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https://www.readbyqxmd.com/read/28647859/high-touch-surfaces-microbial-neighbours-at-hand
#1
REVIEW
L Cobrado, A Silva-Dias, M M Azevedo, A G Rodrigues
Despite considerable efforts, healthcare-associated infections (HAIs) continue to be globally responsible for serious morbidity, increased costs and prolonged length of stay. Among potentially preventable sources of microbial pathogens causing HAIs, patient care items and environmental surfaces frequently touched play an important role in the chain of transmission. Microorganisms contaminating such high-touch surfaces include Gram-positive and Gram-negative bacteria, viruses, yeasts and parasites, with improved cleaning and disinfection effectively decreasing the rate of HAIs...
June 25, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28647707/hepatitis-e-virus-and-neurological-disorders
#2
REVIEW
Brendan N Mclean, James Gulliver, Harry R Dalton
Hepatitis E is the most common cause of hepatitis worldwide. While originally considered a disease of developing countries, it is increasingly recognised in developed countries, probably related to contaminated pork meat, and where infection is often asymptomatic. However, several non-liver manifestations have become apparent, the most important of which are neurological, including Guillain-Barré syndrome (acute inflammatory demyelinating polyradiculoneuropathy (AIDP)), neuralgic amyotrophy and meningoencephalitis...
June 24, 2017: Practical Neurology
https://www.readbyqxmd.com/read/28647607/bioaccessibility-and-risk-assessment-of-essential-and-non-essential-elements-in-vegetables-commonly-consumed-in-swaziland
#3
Robert Londi Mnisi, Peter P Ndibewu, Lihle D Mafu, Gabriel C Bwembya
The green leafy vegetables (Mormodica involucrate, Bidens pilosa and Amaranthus spinosus) are economic; seasonal; locally grown and easily available; easy to propagate and store; highly nutritious food substances that form an important component of diets. This study applies a physiology based extraction technique (PBET) to mimic digestion of these vegetables to determine the fraction of essential (Fe and Zn) and non-essential elements (Cd, Cr and Pb) that are made available for absorption after ingestion. Prior to the application of the PBET, the vegetables were cooked adopting indigenous Swazi cooking methods...
June 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28647606/role-of-streptomyces-pactum-in-phytoremediation-of-trace-elements-by-brassica-juncea-in-mine-polluted-soils
#4
Amjad Ali, Di Guo, Amanullah Mahar, Zhen Wang, Dost Muhammad, Ronghua Li, Ping Wang, Feng Shen, Quanhong Xue, Zengqiang Zhang
The industrial expansion, smelting, mining and agricultural practices have increased the release of toxic trace elements (TEs) in the environment and threaten living organisms. The microbe-assisted phytoremediation is environmentally safe and provide an effective approach to remediate TEs contaminated soils. A pot experiment was conducted to test the potential of an Actinomycete, subspecies Streptomyces pactum (Act12) along with medical stone compost (MSC) by growing Brassica juncea in smelter and mines polluted soils of Feng County (FC) and Tongguan (TG, China), respectively...
June 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28647605/will-heavy-metals-in-the-soils-of-newly-submerged-areas-threaten-the-water-quality-of-danjiangkou-reservoir-china
#5
Zhixin Song, Baoqing Shan, Wenzhong Tang, Chao Zhang
Soil heavy metal contents were measured in newly submerged areas of the Danjiangkou Reservoir, China. We aimed to determine the heavy metal distribution in this area and the associated ecological risk. Most of these heavy metal contents (except Pb and Mn) suggest enrichment compared with the background values of soils from Henan Province, especially As and Cd with mean geo-accumulation index (Igeo) values of 0.84 and 0.54. The spatial analysis results indicated that the highest heavy metal contents were distributed in the arable soils above 160m elevation, whereas low heavy metal contents were observed under other land-use types above 160m elevation...
