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https://www.readbyqxmd.com/read/29055204/influence-of-bizerte-city-wastewater-treatment-plant-wwtp-on-abundance-and-antibioresistance-of-culturable-heterotrophic-and-fecal-indicator-bacteria-of-bizerte-lagoon-tunisia
#1
Mariem Souissi, Rached Laabidi, Patricia Aissa, Olivier Pringault, Olfa Ben Said
The waste water treatment plant (WWTP) of the city of Bizerte concentrates different types of chemical and biological pollutants in the Bizerte lagoon (Tunisia). Considering four upstream and downstream WWTP discharge stations, seventy nine, culturable bacterial strains were isolated and identified from water and sediment as fecal coliforms, fecal streptococci, pathogenic staphylococci and non-enterobacteriacea. Fecal coliforms were most abundant (2.5 10(5) bacteria/mg) in sediment of WWTP discharge. Leuconostoc spp (23...
October 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29055131/case-report-of-staphylococcus-epidermidis-maternal-sepsis-and-chorioamnionitis-following-fetoscopy
#2
Gabriel Levin, Roy Zigron
A patient aged 28 years (gravida 5 para 3) who was at 21 weeks of a monochorionic diamniotic pregnancy, underwent fetoscopic laser ablation of placental blood vessels owing to stage-3 twin-to-twin transfusion syndrome (Figure 1). Ultrasonography on post-operative day 1 demonstrated marked improvement of both embryo urinary bladder filling and Doppler blood flow measurements. This article is protected by copyright. All rights reserved.
October 21, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29054874/extracellular-polymeric-matrix-production-and-relaxation-under-fluid-shear-and-mechanical-pressure-in-staphylococcus-aureus-biofilms
#3
Jiapeng Hou, Deepak H Veeregowda, Betsy van de Belt-Gritter, Henk J Busscher, Henny C van der Mei
The viscoelasticity of a biofilm's EPS (extracellular-polymeric-substance) matrix conveys protection against mechanical challenges, but adaptive responses of biofilm inhabitants to produce EPS are not well known. Here, we compare the response of a biofilm of an EPS producing (ATCC 12600) and non-EPS producing (5298) Staphylococcus aureus strain to fluid shear and mechanical challenge. Confocal-Laser-Scanning-Microscopy confirmed absence of calcofluorwhite-stainable EPS in biofilms of S. aureus 5298. ATR-FTIR spectroscopy combined with tribometry indicated that the polysaccharide production per bacterium in the initial adhering layer was higher during growth at high shear than at low shear and this increased EPS production extended to entire biofilms, as indicated by tribometrically measured coefficients of friction (CoF)...
October 20, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29054827/characterization-of-a-double-wap-domain-containing-protein-from-the-red-swamp-crayfish-procambarus-clarkii
#4
Hong-Wei Zhang, Xin Man, Yue Wang, Qi-Sheng Song, David Stanley, Kai-Min Hui, Xiao-Wen Zhang
Crustaceans express multiple whey acidic protein (WAP) domain containing proteins which are components of host immunity. In the present study, a new double WAP domain containing protein was identified from red swamp crayfish Procambarus clarkii, designated Pc-DWD. The ORF is 387 bp, encoding 128 amino acids consisting of signal peptide of 18 residues, and two tandem WAP domains of 38 and 44 residues. Multiple alignment indicates the presence of conserved motifs in both WAP domains, and phylogenetic analysis shows that Pc-DWD is a new member of the type-IV crustin family...
October 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29054550/-mlva-analysis-and-virulence-profile-of-community-acquired-methicillin-resistant-staphylococcus-aureus-causing-infections-in-paraguayan-children
#5
Fátima Rodríguez Acosta, Wilma D Basualdo Acuña, Héctor Castro, Ana Campuzano, María L Macchi, Juana Ortellado de Canese, Patricia Almada, Mónica Rodríguez, Lorena Grau, Gladys Velázquez, Carmen Espínola, Gloria C Samudio Domínguez, Gloria Gómez, Letizia Carpinelli, Rosa M Guillén Fretes
Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) is one of the first causes of skin and soft tissue infections, and can also produce severe diseases such as osteomyelitis and pneumonia. The aim of this descriptive study was to determine the SCCmec type and virulence profile and to study the genetic diversity by MLVA analysis of 21 CA-MRSA isolates that infected Paraguayan children in 2010. The SCCmec type and virulence factors were performed by PCR and genetic diversity by MLVA (multiple locus variable analysis)...
