30,125 results match your criteria Fire Ant Bites


Degree of optical polarization as a tool for detecting melanoma: proof of principle.

J Biomed Opt 2018 Dec;23(12):1-7

University of British Columbia, School of Biomedical Engineering, Vancouver, Canada.

Determining the optical polarization properties of a skin lesion is a proposed method to differentiate melanoma from other skin lesions. We developed an in vivo Stokes polarimetry probe that fires a laser of known polarization at the skin and measures the Stokes parameters of the backscattered light in one shot. From these measured Stokes parameters, we can calculate the degree of polarization (DOP). Read More

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December 2018
1 Read

Calibration and validation of a novel passive sampling device for the time integrative monitoring of per- and polyfluoroalkyl substances (PFASs) and precursors in contaminated groundwater.

J Hazard Mater 2018 Dec 7;366:423-431. Epub 2018 Dec 7.

Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, 20 Cornwall street, Woolloongabba, Queensland, 4102, Australia.

Per-and polyfluoroalkyl substances (PFASs) as key components in aqueous film forming foams (AFFF) have led to growing incidences of environmental contamination. The aim of this study was to investigate a novel diffusion based passive sampling device comprising of microporous polyethylene (PE) for the long-term time-integrative monitoring of PFASs in groundwater systems. PE passive samplers (PEs) were deployed for 83 d and calibrated at five AFFF impacted groundwater sites representing different PFASs concentration levels (ΣPFAS 0. Read More

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December 2018

Role of CCL5 and CCR5 gene polymorphisms in epidermal growth factor receptor signalling blockade in metastatic colorectal cancer: analysis of the FIRE-3 trial.

Eur J Cancer 2018 Dec 13;107:100-114. Epub 2018 Dec 13.

Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1441 Eastlake Avenue, Los Angeles, CA 90033, USA.

Background: Epidermal growth factor receptor signalling blockade increases CCL5 expression that regulates either the anti-tumour immune response or tumour progression. We investigated the potential role of CCL5/CCR5 axis in cetuximab-based treatment in metastatic colorectal cancer (mCRC) patients.

Patients And Methods: Genomic DNA was extracted from 491 samples of two different cohorts with KRAS wild-type mCRC from the FIRE-3 trial: an evaluation cohort of 244 patients receiving cetuximab plus FOLFIRI and a control cohort of 247 patients receiving bevacizumab plus FOLFIRI. Read More

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December 2018

Discovery of N-substituted 7-azaindoles as Pan-PIM kinases inhibitors - Lead optimization - Part III.

Bioorg Med Chem Lett 2018 Dec 10. Epub 2018 Dec 10.

Oncology Biology, Sanofi, 270 Albany Street, Cambridge MA 02139, United States.

N-substituted azaindoles were discovered as promising pan-PIM inhibitors. Lead optimization is described en route toward the identification of a clinical candidate. Modulation of physico-chemical properties allowed to solve inherent hERG and permeability liabilities. Read More

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December 2018
4 Reads

Insect toxins - selective pharmacological tools and drug/chemical leads.

Curr Opin Insect Sci 2018 Dec 9;30:93-98. Epub 2018 Oct 9.

Centre for Respiratory Biology, UCL Respiratory, University College London, Rayne Building, 5 University Street, London WC1E 6JF, UK. Electronic address:

Insect toxins comprise a diverse array of chemicals ranging from small molecules, polyamines and peptide toxins. Many target nervous system and neuromuscular ion channels and so rapidly affect the behaviour of animals to which the toxin is applied or injected. Other modes of action have also been identified. Read More

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December 2018

Assessment of confined space entry and rescue training for aircraft rescue and fire fighting (ARFF) members in the United States.

J Safety Res 2018 Dec 5;67:77-82. Epub 2018 Oct 5.

Embry-Riddle Aeronautical University, Worldwide Campus College of Aeronautics, Department of Aeronautics Graduate Studies, Daytona Beach, FL, USA.

Introduction: Fire and emergency service workers, including Aircraft Rescue and Fire Fighting members, may be called on to perform confined space entry and rescue operations. The purpose of the present study was to develop a comprehensive and valid understanding of the present state of confined space entry and rescue training effectiveness and resultant compliance or use of best practices among trained Aircraft Rescue and Fire Fighting personnel.

