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environmental microbiology

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https://www.readbyqxmd.com/read/28727324/bacillus-thuringiensis-an-annotated-selection-of-world-wide-web-sites-relevant-to-the-topics-in-environmental-microbiology
#1
Lawrence P Wackett
No abstract text is available yet for this article.
August 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28727290/web-alert-radiation-and-desiccation-resistant-bacteria-an-annotated-selection-of-world-wide-web-sites-relevant-to-the-topics-in-environmental-microbiology
#2
Lawrence P Wackett
No abstract text is available yet for this article.
July 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28725217/metagenomics-the-next-culture-independent-game-changer
#3
REVIEW
Jessica D Forbes, Natalie C Knox, Jennifer Ronholm, Franco Pagotto, Aleisha Reimer
A trend towards the abandonment of obtaining pure culture isolates in frontline laboratories is at a crossroads with the ability of public health agencies to perform their basic mandate of foodborne disease surveillance and response. The implementation of culture-independent diagnostic tests (CIDTs) including nucleic acid and antigen-based assays for acute gastroenteritis is leaving public health agencies without laboratory evidence to link clinical cases to each other and to food or environmental substances...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28722599/assessment-of-fecal-exposure-pathways-in-low-income-urban-neighborhoods-in-accra-ghana-rationale-design-methods-and-key-findings-of-the-sanipath-study
#4
Katharine Robb, Clair Null, Peter Teunis, Habib Yakubu, George Armah, Christine L Moe
Rapid urbanization has contributed to an urban sanitation crisis in low-income countries. Residents in low-income, urban neighborhoods often have poor sanitation infrastructure and services and may experience frequent exposure to fecal contamination through a range of pathways. There are little data to prioritize strategies to decrease exposure to fecal contamination in these complex and highly contaminated environments, and public health priorities are rarely considered when planning urban sanitation investments...
July 17, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28721211/microbial-metal-resistance-and-metabolism-across-dynamic-landscapes-high-throughput-environmental-microbiology
#5
REVIEW
Hans Carlson, Adam Deutschbauer, John Coates
Multidimensional gradients of inorganic compounds influence microbial activity in diverse pristine and anthropogenically perturbed environments. Here, we suggest that high-throughput cultivation and genetics can be systematically applied to generate quantitative models linking gene function, microbial community activity, and geochemical parameters. Metal resistance determinants represent a uniquely universal set of parameters around which to study and evaluate microbial fitness because they represent a record of the environment in which all microbial life evolved...
2017: F1000Research
https://www.readbyqxmd.com/read/28711981/universal-direct-pcr-amplification-system-a-time-and-cost-effective-tool-for-high-throughput-applications
#6
Anis Ben-Amar, Souheib Oueslati, Ahmed Mliki
Taking into account the limits of current genotyping methodologies, we have established a versatile direct PCR method on intact microtissue samples without prior DNA isolation. A simple and standard protocol was developed and validated on a wide range of living organisms including bacterial and fungal strains, plant species and human samples. This allows reliable amplification of target genomic DNA fragment directly from source material using minimal amount of tissue which makes DNA purification irrelevant for a number of biological applications...
August 2017: 3 Biotech
https://www.readbyqxmd.com/read/28709485/biofilm-colonization-of-mycobacterium-abscessus-new-threat-in-hospital-acquired-surgical-site-infection
#7
Roumi Ghosh, Soumen Das, Harish Kela, Asmita De, Jayeeta Haldar, Prasanta Kumar Maiti
INTRODUCTION: Rapidly growing non-tuberculous mycobacteria (NTM) are hazardous cause of post-operative soft tissue infection leading to nosocomial outbreaks following various surgical procedures, especially laparoscopic surgeries using heat sensitive, non-autoclavable surgical instruments. METHODOLOGY: Surgery department of our hospital noticed increase in rate of post-laparoscopic abdominal port site infection (PSI) and informed the Microbiology Department. A prospective investigational study of defined cases with the aim of source tracing and formulation of infection control measures was initiated...
July 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28707243/research-trends-and-hotspots-related-to-ammonia-oxidation-based-on-bibliometric-analysis
#8
Maosheng Zheng, Hui-Zhen Fu, Yuh-Shan Ho
Ammonia oxidation is the rate-limiting and central step in global biogeochemistry cycle of nitrogen. A bibliometric analysis based on 4314 articles extracted from Science Citation Index Expanded database was carried out to provide insights into publication performances and research trends of ammonia oxidation in the period 1991-2014. These articles were originated from a wide range of 602 journals and 95 Web of Science Categories, among which Applied and Environmental Microbiology and Environmental Sciences took the leading position, respectively...