October 17, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/29054522/antimicrobial-activity-of-a-newly-identified-kazal-type-serine-proteinase-inhibitor-cckpi1-from-the-jellyfish-cyanea-capillata
#6
Yonghong Zhou, Guoyan Liu, Xi Cheng, Qianqian Wang, Bo Wang, Beilei Wang, Hui Zhang, Qian He, Liming Zhang
In this study, we reported a jellyfish-derived Kazal-type serine protease inhibitor, named CcKPI1, from Cyanea capillata. CcKPI1 has a calculated molecular mass of 19.02kDa and contains three typical Kazal domains. Soluble recombinant CcKPI1 (rCcKPI1) was successfully expressed and purified. rCcKPI1 exhibited significant inhibitory activities against elastase, subtilisin A and proteinase K, but not against trypsin or chymotrypsin. Kinetic studies showed that all of the inhibitory effects of rCcKPI1 were competitive, indicating that it may be a microbial serine protease inhibitor and can exhibit antimicrobial activity...
October 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29054003/adhesion-force-sensing-and-activation-of-a-membrane-bound-sensor-to-activate-nisin-efflux-pumps-in-staphylococcus-aureus-under-mechanical-and-chemical-stresses
#7
Vera Carniello, Akshay K Harapanahalli, Henk J Busscher, Henny C van der Mei
Nisin-associated-sensitivity-response-regulator (NsaRS) in Staphylococcus aureus is important for its adhesion to surfaces and resistance against antibiotics, like nisin. NsaRS consists of an intra-membrane-located sensor NsaS and a cytoplasmatically-located response-regulator NsaR, which becomes activated upon receiving phosphate groups from the intra-membrane-located sensor. HYPOTHESIS: The intra-membrane location of the NsaS sensor leads us to hypothesize that the two-component NsaRS system not only senses "chemical" (nisin) but also "mechanical" (adhesion) stresses to modulate efflux of antibiotics from the cytoplasm...
October 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29053557/bacterial-keratitis-isolated-organisms-and-antibiotic-resistance-patterns-in-san-francisco
#8
Michelle Y Peng, Vicky Cevallos, Stephen D McLeod, Thomas M Lietman, Jennifer Rose-Nussbaumer
PURPOSE: Understanding the spectrum of pathogens in a given geographic region is important when deciding on empiric antibiotic therapy. In this study, we evaluate the spectrum of bacterial organisms cultured from corneal samples and their antibiotic sensitivities to guide initial treatment of keratitis. METHODS: We performed a retrospective case review of cultures from suspected infectious keratitis cases at the Francis I. Proctor Foundation, University of California, San Francisco, from 1996 through 2015...
October 17, 2017: Cornea
https://www.readbyqxmd.com/read/29052878/staphylococcus-aureus-and-psoriasis-time-for-a-re-appraisal
#9
R Hay
No abstract text is available yet for this article.
October 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/29052797/suppressive-antibiotic-therapy-with-oral-tetracyclines-for-prosthetic-joint-infections-a-retrospective-study-of-78-patients
#10
M Pradier, O Robineau, A Boucher, M Titecat, N Blondiaux, M Valette, C Loïez, E Beltrand, S Nguyen, H Dézeque, H Migaud, Eric Senneville
PURPOSE: This study aimed at describing the use of oral cyclines (i.e., doxycycline and minocycline) as suppressive antibiotic therapy (SAT) in patients with periprosthetic joint infections (PJIs). METHODS: Medical charts of all patients with surgical revisions for PJIs who were given cycline-based SAT because of a high failure of various origins were reviewed. Data regarding tolerability and effectiveness of cycline-based SAT were analysed. RESULTS: Seventy-eight patients of mean age 64 ± 17 years received cycline-base SAT in the period from January 2006 to January 2014...
