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https://www.readbyqxmd.com/read/29160370/alternative-animal-model-for-studies-of-total-skin-thickness-burns
#1
Ana Laura Martins de Andrade, Julia Risso Parisi, Patrícia Brassolatti, Nivaldo Antonio Parizotto
PURPOSE: To present an alternative experimental model of third degree burn of easy reproducibility. METHODS: Eighteen male Wister rats were randomly divided into three groups, 6 of which were allocated to each group. A soldering iron coupled to an aluminum plate was used to produce burn, at a temperature of 150ºC, with different exposure times per group. Group 5 (G5) animals were burned at 150°C with exposure time of 5 seconds; Group 10 (G10) the animals were burned at 150°C with exposure time of 10 seconds and group 15 (G15) the animals were burned at 150°C with exposure time of 15 seconds...
October 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29159698/analysis-of-biosignals-during-immersion-in-computer-games
#2
Mina Yeo, Seokbeen Lim, Gilwon Yoon
The number of computer game users is increasing as computers and various IT devices in connection with the Internet are commonplace in all ages. In this research, in order to find the relevance of behavioral activity and its associated biosignal, biosignal changes before and after as well as during computer games were measured and analyzed for 31 subjects. For this purpose, a device to measure electrocardiogram, photoplethysmogram and skin temperature was developed such that the effect of motion artifacts could be minimized...
November 17, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/29159693/betahistine-dihydrochloride-transdermal-delivery-via-optimized-thermosensitive-gels-percutaneous-absorption-evaluation-using-rat-growth-as-a-biomarker
#3
Mohammed Hassan Elkomy, Shahira F El-Menshawe, Adel Ahmed Ali, Abdelkhalik Ali Halawa, Ahmed S G Srag El-Din
The aim of this study was to develop and optimize a betahistine dihydrochloride (BH) thermoreversible bioadhesive gel intended for transdermal delivery. The gels were obtained via cold method. A full factorial design was employed to investigate the joint effect of Poloxamer 407 concentration (18 and 20%), adhesive polymer type (Polyvinyl pyrolidone, Hydroxypropyl methylcellulose, and Carbopol 934), and adhesive polymer concentration (0.5 and 1.5%) on gelling temperature, viscosity at 37 °C, and adhesion strength...
November 20, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29159321/lie-group-analysis-of-magnetohydrodynamic-tangent-hyperbolic-fluid-flow-towards-a-stretching-sheet-with-slip-conditions
#4
Zakir Ullah, Gul Zaman
In this paper, we studied MHD two dimensional flow of an incompressible tangent hyperbolic fluid flow and heat transfer towards a stretching sheet with velocity and thermal slip. Lie group analysis is used to develop new similarity transformation, using these similarity transformation the governing nonlinear partial differential equation are reduced into a system of coupled nonlinear ordinary differential equation. The obtained system is solved numerically by applying shooting method. Effects of pertinent parameters on the velocity and temperature profiles, skin friction, local Nusselt number are graphically presented and discussed...
November 2017: Heliyon
https://www.readbyqxmd.com/read/29157880/mechanical-properties-of-harbor-seal-skin-and-blubber-a-test-of-anisotropy
#5
Molly E Grear, Michael R Motley, Stephanie B Crofts, Amanda E Witt, Adam P Summers, Petra Ditsche
The skin and blubber of marine mammals provides protection from the surrounding environment, whether that be temperature, microbes, or direct mechanical impacts. To understand the ability of harbor seals' (Phoca vitulina) skin and blubber to resist blunt force trauma, we tested the material properties of these tissues. We quantified two mechanical properties of the tissue: tensile strength and tensile stiffness, at two test speeds, three sample orientations, and two age groups. We found significant differences in material properties between test speeds, orientation, and age of the animal, but did not find a large difference with orientation...
