PMID: 7541902Apr 1, 1995Paper

Expression of the proteolipid protein gene in glial cells of the post-natal peripheral nervous system of rodents

Neuropathology and Applied Neurobiology
I R GriffithsP Montague

Abstract

The proteolipid protein (PLP) gene encodes for two proteins, PLP and DM-20, which are produced by alternative splicing of exon 3B. PLP is the major CNS myelin protein and is postulated to play a structural role at the intraperiod line. Its developmental expression mirrors that of CNS myelination. DM-20 predominates in the embryo and prior to myelination of the CNS and may be involved in glial cell development. The PLP gene is expressed in the PNS in which DM-20 is the predominant isoform at all ages. In this study we describe the localization of the two isoforms in the post-natal rodent PNS using immunostaining and reverse transcriptase PCR. DM-20 is present in relatively high abundance in non-myelin-forming Schwann cells and within cytoplasmic regions of myelinated internodes, particularly the paranodes and Schmidt-Lanterman incisures and also the outer Schwann cytoplasm and perinuclear cytoplasm. DM-20 is also located in the perineuronal satellite cells of spinal, cranial and autonomic ganglia and in the ensheathing cells of the olfactory nerve layer of the olfactory bulb. PLP was detected by immunocytochemistry in the perinuclear region of myelinated internodes; PCR analysis indicated small amounts of PLP mRNA in the other l...Continue Reading

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Citations

Jan 4, 2001·Trends in Neurosciences·R D Fields, B Stevens
Mar 23, 2000·Progress in Neurobiology·B GarbayC Cassagne
Jun 14, 2000·Molecular and Cellular Neurosciences·C Smith-Slatas, E Barbarese
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Jun 1, 1996·Neuropathology and Applied Neurobiology·P J DickinsonP Montague
Apr 1, 1995·Neuropathology and Applied Neurobiology·I R GriffithsP Dickinson
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Jan 7, 1998·Journal of Neuroscience Research·R J Franklin, S C Barnett

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