This study evaluated the efficacy and safety of MK-0359, a selective and potent oral PDE4 inhibitor, in chronic asthma.

MK-0359是PDE4的选择性、强效、口服的抑制剂，本研究评价了慢性哮喘中MK-0359的安全性和有效性。

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Roflumilast is a phosphodiesterase-4 (PDE4) inhibitor, which has potent anti-inflammatory effects in the pulmonary system.

罗氟司特为磷酸二酯酶- 4 (PDE4)抑制剂，对肺部系统具有高效的抗炎活性。

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