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Träfflista för sökning "WFRF:(Lindahl Bengt) ;pers:(Nordberg Agneta)"

Sökning: WFRF:(Lindahl Bengt) > Nordberg Agneta

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  • Svedberg, Marie M., et al. (författare)
  • [C-11]PIB-amyloid binding and levels of A beta 40 and A beta 42 in postmortem brain tissue from Alzheimer patients
  • 2009
  • Ingår i: Neurochemistry International. - : Elsevier BV. - 0197-0186 .- 1872-9754. ; 54:5-6, s. 347-357
  • Tidskriftsartikel (refereegranskat)abstract
    • beta-Amyloid (A beta) deposits are one of the major histopathological hallmarks of Alzheimer's disease (AD). The amyloid-imaging positron emission tomography (PET) tracer [C-11]PIB (N-methyl[C-11]2-(4'-methylaminophenyl)-6-hydroxy-benzothiazole) is used in the assessment of A beta deposits in the human brain. [C-11]PIB-amyloid interaction and insoluble A beta 40 and A beta 42 peptide levels in the brain were quantified in postmortem tissue from nine AD patients and nine age-matched control subjects in the temporal, frontal and parietal cortices and the cerebellum. Autoradiographical studies showed significantly higher densities of specific [C-11]PIB-amyloid binding in gray matter in the temporal and parietal cortex (62 fmol/mg tissue) in AD patients as compared to control subjects, whereas the density was somewhat lower in the frontal cortex (56 fmol/mg tissue). No specific binding could be detected in the AD cerebellum or in the tissues from the control subjects (<= 5 fmol/mg tissue). Insoluble A beta 40 and total A beta levels (i.e. sum of A beta 40 and A beta 42) were significantly higher in patients than in controls in all measured cortical regions as determined using ELISA, which was confirmed using immunohistochemistry. The present findings show a more regional selective distribution of [C-11]PIB amyloid binding than previously reported. Moreover, it is suggested that some of the [C-11]PIB binding and insoluble A beta seen in control subjects may be amyloid in the blood vessels. (C) 2009 Elsevier Ltd. All rights reserved.
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