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https://www.readbyqxmd.com/read/29142636/bone-flap-resorption-following-cranioplasty-with-autologous-bone-quantitative-measurement-of-bone-flap-resorption-and-predictive-factors
#1
Sang Pil Park, Jae Hoon Kim, Hee In Kang, Deok Ryeong Kim, Byung Gwan Moon, Joo Seung Kim
Objective: To quantitatively measure the degree of bone flap resorption (BFR) following autologous bone cranioplasty and to investigate factors associated with BFR. Methods: We retrospectively reviewed 29 patients who underwent decompressive craniectomy and subsequent autologous bone cranioplasty between April 2005 and October 2014. BFR was defined as: 1) decrement ratio ([the ratio of initial BF size/craniectomy size]-[the ratio of last BF/craniectomy size]) >0...
November 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29126026/legacy-and-novel-brominated-flame-retardants-in-indoor-dust-from-beijing-china-occurrence-human-exposure-assessment-and-evidence-for-pbdes-replacement
#2
Jiandi Wang, Yuwei Wang, Zhixiong Shi, Xianqing Zhou, Zhiwei Sun
Levels of legacy brominated flame retardants (BFRs), including tetrabromobisphenol A (TBBPA), hexabromocyclododecane isomers (HBCDs) and polybrominated diphenyl ethers (PBDEs), and six currently used novel BFRs were determined in house dust and office dust collected from a community in Beijing, China. This is the first study where the three kinds of legacy BFRs and novel BFRs were all measured in dust samples from China. HPLC-MS/MS was used for the detection of TBBPA and HBCDs, and the other BFRs were tested on a GC-NCI/MS...
November 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29112627/impact-of-blood-flow-restriction-exercise-on-muscle-fatigue-development-and-recovery
#3
Florian Husmann, Thomas Mittlmeier, Sven Bruhn, Volker Zschorlich, Martin Behrens
PURPOSE: The present study was designed to provide mechanistic insight into the time-course and etiology of muscle fatigue development and recovery during and after low-intensity exercise when it is combined with blood flow restriction (BFR). METHODS: Seventeen resistance-trained males completed four sets of low-intensity isotonic resistance exercise under two experimental conditions: knee extension exercise combined with (i) BFR and (ii) without BFR (CON). Neuromuscular tests were performed before, during (immediately after each set of knee extension exercise) and 1, 2, 4, and 8 min after each experimental condition...
November 6, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29106676/safety-and-efficacy-of-taurolidine-urokinase-versus-taurolidine-heparin-as-a-tunneled-catheter-lock-solution-in-hemodialysis-patients-a-prospective-randomized-controlled-study
#4
Fadwa Al-Ali, Ahmad F Hamdy, Abdullah Hamad, Mohamed Elsayed, Zafar Zafar Iqbal, Aisha Elsayed, Rania Ibrahim, Hoda Tolba, Hisham Buanan, Ashraf Fawzy
Background: Taurolidine citrate with heparin (Taurolock/Hep) is a promising central venous catheter lock solution. Despite its universal use among our hemodialysis patients, the prevalence of catheter malfunction was high. We aimed to compare Taurolock/Hep and taurolidine citrate with urokinase (Taurolock/U) as a catheter lock solution in order to identify whether either solution could reduce catheter-related dysfunction. Methods: In this prospective, randomized, controlled trial, patients were randomized to receive either Taurolock/Hep or Taurolock/U and were followed for 6 months...
July 4, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29091796/tbbpa-disposition-and-kinetics-in-pregnant-and-nursing-wistar-han-igs-rats
#5
Gabriel A Knudsen, Samantha M Hall, Alicia C Richards, Linda S Birnbaum
Tetrabromobisphenol-A (TBBPA) is a brominated flame retardant (BFR) commonly used in electronics to meet fire safety standards and has the largest worldwide production of any BFR. TBBPA has been detected in human breast milk and maternal/cord serum, indicating exposure to mothers, fetuses, and breastfeeding newborns although exposure to fetuses and newborns is poorly understood. Pregnant or nursing Wistar Han IGS rats were administered [(14)C]-TBBPA in a single dose (25 mg/kg, 2.5 μCi/kg) and euthanized between 0...
