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https://www.readbyqxmd.com/read/28636053/evidence-of-bad-recycling-practices-bfrs-in-children-s-toys-and-food-contact-articles
#1
A Guzzonato, F Puype, S J Harrad
Brominated flame retardants (BFRs) have been used intentionally in a wide range of plastics, but are now found in an even wider range of such materials (including children's toys and food contact articles) as a result of recycling practices that mix BFR-containing waste plastics with "virgin" materials. In this study Br was quantified in toy and food contact samples on the assumption that its concentration can be used as a metric for BFR contamination. Subsequently, compound specific determination of BFRs was performed to evaluate the validity of the aforementioned assumption, crucial to render rapid, inexpensive, in situ Br determination in non-laboratory environments (such as waste handling facilities) a viable option for sorting wastes according to their BFR content...
June 21, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28625986/the-irr-and-rira-proteins-participate-in-a-complex-regulatory-circuit-and-act-in-concert-to-modulate-bacterioferritin-expression-in-ensifer-meliloti-1021
#2
Daniela Costa, Vanesa Amarelle, Claudio Valverde, Mark R O'Brian, Elena Fabiano
In this work we found that the bfr gene of the rhizobial species Ensifer meliloti, encoding a bacterioferritin iron storage protein, is involved in iron homeostasis and oxidative stress response. This gene is located downstream and overlapping the smc03787 ORF. No well predicted RirA or Irr boxes were found in the region immediately upstream the bfr gene although two presumptive RirA boxes and one presumptive Irr box were present in the putative promoter of smc03787 We demonstrate that bfr gene expression is enhanced under iron sufficient condition and that Irr and RirA modulate this expression...
June 16, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28600866/bone-mass-is-compromised-by-the-chemotherapeutic-trabectedin-in-association-with-effects-on-osteoblasts-and-macrophage-efferocytosis
#3
Benjamin P Sinder, Laura Zweifler, Amy J Koh, Megan N Michalski, Lorenz C Hofbauer, Jose Ignacio Aguirre, Hernan Roca, Laurie K McCauley
Macrophages have established roles supporting bone formation. Despite their professional phagocytic nature, the role of macrophage phagocytosis in bone homeostasis is not well understood. Interestingly, apoptosis is a pivotal feature of cellular regulation and the primary fate of osteoblasts is apoptosis. Efferocytosis (phagocytosis of apoptotic cells) is a key physiologic process for the homeostasis of many tissues, and is associated with expression of osteoinductive factors. To test effects of macrophage depletion and compromised phagocytosis on bone, 16 wk old male C57BL/6J mice were treated with trabectedin - a chemotherapeutic with established anti-macrophage effects...
June 10, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28579042/pathogenesis-and-treatment-of-bovine-foot%C3%A2-rot
#4
REVIEW
David C Van Metre
Bovine foot rot (BFR) is an infectious disease of the interdigital skin and subcutaneous tissues of beef and dairy cattle that occurs under a variety of management and environmental settings. The anaerobic, gram-negative bacteria Fusobacterium necrophorum, Porphyromonas levii, and Prevotella intermedia are commonly isolated from lesions. A multitude of host, agent, and environmental factors contribute to the development of BFR. Initiation of systemic antimicrobial therapy early in the course of disease commonly leads to resolution...
July 2017: Veterinary Clinics of North America. Food Animal Practice
https://www.readbyqxmd.com/read/28570972/bromine-in-plastic-consumer-products-evidence-for-the-widespread-recycling-of-electronic-waste
#5
Andrew Turner, Montserrat Filella
A range of plastic consumer products and components thereof have been analysed by x-ray fluorescence (XRF) spectrometry in a low density mode for Br as a surrogate for brominated flame retardant (BFR) content. Bromine was detected in about 42% of 267 analyses performed on electronic (and electrical) samples and 18% of 789 analyses performed on non-electronic samples, with respective concentrations ranging from 1.8 to 171,000μgg(-1) and 2.6 to 28,500μgg(-1). Amongst the electronic items, the highest concentrations of Br were encountered in relatively small appliances, many of which predated 2005 (e...