June 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28647473/-rotavirus-salmonella-coinfection-due-to-turtles-two-cases-with-exotic-pets
#6
M Angot, F Labbe, A Duquenoy, P Le Roux
Salmonellosis is a leading cause of bacterial gastroenteritis, responsible for invasive infections especially in young children. Reptiles are salmonella reservoirs, and the indirect contact via parents' hands may be responsible for contamination. We report on two cases of Salmonella-rotavirus coinfection secondary to the presence of turtles in the home.
June 21, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28647424/self-disinfecting-surfaces-and-the-activity-against-staphyloccocus-aureus-atcc-6538-under-real-life-conditions
#7
Christina Brühwasser, Holger Heinrich, Cornelia Lass-Flörl, Astrid Mayr
Environmental surface contamination provides a potential reservoir for pathogens to cause infections. Hence, self-disinfecting surfaces have been developed to possibly reduce exogenous transmission. Five different self-disinfecting surfaces were evaluated for activity against Staphylococcus aureus ATCC 6538 under real-life conditions by applying the dry-inoculation method. Various antimicrobial effects were detected. However, following alcoholic wipe-disinfection these effects disappeared. Further development is necessary to produce self-disinfecting panels that are stable in the presence of hospital disinfectants, since it is impossible to guarantee that self-disinfecting surfaces in healthcare settings...
June 21, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28647423/sterilizing-service-unit-packing-area-to-glove-or-regular-hand-hygiene-that-is-the-question
#8
Dayane de Melo Costa, Lillian Kelly de Oliveira Lopes, Anaclara Ferreira Veiga Tipple, Roel Beltran Castillo, Honghua Hu, Anand Kumar Deva, Karen Vickery
BACKGROUND: During functionality testing and packaging of reusable surgical instruments (RSI) for sterilisation, instruments are frequently touched. Considering the lack of standards relating to hand hygiene frequency and use of gloves in the sterilising service unit packing area, we aimed to determine the effect of hand hygiene and glove use on maintenance of RSI cleanliness. METHODS: Following manual and automated cleaning, Halsted-mosquito forceps were assessed for adenosine triphosphate (ATP), protein and microbial contamination after handling with gloved and ungloved but washed hands utilising an ATP surface swab test, bicinchoninic acid assay, and standard culture plate/broth, respectively...
June 21, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28647332/longitudinal-relationship-between-fecal-culture-fecal-quantitative-pcr-and-milk-elisa-in-mycobacterium-avium-ssp-paratuberculosis-infected-cows-from-low-prevalence-dairy-herds
#9
A Beaver, R W Sweeney, E Hovingh, D R Wolfgang, Y T Gröhn, Y H Schukken
Mycobacterium avium ssp. paratuberculosis (MAP), the causative agent of ruminant Johne's disease, presents a particular challenge with regard to infection mitigation on dairy farms. Diagnostic testing strategies to identify and quantify MAP and associated antibodies are imperfect, and certain facets of the relationship between diagnostic tests remain to be explored. Additional repeated-measures data from known infected animals are needed to complement the body of cross-sectional research on Johne's disease-testing methods...
June 21, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28647306/complete-genome-sequence-of-a-phthalic-acid-esters-degrading-mycobacterium-sp-yc-rl4
#10
Lei Ren, Shuanghu Fan, Junhuan Wang, Nahurira Ruth, Cheng Qiao, Yang Jia, Yanchun Yan
Mycobacterium sp. YC-RL4 is capable of utilizing a broad range of phthalic acid esters (PAEs) as sole source of carbon and energy for growth. The preliminary studies demonstrated its high degrading efficiency and good performance during the bioprocess with environmental samples. Here, we present the complete genome of Mycobacterium sp. YC-RL4, which consists of one circular chromosome (5,801,417bp) and one plasmid (252,568bp). The genomic analysis and gene annotation were performed and many potential genes responsible for the biodegradation of PAEs were identified from the genome...
