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https://www.readbyqxmd.com/read/28646766/gaps-in-aquatic-toxicological-studies-of-microplastics
#1
REVIEW
Ali Karami
The contamination of aquatic environments with microplastics (MPs) has spurred an unprecedented interest among scientific communities to investigate their impacts on biota. Despite the rapid growth in the number of studies on the aquatic toxicology of MPs, controversy over the fate and biological impacts of MPs is increasingly growing mainly due to the absence of standardized laboratory bioassays. Given the complex features of MPs, such as the diversity of constituent polymers, additives, shapes and sizes, as well as continuous changes in the particle buoyancy as a result of fouling and defouling processes, it is necessary to modify conventional bioassay protocols before employing them for MP toxicity testings...
June 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28646043/an-efficient-flp-based-toolkit-for-spatiotemporal-control-of-gene-expression-in-caenorhabditis-elegans
#2
Celia María Muñoz-Jiménez, Cristina Ayuso, Agnieszka Dobrzynska, Antonio Torres, Patricia de la Cruz Ruiz, Peter Askjaer
Site-specific recombinases are potent tools to regulate gene expression. In particular, the Cre and FLP enzymes are widely used to either activate or inactivate genes in a precise spatiotemporal manner. Both recombinases work efficiently in the popular model organism Caenorhabditis elegans but their use in this nematode is still only sporadic. To increase the utility of the FLP system in C. elegans we have generated a series of single-copy transgenic strains that stably express an optimized version of FLP in specific tissues or by heat induction...
June 23, 2017: Genetics
https://www.readbyqxmd.com/read/28645883/the-first-nationwide-surveillance-of-antibacterial-susceptibility-patterns-of-pathogens-isolated-from-skin-and-soft-tissue-infections-in-dermatology-departments-in-japan
#3
Shinichi Watanabe, Takamitsu Ohnishi, Akira Yuasa, Hiroshi Kiyota, Satoshi Iwata, Mitsuo Kaku, Akira Watanabe, Junko Sato, Hideaki Hanaki, Motomu Manabe, Tamio Suzuki, Fujio Otsuka, Michiko Aihara, Ken Iozumi, Takeshi Tamaki, Yuichi Funada, Mikio Shinozaki, Motoko Kobayashi, Masaru Okuda, Go Kikyo, Kumi Kikuchi, Yoshitane Okada, Masanori Takeshima, Osamu Kaneko, Natsuki Ogawa, Rie Ito, Ryuhei Okuyama, Shinji Shimada, Tadamichi Shimizu, Naohito Hatta, Maeda Manabu, Kiyohiro Tsutsui, Toshihiro Tanaka, Yoshiki Miyachi, Hideo Asada, Fukumi Furukawa, Ichiro Kurokawa, Keiji Iwatsuki, Michihiro Hide, Masahiko Muto, Osamu Yamamoto, Hiroyuki Niihara, Kenji Takagaki, Yasuo Kubota, Koji Sayama, Shigetoshi Sano, Masutaka Furue, Takuro Kanekura
To investigate the trends of antimicrobial resistance in pathogens isolated from skin and soft-tissue infections (SSTI) at dermatology departments in Japan, a Japanese surveillance committee conducted the first nationwide survey in 2013. Three main organisms were collected from SSTI at 30 dermatology departments in medical centers and 10 dermatology clinics. A total of 860 strains - 579 of Staphylococcus aureus, 240 of coagulase-negative Staphylococci, and 41 of Streptococcus pyogenes - were collected and shipped to a central laboratory for antimicrobial susceptibility testing...
June 20, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28645751/psychometric-evaluation-of-the-german-version-of-the-intuitive-eating-scale-2-in-a-community-sample
#4
Ulrike Alexandra Ruzanska, Petra Warschburger
Intuitive eating is based on a strong physical connection with the body, aligned to internal cues of hunger and satiety, and a low preoccupation with food. The aim of this study was to provide a German version of the Intuitive Eating Scale-2 (IES-2) and to examine its psychometric properties with data collected from 532 participants aged 18-91 years. The IES-2 was translated into German following the World Health Organization guidelines (2016). Cronbach's alpha as a measure of internal consistency was .89 for the IES-2 total score, as well as ...
