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rdf:type |
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lifeskim:mentions |
umls-concept:C0017070,
umls-concept:C0027882,
umls-concept:C0034693,
umls-concept:C0034721,
umls-concept:C0439830,
umls-concept:C0439849,
umls-concept:C0445223,
umls-concept:C0449475,
umls-concept:C0457405,
umls-concept:C0543482,
umls-concept:C1552599,
umls-concept:C1704787
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pubmed:dateCreated |
1985-7-17
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pubmed:abstractText |
Combining intracellular recording and dye-injection techniques permitted direct correlation of neuronal soma size with peripheral nerve conduction velocity in individual neurones of the L4 dorsal root ganglion (d.r.g.) of the anaesthetized 5-8-week-old rat. The conduction velocities fell into two main groups; those greater than 14 m/s (A alpha and beta fibres) and those less than 8 m/s (A delta and C fibres). Fibres with conduction velocities in the A delta range (2.2-8 m/s) in the sciatic nerve between the sciatic notch and the neuronal soma in the d.r.g. often conducted more slowly, that is in the C-fibre range (less than 1.4 m/s), in the periphery from the tibial nerve to the sciatic notch. For the fast-conducting myelinated afferents, there was a loose positive correlation between cell size and the conduction velocity of the peripheral axon, whereas a clearer positive correlation existed between neuronal cell size and axonal conduction velocity both for A delta- and for C-fibre afferents. The relationship of the cell cross-sectional area (measured at the nucleolar level), to the cell volume for each neuronal soma was similar for the different conduction velocity groups. The somata of the fast-conducting myelinated A alpha and A beta fibres had a similar mean and range of cross-sectional areas to those of the large light cell population. The somata with A delta and C fibres were of a more uniform size and were restricted to the smaller cells within the ganglia. The mean and range of cross-sectional areas of the C cells was similar to those of the small dark cell population. A delta somata had a larger mean and range of cell sizes than those of the small dark cell population. The relationships of peripheral axon type to the morphological cell types are discussed.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-1004708,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-1183525,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-1248030,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-13306825,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-13564422,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-14354669,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-4197110,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-4458950,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-4709266,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-479922,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-490183,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-490184,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-4997742,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-5466178,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-597845,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-6176904,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-6282398,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-6434599,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-688392,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-874346,
http://linkedlifedata.com/resource/pubmed/commentcorrection/3999040-978547
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0022-3751
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
359
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
31-46
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:3999040-Action Potentials,
pubmed-meshheading:3999040-Aging,
pubmed-meshheading:3999040-Animals,
pubmed-meshheading:3999040-Biometry,
pubmed-meshheading:3999040-Female,
pubmed-meshheading:3999040-Ganglia, Spinal,
pubmed-meshheading:3999040-Neural Conduction,
pubmed-meshheading:3999040-Neurons,
pubmed-meshheading:3999040-Rats,
pubmed-meshheading:3999040-Rats, Inbred Strains,
pubmed-meshheading:3999040-Sciatic Nerve,
pubmed-meshheading:3999040-Tibial Nerve
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pubmed:year |
1985
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pubmed:articleTitle |
Conduction velocity is related to morphological cell type in rat dorsal root ganglion neurones.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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