June 3, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28647296/multiple-stressors-including-contaminant-exposure-and-parasite-infection-predict-spleen-mass-and-energy-expenditure-in-breeding-ring-billed-gulls
#11
Sarah C Marteinson, David J Marcogliese, Jonathan Verreault
Daily energy expenditure (DEE) in animals is influenced by many factors although the impact of stressors remains largely unknown. The objective of this study was to determine how multiple physiological stressors (parasite infection and contaminant exposure) and natural challenges (energy-demanding activities and weather conditions) may affect DEE in nesting ring-billed gulls (Larus delawarensis) exposed to high concentrations of persistent organic contaminants (POPs). Physical activity, temperature, gastrointestinal parasitic worm abundance, relative spleen mass, plasma thyroid hormone levels and liver concentrations of POPs were determined; field metabolic rate (FMR) was used as a measure of DEE...
June 21, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28647253/nano-sized-fe2o3-fe3o4-facilitate-anaerobic-transformation-of-hexavalent-chromium-in-soil-water-systems
#12
Yaxian Zhang, Hua Li, Libo Gong, Guowen Dong, Liang Shen, Yuanpeng Wang, Qingbiao Li
The purpose of this study is to investigate the effects of nano-sized or submicro Fe2O3/Fe3O4 on the bioreduction of hexavalent chromium (Cr(VI)) and to evaluate the effects of nano-sized Fe2O3/Fe3O4 on the microbial communities from the anaerobic flooding soil. The results indicated that the net decreases upon Cr(VI) concentration from biotic soil samples amended with nano-sized Fe2O3 (317.1±2.1mg/L) and Fe3O4 (324.0±22.2mg/L) within 21days, which were approximately 2-fold of Cr(VI) concentration released from blank control assays (117...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647251/pet-modified-red-mud-as-catalysts-for-oxidative-desulfurization-reactions
#13
Nayara T do Prado, Ana P Heitmann, Herman S Mansur, Alexandra A Mansur, Luiz C A Oliveira, Cinthia S de Castro
This work describes the synthesis of catalysts based on red mud/polyethylene terephthalate (PET) composites and their subsequent heat treatment under N2 atmosphere. The materials were characterized by scanning electron microscopy (SEM), temperature programmed reduction (TPR), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric (TG) analysis and N2 adsorption/desorption. The catalysts were evaluated in the oxidative desulfurization reaction of dibenzothiophene (DBT) in a biphasic system...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647250/constructed-wetlands-for-wastewater-treatment-in-cold-climate-a-review
#14
REVIEW
Mo Wang, Dong Qing Zhang, Jian Wen Dong, Soon Keat Tan
Constructed wetlands (CWs) have been successfully used for treating various wastewaters for decades and have been identified as a sustainable wastewater management option worldwide. However, the application of CW for wastewater treatment in frigid climate presents special challenges. Wetland treatment of wastewater relies largely on biological processes, and reliable treatment is often a function of climate conditions. To date, the rate of adoption of wetland technology for wastewater treatment in cold regions has been slow and there are relatively few published reports on CW applications in cold climate...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647229/a-combined-process-coupling-phytoremediation-and-in-situ-flushing-for-removal-of-arsenic-in-contaminated-soil
#15
Xiulan Yan, Qiuxin Liu, Jianyi Wang, Xiaoyong Liao
Phytoremediation and soil washing are both potentially useful for remediating arsenic (As)-contaminated soils. We evaluated the effectiveness of a combined process coupling phytoremediation and in situ soil flushing for removal of As in contaminated soil through a pilot study. The results showed that growing Pteris vittata L. (P.v.) accompanied by soil flushing of phosphate (P.v./Flushing treatment) could significantly decrease the total As concentration of soil over a 37day flushing period compared with the single flushing (Flushing treatment)...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28647152/a-first-report-of-rare-earth-elements-in-northwestern-mediterranean-seaweeds
#16
Stefania Squadrone, Paola Brizio, Marco Battuello, Nicola Nurra, Rocco Mussat Sartor, Alessandro Benedetto, Daniela Pessani, Maria Cesarina Abete
The concentrations of rare earth elements (REE) were determined by ICP-MS in dominant seaweed species, collected from three locations of the northwestern Mediterranean Sea. This is the first study to define levels and patterns of REE in macro algae from these coastal areas. Rare elements are becoming emerging inorganic contaminants in marine ecosystems, due to their worldwide increasing applications in industry, technology, medicine and agriculture. Significant inter-site and interspecies differences were registered, with higher levels of REE in brown and green macro algae than in red seaweeds...
