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https://www.readbyqxmd.com/read/28433177/kinetic-study-of-thermal-degradation-of-chitosan-as-a-function-of-deacetylation-degree
#1
M A Gámiz-González, D M Correia, S Lanceros-Mendez, V Sencadas, J L Gómez Ribelles, A Vidaurre
Thermal degradation of chitosan with varying deacetylation degree (DD) ranging between 50 and 85% was analyzed by dynamic thermogravimetric analysis at different heating rates. The present study focused on the temperature range between 500 and 800K, above water evaporation. Thermal degradation showed a main degradation stage in this temperature interval with a second stage that appeared in the weight derivative curves as a shoulder in the high temperature side of the main peak with increasing intensity as the DD decreased...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28432514/breast-cancer-treatment-costs-in-younger-privately-insured-women
#2
Benjamin T Allaire, Donatus U Ekwueme, Diana Poehler, Cheryll C Thomas, Gery P Guy, Sujha Subramanian, Justin G Trogdon
PURPOSE: Younger women (under age 45 years) diagnosed with breast cancer often face more aggressive tumors, higher treatment intensity, lower survival rates, and greater financial hardship. The purpose of this study was to estimate breast cancer costs by stage at diagnosis during the first 18 months of treatment for privately insured younger women. METHODS: We analyzed North Carolina cancer registry data linked to claims data from private insurers from 2003 to 2010...
April 21, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28431865/statin-use-and-other-factors-associated-with-mortality-after-major-lower-extremity-amputation
#3
Charles DeCarlo, Larry Scher, Saadat Shariff, John Phair, Evan Lipsitz, Karan Garg
OBJECTIVE: Above-knee amputations (AKAs) and below-knee amputations (BKAs) are associated with high postoperative mortality rates. In this study, we examined factors associated with 30-day, 90-day, and 1-year mortality in patients who underwent a major lower extremity amputation. METHODS: We queried a prospectively collected institutional database for all patients who underwent AKA or BKA with primary or secondary closure, during a 5-year period, between November 2009 and November 2014...
April 18, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28431425/the-association-of-frailty-with-outcomes-and-resource-use-after-emergency-general-surgery-a-population-based-cohort-study
#4
Daniel I McIsaac, Husein Moloo, Gregory L Bryson, Carl van Walraven
BACKGROUND: Older patients undergoing emergency general surgery (EGS) experience high rates of postoperative morbidity and mortality. Studies focused primarily on elective surgery indicate that frailty is an important predictor of adverse outcomes in older surgical patients. The population-level effect of frailty on EGS is poorly described. Therefore, our objective was to measure the association of preoperative frailty with outcomes in a population of older patients undergoing EGS. METHODS: We created a population-based cohort study using linked administrative data in Ontario, Canada, that included community-dwelling individuals aged >65 years having EGS...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431408/the-effects-of-exercise-modality-during-additional-high-intensity-interval-training-upon-aerobic-fitness-and-strength-in-powerlifting-and-strongman-athletes
#5
Patroklos Androulakis-Korakakis, Louis Langdown, Adam Lewis, James Fisher, Paulo Gentil, Antonio Paoli, James Steele
Powerlifters and strongman athletes have a necessity for optimal levels of muscular strength whilst maintaining sufficient aerobic capacity to perform and recover between events. HIIT has been popularized for its efficacy in improving both aerobic fitness and strength but never assessed within the aforementioned population group. The present study looked to compare the effect of exercise modality, e.g. a traditional aerobic mode (AM), and strength mode, (SM), during HIIT upon aerobic fitness and strength. Sixteen well resistance trained male participants, currently competing in powerlifting and strongman events, completed 8 weeks of approximately effort- and volume-matched HIIT in 2 groups: AM (cycling, n=8) and SM (resistance training, n=8)...
