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https://www.readbyqxmd.com/read/29235453/potential-impact-of-thermal-effects-during-ultrasonic-neurostimulation-retrospective-numerical-estimation-of-temperature-elevation-in-seven-rodent-setups
#1
Charlotte Constans, Philippe Mateo, Mickael Tanter, Jean-Francois Aubry
In the past decade, a handful but growing number of groups have reported worldwide successful low intensity focused ultrasound induced neurostimulation trials on rodents with effects ranging from movement elicitations to reduction of anesthesia time or reduction of the duration of drug induced seizures. The mechanisms underlying ultrasonic neuromodulation are still not fully understood. Given the low intensities used in most of the studies, a mechanical effect is more likely to be responsible for the neuromodulation effect, but a clear description of the thermal and mechanical effects is necessary to optimize clinical applications...
December 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29234908/characterization-of-type-iv-antifreeze-gene-in-nile-tilapia-oreochromis-niloticus-and-influence-of-cold-and-hot-weather-on-its-expression-and-some-immune-related-genes
#2
Asmma Y Ammar, Abeer F El Nahas, Shawky Mahmoud, Mohamed E Barakat, Asmaa M Hassan
The aim of this work is to study the effect of the thermal stress of ambient temperature during winter and summer on the expression of type IV antifreeze gene (ANF IV) in different tissues of Nile tilapia (Oreochromis niloticus) as well as some immune-related genes. At first, genomic ANF IV gene was characterized from one fish; 124 amino acids were identified with 92.7% similarity with that on the gene bank. Expression of ANF IV and immune-related genes were done twice, once at the end of December (winter sample, temperature 14 °C) and the other at August (summer sample, temperature 36 °C)...
December 12, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29234416/effects-of-bedtime-periocular-warming-on-sleep-status-in-adult-female-subjects-a-pilot-study
#3
Ichiro Sakamoto, Michihito Igaki, Tomohisa Ichiba, Masahiro Suzuki, Kenichi Kuriyama, Makoto Uchiyama
Several studies have reported that suitable manipulation of human skin or body temperature can lead to improved sleep. To clarify the effect of skin warming on human sleep, 38 female subjects, who occasionally had difficulty with falling asleep, were studied. The participants underwent two experimental sessions, which were carried out in two consecutive follicular phases and randomly crossed over. The participants wore hot or sham eye masks in one 14-day session. The first half of each 14-day session was designated the baseline period (BL) without any interventions and the later half was designated the intervention period (INT), in which they wore either the hot or sham eye mask for 10 minutes at bedtime...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29234313/food-grade-pimenta-leaf-essential-oil-reduces-the-attachment-of-salmonella-enterica-heidelberg-2011-ground-turkey-outbreak-isolate-on-to-turkey-skin
#4
Divek V T Nair, Anup Kollanoor Johny
Salmonella attached to the poultry skin is a major source of carcass contamination during processing. Once attached to the poultry skin, it is difficult to detach and inactivate Salmonella by commonly used antimicrobial agents since the pathogen is entrapped deeply in the feather follicles and the crevices on the skin. Essential oils could be natural, safe, and effective alternatives to synthetic antimicrobial agents during commercial and organic processing setup. The present study evaluated the efficacy of pimenta (Pimenta officinalis Lindl...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29232935/extraction-optimization-of-flavonoids-from-hypericum-formosanum-and-matrix-metalloproteinase-1-inhibitory-activity
#5
Ho-Shin Huang, Ean-Tun Liaw
Hypericum formosanum is a valuable herb in Taiwan. In this study, response surface methodology was employed to optimize the ultrasound-assisted extraction of flavonoids from Hypericum formosanum. A central composite design with three variables (ethanol concentration, extraction time, and extraction temperature) was applied. Experimental results were fitted to the second order polynomial model and one-way analysis of variance was used to determine the goodness of fit of the model and the optimal conditions for responses...