November 11, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29157766/safety-of-rolled-and-folded-cotton-blankets-warmed-in-130%C3%A2-f-and-200%C3%A2-f-cabinets
#6
Patricia A Kelly, Elizabeth C Morse, Joslin V Swanfeldt, Amy N Adams, Craig G Crandall, Debby A Rush, Mary L Krogh, Susan K Cooper
PURPOSE: In 2014, ECRI recommended that blanket warming cabinets be set at a maximum temperature of 130°F because of safety concerns with warmed rolled and folded blankets. We could find no research to support this recommendation. The purpose of this study was to measure skin temperatures and thermal comfort in healthy volunteers before and after application of folded and rolled dry cotton blankets warmed in 130°F or 200°F cabinets. DESIGN: Randomized, descriptive, and comparative study...
December 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/29155199/physiochemical-and-functional-properties-of-tiger-puffer-takifugu-rubripes-skin-gelatin-as-affected-by-extraction-conditions
#7
Jinfeng Pan, Qi Li, Hui Jia, Lining Xia, Wengang Jin, Meijun Shang, Chang Xu, Xiuping Dong
The study investigated physiochemical and functional properties of gelatins from tiger puffer skin (GTPS) extracted with warm-water method at 45, 55 and 65°C for 3, 6 and 12h. GTPS45 exhibited strong γ-, β-, α1- and α2-chains, but they faded with the presence of fragments (<80 KDa) in other GTPS. As the increase of temperature and time, amide I and A were shifted to higher wavenumber and their amplitudes in GTPS65-12 decreased. Lightness declined while redness and yellowness were enhanced. Gel strength was in a range of 144...
November 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29154261/electrical-impedance-of-the-torso-is-associated-with-the-pressure-pain-threshold-on-myofascial-trigger-points-in-patients-with-chronic-neck-pain-a-cross-sectional-study
#8
Almir Vieira Dibai-Filho, Marília Artese Barros, Alessandra Kelly de Oliveira, Rinaldo Roberto de Jesus Guirro
BACKGROUND: Myofascial trigger points are dysfunctional structures present in skeletal muscles and are related to sensory, motor, and autonomic changes. Despite scientific advances in recent decades in the measurement of musculoskeletal pain, evaluation of this clinical phenomenon is supported with instruments that, although valid and reliable, have a considerable degree of subjectivity. OBJECTIVE: To correlate electrical impedance of the upper limbs and torso with pain intensity, functional capacity, catastrophizing, pressure pain threshold, and skin temperature on myofascial trigger points in the upper trapezius muscle of patients with neck pain...
November 10, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29153867/impact-of-upper-body-precooling-during-warm-up-on-subsequent-time-trial-paced-cycling-in-the-heat
#9
Charles P Katica, Jonathan E Wingo, Robert L Herron, Greg A Ryan, Stacy H Bishop, Mark Richardson
OBJECTIVES: The purpose of this study was to test the hypothesis that cooling the upper body during a warm-up enhances performance during a subsequent 16.1-km simulated cycling time trial in a hot environment. DESIGN: Counterbalanced, repeated measures design. METHODS: Eight trained, male cyclists (peak oxygen uptake=57.8±5.0mLkg(-1)min(-1)) completed two simulated 16.1-km time trials in a hot environment (35.0±0.5°C, 43.8±2.0% relative humidity) each separated by 72h...
October 16, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29152236/low-levels-of-very-long-chain-n-3-pufa-in-atlantic-salmon-salmo-salar-diet-reduce-fish-robustness-under-challenging-conditions-in-sea-cages
#10
Marta Bou, Gerd M Berge, Grete Baeverfjord, Trygve Sigholt, Tone-Kari Østbye, Bente Ruyter
The present study aimed to determine the minimum requirements of the essential n-3 fatty acids EPA and DHA in Atlantic salmon (Salmo salar) that can secure their health under challenging conditions in sea cages. Individually tagged Atlantic salmon were fed 2, 10 and 17 g/kg of EPA + DHA from 400 g until slaughter size (about 3·5 kg). The experimental fish reared in sea cages were subjected to the challenging conditions typically experienced under commercial production. Salmon receiving the lowest EPA + DHA levels showed lower growth rates in the earlier life stages, but no significant difference in final weights at slaughter...