October 20, 2017: Infection
https://www.readbyqxmd.com/read/29052523/longitudinal-study-of-staphylococcus-aureus-colonization-and-infection-in-a-cohort-of-swine-veterinarians-in-the-united-states
#11
Jisun Sun, My Yang, Srinand Sreevatsan, Jeffrey B Bender, Randall S Singer, Todd P Knutson, Douglas G Marthaler, Peter R Davies
BACKGROUND: People working with pigs are at elevated risk of harboring methicillin resistant S. aureus (MRSA) in their nose, which is attributable to occupational exposure to animals harboring livestock adapted S. aureus. To obtain insight into the biological nature of occupationally related nasal culture positivity, we conducted a longitudinal study of 66 swine veterinarians in the USA. METHODS: The study cohort resided in 15 US states and worked predominantly with swine...
October 19, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29052452/what-is-the-role-of-staphylococcus-aureus-and-herpes-virus-infections-in-the-pathogenesis-of-atopic-dermatitis
#12
Simone Saintive, Eliane Abad, Dennis de C Ferreira, Mayra Stambovsky, Fernanda S Cavalcante, Lucio S Gonçalves, Fabio Vidal, Katia Rn Dos Santos
Atopic dermatitis (AD) is a chronic, relapsing disease. Genetic, environmental and immunological factors are involved in its pathophysiology. Individuals with AD have an increased predisposition to colonization and/or infection of the skin by various pathogens, especially Staphylococcus aureus and herpes simplex virus. The composition of their skin microbiome is also different, and changes during flares. The disease severity can be related to the degree of colonization by S. aureus. In addition, the presence of this bacterial species can predispose the host to more severe and disseminated viral infections...
October 20, 2017: Future Microbiology
https://www.readbyqxmd.com/read/29052232/different-functional-genes-of-upper-airway-microbiome-associated-with-natural-course-of-childhood-asthma
#13
Bong-Soo Kim, Eun Lee, Min-Jung Lee, Mi-Jin Kang, Jisun Yoon, Hyun-Ju Cho, Jaehyun Park, Sungho Won, So Yeon Lee, Soo-Jong Hong
BACKGROUND: Microbial colonization of the airway plays a role in the pathogenesis of asthma; however, the effect of the upper airway microbiome on childhood asthma is not fully understood. We analyzed the metagenome of airway microbiome to understand the associated role of upper airway microbiome with the natural course of childhood asthma. METHODS: Nasopharyngeal swabs were collected from children with asthma, those in asthma remission, and control groups. High-throughput sequencing was used to examine the structure and functional dynamics of the airway microbiome with respect to asthma phenotypes...
October 20, 2017: Allergy
https://www.readbyqxmd.com/read/29052060/magnetic-poly-n-isopropylacrylamide-nanocomposites-effect-of-preparation-method-on-antibacterial-properties
#14
Nhung H A Nguyen, Mohamed S A Darwish, Ivan Stibor, Pavel Kejzlar, Alena Ševců
The most challenging task in the preparation of magnetic poly(N-isopropylacrylamide) (Fe3O4-PNIPAAm) nanocomposites for bio-applications is to maximise their reactivity and stability. Emulsion polymerisation, in situ precipitation and physical addition were used to produce Fe3O4-PNIPAAm-1, Fe3O4-PNIPAAm-2 and Fe3O4-PNIPAAm-3, respectively. Their properties were characterised using scanning electron microscopy (morphology), zeta-potential (surface charge), thermogravimetric analysis (stability), vibrating sample magnetometry (magnetisation) and dynamic light scattering...
