Document Detail


Differential appearance of extensively phosphorylated forms of the high molecular weight neurofilament protein in regions of mouse brain during postnatal development.
MedLine Citation:
PMID:  1898519     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The appearance and accumulation of extensively phosphorylated forms of the high molecular weight neurofilament protein (H-phos) was studied in six regions of mouse brain during postnatal development by quantitative immunoblot analyses. H-phos (migrating at 200 kDa) was detected in brainstem, cerebellum, cortex and hippocampus as early as postnatal day 1. While NF-H levels increased dramatically during subsequent postnatal development in these regions, and reached levels similar to those observed in adult brain by postnatal day 14, quantitative differences were observed in both the rate and the extent of increase among individual regions. The most rapid accumulation of H-phos was observed in brainstem and cortex, where H-phos increased within the first postnatal week to levels comparable to those of adult brain. However, H-phos exhibited a slower developmental change in cerebellum, where the levels increased uniformly over the first two postnatal weeks. In hippocampus, the major increase in H-phos levels was delayed until the second postnatal week. In contrast to its early detection in the above regions, H-phos was not detected in immunoblot analyses of olfactory bulb or hypothalamus cytoskeletons at postnatal day 1, indicating that in these regions the accumulated levels of posttranslationally modified forms of this protein appeared relatively late. Furthermore, H-phos levels in hippocampus did not level off at postnatal day 14 and continued to increase until at least postnatal day 21. Immunoblot analyses of whole embryonic brain revealed the presence of H-phos as early as embryonic day 17, demonstrating that some mouse brain regions carry out extensive phosphorylation of NF-H during embryonic development.(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
I Fischer; T B Shea
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of neuroimmunology     Volume:  31     ISSN:  0165-5728     ISO Abbreviation:  J. Neuroimmunol.     Publication Date:  1991 Jan 
Date Detail:
Created Date:  1991-01-24     Completed Date:  1991-01-24     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8109498     Medline TA:  J Neuroimmunol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  73-81     Citation Subset:  IM    
Affiliation:
Department of Biochemistry, E.K. Shriver Center, Waltham, MA 02254.
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MeSH Terms
Descriptor/Qualifier:
Animals
Brain / growth & development*
Brain Chemistry*
Intermediate Filament Proteins / analysis*,  genetics
Mice
Molecular Weight
Neurofilament Proteins
Phosphorylation
RNA, Messenger / analysis
Grant Support
ID/Acronym/Agency:
NS24725/NS/NINDS NIH HHS
Chemical
Reg. No./Substance:
0/Intermediate Filament Proteins; 0/Neurofilament Proteins; 0/RNA, Messenger

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