Method: The study used a convergent, parallel mixed-methods approach. Read More

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December 2018

Decreasing residential fire death rates and the association with the prevalence of adult cigarette smoking - United States, 1999-2015.

J Safety Res 2018 Dec 19;67:197-201. Epub 2018 Jun 19.

Office on Smoking and Health, National Center for Chronic Disease Prevention and Health Promotion, CDC, United States of America.

Introduction: Each year from 1999 through 2015, residential fires caused between 2,000 and 3,000 deaths in the U.S., totaling approximately 45,000 deaths during this period. Read More

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December 2018

Fabrication of innovative thermoplastic starch bio-elastomer to achieve high toughness poly(butylene succinate) composites.

Carbohydr Polym 2019 Feb 17;206:827-836. Epub 2018 Nov 17.

School of Mechanical and Automotive, South China University of Technology, Guangdong Guangzhou 510640, China.

Sustainable biodegradable polymers with high performances is the optimized alternatives for resolving environmental key issues evoked by petroleum-based polymer. A novel bio-based elastomer was designed and developed using reactive extrusion for the mixtures of starch, glycerol and tartaric acid (TPS-TA). Then TPS-TA was extruded with PBS (30:70, wt%) to fabricate the bio-composites and the impact strength of PBS/TPS-TA was superior to that of PBS. Read More

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February 2019

Thermally stable and green cellulose-based composites strengthened by styrene-co-acrylate latex for lithium-ion battery separators.

Carbohydr Polym 2019 Feb 12;206:801-810. Epub 2018 Nov 12.

Lithium Battery Product Quality Supervision and Inspection Center, Zaozhuang, 277000, China.

In this work, a thermally stable and eco-friendly separator composed of polyvinyl alcohol modified cellulose/styrene-co-acrylate composite (pCSA) was prepared via a facile and cost-effective phase inversion process. The results indicated that styrene-co-acrylate (SA) endowed the membrane with more network junctions, thereby, improving the film formation of membrane. Polyvinyl alcohol was used to further improve the electrolyte uptake of membrane, which was crucial for high electrical conductivity. Read More

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February 2019

Effect of genipin crosslinked layer-by-layer self-assembled coating on the thermal stability, flammability and wash durability of cotton fabric.

Carbohydr Polym 2019 Feb 13;206:396-402. Epub 2018 Nov 13.

Institute of Environmental Materials and Applications, College of Materials and Environmental Engineering, Hangzhou Dianzi University, 310018 Hangzhou, PR China. Electronic address:

A crosslinked and flame retardant coating was fabricated by layer-by-layer self-assembly on cotton fabric. The coated fabric was treated using positively charged polyethylenimine (PEI) and negatively charged hypophosphorous acid-modified chitosan (HACH) with subsequent crosslinking with genipin. The thermal stability and flammability of the treated cotton fabric were investigated by thermogravimetric analysis (TGA), the horizontal flame test and microscale combustion calorimetry. Read More

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February 2019

Evaluation of an untargeted chemometric approach for the source inference of ignitable liquids in forensic science.

Forensic Sci Int 2018 Dec 5;295:8-18. Epub 2018 Dec 5.

UMR Ingénierie Procédés Aliments, AgroParisTech, Inra, Université Paris-Saclay, 91300 Massy, France. Electronic address:

Recent research efforts in the domain of fire debris analysis have been mainly oriented towards the development of innovative analytical procedures and chemometric approaches for the detection and classification of ignitable liquids in fire specimens according to the ASTM E1618. However, less attention has been brought to the question of the source inference of ignitable liquids. Infer the identity of source of ignitable liquids recovered from arson sites is still a challenging and ongoing research area. Read More

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December 2018

Spike-timing-dependent plasticity learning of coincidence detection with passively integrated memristive circuits.

Nat Commun 2018 Dec 14;9(1):5311. Epub 2018 Dec 14.

Electrical and Computer Engineering Department, UC Santa Barbara, Santa Barbara, CA, 93106-9560, USA.

Spiking neural networks, the most realistic artificial representation of biological nervous systems, are promising due to their inherent local training rules that enable low-overhead online learning, and energy-efficient information encoding. Their downside is more demanding functionality of the artificial synapses, notably including spike-timing-dependent plasticity, which makes their compact efficient hardware implementation challenging with conventional device technologies. Recent work showed that memristors are excellent candidates for artificial synapses, although reports of even simple neuromorphic systems are still very rare. Read More

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December 2018

G protein-coupled receptors in arthropod vectors: omics and pharmacological approaches to elucidate ligand-receptor interactions and novel organismal functions.

