journal
MENU ▼
Read by QxMD icon Read
search

Journal of Thermal Biology

journal
https://www.readbyqxmd.com/read/28343583/indirect-hand-and-forearm-vasomotion-regional-variations-in-cutaneous-thermosensitivity-during-normothermia-and-mild-hyperthermia
#1
Catriona A Burdon, Kyoko Tagami, Joonhee Park, Joanne N Caldwell, Nigel A S Taylor
In this experiment, hand and forearm vasomotor activity was investigated during localised, but stable heating and cooling of the face, hand and thigh, under open-loop (clamped) conditions. It was hypothesised that facial stimulation would provoke the most potent vascular changes. Nine individuals participated in two normothermic trials (mean body temperature clamp: 36.6°C; water-perfused suit and climate chamber) and two mildly hyperthermic trials (37.9°C). Localised heating (+5°C) and cooling (-5°C) stimuli were applied to equal surface areas of the face, hand and thigh (perfusion patches: 15min), while contralateral forearm or hand blood flows (venous-occlusion plethysmography) were measured (separate trials)...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343582/the-effect-of-local-skin-cooling-before-a-sustained-submaximal-isometric-contraction-on-fatigue-and-isometric-quadriceps-femoris-performance-a-randomized-controlled-trial
#2
Erich Hohenauer, Corrado Cescon, Tom Deliens, Peter Clarys, Ron Clijsen
The central- and peripheral mechanisms by which heat strain limits physical performance are not fully elucidated. Nevertheless, pre-cooling is often used in an attempt to improve subsequent performance. This study compared the effects of pre-cooling vs. a pre-thermoneutral application on central- and peripheral fatigue during 60% of isometric maximum voluntary contraction (MVC) of the right quadriceps femoris muscle. Furthermore, the effects between a pre-cooling and a pre-thermoneutral application on isometric MVC of the right quadriceps femoris muscle and subjective ratings of perceived exertion (RPE) were investigated...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343581/proteomic-analysis-of-physiological-function-response-to-hot-summer-in-liver-from-lactating-dairy-cows
#3
Qiangjun Wang, Xiaowei Zhao, Zijun Zhang, Huiling Zhao, Dongwei Huang, Guanglong Cheng, Yongxin Yang
Lactation performance of dairy cattle is susceptible to heat stress. The liver is one of the most crucial organs affected by high temperature in dairy cows. However, the physiological adaption by the liver to hot summer conditions has not been well elucidated in lactating dairy cows. In the present study, proteomic analysis of the liver in dairy cows in spring and hot summer was performed using a label-free method. In total, 127 differentially expressed proteins were identified; most of the upregulated proteins were involved in protein metabolic processes and responses to stimuli, whereas most of the downregulated proteins were related to oxidation-reduction...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343580/behavioral-thermal-tolerances-of-free-ranging-rattlesnakes-crotalus-oreganus-during-the-summer-foraging-season
#4
Breanna J Putman, Rulon W Clark
Increasing temperature due to climate change is one of the greatest challenges for wildlife worldwide. Behavioral data on free-ranging individuals is necessary to determine at what temperatures animals modify activity as this would determine their capacity to continue to move, forage, and mate under altered thermal regimes. In particular, high temperatures could limit available surface activity time and time spent on fitness-related activities. Conversely, performance, such as feeding rate, can increase with temperature potentially having positive fitness effects...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343579/combined-effects-of-temperature-and-interspecific-competition-on-the-mortality-of-the-invasive-garden-ant-lasius-neglectus-a-laboratory-study
#5
Filippo Frizzi, Viola Bartalesi, Giacomo Santini
