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https://www.readbyqxmd.com/read/29793044/isolation-of-ferritin-and-its-interaction-with-bmnpv-in-the-silkworm-bombyx-mori
#1
Dong-Qiong Fei, Hai-Zhong Yu, Jia-Ping Xu, Shang-Zhi Zhang, Jie Wang, Bing Li, Li-Ang Yang, Pei Hu, Xin Xu, Kang Zhao, Toufeeq Shahzad
Ferritin is a ubiquitous iron storage protein that plays an important role in host defence against pathogen infections. In the present study, native ferritin was isolated from the hemolymph of Bombyx mori using native-polyacrylamide gel electrophoresis (native-PAGE) and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). The results revealed that ferritin consisted of two subunits, designated as BmFerHCH and BmFerLCH. Previously integrated previous transcriptome and iTRAQ data showed that the two subunits were down-regulated in resistant silkworm strain BC9 and there was no obvious change in the expression levels of the subunits in susceptible silkworm strain P50 after BmNPV infection...
May 9, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29792971/impact-of-active-surveillance-and-infection-control-measures-on-carbapenem-resistant-gram-negative-bacterial-colonization-and-infections-in-intensive-care
#2
T Karampatakis, K Tsergouli, E Iosifidis, C Antachopoulos, A Karapanagiotou, A Karyoti, N Gritsi-Gerogianni, A Tsakris, E Roilides
BACKGROUND: Carbapenem-resistant Gram-negative bacteria (CRGNB) infections constitute a global threat for critically ill patients and the outcome of their hospitalization. Early identification of CRGNB through rectal surveillance cultures and routine infection control measures including contact precautions, use of appropriate disinfectants, staff education on cleaning, and hand hygiene may reduce the dissemination of CRGNB. AIM: To assess the impact of enhanced infection control measures on CRGNB infections in a nine-bed polyvalent intensive care unit in a tertiary level hospital in an endemic area...
May 21, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29792343/plasma-initiated-graft-polymerization-as-an-immobilization-platform-for-metal-free-russian-propolis-ethanol-extracts-designed-specifically-for-biomaterials
#3
Ashwin Ambi, Carolina Vera, Nisharg Parikh, Naidel Perez, Anthony Lopez Rojas, Sanket Kumar, Christopher Stradford, Katherine Borbon, Julia Bryan, Christian Traba
The antibacterial and anti-biofilm activities of propolis have been intensively reported. However, the application of this folk remedy as a means to prevent biomedical implant contamination has yet to be completely evaluated. In response to the significant resistant and infectious attributes of biofilms, biomaterials engineered to possess specific chemical and physical properties were immobilized with metal free Russian propolis ethanol extracts (MFRPEE), a known antibacterial agent. The results obtained from this study begin to examine the application of MFRPEE as a novel alternative method for the prevention of medical and biomedical implant infections...
May 24, 2018: Biofouling
https://www.readbyqxmd.com/read/29791511/caspase-11-dependent-pyroptosis-of-lung-epithelial-cells-protects-from-melioidosis-while-caspase-1-mediates-macrophage-pyroptosis-and-production-of-il-18
#4
Jinyong Wang, Manoranjan Sahoo, Louis Lantier, Jonathan Warawa, Hector Cordero, Kelly Deobald, Fabio Re
Infection with Burkholderia pseudomallei or B. thailandensis triggers activation of the NLRP3 and NLRC4 inflammasomes leading to release of IL-1β and IL-18 and death of infected macrophages by pyroptosis, respectively. The non-canonical inflammasome composed of caspase-11 is also activated by these bacteria and provides protection through induction of pyroptosis. The recent generation of bona fide caspase-1-deficient mice allowed us to reexamine in a mouse model of pneumonic melioidosis the role of caspase-1 independently of caspase-11 (that was also absent in previously generated Casp1-/- mice)...
May 23, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29790810/a-review-of-novel-technologies-and-techniques-associated-with-identification-of-bloodstream-infection-aetiologies-and-rapid-antimicrobial-genotypic-and-quantitative-phenotypic-determination
#5
Stephen Poole, Stephen P Kidd, Kordo Saeed
Introduction The antimicrobial aspect of management of patients with blood stream infections (BSI) and sepsis is time critical. In an era of increasing antimicrobial resistance, rapid detection and identification of bacteria with antimicrobial susceptibility is crucial to direct therapy early in the course of illness. Molecular techniques offer a potential solution to this. Areas covered In the present review the authors have discussed a number of novel solutions utilising a variety of molecular techniques for pathogen detection, identification and antimicrobial susceptibility...
