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Temperature skin

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https://www.readbyqxmd.com/read/29341311/decreased-thermal-sweating-of-central-sudomotor-mechanism-in-african-and-korean-men
#1
Jeong Beom Lee, Jeong Ho Kim
OBJECTIVE: Tropical natives sweat less and preserve more body fluid than temperate natives, tolerating heat stress. However, the mechanisms involved in such sweating reduction have not been fully elucidated. We examined the sudomotor responses of men of African (n = 36) and Korean (n = 41) ancestry during hot water (43 °C) leg immersion (central sudomotor response). Correlations between mean body temperature, basal metabolic rate (BMR), and sweat rate were also examined. METHODS: All procedures were done in an automated climate chamber...
January 17, 2018: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/29339813/a-new-group-of-synthetic-phenolic-containing-amphiphilic-molecules-for-multipurpose-applications-physico-chemical-characterization-and-cell-toxicity-study
#2
Sampson Anankanbil, Bianca Pérez, Iva Fernandes, Katarzyna Magdalena Widzisz, Zegao Wang, Nuno Mateus, Zheng Guo
Nine synthetic amphiphilic phenolic lipids, varied in phenolic moiety (caffeoyl/dimethylcaffeoyl) and fatty acid chain lengths (8-18) were characterized by differential scanning calorimetry (DSC), temperature-ramp Fourier transform infra-red spectroscopy (FT-IR) and atomic force microscopy (AFM). FT-IR and DSC results revealed that the physical state and lateral packing of synthetic molecules were largely governed by fatty acyls. The critical micelle concentrations (CMC) of synthetic lipids was in the range of 0...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339793/skin-inspired-highly-stretchable-and-conformable-matrix-networks-for-multifunctional-sensing
#3
Qilin Hua, Junlu Sun, Haitao Liu, Rongrong Bao, Ruomeng Yu, Junyi Zhai, Caofeng Pan, Zhong Lin Wang
Mechanosensation electronics (or Electronic skin, e-skin) consists of mechanically flexible and stretchable sensor networks that can detect and quantify various stimuli to mimic the human somatosensory system, with the sensations of touch, heat/cold, and pain in skin through various sensory receptors and neural pathways. Here we present a skin-inspired highly stretchable and conformable matrix network (SCMN) that successfully expands the e-skin sensing functionality including but not limited to temperature, in-plane strain, humidity, light, magnetic field, pressure, and proximity...
January 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29339577/a-wearable-pressure-sensor-based-on-ultra-violet-ozone-microstructured-carbon-nanotube-polydimethylsiloxane-arrays-for-electronic-skins
#4
Guohui Yu, Jingdong Hu, Jianping Tan, Yang Gao, Yongfeng Lu, Fu-Zhen Xuan
Pressure sensors with high performance (e.g., a broad pressure sensing range, high sensitivities, rapid response/relaxation speeds, temperature-stable sensing), as well as a cost-effective and highly efficient fabrication method are highly desired for electronic skins. In this research, a high-performance pressure sensor based on microstructured carbon nanotube/polydimethylsiloxane arrays was fabricated using an ultra-violet/ozone (UV/O3) microengineering technique. The UV/O3 microengineering technique is controllable, cost-effective, and highly efficient since it is conducted at room temperature in an ambient environment...
January 17, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29338262/roasted-barley-extract-affects-blood-flow-in-the-rat-tail-and-increases-cutaneous-blood-flow-and-skin-temperature-in-humans
#5
Hiroshi Ashigai, Yoshimasa Taniguchi, Yasuko Matsukura, Emiko Ikeshima, Keiko Nakashima, Mai Mizutani, Hiroaki Yajima
Roasted barley extract (RBE, "Mugicha") is a traditional Japanese beverage reported to improve blood viscosity and affect food functionality. RBE is suggested to contain 2,5-diketopiperazines, which are the functional component with neuroprotective and immunostimulatory effects that are produced in food through roasting. In this study, we investigated the effects of RBE on blood circulation, both clinically and in rats. At first, we confirmed five 2,5-diketopiperazine derivatives in RBE by LC-MS analysis. Secondary, we revealed that RBE affects blood flow in the rat tail, and compared the efficacy on rat tail blood flow among five 2,5-diketopiperazine in RBE...