April 21, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28429876/iodine-131-meta-iodobenzylguanidine-therapy-for-patients-with-newly-diagnosed-high-risk-neuroblastoma
#6
REVIEW
Kathelijne Cjm Kraal, Elvira C van Dalen, Godelieve Am Tytgat, Berthe Lf Van Eck-Smit
BACKGROUND: Patients with newly diagnosed high-risk (HR) neuroblastoma (NBL) still have a poor outcome, despite multi-modality intensive therapy. This poor outcome necessitates the search for new therapies, such as treatment with (131)I-meta-iodobenzylguanidine ((131)I-MIBG). OBJECTIVES: To assess the efficacy and adverse effects of (131)I-MIBG therapy in patients with newly diagnosed HR NBL. SEARCH METHODS: We searched the following electronic databases: the Cochrane Central Register of Controlled Trials (CENTRAL; the Cochrane Library 2016, Issue 3), MEDLINE (PubMed) (1945 to 25 April 2016) and Embase (Ovid) (1980 to 25 April 2016)...
April 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28427433/prevalence-of-subclinical-mastitis-in-finnish-dairy-cows-changes-during-recent-decades-and-impact-of-cow-and-herd-factors
#7
Heidi Hiitiö, Johanna Vakkamäki, Heli Simojoki, Tiina Autio, Jouni Junnila, Sinikka Pelkonen, Satu Pyörälä
BACKGROUND: The dairy industry has undergone substantial structural changes as intensive farming has developed during recent decades. Mastitis continues to be the most common production disease of dairy cows. Nationwide surveys of mastitis prevalence are useful in monitoring udder health of dairy herds and to study the impact of structural changes on the dairy industry. This survey on bovine subclinical mastitis was the first based on cow composite milk somatic cell count (SCC) data from the Finnish national health monitoring and milk recording database...
April 20, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28426160/assessment-and-support-during-early-labour-for-improving-birth-outcomes
#8
REVIEW
Shinobu Kobayashi, Nobutsugu Hanada, Masayo Matsuzaki, Kenji Takehara, Erika Ota, Hatoko Sasaki, Chie Nagata, Rintaro Mori
BACKGROUND: The progress of labour in the early or latent phase is usually slow and may include painful uterine contractions. Women may feel distressed and lose their confidence during this phase. Support and assessment interventions have been assessed in two previous Cochrane Reviews. This review updates and replaces these two reviews, which have become out of date. OBJECTIVES: To investigate the effectiveness of assessment and support interventions for women during early labour...
April 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28424870/high-intensity-interval-training-does-not-impair-strength-gains-in-response-to-resistance-training-in-premenopausal-women
#9
Paulo Gentil, Claudio Andre Barbosa de Lira, Suedi Gonçalves Cardoso Filho, Cauê Vazquez La Scala Teixeira, James Steele, James Fisher, Juliana Alves Carneiro, Mário Hebling Campos
PURPOSE: To compare the increases in upper- and lower-body muscle strength in premenopausal women performing resistance training (RT) alone or alongside concurrent high-intensity interval training (CT). METHODS: Sixteen women (26-40 years) were randomly assigned into two groups that performed either RT or CT. Both groups performed the same RT program; however, CT performed additional high-intensity interval training (HIIT) on a bicycle ergometer before RT. The study lasted 8 weeks and the participants were tested for ten repetition maximum (10RM) load in elbow flexion (barbell biceps curl) and knee extension exercises pre- and post-intervention...
April 19, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28422982/assessment-ecological-risk-of-heavy-metal-caused-by-high-intensity-land-reclamation-in-bohai-bay-china
#10
Gaoru Zhu, Zhenglei Xie, Tuoyu Li, Zongwen Ma, Xuegong Xu
The article examines the detailed spatial and temporal distributions of coastal reclamation in the northwest coast of Bohai Bay experiencing rapid coastal reclamation in China from 1974 to 2010 in annual intervals. Moreover, soil elements properties and spatial distribution in reclaimed area and inform the future coastal ecosystems management was also analyzed. The results shows that 910.7 km2 of coastal wetlands have been reclaimed and conversed to industrial land during the past 36 years. It covers intertidal beach, shallow sea and island with a percentage of 76...
