The dual PDE3/PDE4 phosphodiesterase inhibitor RPL554 produces more complete bronchodilator responses than the beta2-agonist salbutamol and the anti-muscarinic agent ipratropium bromide, alone and in combination, in guinea-pig isolated trachea
Radhakrishnan Venkatasamy, Clive Page, Domenico Spina
European Respiratory Journal 2015 46: PA3960; DOI: 10.1183/13993003.congress-2015.PA3960