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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Influence of SK&F 96148 on thromboxane-mediated responses in the airways of the cat.

The effects of SK&F 96148, a thromboxane receptor blocking agent, on bronchoconstrictor responses were investigated in paralyzed, anesthetized, mechanically ventilated cats. I.v. injections of the thromboxane A2 (TXA2) mimics, U-46619 and U-44069, produced dose-related increases in transpulmonary pressure and lung resistance (RL) and decreases in dynamic compliance (Cdyn). After administration of SK&F 96148, 5 mg/kg i.v., bronchoconstrictor responses to U-46619 and U-44069 were reduced markedly, whereas airway responses to prostaglandin (PG) F2 alpha, serotonin, PGD2, or the PGD2 metabolite, 9 alpha, 11 beta-PGF2, were not altered. The duration of action of SK&F 96148 was greater than 2 h, and the TXA2 receptor blockade was overcome when 10-fold larger doses of the TXA2 mimics were administered. Bronchoconstrictor responses to arachidonic acid, platelet-activating factor (PAF), endothelin-1, and E. coli endotoxin were blocked by SK&F 96148. The present data suggest that SK&F 96148 has selective thromboxane receptor blocking activity in the airways of the cat, and that bronchoconstrictor responses to endothelin-1, arachidonic acid, PAF, and E. coli endotoxin are mediated in part by the formation of TXA2.[1]

References

  1. Influence of SK&F 96148 on thromboxane-mediated responses in the airways of the cat. Dyson, M.C., Kadowitz, P.J. Eur. J. Pharmacol. (1991) [Pubmed]
 
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