Abstract: The present invention relates to pharmaceutical compositions and methods for the prevention and/or treatment of lung diseases or disorders including the bronchial tree, in an animal or human, such as chronic obstructive pulmonary disease (COPD), and diseases related to or optionally associated with COPD-like lung disorders caused by ventilation-perfusion mismatches preferably in context with chronic bronchitis. The treatment includes administration of pharmaceutical compositions comprising vasoactive intestinal peptide (VIP), pituitary adenylate cyclase-activating polypeptide (PACAP), and biologically active analogues thereof, which comprise highly conservative sequence tracks.