Curr Opin Insect Sci 2018 Oct 26;29:12-20. Epub 2018 May 26.

Department of Electrical and Computer Engineering, TAMU, College Station, TX 77843-3128, United States.

Regulation of many physiological processes in animals, certainly those controlled by neuropeptide hormones, involves G protein-coupled receptors (GPCRs). Our work focusing on endocrine regulation of diuresis and water balance in mosquitoes and ticks started in 1997 with the kinin receptor, at the dawn of the omics era. After the genomic revolution, we began work on the endocrinology of reproduction in the red imported fire ant. Read More

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October 2018

Global change and the importance of fire for the ecology and evolution of insects.

Curr Opin Insect Sci 2018 Oct 31;29:110-116. Epub 2018 Jul 31.

Department of Biological Sciences, University of Denver, 2050 E Iliff Ave, Boettcher West, Denver, CO 80210, USA. Electronic address:

Climate change is drastically altering global fire regimes, which may affect the structure and function of insect communities. Insect responses to fire are strongly tied to fire history, plant responses, and changes in species interactions. Many insects already possess adaptive traits to survive fire or benefit from post-fire resources, which may result in community composition shifting toward habitat and dietary generalists as well as species with high dispersal abilities. Read More

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October 2018

The spark that might have ignited the fire: The association of cognitive and psychological factors with state anxiety in light of the Syrian-Israeli incident.

Psychiatry Res 2018 Dec 28;270:815-821. Epub 2018 Oct 28.

School of Social Work, Ariel University, Ariel, 40700, Israel. Electronic address:

The current study aimed to explore Israelis' state anxiety due to a Syrian-Israeli incident that occurred on February 10, 2018, when an Israeli F-16 fighter jet was shot down by Syrian air defense forces. In line with the "looming vulnerability" model which emphasizes the importance of the dynamic nature of psychologically threatening situations, the following psychological factors were suggested: associative memory of prior events, worries of future war, sense of safety, and death anxiety. We employed two cross-sectional points of time in our assessment: 36 hours and three months after the incident. Read More

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December 2018

[Innovative New Evacuation Concept with Emergency Mattresses].

Z Orthop Unfall 2018 Dec 14;156(6):723-724. Epub 2018 Dec 14.

Sicherheitsmanagement, Klinikverbund Südwest GmbH, Sindelfingen.

Indication: In-hospital patients with limited mobility are extremely vulnerable in cases of emergency or fire. In the past, several large fires in multi-story hospitals have resulted in deaths.

Methods: For this reason, we have developed an evacuation mattress that incorporates the functions of an evacuation towel with the comfort of a normal mattress. Read More

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December 2018
2 Reads

Pre-harvest internalization and surface survival of Salmonella and Escherichia coli O157:H7 sprayed onto different lettuce cultivars under field and growth chamber conditions.

Int J Food Microbiol 2018 Dec 4;291:197-204. Epub 2018 Dec 4.

Department of Horticulture, University of Georgia, 2360 Rainwater Rd., Tifton, GA 31793-5766, USA.

Plant genotype has been advocated to have an important role in the fate of enteric pathogens residing in lettuce foliage. This study was therefore undertaken under the premise that different pathogen responses could occur in lettuce cultivars with cultivar selection being one of several hurdles in an overall strategy for controlling foodborne pathogens on field-grown produce. Up to eight lettuce cultivars ('Gabriella', 'Green Star', 'Muir', 'New Red Fire', 'Coastal Star', 'Starfighter', 'Tropicana', and 'Two Star') were examined in these experiments in which the plants were subjected to spray contamination of their foliage with pathogens. Read More

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December 2018

Using a coupled dynamic factor - random forest analysis (DFRFA) to reveal drivers of spatiotemporal heterogeneity in the semi-arid regions of southern Africa.

PLoS One 2018 14;13(12):e0208400. Epub 2018 Dec 14.

Department of Environmental Engineering Sciences, University of Florida, Gainesville, Florida, United States of America.