January 17, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29332101/is-kinesio-taping-to-generate-skin-convolutions-effective-for-increasing-local-blood-circulation
#6
Jae-Man Yang, Jung-Hoon Lee
BACKGROUND It is unclear whether traditional application of Kinesio taping, which produces wrinkles in the skin, is effective for improving blood circulation. This study investigated local skin temperature changes after the application of an elastic therapeutic tape using convolution and non-convolution taping methods (CTM/NCTM). MATERIAL AND METHODS Twenty-eight pain-free men underwent CTM and NCTM randomly applied to the right and left sides of the lower back. Using infrared thermography, skin temperature was measured before, immediately after application, 5 min later, 15 min later, and after the removal of the tape...
January 14, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29327283/persea-americana-mill-crude-extract-exhibits-antinociceptive-effect-on-uvb-radiation-induced-skin-injury-in-mice
#7
Viviane C K N Deuschle, Indiara Brusco, Mariana Piana, Henrique Faccin, Leandro Machado de Carvalho, Sara Marchesan Oliveira, Carine Viana
Persea americana, popularly known as avocado, has been empirically used as analgesic and anti-inflammatory including in the skin disorder treatment. Species of the genus Persea also show a photoprotective effect against UVB radiation. We investigated the antinociceptive and anti-inflammatory effects from a topical formulation containing the P. americana leaf extract in a UVB irradiation-induced burn model in mice and performed a gel-formulation stability study. The antinociceptive and anti-inflammatory effect was evaluated through mechanical allodynia, paw oedema, and inflammatory cell infiltration...
January 11, 2018: Inflammopharmacology
https://www.readbyqxmd.com/read/29326410/-factors-predicting-the-interface-pressure-related-to-pressure-injury-in-intensive-care-unit-patients
#8
Ji Seon Shine, Soo Jin Kim, Ji Hyun Lee, Mi Yu
PURPOSE: Interface pressure is a factor that contributes to the occurrence of pressure injuries. This study aimed to investigate interface pressure at common sites of pressure injury (occipital, gluteal and peritrochanteric areas), to explore the relationships among risk factors, skin condition and interface pressure, and to identify risk factors influencing interface pressure. METHODS: A total of 100 patients admitted to the intensive care unit were enrolled at a tertiary teaching hospital in Korea...
December 2017: Journal of Korean Academy of Nursing
https://www.readbyqxmd.com/read/29323578/effects-of-black-cohosh-and-estrogen-on-core-body-and-tail-skin-temperatures-in-ovariectomized-rats-by-telemetric-monitoring-with-dual-thermistor-probes
#9
Y Sun, L H Qin, X Chen, X Yan, L Mao, W Bai, J Kang
OBJECTIVES: To investigate the effects of black cohosh and estrogen on the temperature in ovariectomized rats, the core body temperature (CBT) and tail-skin temperature (TST) were simultaneously monitored and the relationship between these two temperatures was explored. METHODS: Twenty-four female Sprague-Dawley rats aged 8 weeks were randomly divided into four groups: sham-operated (SHAM), ovariectomized (OVX), OVX treated with estradiol valerate (OVX + E), and OVX treated with isopropanolic black cohosh extract (OVX + ICR)...
January 11, 2018: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/29322523/prevalence-of-pollen-induced-allergic-rhinitis-with-high-pollen-exposure-in-grasslands-of-northern-china
#10
Xue-Yan Wang, Ting-Ting Ma, Xiao-Yan Wang, Yan Zhuang, Xiang-Dong Wang, Hui-Yu Ning, Hai-Yun Shi, Rui-Li Yu, Dan Yan, Hong-Dong Huang, Yong-Fei Bai, Guang-Liang Shan, Biao Zhang, Qing-Kun Song, Yan-Fen Zhang, Tie-Jun Zhang, Da-Zhong Jia, Xi-Long Liu, Zhen-Xiang Kang, Wei-Jun Yan, Ba-Te Yang, Xiu-Zhi Bao, Shu-Hua Sun, Fang-Fang Zhang, Wen-Hui Yu, Chao-Lu Bai, Tang Wei, Tong Yang, Tao-Qiong Ma, Xue-Bin Wu, Jian-Guo Liu, Hui Du, Luo Zhang, Yong Yan, De-Yun Wang
BACKGROUND: The aim of this study was to investigate the prevalence of epidemiologic and physician-diagnosed pollen-induced AR (PiAR) in the grasslands of northern China, and to study the impact of the intensity and time of pollen exposure on PiAR prevalence. METHODS: A multistage, clustered and proportionately stratified random sampling with a field-interviewer administrated survey study was performed together with skin prick tests (SPT) and measurements of the daily pollen count...