July 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28697668/syntrophy-goes-electric-direct-interspecies-electron-transfer
#9
Derek R Lovley
Direct interspecies electron transfer (DIET) has biogeochemical significance and practical applications that rely on DIET or DIET-based aspects of microbial physiology are growing. Mechanisms for DIET have primarily been studied in defined cocultures in which Geobacter species are one of the DIET partners. Electrically conductive pili (e-pili) can be an important electrical conduit for DIET. However, there may be instances in which electrical contacts are made between electron transport proteins associated with the outer membranes of the partners...
July 11, 2017: Annual Review of Microbiology
https://www.readbyqxmd.com/read/28694086/an-outbreak-of-post-craniotomy-propionibacterium-acnes-infections-at-a-tertiary-hospital-england-2011-a-case-control-study-identifies-dural-implants-as-a-risk-factor-for-infection
#10
Caoimhe McKerr, Nic Coetzee, Obaghe Edeghere, Shakeel Suleman, Neville Q Verlander, Krishna Banavathi
BACKGROUND: In 2011, 15 deep-seated Propionibacterium acnes infections were identified in patients following craniotomies in a hospital in the UK. AIM: To describe the outbreak and report findings from the investigation undertaken in order to identify the source & risk factors and inform control measures. METHODS: Data were obtained from hospital clinical records and included patient and surgical variables. Cases were defined as patients with microbiologically confirmed deep or organ space surgical site infection (SSI) caused by P...
July 7, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28693949/composting-of-food-wastes-status-and-challenges
#11
REVIEW
Alejandra Cerda, Adriana Artola, Xavier Font, Raquel Barrena, Teresa Gea, Antoni Sánchez
This review analyses the main challenges of the process of food waste composting and examines the crucial aspects related to the quality of the produced compost. Although recent advances have been made in crucial aspects of the process, such composting microbiology, improvements are needed in process monitoring. Therefore, specific problems related to food waste composting, such as the presence of impurities, are thoroughly analysed in this study. In addition, environmental impacts related to food waste composting, such as emissions of greenhouse gases and odours, are discussed...
June 26, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28693587/human-presence-impacts-fungal-diversity-of-inflated-lunar-mars-analog-habitat
#12
A Blachowicz, T Mayer, M Bashir, T R Pieber, P De León, K Venkateswaran
BACKGROUND: An inflatable lunar/Mars analog habitat (ILMAH), simulated closed system isolated by HEPA filtration, mimics International Space Station (ISS) conditions and future human habitation on other planets except for the exchange of air between outdoor and indoor environments. The ILMAH was primarily commissioned to measure physiological, psychological, and immunological characteristics of human inhabiting in isolation, but it was also available for other studies such as examining its microbiological aspects...
July 11, 2017: Microbiome
https://www.readbyqxmd.com/read/28688848/electrochemical-and-or-microbiological-treatment-of-pyrolysis-wastewater
#13
José R O Silva, Dara S Santos, Ubiratan R Santos, Katlin I B Eguiluz, Giancarlo R Salazar-Banda, Jaderson K Schneider, Laiza C Krause, Jorge A López, Maria L Hernández-Macedo
Electrochemical oxidation may be used as treatment to decompose partially or completely organic pollutants (wastewater) from industrial processes such as pyrolysis. Pyrolysis is a thermochemical process used to obtain bio-oil from biomasses, generating a liquid waste rich in organic compounds including aldehydes and phenols, which can be submitted to biological and electrochemical treatments in order to minimize its environmental impact. Thus, electrochemical systems employing dimensionally stable anodes (DSAs) have been proposed to enable biodegradation processes in subsurface environments...
June 30, 2017: Chemosphere
https://www.readbyqxmd.com/read/28685557/the-use-of-chlorhexidine-in-mouthguards
#14
S D Ercole, M Tieri, D Fulco, D Martinelli, D Tripodi
Sports mouthguards have the potential to become a microbial reservoir, to produce oral and systemic diseases and cause changes in environmental oral factors, inhibiting the protective effect of saliva. The aim of this study was to monitor, in vivo, oral environmental changes caused by chlorhexidine and sports mouthguards and in vitro, the effects of microbial strains, saliva and chlorhexidine on Ethylene-Vinyl-Acetate (EVA) material. Seventy-two athletes were analyzed at different time points: before training session (T0), post-training (TA), post-training with mouthguard (TB), post-training with mouthguard and chlorhexidine (TC)...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28681690/development-of-nutrient-rich-growing-media-with-hazelnut-husk-and-municipal-sewage-sludge
#15
Omer Hulusi Dede, Saim Ozdemir
In the present study, development of structurally stable, rich in nutrients and environmentally safe growing media was carried out by combining waste material: crop residue hazelnut husk and municipal sewage sludge. In order to achieve this goal, structurally stable lignocellulosic hazelnut husk (HH) residue was mixed with nutrient-rich sewage sludge (S) in various proportions: HH 100%; HH+S1 87.5% : 12.5%; HH+S2 75% : 2 5%; HH+S3 50% : 5 0%. Following composting, the key physical, chemical and microbiological properties of the growing media were characterized for long term ornamental nursery crops...
