S-03 Water channel (Aquaporin) as a target for drug development   S03-1. The role of aquaporins in kidney disorders   S03-2. Pathophysiology and drug treatment of dry mouth: AQP5 trafficking   S03-3. Inflammatory stimulation down-regulates AQP3 expression and AQP5 function in airway epithelial cells.   S03-4. Roles of AQP3 in the skin   S03-5. Pathophysiological roles of aquaporins in brain disorders.