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https://www.readbyqxmd.com/read/29149747/analysis-of-effect-of-particles-on-cake-layer-compressibility-during-ultrafiltration-of-upflow-biological-activated-carbon-effluent
#1
Lu Ao, Wenjun Liu, Minglu Zhang, Xiaomao Wang
Three different hollow-fibre ultrafiltration (UF) membranes were applied to treat upflow biological activated carbon (UBAC) effluent to determine the characteristics of membrane biofouling by microorganisms and particles. At the beginning of filtration, the cake layer formed on the membrane was loose and highly compressible, and the trans-membrane pressure (TMP) rapidly increased. When compressed to a certain extent, cake layer with low compressibility was formed by the accumulated particles and resulted in slower TMP increment...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29149629/development-and-application-of-rti-pcr-method-for-common-food-pathogen-presence-and-quantity-in-beef-sheep-and-chicken-meat
#2
Ismail Akyol
Two different RTi-PCR protocol were designed and quantifications were validated by using various amounts of DNA. Multiplex AG(R)1 and AG(R)2 RTi-PCR amplification reactions quantified successfully for Clostridium perfringens, Enterococcus faecalis, Staphylococcus aureus, Escherichia coli O157:H7 and Salmonella enterica. Using the validated multiplex RTi-PCR reactions, the presence and quantification of pathogens were investigated in 40 beef, 41 sheep and 30 chicken meat samples. Results showed that the existence of C...
November 14, 2017: Meat Science
https://www.readbyqxmd.com/read/29149625/the-effects-of-pre-and-post-slaughter-spray-application-with-organic-acids-on-microbial-population-reductions-on-beef-carcasses
#3
Hoa Van Ba, Hyun-Woo Seo, Seong Pil-Nam, Yoon-Seok Kim, Beom Young Park, Sung-Sil Moon, Se-Ju Kang, Yong-Min Choi, Jin-Hyoung Kim
As an attempt to control bacterial cross-contamination of beef carcasses, in the present investigation acetic acid and lactic acid (3% v/v) were used for bacterial decontamination. For the decontamination, cows were sprayed with each above acid at two different stages; (i) on live animal's hides, (ii) on carcass surfaces immediately after slaughter. Microbiological samples were taken on different hide areas of animals before spraying and on carcass surfaces at 24h after spraying. Meat quality traits were also analyzed on the sprayed animals...
November 6, 2017: Meat Science
https://www.readbyqxmd.com/read/29149266/association-between-prior-antibiotic-therapy-and-subsequent-risk-of-community-acquired-infections-a-systematic-review
#4
Umer Malik, David Armstrong, Mark Ashworth, Alex Dregan, Veline L'Esperance, Lucy McDonnell, Mariam Molokhia, Patrick White
Background: Antibiotic use can have negative unintended consequences including disruption of the human microbiota, which is thought to protect against pathogen overgrowth. We conducted a systematic review to assess whether there is an association between exposure to antibiotics and subsequent risk of community-acquired infections. Methods: We searched MEDLINE, EMBASE and Web of Science for studies published before 30 June 2017, examining the association between antibiotic use and subsequent community-acquired infection...
November 14, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29149185/linezolid-and-atorvastatin-impact-on-pneumonia-caused-by-staphyloccocus-aureus-in-rabbits-with-or-without-mechanical-ventilation
#5
Laure-Anne Pauchard, Mathieu Blot, Rémi Bruyere, Saber-Davide Barbar, Delphine Croisier, Lionel Piroth, Pierre-Emmanuel Charles
Pneumonia may involve methicillin-resistant Staphylococcus aureus (MRSA), with elevated rates of antibiotics failure. The present study aimed to assess the effect of statins given prior to pneumonia development. Spontaneously breathing (SB) or mechanically ventilated (MV) rabbits with pneumonia received atorvastatin alone, linezolid (LNZ) alone, or a combination of both (n = 5 in each group). Spontaneously breathing and MV untreated infected animals (n = 11 in each group), as well as uninfected animals (n = 5 in each group) were used as controls...