October 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/29084094/the-effects-of-practical-blood-flow-restriction-training-on-adolescent-lower-body-strength
#6
Paul E Luebbers, Emily V Witte, Johnathan Q Oshel
The purpose of this study was to examine the effects of a practical blood flow restriction (BFR) training program on lower-body strength of high school weightlifters. Twenty-five students were divided into three groups. For six weeks, each group completed the same resistance training program with the exception of the parallel back squat exercise (2 days/week), which was different for each group. One group (HI) completed a traditional high load (≥65% 1RM) back squat protocol with three sets of low repetitions (≤10)...
October 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29077147/melatonin-promotes-osteoblast-differentiation-of-bone-marrow-mesenchymal-stem-cells-in-aged-rats
#7
Z-M Chu, H-B Li, S-X Sun, Y-C Jiang, B Wang, Y-F Dong
OBJECTIVE: The current study was to explore the effect of melatonin on osteoporosis and relevant mechanisms. MATERIALS AND METHODS: We performed micro-CT to detect bone microstructure and ELISA to detect the contents of osteocalcin (OCN) and bone alkaline phosphatase (BAP) in serum. Double fluorescence labeling of calcein and tetracycline and toluidine blue staining were used to determine morphological indexes of bone tissues. Alizarin red staining and Oil Red O staining were performed to recognize bone cells and adipocytes...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29058111/the-effects-of-muscle-blood-flow-restriction-during-running-training-on-measures-of-aerobic-capacity-and-run-time-to-exhaustion
#8
Carl D Paton, Shalako M Addis, Lee-Anne Taylor
PURPOSE: Training with blood flow restriction (BFR) is known to enhance muscle mass and strength during resistance training activities. However, little is known about the BFR effects during aerobic training. This investigation examines the effects of running training performed with or without BFR on physiology and performance. METHOD: Sixteen subjects (age 24.9 ± 6.9 years, height 172.9 ± 7.8 cm, weight 75.1 ± 13.8 kg) were assigned to a BFR or control (CON) group for eight sessions of training...
October 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29049889/early-metabolic-response-after-resistance-exercise-with-blood-flow-restriction-in-well-trained-men-a-metabolomics-approach
#9
Denis F Valério, Ricardo Berton, Miguel S Conceição, Rafael R Canevarolo, Mara Patrícia T Chacon-Mikahil, Cláudia R Cavaglieri, Gabriela V Meirelles, Ana C Zeri, Cleiton A Libardi
The present study aimed to compare the early metabolic response between high-load resistance exercise (HL-RE) and low-load resistance exercise with blood flow restriction (LL-BFR). Nine young well-trained men participated in a randomized crossover design in which each subject completed LL-BFR, HL-RE or condition control (no exercise) with a one-week interval between them. Blood samples were taken immediately before and five minutes after the exercise sessions. Nuclear magnetic resonance (NMR) spectroscopy identified and quantified 48 metabolites, six of which presented significant changes among the exercise protocols...
October 19, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29045733/effect-of-first-cannulation-time-and-dialysis-machine-blood-flows-on-survival-of-arteriovenous-fistulas
#10
Teun Wilmink, Sarah Powers, Lee Hollingworth, Tamasin Stevenson
Background: To study the effect of cannulation time on arteriovenous fistula (AVF) survival. Methods: Analysis of two prospective databases of access operations and dialysis sessions from 12 January 2002 through 4 January 2015 with follow-up until 4 January 2016. First cannulation time (FCT), defined from operation to first cannulation, was categorized as <2 weeks, 2-4 weeks, 4-8 weeks, 8-16 weeks and ≥16 weeks. Early cannulation was defined as FCT within 4 weeks...
