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Cerebrospinal fluid-induced retardation of amyloid beta aggregation correlates with Alzheimer's disease and the APOE epsilon 4 allele

Padayachee, Eden R., 1986 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
Zetterberg, Henrik, 1973 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
Portelius, Erik, 1977 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
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Borén, Jan, 1963 (author)
Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Wallenberg Laboratory
Molinuevo, J. L. (author)
Andreasen, N. (author)
Cukalevski, R. (author)
Linse, S. (author)
Blennow, Kaj, 1958 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
Andreasson, Ulf, 1968 (author)
Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology
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 (creator_code:org_t)
Elsevier BV, 2016
2016
English.
In: Brain Research. - : Elsevier BV. - 0006-8993. ; 1651, s. 11-16
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Misfolding and aggregation of amyloid beta (A beta) are key features of Alzheimer's disease (AD) pathogenesis, but the molecular events controlling this process are not known in detail. In vivo, A beta aggregation and plaque formation occur in the interstitial fluid of the brain extracellular matrix. This fluid communicates freely with cerebrospinal fluid (CSF). Here, we examined the effect of human CSF on A beta aggregation kinetics in relation to AD diagnosis and carrier status of the apolipoprotein E (APOE) epsilon 4 allele, the main genetic risk factor for sporadic AD. The aggregation of A beta was inhibited in the presence of CSF and, surprisingly, the effect was more pronounced in APOE epsilon 4 carriers. However, by fractionation of CSF using size exclusion chromatography, it became evident that it was not the ApoE protein itself that conveyed the inhibition, since the retarding species eluted at lower volume, corresponding to a much higher molecular weight, than ApoE monomers. Cholesterol quantification and immunoblotting identified high-density lipoprotein particles in the retarding fractions, indicating that such particles may be responsible for the inhibition. These results add information to the yet unresolved puzzle on how the risk factor of APOE epsilon 4 functions in AD pathogenesis. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine (hsv//eng)

Keyword

Apolipoprotein epsilon 4
High density lipoproteins
Amyloid-beta
Aggregation
Thioflavin T
Neurofibrillary tangles
Kinetics
Inhibition
Cholesterol
apolipoprotein-e
density-lipoprotein
type-4 allele
in-vitro
protein
association
peptide
binding
subpopulations
purification
Neurosciences & Neurology

Publication and Content Type

ref (subject category)
art (subject category)

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