June 20, 2017: Appetite
https://www.readbyqxmd.com/read/28645709/aquatic-biodiversity-in-sedimentation-ponds-receiving-road-runoff-what-are-the-key-drivers
#5
Zhenhua Sun, John E Brittain, Ekaterina Sokolova, Helene Thygesen, Svein Jakob Saltveit, Sebastien Rauch, Sondre Meland
Recently, increased attention has been paid to biodiversity conservation provided by blue-green solutions such as engineered ponds that are primarily established for water treatment and flood control. However, little research has been done to analyse the factors that affect biodiversity in such ponds. The purpose of this study was to evaluate the influence of environmental factors on aquatic biodiversity, mainly macroinvertebrate communities, in road sedimentation ponds in order to provide a foundation for recommendations on aquatic biodiversity conservation...
June 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28645701/effect-of-phosphate-solubilizing-bacteria-on-phosphorus-dynamics-and-the-bacterial-community-during-composting-of-sugarcane-industry-waste
#6
German A Estrada-Bonilla, Cintia M Lopes, Ademir Durrer, Paulo R L Alves, Nicolle Passaglia, Elke J B N Cardoso
Sugarcane processing generates a large quantity of residues, such as filter cake and ashes, which are sometimes composted prior to their amendment in soil. However, important issues still have to be addressed on this subject, such as the description of bacterial succession that occurs throughout the composting process and the possibilities of using phosphate-solubilizing bacteria (PSB) during the process to improve phosphorus (P) availability in the compost end product. Consequently, this study evaluated the bacterial diversity and P dynamics during the composting process when inoculated with Pseudomonas aeruginosa PSBR12 and Bacillus sp...
June 7, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28645319/architectural-frameworks-defining-the-structures-for-implementing-learning-health-systems
#7
Lysanne Lessard, Wojtek Michalowski, Michael Fung-Kee-Fung, Lori Jones, Agnes Grudniewicz
BACKGROUND: The vision of transforming health systems into learning health systems (LHSs) that rapidly and continuously transform knowledge into improved health outcomes at lower cost is generating increased interest in government agencies, health organizations, and health research communities. While existing initiatives demonstrate that different approaches can succeed in making the LHS vision a reality, they are too varied in their goals, focus, and scale to be reproduced without undue effort...
June 23, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28645185/soil-prokaryotic-communities-in-chernobyl-waste-disposal-trench-t22-are-modulated-by-organic-matter-and-radionuclide-contamination
#8
Nicolas Theodorakopoulos, Laureline Février, Mohamed Barakat, Philippe Ortet, Richard Christen, Laurie Piette, Sviatoslav Levchuk, Karine Beaugelin-Seiller, Claire Sergeant, Catherine Berthomieu, Virginie Chapon
After the Chernobyl nuclear power plant accident in 1986, contaminated soils, vegetation from the Red Forest, and other radioactive debris were buried within trenches. In this area, trench T22 has long been a pilot site for the study of radionuclide migration in soil. Here, we used 454 pyrosequencing of 16S rRNA genes to obtain a comprehensive view of the bacterial and archaeal diversity in soils collected inside and in the vicinity of the trench T22 and to investigate the impact of radioactive waste disposal on prokaryotic communities...
June 22, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28645031/understanding-the-variation-of-microbial-community-in-heavy-metals-contaminated-soil-using-high-throughput-sequencing
#9
Honghong Guo, Mubasher Nasir, Jialong Lv, Yunchao Dai, Jiakai Gao
To improve the understanding of bacterial community in heavy metals contaminated soils, we studied the effects of environmental factors on the bacterial community structure in contaminated fields located in Shaanxi Province of China. Our results showed that microbial community structure varied among sites, and it was significantly affected by soil environmental factors such as pH, soil organic matter (SOM), Cd, Pb and Zn. In addition, Spearman's rank-order correlation indicated heavy metal sensitive (Ralstonia, Gemmatimona, Rhodanobacter and Mizugakiibacter) and tolerant (unidentified-Nitrospiraceae, Blastocatella and unidentified-Acidobacteria) microbial groups...
