NEUTRAL AMINO ACIDS IN THE BRAIN: CHANGES IN RESPONSE TO FOOD INGESTION

NEUTRAL AMINO ACIDS IN THE BRAIN: CHANGES IN RESPONSE TO FOOD INGESTION Abstract— The brain levels of each of the aromatic and branched‐chain amino acids change 2 h after fasting rats begin to consume either a carbohydrate‐fat diet or a similar diet containing 18% or 40% protein. Carbohydrate‐fat ingestion elevates the concentrations of each of the aromatic amino acids in brain, while substantially depressing those of the branched‐chain amino acids. The inclusion of protein in this diet suppresses the increases in brain aromatic amino acids and attenuates the decreases in the branched‐chain amino acids. The changes in the brain level of each neutral amino acid following the ingestion of any of these diets correlate extremely well with the effects of the diet on the serum neutral amino acid pattern, specifically on the serum concentration ratio of each neutral amino acid to the sum of the other neutral amino acids. The diet‐induced changes in the brain level of each of the amino acids also correlate surprisingly well with the calculated rate of brain influx for each amino acid. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neurochemistry Wiley

NEUTRAL AMINO ACIDS IN THE BRAIN: CHANGES IN RESPONSE TO FOOD INGESTION

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Publisher
Wiley
Copyright
Copyright © 1978 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0022-3042
eISSN
1471-4159
DOI
10.1111/j.1471-4159.1978.tb10489.x
Publisher site
See Article on Publisher Site

Abstract

Abstract— The brain levels of each of the aromatic and branched‐chain amino acids change 2 h after fasting rats begin to consume either a carbohydrate‐fat diet or a similar diet containing 18% or 40% protein. Carbohydrate‐fat ingestion elevates the concentrations of each of the aromatic amino acids in brain, while substantially depressing those of the branched‐chain amino acids. The inclusion of protein in this diet suppresses the increases in brain aromatic amino acids and attenuates the decreases in the branched‐chain amino acids. The changes in the brain level of each neutral amino acid following the ingestion of any of these diets correlate extremely well with the effects of the diet on the serum neutral amino acid pattern, specifically on the serum concentration ratio of each neutral amino acid to the sum of the other neutral amino acids. The diet‐induced changes in the brain level of each of the amino acids also correlate surprisingly well with the calculated rate of brain influx for each amino acid.

Journal

Journal of NeurochemistryWiley

Published: Jun 1, 1978

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