Linked Life Data

1804494

Source:http://linkedlifedata.com/resource/pubmed/id/1804494

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1992-5-1
pubmed:abstractText
The effect of chronic administration of platelet-activating factor (PAF) on airway reactivity, cell recruitment and lung morphology in the guinea-pig has been investigated. Alzet osmotic minipumps delivering either PAF (7.2 mg/kg/14 days) in 0.25% (w/v) bovine serum albumin in saline (saline-BSA), acetylcholine or saline-BSA alone were implanted s.c. in the neck region of guinea-pigs and connected to the jugular vein. In some experiments, implanted and non-implanted animals were treated daily with the PAF antagonist, BN 52021 (15 mg/kg, twice a day, p.o.). On day 15 after minipump implantation, the animals were anesthetized with urethane (1.2 g/kg, i.p.) and tracheal cannula was inserted for mechanical ventilation. Pulmonary inflation pressure (PIP) was monitored and airway responsiveness was assessed by administration of increasing doses of histamine (0.2-100 micrograms/kg, i.v.). As compared to saline-BSA-treated or non-implanted guinea-pigs, chronic treatment of the animals with PAF induced a significant (p less than 0.01) increase in airway response. No significant change in airway responsiveness was observed following chronic acetylcholine administration. In contrast, regardless of the treatment of the animals, no change in the threshold dose of histamine inducing alteration in PIP was noted, suggesting that PAF induces bronchopulmonary hyperreactivity rather than hyperresponsiveness. In addition, no significant difference was observed in the in vitro responsiveness to histamine of lung parenchymal strips from animals having received PAF or saline-BSA.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0952-0600
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
43-51
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Effect of long-term infusion of platelet-activating factor on pulmonary responsiveness and morphology in the guinea-pig.
pubmed:affiliation
Institut Henri Beaufour, Les Ulis, France.
pubmed:publicationType
Journal Article, Comparative Study