2017: Journal of Nutritional Science
https://www.readbyqxmd.com/read/29152198/trading-heat-and-hops-for-water-dehydration-effects-on-locomotor-performance-thermal-limits-and-thermoregulatory-behavior-of-a-terrestrial-toad
#11
Rodolfo C O Anderson, Denis V Andrade
Due to their highly permeable skin and ectothermy, terrestrial amphibians are challenged by compromises between water balance and body temperature regulation. The way in which such compromises are accommodated, under a range of temperatures and dehydration levels, impacts importantly the behavior and ecology of amphibians. Thus, using the terrestrial toad Rhinella schneideri as a model organism, the goals of this study were twofold. First, we determined how the thermal sensitivity of a centrally relevant trait-locomotion-was affected by dehydration...
November 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29151980/synbiotic-effects-of-%C3%AE-glucans-from-cauliflower-mushroom-and-lactobacillus-fermentum-on-metabolic-changes-and-gut-microbiome-in-estrogen-deficient-rats
#12
Seong-Yeop Jeong, Suna Kang, Cao Shi Hua, Zhang Ting, Sunmin Park
Background: We investigated whether the long-term consumption of a symbiotic formulation with Lactobacillus fermentum (probiotic) and β-glucan from cauliflower mushroom (prebiotic) would delay the progression of post-menopausal symptoms in ovariectomized (OVX) rats and explored their mechanisms of action, including changes in gut microbiota. Methods: OVX rats were fed with high-fat diets containing 1% dextrin (control), 1% lyophilized cauliflower mushroom extract (CFM), 0...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/29145312/bilateral-femoral-posterior-neurocutaneous-perforater-flap-successfully-treating-fournier-gangrene-a-case-report
#13
Tao Wang, Gang Zhao, Yong-Jun Rui, Jing-Yi Mi
RATIONALE: Necrotizing fasciitis (NF), characterized by widespread fascial necrosis, is a rare disease in clinic. Fournier gangrene (FG) is a special type of NF involved of perineum and scrotum. To our knowledge, no article has reported on bilateral femoral posterior neurocutaneous perforater flap treating for FG. PATIENT CONCERNS: A 61-year-old Chinese male complained of perineal skin necrosis for 19 days. The patient received treatment in other hospital due to chronic bronchitis on April 15th and body temperature ranged from 38 to 39 °C...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143240/dynamic-infrared-thermography-dirt-for-assessment-of-skin-blood-perfusion-in-cranioplasty-a-proof-of-concept-for-qualitative-comparison-with-the-standard-indocyanine-green-video-angiography-icga
#14
P Rathmann, C Chalopin, D Halama, P Giri, J Meixensberger, D Lindner
PURPOSE: Complications in wound healing after neurosurgical operations occur often due to scarred dehiscence with skin blood perfusion disturbance. The standard imaging method for intraoperative skin perfusion assessment is the invasive indocyanine green video angiography (ICGA). The noninvasive dynamic infrared thermography (DIRT) is a promising alternative modality that was evaluated by comparison with ICGA. METHODS: The study was carried out in two parts: (1) investigation of technical conditions for intraoperative use of DIRT for its comparison with ICGA, and (2) visual and quantitative comparison of both modalities in a proof of concept on nine patients...
November 15, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29141407/partial-solar-radiation-exclusion-with-color-shade-nets-reduce-the-degradation-of-organic-acids-and-flavonoids-of-grape-berry-vitis-vinifera-l
#15
Johan Martínez-Lüscher, Christopher Cody Lee Chen, Luca Brillante, Sahap Kaan Kurtural
The incidence of solar radiation on red-skinned grapes can promote the synthesis of flavonoid desirable for wine production, elevated temperature may impair their accumulation. We performed a shade cloth trial covering the fruit zone (from pepper-corn size to maturity) with four polyethylene 1-meter curtains with different optical properties (20% shading factor Pearl colored and 40% shading factor Aluminet, Blue and Black colored) and a Control with no cover. Cluster temperature was 3.7°C lower on the Southwest side in Black-40% clusters during the warmest part of the day compared to Control...
