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Träfflista för sökning "WFRF:(Öhrfelt Annika 1973 ) srt2:(2010-2014);srt2:(2011)"

Sökning: WFRF:(Öhrfelt Annika 1973 ) > (2010-2014) > (2011)

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1.
  • Öhrfelt Olsson, Annika, 1973, et al. (författare)
  • Identification of Novel α-Synuclein Isoforms in Human Brain Tissue by using an Online NanoLC-ESI-FTICR-MS Method.
  • 2011
  • Ingår i: Neurochemical research. - : Springer Science and Business Media LLC. - 1573-6903 .- 0364-3190. ; 36:11
  • Tidskriftsartikel (refereegranskat)abstract
    • Parkinson's disease (PD) and Dementia with Lewy bodies (DLB) are neurodegenerative diseases that are characterized by intra-neuronal inclusions of Lewy bodies in distinct brain regions. These inclusions consist mainly of aggregated α-synuclein (α-syn) protein. The present study used immunoprecipitation combined with nanoflow liquid chromatography (LC) coupled to high resolution electrospray ionization Fourier transform ion cyclotron resonance tandem mass spectrometry (ESI-FTICR-MS/MS) to determine known and novel isoforms of α-syn in brain tissue homogenates. N-terminally acetylated full-length α-syn (Ac-α-syn(1-140)) and two N-terminally acetylated C-terminally truncated forms of α-syn (Ac-α-syn(1-139) and Ac-α-syn(1-103)) were found. The different forms of α-syn were further studied by Western blotting in brain tissue homogenates from the temporal cortex Brodmann area 36 (BA36) and the dorsolateral prefrontal cortex BA9 derived from controls, patients with DLB and PD with dementia (PDD). Quantification of α-syn in each brain tissue fraction was performed using a novel enzyme-linked immunosorbent assay (ELISA).
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2.
  • Öhrfelt Olsson, Annika, 1973, et al. (författare)
  • Screening for new biomarkers for subcortical vascular dementia and Alzheimer's disease
  • 2011
  • Ingår i: Dementia and Geriatric Cognitive Disorders Extra. - : S. Karger AG. - 1664-5464. ; 1:1, s. 31-42
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Novel biomarkers are important for identifying as well as differentiating subcortical vascular dementia (SVD) and Alzheimer’s disease (AD) at an early stage in the disease process. Methods: In two independent cohorts, a multiplex immunoassay was utilized to analyze 90 proteins in cerebrospinal fluid (CSF) samples from dementia patients and patients at risk of developing dementia (mild cognitive impairment). Results: The levels of several CSF proteins were increased in SVD and its incipient state, and in moderate-to-severe AD compared with the control group. In contrast, some CSF proteins were altered in AD, but not in SVD. The levels of heart-type fatty acid binding protein (H-FABP) were consistently increased in all groups with dementia but only in some of their incipient states. Conclusions: In summary, these results support the notion that SVD and AD are driven by different pathophysiological mechanisms reflected in the CSF protein profile and that H-FABP in CSF is a general marker of neurodegeneration
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