The invention relates to the use of the PAT nonapeptide in the manufacture of a drug for preventing or treating a neurodegenerative disease such as Alzheimer's disease. The parenteral route of administration is preferable, including the subcutaneous, intraperitoneal, intravenous or intranasal routes. The invention also relates to an injectable formulation containing the PAT nonapeptide which can be administered to patients suffering from a neurodegenerative disease such as Alzheimer's disease.
