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Protection against A[beta]-induced memory loss by tripeptide D-Arg-L-Glu-L-Arg

Mileusnic, Radmila; Lancashire, Christine; Clark, Jonathan and Rose, Stephen (2007). Protection against A[beta]-induced memory loss by tripeptide D-Arg-L-Glu-L-Arg. Behavioural Pharmacology, 18(3) pp. 231–238.

URL: http://www.behaviouralpharm.com/pt/re/bpharm/abstr...
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Abstract

The molecular and cellular mechanisms underlying the memory deficits in Alzheimer's disease are increasingly thought to be associated with faulty processing of amyloid precursor protein. Following our earlier findings that it is possible to use the tripeptide RER (NH2-D-Arg-L-Glu-L-Arg-COOH, derived from the external domain of amyloid precursor protein) to rescue memory in animal models, we report here that the diasteromeric (D/L) form of the acetylated tripeptide RER protects against A[beta]-induced memory loss for a passive avoidance task in young chicks and enhances retention for a weak version of the task when injected peripherally up to 12 h before training. The tripeptide readily crosses the blood-brain barrier, binds to membrane receptor sites in the brain and is without adverse effects on general behaviour. We discuss this finding in the context of other studies of the importance of peptides containing D-amino acids, and conclude that these RER-related peptides may form the basis for a potential therapeutic agent in the early stages of Alzheimer's disease.

Item Type: Journal Article
ISSN: 0955-8810
Keywords: Memory, amnesia, Alzheimer's disease, RER
Academic Unit/Department: Science > Life, Health and Chemical Sciences
Interdisciplinary Research Centre: Biomedical Research Network (BRN)
Item ID: 7624
Depositing User: Astrid Peterkin
Date Deposited: 07 Jun 2007
Last Modified: 10 Mar 2014 10:30
URI: http://oro.open.ac.uk/id/eprint/7624
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