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Astrocytes, not neurons, show most prominent staining for spermidine/spermine-like immunoreactivity in adult rat brain.
- Source :
-
Glia [Glia] 1997 Feb; Vol. 19 (2), pp. 171-9. - Publication Year :
- 1997
-
Abstract
- Polyamines are involved in a variety of basic cellular functions including proliferation and differentiation. Recent in vitro evidence suggests a role for spermidine or spermine as possible modulators of ionotropic glutamate receptors and inwardly rectifying potassium channels. However, before a functional role of spermidine or spermine in vivo can be considered, the presence of these polyamines in the mammalian central nervous system must be demonstrated. Here we report the localization of spermine/spermidine-like immunoreactivity in the major cell types of the adult rat brain, using polyclonal antibodies raised against glutaraldehyde-conjugated spermine. Neuronal staining was restricted to several discrete brain nuclei and was generally weak. In the hippocampus, immunoreactivity was found in the area of perforant path terminals and in the CA2/CA3 subfields. The CA1 region and the area of the mossy fiber terminals was largely negative. Throughout the brain, the most prominent staining was displayed by astrocytes, as confirmed by comparison with astrocyte and microglial markers, but immunolabel was also detected in oligodendrocytes and pericytes. Their intense staining for spermidine/spermine-like immunoreactivity suggests that astrocytes are the most likely source for extracellular polyamines in the rat brain.
- Subjects :
- Animals
Antibody Specificity
Arginine analysis
Brain cytology
Brain Chemistry
Enzyme-Linked Immunosorbent Assay
Ethanolamine
Ethanolamines analysis
Female
Histamine analysis
Immunohistochemistry
Lysine analysis
Male
Ornithine analysis
Putrescine analysis
Putrescine immunology
Rats
Rats, Inbred Lew
Spermidine analysis
Astrocytes chemistry
Neurons chemistry
Spermidine immunology
Subjects
Details
- Language :
- English
- ISSN :
- 0894-1491
- Volume :
- 19
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Glia
- Publication Type :
- Academic Journal
- Accession number :
- 9034833
- Full Text :
- https://doi.org/10.1002/(sici)1098-1136(199702)19:2<171::aid-glia8>3.0.co;2-3