Linked Life Data

3397383

Source:http://linkedlifedata.com/resource/pubmed/id/3397383

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1988-9-2
pubmed:abstractText
We have developed a method for studying the permeability properties of human endothelia in vitro. Human umbilical vein endothelial cells (HUVEC) were cultured on a substrate of human amnion. Confluent monolayers of these cells demonstrated 6-12 delta.cm2 of electrical resistance (a measure of their permeability to ions) and restricted the transendothelial passage of albumin from their apical to their basal surface. To determine whether leukocyte emigration alters endothelial permeability in this model, we examined the effects of migrating human polymorphonuclear leukocytes (PMN) on these two parameters. Few PMN migrated across the HUVEC monolayers in the absence of chemoattractants. In response to chemoattractants, PMN migration through HUVEC monolayers was virtually complete within 10 minutes and occurred at random locations throughout the monolayer. PMN migrated across the monolayer via the paracellular pathway. Although one PMN migrated across the monolayer for each HUVEC, PMN migration induced no change in electrical resistance or albumin permeability of these monolayers. At this PMN:HUVEC ratio, these permeability findings were correlated morphologically to measurements that HUVEC paracellular pathway size increases by less than 0.22% with PMN migration. This increase is insufficient to effect a measurable change in the electrical resistance of the endothelial cell monolayer. These findings demonstrate that increased permeability of cultured endothelial cell monolayers is not a necessary consequence of PMN emigration.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0021-9541
pubmed:author
pubmed:issnType
Print
pubmed:volume
135
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
355-66
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Effects of human neutrophil chemotaxis across human endothelial cell monolayers on the permeability of these monolayers to ions and macromolecules.
pubmed:affiliation
Department of Physiology and Cellular Biophysics, College of Physicians & Surgeons, Columbia University, New York, New York 10032.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't