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ID 18616
Eprint ID
18616
FullText URL
Thumnail 72_1299.pdf 599 KB
Title Alternative
Studies on the Free Amino Acids in the Brains XIII A Study on the Free Amino Acids in Various Parts of Human Brain
Author
Nishioka, Hirosuke
Abstract
By means of ion exchange column chromatography the author carried out quantitative analyses of 14 kinds of free amino acids including the related compounds using the brain of the person who died of acute loss of blood. The parts of the brain used for the analysis were frontal cortex, corpus callosum, caudate nucleus, globus pallidus, thalamus, hypothalamus and medulla oblongata. The results are as follows. 1. In corpus callosum which contains little cellular components extremely minute quantities of phosphoethanolamine, aspartic acid, glutamic acid and γ-aminobutyric acid could be detected. 2. In globus pallidus a surprisingly large quantity of γ-aminobutyric acid could be found and it was far greater than that contained in hypothalamus. 3. In medulla oblongata only small quantities of phosphoethanolamine, aspartic acid, and glutamic acid could be detected. Likewise γ-aminobutyric acid was found not so abundant. This seems to be due to the fact that the present experiment was conducted with medulla oblongata including white matter. 4. Although only in a small quantity, cystathionine could be assayed in all these parts except globus pallidus and thalamus. 5. Even from the comparative biochemistry the present quantitative analyses gave an interesting contrast to the values obtainable in the brains of lower animals. 6. Although it was difficult to recognize any distinct difference in the pattern of amino acids between the adult brain and the infant brain, there was a clear-cut difference in the amino acid pattern of the adult brain and that of the fetal brain. Namely, in the adult human brain there exist far greater quantities of aspartic acid, glutamic acid, γ-aminobutyrie acid, and N-acetylaspartic acid than those in the fetal brain and conversely far less quantities of phosphoethanolamine and taurine than in the latter. Likewise tyrosine detected in the fetal brain could not be recognized in the adult human brain.
Published Date
1960-07-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume72
Issue
issue5-7
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
1299
End Page
1306
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/72/5-7/72_5-7_1299/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma