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S. Berl, G. Takagaki, D. Clarke, H. Waelsch (1962)
Metabolic compartments in vivo. Ammonia and glutamic acid metabolism in brain and liver.The Journal of biological chemistry, 237
R. O'Neal, R. Koeppe (1966)
PRECURSORS IN VIVO OF GLUTAMATE, ASPARTATE AND THEIR DERIVATIVES OF RAT BRAINJournal of Neurochemistry, 13
S. Berl, D. Clarke (1969)
Compartmentation of Amino Acid Metabolism
(1969)
Handbook of Neurochemistry (Edited by LAJTHA
W. Nicklas, D. Clarke, S. Berl (1969)
DECARBOXYLATION STUDIES OF GLUTAMATE, GLUTAMINE, AND ASPARTATE FROM BRAIN LABELLED WITH [1‐14C] ACETATE, l‐[U‐14C]‐ASPARTATE, AND l‐[U‐14C]GLUTAMATEJournal of Neurochemistry, 16
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Biological Chemistry, p. 540
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Biochen . biophys
Y. Machiyama, R. Balázs, D. Richter (1967)
Effect of K+‐stimulation on GABA metabolism in brain slices in vitroJournal of Neurochemistry, 14
R. O'Neal, R. Koeppe, E. Williams (1966)
Utilization in vivo of glucose and volatile fatty acids by sheep brain for the synthesis of acidic amino acids.The Biochemical journal, 101 3
H. Waelsch, S. Berl, C. Rossi, D. Clarke, D. Purpura (1964)
QUANTITATIVE ASPECTS OF CO2 FIXATION IN MAMMALIAN BRAIN IN VIVO *Journal of Neurochemistry, 11
A. Neidle, C. Berg, A. Grynbaum (1969)
THE HETEROGENEITY OF RAT BRAIN MITOCHONDRIA ISOLATED ON CONTINUOUS SUCROSE GRADIENTS 1Journal of Neurochemistry, 16
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Abstr
C. Berg, P. Mela, H. Waelsch (1966)
On the contribution of the tricarboxylic acid cycle to the synthesis of glutamate, glutamine and aspartate in brain.Biochemical and biophysical research communications, 23 4
S. Berl, T. Frigyesi (1969)
The turnover of glutamate, glutamine, aspartate and GABA labeled with [1-14C]acetate in caudate nucleus, thalamus and motor cortex (cat).Brain research, 12 2
S. Berl, W. Nicklasi, D. Clarke (1968)
COMPARTMENTATION OF GLUTAMIC ACID METABOLISM IN BRAIN SLICES *Journal of Neurochemistry, 15
—(1) Compartmentation of the metabolism of amino acids in brain has been studied in slices of cerebral cortex incubated with sodium (1‐14C)acetate, sodium (1‐14C)‐bicarbonate, (1‐14C)GABA or l‐(1‐14C)glutamate and in samples of brain after injection in vivo of (1‐14C)‐ or (3H)acetate. (2) The method of treatment of the slices (a) maintained in ice‐cold medium prior to incubation; (b) preincubation at 37°C and transfer to fresh medium affected the metabolism of the added, labelled substrate, particularly its labelling of glutamine. (3) The specific activity of glutamine labelled from the above metabolites was greater than that of glutamic acid in experiments of 10–30 minutes duration, whether or not subjected to pretreatment in the cold. (4) Incubation in medium containing 27 mm‐K+ was associated with a decrease in the relative specific activity (RSA) of glutamine, except for the increase when l‐(1‐14C)glutamate was the precursor. (5) The data have been discussed in terms of metabolic compartmentation and their consistency with the concept of the presence in brain of more than one citric acid cycle, one containing the relatively smaller pools of intermediates and associated with synthetic processes; the other containing the relatively larger pools of intermediates and functioning as a homeostatic buffer for energy metabolism.
Journal of Neurochemistry – Wiley
Published: Jul 1, 1970
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