2017: PloS One
https://www.readbyqxmd.com/read/29149022/pyogenic-brain-abscess-caused-by-peptostreptococcus-in-a-patient-with-hiv-1-infection
#6
Jose Armando Gonzales Zamora, Luis Alberto Espinoza
In the setting of HIV, cerebral lesions are usually secondary to lymphoma and opportunistic infections; however, in patients with CD4 counts above 200 cells/uL, other pathologies such as pyogenic brain abscess could gain importance. The microbiology of pyogenic brain abscess has Staphylococcus and Streptococcus as the leading etiologic pathogens in immunocompetent individuals. Peptostreptococcus is also recognized as a common cause of brain abscess in this patient population. In HIV-infected individuals, there have been sporadic reports of Peptostreptococcus infections but none of brain abscess...
November 17, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/29149019/incidence-and-consequences-of-near-drowning-related-pneumonia-a-descriptive-series-from-martinique-french-west-indies
#7
Laura Cerland, Bruno Mégarbane, Hatem Kallel, Yanick Brouste, Hossein Mehdaoui, Dabor Resiere
Drowning represents one major cause of accidental death. Near-drowning patients are exposed to aspiration that may result in pneumonia with life-threatening consequences. We designed this descriptive study to investigate the frequency, nature, and consequences of post-drowning pneumonia. One hundred and forty-four near-drowning patients (33 children and 111 adults) admitted during four years to the University Hospital of Martinique, French Indies, were included. Patients presented pre-hospital cardiac arrest (41%) and exhibited acute respiratory failure (54%), cardiovascular failure (27%), and lactic acidosis (75%) on admission...
November 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29148920/the-unexpected-impact-of-vaccines-on-secondary-bacterial-infections-following-influenza
#8
Amber M Smith, Victor C Huber
Influenza virus infections remain a significant health burden worldwide, despite available vaccines. Factors that contribute to this include a lack of broad coverage by current vaccines and continual emergence of novel virus strains. Further complicating matters, when influenza viruses infect a host, severe infections can develop when bacterial pathogens invade. Secondary bacterial infections (SBIs) contribute to a significant proportion of influenza-related mortality, with Streptococcus pneumoniae, Staphylococcus aureus, Streptococcus pyogenes, and Haemophilus influenzae as major coinfecting pathogens...
November 17, 2017: Viral Immunology
https://www.readbyqxmd.com/read/29147933/aerobic-bacteriological-studies-on-the-respiratory-tracts-of-apparently-healthy-and-pneumonic-camels-camelus-dromedaries-in-selected-districts-of-afar-region-ethiopia
#9
Mu'uz Gebru, Genene Tefera, Fufa Dawo, Tesfaye Sisay Tessema
A cross-sectional study was conducted to isolate and identify bacterial species from the respiratory tract of apparently healthy and pneumonic camels in Asayita and Dubti woredas in the Afar Region, Ethiopia. From a total of 74 lung tissue and 74 tracheal swab samples Staphylococcus aureus, 16.3%, Streptococcus equi subsp. equi, 13.0%, and Pasteurella multocida, 10.9%, were dominant isolates from pneumonic lungs; Escherichia coli, 12.7%, Proteus species, 10.9%, and Klebsiella pneumoniae, 9.1%, were the majority in the normal lungs...
November 16, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29147677/antimicrobial-resistance-profiles-of-bacteria-isolated-from-the-nasal-cavity-of-camels-in-samburu-nakuru-and-isiolo-counties-of-kenya
#10
J M Mutua, C G Gitao, L C Bebora, F K Mutua
This study was designed to determine antimicrobial resistance profiles of bacteria isolated from the nasal cavity of healthy camels. A total of 255 nasal samples (swabs) were collected in Isiolo, Samburu, and Nakuru counties, Kenya, from which 404 bacterial isolates belonging to various genera and species were recovered. The bacterial isolates included Bacillus (39.60%), coagulase-negative Staphylococcus (29.95%), Streptococcus species other than Streptococcus agalactiae (25.74%), coagulase-positive Staphylococcus (3...
