a: IL-6 protein production in response to Gαs-coupled receptor agonists. BSMC were treated with the indicated drug for 24 h, and IL-6 secreted into culture media was measured by ELISA. 1μM Fsk, AVP, CGRP, glucagon, PGD2, substance P; 10 μM ATPƔS, BRL 37344, NECA. cAMP measured by EIA. b: cAMP production in response to Gαs – coupled receptor agonists. BSMC were pretreated with 0.2 mM IBMX prior to 10 min agonist exposure: 1μM Fsk, AVP, CGRP, glucagon, PGD2, substance P; or 10 μM ATPƔS, BRL 37344, NECA. cAMP was measured by EIA. Dashed line represents basal level. Mean ± SEM, n=3–4. * indicates p<.05 compared to vehicle