The invasive garden ant, Lasius neglectus, is a dominant species due to its capacity to form large supercolonies. This species was assumed to possess a wide thermal niche since it is able to adapt to cold climates, which is a factor that boosted its rapid expansion from south to many central-northern European Countries. However, the effect of variations in environmental temperatures on its competitive ability against other species has still not been investigated. In this paper, we analyzed the change in survival ability of Lasius neglectus during encounters with two Mediterranean dominant ants (Crematogaster scutellaris and Tapinoma nigerrimum) at four different temperatures (15, 20, 25 and 30°C)...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343578/untranslated-regions-utrs-orchestrate-translation-reprogramming-in-cellular-stress-responses
#6
REVIEW
Basavaraj Sajjanar, Rajib Deb, Susheel Kumar Raina, Sachin Pawar, Manoj P Brahmane, Avinash V Nirmale, Nitin P Kurade, Gundallahalli B Manjunathareddy, Santanu Kumar Bal, Narendra Pratap Singh
Stress is the result of an organism's interaction with environmental challenges. Regulations of gene expression including translation modulations are critical for adaptation and survival under stress. Untranslated regions (UTRs) of the transcripts play significant roles in translation regulation and continue to raise many intriguing questions in our understanding of cellular stress physiology. IRES (Internal ribosome entry site) and uORF (upstream open reading frame) mediated alternative translation initiations are emerging as unique mechanisms...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343577/effects-of-pregnancy-on-body-temperature-and-locomotor-performance-of-velvet-geckos
#7
Buddhi Dayananda, Nora Ibargüengoytía, Martin J Whiting, Jonathan K Webb
Pregnancy is a challenging period for egg laying squamates. Carrying eggs can encumber females and decrease their locomotor performance, potentially increasing their risk of predation. Pregnant females can potentially reduce this handicap by selecting higher temperatures to increase their sprint speed and ability to escape from predators, or to speed up embryonic development and reduce the period during which they are burdened with eggs ('selfish mother' hypothesis). Alternatively, females might select more stable body temperatures during pregnancy to enhance offspring fitness ('maternal manipulation hypothesis'), even if the maintenance of such temperatures compromises a female's locomotor performance...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343576/the-metabolic-response-in-fish-to-mildly-elevated-water-temperature-relates-to-species-dependent-muscular-concentrations-of-imidazole-compounds-and-free-amino-acids
#8
Fikremariam Geda, Annelies M Declercq, Sofie C Remø, Rune Waagbø, Marta Lourenço, Geert P J Janssens
Fish species show distinct differences in their muscular concentrations of imidazoles and free amino acids (FAA). This study was conducted to investigate whether metabolic response to mildly elevated water temperature (MEWT) relates to species-dependent muscular concentrations of imidazoles and FAA. Thirteen carp and 17 Nile tilapia, housed one per aquarium, were randomly assigned to either acclimation (25°C) or MEWT (30°C) for 14 days. Main muscular concentrations were histidine (HIS; P<0.001) in carp versus N-α-acetylhistidine (NAH; P<0...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343575/expression-analysis-of-toll-like-receptors-and-interleukins-in-tharparkar-cattle-during-acclimation-to-heat-stress-exposure
#9
Jaya Bharati, S S Dangi, S R Mishra, V S Chouhan, V Verma, O Shankar, M K Bharti, A Paul, Dilip K Mahato, G Rajesh, G Singh, V P Maurya, S Bag, Puneet Kumar, M Sarkar
Six male Tharparkar cattle of 2-3 years old were selected for the study. After 15 days acclimation at thermo neutral zone (TNZ) in psychrometric chamber, animals were exposed at 42°C for 6h up to 23 days followed by 12 days of recovery period. Blood samples were collected during control period at TNZ (day 1, 5 and 12), after heat stress exposure (day 1-10, Short Term Heat Stress Acclimation - STHSA; day 15-23, Long Term Heat Stress Acclimation - LTHSA) and recovery period (day 7 and 12) and peripheral blood mononuclear cells (PBMCs) were isolated for RNA and protein extraction...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343574/individualising-the-exposure-of-110%C3%A2-c-whole-body-cryotherapy-the-effects-of-sex-and-body-composition
#10
Saul Cuttell, Lucy Hammond, Dominic Langdon, Joseph Costello