2017: Journal of veterinary medicine
https://www.readbyqxmd.com/read/29147504/immuno-targeting-of-staphylococcus-aureus-via-surface-remodeling-complexes
#11
Mary J Sabulski, Sean E Pidgeon, Marcos M Pires
Agents with novel mechanisms of action are needed to complement traditional antibiotics. Towards these goals, we have exploited the surface-homing properties of vancomycin to tag the surface of Gram-positive pathogens with immune cell attractants in two unique modes. First, vancomycin was conjugated to the small molecule hapten 2,4-dinitrophenol (DNP) to promote bacterial opsonization. Second, we built on these results by improving the tagging specificity and mechanism of incorporation by coupling it to a sortase A substrate peptide...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29147471/experience-with-ceftaroline-for-treatment-of-methicillin-resistant-staphylococcus-aureus-pneumonia-in-a-community-hospital
#12
Apurwa Karki, Craig Thurm, Kelly Cervellione
Background: Methicillin-resistant Staphylococcus aureus (MRSA) is an organism causing significant mortality and morbidity with nosocomial infections. Ceftaroline is a new cephalosporin antibiotic that has activity against MRSA. In the USA, this antibiotic has not been approved for use in pneumonia caused by MRSA. Objectives: To review the use of ceftaroline in MRSA pneumonia in a US hospital and evaluate its clinical success. Methods: A retrospective study was conducted in an urban community hospital assessing the use of ceftaroline for MRSA pneumonia...
2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29147103/antibacterial-effects-against-various-foodborne-pathogens-and-sensory-properties-of-yogurt-supplemented-with-panax-ginseng-marc-extract
#13
Su Jin Eom, Ji Eun Hwang, Kee-Tae Kim, Hyun-Dong Paik
Panax ginseng marc is produced from fresh ginseng roots during processing and is generally treated as industrial waste. The primary aim of this study was to improve its utilization in the dairy industry as a potential high-value resource. Yogurt was prepared from 11% skim milk powder, 0.1% pectin, 10% sucrose, and ginseng marc ethanol extract (GME, 0.5% and 1.0%) in milk, and was inoculated with a 0.02% yogurt culture (Lactobacillus acidophilus, Bifidobacterium longum, and Streptococcus thermophilus). After fermentation at 40°C for 6-8 h, the physicochemical properties of samples were analyzed by the AOAC, Kjeldahl, and Soxhlet methods...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/29146890/effectiveness-of-topical-green-tea-against-multidrug-resistant-staphylococcus-aureus-in-cases-of-primary-pyoderma-an-open-controlled-trial
#14
Nagaraju Umashankar, Belliappa Pemmanda, P Gopkumar, A J Hemalatha, Priya K Sundar, H V Prashanth
BACKGROUND: Antimicrobial activity of green tea against Staphylococcus aureus both in vitro and in vivo has been reported recently. Studies on clinical efficacy and safety of green tea as antibacterial agent against S. aureus in human cases are rare. OBJECTIVES: To evaluate the clinical effectiveness and safety of topical green tea on primary pyoderma caused by S. aureus. We also attempted to determine the minimum inhibitory concentration of green tea against S...
November 14, 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/29146888/halitosis-in-children-with-adenoid-hypertrophy
#15
Małgorzata Sikorska-Żuk, Marek Bochnia
This paper attempts to identify the sources and evaluate the prevalence of halitosis in children with adenoid hypertrophy. The study included pediatric patients admitted for adenoidectomy due to obstructive symptoms. Patients with possibly other causes of halitosis, were excluded from the study. Halitosis was detected in 30 out of 136 children (22.1%). The effect of adenoid hypertrophy on halitosis was confirmed by the significant reduction in the organoleptic score rated according to the Rosenberg Scale (on average by 2 degrees) and the levels of volatile sulfur compounds (VSCs) (on average 84 ppb) post-adenoidectomy, as compared to pre-surgery results...
November 17, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/29146601/airway-microbiota-across-age-and-disease-spectrum-in-cystic-fibrosis
#16
Edith T Zemanick, Brandie D Wagner, Charles E Robertson, Richard C Ahrens, James F Chmiel, John P Clancy, Ronald L Gibson, William T Harris, Geoffrey Kurland, Theresa A Laguna, Susanna A McColley, Karen McCoy, George Retsch-Bogart, Kurtis T Sobush, Pamela L Zeitlin, Mark J Stevens, Frank J Accurso, Scott D Sagel, J Kirk Harris
Our objectives were to characterise the microbiota in cystic fibrosis (CF) bronchoalveolar lavage fluid (BALF), and determine its relationship to inflammation and disease status.BALF from paediatric and adult CF patients and paediatric disease controls undergoing clinically indicated bronchoscopy was analysed for total bacterial load and for microbiota by 16S rDNA sequencing.We examined 191 BALF samples (146 CF and 45 disease controls) from 13 CF centres. In CF patients aged <2 years, nontraditional taxa (e...