May 29, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28521663/towards-a-generic-procedure-for-the-detection-of-relevant-contaminants-from-waste-electric-and-electronic-equipment-weee-in-plastic-food-contact-materials-a-review-and-selection-of-key-parameters
#6
Franky Puype, Jiří Samsonek, Věra Vilímková, Šárka Kopečková, Andrea Ratiborská, Jan Knoop, Marion Egelkraut-Holtus, Markus Ortlieb, Uwe Oppermann
Recently, traces of brominated flame retardants (BFRs) have been detected in black plastic food-contact materials (FCMs), indicating the presence of recycled plastics, mainly coming from waste electric and electronic equipment (WEEE) as BFRs are one of the main additives in electric applications. In order to evaluate efficiently and preliminary in situ the presence of WEEE in plastic FCMs, a generic procedure for the evaluation of WEEE presence in plastic FCMs by using defined parameters having each an associated importance level has been proposed...
June 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28516260/-dietary-exposure-assessment-of-substances-in-foods-the-bfr-meal-study-the-first-german-total-diet-study
#7
REVIEW
Irmela Sarvan, Michaela Bürgelt, Oliver Lindtner, Matthias Greiner
The dietary exposure of a population to chemical substances is estimated based on representative consumption data and data on the occurrence of substances in foods. Consumption data in Germany for different age groups are provided by the National Nutrition Survey ll, VELS, EsKiMo and the ongoing KiESEL study. The data for the levels of substances in foods is currently obtained from the German food monitoring programme (Lebensmittel-Monitoring) and the German Food Composition Table (Bundeslebensmittelschlüssel) and is not sufficient for a comprehensive evaluation of dietary exposure in Germany...
May 17, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28513326/the-effects-of-blood-flow-restricted-electrostimulation-on-strength-hypertrophy
#8
Joshua Slysz, Jamie F Burr
CONTEXT: The combined effect of neuromuscular electrical muscle stimulation (NMES) and blood flow restriction (BFR) on muscle mass and strength has not been thoroughly investigated. OBJECTIVE: To examine the effects of combined and independent BFR and a low-intensity NMES on skeletal muscle adaptation. DESIGN: Exploratory Study. SETTING: Laboratory. PARTICIPANTS: Twenty recreationally active subjects...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28512613/comparison-of-complications-following-cranioplasty-using-a-sterilized-autologous-bone-flap-or-polymethyl-methacrylate
#9
Sung Hoon Kim, Dong Soo Kang, Jin Hwan Cheong, Jung Hee Kim, Kwan Young Song, Min Ho Kong
OBJECTIVE: The aims of current study are to compare complications following cranioplasty (CP) using either sterilized autologous bone or polymethyl methacrylate (PMMA), and to identify the risk factors for two of the most common complications: bone flap resorption (BFR) and surgical site infection (SSI). METHODS: Between January 2004 and December 2013, 127 patients underwent CP and were followed at least 12 months. Variables, including sex, age, initial diagnosis, time interval between decompressive craniectomy (DC) and CP, operation time, size of bone flap, and presence of ventriculo-peritoneal shunt, were analyzed to identify the risk factors for BFR and SSI...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28501908/a-tale-of-three-cuffs-the-hemodynamics-of-blood-flow-restriction
#10
J Grant Mouser, Scott J Dankel, Matthew B Jessee, Kevin T Mattocks, Samuel L Buckner, Brittany R Counts, Jeremy P Loenneke
INTRODUCTION: The blood flow response to relative levels of blood flow restriction (BFR) across varying cuff widths is not well documented. With the variety of cuff widths and pressures reported in the literature, the effects of different cuffs and pressures on blood flow require investigation. PURPOSE: To measure blood pressure using three commonly used BFR cuffs, examine possible venous/arterial restriction pressures, and measure hemodynamic responses to relative levels of BFR using these same cuffs...