The purpose of this study was to investigate the effects of whole body cryotherapy (WBC) on a range of thermoregulatory measures. We also sought to examine the influence of sex and body composition. A convenience sample of 18 healthy participants (10 males and 8 females) (27±6yr) volunteered for this study. Temperature (core, tympanic, skin and mean body), heart rate, blood pressure, and thermal comfort and sensation were recorded pre- and post- (immediately and every 5min until 35min post) exposure to a single bout of WBC (30s at -60°C, 150s at 110°C)...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343573/metabolic-and-cellular-stress-responses-of-catfish-horabagrus-brachysoma-g%C3%A3-nther-acclimated-to-increasing-temperatures
#11
Rishikesh S Dalvi, Tilak Das, Dipesh Debnath, Sona Yengkokpam, Kartik Baruah, Lalchand R Tiwari, Asim K Pal
We investigated the metabolic and cellular stress responses in an endemic catfish Horabagrus brachysoma acclimated to ambient (26°C), 31, 33 and 36°C for 30 days. After acclimation, fish were sampled to investigate changes in the levels of blood glucose, tissue glycogen and ascorbic acid, activities of enzymes involved in glycolysis (LDH), citric acid cycle (MDH), gluconeogenesis (FBPase and G6Pase), pentose phosphate pathway (G6PDH), protein metabolism (AST and ALT), phosphate metabolism (ACP and ALP) and energy metabolism (ATPase), and HSP70 levels in various tissues...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343572/effect-of-the-timing-of-ice-slurry-ingestion-for-precooling-on-endurance-exercise-capacity-in-a-warm-environment
#12
Keisuke Takeshima, Sumire Onitsuka, Zheng Xinyan, Hiroshi Hasegawa
It has been demonstrated that precooling with ice slurry ingestion enhances endurance exercise capacity in the heat. However, no studies have yet evaluated the optimal timing of ice slurry ingestion for precooling. This study aimed to investigate the effects of varying the timing of ice slurry ingestion for precooling on endurance exercise capacity in a warm environment. Ten active male participants completed 3 experimental cycling trials to exhaustion at 55% peak power output (PPO) after 15min of warm-up at 30% PPO at 30°C and 80% relative humidity...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343571/a-method-to-transform-a-variable-thermal-regime-to-a-physiologically-equivalent-effective-temperature
#13
Charles Mitz, Christopher Thome, Jeroen Thompson, Richard G Manzon, Joanna Y Wilson, Douglas R Boreham
We present a method to characterize variable thermal regimes in terms of an equivalent or effective temperature. Our method is based on a first order exponential transformation of a time series of temperatures to yield an exponentially-weighted mean temperature characteristic of the regime and independent of any particular species or end point. The resulting effective temperature or exponential mean, Te¯, offers an improved method for summarizing mean temperature where biological response scales exponentially to temperature...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343570/supplemental-intermittent-day-heat-training-and-the-lactate-threshold
#14
Stuart Gollan, Samuel Chalmers, Stephen Alderton, Kevin Norton
Heat acclimation over consecutive days has been shown to improve aerobic-based performance. Recently, it has been suggested that heat training can improve performance in a temperate environment. However, due to the multifactorial training demands of athletes, consecutive-day heat training may not be suitable. The current study aimed to investigate the effect of brief (8×30min) intermittent (every 3-4 days) supplemental heat training on the second lactate threshold point (LT2) in temperate and hot conditions...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343569/a-3d-thermal-model-to-analyze-the-temperature-changes-of-digits-during-cold-stress-and-predict-the-danger-of-frostbite-in-human-fingers
#15
Amir Fallahi, Mohammad Reza Salimpour, Ebrahim Shirani
The existing computational models of frostbite injury are limited to one and two dimensional schemes. In this study, a coupled thermo-fluid model is applied to simulate a finger exposed to cold weather. The spatial variability of finger-tip temperature is compared to experimental ones to validate the model. A semi-realistic 3D model for tissue and blood vessels is used to analyze the transient heat transfer through the finger. The effect of heat conduction, metabolic heat generation, heat transport by blood perfusion, heat exchange between tissues and large vessels are considered in energy balance equations...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343568/thermogenic-and-psychogenic-recruitment-of-human-eccrine-sweat-glands-variations-between-glabrous-and-non-glabrous-skin-surfaces
