showed that the GapC protein of S. aureus, which is a surface protein with high glyceraldehyde 3-phosphate dehydrogenase activity, transferrin binding activity, and other biological activities, is highly conserved. GapC induces an effective humoral immune response in vivo...
2018: PloS One
https://www.readbyqxmd.com/read/29303548/silver-incorporated-mussel-inspired-polydopamine-coatings-on-mesoporous-silica-as-an-efficient-nanocatalyst-and-antimicrobial-agent
#15
Yiyan Song, Huijun Jiang, Bangbang Wang, Yan Kong, Jin Chen
To tackle severe environmental pollution, a search for materials by economical and eco-friendly preparations is demanding for public health. In this study, a novel in situ method to form silver nanoparticles under mild conditions was developed using biomimetic reducing agents of polydopamine coated on the rodlike mesoporous silica of SBA-15. The synthesized SBA-15/polydopamine (PDA)/Ag nanocomposites were characterized by a combination of physicochemical and electrochemical methods. 4-Nitrophenol (4-NP) and methylene blue (MB) were used as models for the evaluation of the prepared nanocatalysts of SBA-15/PDA/Ag in which the composite exhibited enhanced catalytic performance toward degrading 4-NP in solution and MB on the membrane, respectively...
January 5, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29301495/cattle-infection-response-network-and-its-functional-modules
#16
Hamid Beiki, Abbas Pakdel, Ardeshir Nejati Javaremi, Ali Masoudi-Nejad, James M Reecy
BACKGROUND: Weighted Gene Co-expression Network analysis, a powerful technique used to extract co-expressed gene pattern from mRNA expression data, was constructed to infer common immune strategies used by cattle in response to five different bacterial species (Escherichia coli, Mycobacterium avium, Mycobacterium bovis, Salmonella and Staphylococcus aureus) and a protozoa (Trypanosoma Congolense) using 604 publicly available gene expression microarrays from 12 cattle infection experiments...
January 5, 2018: BMC Immunology
https://www.readbyqxmd.com/read/29298353/antibacterial-activity-of-antipsychotic-agents-their-association-with-lipid-nanocapsules-and-its-impact-on-the-properties-of-the-nanocarriers-and-on-antibacterial-activity
#17
Hassan Nehme, Patrick Saulnier, Alyaa A Ramadan, Viviane Cassisa, Catherine Guillet, Matthieu Eveillard, Anita Umerska
Bacterial antibiotic resistance is an emerging public health problem worldwide; therefore, new therapeutic strategies are needed. Many studies have described antipsychotic compounds that present antibacterial activity. Hence, the aims of this study were to evaluate the in vitro antibacterial activity of antipsychotics belonging to different chemical families, to assess the influence of their association with lipid nanocapsules (LNCs) on their antimicrobial activity as well as drug release and to study the uptake of LNCs by bacterial cells...
2018: PloS One
https://www.readbyqxmd.com/read/29298099/propidium-monoazide-quantitative-real-time-polymerase-chain-reaction-for-enumeration-of-some-viable-but-nonculturable-foodborne-bacteria-in-meat-and-meat-products
#18
Norhan Khairy Abd El-Aziz, Yasmine Hasanine Tartor, Ahlam Abd El-Aziz Gharib, Ahmed Mohamed Ammar
Foodborne infections due to bacterial pathogens are increasing worldwide. Given the surreptitious nature of viable but nonculturable (VBNC) bacteria, they largely remain a threat to public health and food safety due to their non-detectability through conventional plate count techniques. Hence, species-specific quantitative real-time polymerase chain reaction (PCR) (qPCR) alone and combined with the use of propidium monoazide (PMA) was used along with the plate count method to quantify VBNC Staphylococcus aureus, Bacillus cereus, Clostridium perfringens, and Enterobacteriaceae in fresh and processed meat samples...
January 3, 2018: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29295973/protein-inspired-antibiotics-active-against-vancomycin-and-daptomycin-resistant-bacteria
#19
Mark A T Blaskovich, Karl A Hansford, Yujing Gong, Mark S Butler, Craig Muldoon, Johnny X Huang, Soumya Ramu, Alberto B Silva, Mu Cheng, Angela M Kavanagh, Zyta Ziora, Rajaratnam Premraj, Fredrik Lindahl, Tanya A Bradford, June C Lee, Tomislav Karoli, Ruby Pelingon, David J Edwards, Maite Amado, Alysha G Elliott, Wanida Phetsang, Noor Huda Daud, Johan E Deecke, Hanna E Sidjabat, Sefetogi Ramaologa, Johannes Zuegg, Jason R Betley, Andrew P G Beevers, Richard A G Smith, Jason A Roberts, David L Paterson, Matthew A Cooper
The public health threat posed by a looming 'post-antibiotic' era necessitates new approaches to antibiotic discovery. Drug development has typically avoided exploitation of membrane-binding properties, in contrast to nature's control of biological pathways via modulation of membrane-associated proteins and membrane lipid composition. Here, we describe the rejuvenation of the glycopeptide antibiotic vancomycin via selective targeting of bacterial membranes. Peptide libraries based on positively charged electrostatic effector sequences are ligated to N-terminal lipophilic membrane-insertive elements and then conjugated to vancomycin...
January 2, 2018: Nature Communications
https://www.readbyqxmd.com/read/29286008/update-on-the-main-mdr-pathogens-prevalence-and-treatment-options
#20
Silvano Esposito, Giuseppe De Simone
In recent years the proportion of multi-drug resistance (MDR) among the bacterial pathogens causing infections, particularly those acquired in healthcare settings, has risen worryingly worldwide. It poses a serious public health threat as the multiple patterns of resistance limit the effective treatment options for such infections. Although many bacterial species have developed reduced susceptibility to a wide array of antimicrobial molecules, a particular group of pathogens acronymically referred to as ESKAPE (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and Enterobacter spp...
December 1, 2017: Le Infezioni in Medicina
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