β-Amyloid (11-22) is a peptide fragment of β-Amyloid.Beta-amyloid peptide (Abeta), the major constituent of amyloid plaques in the brains of Alzheimer’s patients, is thought to be the cause of Alzheimer’s Disease (AD). AD is the most common neurodegenerative disease and afflicts about 10% of the population over 60.

Antibodies corresponding to beta-amyloid (4-10) are effective in vivo inhibitors of cytotoxicity, amyloid plaque formation and special memory disturbances in mice. This peptide does not elicit an inflammatory response.

Intracerebroventricular administration of synthetic peptides Beta-amyloid (12-20), (12-28), and (18-28) causes amnesia in mice. These peptides have only amino acid residues VFF at position 18 to 20 in common, suggesting the amnestic effect of the triad.