January 10, 2018: Allergy
https://www.readbyqxmd.com/read/29320678/effect-of-ceramide-tail-length-on-the-structure-of-model-stratum-corneum-lipid-bilayers
#11
Timothy C Moore, Remco Hartkamp, Christopher R Iacovella, Annette L Bunge, Clare McCabe
Lipid bilayers composed of non-hydroxy sphingosine ceramide (CER NS), cholesterol (CHOL), and free fatty acids (FFAs), which are components of the human skin barrier, are studied via molecular dynamics simulations. Since mixtures of these lipids exist in dense gel phases with little molecular mobility at physiological conditions, care must be taken to ensure that the simulations become decorrelated from the initial conditions. Thus, we propose and validate an equilibration protocol based on simulated tempering, in which the simulation takes a random walk through temperature space, allowing the system to break out of metastable configurations and hence become decorrelated from its initial configuration...
January 9, 2018: Biophysical Journal
https://www.readbyqxmd.com/read/29320595/safety-and-efficacy-of-a-non-invasive-1060-nm-diode-laser-for-fat-reduction-of-the-abdomen
#12
Lawrence S Bass, Sean T Doherty
BACKGROUND: Changes in temperature are known to produce apoptosis in adipocytes. This study examines the use of a non-invasive treatment that applies 1060 nm laser energy transcutaneously to hyperthermically induce disruption of fat cells in the abdomen. METHODS: Thirty-five subjects received application of 1060 nm laser on the abdomen for fat reduction. Ultrasound images and high-resolution two-dimensional photography were recorded at baseline, 6 weeks, and 12 weeks post treatment...
January 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29319896/skin-inflammation-exacerbates-food-allergy-symptoms-in-epicutaneously-sensitized-mice
#13
Akiko Kawasaki, Naohiro Ito, Hiroki Murai, Motoko Yasutomi, Hironobu Naiki, Yusei Ohshima
BACKGROUND: Cutaneous exposure to food antigen through impaired skin barrier has been shown to induce epicutaneous sensitization, thereby causing IgE-mediated food allergies. OBJECTIVE: We examined whether skin barrier impairment following epicutaneous sensitization exacerbates food allergies. METHODS: BALB/c mice were epicutaneously sensitized by repeated application of ovalbumin (OVA) to MC903-pretreated ear skin for 48 hours weekly and then intragastrically challenged with OVA...
January 10, 2018: Allergy
https://www.readbyqxmd.com/read/29319584/physiological-responses-to-overdressing-and-exercise-heat-stress-in-trained-runners
#14
Brett R Ely, Laurie A Blanchard, Jared R Steele, Michael A Francisco, Samuel N Cheuvront, Christopher T Minson
Heat acclimation is the best strategy to improve performance in a hot environment. Many athletes seeking the benefits of heat acclimation lack access to a hot environment for exercise, and thus rely on over-dressing to simulate environmental heat stress. It is currently unknown whether this approach produces the requisite thermoregulatory strain necessary for heat acclimation in trained men and women. PURPOSE: To compare physiological and cellular responses to exercise in a hot environment (HOT; 40°C, 30%rh) with minimal clothing (clo= 0...
January 9, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29315208/exogenous-24-epibrassinolide-interacts-with-light-to-regulate-anthocyanin-and-proanthocyanidin-biosynthesis-in-cabernet-sauvignon-vitis-vinifera-l
#15
Yali Zhou, Chunlong Yuan, Shicheng Ruan, Zhenwen Zhang, Jiangfei Meng, Zhumei Xi
Anthocyanins and proanthocyanidins (PAs) are crucial factors that affect the quality of grapes and the making of wine, which were stimulated by various stimuli and environment factors (sugar, hormones, light, and temperature). The aim of the study was to investigate the influence of exogenous 24-Epibrassinolide (EBR) and light on the mechanism of anthocyanins and PAs accumulation in grape berries. Grape clusters were sprayed with EBR (0.4 mg/L) under light and darkness conditions (EBR + L, EBR + D), or sprayed with deionized water under light and darkness conditions as controls (L, D), at the onset of veraison...