November 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29146499/antimicrobial-resistance-and-virulence-genes-profiling-of-methicillin-resistant-staphylococcus-aureus-isolates-in-a-burn-center-a-5-year-study
#17
Bei Jiang, Supeng Yin, Bo You, Yali Gong, Guangtao Huang, Zichen Yang, Yulong Zhang, Yu Chen, Jing Chen, Zhiqiang Yuan, Xiaomei Hu, Yizhi Peng
Methicillin-resistant S. aureus (MRSA) has attracted more and more attention in recent years, especially in burn medical centers. Here we conducted a 5-year period study to evaluate the MRSA infection in our burn center. The staphylococcal chromosomal cassette mec (SCCmec) typing, antimicrobials susceptibility and virulence profiles were also performed among the MRSA isolates. Of the 259 S. aureus isolates, 239 (92.28%) isolates were identified as MRSA. A decreased trend of MRSA isolation rate over time was found (P = 0...
November 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29146498/synthesis-and-characterization-of-silver-nanoparticles-using-gelidium-amansii-and-its-antimicrobial-property-against-various-pathogenic-bacteria
#18
Arivalagan Pugazhendhi, Desika Prabakar, Jaya Mary Jacob, Indira Karuppusamy, Rijuta Ganesh Saratale
Microfouling is evolving at a fast rate causing augmented mortality rates and damage worldwide. Until now, several remedial measures have been exploited to overcome microfouling, amongst them nanoparticles play a superior role. Currently, green synthesized nanoparticles have been centered owing to its eco-friendly, cost effectively and non-toxic nature which has also increased its industrial applications (biomedicine, food and textile). In the present research Silver Nanoparticles (Ag NPs) synthesized using marine red algae Gelidium amansii...
November 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29146496/euterpe-oleracea-pulp-extract-chemical-analyses-antibiofilm-activity-against-staphylococcus-aureus-cytotoxicity-and-interference-on-the-activity-of-antimicrobial-drugs
#19
Marcus Vinícius Dias-Souza, Renan Martins Dos Santos, Isabela Penna Cerávolo, Gustavo Cosenza, Pedro Henrique Ferreira Marçal, Flávio Jr Barbosa Figueiredo
Euterpe oleracea (Açaí) fruit are widely consumed at the Brazil Amazon region, and biological potentials such as immunomodulatory and antioxidant have been described for its extracts. However, its antimicrobial effect remains poorly investigated. In this study, the antimicrobial and antibiofilm activities of the methanolic extract of an artisanally-manufactured açaí pulp (MEAP) were evaluated against clinical isolates of Staphylococcus aureus. Besides, MEAP interference on the activity of antimicrobial drugs of clinical relevance was explored, and its cytotoxicity against hepatocellular carcinoma cells (HepG2) was investigated...
November 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29146256/isolation-purification-structural-elucidation-and-antimicrobial-activities-of-kocumarin-a-novel-antibiotic-isolated-from-actinobacterium-kocuria-marina-cmg-s2-associated-with-the-brown-seaweed-pelvetia-canaliculata
#20
Bushra Uzair, Farid Menaa, Barkat Ali Khan, Faryal Vali Mohammad, Viqar Uddin Ahmad, Ryad Djeribi, Bouzid Menaa
AIMS: Screening of seaweed-associated bacteria capable of producing antimicrobials. METHODS AND RESULTS: Fifteen microbial strains, associated to the brown seaweed Pelvetia canaliculata (Linnaeus) attached to the rocks of Sonmiani Beach (Karachi, Pakistan), were screened. Crude extract filtrates of CMG S2 strain grew on Zobell marine agar (ZMA) had the most remarkable antimicrobial activity. Based on its phenotypic aspects (e.g. Gram-positive, microccoid form), biochemical characteristics (e...
January 2018: Microbiological Research
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