Medical Dictionary

amyloid beta

noun
variants: or amyloid beta protein or amyloid beta peptide

medical Definition of amyloid beta

:beta-amyloid
  • Small amounts of amyloid beta are generated as an ordinary metabolic byproduct and are believed to do no harm, but larger amounts seem to be tied to Alzheimer's.
  • —January W. PayneU.S. News & World Report1 Aug. 2009
  • In Alzheimer's patients, the amyloid beta protein somehow goes off track and clumps together in sticky plaques that destroy healthy brain tissue.
  • —Nancy McVicar, The Sun-Sentinel (Fort Lauderdale, Florida)19 Feb. 2002
  • The treatment targets the buildup of lumps of protein fragments called amyloid beta peptides, which is the dominant theory of the cause of Alzheimer's.
  • —Victoria ColliverThe San Francisco Chronicle8 May 2009

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