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ID 30465
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Author
Nakamura, Mitsuo
Itano, Toshifumi
Yamaguchi, Fuminori
Mizobuchi, Masayuki
Tokuda, Masaaki
Etoh, Siji
Hosokawa, Kiyoshi
Ohmoto, Takashi
Hatase, Osamu
Abstract

Peptides and proteins in the extracellular space in the central nervous system were investigated in vivo using an intracerebral microdialysis probe. The molecular cut-off of the hollow fiber which was used for the probe was approximately 100 kDa. We examined recovery rates of several compounds in vitro. The recovery rates of proteins and peptides were between 7-28%, with the exceptions of substance P and insulin-like growth factor I. The recovery rates of monoamines and their metabolites were 22-40%. In in vivo studies, two major proteins with apparent molecular weights of 62 kDa and 12 kDa, and several minor proteins (28 kDa, 43 kDa, 52 kDa and 70 kDa) were detected by SDS-polyacrylamide gel electrophoresis in the dialysate from a probe implanted in the striatum of anesthetized rats. These results suggest that the newly developed, intracerebral microdialysis probe might be useful for investigating the dynamic changes of peptides and proteins in the central nervous system.

Keywords
protein
peptide
microdialysis
extracellular space
probe
Amo Type
Article
Published Date
1990-02
Publication Title
Acta Medica Okayama
Volume
volume44
Issue
issue1
Publisher
Okayama University Medical School
Start Page
1
End Page
8
ISSN
0386-300X
NCID
AA00508441
Content Type
Journal Article
language
英語
File Version
publisher
Refereed
True
PubMed ID
Web of Science KeyUT