December 11, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29232402/chagas-disease-vector-blood-meal-sources-identified-by-protein-mass-spectrometry
#6
Judith I Keller, Bryan A Ballif, Riley M St Clair, James J Vincent, M Carlota Monroy, Lori Stevens
Chagas disease is a complex vector borne parasitic disease involving blood feeding Triatominae (Hemiptera: Reduviidae) insects, also known as kissing bugs, and the vertebrates they feed on. This disease has tremendous impacts on millions of people and is a global health problem. The etiological agent of Chagas disease, Trypanosoma cruzi (Kinetoplastea: Trypanosomatida: Trypanosomatidae), is deposited on the mammalian host in the insect's feces during a blood meal, and enters the host's blood stream through mucous membranes or a break in the skin...
2017: PloS One
https://www.readbyqxmd.com/read/29231335/-review-on-skin-temperature-of-acupoints
#7
REVIEW
Ziyi Yang, Mengyuan Zhou, Xing Wang, Yunyun Zhao, Zhifeng Chen, Yi Lan, Tao Xu, Yu Zhao, Ling Zhao
We retrieve and analyze the articles on body surface temperature of acupoints in the recent 50 years. Surface temperatures have been compared between acupoints and nonacupoints, and among acupoints in different states. The impacts of interventions for acupoint temperature are explored, including acupuncture,moxibustion and cupping, etc. We summarize the features and the rules of acupoint skin temperature. It is considered that there exists distribution rule for healthy people's acupoint skin temperature. That means acupoints have higher surface temperature than nonacupoints...
January 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29231268/circadian-rhythm-in-atopic-dermatitis-pathophysiology-and-implications-for-chronotherapy
#8
Alexandra R Vaughn, Ashley K Clark, Raja K Sivamani, Vivian Y Shi
Circadian rhythm is a biological clock that controls a wide range of physiological functions throughout the body, including various skin functions. A 24-h diurnal cycle, governed by an endogenous clock in the brain, largely controls cutaneous diurnal rhythm, which external factors, including temperature, humidity, diet, and stress, also modulate locally. Circadian rhythm influences cutaneous blood flow and properties of skin barrier function, such as transepidermal water loss and capacitance, and has important implications in atopic dermatitis (AD)...
December 12, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/29230360/skin-temperature-and-reproductive-condition-in-wild-female-chimpanzees
#9
Guillaume Dezecache, Claudia Wilke, Nathalie Richi, Christof Neumann, Klaus Zuberbühler
Infrared thermal imaging has emerged as a valuable tool in veterinary medicine, in particular for evaluating reproductive processes. Here, we explored differences in skin temperature of twenty female chimpanzees in Budongo Forest, Uganda, four of which were pregnant during data collection. Based on previous literature in other mammals, we predicted increased skin temperature of maximally swollen reproductive organs of non-pregnant females when approaching peak fertility. For pregnant females, we made the same prediction because it has been argued that female chimpanzees have evolved mechanisms to conceal pregnancy, including swellings of the reproductive organs, conspicuous copulation calling, and solicitation of male mating behaviour, to decrease the infanticidal tendencies of resident males by confusing paternity...
2017: PeerJ
https://www.readbyqxmd.com/read/29230255/control-of-cell-proliferation-by-a-porous-chitosan-scaffold-with-multiple-releasing-capabilities
#10
Shu-Jyun Cai, Ching-Wen Li, Daphne Weihs, Gou-Jen Wang
The aim of this study was to develop a porous chitosan scaffold with long-acting drug release as an artificial dressing to promote skin wound healing. The dressing was fabricated by pre-freezing at different temperatures (-20 and -80 °C) for different periods of time, followed by freeze-drying to form porous chitosan scaffolds with different pore sizes. The chitosan scaffolds were then used to investigate the effect of the controlled release of fibroblast growth factor-basic (bFGF) and transforming growth factor-β1 (TGFβ1) on mouse fibroblast cells (L929) and bovine carotid endothelial cells (BEC)...
