Results 241 to 250 of about 39,448 (266)

The evolution of thermogenesis in mammals

Science
Comparative genomics elucidates the steps enabling heat production in fat ...
Katharine R, Grabek, Ryan J, Sprenger
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Central control of thermogenesis

Neuropharmacology, 2012
In mammals and birds, conservation of body heat at around 37 °C is vital to life. Thermogenesis is the production of this heat which can be obligatory, as in basal metabolic rate, or it can be facultative such as the response to cold. A complex regulatory system has evolved which senses environmental or core temperature and integrates this information ...
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FEVER AND BIOCHEMICAL THERMOGENESIS

Pediatrics, 1971
Serum free fatty acid versus glycerol ratios were decreased in human newborn infants during pyrexia or cold injury, but remained practically unchanged in older infants and children. Decreased ratios in the newborn resulted exclusively from an increase in serum glycerol.
N, Matsaniotis, V, Pastelis, A, Agathopoulos, N, Constantsas   +3 more
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Fructose and dietary thermogenesis

The American Journal of Clinical Nutrition, 1993
Ingestion of nutrients increases energy expenditure above basal metabolic rate. Thermogenesis of carbohydrate comprises two distinct components: an obligatory component, which corresponds to the energy cost of carbohydrate absorption, processing, and storage; and a facultative component, which appears to be related with a carbohydrate-induced ...
L, Tappy, E, Jéquier
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Postprandial Thermogenesis in Obesity

Clinical Science, 1981
1. The thermogenic response and changes in plasma substrates and hormones were tested after a liquid meal in lean, obese and formerly obese women. 2. Subjects with a family history of obesity tested either while obese or after slimming to a normal weight had a thermogenic response, which was only half that of the lean group.
P S, Shetty, R T, Jung, W P, James, M A, Barrand, B A, Callingham   +4 more
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Adaptive thermogenesis in hummingbirds

Journal of Experimental Biology, 2002
SUMMARY The occurrence of non-shivering thermogenesis in birds has long been a controversial issue. Although birds are endothermic vertebrates, sharing with mammals (placental mammals and marsupials) a common ancestor, they do not possess brown adipose tissue or a similar type of tissue, unlike their mammalian counterparts.
José Eduardo P W, Bicudo, Antonio C, Bianco, Cláudia R, Vianna   +2 more
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Reduced thermogenesis in obesity

Nature, 1979
IT is often claimed that there are obese patients who find it difficult to maintain a normal body weight because they have such low energy requirements that even normal intakes of energy result in weight gain and obesity. Studies of both children1 and adults2 show that there can be a twofold difference in energy intake between individuals despite ...
R T, Jung, P S, Shetty, W P, James, M A, Barrand, B A, Callingham   +4 more
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Nutrient induced thermogenesis

Baillière's Clinical Endocrinology and Metabolism, 1997
Although first described more than two centuries ago, the increase in energy expenditure associated with feeding (nutrient induced thermogenesis (NIT) is still incompletely understood. Although the magnitude of the response and the effect of varying the composition of the diet, route and rate of feeding is still the subject of controversy, the ...
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Growth, thermogenesis, and hyperphagia

The American Journal of Clinical Nutrition, 1990
Resting metabolic rate is demonstrated to be a function of fat-free mass and a growth variable related to food-energy-input imbalance rate. By use of obligatory energy expenditure terms, the two-reservoir energy model applied to hyperphagia shows that growth of the fat-free mass is rapid whereas that of the fat store is slow and that the growth of both
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Studies in Microbial Thermogenesis

Science, 1927
An apparatus for the study of the "spontaneous" heat production in stored organic materials has been described. Experiments with commercial cornmeal and cracked yellow field corn have shown that temperatures above 60°C. can readily be produced under suitable conditions of moisture content, oxygen supply and insulation, and that marked heating does not ...
L H, James, L H, James
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