October 16, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29043659/magnitude-of-muscle-strength-and-mass-adaptations-between-high-load-resistance-training-versus-low-load-resistance-training-associated-with-blood-flow-restriction-a-systematic-review-and-meta-analysis
#11
REVIEW
Manoel E Lixandrão, Carlos Ugrinowitsch, Ricardo Berton, Felipe C Vechin, Miguel S Conceição, Felipe Damas, Cleiton A Libardi, Hamilton Roschel
BACKGROUND: Low-load resistance training (< 50% of one-repetition maximum [1RM]) associated with blood-flow restriction (BFR-RT) has been thought to promote increases in muscle strength and mass. However, it remains unclear if the magnitude of these adaptations is similar to conventional high-load resistance training (> 65% 1RM; HL-RT). OBJECTIVE: To compare the effects of HL- versus BFR-RT on muscle adaptations using a systematic review and meta-analysis procedure...
October 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29037712/straightforward-analytical-method-to-determine-opium-alkaloids-in-poppy-seeds-and-bakery-products
#12
Patricia López, Diana P K H Pereboom-de Fauw, Patrick P J Mulder, Martien Spanjer, Joyce de Stoppelaar, Hans G J Mol, Monique de Nijs
A straightforward method to determine the content of six opium alkaloids (morphine, codeine, thebaine, noscapine, papaverine and narceine) in poppy seeds and bakery products was developed and validated down to a limit of quantification (LOQ) of 0.1mg/kg. The method was based on extraction with acetonitrile/water/formic acid, ten-fold dilution and analysis by LC-MS/MS using a pH 10 carbonate buffer. The method was applied for the analysis of 41 samples collected in 2015 in the Netherlands and Germany. All samples contained morphine ranging from 0...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29033174/airborne-particle-bound-brominated-flame-retardants-levels-size-distribution-and-indoor-outdoor-exchange
#13
Yue-Shan Zhu, Wan-Dong Yang, Xiu-Wen Li, Hong-Gang Ni, Hui Zeng
The quality of indoor environments has a significant impact on public health. Usually, an indoor environment is treated as a static box, in which physicochemical reactions of indoor air contaminants are negligible. This results in conservative estimates for primary indoor air pollutant concentrations, while also ignoring secondary pollutants. Thus, understanding the relationship between indoor and outdoor particles and particle-bound pollutants is of great significance. For this reason, we collected simultaneous indoor and outdoor measurements of the size distribution of airborne brominated flame retardant (BFR) congeners...
October 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29030119/weee-plastic-sorting-for-bromine-essential-to-enforce-eu-regulation
#14
Pierre Hennebert, Montserrat Filella
The plastics of waste of electric and electronic equipment (WEEE) are improved for fire safety by flame retardants, and particularly brominated flame retardants (BFR). As waste, the management of these plastic fractions must comply with the update of the regulation of waste hazard classification (2014, 2017), the publication of a technical standard on management of WEEE (2015), and a restriction of use for decabromodiphenylether in the product regulation (2017). Data of bromine (n=4283) and BFR concentrations (n=98) in plastics from electric and electronic equipment (EEE), and from WEEE processing facilities before and after sorting for bromine in four sites in France have been studied for chemical composition and for regulatory classification...
October 10, 2017: Waste Management
https://www.readbyqxmd.com/read/29023279/syncope-episodes-and-blood-flow-restriction-training
#15
Juan Martín-Hernández, Alejandro Santos-Lozano, Carl Foster, Alejandro Lucia
The combination of low-load resistance training [or more recently, neuromuscular electrical stimulation (NMES)] with a moderate local blood flow restriction (BFR) is becoming a widespread training and rehabilitation method. Scientific data indicate the overall safety of BFR, at least in healthy young people. However, it has been associated with side effects, usually minor, and further research is warranted regarding the safety and efficacy of this technique, especially in clinical populations. We found 3 syncope/presyncopal episodes among 21 healthy people (9 men), all occurring in men and during familiarization sessions (in which BFR was applied alone) but not thereafter (BFR sessions combined with NMES): 1 subject experienced a brief syncope and 2 other subjects exhibited presyncopal symptoms (sweating, lightheadedness, and pallor)...
