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Heart fatty acid binding protein and Aβ-associated Alzheimer's neurodegeneration

  • Author(s): Desikan, RS
  • Thompson, WK
  • Holland, D
  • Hess, CP
  • Brewer, JB
  • Zetterberg, H
  • Blennow, K
  • Andreassen, OA
  • McEvoy, LK
  • Hyman, BT
  • Dale, AM
  • et al.

Background: Epidemiological and molecular findings suggest a relationship between Alzheimer's disease (AD) and dyslipidemia, although the nature of this association is not well understood. Results: Using linear mixed effects models, we investigated the relationship between CSF levels of heart fatty acid binding protein (HFABP), a lipid binding protein involved with fatty acid metabolism and lipid transport, amyloid-β (Aβ), phospho-tau, and longitudinal MRI-based measures of brain atrophy among 295 non-demented and demented older individuals. Across all participants, we found a significant association of CSF HFABP with longitudinal atrophy of the entorhinal cortex and other AD-vulnerable neuroanatomic regions. However, we found that the relationship between CSF HABP and brain atrophy was significant only among those with low CSF Aβ1-42and occurred irrespective of phospho-tau181pstatus. Conclusions: Our findings indicate that Aβ-associated volume loss occurs in the presence of elevated HFABP irrespective of phospho-tau. This implicates a potentially important role for fatty acid binding proteins in Alzheimer's disease neurodegeneration. © 2013 Desikan et al.; licensee BioMed Central Ltd.

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