Corticosteroids Inhibit Sphingosine 1-Phosphate–Induced Interleukin-6 Secretion from Human Airway Smooth Muscle via Mitogen-Activated Protein Kinase Phosphatase 1–Mediated Repression of Mitogen and Stress-Activated Protein Kinase 1Wenchi Che, Alaina J. Ammit|American Journal of Respiratory Cell and Molecular Biology|2013Cited by 28