Understanding the drivers of large-scale vegetation change is critical to managing landscapes and key to predicting how projected climate and land use changes will affect regional vegetation patterns. This study aimed to improve our understanding of the role, magnitude, and spatial distribution of the key environmental and socioeconomic factors driving vegetation change in a southern African savanna. This research was conducted across the Kwando, Okavango and Zambezi catchments of southern Africa (Angola, Namibia, Botswana and Zambia) and explored vegetation cover change across the region from 2001-2010. Read More

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December 2018

Trait-based ecology of terrestrial arthropods.

Biol Rev Camb Philos Soc 2018 Dec 13. Epub 2018 Dec 13.

Department of Zoology, University of Oxford, Oxford, OX1 3PS, U.K.

In focusing on how organisms' generalizable functional properties (traits) interact mechanistically with environments across spatial scales and levels of biological organization, trait-based approaches provide a powerful framework for attaining synthesis, generality and prediction. Trait-based research has considerably improved understanding of the assembly, structure and functioning of plant communities. Further advances in ecology may be achieved by exploring the trait-environment relationships of non-sessile, heterotrophic organisms such as terrestrial arthropods, which are geographically ubiquitous, ecologically diverse, and often important functional components of ecosystems. Read More

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December 2018

Dendritic sodium spikes endow neurons with inverse firing rate response to correlated synaptic activity.

J Comput Neurosci 2018 Dec 13. Epub 2018 Dec 13.

Unité de Neurosciences, Information et Complexité, Centre National de la Recherche Scientifique, Gif-sur-Yvette, France.

Many neurons possess dendrites enriched with sodium channels and are capable of generating action potentials. However, the role of dendritic sodium spikes remain unclear. Here, we study computational models of neurons to investigate the functional effects of dendritic spikes. Read More

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December 2018

A Guided Vehicle under Fire Conditions Based on a Modified Ultrasonic Obstacle Avoidance Technology.

Sensors (Basel) 2018 Dec 10;18(12). Epub 2018 Dec 10.

Civil and Infrastructure Engineering Discipline, School of Engineering, RMIT University, Melbourne, VIC 3000, Australia.

Low visibility and hot smoke environment under fire conditions can largely hamper the related fire rescue processes. Ultrasound obstacle avoidance technology is then useful for guidance. However, the biggest challenge of adopting ultrasound technology comes from accurate distance measurements under the disturbances of high temperature and soot particle concentration. Read More

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December 2018

Determinants of Termite Assemblages' Characteristics within Natural Habitats of a Sudano-Guinean Savanna (Comoe National Park, Côte d'Ivoire).

Insects 2018 Dec 10;9(4). Epub 2018 Dec 10.

Station de Recherche en Ecologie du Parc National de la Comoé, 27 BP 847 Abidjan 27, Ivory Coast.

Termites are one of the major components of tropical ecosystems. However, the ecological and biological variables determining the structure of their communities within natural habitats are less documented in general and especially in the Comoe National Park, a Sudano-Guinean savanna zone located in the north-eastern part of Côte d'Ivoire (West Africa). Using a standardized method of belt transects, the structure of termite's communities was estimated within habitats differing in the structure of their vegetation, soil characteristics, and the disturbance level caused by annual occurrences of bushfires. Read More

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December 2018
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In-Situ Armoring: A Robust, High-Wettability and Fire-Resistant Hybrid Separator for Advanced and Safe Batteries.

ACS Appl Mater Interfaces 2018 Dec 13. Epub 2018 Dec 13.

Development of non-flammable separators with excellent properties is in urgent need by next-generation advanced and safe energy storage devices. However, it has been extremely challenging to simultaneously achieve fire-resistance, high mechanical strength, good thermo-mechanical stability and low ion-transport resistance for polymeric separators. Herein, to address all these needs, we report an in-situ formed core-shell silica@ silica-imbedded polyimide (in-situ SiO@(PI/SiO)) nanofabric as a new high-performance inorganic-organic hybrid separator. Read More

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December 2018

Wildfires and the role of their drivers are changing over time in a large rural area of west-central Spain.

Sci Rep 2018 Dec 12;8(1):17797. Epub 2018 Dec 12.

Departamento de Ciencias Ambientales, Universidad de Castilla-La Mancha, Avda. Carlos III, 45071, Toledo, Spain.