2017: PloS One
https://www.readbyqxmd.com/read/28420673/a-single-bout-of-high-intensity-interval-training-reduces-awareness-of-subsequent-hypoglycemia-in-patients-with-type-1-diabetes
#11
Hanne M Rooijackers, Evita C Wiegers, Marinette van der Graaf, Dick H Thijssen, Roy P C Kessels, Cees J Tack, Bastiaan E de Galan
High-intensity interval training (HIIT) gains increasing popularity in patients with diabetes. HIIT acutely increases plasma lactate levels. This may be important, since administration of lactate during hypoglycemia suppresses symptoms and counterregulation, whilst preserving cognitive function. We tested the hypothesis that HIIT acutely reduces awareness of hypoglycemia and attenuates hypoglycemia-induced cognitive dysfunction. In a randomized crossover trial, patients with type 1 diabetes and normal awareness of hypoglycemia (NAH), patients with impaired awareness of hypoglycemia (IAH), and healthy participants (n=10 per group) underwent a hyperinsulinemic-hypoglycemic (2...
April 18, 2017: Diabetes
https://www.readbyqxmd.com/read/28419814/high-intensity-focused-ultrasound-for-treatment-of-symptomatic-benign-thyroid-nodules-a-prospective-study
#12
Brian Hung-Hin Lang, Yu-Cho Woo, Carlos K H Wong
Purpose To evaluate first-year efficacy and changes in pressure symptoms and health-related quality of life (HRQOL) after ultrasonographically (US) guided high-intensity focused ultrasound (HIFU) ablation of symptomatic benign thyroid nodules. Materials and Methods After ethics approval and informed consent were obtained, a prospective trial was conducted. Patients with a symptomatic benign thyroid nodule were given a choice of HIFU treatment or active surveillance. Clinical and US examinations, pressure symptom scores (visual analog scale), and HRQOL questionnaires (short form-12 survey) were evaluated at baseline and at 3, 6, and 12 months...
April 18, 2017: Radiology
https://www.readbyqxmd.com/read/28419206/short-term-preoperative-exercise-therapy-does-not-improve-long-term-outcome-after-lung-cancer-surgery-a-randomized-controlled-study%C3%A2
#13
Wolfram Karenovics, Marc Licker, Christoph Ellenberger, Michel Christodoulou, John Diaper, Chetna Bhatia, John Robert, Pierre-Olivier Bridevaux, Frédéric Triponez
OBJECTIVES: Poor aerobic fitness is a potential modifiable risk factor for long-term survival and quality of life in patients with lung cancer. This randomized trial evaluates the impact of adding rehabilitation (Rehab) with high-intensity interval training (HIIT) before lung cancer surgery to enhance cardiorespiratory fitness and improve long-term postoperative outcome. METHODS: Patients with operable lung cancer were randomly assigned to usual care (UC, n  = 77) or to intervention group (Rehab, n  = 74) that entailed HIIT that was implemented only preoperatively...
April 17, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28419003/high-intensity-interval-training-for-older-people-no-pain-and-lots-of-gain
#14
Loretta DiPietro
No abstract text is available yet for this article.
April 17, 2017: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/28418103/neurogenic-and-myogenic-patterns-of-electrical-activity-in-isolated-intact-mouse-colon
#15
T J Hibberd, M Costa, L Travis, S J H Brookes, D A Wattchow, J Feng, H Hu, N J Spencer
BACKGROUND: Relatively little is known about the electrical rhythmicity of the whole colon, where long neural pathways are preserved. METHODS: Smooth muscle electrical activity was recorded extracellularly from the serosa of isolated flat-sheet preparations consisting of the whole mouse colon (n=31). KEY RESULTS: Two distinct electrical patterns were observed. The first, long intense spike bursts, occurred every 349±256 seconds (0.2±0.2 cpm), firing action potentials for 31±11 seconds at 2...
