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https://www.readbyqxmd.com/read/28922801/effect-of-severe-weather-events-on-the-shedding-of-shiga-toxigenic-escherichia-coli-in-slaughter-cattle-and-phenotype-of-serogroup-o157-isolates
#1
Kim Stanford, Tim Reuter, Susan J Bach, Linda Chui, Angela Ma, Cheyenne C Conrad, Renata Tostes, Tim A McAllister
High-event periods (HEPs) occur sporadically when beef carcasses and meat have episodes of acute contamination with Shiga toxin-producing Escherichia coli (STEC). In this study, severe weather events were investigated as catalysts for HEPs based on PCR and isolate prevalence of seven E. coli serogroups in slaughter cattle feces. Winter ambient temperatures with daily means 10.5oC warmer or 12.3°C colder than seasonal norms (-10.4°C) most altered STEC shedding. Fecal samples yielded increased proportions (P < 0...
September 1, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28922751/inositol-hexakis-phosphate-is-the-seasonal-phosphorus-reservoir-in-the-deciduous-woody-plant-populus-alba-l
#2
Yuko Kurita, Kei'ichi Baba, Miwa Ohnishi, Ryosuke Matsubara, Keiko Kosuge, Aya Anegawa, Chizuko Shichijo, Kimitsune Ishizaki, Yasuko Kaneko, Masahiko Hayashi, Toshinobu Suzaki, Hidehiro Fukaki, Tetsuro Mimura
Seasonal recycling of nutrients is an important strategy for deciduous perennials. Deciduous perennials maintain and expand their nutrient pools by the autumn nutrient remobilization and the subsequent winter storage throughout their long life. Phosphorus (P), one of the most important elements in living organisms, is remobilized from senescing leaves during autumn in deciduous trees. However, it remains unknown how phosphate is stored over winter. Here we show that in poplar trees (Populus alba L.), organic phosphates are accumulated in twigs from late summer to winter, and that IP6 (myo-inositol-1,2,3,4,5,6-hexakis phosphate: phytic acid) is the primary storage form...
September 1, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28922715/pm2-5-components-and-outpatient-visits-for-asthma-a-time-stratified-case-crossover-study-in-a-suburban-area
#3
Chau-Ren Jung, Li-Hao Young, Hui-Tsung Hsu, Ming-Yeng Lin, Yu-Cheng Chen, Bing-Fang Hwang, Perng-Jy Tsai
The effects of fine particles (PM2.5) on asthma have been widely confirmed by epidemiological research studies. However, a limited number of studies have investigated the relationship between exposure to different PM2.5 components and asthma. We characterized the PM2.5 components in a suburban site of central Taiwan and conducted a time-stratified case-crossover study to elaborate the effects of daily concentration of each PM2.5 component on asthma outpatient visits. We retrieved asthma outpatient claims for individuals less than 20 years old with a residential address in the Shalu district, Taiwan, from the National Health Insurance Research Database during 2000-2010...
September 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28922621/a-21-winter-seasons-retrospective-study-of-antibody-response-after-influenza-vaccination-in-elderly-60-85%C3%A2-years-old-and-very-elderly-85%C3%A2-years-old-institutionalized-subjects
#4
Emilia Nunzi, Anna Maria Iorio, Barbara Camilloni
Influenza vaccination is considered the best mean for preventing the higher rates of mortality associated with influenza virus infection in the elderly as compared with younger people. Since the number of very elderly subjects, aged >85 years, is rapidly increasing, and some authors reported increments in influenza-associated mortality with age, the aim of this study was to increase the limited information available on the immunogenicity of the influenza vaccines in this age group. This was a retrospective study which analyzed the antibody response induced by commercially available trivalent inactivated influenza vaccines in 1491 elderly subjects (60-85 years old) and 1139 very elderly subjects (>85 years old) during 21 winter seasons included between 1993-1994 and 2014-2015...
