二羥丙茶堿抑制劑Dyphylline?is a?xanthine?derivative.?Dyphilline?exerts bronchodilator effects and to a lesser extent vasodilator and diuretic properties.?Dyphilline?probably acts as a competitive inhibitor of phosphodiesterase which leads to an increase in intracellular?cAMP. This results in relaxation of bronchial smooth muscle and other smooth muscles.?Dyphylline?may also antagonize?adenosinereceptors.?Dyphylline?is used in the treatment of acute bronchial asthma, chronic bronchitis and emphysema.