During the last decades, wildfires have been changing in many areas across the world, due to changes in climate, landscapes and socioeconomic drivers. However, how the role of these drivers changed over time has been little explored. Here, we assessed, in a spatially and temporally explicit way, the changing role of biophysical and human-related factors on wildfires in a rural area in west-central Spain from 1979 to 2008. Read More

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December 2018

Spiking Pattern of the Mouse Developing Inner Hair Cells Is Mostly Invariant Along the Tonotopic Axis.

Front Cell Neurosci 2018 14;12:407. Epub 2018 Nov 14.

Institut des Neurosciences de Montpellier (INM), Inserm, University of Montpellier, Montpellier, France.

During development, the sensory cells of the cochlea, the inner hair cells (IHCs), fire spontaneous calcium action potentials. This activity at the pre-hearing stage allows the IHCs to autonomously excite the auditory nerve fibers and hence, represents an efficient mechanism to shape the tonotopic organization along the ascending auditory pathway. Using calcium imaging, we show that the activity in the developing cochlea consists of calcium waves that propagate across the supporting and sensory cells. Read More

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November 2018

Simulation Study of Intermittent Axonal Block and Desynchronization Effect Induced by High-Frequency Stimulation of Electrical Pulses.

Front Neurosci 2018 22;12:858. Epub 2018 Nov 22.

Department of Biomedical Engineering, The College of New Jersey, Ewing, NJ, United States.

Deep brain stimulation (DBS) has been successfully used in treating neural disorders in brain, such as Parkinson's disease and epilepsy. However, the precise mechanisms of DBS remain unclear. Regular DBS therapy utilizes high-frequency stimulation (HFS) of electrical pulses. Read More

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November 2018

Persistent self-reported ear and hearing problems among World Trade Center-exposed firefighters and emergency medical service workers, 2001-2017-A longitudinal cohort analysis.

Am J Ind Med 2019 Jan 6;62(1):43-49. Epub 2018 Dec 6.

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, New York.

Background: The goal of this study was to estimate the impact of exposure to the World Trade Center (WTC) site on annual and persistent rates of otalgia and hearing impairment among Fire Department of the City of New York (FDNY) Firefighters and Emergency Medical Service Workers (EMS).

Methods: Responders completed routine physical health questionnaires at monitoring visits. We used logistic and marginal logistic regression models to explore the association between otalgia and hearing impairment and WTC arrival time. Read More

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January 2019

Regulator of telomere length 1 () mutations are associated with heterogeneous pulmonary and extra-pulmonary phenotypes.

Eur Respir J 2018 Dec 5. Epub 2018 Dec 5.

APHP, Hôpital Bichat, Service de Pneumologie A, DHU FIRE, Paris, France.

mutations have been evidenced in 5-9% of familial pulmonary fibrosis, but the phenotype of patients with interstitial lung disease (ILD) and mutations is poorly known.Whole exome sequencing was performed in 252 probands with ILD and we included all patients with ILD and mutation. RTEL1 expression was evaluated by immunochemistry in the lung of controls, and mutation carriers. Read More

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December 2018

Haemodynamic stress-induced breaches of the arterial intima trigger inflammation and drive atherogenesis.

Eur Heart J 2018 Dec 11. Epub 2018 Dec 11.

INSERM U1148, Laboratory for Vascular Translational Science (LVTS), DHU FIRE, University Paris Diderot, Sorbonne Paris Cité, 46 rue Henri Huchard, Paris, France.

Aims: Inflammatory mediators, including blood cells and their products, contribute critically to atherogenesis, but the igniting triggers of inflammation remain elusive. Atherosclerosis develops at sites of flow perturbation, where the enhanced haemodynamic stress could initiate the atherogenic inflammatory process due to the occurrence of mechanic injury. We investigated the role of haemodynamic stress-induced breaches, allowing the entry of blood cells in the arterial intima, in triggering inflammation-driven atherogenesis. Read More

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December 2018
1 Read

Does fire disturbance affect ant community structure? Insights from spatial co-occurrence networks.

Oecologia 2018 Dec 11. Epub 2018 Dec 11.

Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET-Universidad Nacional de Córdoba, Vélez Sarsfield 1611, 5000, Córdoba, Argentina.

The coexistence of several species involves a complex mix of positive and negative interactions that can be represented as networks. As much as other ecological features, patterns of multispecies co-occurrence are susceptible to anthropogenic disturbance. In ant communities, wildfires may enhance competitive interactions by benefiting active, aggressive species, and by increasing encounter probabilities through decreased space availability. Read More

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December 2018

Prehospital Double Sequential Defibrillation: A Matched Case-Control Study.

