PROBLEM TO BE SOLVED: To provide methods for preventing and/or treating pancreatic disorders, particularly those related to diabetes.SOLUTION: A method for using a neurturin product and/or a modulator/effector thereof is provided to manufacture medicaments stimulating and/or inducing the differentiation of insulin producing cells from progenitor cells. Preferably, the progenitor cells are stem cells.COPYRIGHT: (C)2012,JPO&INPIT【課題】膵臓障害、特に糖尿病に関連する膵臓障害を予防及び/又は治療法を創出する。【解決手段】ニュールツリン産物を含む薬剤を投与することにより、上述の課題が解決できた。【選択図】図1A