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https://www.readbyqxmd.com/read/27899808/autoimmunity-to-hsp60-during-diet-induced-obesity-in-mice
#1
M E Şelli, G Wick, D C Wraith, A C Newby
Adaptive immunity has been implicated in adipose tissue inflammation, obesity and its adverse metabolic consequences. No obesity-related autoantigen has yet been identified, although heat shock protein 60 (HSP60) has been implicated in other autoimmune diseases. We investigated whether feeding a high fat diet to C57BL/6J mice would cause autoimmunity to HSP60 and whether immunomodulation with peptides from HSP60 would reverse the resulting obesity or metabolic dysfunction. Obese mice had higher circulating levels of HSP60 associated with increased T-lymphocyte proliferation responses and the emergence of circulating IgG1 and IgG2c antibody levels against HSP60...
November 30, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27899318/new-wrinkling-substrate-assay-reveals-traction-force-fields-of-leader-and-follower-cells-undergoing-collective-migration
#2
Sho Yokoyama, Tsubasa S Matsui, Shinji Deguchi
Physical forces play crucial roles in coordinating collective migration of epithelial cells, but details of such force-related phenomena remain unclear partly due to the lack of robust methodologies to probe the underlying force fields. Here we develop a method for fabricating silicone substrates that detect cellular traction forces with a high sensitivity. Specifically, a silicone elastomer is exposed to oxygen plasma under heating. Removal of the heat shrinks the substrate so as to reduce its critical buckling strain in a spatially uniform manner...
November 27, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27878078/cool-habitats-support-darker-and-bigger-butterflies-in-australian-tropical-forests
#3
Shuang Xing, Timothy C Bonebrake, Chin Cheung Tang, Evan J Pickett, Wenda Cheng, Sasha E Greenspan, Stephen E Williams, Brett R Scheffers
Morphology mediates the relationship between an organism's body temperature and its environment. Dark organisms, for example, tend to absorb heat more quickly than lighter individuals, which could influence their responses to temperature. Therefore, temperature-related traits such as morphology may affect patterns of species abundance, richness, and community assembly across a broad range of spatial scales. In this study, we examined variation in color lightness and body size within butterfly communities across hot and cool habitats in the tropical woodland-rainforest ecosystems of northeast Queensland, Australia...
November 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/27874299/cooling-effectiveness-of-a-modified-cold-water-immersion-method-after-exercise-induced-hyperthermia
#4
Katherine E Luhring, Cory L Butts, Cody R Smith, Jeffrey A Bonacci, Ramon C Ylanan, Matthew S Ganio, Brendon P McDermott
CONTEXT:  Recommended treatment for exertional heat stroke includes whole-body cold-water immersion (CWI). However, remote locations or monetary or spatial restrictions can challenge the feasibility of CWI. Thus, the development of a modified, portable CWI method would allow for optimal treatment of exertional heat stroke in the presence of these challenges. OBJECTIVE:  To determine the cooling rate of modified CWI (tarp-assisted cooling with oscillation [TACO]) after exertional hyperthermia...
November 22, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27870036/seedling-performance-covaries-with-dormancy-thresholds-maintaining-cryptic-seed-heteromorphism-in-a-fire-prone-system
#5
Ganesha S Liyanage, David J Ayre, Mark K J Ooi
The production of morphologically different seeds or fruits by the same individual plant is known as seed heteromorphism. Such variation is expected to be selected for in disturbance-prone environments to allow germination into inherently variable regeneration niches. However, there are few demonstrations that heteromorphic seed characteristics should be favored by selection or how they may be maintained. In fire-prone ecosystems, seed heteromorphism is found in the temperatures needed to break physical dormancy, with seeds responding to high or low temperatures, ensuring emergence under variable fire-regime-related soil heating...
