PROBLEM TO BE SOLVED: To provide an agent for inhibiting the aggregation and an agent for lowering the toxicity of Aβ peptide, as well as an agent for the prevention and treatment of Alzheimer's disease.SOLUTION: This invention relates to an Aβ peptide oxidant wherein one or more amino acid residues that constitute Aβ peptide are oxidized (excluding an Aβ peptide oxidant wherein only Met is oxidized).
Aβ PEPTIDE OXIDANT