Acad Emerg Med 2018 Dec 10. Epub 2018 Dec 10.

Department of Emergency Health Sciences, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA.

Study Objectives: The goal of our study is to determine if prehospital double sequential defibrillation (DSD) is associated with improved survival to hospital admission in the setting of refractory ventricular fibrillation/pulseless ventricular tachycardia (VF/pVT).

Methods: This project is a matched case-control study derived from prospectively collected Quality Assurance/Quality Improvement (QA/QI) data obtained from the San Antonio Fire Department out-of-hospital cardiac arrest database between JAN 2013 and DEC 2015. The cases were defined as out-of-hospital cardiac arrest (OHCA) patients with refractory VF/pVT that survived to hospital admission. Read More

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December 2018
3 Reads

Fire deficits have increased drought-sensitivity in dry conifer forests; fire frequency and tree-ring carbon isotope evidence from Central Oregon.

Glob Chang Biol 2018 Dec 9. Epub 2018 Dec 9.

Oregon State University, Forest Ecosystems and Society, 321 Richardson Hall, Corvallis, Oregon, United States, 97331-5752.

A century of fire suppression across the Western US has led to more crowded forests and increased competition for resources. Studies of forest thinning or stand conditions after mortality events have provided indirect evidence for how competition can promote drought stress and predispose forests to severe fire and/or bark beetle outbreaks. Here we demonstrate linkages between fire deficits and increasing drought stress through analyses of annually resolved tree-ring growth, fire scars, and carbon isotope discrimination (Δ C) across a dry mixed-conifer forest landscape. Read More

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December 2018

Insecticidal Activity of Methyl Benzoate Analogs Against Red Imported Fire Ants, Solenopsis invicta (Hymenoptera: Formicidae).

J Econ Entomol 2018 Dec 10. Epub 2018 Dec 10.

US Department of Agriculture, Agricultural Research Service, National Biological Control Laboratory, Stoneville, MS.

Although insecticidal properties of certain benzoates have been investigated for pest insects and mites, toxicity of benzoates to the red imported fire ants, Solenopsis invicta Buren, has never been reported. In this study, 15 commercially available benzoates were assessed for their contact and fumigation toxicity to S. invicta workers and their chemical structure-activity relationships. Read More

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December 2018

Measuring the Effects of Employment Protection Policies: Theory and Evidence from the Americans with Disabilities Act.

Labour Econ 2018 Oct 13;54:116-134. Epub 2018 Aug 13.

Rhee: Korea Development Institute, 263 Namsejong-ro, Sejong City 30149, Republic of Korea.

Title I of the Americans with Disabilities Act (ADA) is an employment protection policy for disabled workers. By exploiting cross-state variation in pre-ADA legislation, we measure the effects of the law on transition rates of disabled workers. We find a decline in employment-to-non-employment transitions after the ADA, with an insignificant change in flow into employment. Read More

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October 2018

Ignition sensitivity of different compositional wood pellets and particle size dependence.

J Environ Manage 2018 Dec 5;232:789-795. Epub 2018 Dec 5.

School of Chemical and Process Engineering, University of Leeds, LS2 9JT, UK.

Partial or complete substitution of coal with renewable biomass like wood is a sustainable and effective solution to reduce the CO emissions in the atmosphere. Utilization of these woods in the form of compact pellets facilitates in its handling and transportation with higher energy density. However, for electric power generation the pellets are broken up into their constituent milled finer particles for burning as a pulverised biomass flame. Read More

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December 2018

Adsorption of gaseous elemental mercury on soils: Influence of chemical and/or mineralogical characteristics.

Ecotoxicol Environ Saf 2018 Dec 4;170:98-106. Epub 2018 Dec 4.

Universidade Federal de Minas Gerais Departamento de Química, ICEX, UFMG, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil. Electronic address:

Gaseous elemental Hg is stable enough to be transported over long distances. Some of the most important sources of Hg in the atmosphere are artisanal gold mining activities and forest fires. Both of these sources are particularly prevalent in the Amazonia region. Read More

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December 2018

Queen venom isosolenopsin A delivers rapid incapacitation of fire ant competitors.