September 18, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28922585/climatic-and-anthropogenic-drivers-of-northern-amazon-fires-during-the-2015-2016-el-ni%C3%A3-o-event
#5
Marisa G Fonseca, Liana O Anderson, Egidio Arai, Yosio E Shimabukuro, Haron A M Xaud, Maristela R Xaud, Nima Madani, Fabien H Wagner, Luiz E O C Aragão
The strong El Niño Southern Oscillation (ENSO) event that occurred in 2015/2016 caused extreme drought in the northern Brazilian Amazon, especially in the state of Roraima, increasing fire occurrence. Here we map the extent of precipitation and fire anomalies and quantify the effects of climatic and anthropogenic drivers on fire occurrence during the 2015/2016 dry season (from December 2015 to March 2016) in the state of Roraima. To achieve these objectives we first estimated the spatial pattern of precipitation anomalies, based on long-term data from the TRMM (Tropical Rainfall Measuring Mission), and the fire anomaly, based on MODIS (Moderate Resolution Imaging Spectroradiometer) active fire detections during the referred period...
September 18, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28922490/risk-factors-for-football-injuries-in-young-players-aged-7-to-12-years
#6
Roland Rössler, Astrid Junge, Jiri Chomiak, Karel Němec, Jiri Dvorak, Eric Lichtenstein, Oliver Faude
OBJECTIVES: Football (soccer) is very popular amongst children. Little is known about risk factors for football injuries in children. The aim was to analyse potential injury risk factors in 7 to 12 year old players. DESIGN: Prospective epidemiological study. METHODS: We collected prospective data in Switzerland and the Czech Republic over two seasons. Coaches reported exposure of players (in hours), absence, and injury data via an internet-based registration system...
September 18, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28922412/walker-occupancy-has-an-impact-on-changing-airborne-bacterial-communities-in-an-underground-pedestrian-space-as-small-dust-particles-increased-with-raising-both-temperature-and-humidity
#7
Torahiko Okubo, Takako Osaki, Eriko Nozaki, Akira Uemura, Kouhei Sakai, Mizue Matushita, Junji Matsuo, Shinji Nakamura, Shigeru Kamiya, Hiroyuki Yamaguchi
Although human occupancy is a source of airborne bacteria, the role of walkers on bacterial communities in built environments is poorly understood. Therefore, we visualized the impact of walker occupancy combined with other factors (temperature, humidity, atmospheric pressure, dust particles) on airborne bacterial features in the Sapporo underground pedestrian space in Sapporo, Japan. Air samples (n = 18; 4,800L/each sample) were collected at 8:00 h to 20:00 h on 3 days (regular sampling) and at early morning / late night (5:50 h to 7:50 h / 22:15 h to 24:45 h) on a day (baseline sampling), and the number of CFUs (colony forming units) OTUs (operational taxonomic units) and other factors were determined...
2017: PloS One
https://www.readbyqxmd.com/read/28922083/strategies-in-recommending-influenza-vaccination-in-europe-and-us
#8
Caterina Rizzo, Gianni Rezza, Walter Ricciardi
There is potential for influenza vaccine programmes to make a substantial impact on the disease burden. The World Health Organization (WHO) has identified young children, pregnant women, persons with chronic medical conditions, and the elderly as being at risk for severe influenza disease and therefore important groups to be considered for influenza vaccination. Applying the methodology of scoping review of grey and scientific literature we described the European and the US approach to influenza vaccine prevention...
September 18, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28922020/seasonal-and-weather-variation-of-sleep-and-physical-activity-in-12-14-year-old-children
#9
Mirja Quante, Rui Wang, Jia Weng, Emily R Kaplan, Michael Rueschman, Elsie M Taveras, Sheryl L Rifas-Shiman, Matthew W Gillman, Susan Redline
BACKGROUND: Understanding variation in physical activity (PA) and sleep is necessary to develop novel intervention strategies targeting adolescents' health behaviors. We examined the extent to which PA and sleep vary by aspects of the physical environment. PARTICIPANTS: We performed a cross-sectional analysis of 669 adolescents in the Project Viva cohort. METHODS: We estimated total PA, sleep duration, sleep efficiency and sleep midpoint timing from wrist accelerometers...