April 18, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28412280/evaluation-of-sample-preparation-protocols-for-spider-venom-profiling-by-maldi-tof-ms
#16
Ondřej Bočánek, Ondrej Šedo, Stano Pekár, Zbyněk Zdráhal
Spider venoms are highly complex mixtures containing biologically active substances with potential for use in biotechnology or pharmacology. Fingerprinting of venoms by Matrix-Assisted Laser Desorption-Ionization - Time of Flight Mass Spectrometry (MALDI-TOF MS) is a thriving technology, enabling the rapid detection of peptide/protein components that can provide comparative information. In this study, we evaluated the effects of sample preparation procedures on MALDI-TOF mass spectral quality to establish a protocol providing the most reliable analytical outputs...
April 12, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28412162/incidence-and-clinical-features-of-sacral-insufficiency-fracture-in-the-emergency-department
#17
Yasuaki Tamaki, Akihiro Nagamachi, Kazumasa Inoue, Makoto Takeuchi, Kosuke Sugiura, Yasuyuki Omichi, Shunsuke Tamaki, Takashi Chikawa, Koichi Sairyo, Keisuke Adachi
INTRODUCTION: A sacral insufficiency fracture (SIF) often manifests as low back pain or sciatica in the absence of any antecedent trauma. These fractures may be missed because of lack of appropriate imaging. The purpose of this study was to clarify the incidence and clinical features of SIF as well as the characteristic findings on magnetic resonance imaging (MRI) of the lumbar spine. MATERIALS AND METHODS: The study participants comprised 250 patients (132 male, 118 female; mean age 58...
March 18, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28410691/quantification-of-the-uncertainties-of-a-biological-model-and-their-impact-on-variable-rbe-proton-treatment-plan-optimization
#18
A F Resch, G Landry, F Kamp, G Cabal, C Belka, J J Wilkens, K Parodi, G Dedes
PURPOSE: In proton radiation therapy, a relative biological effectiveness (RBE) equal to 1.1 is currently assumed, although biological experiments show that it is not constant. The purpose of this study was to quantify the uncertainties of a published biological model and explore their impact on variable RBE treatment plan (TP) optimization. METHODS: Two patient cases with a high and a low (α/β)x tumor were investigated. Firstly, intensity modulated proton therapy TPs assuming constant RBE were derived, and subsequently the variable RBE weighted dose (RWD), including the uncertainty originating in the fit to the experimental data and the uncertainty of the (α/β)x, were calculated...
April 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28409690/salivary-cortisol-concentration-after-high-intensity-interval-exercise-time-of-day-and-chronotype-effect
#19
Matteo Bonato, Antonio La Torre, Marina Saresella, Ivana Marventano, Giampiero Merati, Jacopo Antonino Vitale
Due to personal and working necessities, the time for exercise is often short, and scheduled early in the morning or late in the afternoon. Cortisol plays a central role in the physiological and behavioral response to a physical challenge and can be considered as an index of exercise stress. Therefore, the aim of this study was to evaluate the influence of the circadian phenotype classification on salivary cortisol concentration in relation to an acute session of high-intensity interval exercise (HIIE) performed at different times of the day...
April 14, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28409397/the-effect-of-high-intensity-aerobic-interval-training-on-markers-of-systemic-inflammation-in-sedentary-populations
#20
Nicholas G Allen, Samuel M Higham, Amy E Mendham, Tegan E Kastelein, Penelope S Larsen, Rob Duffield
PURPOSE: This study examined the effects of high-intensity interval training (HIIT; 30 s sprint, 4-5 min passive recovery) and prolonged intermittent sprint training (PIST; 10 s sprint, 2-3 min moderate exercise) on the systemic inflammatory markers C-reactive protein (CRP) and tumor necrosis factor-α (TNF-α), aerobic capacity, and anthropometry in a middle-aged, sedentary population. METHODS: Fifty-five sedentary adults (age 49.2 ± 6.1 years) were randomised into HIIT (n = 20), PIST (n = 21), or a sedentary control group (CTRL n = 14)...
April 13, 2017: European Journal of Applied Physiology
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