PROBLEM TO BE SOLVED: To provide a proteasome activator which activates proteasome removing abnormal protein, and a carbonyl oxide protein inhibitor.SOLUTION: The proteasome activator comprises silybin maltoside as an active ingredient. The carbonyl oxide protein inhibitor comprises silybin maltoside as an active ingredient.COPYRIGHT: (C)2012,JPO&INPIT【課題】プロテアソーム活性化剤を提供する。【解決手段】シリビンマルトシドを有効成分とするプロテアソーム活性化剤。【選択図】図1