October 6, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28989983/prevalence-of-historical-and-replacement-brominated-flame-retardant-chemicals-in-new-york-city-homes
#16
Whitney J Cowell, Heather M Stapleton, Darrell Holmes, Lehyla Calero, Catherine Tobon, Matthew Perzanowski, Julie B Herbstman
BACKGROUND: Until their phase-out between 2005 and 2013, polybrominated diphenyl ethers (PBDEs) were added to household products including furniture, rugs, and electronics to meet flammability standards. Replacement brominated flame retardant (BFR) chemicals, including 2-ethylhexyl-2,3,4,5 tetrabromobenzoate (TBB) and bis(2-ethylhexyl) 2,3,4,5-tetrabromophthalate (TBPH), which are components of the Firemaster 550(®) commercial mixture, are now being used to meet some flammability standards in furniture...
March 2017: Emerg Contam
https://www.readbyqxmd.com/read/28987643/blood-flow-restricted-resistance-training-in-older-adults-at-risk-of-mobility-limitations
#17
Summer B Cook, Dain P LaRoche, Michelle R Villa, Hannah Barile, Todd M Manini
High-load resistance training (HL) may be contraindicated in older adults due to pre-existing health conditions (e.g. osteoarthritis). Low-load blood flow restricted (BFR) resistance training offers an alternative to HL with potentially similar strength improvement. PURPOSE: To compare muscle strength, cross-sectional area (CSA), physical function, and quality of life (QOL) following 12-weeks of HL or BFR training in older adults at risk of mobility limitations. METHODS: Thirty-six males and females (mean: 75...
December 1, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28966705/blood-flow-restriction-training-implementation-into-clinical-practice
#18
EDITORIAL
William R Vanwye, Alyssa M Weatherholt, Alan E Mikesky
To improve muscular strength and hypertrophy the American College of Sports Medicine recommends moderate to high load resistance training. However, use of moderate to high loads are often not feasible in clinical populations. Therefore, the emergence of low load (LL) blood flow restriction (BFR) training as a rehabilitation tool for clinical populations is becoming popular. Although the majority of research on LL-BFR training has examined healthy populations, clinical applications are emerging. Overall, it appears BFR training is a safe and effective tool for rehabilitation...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28965344/time-course-change-in-muscle-swelling-high-intensity-vs-blood-flow-restriction-exercise
#19
Eduardo D S Freitas, Christopher Poole, Ryan M Miller, Aaron David Heishman, Japneet Kaur, Debra A Bemben, Michael Bemben
This study determined the time course for changes in muscle swelling and plasma volume following high (HI) and low-intensity resistance exercise with blood-flow restriction (LI-BFR). Ten male participants (22.1±3.0 yrs) completed three experimental conditions: high-intensity exercise (HI - 80% of 1RM), low-intensity exercise with BFR (LI-BFR -20% of 1RM, and 160 mmHg of BFR), and control (CON - no exercise or BFR). Muscle cross-sectional area (mCSA), muscle thickness, thigh circumference, and percentage change in plasma volume (PV%∆) were measured...
October 1, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28950398/cardiovascular-responses-to-different-resistance-exercise-protocols-in-elderly
#20
Amanda Veiga Sardeli, Lucas do Carmo Santos, Marina Lívia Venturini Ferreira, Arthur Fernades Gáspari, Bruno Rodrigues, Cláudia Regina Cavaglieri, Mara Patricia Traina Chacon-Mikahil
Increase in muscle mass and strength through resistance exercise (RE) has been highly recommended for healthy aging. On the other hand, RE could lead to acute cardiovascular risks prompted mainly by intense blood pressure elevations and cardiac autonomic imbalance. We compared the cardiovascular responses to three different RE protocols performed by 21 healthy elderly on a leg press machine. The protocols tested were high load (80% 1RM) until muscular failure (HL); low load (30% 1RM) until muscular failure (LL); low load, 30 repetitions followed by 3 sets of 15 repetitions, with 50% blood flow restriction (LL-BFR); and a control session (CON)...
November 2017: International Journal of Sports Medicine
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