Abstract
1. Arachidonic acid caused larger contractions to indomethacin-tested guinea-pig trachea than in control tracheae. 2. No change in contractions was obtained in tracheae treated with 5,8, 11, 14, eicosatetraynoic acid (ETYA 10 micro M). 3. ETYA (100 micro M) blocked the effect of indomethacin on arachidonic acid-induced responses. Likewise BW 755c (113 micro M) reversed the effect of indomethacin. 4. The results show that arachidonate lipoxygenase products may be responsible for the contractile responses seen in the presence of indomethacin.
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Selected References
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