title: Neuropathology of preclinical and clinical late-onset Alzheimer's disease.
abstract: We report on the neuropathological examinations of a 74-year-old woman with Alzheimer's disease (AD) and of her 47-year-old nondemented daughter. The brain of the mother showed fully developed pathological changes of AD. By contrast, the brain of the daughter revealed only perineuronal deposition of diffuse amyloid in cerebral cortex and striking abnormalities of the endosomal-lysosomal system, without neurofibrillary, glial, or microglial changes. These observations suggest that amyloid deposition and endosomal-lysosomal changes are early events in late-onset AD and that they may precede the onset of dementia by several decades.
authors.affiliation: Alzheimer's Disease Research Center, Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205-2196, USA.
authors.forename: J C
authors.initials: JC
authors.lastname: Troncoso
authors.forename: A M
authors.initials: AM
authors.lastname: Cataldo
authors.forename: R A
authors.initials: RA
authors.lastname: Nixon
authors.forename: J L
authors.initials: JL
authors.lastname: Barnett
authors.forename: M K
authors.initials: MK
authors.lastname: Lee
authors.forename: F
authors.initials: F
authors.lastname: Checler
authors.forename: D R
authors.initials: DR
authors.lastname: Fowler
authors.forename: J E
authors.initials: JE
authors.lastname: Smialek
authors.forename: B
authors.initials: B
authors.lastname: Crain
authors.forename: L J
authors.initials: LJ
authors.lastname: Martin
authors.forename: C H
authors.initials: CH
authors.lastname: Kawas
mesh_terms: D017668:Age of Onset; D000368:Aged; D000544:Alzheimer Disease / Q000473:pathology*; D000682:Amyloid / Q000032:analysis; D011992:Endosomes / Q000473:pathology; D005192:Family Health; D005260:Female; D005625:Frontal Lobe / Q000473:pathology; D020558:GTP Phosphohydrolases / Q000032:analysis; D019204:GTP-Binding Proteins / Q000032:analysis; D006801:Humans; D008247:Lysosomes / Q000473:pathology; D008875:Middle Aged; D058225:Plaque, Amyloid / Q000473:pathology; D017966:Pyramidal Cells / Q000737:chemistry / Q000201:enzymology / Q000473:pathology; D020696:rab5 GTP-Binding Proteins
chemical_list: D000682:Amyloid; D020558:GTP Phosphohydrolases; D019204:GTP-Binding Proteins; D020696:rab5 GTP-Binding Proteins