Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1999-11-9
pubmed:abstractText
The effect of endotoxin was investigated on air-exposed cultured human middle ear epithelium. Concentrations of 0, 1 and 100 ng/ml endotoxin were used. Complete differentiation of the cells was not reached at 12 days. After 21 days, endotoxin had induced an increased proliferation of the epithelial layer. Furthermore, an increase in the number of secretory cells and in the amount and length of microvilli was observed at this time. There were no significant morphological differences between the high and the low endotoxin concentrations, which supports our hypothesis that endotoxin induces an all-or-nothing reaction. These findings are in agreement with our previous results on serially submerged cultured rat middle ear epithelium. From these results we conclude that endotoxin is an important factor in the disturbance of the morphology of the middle ear epithelium, which may lead to chronic otitis media with effusion. In addition, our tissue culture method proved to be a good model for further studies on human middle ear mucosa.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0301-1569
pubmed:author
pubmed:issnType
Print
pubmed:volume
61
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
201-5
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:articleTitle
Effect of endotoxin on cultured human middle ear epithelium.
pubmed:affiliation
Department of Otorhinolaryngology, Leiden University Medical Center, Leiden, The Netherlands. m.j.nell@ent.medfac.leidenuniv.nl
pubmed:publicationType
Journal Article