Linked Life Data

2109002

Source:http://linkedlifedata.com/resource/pubmed/id/2109002

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1990-5-14
pubmed:abstractText
We studied the effects of prostacyclin (PGI2) on the airway responses to platelet-activating factor (PAF) in a randomized and crossover study in eight normal subjects. PGI2 or diluent (glycine buffer) was continuously infused on 2 separate days. Two breaths of PAF (21 micrograms) were inhaled three times every 15 minutes and airflow at 30% of vital capacity from partial flow-volume curves (Vp30) was measured. PGI2 (4 ng/kg/min) had no effect on Vp30 or blood pressure, whereas heart rate increased from 70.3 +/- 3.9 to 73.7 +/- 4.0 beats/min (mean +/- SEM; p less than 0.01). Two subjects did not complete the study because of transient hypotension. PGI2 had no effect on PAF-induced bronchoconstriction with maximal decreases in Vp30 of 42.0 +/- 8.0% (p less than 0.01) during PGI2 and 49.8 +/- 14.2% (p less than 0.02) during diluent infusion. Ex vivo platelet aggregation to PAF (10(-9) to 10(-7) mol/L) was significantly inhibited by PGI2. Circulating neutrophils decreased from 4.7 +/- 0.9 x 10(9)/L to 1.5 +/- 0.3 x 10(9)/L (p less than 0.05) 5 minutes after the first PAF inhalation during diluent infusion, whereas there was no significant change with PGI2. Thus, PGI2 does not influence PAF-induced bronchoconstriction in man despite causing marked inhibition of ex vivo PAF-induced platelet aggregation and preventing the fall of neutrophils.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0091-6749
pubmed:author
pubmed:issnType
Print
pubmed:volume
85
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
763-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Effects of prostacyclin on bronchoconstriction and neutropenia induced by inhaled platelet-activating factor in man.
pubmed:affiliation
Department of Thoracic Medicine, Brompton Hospital, London, England.
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial, Research Support, Non-U.S. Gov't