July 6, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28681316/donor-derived-candida-stellimalicola-in-a-clinical-specimen-preservation-fluid-contamination-during-pancreas-procurement
#16
Damien Dupont, Antoine Huguenin, Elodie Tisserand, Véronique Reiter, Emmanuel Morelon, Lionel Badet, Isabelle Villena, Martine Wallon, Dominique Toubas
We report here a case of possible donor-derived Candida stellimalicola infection after pancreas transplantation. Candida stellimalicola, an environmental non-filamentous yeast, was isolated from both the peritoneal fluid of the graft donor and the preservation fluid of the transplanted pancreas. Interestingly, this strain exhibited high minimum inhibitory concentrations to azoles. These results justified the use of echinocandins as therapy instead of fluconazole. This switch permitted a favorable outcome. To our knowledge, this is the first report of C...
July 5, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28676652/anaerobic-consortia-of-fungi-and-sulfate-reducing-bacteria-in-deep-granite-fractures
#17
Henrik Drake, Magnus Ivarsson, Stefan Bengtson, Christine Heim, Sandra Siljeström, Martin J Whitehouse, Curt Broman, Veneta Belivanova, Mats E Åström
The deep biosphere is one of the least understood ecosystems on Earth. Although most microbiological studies in this system have focused on prokaryotes and neglected microeukaryotes, recent discoveries have revealed existence of fossil and active fungi in marine sediments and sub-seafloor basalts, with proposed importance for the subsurface energy cycle. However, studies of fungi in deep continental crystalline rocks are surprisingly few. Consequently, the characteristics and processes of fungi and fungus-prokaryote interactions in this vast environment remain enigmatic...
July 4, 2017: Nature Communications
https://www.readbyqxmd.com/read/28667104/response-of-microbial-community-function-to-fluctuating-geochemical-conditions-within-a-legacy-radioactive-waste-trench-environment
#18
Xabier Vázquez-Campos, Andrew S Kinsela, Mark W Bligh, Jennifer J Harrison, Timothy E Payne, T David Waite
During the 1960s, small quantities of radioactive materials were co-disposed with chemical waste at the Little Forest Legacy Site (Sydney, Australia) in three-metre-deep, unlined trenches. Chemical and microbial analyses, including functional and taxonomic information derived from shotgun metagenomics, were collected across a six-week period immediately after a prolonged rainfall event to assess how changing water levels impact upon the microbial ecology and contaminant mobility. Collectively, results demonstrated that oxygen-laden rainwater rapidly altered the redox balance in the trench water, strongly impacting microbial functioning as well as the radiochemistry...
June 30, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28662489/viable-but-non-culturable-e-%C3%A2-coli-induced-by-low-level-chlorination-have-higher-persistence-to-antibiotics-than-their-culturable-counterparts
#19
Huirong Lin, Chengsong Ye, Sheng Chen, Shenghua Zhang, Xin Yu
Disinfectant used in drinking water treatment and distribution system can induce culturable bacteria, including various kinds of pathogenic bacteria, into viable but non-culturable (VBNC) state. The loss of cultural state, resuscitation and environmental persistence of VBNC bacteria will severely damage drinking water microbiological safety and thus pose a risk to public health. The manner in which chlorination treatment induced a VBNC state in Escherichia coli and the antibiotic persistence of VBNC bacteria was investigated...
June 26, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28661360/the-swiss-society-of-microbiology-small-bugs-big-questions-and-cool-answers
#20
Gilbert Greub, Christof Holliger, Dominique Sanglard, Jacques Schrenzel, Volker Thiel, Patrick Viollier
The Swiss Society for Microbiology (SSM) represents around 700 scientists working in the fields of medical (human and veterinary), microbial biotechnology as well as fundamental, environmental, and food microbiology. Five sections: Clinical Microbiology, Environmental Microbiology, Mycology, Prokaryotic Biology, and Virology reflects the main interests of the membership.
December 21, 2016: Chimia
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