Linked Life Data

2853901

Source:http://linkedlifedata.com/resource/pubmed/id/2853901

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-5-15
pubmed:abstractText
The end-structure of afferent axons chronically severed in the rat sciatic nerve or dorsal column (DC) was visualized by centrifugal transport of horseradish peroxidase (HRP) or wheatgerm agglutinin conjugated to HRP (WGA:HRP) injected into the L4 or L5 dorsal root ganglion. Nerve regeneration was prevented and neuroma formation encouraged by tightly ligating the cut nerve end. For the first few weeks postoperative, the time during which afferents trapped in a nerve-end neuroma generate their most intense ectopic impulse barrage, the developing neuroma was dominated by swollen terminal end-bulbs. There was some axonal dying-back, retrograde fiber growth, and terminal sprouting, but little preterminal branching. The rich tangle of fine preterminal branches usually thought of in relation to nerve-end neuromas did not elaborate until several months postoperative, a time when the neuroma is relatively quiescent electrically. Afferents cut in the DC, which never develop dramatic ectopic electrical activity, showed morphological peculiarities similar to nerve-end neuromas during the early postoperative period, including retrograde fiber growth and minimal sprouting. They did not, however, go on to form luxuriant branches. These data provide preliminary clues as to the structure of the ectopic impulse-generating mechanism thought to underlie paresthesias and pain associated with peripheral nerve injury.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0899-0220
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
79-99
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
End-structure of afferent axons injured in the peripheral and central nervous system.
pubmed:affiliation
Department of Anatomy, Karolinska Institute, Stockholm, Sweden.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't