The nonapeptide 149,YFPGQFAFS157 (chemerin-9), corresponding to the C terminus of processed chemerin, retained most of the activity of the full-size protein, with regard to agonism toward the chemerinR.the natural ligand of ChemR23 (chemerinR).

MAO-B-IN-9 is a monoamine oxidase B MAO-B inhibitor (IC50: 0.18 μM) that crosses the blood-brain barrier with potency, selectivity and time-dependence.

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.