November 2016: Ecology
https://www.readbyqxmd.com/read/27859406/meeting-report-processing-translation-decay-three-ways-to-keep-rna-sizzling
#6
Albrecht G von Arnim, Hanjo A Hellmann
This meeting report highlights key trends that emerged from a conference entitled Post-Transcriptional Gene Regulation in Plants, which was held 14-15 July 2016, as a satellite meeting of the annual meeting of the American Society of Plant Biologists in Austin, Texas. The molecular biology of RNA is emerging as an integral part of the framework for plants' responses to environmental challenges such as drought and heat, hypoxia, nutrient deprivation, light and pathogens. Moreover, the conference illustrated how a multitude of customized and pioneering omics-related technologies are being applied, more and more often in combination, to describe and dissect the complexities of gene expression at the post-transcriptional level...
December 2016: Plant, Cell & Environment
https://www.readbyqxmd.com/read/27853506/household-air-pollution-and-its-effects-on-health
#7
REVIEW
Komalkirti Apte, Sundeep Salvi
Household air pollution is a leading cause of disability-adjusted life years in Southeast Asia and the third leading cause of disability-adjusted life years globally. There are at least sixty sources of household air pollution, and these vary from country to country. Indoor tobacco smoking, construction material used in building houses, fuel used for cooking, heating and lighting, use of incense and various forms of mosquito repellents, use of pesticides and chemicals used for cleaning at home, and use of artificial fragrances are some of the various sources that contribute to household air pollution...
2016: F1000Research
https://www.readbyqxmd.com/read/27827963/electrochemical-affinity-biosensors-based-on-disposable-screen-printed-electrodes-for-detection-of-food-allergens
#8
REVIEW
Alina Vasilescu, Gilvanda Nunes, Akhtar Hayat, Usman Latif, Jean-Louis Marty
Food allergens are proteins from nuts and tree nuts, fish, shellfish, wheat, soy, eggs or milk which trigger severe adverse reactions in the human body, involving IgE-type antibodies. Sensitive detection of allergens in a large variety of food matrices has become increasingly important considering the emergence of functional foods and new food manufacturing technologies. For example, proteins such as casein from milk or lysozyme and ovalbumin from eggs are sometimes used as fining agents in the wine industry...
November 5, 2016: Sensors
https://www.readbyqxmd.com/read/27816915/development-of-the-oriental-latrine-fly-chrysomya-megacephala-diptera-calliphoridae-at-five-constant-temperatures
#9
S V Gruner, D H Slone, J L Capinera, M P Turco
Chrysomya megacephala (Fabricius) is a forensically important fly that is found throughout the tropics and subtropics. We calculated the accumulated development time and transition points for each life stage from eclosion to adult emergence at five constant temperatures: 15, 20, 25, 30, and 35 °C. For each transition, the 10th, 50th, and 90th percentiles were calculated with a logistic linear model. The mean transition times and % survivorship were determined directly from the raw laboratory data. Development times of C...
November 4, 2016: Journal of Medical Entomology
https://www.readbyqxmd.com/read/27810678/short-term-association-between-environmental-factors-and-hospital-admissions-due-to-dementia-in-madrid
#10
C Linares, D Culqui, R Carmona, C Ortiz, J Díaz
BACKGROUND: Spain has one of the highest proportions of dementia in the world among the population aged 60 years or over. Recent studies link various environmental factors to neurocognitive-type diseases. This study sought to analyse whether urban risk factors such as traffic noise, pollutants and heat waves might have a short-term impact on exacerbation of symptoms of dementia, leading to emergency hospital admission. MATERIAL AND METHODS: We conducted a longitudinal ecological time-series study, with the dependent variable being the number of daily dementia-related emergency (DDE) hospital admissions to Madrid municipal hospitals (ICD-10 codes 290...
