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Vitamin E Intake Is Associated with Lower Brain Volume in Haptoglobin 1-1 Elderly with Type 2 Diabetes.

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  • Additional Information
    • Source:
      Publisher: IOS Press Country of Publication: Netherlands NLM ID: 9814863 Publication Model: Print Cited Medium: Internet ISSN: 1875-8908 (Electronic) Linking ISSN: 13872877 NLM ISO Abbreviation: J Alzheimers Dis Subsets: MEDLINE
    • Publication Information:
      Original Publication: Amsterdam ; Washington : IOS Press, c1998-
    • Subject Terms:
    • Abstract:
      Backgrounds: The efficacy of vitamin E in prevention of diabetes-related complications differs by Haptoglobin (Hp) genotype.
      Objective: To examine the role of Hp genotype in the relationship of vitamin E intake with brain volume in cognitively normal elderly patients with type 2 diabetes.
      Methods: Brain volumes for the superior, middle, and inferior frontal gyri and for the middle temporal gyrus were generated from structural T1 MRI in 181 study participants (Hp 1-1: n = 24, Hp 2-1: n = 77, Hp 2-2: n = 80). Daily vitamin E intake was assessed using the Food Frequency Questionnaire. Analyses of covariance, controlling for demographic and cardiovascular variables was used to evaluate whether the association of daily vitamin E intake with brain volume was modified by Hp genotype.
      Results: Average age was 70.8 (SD = 4.2) with 40% females, and mean Mini-Mental State Examination score of 28.17 (SD = 1.90). A significant interaction was found between vitamin E intake and Hp genotype in inferior frontal gyrus' volume; p = 0.0108. For every 1 microgram increase in vitamin E intake, the volume of the inferior frontal gyrus decreased by 0.955% for Hp 1-1 (p = 0.0348), increased by 0.429% for Hp 2-1 (p = 0.0457), and by 0.077% for Hp 2-2 (p = 0.6318). There were no significant interactions between vitamin E intake and Hp genotype for the middle (p = 0.6011) and superior (p = 0.2025) frontal gyri or for the middle temporal gyrus (p = 0.503).
      Conclusions: The effect of dietary vitamin E on the brain may differ by Hp genotype. Studies examining the impact of vitamin E on brain-related outcomes should consider Hp genotype.
    • Grant Information:
      R01 AG034087 United States AG NIA NIH HHS; P50 AG005138 United States AG NIA NIH HHS
    • Contributed Indexing:
      Keywords: Brain volume*; diabetes*; haptoglobin genotype*; vitamin E*
    • Accession Number:
      0 (Haptoglobins)
      1406-18-4 (Vitamin E)
    • Publication Date:
      Date Created: 20200218 Date Completed: 20210805 Latest Revision: 20210805
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