October 19, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29051689/detection-of-newly-defined-superantigenic-toxin-genes-and-coagulase-gene-polymorphism-in-staphylococcus-aureus-isolates
#15
Bareq A Al-Ajealy, Maysa S M Al-Shukri, Hassan S Al-Jumaily
The current study aims to use coagulase (coa) polymorphism gene to identify Staphylococcus aureus isolated from stool samples, evaluate the efficiency of these methods in discriminating variable strains, and compare these subtypes with antibiotypes. A total of 100 specimens were collected from patients in Babylon province, Iraq, between July 2016 and September 2016. Twenty S. aureus strains were isolated and identified using standard laboratory microbiological tests. The bacterial isolates were then examined by coa gene restriction fragment length polymorphism genotyping...
October 2017: Reviews in Medical Microbiology: a Journal of the Pathological Society of Great Britain and Ireland
https://www.readbyqxmd.com/read/29051668/culture-broth-of-ganoderma-lucidum-exhibited-antioxidant-antibacterial-and-%C3%AE-amylase-inhibitory-activities
#16
Rakrudee Sarnthima, Saranyu Khammaung, Piyawan Sa-Ard
Culture broth of Ganoderma lucidum was determined for antioxidant, antibacterial and α-amylase inhibitory activities. The culture broth contained protein as determined by Bradford method equaled to 0.2 mg/ml and total phenol content as 0.078 mg GAE/mg protein (0.557 mg GAE/g extract). It exhibited radicals scavenging activities against ABTS(+·) and DPPH(·) radicals with a half maximal inhibitory concentration (IC50) less than 1.70 ± 0.02 and 2.28 ± 0.02 µg protein/ml, respectively and reducing power equaled to 4...
October 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29051644/chemical-compositions-antioxidant-and-antimicrobial-properties-of-ziziphora-clinopodioides-lam-essential-oils-collected-from-different-parts-of-iran
#17
Yasser Shahbazi
The aims of the present study were to investigate chemical compositions, antioxidant and antimicrobial properties of Ziziphora clinopodioides essential oils (ZEOs) collected from four provinces in western Iran (Ilam, Lorestan, Kermanshah and Kurdestan). Carvacrol was the most abundant constituent in the flower, stem and leaf oil samples of Ilam, Lorestan and Kermanshah regions by 73.12-74.29%, 66.47-66.89% and 65.11-65.32%, respectively. The most abundant components in Kurdestan sample were thymol (55.32-55...
October 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29051609/liquid-infused-nitric-oxide-releasing-linorel-silicone-for-decreased-fouling-thrombosis-and-infection-of-medical-devices
#18
Marcus J Goudie, Jitendra Pant, Hitesh Handa
Recent reports on liquid-infused materials have shown promise in creating ultra-low fouling surfaces, but are limited in their ability to prevent bacterial proliferation and prevent platelet activation in blood-contacting applications. In this work, a liquid-infused nitric oxide-releasing (LINORel) material is created by incorporating the nitric oxide (NO) donor S-nitroso-acetylpenicillamine (SNAP) and silicone oil in commercial medical grade silicone rubber tubing through a solvent swelling process. This combination provides several key advantages over previous NO-releasing materials, including decreased leaching of NO donor, controlled release of NO, and maintenance of ultra-low fouling property of liquid-infused materials...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29051260/draft-genome-sequence-of-a-community-acquired-methicillin-resistant-staphylococcus-aureus-usa300-isolate-from-a-river-sample
#19
Sarah Lepuschitz, Robert Mach, Burkhard Springer, Franz Allerberger, Werner Ruppitsch
The increasing emergence of multiresistant bacteria in health care settings in the community and in the environment represents a major health threat worldwide. Here, we report the draft genome sequence of a community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) USA300 isolate (W1) from a small river in southern Austria.
October 19, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29051244/draft-genome-sequences-of-one-methicillin-sensitive-and-seven-methicillin-resistant-staphylococcus-aureus-sequence-type-5-isolates-obtained-in-california
#20
Samantha J Hau, Darrell O Bayles, David P Alt, Tracy L Nicholson
Staphylococcus aureus is a commensal bacterium of humans that can cause a spectrum of diseases. An isolate's capacity to cause disease is partially attributed to the acquisition of novel mobile genetic elements. This report provides the draft genome sequence of one methicillin-susceptible and seven methicillin-resistant clinical human S. aureus isolates.
October 19, 2017: Genome Announcements
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