Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Increase of macrophage colony‐stimulating factor and granulocyte‐macrophage colony‐stimulating factor receptors in the regenerating rat facial nucleus

Increase of macrophage colony‐stimulating factor and granulocyte‐macrophage colony‐stimulating... Proliferation of microglial cells commonly occurs in the response of the central nervous system to injury, but little is known about how this process is regulated in vivo. Here we have studied the expression of receptors to macrophage colony‐stimulating factor (MCSF) and granulocyte‐macrophage colony‐stimulating factor (GMCSF) in the normal and regenerating rat facial motor nucleus using receptor immunocytochemistry and in situ ligand binding methods. Under normal conditions, immocytochemical staining with anti‐MCSF receptor (MCSFR) antibody revealed a moderate but selective labelling of microglia‐like cells of the facial motor nucleus. This immunostaining also colocalized with MUC102, a new monoclonal antibody raised against microglial cells in the rat central nervous system. Axotomy of the facial nerve led to a rapid increase in MCSFR‐staining intensity 1 day after injury, which became maximal 7 days postoperatively and then decreased. A similar but somewhat slower increase was also observed for the specific (125I)MCSF binding wiht a maximum at 7 days Specific (125I)GMCSF binding also increased, peaking at 4 days postoperatively and then rapidly decreasing to normal levels at 21 days after axotomy. In summary, axotomy of the facial nerve led to a rapid increase in receptors for MCSF and GMCSF, which coincided with the pattern of microglial proliferation in the regenerating facial motor nucleus. This apparent up‐regulation of receptors for microglial growth factors may play an important role in preparing the microglia to participate in the cellular response to injury in the regenerating central nervous system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neuroscience Research Wiley

Increase of macrophage colony‐stimulating factor and granulocyte‐macrophage colony‐stimulating factor receptors in the regenerating rat facial nucleus

Loading next page...
 
/lp/wiley/increase-of-macrophage-colony-stimulating-factor-and-granulocyte-wUNUzcKye1

References (26)

Publisher
Wiley
Copyright
Copyright © 1991 Wiley‐Liss, Inc.
ISSN
0360-4012
eISSN
1097-4547
DOI
10.1002/jnr.490300412
pmid
1664863
Publisher site
See Article on Publisher Site

Abstract

Proliferation of microglial cells commonly occurs in the response of the central nervous system to injury, but little is known about how this process is regulated in vivo. Here we have studied the expression of receptors to macrophage colony‐stimulating factor (MCSF) and granulocyte‐macrophage colony‐stimulating factor (GMCSF) in the normal and regenerating rat facial motor nucleus using receptor immunocytochemistry and in situ ligand binding methods. Under normal conditions, immocytochemical staining with anti‐MCSF receptor (MCSFR) antibody revealed a moderate but selective labelling of microglia‐like cells of the facial motor nucleus. This immunostaining also colocalized with MUC102, a new monoclonal antibody raised against microglial cells in the rat central nervous system. Axotomy of the facial nerve led to a rapid increase in MCSFR‐staining intensity 1 day after injury, which became maximal 7 days postoperatively and then decreased. A similar but somewhat slower increase was also observed for the specific (125I)MCSF binding wiht a maximum at 7 days Specific (125I)GMCSF binding also increased, peaking at 4 days postoperatively and then rapidly decreasing to normal levels at 21 days after axotomy. In summary, axotomy of the facial nerve led to a rapid increase in receptors for MCSF and GMCSF, which coincided with the pattern of microglial proliferation in the regenerating facial motor nucleus. This apparent up‐regulation of receptors for microglial growth factors may play an important role in preparing the microglia to participate in the cellular response to injury in the regenerating central nervous system.

Journal

Journal of Neuroscience ResearchWiley

Published: Dec 1, 1991

There are no references for this article.