Source:http://linkedlifedata.com/resource/pubmed/id/12137764
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
2002-7-24
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pubmed:abstractText |
Previous electrophysiological studies have demonstrated that tetrodotoxin-resistant (TTX-R) sodium channels contribute to action potential electrogenesis and conduction along non-myelinated PNS axons. Moreover, recent work has established that TTX-R sodium channels play a major role in the generation of action potentials in the terminals of non-myelinated nociceptive axons innervating the cornea. We have utilized subtype-specific antibodies to sodium channels Na(v)1.8 and Na(v)1.9 to examine the molecular identity of the TTX-R sodium channels that are present in these axons. Both Na(v)1.8 and Na(v)1.9 sodium channels are expressed diffusely along the entire lengths of non-myelinated corneal axons, from the nerve plexus at the corneoscleral limbus to the distal corneal leash fibers. Moreover, both Na(v)1.8 and Na(v)1.9 are localized at the bulb-like nerve terminals of the leash fibers within the superficial epithelial layers of the cornea. These observations suggest that both TTX-R sodium channels Na(v)1.8 and Na(v)1.9 contribute to the electrogenesis of non-myelinated axons of the cornea.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Aug
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pubmed:issn |
0014-4835
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
75
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
193-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:12137764-Action Potentials,
pubmed-meshheading:12137764-Animals,
pubmed-meshheading:12137764-Antibodies,
pubmed-meshheading:12137764-Axons,
pubmed-meshheading:12137764-Cornea,
pubmed-meshheading:12137764-Fluorescent Antibody Technique,
pubmed-meshheading:12137764-Male,
pubmed-meshheading:12137764-Microscopy, Confocal,
pubmed-meshheading:12137764-Rats,
pubmed-meshheading:12137764-Rats, Sprague-Dawley,
pubmed-meshheading:12137764-Sodium Channels,
pubmed-meshheading:12137764-Tetrodotoxin
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pubmed:year |
2002
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pubmed:articleTitle |
Molecular identities of two tetrodotoxin-resistant sodium channels in corneal axons.
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pubmed:affiliation |
Department of Neurology and Paralyzed Veterans of America/Eastern Paralyzed Veterans Association Neuroscience Research Center, Yale University School of Medicine, New Haven, CT 06510, USA. joel.black@yale.edu
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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