June 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28645029/phytoavailability-of-cr-in-silene-vulgaris-the-role-of-soil-plant-genotype-and-bacterial-rhizobiome
#10
P García-Gonzalo, A E Pradas Del Real, M Pirredda, M J Gismera, M C Lobo, A Pérez-Sanz
Understanding the metal behavior at the soil-root interface is of utmost significance for a successful implementation of phytoremediation. In this study, we investigated the differences in chromium (Cr) uptake, chemical changes in soil solution and the shifts in rhizosphere bacterial communities of two genotypes of Silene vulgaris (SV21, SV38) with different tolerance to Cr. A greenhouse experiment was performed in two soils that differed on pH and organic matter (OM) content. An industrial sludge with high content in Cr was used as pollution source...
June 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28644610/mzmine-2-data-preprocessing-to-enhance-molecular-networking-reliability
#11
Florent Olivon, Gwendal Grelier, Fanny Roussi, Marc Litaudon, David Touboul
Molecular networking is becoming more and more popular into the metabolomic community to organize tandem mass spectrometry (MS2) data. Even though this approach allows the treatment and comparison of large data sets, several drawbacks related to the MS-Cluster tool routinely used on the Global Natural Product Social Molecular Networking platform (GNPS) limit its potential. MS-Cluster cannot distinguish between chromatography well-resolved isomers as retention times are not taken into account. Annotation with predicted chemical formulas is also not implemented and semi-quantification is only based on the number of MS2 scans...
June 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28644300/breathlessness-in-the-primary-care-setting
#12
Noel Baxter
PURPOSE OF REVIEW: Breathlessness is a high-volume problem with 10% of adults experiencing the symptom daily placing a heavy burden on the health and wider economy. As it worsens, they enter the specialist and hospital-based symptom services where costs quickly escalate and people may find themselves in a place not of their choosing. For many, their care will be delivered by a disease or organ specialist and can find themselves passing between physicians without coordination for symptom support...
July 20, 2017: Current Opinion in Supportive and Palliative Care
https://www.readbyqxmd.com/read/28643546/sexual-abuse-within-employment-settings-a-comparison-of-work-related-intra-and-extra-familial-child-molesters
#13
Diana M Falkenbach, Antonia Foehse, Elizabeth Jeglic, Cynthia Calkins, Linsey Raymaekers
Child sexual abuse (CSA) is a serious problem not only in the community but also in institutional settings such as youth-serving organizations, churches, and schools. Although research has started to examine the problem of abuse in institutional settings, there remains a dearth of information about the nature and context of CSA in different employment settings, including those that do not specifically cater to children. In addition, research on the similarities and differences between perpetrators who work with children and other sex offenders is scarce...
June 1, 2017: Sexual Abuse: a Journal of Research and Treatment
https://www.readbyqxmd.com/read/28643268/sexual-health-in-a-social-and-cultural-context-a-qualitative-study-of-young-latina-lesbian-bisexual-and-queer-women
#14
Christie A Santos, Emily C Williams, Julius Rodriguez, India J Ornelas
Previous research on sexual minority and Latina women suggests that Latina lesbian, bisexual, and queer (LBQ) women may be at high risk for sexually associated and transmitted infections, but research on the sexual health and practices of this population is limited. This qualitative study explored the knowledge, attitudes, and values related to sexual health among a purposive sample of Latina LBQ women living in Seattle, WA. Latina LBQ women (N = 14) were recruited to participate in in-depth interviews about their sexual health through community organizations, flyers posted on college campuses, email and social media advertisements, and participant referrals...