May 23, 2018: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29790084/cloning-and-expression-of-nlpa-gene-as-dna-vaccine-candidate-against-acinetobacter-baumannii
#6
Rassoul Hashemzehi, Abbas Doosti, Mohammad Kargar, Mojtaba Jaafarinia
Acinetobacter baumannii is one of the highly antibiotic-resistant bacteria that cause infections with high rate of death. This bacterium is one the common causes of infection worldwide leading to endemic and epidemic nosocomial infections. Despite many efforts, there is no effective vaccine against A. baumannii. As NlpA is one of the important antigenic factors in biogenesis of outer membrane vesicles, and OMV-based reported vaccines in A. baumannii stimulated the immune responses, this study was aimed to clone and express nlpA gene in eukaryotic HDF cells and evaluate the induced immunization following the administration of resulting construct as DNA vaccine in BALB/c mice...
May 22, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29790058/the-synergistic-effect-of-organic-acids-phytochemicals-and-a-permeabilizing-complex-reduces-salmonella-typhimurium-1-4-5-12-i-shedding-in-pigs
#7
Ruggeri Jessica, Foresti Fabio, Pavesi Roberta, Terrini Alessia, Giudici Francesca, Padoan Diego, Corradi Attilio, Ossiprandi Maria Cristina, Pasquali Paolo, Alborali Giovanni Loris
Salmonella Typhimurium (including S.Typhimurium 1,4,[5],12:i-) and other enteric pathogens cause acute infection in pigs during the weaning stage, often evolving into chronic infections responsible for the introduction of zoonotic bacteria into the slaughterhouse and thus determining carcass contamination. In addition to being zoonotic hazards, these pathogens are responsible for economic losses in affected farms. Traditionally, antibiotic treatments have been largely administered in order to reduce the infection burden but it favored, as a direct consequence, an increase in the number of multi-drug resistance strains...
May 22, 2018: Veterinary Research Communications
https://www.readbyqxmd.com/read/29789467/the-present-and-future-of-whole-genome-sequencing-wgs-and-whole-metagenome-sequencing-wms-for-surveillance-of-antimicrobial-resistant-microorganisms-and-antimicrobial-resistance-genes-across-the-food-chain
#8
REVIEW
Elena A Oniciuc, Eleni Likotrafiti, Adrián Alvarez-Molina, Miguel Prieto, Jesús A Santos, Avelino Alvarez-Ordóñez
Antimicrobial resistance (AMR) surveillance is a critical step within risk assessment schemes, as it is the basis for informing global strategies, monitoring the effectiveness of public health interventions, and detecting new trends and emerging threats linked to food. Surveillance of AMR is currently based on the isolation of indicator microorganisms and the phenotypic characterization of clinical, environmental and food strains isolated. However, this approach provides very limited information on the mechanisms driving AMR or on the presence or spread of AMR genes throughout the food chain...
May 22, 2018: Genes
https://www.readbyqxmd.com/read/29788910/infection-with-high-proportion-of-multidrug-resistant-bacteria-in-conflict-related-injuries-is-associated-with-poor-outcomes-and-excess-resource-consumption-a-cohort-study-of-syrian-patients-treated-in-jordan
#9
Andreas Älgå, Sidney Wong, Muhammad Shoaib, Kalle Lundgren, Christian G Giske, Johan von Schreeb, Jonas Malmstedt
BACKGROUND: Armed conflicts are a major contributor to injury and death globally. Conflict-related injuries are associated with a high risk of wound infection, but it is unknown to what extent infection directly relates to sustainment of life and restoration of function. The aim of this study was to investigate the outcome and resource consumption among civilians receiving acute surgical treatment due to conflict-related injuries. Patients with and without wound infections were compared...
May 22, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29788037/mycoplasma-pneumoniae-among-children-hospitalized-with-community-acquired-pneumonia
#10
Preeta K Kutty, Seema Jain, Thomas H Taylor, Anna M Bramley, Maureen H Diaz, Krow Ampofo, Sandra R Arnold, Derek J Williams, Kathryn M Edwards, Jonathan A McCullers, Andrew T Pavia, Jonas M Winchell, Stephanie J Schrag, Lauri A Hicks
Background: The burden and epidemiology of Mycoplasma pneumoniae (Mp) among U.S. children (<18 years) hospitalized with community-acquired pneumonia (CAP) are poorly understood. Methods: In the Etiology of Pneumonia in the Community (EPIC) study, we prospectively enrolled 2254 children hospitalized with radiographically-confirmed pneumonia from January 2010-June 2012 and tested nasopharyngeal/oropharyngeal swabs for Mp using real-time polymerase chain reaction (PCR)...