Toxicon 2018 Dec 4;158:77-83. Epub 2018 Dec 4.

Red Imported Fire Ant Research Centre, South China Agricultural University, Guangzhou, 510642, PR China.

Fire ant venom contains insecticidal alkaloids named 'solenopsins'. Whilst species-specific differences are reported, little attention has been given to caste-specific venom adaptations. The venom of fire ant queens has remained particularly poorly studied, though studies have shown it to be strikingly similar across different species, in being primarily composed of the alkaloid isosolenopsin A, regardless of the chemical configuration in workers. Read More

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December 2018

Treatment of cardiac sarcoidosis: A comparative study of steroids and steroids plus immunosuppressive drugs.

Int J Cardiol 2018 Nov 30. Epub 2018 Nov 30.

Département de Médecine Interne, Hôpital Bichat, Université Paris Diderot, PRES Sorbonne Paris Cité, Assistance Publique Hôpitaux de Paris, Paris, France; Département Hospitalo-Universitaire FIRE (Fibrosis, Inflammation and Remodelling in Renal and Respiratory Diseases), Paris, France; INSERM U1149, Paris, France. Electronic address:

Background: We aimed to compare the efficacy of steroids alone or associated with immunosuppressive drugs for the prevention of relapse in cardiac sarcoidosis (CS).

Methods: In this monocentric multidisciplinary retrospective single center study, all consecutive patients with histologically proven sarcoidosis hospitalized from January 2012 to December 2016 were considered. All patients with symptomatic CS were studied. Read More

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November 2018

Usefulness of Magnetic Resonance Imaging in the Diagnosis of Juxtaglomerular Cell Tumors: A Report of 10 Cases and Review of the Literature.

Am J Kidney Dis 2018 Dec 4. Epub 2018 Dec 4.

Hypertension Unit, AP-HP, Hôpital Européen Georges Pompidou, Paris, France; Faculty of Medicine, Paris-Descartes University, Paris, France. Electronic address:

Juxtaglomerular cell tumors (JCTs), a rare but potentially curable cause of hypertension, are difficult to diagnose because they may be missed or misidentified as a cyst by computed tomography (CT). Their magnetic resonance imaging (MRI) pattern has not been well described. We report the clinical, biological, and radiologic features of 10 patients with JCTs. Read More

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December 2018

Where There's Smoke, There's Fire-But Who Is Lighting the Match? Bolstering Transcriptional Evidence for the Role of Nuclear Factor-κB in Neuroimmune Activation in Schizophrenia.

Biol Psychiatry 2019 Jan;85(1):5-7

Schizophrenia Research Laboratory Neuroscience Research Australia, Randwick, New South Wales, Australia; School of Psychiatry, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia; Department of Neuroscience and Physiology, Upstate Medical University, Syracuse, New York. Electronic address:

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January 2019

Emergency call characteristics and EMS dispatcher protocol adherence for possible anaphylaxis.

Prehosp Emerg Care 2018 Dec 11:1-24. Epub 2018 Dec 11.

e Research Institute at Nationwide Childrens Hospital, Center for Injury Research and Policy , 700 Children's Drive, RB III , Columbus , 43205-2664 United States.

Objective: Anaphylaxis is a medical emergency requiring prompt recognition and treatment with intramuscular epinephrine to optimize outcomes. To date, there is a paucity of data regarding the demographic characteristics of the subset of patients calling 911 for allergic reactions and the emergency medical services (EMS) dispatcher's adherence to national protocols for their response to a suspected allergic reaction.

Methods: We conducted a retrospective review of dispatch calls to a local municipality that were dispatched with an impression of an "allergic reaction" or "difficulty breathing related to a suspected allergic reaction" from January 2016 to June 2016. Read More

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December 2018

The legacy of colonial fire management policies on traditional livelihoods and ecological sustainability in savannas: Impacts, consequences, new directions.

J Environ Manage 2018 Dec 3;232:600-606. Epub 2018 Dec 3.

Darwin Centre for Bushfire Research, Charles Darwin University, Darwin, Australia. Electronic address:

Land occupation and management systems have defined fire regimes and landscapes for millennia. The savanna biome is responsible for 86% of all fire events, contributes to 10% of the total carbon emissions annually and is home to 10% of the human population. European colonization has been associated with the implementation of fire suppression policies in many tropical savanna regions, markedly disrupting traditional fire management practices and transforming ecosystems. Read More

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December 2018
4 Reads

Are environmental factors for atopic eczema in ISAAC Phase Three due to reverse causation?

