Document Detail

Expression of c-JUN, JUN B and JUN D proteins in rat nervous system following transection of vagus nerve and cervical sympathetic trunk.
MedLine Citation:
PMID:  1762686     Owner:  NLM     Status:  MEDLINE    
Expression of c-JUN, JUN B and JUN D proteins was investigated in axotomized neurons following transection of the vagus nerve and the cervical sympathetic trunk in the rat. Vagotomy induced the expression of c-JUN and JUN D in the nodose ganglion, dorsal motor nucleus of the vagus nerve and nucleus ambiguus, whereas JUN B was not expressed in these areas, c-JUN and JUN D appeared after 10 h in the nodose ganglion and after 24 h in the dorsal motor nucleus of the vagus nerve with a maximum of immunoreactivity after 48 h. The c-JUN protein remained expressed at an increased level up to 100 days, whereas the immunoreactivity of JUN D declined after five days. Crush of the vagus nerve initially evoked an intense expression of c-JUN and JUN D, but in the course of regeneration the expression of c-JUN and JUN D had returned to more basal levels after 100 days. Similar to vagotomy, application of colchicine and vinblastine on to the intact vagus nerve induced expression of c-JUN and JUN D. On the other hand, application of lidocaine prior to vagotomy did not prevent the expression of these proteins. Transection of the cervical sympathetic trunk induced expression of c-JUN and JUN D, but not of JUN B, in the preganglionic sympathetic neurons of thoracic spinal cord. In these neurons, expression of c-JUN was still enhanced after 60 days whereas JUN D had returned to basal level. One hour after vagotomy, c-JUN and JUN B were transynaptically expressed in the area of central termination of sensory vagal neurons and declined within 10 h to basal levels. JUN D showed a late onset of expression, it appeared after 5 h and persisted for 60 days in this area. We postulate that the expression of c-JUN and JUN D in axotomized neurons is induced by deprivation of a target-derived suppressor.
T Herdegen; W Kummer; C E Fiallos; J Leah; R Bravo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuroscience     Volume:  45     ISSN:  0306-4522     ISO Abbreviation:  Neuroscience     Publication Date:  1991  
Date Detail:
Created Date:  1992-02-07     Completed Date:  1992-02-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7605074     Medline TA:  Neuroscience     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  413-22     Citation Subset:  IM    
II. Institute of Physiology, University of Heidelberg, F.R.G.
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MeSH Terms
Autonomic Fibers, Preganglionic / metabolism
Gene Expression Regulation
Nerve Crush
Nerve Regeneration
Nerve Tissue Proteins / biosynthesis*
Neurons / metabolism*
Nodose Ganglion / metabolism
Proto-Oncogene Proteins c-jun / biosynthesis*
Rats, Inbred Strains
Time Factors
Vagus Nerve / injuries,  metabolism,  physiology
Reg. No./Substance:
0/Nerve Tissue Proteins; 0/Proto-Oncogene Proteins c-jun

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