June 21, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28647144/simultaneous-determination-of-uv-filters-and-estrogens-in-aquatic-invertebrates-by-modified-quick-easy-cheap-effective-rugged-and-safe-extraction-and-liquid-chromatography-tandem-mass-spectrometry
#17
Ke He, Anne Timm, Lee Blaney
Ultraviolet-filters (UV-filters) and estrogens have attracted increased attention as contaminants of emerging concern (CECs) due to their widespread occurrence in the environment. Most of these CECs are hydrophobic and have the potential to accumulate in aquatic organisms. To date, co-analysis of UV-filters and estrogens has not been reported due, in part, to the complex environmental matrices. Here, a multi-residue method has been developed for simultaneous determination of five UV-filters and three estrogens in tissue from aquatic and marine organisms...
June 15, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28647051/longitudinal-nosocomial-outbreak-of-pseudomonas-fluorescens-bloodstream-infection-of-2-years-duration-in-a-coronary-care-unit
#18
Yuichiro Oba, Takahiro Nakajima, Chiyo Ogida, Miyuki Kawanami, Mamoru Fujiwara, Ikuko Matsumura
BACKGROUND: Outbreaks of bloodstream infections (BSI) of nonfermenting bacteria are a critical issue and often associated with hospital environments. We experienced a long-lasting outbreak of Pseudomonas fluorescens BSI limited to a coronary care unit (CCU). METHODS: We conducted a retrospective epidemiologic investigation and a case-control study for Pseudomonas fluorescens BSI from April 2011-July 2014. Environmental sample culture was conducted to detect the specific environmental source of transmission...
June 21, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28646960/the-controversial-role-of-breast-milk-in-gbs-late-onset-disease
#19
Petra Zimmermann, Amanda Gwee, Nigel Curtis
Group B streptococcus (GBS) is one of the most common causes of neonatal sepsis and meningitis. Intra-partum antibiotic prophylaxis does not play a significant role in reducing the risk of GBS late-onset disease. One of the proposed mechanisms for GBS late-onset disease is infection through contaminated breast milk. Infants in whom breast milk is thought to be the source for GBS late-onset disease are more heavily colonised and reports suggest they have a higher recurrence rate compared to infants with other potential sources...
June 2017: Journal of Infection
https://www.readbyqxmd.com/read/28646859/comparison-of-different-nat-assays-for-the-detection-of-microorganisms-belonging-to-the-class-mollicutes
#20
O Vega-Orellana, J B Poveda, R S Rosales, J M Bradbury, C G Poveda, L E Mederos-Iriarte, M M Tavío, A S Ramírez
BACKGROUND: Mollicutes detection can be cumbersome due to their slow growth in vitro. For this reason, the use of DNA based on generic molecular tests represents an alternative for rapid, sensitive and specific detection of these microorganism. For this reason, six previously described nucleic acid testing assays were compared to evaluate their ability to detect microorganisms belonging to the class Mollicutes. METHODS: A panel of 61 mollicutes, including representatives from the Mycoplasma, Acholeplasma, Mesoplasma, Spiroplasma and Ureaplasma genus, were selected to evaluate the sensitivity and specificity of these assays...
June 24, 2017: BMC Veterinary Research
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