J Invest Dermatol 2018 Dec 3. Epub 2018 Dec 3.

Department of Paediatrics, Prince of Wales Hospital, Hong Kong, SAR China.

Some previously described environmental associations for atopic eczema (AE) may be due to reverse causation. We explored the role of reverse causation by comparing individual- and school-level results for multiple AE risk factors. ISAAC Phase Three surveyed children within schools (the sampling unit) on AE symptoms and potential risk factors. Read More

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December 2018
5 Reads

Evaluation of fiber optic methane sensor using a smoke chamber.

Int J Min Sci Technol 2018 Nov;28(6):969-974

National Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh 15236, USA.

This report presents the results of experiments to evaluate a prototype fiber optic methane monitor exposed to smoke using a smoke chamber to simulate atmospheric conditions in an underground coal mine after a fire or explosion. The experiments were conducted using test fires of different combustible sources commonly found in mines -douglas-fir wood, SBR belt, and Pittsburgh seam coal. The experiments were designed to assess the response of the fiber optic methane sensor to different contaminants, different contaminant levels and different contaminant durations produced from the test fires. Read More

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November 2018

The disproportionate importance of long-unburned forests and woodlands for reptiles.

Ecol Evol 2018 Nov 17;8(22):10952-10963. Epub 2018 Oct 17.

Fenner School of Environment and Society The Australian National University Acton ACT Australia.

Our understanding of the impacts of time since fire on reptiles remains limited, partly because there are relatively few locations where long-term, spatially explicit fire histories are available. Such information is important given the large proportion of some landscapes that are managed with frequent prescribed fire to meet fuel management objectives. We conducted a space-for-time study across a landscape in southeastern Australia where the known fire history spanned 6 months to at least 96 years. Read More

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November 2018
2 Reads

Italy's health minister fires country's top health board.

Authors:
Owen Dyer

BMJ 2018 Dec 5;363:k5158. Epub 2018 Dec 5.

Montreal.

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December 2018

[COPD due to Occupational Noxae].

Authors:
X Baur

Pneumologie 2018 Dec 3. Epub 2018 Dec 3.

Universitätsklinikum Hamburg-Eppendorf, ehem. Lehrstuhl Arbeitsmedizin und Maritime Medizin; European Society for Environmental und Occupational Medicine (EOM Society).

The chronic obstructive pulmonary disease (COPD) is characterised by mainly non-reversible bronchial obstruction with airflow limitation. Typically, it exhibits a progressive course. It is one of the leading causes of morbidity and mortality worldwide. Read More

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December 2018
1 Read

Are environmental risk factors for current wheeze in the International Study of Asthma and Allergies in Childhood (ISAAC) Phase Three due to reverse causation?

Clin Exp Allergy 2018 Dec 3. Epub 2018 Dec 3.

Department of Medical Statistics, London School of Hygiene and Tropical Medicine, London, United Kingdom.

Background: Phase Three of the International Study of Asthma and Allergies in Childhood (ISAAC) measured the global prevalence of symptoms of asthma in children. We undertook comprehensive analyses addressing risk factors for asthma symptoms in combination, at both the individual and the school level, to explore the potential role of reverse causation due to selective avoidance or confounding by indication.

Objective: To explore the role of reverse causation in risk factors of asthma symptoms. Read More

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December 2018
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Physiological, cognitive and neuromuscular effects of heat exposure on firefighters after a live training scenario.

Int J Occup Saf Ergon 2018 Dec 3:1-27. Epub 2018 Dec 3.

a Service de Santé et de Secours Médical - Health and Medical Rescue Service (SSSM) Service Départemental d'Incendie et de Secours de Maine-et-Loire - Departmental Fire and Rescue Services of Maine-et-Loire (SDIS 49) 6 Avenue du Grand Perigne, 49071 Beaucouzé France ,

This study investigated physiological, cognitive and neuromuscular performances in firefighters after a structural live fire scenario. Changes in vital signs and environmental parameters, cognitive and neuromuscular performance were measured before and after a live-fire training session in a closed environment, in conditions similar to those one could encounter in a structural fire. Very high ambient temperature peaks were reached during the 30  min sessions. Read More

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December 2018