Effects of RP 73401, a novel, potent and selective phosphodiesterase type 4 inhibitor, on contractility of human, isolated bronchial muscle

1 The aim of this study was to investigate the smooth muscle relaxant effects of the novel, selective phosphodiesterase (PDE) type 4 inhibitor, RP 73401 in comparison with the classical PDE 4 inhibitor, rolipram, the non‐selective PDE inhibitor, theophylline and the β‐adrenoceptor agonist, isoprenal...

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