January 9, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29310661/temperature-elevation-in-the-human-brain-and-skin-with-thermoregulation-during-exposure-to-rf-energy
#16
Sachiko Kodera, Jose Gomez-Tames, Akimasa Hirata
BACKGROUND: Two international guidelines/standards for human protection from electromagnetic fields define the specific absorption rate (SAR) averaged over 10 g of tissue as a metric for protection against localized radio frequency field exposure due to portable devices operating below 3-10 GHz. Temperature elevation is suggested to be a dominant effect for exposure at frequencies higher than 100 kHz. No previous studies have evaluated temperature elevation in the human head for local exposure considering thermoregulation...
January 8, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29303248/multifunctional-sensor-based-on-porous-carbon-derived-from-metal-organic-frameworks-for-real-time-health-monitoring
#17
Xin-Hua Zhao, Sai-Nan Ma, Hui Long, Huiyu Yuan, Chun Yin Tang, Ping Kwong Cheng, Yuen Hong Tsang
Flexible and sensitive sensors that can detect external stimuli such as pressure, temperature, and strain are essential components for applications in health diagnosis and artificial intelligence. Multifunctional sensors with the capabilities of sensing pressure and temperature simultaneously are highly desirable for health monitoring. Here, we have successfully fabricated a flexible and simply structured bimodal sensor based on metal-organic frameworks (MOFs) derived porous carbon (PC) and polydimethylsiloxane (PDMS) composite...
January 5, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29301693/the-relation-between-melanism-and-thermal-biology-in-a-colour-polymorphic-bush-cricket-isophya-rizeensis
#18
Arda Cem Kuyucu, Mehmet Kursat Sahin, Selim Sualp Caglar
According to the thermal melanism hypothesis, darker coloured melanic individuals heat up faster and to higher temperatures than lighter coloured individuals due to lower skin reflectance. Consequently, it is assumed that darker melanic types may be advantageous compared to light coloured types in colder regions. As temperature gradually decreases with elevation and latitude the degree of melanism is expected to increase along these gradients in ectothermic species. Isophya rizeensis, a colour polymorphic bush cricket species endemic to Northeastern Turkey is an interesting case since the degree of melanism decreases with elevation, contrary to the thermal melanism hypothesis...
January 2018: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29301692/using-thermography-as-a-diagnostic-tool-for-omphalitis-on-newborn-calves
#19
C L Shecaira, C H Seino, J A Bombardelli, G A Reis, E J Fusada, M R Azedo, F J Benesi
The objective was to verify if thermography is able to detect inflammatory signs on the skin surface by comparing the umbilical region of healthy calves and calves presenting omphalitis. Twenty healthy calves (control group) had their lateral umbilical region and abdominal region examined with a thermal imaging camera in order to obtain a regional thermograph. The thermographic examination was then performed on 27 calves (Omphalitis group) presenting omphalitis diagnosed by physical examination. The maximum temperature of the lateral umbilical region in calves (aged < 30 days) was 35...
January 2018: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29301680/moderate-intensity-exercise-induced-catecholamine-release-in-the-preoptic-area-and-anterior-hypothalamus-in-rats-is-enhanced-in-a-warm-environment
#20
Xinyan Zheng, Satomi Takatsu, Ryo Ishikawa, Hiroshi Hasegawa
Thermoeffector responses and core body temperature (Tcore) homeostasis during exercise are affected by both ambient temperature and exercise intensity. We have previously reported that Tcore, heat loss responses, and catecholamine release in the preoptic area and anterior hypothalamus (PO/AH) increased during incremental treadmill running. However, no previous study has examined whether changes in the thermoregulatory responses at warm ambient temperature are related to catecholamine responses during moderate intensity exercise in rats...
January 2018: Journal of Thermal Biology
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