September 18, 2017: Behavioral Sleep Medicine
https://www.readbyqxmd.com/read/28921823/encoding-seasonal-information-in-a-two-oscillator-model-of-the-multi-oscillator-circadian-clock
#10
Jihwan Myung, Scott D Pauls
The suprachiasmatic nucleus (SCN) is a collection of about 10,000 neurons, each of which functions as a circadian clock with slightly different periods and phases, that work in concert to form and maintain the master circadian clock for the organism. The diversity among neurons confers on the SCN the ability to robustly encode both the 24-hour light pattern as well as the seasonal time. Cluster synchronization brings the different neurons into line and reduces the large population to essentially two oscillators, coordinated by a macroscopic network motif of asymmetric repulsive-attractive coupling...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28921779/local-pre-adaptation-to-disturbance-and-inbreeding-environment-interactions-affect-colonization-abilities-of-diploid-and-tetraploid-centaurea-stoebe
#11
Christoph Rosche, Isabell Hensen, Susanne Lachmuth
Primary colonization in invasive ranges most commonly occurs in disturbed habitats, where anthropogenic disturbance may cause physical damage in plants. The tolerance to such damage may differ between cytotypes and among populations as a result of differing population histories (adaptive differentiation between ruderal vs. natural habitats). Moreover, founder populations often experience inbreeding depression, the effects of which may increase through physical damage due to inbreeding-environment interactions...
September 18, 2017: Plant Biology
https://www.readbyqxmd.com/read/28921572/production-level-risk-factors-for-syncytial-hepatitis-in-farmed-tilapia-oreochromis-niloticus-l
#12
R M Kabuusu, A T Aire, D F Stroup, C N L Macpherson, H W Ferguson
Syncytial hepatitis (SHT) is an emerging viral disease of tilapia characterized by significant morbidity and mortality. This study aimed to establish the production-level risk factors associated with presence and severity of SHT. Production factors were analysed during multiple outbreaks of SHT that occurred between 2011 and 2013 on a single tilapia farm in Ecuador and compared with the year 2010 before the SHT outbreaks. Relative risks, t tests, modified Poisson and forward stepwise linear regression analyses were performed using EPIINFO™...
September 17, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28921509/baff-augments-iga2-and-il-10-production-by-tlr7-8-stimulated-total-peripheral-blood-b-cells
#13
Gerco den Hartog, Thijs L J van Osch, Martijn Vos, Ben Meijer, Huub F J Savelkoul, R J Joost van Neerven, Sylvia Brugman
Class-switching of B cells to IgA can be induced via both T cell-dependent and T cell-independent mechanisms. IgA is most predominantly produced mucosally and is important for combating infections and allergies. In contrast to mice, humans have two forms of IgA; IgA1 and IgA2 with diverse tissue distribution. In early life, IgA levels might be sub-optimal especially during the fall season when bacterial and viral infections are more common. Therefore, we investigated using human B cells whether T cell-independent factors -promoting cell survival, class switching and immunoglobulin secretion- BAFF, APRIL, IL-10 and retinoic acid can boost IgA production in the context of viral or bacterial infection...
September 17, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28920804/trichinella-infections-in-red-foxes-vulpes-vulpes-and-golden-jackals-canis-aureus-in-six-districts-of-serbia
#14
Marko Dmitric, Dejan Vidanovic, Nikola Vaskovic, Kazimir Matovic, Milanko Sekler, Zoran Debeljak, Nedjeljko Karabasil
Wild animals, including red foxes (Vulpes vulpes) and golden jackals (Canis aureus), are the most important reservoirs of Trichinella spp. Although the red fox is considered one of the main reservoirs of Trichinella spp. in Europe, only a few animals have been examined in Serbia. The present study assessed Trichinella spp. infection in red foxes and golden jackals from the six districts in Serbia. Thirty-seven carcasses of red foxes and 13 carcasses of golden jackals shot during the official hunting season were examined...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920802/summer-and-winter-vitamin-d3-levels-in-seven-platyrrhine-species-housed-at-a-british-zoo-with-reference-to-natural-uvb-levels
#15
Rowena Killick, Richard Saunders, Sharon P Redrobe
Serum samples were collected from 24 platyrrhines of seven diurnal species housed with outdoor access at Bristol Zoo Gardens (United Kingdom) to test 25-hydroxyvitamin D3 (25OHD3) levels as part of the veterinary department's preventative health care program. Samples were collected in August 2008 (summer) and January 2009 (winter) to examine the effect of season on 25OHD3 levels. Dietary levels of vitamin D3 remained the same throughout the study period and fell within the range of 2000-4000 IU/kg dry matter, in accordance with current primate guidelines...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920571/recurrent-seasonal-outbreak-of-an-emerging-serotype-of-shiga-toxin-producing-escherichia-coli-stec-o55-h7-stx2a-in-the-south-west-of-england-july-2014-to-september-2015
#16
Noëleen McFarland, Nick Bundle, Claire Jenkins, Gauri Godbole, Amy Mikhail, Tim Dallman, Catherine O'Connor, Noel McCarthy, Emer O'Connell, Juli Treacy, Girija Dabke, James Mapstone, Yvette Landy, Janet Moore, Rachel Partridge, Frieda Jorgensen, Caroline Willis, Piers Mook, Chas Rawlings, Richard Acornley, Charlotte Featherstone, Sharleen Gayle, Joanne Edge, Eleanor McNamara, Jeremy Hawker, Sooria Balasegaram
The first documented British outbreak of Shiga toxin-producing Escherichia coli (STEC) O55:H7 began in the county of Dorset, England, in July 2014. Since then, there have been a total of 31 cases of which 13 presented with haemolytic uraemic syndrome (HUS). The outbreak strain had Shiga toxin (Stx) subtype 2a associated with an elevated risk of HUS. This strain had not previously been isolated from humans or animals in England. The only epidemiological link was living in or having close links to two areas in Dorset...