2017: Science and Technology of Advanced Materials
https://www.readbyqxmd.com/read/29228775/effects-of-ceramide-and-dihydroceramide-stereochemistry-at-c-3-on-the-phase-behavior-and-permeability-of-skin-lipid-membranes
#11
Andrej Kovacik, Petra Pullmannová, Jaroslav Maixner, Katerina Vavrova
Ceramides (Cer) are key components of the skin permeability barrier. Sphingosine-based CerNS and dihydrosphingosine-based CerNdS (dihydroCer) have two chiral centers; however, the importance of the correct stereochemistry in the skin barrier Cer is unknown. We investigated the role of the configuration at C-3 of CerNS and CerNdS in the organization and permeability of model skin lipid membranes. Unnatural L-threo-CerNS and L-threo-CerNdS with 24-C acyl chains were synthesized and, along with their natural D-erythro isomers, incorporated into membranes composed of major stratum corneum lipids (Cer, free fatty acids, cholesterol and cholesteryl sulfate)...
December 11, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29227500/enhanced-topical-delivery-of-dexamethasone-by-%C3%AE-cyclodextrin-decorated-thermoresponsive-nanogels
#12
M Giulbudagian, S Hönzke, J Bergueiro, D Işık, F Schumacher, S Saeidpour, S B Lohan, M C Meinke, C Teutloff, M Schäfer-Korting, G Yealland, B Kleuser, S Hedtrich, M Calderón
Highly hydrophilic, responsive nanogels are attractive as potential systems for the topical delivery of bioactives encapsulated in their three-dimensional polymeric scaffold. Yet, these drug carrier systems suffer from drawbacks for efficient delivery of hydrophobic drugs. Addressing this, β-cyclodextrin (βCD) could be successfully introduced into the drug carrier systems by exploiting its unique affinity toward dexamethasone (DXM) as well as its role as topical penetration enhancer. The properties of βCD could be combined with those of thermoresponsive nanogels (tNGs) based on dendritic polyglycerol (dPG) as a crosslinker and linear thermoresponsive polyglycerol (tPG) inducing responsiveness to temperature changes...
December 11, 2017: Nanoscale
https://www.readbyqxmd.com/read/29226072/a-thermal-gradient-modulates-the-oxidative-metabolism-and-growth-of-human-keratinocytes
#13
Marta Viano, Daniela Alotto, Alessia Aillon, Carlotta Castagnoli, Francesca Silvagno
During their spatial and differentiative progression, keratinocytes face a thermal gradient, from 37 °C in the proliferating basal layer to 32 °C found in skin surface. In our study, we hypothesized that this difference in temperature must be balanced by increasing the heat produced during respiratory activity. We demonstrated that at 33 °C human primary keratinocytes and HaCaT cells raised mitochondrial energy metabolism, but not glycolytic activity. At 33 °C, the increased mitochondrial ATP synthesis was associated with a strong induction of the modulator of the respiratory chain estrogen receptor β, whereas uncoupling protein 1 expression was not changed...
December 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/29225897/-bottom-hung-window-trauma-in-cats-neurological-evaluation-and-outcome-in-71-cats-with-bilateral-hindlimb-injury
#14
Gabriele M Gradner, Lina Dogman-Rauberger, Gilles Dupré
Objectives: Influence of neurological status on the mortality rate of paraparetic/paralysed cats presenting after entrapment in a bottom-hung window was evaluated. It was hypothesised that (1) loss of deep pain sensation at admission would not be a negative prognostic factor for regaining motor function and that (2) mortality rate would be influenced by the severity of neurological grade upon admission. Methods: Clinical and pathological data of affected cats that presented at our institution between 2001 and 2012 for this specific trauma were collected retrospectively: breed, age, sex, last contact with owner (<3 hours and >3 hours), whether the cat was suffering from monoparesis or paraparesis/paraplegia, duration of hospitalisation, rectal temperature, surface temperature of the skin of the hindlimbs, femoral pulse and tone of the pelvic musculature...
