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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
26
pubmed:dateCreated
1986-8-8
pubmed:abstractText
Mechanical removal of the airway epithelium alters the in vitro reactivity of airway smooth muscle. The modulation of reactivity may involve the release of inhibitory and excitatory factors from epithelial cells. Guinea pigs sensitized with ovalbumin have been used as an animal model of airway hyperreactivity. We evaluated the influence of the epithelium on the reactivity of in vitro tracheal smooth muscle from control and ovalbumin-sensitized guinea pigs, and the extent to which the presence of the epithelium affects the contractile response to in vitro challenge with ovalbumin. In both control and ovalbumin-sensitized tissues, epithelium removal increased the sensitivity of the preparations to histamine, methacholine and isoproterenol to a similar extent, i.e., 2- to 2.5-fold. Epithelium removal resulted in an 8.1-fold increase in sensitivity to ovalbumin in sensitized tissues. The epithelium appears not only to modulate the reactivity of the tissues to bronchoactive agents, but it also influences the magnitude of the contractile response following antigen challenge.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0024-3205
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2461-8
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Epithelium modulates the reactivity of ovalbumin-sensitized guinea-pig airway smooth muscle.
pubmed:publicationType
Journal Article