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Sökning: WFRF:(Liepelt Inga)

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1.
  • Gispert, Suzana, et al. (författare)
  • The modulation of Amyotrophic Lateral Sclerosis risk by Ataxin-2 intermediate polyglutamine expansions is a specific effect
  • 2012
  • Ingår i: Neurobiology of Disease. - : Elsevier. - 0969-9961 .- 1095-953X. ; 45:1, s. 356-361
  • Tidskriftsartikel (refereegranskat)abstract
    • Full expansions of the polyglutamine domain (polyQ >= 34) within the polysome-associated protein ataxin-2 (ATXN2) are the cause of a multi-system neurodegenerative disorder, which usually presents as a Spino-Cerebellar Ataxia and is therefore known as SCA2, but may rarely manifest as Levodopa-responsive Parkinson syndrome or as motor neuron disease. Intermediate expansions (27 <= polyQ <= 33) were reported to modify the risk of Amyotrophic Lateral Sclerosis (ALS). We have now tested the reproducibility and the specificity of this observation. In 559 independent ALS patients from Central Europe, the association of ATXN2 expansions (30 <= polyQ <= 35) with ALS was highly significant. The study of 1490 patients with Parkinson's disease (PD) showed an enrichment of ATXN2 alleles 27/28 in a subgroup with familial cases, but the overall risk of sporadic PD was unchanged. No association was found between polyQ expansions in Ataxin-3 (ATXN3) and ALS risk. These data indicate a specific interaction between ATXN2 expansions and the causes of ALS, possibly through altered RNA-processing as a common pathogenic factor. (C) 2011 Elsevier Inc. All rights reserved.
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2.
  • Lerche, Stefanie, et al. (författare)
  • Cognitive impairment in Glucocerebrosidase (GBA)-associated PD: Not primarily associated with cerebrospinal fluid Abeta and Tau profiles.
  • 2017
  • Ingår i: Movement disorders : official journal of the Movement Disorder Society. - 1531-8257. ; 32:12
  • Tidskriftsartikel (refereegranskat)abstract
    • A proportion of idiopathic Parkinson's disease patients (PDidiopathic ) with dementia show altered CSF profiles of amyloid β (Aβ) and Tau. PD patients with Glucocerebrosidase (GBA) mutations (PDGBA ) present with even more cognitive decline than seen in PDidiopathic .The objective of this study was to evaluate whether CSF profiles of Aβ and tau are associated with the prominent cognitive impairment in PDGBA .CSF levels of Aβ1-42 , t-Tau, p-Tau, and total alpha-synuclein were assessed in 479 participants (50 PDGBA , 308 PDidiopathic , 121 healthy controls).Older age was associated with cognitive impairment in PDGBA and PDidiopathic . Despite prominent cognitive impairment, PDGBA showed similar CSF levels of Aβ1-42 , t-Tau, and p-Tau as seen in healthy controls. In contrast, lower levels of Aβ1-42 and higher levels of t-Tau and p-Tau were associated with worse cognitive performance in PDidiopathic .The prominent cognitive impairment in PDGBA seems not primarily associated with Aβ and Tau profiles in CSF. © 2017 International Parkinson and Movement Disorder Society.
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