May 17, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29786960/the-atomic-resolution-structure-of-a-class-c-%C3%AE-lactamase-and-of-its-complex-with-avibactam
#11
Stefano Mangani, Cecilia Pozzi, Flavio Di Pisa, Filomena De Luca, Manuela Benvenuti, Jean-Denis Docquier
β-lactamases (BLs) are important antibiotic resistance determinants that significantly compromise the efficacy of valuable β-lactam antibacterial drugs. For that reason, combinations with β-lactamase inhibitor were developed. Avibactam is the first non-β-lactam BL inhibitor introduced in clinical practice. Ceftazidime-avibactam represents one of the few last-resort antibiotics available for the treatment of infections caused by near pandrug-resistant bacteria. TRU-1 is a chromosomally-encoded AmpC-type BL of Aeromonas enteropelogenes, related to the FOX-type BLs and constitutes a good model for class C BLs...
May 22, 2018: ChemMedChem
https://www.readbyqxmd.com/read/29785663/enterobacteria-and-host-resistance-to-infection
#12
REVIEW
Eugene Kang, Alanna Crouse, Lucie Chevallier, Stéphanie M Pontier, Ashwag Alzahrani, Navoun Silué, François-Xavier Campbell-Valois, Xavier Montagutelli, Samantha Gruenheid, Danielle Malo
Enterobacteriaceae are a large family of Gram-negative, non-spore-forming bacteria. Although many species exist as part of the natural flora of animals including humans, some members are associated with both intestinal and extraintestinal diseases. In this review, we focus on members of this family that have important roles in human disease: Salmonella, Escherichia, Shigella, and Yersinia, providing a brief overview of the disease caused by these bacteria, highlighting the contribution of animal models to our understanding of their pathogenesis and of host genetic determinants involved in susceptibility or resistance to infection...
May 21, 2018: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/29785628/gut-associated-bacteria-of-helicoverpa-zea-indirectly-trigger-plant-defenses-in-maize
#13
Jie Wang, Mingyu Yang, Yuanyuan Song, Flor E Acevedo, Kelli Hoover, Rensen Zeng, Gary W Felton
Insect-associated microbes can contribute to the physiological and ecological functions of insects. Despite a few examples in beetles and piercing-sucking insects, the varied mechanisms of how insect-associated bacteria mediate plant-insect interactions are still not fully understood. The polyphagous herbivore Helicoverpa zea is a major agricultural pest that harbors certain microbes in their digestive systems. Enterobacter ludwigii is one of the gut-associated bacteria identified from field-collected caterpillars, and it has been shown to indirectly induce defenses in the dicot plant tomato by triggering the biosynthesis of salivary elicitors, but there are no clear mechanisms to show how gut microbes alter these salivary cues and how a different host plant responds to these inducible elicitors...
May 22, 2018: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29785215/mycobacteriosis-and-tuberculosis-laboratory-diagnosis
#14
REVIEW
Davood Azadi, Tahereh Motallebirad, Kazem Ghaffari, Hasan Shojaei
Background: Tuberculosis is one of the most important infectious diseases that has claimed its victims throughout much of known human history. With Koch's discovery of the tubercle bacillus as the etiologic agent of the disease, his sanitary and hygienic measures, which were based on his discovery and the development of a vaccine against tuberculosis by Albert Calmette and Camille Guérin in 1921, an attenuated Mycobacterium bovis strain, bacilli Calmette-Guérin (BCG), and the discovery of the first antibiotic against tuberculosis, streptomycin by Selman Waksman in 1943, soon led to the opinion that appropriate control measures had become available for tuberculosis and it had been assumed that the disease could ultimately be eradicated...
