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Bleomycin-induced lung injury in the rat: effects of the platelet-activating factor (PAF) receptor antagonist BN 52021 and platelet depletion.
| Content Provider | Semantic Scholar |
|---|---|
| Author | McAnulty, Robin J. Chung, Kian Fan Barnes, Peter J. Laurent, Geoffrey John |
| Copyright Year | 1990 |
| Abstract | Bleomycin is a highly effective antitumor agent, but pulmonary toxicity, characterized by an acute inflammatory reaction and associated pulmonary edema, limits clinical use of the drug. Platelets and platelet-activating factor (PAF), a membrane-derived phospholipid, have been implicated in the mechanisms that can mediate pulmonary microvascular injury. We sought to investigate the role of PAF in bleomycin-induced lung injury in the rat, using the PAF receptor antagonist BN 52021; and the role of platelets though the use of an anti-platelet antibody. Lung injury was induced by intratracheal bleomycin (1.5 mg) and assessed by measurements of lung wet weight and total pulmonary extravascular albumin space (TPEAS). Bleomycin caused a significant increase in both indices after 48 hr, compared with control animals (p less than 0.05). A single dose of BN 52021 (20 mg/kg orally) significantly reduced the bleomycin-induced increase in lung weight, but not the rise in TPEAS (p greater than 0.05). Increasing the dose of BN 52021 (20 mg/kg/12 hr, orally) had no additional effect. Reducing circulating platelet numbers by approximately 75% had no effect on either the increase in lung weight or TPEAS, observed 48 hr after bleomycin (p greater than 0.05). PAF may partially contribute to the acute inflammatory reaction seen after intratracheal bleomycin in rats. |
| Starting Page | 65 |
| Ending Page | 69 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| PubMed reference number | 1696541v1 |
| Volume Number | 85 |
| Journal | Environmental health perspectives |
| Alternate Webpage(s) | http://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=A99375391B78F7BB6DC559AAF797E84B?doi=10.1.1.277.3861&rep=rep1&type=pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Adverse reaction to drug Antineoplastic Agents BN 52021 Bleomycin Blood Platelets Idiopathic Pulmonary Fibrosis Lung Injury Lung diseases Oral cavity Phospholipids Platelet Activating Factor Platelet Count measurement Pulmonary Edema Scimitar Syndrome Structure of parenchyma of lung Tissue membrane Tuberculosis, Pulmonary |
| Content Type | Text |
| Resource Type | Article |