Linked Life Data

2451989

Source:http://linkedlifedata.com/resource/pubmed/id/2451989

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1988-5-31
pubmed:abstractText
We have used the cupric/ferrocyanide reaction to study cation-binding in trigeminal ganglia and maxillary nerve of adult rats. Unmyelinated axons did not react, whereas myelinated axons were stained at nodal, paranodal or cleft sites. At 'nodal' sites, metallic deposits were found in the axoplasm, along the axolemma, and at the extracellular interfaces of the paranodal myelin. At 'paranodal' sites, particles were concentrated in the paranodal axoplasm and in the intracellular spaces of the myelin loops. Most maxillary axons examined at successive sites had all nodal or all paranodal staining, but 13 of 51 had a mixture. In trigeminal ganglia there was no staining of perineurial sheath, endoneurial cells or mast cells. Satellite cells and their basal laminae were prominently stained, with those around small neurons more reactive than those of large neurons. Patches of neuronal membrane on cell bodies were stained, more often for small than large neurons. The axon hillock and proximal stem axon were not stained in some cases, but approximately half the neurons had staining of perikaryal cytoplasm at the axon hillock or a dense asymmetric band in the proximal stem axon. Strong intraaxonal staining was found at the junction between unmyelinated proximal and myelinated distal stem axon. In distal stem axons, staining was found at the first myelin segment and at each successively thicker myelin segment; staining was mostly weak and paranodal, with intensity proportional to myelin thickness. The T-junction between stem and main myelinated axon had nodal or paranodal patterns; unmyelinated T-junctions were not stained. The varied cation-binding patterns in trigeminal ganglia show unusual properties of satellite cells and important differences between stem and main axons. The results that the cell membrane of axon hillock and proximal stem regions of many sensory large and small neurons may have numerous sodium channels and could affect signal propagation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0006-8993
pubmed:author
pubmed:issnType
Print
pubmed:day
8
pubmed:volume
443
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
125-36
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Cation-binding sites in trigeminal ganglia and maxillary nerve: unusual reactivity of perikarya, stem axons and satellite cells.
pubmed:affiliation
Department of Anesthesiology, University of Washington, Seattle 98195.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.