May 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28500081/quadriceps-strengthening-with-and-without-blood-flow-restriction-in-the-treatment-of-patellofemoral-pain-a-double-blind-randomised-trial
#11
Lachlan Giles, Kate E Webster, Jodie McClelland, Jill L Cook
BACKGROUND: Quadriceps strengthening exercises are part of the treatment of patellofemoral pain (PFP), but the heavy resistance exercises may aggravate knee pain. Blood flow restriction (BFR) training may provide a low-load quadriceps strengthening method to treat PFP. METHODS: Seventy-nine participants were randomly allocated to a standardised quadriceps strengthening (standard) or low-load BFR. Both groups performed 8 weeks of leg press and leg extension, the standard group at 70% of 1 repetition maximum (1RM) and the BFR group at 30% of 1RM...
May 12, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28488836/effects-of-low-load-resistance-exercise-with-blood-flow-restriction-on-intramuscular-hemodynamics-oxygenation-level-and-water-content
#12
Osamu Yanagisawa, Atsuki Fukutani
BACKGROUND: Muscle metabolism during and after low-load blood flow restriction (BFR) exercise should be further investigated to clarify the mechanism by which the exercise leads to muscle hypertrophy, and increases strength and endurance. We aimed to investigate the effects of low-load resistance exercise with BFR on intramuscular hemodynamics, oxygenation level, and water content. METHODS: Seven men performed ankle plantar flexion exercise (120 repetitions, 30% one repetition maximum) using a custom-made device with and without BFR inside a magnetic resonance scanner...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28481416/blood-flow-restricted-training-leads-to-myocelullar-macrophage-infiltration-and-upregulation-of-heat-shock-proteins-but-no-apparent-muscle-damage
#13
Jakob L Nielsen, Per Aagaard, Tatyana A Prokhorova, Tobias Nygaard, Rune Dueholm Bech, Charlotte Suetta, Ulrik Frandsen
Previous studies indicate that low-load muscle contractions performed under local blood-flow restriction (BFR) may initially induce muscle damage and stress. However, whether these factors are evoked with longitudinal BFR training remains unexplored at the myocellular level. Two distinct study protocols were conducted (3 wk/1 wk). Subjects performed BFR exercise (100 mmHg, 20%-1RM) to concentric failure (BFRE) (3 wk/1 wk), while controls performed work-matched (LLE)(3 wk) or high-load (HLE; 70%-1RM)(1 wk), free-flow exercise...
May 8, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28451748/effects-of-4%C3%A2-weeks-of-low-load-unilateral-resistance-training-with-and-without-blood-flow-restriction-on-strength-thickness-v-wave-and-h-reflex-of-the-soleus-muscle-in-men
#14
David Colomer-Poveda, Salvador Romero-Arenas, Antonio Vera-Ibáñez, Manuel Viñuela-García, Gonzalo Márquez
PURPOSE: To test the effects of 4 weeks of unilateral low-load resistance training (LLRT), with and without blood flow restriction (BFR), on maximal voluntary contraction (MVC), muscle thickness, volitional wave (V wave), and Hoffmann reflex (H reflex) of the soleus muscle. METHODS: Twenty-two males were randomly distributed into three groups: a control group (CTR; n = 8); a low-load blood flow restriction resistance training group (BFR-LLRT; n = 7), who were an inflatable cuff to occlude blood flow; and a low-load resistance training group without blood flow restriction (LLRT; n = 7)...
April 27, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28447134/-poisonings-in-germany-poisons-centres-medical-management-and-national-monitoring
#15
REVIEW
Herbert Desel, Helmut Hentschel, Andreas Stürer
BACKGROUND: Illnesses caused by exposure to extracorporeal artificial substances play a major role in emergency medicine, family medicine, and environmental medicine. OBJECTIVE: The current situation of medical poisoning management and national reporting of poisonings in Germany are described. MATERIALS UND METHODS: The information and data presented here are derived from a literature review and from stakeholder interviews. RESULTS AND CONCLUSION: Eight poison centres (PCs) offer consultation supporting the diagnosis and treatment of poisoning cases in Germany today...