January 2017: Environmental Research
https://www.readbyqxmd.com/read/27775462/reduced-ability-to-detect-surface-related-biofilm-bacteria-after-antibiotic-exposure-under-in-vitro-conditions
#11
Christen Ravn, Ulrika Furustrand Tafin, Bertrand Bétrisey, Søren Overgaard, Andrej Trampuz
Background and purpose - Antibiotic treatment of patients before specimen collection reduces the ability to detect organisms by culture. We investigated the suppressive effect of antibiotics on the growth of non-adherent, planktonic, and surface-related biofilm bacteria in vitro by using sonication and microcalorimetry methods. Patients and methods - Biofilms of Staphylococcus aureus, S. epidermidis, Escherichia coli, and Propionibacterium acnes were formed on porous glass beads and exposed for 24 h to antibiotic concentrations from 1 to 1,024 times the minimal inhibitory concentration (MIC) of vancomycin, daptomycin, rifampin, flucloxacillin, or ciprofloxacin...
December 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27775141/impurity-effects-on-solid-solid-transitions-in-atomic-clusters
#12
B E Husic, D Schebarchov, D J Wales
We use the harmonic superposition approach to examine how a single atom substitution affects low-temperature anomalies in the vibrational heat capacity (CV) of model nanoclusters. Each anomaly is linked to competing solidlike "phases", where crossover of the corresponding free energies defines a solid-solid transition temperature (Ts). For selected Lennard-Jones clusters we show that Ts and the corresponding CV peak can be tuned over a wide range by varying the relative atomic size and binding strength of the impurity, but excessive atom-size mismatch can destroy a transition and may produce another...
October 24, 2016: Nanoscale
https://www.readbyqxmd.com/read/27763840/risk-and-protective-factors-for-heat-related-events-among-older-adults-of-southern-quebec-canada-the-nuage-study
#13
Émélie Laverdière, Hélène Payette, Pierrette Gaudreau, José A Morais, Bryna Shatenstein, Mélissa Généreux
OBJECTIVES: Extreme heat is known to increase heat-related health outcomes (HRHO). Incidence and predictors of HRHO were examined among older adults living in Quebec (Canada). METHOD: This prospective five-year study used data from the first follow-up of community-dwelling older adults from the NuAge cohort (2005-2006), located in three health regions of Southern Quebec. Medical, social and environmental factors, identified in Health Canada guidelines (2011), were used to develop the Older Adult Health Vulnerability Index (OAHVI)...
October 20, 2016: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
https://www.readbyqxmd.com/read/27757417/sustained-drag-reduction-in-a-turbulent-flow-using-a-low-temperature-leidenfrost-surface
#14
Dhananjai Saranadhi, Dayong Chen, Justin A Kleingartner, Siddarth Srinivasan, Robert E Cohen, Gareth H McKinley
Skin friction drag contributes a major portion of the total drag for small and large water vehicles at high Reynolds number (Re). One emerging approach to reducing drag is to use superhydrophobic surfaces to promote slip boundary conditions. However, the air layer or "plastron" trapped on submerged superhydrophobic surfaces often diminishes quickly under hydrostatic pressure and/or turbulent pressure fluctuations. We use active heating on a superhydrophobic surface to establish a stable vapor layer or "Leidenfrost" state at a relatively low superheat temperature...
October 2016: Science Advances
https://www.readbyqxmd.com/read/27743891/altered-meristem-program1-has-conflicting-effects-on-the-tolerance-to-heat-shock-and-symptom-development-after-pseudomonas-syringae-infection
#15
Min Woo Lee, Rira Seo, Yu Jeong Lee, Ju Hye Bae, Jung-Kwon Park, Joung-Hahn Yoon, Jei Wan Lee, Ho Won Jung
An Arabidopsis thaliana ALTERED MERISTEM PROGRAM1 (AtAMP1), which encodes a putative glutamate carboxypeptidase, not only controls shoot apical meristem development, but also is involved in tolerance response to abiotic stresses. Here, we introduce a novel mutant; named amp1-32 that is a phenocopier to previously isolated different amp1 mutant alleles. Interestingly, tiny leaves were continuously developed at the bottom of pre-emerged leaves in the amp1-32. The amp1-32 mutant was less sensitive to heat shock treatment lasting for 3 h, whereas disease symptoms were severely developed in the mutant after Pseudomonas syringae infection...
