• Associations of inner retinal layers with risk of incident dementia: An individual participant data analysis of four prospective cohort studies 

      van der Heide, Frank C. T.; Khawaja, Anthony; Berendschot, Tos T. J. M.; Littlejohns, Thomas J.; Kuźma, Elżbieta; Luben, Robert; Patel, Praveen J.; Foster, Paul J.; Bertelsen, Geir; von Hanno, Therese; Johnsen, Bente; Schirmer, Henrik; Rebouças, Sara C. L.; Grasset, Leslie; Delcourt, Cécile; Helmer, Catherine; Stehouwer, Coen D. A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-08)
      INTRODUCTION - Our main objective was to investigate whether retinal neurodegeneration, estimated from lower thickness of inner retinal layers, was associated with incident all-cause dementia and Alzheimer's disease (AD).<p> <p>METHODS - We performed an individual participant data meta-analysis using unpublished data from four prospective cohort studies with a total of 69,955 participants (n = ...
    • Vitamin D and cognitive function: A Mendelian randomisation study 

      Maddock, Jane; Zhou, Ang; Cavadino, Alana; Kuźma, Elżbieta; Bao, Yanchun; Smart, Melissa C.; Saum, Kai-Uwe; Schöttker, Ben; Engmann, Jorgen; Kjærgaard, Marie; Karhunen, Ville; Zhan, Yiqiang; Lehtimäki, Terho; Rovio, Suvi P.; Byberg, Liisa; Lahti, Jari; Marques-Vidal, Pedro; Sen, Abhijit; Perna, Laura; Schirmer, Henrik; Singh-Manoux, Archana; Auvinen, Juha; Hutri-Kähönen, Nina; Kähönen, Mika; Kilander, Lena; Räikkönen, Katri; Melhus, Håkan; Ingelsson, Erik; Guessous, Idris; Petrovic, Katja E.; Schmidt, Helena; Schmidt, Reinhold; Vollenweider, Peter; Lind, Lars; Eriksson, Johan G.; Michaëlsson, Karl; Raitakari, Olli T; Hägg, Sara; Pedersen, Nancy L.; Herzig, Karl-Heinz; Järvelin, Marjo-Riitta; Veijola, Juha; Kivimäki, Mika; Jorde, Rolf; Brenner, Hermann; Kumari, Meena; Power, Chris; Llewellyn, David J.; Hyppönen, Elina (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-16)
      The causal nature of the association between hypovitaminosis D and poor cognitive function in mid- to later-life is uncertain. Using a Mendelian randomisation(MR) approach, we examined the causal relationship between 25(OH)D and cognitive function. Data came from 172,349 participants from 17 cohorts. DHCR7(rs12785878), CYP2R1 rs12794714) and their combined synthesis score were chosen to proxy 25(OH)D. ...