#16
Christiano A Machado-Moreira, Nigel A S Taylor
Human eccrine sweat-gland recruitment and secretion rates were investigated from the glabrous (volar) and non-glabrous hand surfaces during psychogenic (mental arithmetic) and thermogenic stimuli (mild hyperthermia). It was hypothesised that these treatments would activate glands from both skin surfaces, with the non-thermal stimulus increasing secretion rates primarily by recruiting more sweat glands. Ten healthy men participated in two seated, resting trials in temperate conditions (25-26°C). Trials commenced under normothermic conditions during which the first psychogenic stress was applied...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343567/validation-of-a-new-whole-body-cryotherapy-chamber-based-on-forced-convection
#17
Romain Bouzigon, Ahlem Arfaoui, Frédéric Grappe, Gilles Ravier, Benoit Jarlot, Benoit Dugue
Whole-body cryotherapy (WBC) and partial-body cryotherapy (PBC) are two methods of cold exposure (from -110 to -195°C according to the manufacturers). However, temperature measurement in the cold chamber during a PBC exposure revealed temperatures ranging from -25 to -50°C next to the skin of the subjects (using isolating layer placed between the sensor and the skin). This discrepancy is due to the human body heat transfer. Moreover, on the surface of the body, an air layer called the boundary layer is created during the exposure and limits heat transfer from the body to the cabin air...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343566/living-in-sympatry-the-effect-of-habitat-partitioning-on-the-thermoregulation-of-three-mediterranean-lizards
#18
Kostas Sagonas, Grigoris Kapsalas, Efstratios Valakos, Panayiotis Pafilis
The ability for effective, accurate and precise thermoregulation is of paramount importance for ectotherms. Sympatric lizards often partition their niche and select different microhabitats. These microhabitats, however, usually differ in their thermal conditions and lizards have to adapt their thermoregulation behavior accordingly. Here, we evaluated the impact of habitat partitioning on the thermal biology of three syntopic, congeneric lacertids (Podarcis peloponnesiacus, P. tauricus and P. muralis) from central Peloponnese, Greece...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343565/thermal-tolerance-and-preferred-temperature-range-of-juvenile-meagre-acclimated-to-four-temperatures
#19
Mehmet Kır, Murat Can Sunar, Barış Can Altındağ
The present study reports the temperature tolerance, estimated using dynamic and static methodologies, and preferred temperature range, based on oxygen consumption rate (OCR), of juvenile meagre (Argyrosomus regius) (Asso, 1801) (3.4±0.9g) after 30 days of acclimation at 18, 22, 26 and 30°C. Meagre has dynamic and static thermal tolerance zones of 551°C(2) and 460°C(2), respectively and is a low resistance fish species, with a resistance zone area of 87°C(2). The OCR of juvenile meagre at the above acclimation temperatures was 370, 410, 618 and 642mgh(-1)kg(-)(1), respectively, and is significantly different (P<0...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343564/embryos-of-non-native-anoles-are-robust-to-urban-thermal-environments
#20
Sarin Tiatragul, Audeline Kurniawan, Jason J Kolbe, Daniel A Warner
The transformation of natural habitats into urban landscapes dramatically alters thermal environments, which in turn, can impact local biota. Ectothermic organisms that are oviparous are particularly sensitive to these altered environments because their embryos cannot behaviorally thermoregulate and the surrounding environment determines the temperature experienced during development. We studied the effects of urban and forested thermal environments on embryo development and hatchling phenotypes in two non-native lizards (Anolis sagrei and A...
April 2017: Journal of Thermal Biology
journal
journal
26579
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"