2017: Veterinary Record Open
https://www.readbyqxmd.com/read/29225563/music-evoked-emotions-current-studies
#15
REVIEW
Hans-Eckhardt Schaefer
The present study is focused on a review of the current state of investigating music-evoked emotions experimentally, theoretically and with respect to their therapeutic potentials. After a concise historical overview and a schematic of the hearing mechanisms, experimental studies on music listeners and on music performers are discussed, starting with the presentation of characteristic musical stimuli and the basic features of tomographic imaging of emotional activation in the brain, such as functional magnetic resonance imaging (fMRI) and positron emission tomography (PET), which offer high spatial resolution in the millimeter range...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29225313/ingestion-of-coffee-polyphenols-improves-a-scaly-skin-surface-and-the-recovery-rate-of-skin-temperature-after-cold-stress-a-randomized-controlled-trial
#16
Sachie Ueda, Masanori Tanahashi, Yuko Higaki, Kayoko Iwata, Yoshinori Sugiyama
Coffee polyphenols (CPPs) derived from coffee beans have beneficial effects on blood pressure and vascular endothelial function. In addition, CPPs suppress ultraviolet light induced erythema. However, the effects of CPPs on dry skin and cutaneous vascular function have not been clarified. We investigated the effects of CPPs on dry skin and the recovery rate (RR) of skin temperature after a cold-stress test as a measure of vascular function in subjects with visible scaliness in a double-blind, placebo-controlled, randomized study...
2017: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/29224500/transition-phase-clothing-strategies-and-their-effect-on-body-temperature-and-100-m-swimming-performance
#17
Andy Galbraith, Aimee Willmott
OBJECTIVE: Effective warm-ups are attributed to several temperature-related mechanisms. Strategies during the transition phase, preceding swimming competition, have been shown to prolong temperature-related warm-up effects. The purpose of this study was to evaluate the effects of two different clothing strategies during the transition phase, on subsequent 100-m maximal swimming performance. METHODS: Nine competitive swimmers (3 female, 21 ± 3 yrs; 6 male 20 ± 2 yrs, mean performance standard 702 FINA Points, mean 100-m seasons best time 61...
December 10, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29223712/correlated-colour-temperature-of-morning-light-influences-alertness-and-body-temperature
#18
Marije Te Kulve, Luc Schlangen, Lisje Schellen, Jan L Souman, Wouter van Marken Lichtenbelt
Though several studies have reported human alertness to be affected by the intensity and spectral composition of ambient light, the mechanism behind this effect is still largely unclear, especially for daytime exposure. Alerting effects of nocturnal light exposure are correlated with melatonin suppression, but melatonin levels are generally low during the day. The aim of this study was to explore the alerting effect of light in the morning for different correlated colour temperature (CCT) values, as well as its interaction with ambient temperature...
December 6, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29223413/predictors-of-pressure-ulcer-risk-in-adult-intensive-care-patients-a-retrospective-case-control-study
#19
Ana Beatriz de Almeida Medeiros, Maria Isabel da Conceição Dias Fernandes, Jéssica Dantas de Sá Tinôco, Marcelly Santos Cossi, Marcos Venicios de Oliveira Lopes, Ana Luisa Brandão de Carvalho Lira
OBJECTIVES: To evaluate the predictive power of risk factors for pressure ulcers in adult intensive care patients. METHOD: A retrospective case-control study was performed utilising a heterogeneous sample group allocated into a case group with pressure ulcers (n=90) and a control group without pressure ulcers (n=90). The analysis explored the predictive power of risk factors for pressure ulcers using a hierarchical logistic regression model. RESULTS: The risk factors that predicted pressure ulcers were friction (OR=5...
December 6, 2017: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
https://www.readbyqxmd.com/read/29223208/implementing-evidence-based-neonatal-skin-care-with-parent-performed-delayed-immersion-baths
#20
Jeanette Brogan, Gloria Rapkin
There has been a recent trend toward delaying newborn baths because of mounting evidence that delayed bathing promotes breastfeeding, decreases hypothermia, and allows for more parental involvement with newborn care. A multidisciplinary team from a maternal-new-born unit at a military medical center designed and implemented an evidence-based practice change from infant sponge baths shortly after birth to delayed immersion baths. An analysis of newborn temperature data showed that newborns who received delayed immersion baths were less likely to be hypothermic than those who received a sponge bath shortly after birth...
December 2017: Nursing for Women's Health
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