CXCL8 and bronchiolitis obliterans syndrome: A similar analogue, cilomilast, has also been shown to decrease basal levels of the immunomodulatory cytokine IL-8 in HBECs obtained from patients with bronchiolitis obliterans syndrome suggesting their anti-inflammatory effects in inflammatory diseases maybe by regulating immunomodulatory cytokines via cAMP pathways directly or indirectly [24].