November 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29140896/cold-water-ingestion-improves-exercise-tolerance-of-heat-sensitive-people-with-ms
#16
Georgia K Chaseling, Davide Filingeri, Michael Barnett, Phu Hoang, Scott L Davis, Ollie Jay
PURPOSE: Heat intolerance commonly affects the exercise capacity of people with multiple sclerosis (MS) during bouts of hot weather. Cold-water ingestion is a simple cooling strategy but its efficacy for prolonging exercise capacity with MS remains undetermined. We sought to identify whether cold-water ingestion blunts exercise-induced rises in body temperature and improves exercise tolerance in heat-sensitive individuals with MS. METHODS: On two separate occasions, 20 participants (10 relapsing-remitting MS (EDSS: 1-5); 10 age-matched healthy controls (CON)) cycled at ~40% VO2max at 30°C, 30%RH until volitional exhaustion (or a maximum of 60 min)...
November 15, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29138055/merkel-cells-sense-cooling-with-trpm8-channels
#17
Valentine Bouvier, Yann Roudaut, Nancy Osorio, Jean-Marc Aimonetti, Edith Ribot-Ciscar, Virginie Penalba, Thierry Merrot, Nicolas Lebonvallet, Christelle Le Gall-Ianotto, Laurent Misery, Patrick Delmas, Marcel Crest
In the skin, Merkel cells (MCs) connect with keratinocytes and Aβ nerve fibers to form a touch receptor which functions as a slow adapting mechanoreceptor (SA1 receptor). In human and mouse MCs, we observed an increased concentration of intracellular Ca(2+) ions in response to cold temperature and transient receptor potential melastatine 8 (TRPM8) ion channel agonists. A reduction in the response to cooling and TRPM8 agonists occurred following addition of TRPM8 antagonists, as well as in TRPM8 knockout mice...
November 11, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29137118/modeling-skin-injury-from-hot-spills-on-clothing
#18
Torgrim Log
The present work analyzes scald burns from hot beverages, such as coffee and tea, spilled on the lap, i.e., an incident that may occur in daily life. The Pennes bioheat equation is solved numerically for small spills wetting the clothing, i.e., the fabric prevents the spilled liquid from draining away. Temperatures are analyzed in the wetted fabric and the skin layers and the resulting skin injury is calculated based on the basal layer temperature. Parameters influencing burn severity, such as clothing thickness, liquid temperature, removal of fabric and thermal effects of post scald water cooling are analyzed...
November 11, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29133242/revisiting-in-vitro-release-test-for-topical-gel-formulations-the-effect-of-osmotic-pressure-explored-for-better-bio-relevance
#19
Soorin Jeong, Seonghee Jeong, Sungyoon Chung, Aeri Kim
Release test methods for topical dosage forms including pharmacopeial tests require a large volume of release media, with limited application for high throughput screening. In the present study, we evaluated Transwell assay to miniaturize the release test method for optimization of thermoreversible topical gel formulations. We also explored the osmotic effect on the in vitro release rates from gel formulations to understand the bio-relevance of release media. An extreme vertices type of mixture design in Minitab®16 generated eleven formulations composed of poloxamer 407, poloxamer 188, and phosphate buffered saline (PBS)...
November 11, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29132305/associations-between-skin-barrier-characteristics-skin-conditions-and-health-of-aged-nursing-home-residents-a-multi-center-prevalence-and-correlational-study
#20
Elisabeth Hahnel, Ulrike Blume-Peytavi, Carina Trojahn, Jan Kottner
BACKGROUND: Geriatric patients are affected by a range of skin conditions and dermatological diseases, functional limitations and chronic diseases. Skin problems are highly prevalent in elderly populations. Aim of this study was to investigate possible associations between health, functional and cutaneous variables in aged long-term care residents. METHODS: This observational, cross-sectional, descriptive prevalence study was conducted in a random sample of 10 institutional long-term care facilities in Berlin...
November 13, 2017: BMC Geriatrics
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