June 22, 2017: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/28642991/extensive-overlap-of-tropical-rainforest-bacterial-endophytes-between-soil-plant-parts-and-plant-species
#15
Emmanuel Haruna, Noraziah M Zin, Dorsaf Kerfahi, Jonathan M Adams
The extent to which distinct bacterial endophyte communities occur between different plant organs and species is poorly known and has implications for bioprospecting efforts. Using the V3 region of the bacterial 16S ribosomal RNA (rRNA) gene, we investigated the diversity patterns of bacterial endophyte communities of three rainforest plant species, comparing leaf, stem, and root endophytes plus rhizosphere soil community. There was extensive overlap in bacterial communities between plant organs, between replicate plants of the same species, between plant species, and between plant organ and rhizosphere soil, with no consistent clustering by compartment or host plant species...
June 22, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28642755/vaginal-and-uterine-bacterial-communities-in-postpartum-lactating-cows
#16
Brooke A Clemmons, Sydney T Reese, Felipe G Dantas, Gessica A Franco, Timothy P L Smith, Olusoji I Adeyosoye, Ky G Pohler, Phillip R Myer
Reproductive inefficiency in cattle has major impacts on overall productivity of cattle operations, increasing cost of production, and impacting the sustainability of the cattle enterprise. Decreased reproductive success and associated disease states have been correlated with the presence of specific microbes and microbial community profiles, yet details of the relationship between microbial communities and host physiology are not well known. The present study profiles and compares the microbial communities in the bovine uterus and vagina using 16S rRNA sequencing of the V1-V3 hypervariable region at the time of artificial insemination...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642744/unexpected-dominance-of-elusive-acidobacteria-in-early-industrial-soft-coal-slags
#17
Carl-Eric Wegner, Werner Liesack
Acid mine drainage (AMD) and mine tailing environments are well-characterized ecosystems known to be dominated by organisms involved in iron- and sulfur-cycling. Here we examined the microbiology of industrial soft coal slags that originate from alum leaching, an ecosystem distantly related to AMD environments. Our study involved geochemical analyses, bacterial community profiling, and shotgun metagenomics. The slags still contained high amounts of alum constituents (aluminum, sulfur), which mediated direct and indirect effects on bacterial community structure...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28642741/the-hyperarid-core-of-the-atacama-desert-an-extremely-dry-and-carbon-deprived-habitat-of-potential-interest-for-the-field-of-carbon-science
#18
Armando Azua-Bustos, Carlos González-Silva, Gino Corsini
The Atacama Desert in Chile is the driest and oldest desert on Earth, also considered one of the best Mars analog models. Here, several heterotrophic microbial communities have been discovered in its driest regions, with the ones present in the soil subsurface being one of the most interesting due to its existence in a habitat with almost no water available and almost undetectable organic carbon sources. Our recent discovery of the driest site of the Atacama known to date (and the heterotrophic microbial species that are able to survive in this site) reaffirms the opportunity to better characterize the physiological and molecular mechanisms that these species use to detect, mobilize, incorporate and use carbon under these extremely harsh conditions...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28641927/from-prokaryotes-to-cancer-glutamine-flux-in-multicellular-units
#19
REVIEW
Ayelet Erez, Ilana Kolodkin-Gal
Bacteria in nature reside in organized communities, termed biofilms, which are composed of multiple individual cells adhering to each other. Similarly, tumors are a multicellular mass with distinct cellular phenotypes. Both tumors and biofilms are considered to be an active interphase between unicellular and multicellular life states. Because both of these units depend on glutamine for growth and survival, we review here glutamine flux within them as a readout for intra- and inter-commensal metabolism. We suggest that the difference between glutamine fluxes in these cellular communities lies mainly in their global multicellular metabolic organization...
June 19, 2017: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/28641475/care-and-not-wealth-is-a-predictor-of-wasting-and-stunting-of-the-coffee-kids-of-jimma-zone-southwest-ethiopia
#20
Kalkidan Hassen Abate, Tefera Belachew
BACKGROUND: The generation of cash from agricultural products is the mainstay of the livelihood of many households in developing countries. However, critics of cash cropping have highlighted its influence on dietary diversity and availability of food at the household level, eroding the potential for optimal child caring practices. METHODS: A community-based cross-sectional survey was carried out in three randomly selected coffee-producing districts of Jimma Zone in southwest Ethiopia...
January 1, 2017: Nutrition and Health
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