September 7, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28920410/effect-of-seasonal-changes-on-fertility-parameters-of-holstein-dairy-cow-in-subtropical-climate-of-taiwan
#17
Wen Bor Liu, Huo Cheng Peh, Chien Kai Wang, Mancoba Christopher Mangwe, Chih Feng Chen, Hsin I Chiang
Objective: The purpose of this retrospective study was to investigate the relationship between temperature-humidity index (THI), season, and conception rate (CR) of Holstein cows in central Taiwan. Methods: The mean performance and number of observations were statistically evaluated for various parameters, including age at first service, number of days open, gestation length, CR, and calving interval for different parities. Results: The results indicate that the mean age at first service was 493...
September 18, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28920168/the-online-measured-black-carbon-aerosol-and-source-orientations-in-the-nam-co-region-tibet
#18
Xin Zhang, Jing Ming, Zhongqin Li, Feiteng Wang, Guoshuai Zhang
Equivalent black carbon (eBC) mass concentrations were measured by an aethalometer (AE-31) in the Nam Co, central Tibet from 2010 to 2014. Different from previous filter-sampling studies (Ming et al., J Environ Sci 22(11):1748-1756, 2010; Zhao et al., Environ Sci Pollut Res 20:5827-5838, 2013), the first high-resolution online eBC measurement conducted in central Tibet is reported here, allowing to discuss the diurnal variations as well as seasonal variabilities of eBC. Average daily eBC concentration was 74 ± 50 ng/m(3), reflecting a global background level...
September 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28920165/distinctive-patterns-in-the-taxonomical-resolution-of-bacterioplankton-in-the-sediment-and-pore-waters-of-contrasted-freshwater-lakes
#19
J Keshri, A S Pradeep Ram, T Sime-Ngando
Bacteria assemblages in lake sediments play a key role in various biogeochemical processes, yet their association with interstitial pore waters has been scarcely investigated. In this study, we utilized Illumina next-generation amplicon sequencing of the 16S rRNA gene to characterize the seasonal bacterial communities in the sediments and pore waters of three contrasted temperate freshwater lakes, namely Pavin, Aydat, and Grangent (French Massif Central). Despite occupying seemingly similar habitats, bacterial communities differed substantially between sediments and pore waters at all seasons with low sharing of operational taxonomic units (OTUs, 6...
September 17, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28920109/papillon-lef%C3%A3-vre-syndrome-a-series-of-three-cases-in-the-same-family-and-a-literature-review
#20
Jasbir D Upadhyaya, Dustin Pfundheller, Mohammed N Islam, Indraneel Bhattacharyya
Papillon-Lefèvre syndrome (PLS) is a rare autosomal recessive disorder that exhibits palmoplantar keratosis and early severe periodontitis. The oral disease affects both the primary and permanent dentitions leading to premature exfoliation of teeth. Various etiologic factors, such as genetic mutations, immunologic alterations, and bacteria have been implicated in PLS. Genetic mutations leading to the loss of function of cathepsin C (CTSC) gene, located on chromosome 11q14, is considered pivotal in this condition...
2017: Quintessence International
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