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Träfflista för sökning "WFRF:(Mirza Schreiber Nazanin) "

Sökning: WFRF:(Mirza Schreiber Nazanin)

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1.
  • Gergei, Ingrid, et al. (författare)
  • GWAS META-analysis followed by MENDELIAN randomisation revealed potential control mechanisms for circulating α-klotho levels.
  • 2022
  • Ingår i: Human molecular genetics. - : Oxford University Press (OUP). - 1460-2083 .- 0964-6906. ; 31:5
  • Tidskriftsartikel (refereegranskat)abstract
    • The protein α-Klotho acts as transmembrane the co-receptor for fibroblast growth factor 23 (FGF-23) and is a key regulator of phosphate homeostasis. However, α-Klotho also exists in a circulating form, with pleiotropic, but incompletely understood functions and regulation. Therefore, we undertook a GWAS meta-analysis followed by Mendelian randomisation (MR) of circulating α-Klotho levels.Plasma α-Klotho levels were measured by ELISA in the LURIC and ALSPAC (mothers) cohorts, followed by a GWAS meta-analysis in 4376 individuals across the two cohorts.Six signals at five loci were associated with circulating α-Klotho levels at genome-wide significance (p < 5 × 10-8), namely ABO, KL, FGFR1, and two post-translational modification genes, B4GALNT3 and CHST9. Together, these loci explained > 9% of the variation in circulating α-Klotho levels. MR analyses revealed no causal relationships between α-Klotho and renal function, FGF-23-dependent factors such as vitamin D and phosphate levels, or bone mineral density. The screening for genetic correlations with other phenotypes, followed by targeted MR suggested causal effects of liability of Crohn's disease risk [IVW beta = 0.059 (95% CI 0.026, 0.093)] and low-density lipoprotein cholesterol (LDL-C) levels [-0.198, (-0.332, -0.063)] on α-Klotho.Our GWAS findings suggest that two enzymes involved in post-translational modification, B4GALNT3 and CHST9, contribute to genetic influences on α-Klotho levels, presumably by affecting protein turnover and stability. Subsequent evidence from MR analyses on α-Klotho levels suggest regulation by mechanisms besides phosphate-homeostasis and raise the possibility of cross-talk with FGF19- and FGF21-dependent pathways, respectively.
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2.
  • Satizabal, Claudia L., et al. (författare)
  • Genetic architecture of subcortical brain structures in 38,851 individuals
  • 2019
  • Ingår i: Nature Genetics. - : Nature Publishing Group. - 1061-4036 .- 1546-1718. ; 51:11, s. 1624-
  • Tidskriftsartikel (refereegranskat)abstract
    • Subcortical brain structures are integral to motion, consciousness, emotions and learning. We identified common genetic variation related to the volumes of the nucleus accumbens, amygdala, brainstem, caudate nucleus, globus pallidus, putamen and thalamus, using genome-wide association analyses in almost 40,000 individuals from CHARGE, ENIGMA and UK Biobank. We show that variability in subcortical volumes is heritable, and identify 48 significantly associated loci (40 novel at the time of analysis). Annotation of these loci by utilizing gene expression, methylation and neuropathological data identified 199 genes putatively implicated in neurodevelopment, synaptic signaling, axonal transport, apoptosis, inflammation/infection and susceptibility to neurological disorders. This set of genes is significantly enriched for Drosophila orthologs associated with neurodevelopmental phenotypes, suggesting evolutionarily conserved mechanisms. Our findings uncover novel biology and potential drug targets underlying brain development and disease.
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