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13 results on '"de Haan, E. J."'

3. IMP production and energy metabolism during exercise in rats in relation to age

Author

Westra, H G, De Haan, A, van Doorn, J E, and de Haan, E J

Abstract

IMP production in and force exerted by rat quadriceps muscle in situ during various types of exercise were examined in relation to age. During continuous isometric exercise with constant stimulation time, the amount of IMP was linearly and inversely related to the age of the animals; a higher IMP concentration was found in intermittent isometric and dynamic exercise. No relationship was found between the total AMP deaminase activity and age. Exercise influenced neither the total activity nor the activity in the soluble fraction. From the results it is concluded that: the IMP concentration is linearly related to the free intracellular ATP4-/ADP3- ratio and the free AMP2- concentration; older animals are better able to maintain a high intramuscular ATP4-/ADP3- ratio and a low AMP2- concentration; IMP is produced in particular under conditions when the muscle has to work under extreme stress. IMP possibly exerts a feed-back control on the contraction system.

Published
1986
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4. The nicotinamide nucleotide specificity of glutamate dehydrogenase in intact rat-liver mitochondria.

Author

Hoek JB, Ernster L, de Haan EJ, and Tager JM

Subjects
Animals, Hydrazones pharmacology, Ketoglutaric Acids, Kinetics, L-Lactate Dehydrogenase, Mitochondria, Liver drug effects, Nitriles pharmacology, Oligomycins pharmacology, Oxidation-Reduction, Pyruvate Kinase, Rats, Structure-Activity Relationship, Time Factors, Ultrasonics, Glutamate Dehydrogenase metabolism, Mitochondria, Liver enzymology, NAD, NADP
Published
1974
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7. Glutamate oxidation in rat-liver homogenate.

Author

Hoek JB, Charles R, De Haan EJ, and Tager JM

Subjects
Adenine Nucleotides metabolism, Ammonia metabolism, Animals, Arginine biosynthesis, Aspartic Acid biosynthesis, Citrulline biosynthesis, Glutaminase, Kinetics, Nitrogen metabolism, Rats, Urea biosynthesis, Urease, Glutamates metabolism, Glutamine biosynthesis, Liver metabolism
Published
1969
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9. Control of nicotinamide nucleotide-linked oxidoreductions in rat-liver mitochondria.

Author

Tager JM, Papa S, de Haan EJ, D'Aloya R, and Quagliariello E

Subjects
Acetoacetates, Adenosine Triphosphate, Ammonia, Animals, Carbon Dioxide, Citrates, Dicumarol, Electron Transport, Glutamate Dehydrogenase, Glutamates, Hydroxybutyrates, Ketoglutaric Acids, Kinetics, Oligomycins, Oxaloacetates, Oxidation-Reduction, Rats, Serum Albumin, Bovine, Spectrophotometry, Mitochondria, Liver metabolism, NAD, NADP, Oxidoreductases
Published
1969
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10. Permeability of isolated mitochondria to oxaloacetate.

Author

Gimpel JA, de Haan EJ, and Tager JM

Subjects
Animals, Biological Transport, Cell Membrane Permeability, Columbidae, Guinea Pigs, Kinetics, Liver metabolism, Malonates pharmacology, Mitochondria metabolism, Myocardium cytology, NAD metabolism, NADP metabolism, Organ Specificity, Oxidation-Reduction, Rabbits, Rats, Species Specificity, Time Factors, Mitochondria, Liver metabolism, Oxaloacetates metabolism
Published
1973
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13. Cell respiration.

Author

de Haan EJ

Subjects
Animals, Cytosol metabolism, Hypoxia metabolism, Mice, Rabbits, Rats, Endoplasmic Reticulum metabolism, Lysosomes metabolism, Oxygen Consumption
Published
1970

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