October 12, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27708412/steady-flow-and-heat-transfer-analysis-of-phan-thein-tanner-fluid-in-double-layer-optical-fiber-coating-analysis-with-slip-conditions
#16
Zeeshan Khan, Rehan Ali Shah, Saeed Islam, Bilal Jan, Muhammad Imran, Farisa Tahir
Modern optical fibers require double-layer coating on the glass fiber to provide protection from signal attenuation and mechanical damage. The most important plastic resins used in wires and optical fibers are plastic polyvinyl chloride (PVC) and low-high density polyethylene (LDPE/HDPE), nylon and Polysulfone. In this paper, double-layer optical fiber coating is performed using melt polymer satisfying PTT fluid model in a pressure type die using wet-on-wet coating process. The assumption of fully developed flow of Phan-Thien-Tanner (PTT) fluid model, two-layer liquid flows of an immiscible fluid is modeled in an annular die, where the fiber is dragged at a higher speed...
October 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27706089/susceptibility-to-heat-related-fluid-and-electrolyte-imbalance-emergency-department-visits-in-atlanta-georgia-usa
#17
Leila Heidari, Andrea Winquist, Mitchel Klein, Cassandra O'Lenick, Andrew Grundstein, Stefanie Ebelt Sarnat
Identification of populations susceptible to heat effects is critical for targeted prevention and more accurate risk assessment. Fluid and electrolyte imbalance (FEI) may provide an objective indicator of heat morbidity. Data on daily ambient temperature and FEI emergency department (ED) visits were collected in Atlanta, Georgia, USA during 1993-2012. Associations of warm-season same-day temperatures and FEI ED visits were estimated using Poisson generalized linear models. Analyses explored associations between FEI ED visits and various temperature metrics (maximum, minimum, average, and diurnal change in ambient temperature, apparent temperature, and heat index) modeled using linear, quadratic, and cubic terms to allow for non-linear associations...
October 2, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27704519/exertional-heat-stroke-about-4-cases
#18
Mohamed Taha Khoufi, Ali Mrabet, Abderraouf Ben Mansour, Khaled Lamine, Mustapha Ferjani, Mondher Yedeas
Exertional heat stroke is defined as hyperthermia associated with neurological signs related to intense physical activity performed in a hot environment. This is a medical emergency and life-threatening. In this study, we investigated four cases of exertional heat stroke hospitalized at the military hospital in Tunis (Tunisia) to describe the clinical, therapeutic and preventive characteristics and factors favoring this disease. Four young soldiers, 23 to 44 years older, have developed Exertional heat stroke after Intense and prolonged exercise...
April 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/27698292/climate-change-impact-on-microclimate-of-work-environment-related-to-occupational-health-and-productivity
#19
Enrico Marchetti, Pasquale Capone, Daniela Freda
INTRODUCTION: Climate change is a global emergency that influences human health and occupational safety. Global warming characterized by an increase in temperature of the ambience and humidity affects human health directly impairing body thermoregulation with serious consequences: dehydration, fatigue, heat stroke and even death. Several studies have demonstrated negative effects of climate change on working populations in a wide variety of workplaces with particular regard to outdoor and uncooled indoor workplaces...
July 2016: Annali Dell'Istituto Superiore di Sanità
https://www.readbyqxmd.com/read/27663056/ryr1-related-rhabdomyolysis-a-common-but-probably-underdiagnosed-manifestation-of-skeletal-muscle-ryanodine-receptor-dysfunction
#20
N C Voermans, M Snoeck, H Jungbluth
Mutations in the skeletal muscle ryanodine receptor (RYR1) gene are associated with a wide spectrum of inherited myopathies presenting throughout life. Malignant hyperthermia susceptibility (MHS)-related RYR1 mutations have emerged as a common cause of exertional rhabdomyolysis, accounting for up to 30% of rhabdomyolysis episodes in otherwise healthy individuals. Common triggers are exercise and heat and, less frequently, viral infections, alcohol and drugs. Most subjects are normally strong and have no personal or family history of malignant hyperthermia...
October 2016: Revue Neurologique
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