2018: Open Microbiology Journal
https://www.readbyqxmd.com/read/29785131/epidemiology-susceptibility-and-risk-factors-for-acquisition-of-mdr-xdr-gram-negative-bacteria-among-kidney-transplant-recipients-with-urinary-tract-infections
#15
Xiuhong Yuan, Taohua Liu, Di Wu, Qiquan Wan
Background: Multiple drug resistant/extensively drug resistant (MDR/XDR) Gram-negative urinary tract infections (UTIs) represent a growing threat to kidney transplant recipients. This retrospective study aimed to assess the incidence and microbiological profile of MDR/XDR Gram-negative UTIs, to identify drug susceptibility of MDR/XDR bacteria, and to determine the potential risk factors for MDR/XDR UTIs in kidney recipients. Materials and methods: During the study period, 1569 patients underwent consecutive kidney transplantation in two transplantation centers...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29784886/-legionella-pneumophila-is-directly-sensitive-to-2-deoxyglucose-phosphate-via-its-uhpc-transporter-but-is-indifferent-to-shifts-in-host-cell-glycolytic-metabolism
#16
Jordan V Price, Kallie Jiang, Abigail Galantowicz, Alana Freifeld, Russell E Vance
Toll-like receptor stimulation induces a pronounced shift to increased glycolytic metabolism in mammalian macrophages. We observed that bone marrow-derived macrophages (BMMs) increase glycolysis in response to infection with Legionella pneumophila ( L. pneumophila ), but the role of host macrophage glycolysis on intracellular L. pneumophila replication is not currently understood. Treatment with 2-deoxyglucose (2DG) blocks L. pneumophila replication in mammalian macrophages but has no effect on bacteria grown in broth...
May 21, 2018: Journal of Bacteriology
https://www.readbyqxmd.com/read/29784578/quantitative-study-about-the-role-of-environmental-conditions-in-the-survival-capability-of-multidrug-resistant-bacteria
#17
Adrienn Hanczvikkel, Ákos Tóth
BACKGROUND: Healthcare-associated infections (HAIs) caused by multidrug-resistant bacteria (MDRB) are of global concern and hospital textiles can contribute to their transmission. MDRB are able to survive on textiles for more than enough time to spread in the environment. Some studies summarized the effect of environmental factors on the duration of bacterial survival, but it remained an open question how these factors influence the quantity of surviving bacteria in a period of a few days, which is relevant from the perspective of HAIs...
May 18, 2018: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29781552/topical-rifampin-powder-for-orthopaedic-trauma-part-i-rifampin-powder-reduces-recalcitrant-infection-in-a-delayed-treatment-musculoskeletal-trauma-model
#18
Stefanie M Shiels, David J Tennent, Joseph C Wenke
Open fractures become infected despite meticulous debridement and care. Locally applied antibiotics, commonly embedded in polymethylmethacrylate, deliver high doses of drug directly to the fracture site. Direct application of antibiotic powder, which is being applied prophylactically in spine surgery, is a recent interest in the trauma sector, where bacterial biofilms are more prevalent. Traditional antibiotics, such as vancomycin, are poor performers against bacterial biofilms thus are ineffective in delayed treatment...
May 21, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29780364/antibacterial-efficacy-of-polysaccharide-capped-silver-nanoparticles-is-not-compromised-by-acrab-tolc-efflux-pump
#19
Mitali Mishra, Satish Kumar, Rakesh K Majhi, Luna Goswami, Chandan Goswami, Harapriya Mohapatra
Antibacterial therapy is of paramount importance in treatment of several acute and chronic infectious diseases caused by pathogens. Over the years extensive use and misuse of antimicrobial agents has led to emergence of multidrug resistant (MDR) and extensive drug resistant (XDR) pathogens. This drastic escalation in resistant phenotype has limited the efficacy of available therapeutic options. Thus, the need of the hour is to look for alternative therapeutic approaches to mitigate healthcare concerns caused due to MDR bacterial infections...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29780362/characterization-and-genomic-study-of-phage-vb_ecos-b2-infecting-multidrug-resistant-escherichia-coli
#20
Yue Xu, Xinyan Yu, Yu Gu, Xu Huang, Genyan Liu, Xiaoqiu Liu
The potential of bacteriophage as an alternative antibacterial agent has been reconsidered for control of pathogenic bacteria due to the widespread occurrence of multi-drug resistance bacteria. More and more lytic phages have been isolated recently. In the present study, we isolated a lytic phage named vB_EcoS-B2 from waste water. VB_EcoS-B2 has an icosahedral symmetry head and a long tail without a contractile sheath, indicating that it belongs to the family Siphoviridae . The complete genome of vB_EcoS-B2 is composed of a circular double stranded DNA of 44,283 bp in length, with 54...
2018: Frontiers in Microbiology
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