... Foundation http://dx.doi.org/10.13039/100006038 NASA http://dx.doi.org/10.13039/100000104 NNX11AO28G Body temperature Torpor Metabolism Hypothermia Avian Mammals Editor's Choice: Three hummingbird species are capable of a temperature spectrum from normothermy to torpor...

... channels TRPV1 and TRPM8, and indicate that modest amino acid sequence differences of these proteins in thirteen-lined ground squirrels greatly reduce their heat and cold sensitivity. Hypothermia is used in various medical procedures, but the ability to study the effects of hypothermia on living...

... and wrote the manuscript. COMPETING INTERESTS No competing interests declared. 15 8 2012 19 2 2013 © 2013. Published by The Company of Biologists Ltd 2013 hibernator cardiac function hypotension hypothermia capillarity Thermal stress, associated...

...Shun Maekawa; Hitomi Iemura; Yuko Kuramochi; Nami Nogawa-Kosaka; Hironori Nishikawa; Takehito Okui; Youichi Aizawa; Takashi Kato SUMMARY Diminished erythrocyte count and erythropoiesis have been reported during hypothermia in some ectothermic animals. In this study, the African clawed frog, Xenopus...

...David Hauton; Shaun May; Rasna Sabharwal; Durmus Deveci; Stuart Egginton SUMMARY The consequences of acute hypothermia include impaired cardiovascular performance, ultimately leading to circulatory collapse. We examined the extent to which this results from intrinsic limitations to cardiac...

... torpor hypothermia lung remodeling Mesocricetus auratus Hibernation, the state of metabolic depression and inactivity in animals during winter, is a phenomenon that is observed in many mammals, including primates ( Dausmann et al., 2004 ). Hibernation of small rodents is characterized...

... showed that hypothermia of this magnitude can lead to a reduction of some 30% in energy expenditure compared with birds remaining normothermic. Our data suggest that by reducing the T b – T a gradient, blackcaps accelerate their rate of fuel accumulation at a stopover. When body energy reserves are low...

... but is under endogenous control, preparing the organism well in advance of seasonal energetic demands. * Author for correspondence (e-mail: [email protected] ) 8 9 2006 © The Company of Biologists Limited 2006 2006 hypometabolism hypothermia metabolic rate winter...

... understanding of how neurons adapt to hypoxia is likely to help guide efforts to find new treatments for brain hypoxia and ischemia. © The Company of Biologists Limited 2004 2004 brain ischemia hypoxia neuron adaptation hypothermia Despite years of research, the treatment and prevention...

... death. During arousal thermogenesis, attenuation of SAPK activation due to hypothermia,immune modulation and enhanced antioxidant defenses, such as increased brain ascorbate concentrations, may tip downstream consequences towards a pro-regenerative and/or synaptogenic outcome. JNK, c-Jun N -terminal...

...-mail: [email protected] ) 22 1 2004 © The Company of Biologists Limited 2004 2004 chicken embryo Gallus domesticus thermoregulation hypothermia incubation development heterokairy The developing chicken embryo is a poikilotherm, and consequently any decrease in ambient...

...R. G. Boutilier SUMMARY Most animals experience some degree of hypoxia and hypothermia during the course of their natural life history either as a consequence of ambient ‘exposure’ per se or through metabolic, respiratory and/or circulatory insufficiency. A prevailing experimental approach has been...

... the rate of pre-migratory fattening, the energy saved as a result of this hypothermia reduces the rate at which fat is used and thus enables its more rapid replacement following and, possibly during, migration. The energy saved may also be used for the replacement of non-fat tissues such as the locomotory...

...Erica L. Wagner; David A. Scholnick; Todd T. Gleeson ABSTRACT We conducted this study to determine whether two of the physiological changes associated with non-sustainable exercise, elevated blood lactate levels and decreased arterial pH, contribute to the behavioral hypothermia exhibited...

... of Biologists 1993 heart coronary flow hibernation hypothermia rat ground squirrel left ventricular systolic pressure Spermophilus lateralis The cardiovascular system of hibernating mammals is adapted to function at relatively low temperatures (body temperature, T b 1–7°C). Upon...

...Chris Jensen; Claus Bech ABSTRACT Ventilatory control of the composition of the gases in the air sacs was studied during entry into fasting-induced, shallow, nocturnal hypothermia in the domestic pigeon (Columba livia) . Respiratory frequency (f) , tidal volume (VT) and oxygen uptake were recorded...