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Sökning: WFRF:(Vilor Tejedor N) > (2020)

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1.
  • Mila-Aloma, M., et al. (författare)
  • Amyloid beta, tau, synaptic, neurodegeneration, and glial biomarkers in the preclinical stage of the Alzheimer's continuum
  • 2020
  • Ingår i: Alzheimers & Dementia. - : Wiley. - 1552-5260 .- 1552-5279. ; 16:10, s. 1358-1371
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: The biological pathways involved in the preclinical stage of the Alzheimer's continuum are not well understood. Methods: We used NeuroToolKit and Elecsys (R) immunoassays to measure cerebrospinal fluid (CSF) amyloid-beta (A beta)42, A beta 40, phosphorylated tau (p-tau), total tau (t-tau), neurofilament light (NfL), neurogranin, sTREM2, YKL40, GFAP, IL6, S100, and alpha-synuclein in cognitively unimpaired participants of the ALFA+ study, many within the Alzheimer's continuum. Results: CSF t-tau, p-tau, and neurogranin increase throughout aging only in A beta-positive individuals, whereas NfL and glial biomarkers increase with aging regardless of A beta status. We modelled biomarker changes as a function of CSF A beta 42/40, p-tau and p-tau/A beta 42 as proxies of disease progression. The first change observed in the Alzheimer's continuum was a decrease in the CSF A4 beta 42/40 ratio. This is followed by a steep increase in CSF p-tau; t-tau; neurogranin; and, to a lesser extent, in NfL and glial biomarkers. Discussion: Multiple biological pathways are altered and could be targeted very early in the Alzheimer's continuum.
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2.
  • Vogelezang, Suzanne, et al. (författare)
  • Novel loci for childhood body mass index and shared heritability with adult cardiometabolic traits.
  • 2020
  • Ingår i: PLoS genetics. - : Public Library of Science (PLoS). - 1553-7404. ; 16:10
  • Tidskriftsartikel (refereegranskat)abstract
    • The genetic background of childhood body mass index (BMI), and the extent to which the well-known associations of childhood BMI with adult diseases are explained by shared genetic factors, are largely unknown. We performed a genome-wide association study meta-analysis of BMI in 61,111 children aged between 2 and 10 years. Twenty-five independent loci reached genome-wide significance in the combined discovery and replication analyses. Two of these, located near NEDD4L and SLC45A3, have not previously been reported in relation to either childhood or adult BMI. Positive genetic correlations of childhood BMI with birth weight and adult BMI, waist-to-hip ratio, diastolic blood pressure and type 2 diabetes were detected (Rg ranging from 0.11 to 0.76, P-values <0.002). A negative genetic correlation of childhood BMI with age at menarche was observed. Our results suggest that the biological processes underlying childhood BMI largely, but not completely, overlap with those underlying adult BMI. The well-known observational associations of BMI in childhood with cardio-metabolic diseases in adulthood may reflect partial genetic overlap, but in light of previous evidence, it is also likely that they are explained through phenotypic continuity of BMI from childhood into adulthood.
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