April 26, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28444936/blood-flow-restriction-attenuates-eccentric-exercise-induced-muscle-damage-without-perceptual-and-cardiovascular-overload
#16
Victor M Curty, Alexandre B Melo, Leonardo C Caldas, Lucas Guimarães-Ferreira, Nuno F de Sousa, Paula F Vassallo, Elisardo C Vasquez, Valério G Barauna
The aim of this study was to evaluate the acute effects of high-intensity eccentric exercise (HI-ECC) combined with blood flow restriction (BFR) on muscle damage markers, and perceptual and cardiovascular responses. Nine healthy men (26 ± 1 years, BMI 24 ± 1 kg m(-) ²) underwent unilateral elbow extension in two conditions: without (HI-ECC) and with BFR (HI-ECC+BFR). The HI-ECC protocol corresponded to three sets of 10 repetitions with 130% of maximal strength (1RM). The ratings of perceived exertion (RPE) and pain (RPP) were measured after each set...
April 26, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28441624/various-soil-amendments-and-environmental-wastes-affect-the-im-mobilization-and-phytoavailability-of-potentially-toxic-elements-in-a-sewage-effluent-irrigated-sandy-soil
#17
Sabry M Shaheen, Mohamed S Shams, Mohamed R Khalifa, Mohamed A El-Dali, Jörg Rinklebe
Contamination of long-term sewage effluent irrigated soils by potentially toxic elements (PTEs) is a serious concern due to its high environmental and health risk. Our scientific hypothesis is that soil amendments can cause contradictory effects on the element mobilization and phytoavailability depending on the type of element and amendment. Therefore, we aimed to assess the impact of the application (1%) of several low cost amendments and environmental wastes on the (im)mobilization, availability, and uptake of Al, Cd, Cr, Cu, Fe, Mn, Ni, and Zn by sorghum (Sorghum bicolor) in a long term sewage effluent irrigated sandy soils collected from Egypt...
August 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28438281/predictors-of-positive-opinion-about-bach-flower-remedies-in-adults-from-three-latin-american-countries-an-exploratory-study
#18
Boris C Rodríguez-Martín, Melba Fallas-Durán, Barbara Gaitskell, Daniela Vega-Rojas, Paula Martínez-Chaigneau
The current study aimed to determine if positive opinions about BFR interacts with spirituality in adults from three Latin-American countries using a CHAID algorithm. Participants were 703 adults from Cuba (n = 319), Costa Rica (n = 252) and Chile (n = 132). PREDICTORS: demographic data, received information, received treatment, spirituality, dispositional optimism and willingness to use a placebo intervention were measured and analyzed. A supervised classification which included a training phase (n = 423) and a test phase (n = 280) was employed...
May 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/28416903/effects-of-strength-training-with-blood-flow-restriction-on-torque-muscle-activation-and-local-muscular-endurance-in-healthy-subjects
#19
Jbc Sousa, G R Neto, H H Santos, J P Araújo, H G Silva, M S Cirilo-Sousa
The present study aimed to analyse the effects of six weeks of strength training (ST), with and without blood flow restriction (BFR), on torque, muscle activation, and local muscular endurance (LME) of the knee extensors. Thirty-seven healthy young individuals were divided into four groups: high intensity (HI), low intensity with BFR (LI+BFR), high intensity and low intensity + BFR (COMB), and low intensity (LI). Torque, muscle activation and LME were evaluated before the test and at the 2(nd), 4(th) and 6(th) weeks after exercise...
March 2017: Biology of Sport
https://www.readbyqxmd.com/read/28402045/brachial-blood-flow-under-relative-levels-of-blood-flow-restriction-is-decreased-in-a-nonlinear-fashion
#20
J Grant Mouser, Carl J Ade, Christopher D Black, Debra A Bemben, Michael G Bemben
INTRODUCTION: Blood flow restriction (BFR), the application of external pressure to occlude venous return and restrict arterial inflow, has been shown to increase muscular size and strength when combined with low-load resistance exercise. BFR in the research setting uses a wide range of pressures, applying a pressure based upon an individual's systolic pressure or a percentage of occlusion pressure; not a directly determined reduction in blood flow. The relationship between relative pressure and blood flow has not been established...
April 12, 2017: Clinical Physiology and Functional Imaging
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