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Sökning: WFRF:(Pedersen Kenn Freddy)

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1.
  • Alves, Guido, et al. (författare)
  • Cerebrospinal fluid amyloid-β and phenotypic heterogeneity in de novo Parkinson's disease.
  • 2013
  • Ingår i: Journal of neurology, neurosurgery, and psychiatry. - 1468-330X. ; 84:5, s. 537-43
  • Tidskriftsartikel (refereegranskat)abstract
    • In Parkinson's disease (PD), the motor presentation characterised by postural instability/gait difficulties (PIGD) heralds accelerated motor, functional and cognitive decline, as compared with the more benign tremor-dominant (TD) variant. This makes the PIGD complex an attractive target for the discovery of prognostic biomarkers in PD.
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2.
  • Førland, Marthe Gurine, et al. (författare)
  • Evolution of cerebrospinal fluid total α-synuclein in Parkinson's disease.
  • 2018
  • Ingår i: Parkinsonism & related disorders. - 1873-5126. ; 49, s. 4-8
  • Tidskriftsartikel (refereegranskat)abstract
    • Cerebrospinal fluid (CSF) total α-synuclein is considered a potential biomarker for Parkinson's disease (PD), but little is known about the evolution of this marker during the course of the disease. Our objective was to investigate whether CSF total α-synuclein concentrations change over time and are associated with motor and cognitive function in PD.CSF total α-synuclein concentrations were quantified in 56 longitudinally followed PD patients, 27 of whom provided CSF repeatedly 2 and/or 4 years later. Another 18 subjects were included as controls. The samples were analyzed using two independent, validated ELISA methods: our recently developed and validated in-house ELISA and a commercial kit from BioLegend.CSF total α-synuclein levels did not distinguish PD patients from controls, displayed no substantial changes during a period of up to 4 years, and did not predict subsequent motor or cognitive decline. These findings were consistent for both analytical methods.Our findings do not support the clinical utility of total α-synuclein as a single diagnostic or prognostic biomarker in PD.
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3.
  • Lunde, Kristin Aaser, et al. (författare)
  • Association of glucocerebrosidase polymorphisms and mutations with dementia in incident Parkinson's disease
  • 2018
  • Ingår i: NYPUM project. - : Elsevier. ; 14:10, s. 1293-1301
  • Tidskriftsartikel (refereegranskat)abstract
    • IntroductionBoth polymorphisms and mutations in glucocerebrosidase (GBA) may influence the development of dementia in patients with Parkinson's disease.MethodsFour hundred forty-two patients and 419 controls were followed for 7 years. Dementia was diagnosed using established criteria. Participants were analyzed for GBA genetic variants, including E326K, T369M, and L444P. Associations between GBA carrier status and dementia were assessed with Cox survival analysis.ResultsA total of 12.0% of patients with Parkinson's disease carried a GBA variant, and nearly half (22/53) of them progressed to dementia during follow-up. Carriers of deleterious GBA mutations (adjusted hazard ratio 3.81, 95% confidence interval 1.35 to 10.72; P = .011) or polymorphisms (adjusted hazard ratio 1.79; 95% confidence interval 1.07 to 3.00; P = .028) progressed to dementia more rapidly than noncarriers.DiscussionGBA variants are of great clinical relevance for the development of dementia in Parkinson's disease, especially due to the relatively higher frequency of these alleles compared with other risk alleles.
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