Linked Life Data

1893384

Source:http://linkedlifedata.com/resource/pubmed/id/1893384

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
18
pubmed:dateCreated
1991-10-21
pubmed:abstractText
The large respiratory epithelial cells within primary cultures of newt (Taricha granulosa) lung are uniquely suited for high resolution video-enhanced light-microscopic studies. We show here that these cells incorporate crocidolite asbestos fibers within 18 h by endocytosis. Once inside the cell, fibers less than 5 microns in length are seen by video light microscopy to undergo saltatory transport at a maximum velocity of 1.18 microns/s. By contrast, fibers over 5 microns long rarely exhibit saltatory motion. Over time, all of the fibers become preferentially located near the nucleus. This perinuclear accumulation is largely inhibited by disassembling the cytoplasmic microtubules with nocodazole. Same cell correlative light and electron microscopy reveal that fibers exhibiting saltatory behavior are enclosed within a membrane. From these observations we conclude that, upon incorporation into epithelial cells, asbestos fibers undergo size-dependent active transport along cytoplasmic microtubules. Our data are the first to link the dimension-dependent transforming ability of asbestos fibers to a basic cellular function, i.e., the microtubule-dependent transport of cellular components.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
51
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4942-7
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Crocidolite asbestos fibers undergo size-dependent microtubule-mediated transport after endocytosis in vertebrate lung epithelial cells.
pubmed:affiliation
Wadsworth Center for Laboratories and Research, Albany, New York 12201.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.