Calorimetric studies on the energy metabolism of an infaunal bivalve, Abra tenuis, under normoxia, hypoxia and anoxia

1993 ◽  
Vol 116 (1) ◽  
pp. 73-79 ◽  
Author(s):  
W. X. Wang ◽  
J. Widdows
Keyword(s):  
Energy Metabolism ◽  
Infaunal Bivalve ◽  
Calorimetric Studies

Energy metabolism in the starved new-born lamb

1962 ◽  
Vol 13 (1) ◽  
pp. 144 ◽  
Author(s):  
G Alexander
Keyword(s):  
Energy Metabolism ◽  
Total Energy ◽  
Glycogen Content ◽  
Nitrogen Excretion ◽  
Energy Reserves ◽  
Protein Utilization ◽  
Carbohydrate Reserves ◽  
New Born ◽  
Higher Temperature ◽  
Calorimetric Studies

New-born lambs were treated in one of three ways: (a) killed within 2 hr of birth; (b) starved at 23°C in 'still air'; (c) starved at approximately 9°C in moving air. Starved lambs became hypothermic and hypoglycaemic and lapsed into coma or convulsions shortly before death, which occurred between 16 hr and 5 days. Survival was generally longer when starvation was at the higher temperature. The size of the energy reserves was estimated from the fat and glycogen content of lambs killed at birth or near death from starvation; protein utilization during starvation was estimated from nitrogen excretion in the urine and the increase in urea in the blood. Fat and carbohydrate reserves appeared to be exhausted near death from starvation. Fat was the largest source of energy, and there was twice as much fat available at birth in lambs from well-fed ewes as in lambs from poorly fed ewes. Carbohydrate reserves in the liver and muscle appeared unaffected by pre-natal nutrition. Protein utilization increased progressively throughout starvation at a rate independent of pre-natal nutrition, and the total amount of protein utilized depended on the period of survival. Total energy reserves in lambs from well-fed and poorly fed ewes were approximately 1000 and 400 kcal respectively estimated as above or from calorimetric studies during starvation.

Mitochondrial matrix calcium ions regulate energy production in myocardium: A cytochemical study

1990 ◽  
Vol 48 (2) ◽  
pp. 166-167
Author(s):  
W.A. Jacob ◽  
R. Hertsens ◽  
A. Van Bogaert ◽  
M. De Smet
Keyword(s):  
Energy Metabolism ◽  
Calcium Ions ◽  
Energy Production ◽  
Regulation Of Respiration ◽  
Free Calcium ◽  
Mitochondrial Matrix ◽  
Cytochemical Study ◽  
Nmr Techniques

In the past most studies of the control of energy metabolism focus on the role of the phosphorylation potential ATP/ADP.Pi on the regulation of respiration. Studies using NMR techniques have demonstrated that the concentrations of these compounds for oxidation phosphorylation do not change appreciably throughout the cardiac cycle and during increases in cardiac work. Hence regulation of energy production by calcium ions, present in the mitochondrial matrix, has been the object of a number of recent studies.Three exclusively intramitochondnal dehydrogenases are key enzymes for the regulation of oxidative metabolism. They are activated by calcium ions in the low micromolar range. Since, however, earlier estimates of the intramitochondnal calcium, based on equilibrium thermodynamic considerations, were in the millimolar range, a physiological correlation was not evident. The introduction of calcium-sensitive probes fura-2 and indo-1 made monitoring of free calcium during changing energy metabolism possible. These studies were performed on isolated mitochondria and extrapolation to the in vivo situation is more or less speculative.

Soy isoflavone Genistein affects energy metabolism in a steatotic liver model

2012 ◽  
Vol 50 (01) ◽  
Author(s):  
S Lünse ◽  
A Krüger ◽  
M Glanemann ◽  
G Damm
Keyword(s):  
Energy Metabolism ◽  
Soy Isoflavone ◽  
Steatotic Liver ◽  
Liver Model

Regulation of energy metabolism in hepatocytes with induced steatosis

2015 ◽  
Vol 53 (01) ◽  
Author(s):  
K Schönefeld ◽  
M Matz-Soja ◽  
J Böttger ◽  
P Seibel ◽  
R Gebhardt
Keyword(s):  
Energy Metabolism

Dysregulation of energy metabolism in obesity and its implications for cancer

2016 ◽  
Vol 02 (03) ◽  
pp. 133-142
Author(s):  
Andrew Hoffman ◽  
Lauren Battaglia ◽  
Michael DeStefano ◽  
Emine Abali
Keyword(s):  
Energy Metabolism
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