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Altered SPMs and age‐associated decrease in brain DHA in APOE4 female mice
Author(s) -
Martinsen Anneloes,
Tejera Noemi,
Vauzour David,
Harden Glenn,
Dick James,
Shinde Sujata,
Barden Anne,
Mori Trevor A.,
Minihane Anne Marie
Publication year - 2019
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fj.201900423r
Subject(s) - docosahexaenoic acid , eicosapentaenoic acid , apolipoprotein e , polyunsaturated fatty acid , phospholipid , fatty acid , genotype , medicine , biology , endocrinology , arachidonic acid , linoleic acid , chemistry , biochemistry , disease , gene , enzyme , membrane
An apolipoprotein E ( APOE ) 4 genotype is the most important, common genetic determinant for Alzheimer disease (AD), and female APOE4 carriers present with an increased risk compared with males. The study quantified cortical and hippocampal fatty acid and phospholipid profiles along with select eicosapentaenoic acid (EPA)‐ and docosahexaenoic acid (DHA)‐derived specialized proresolving mediators (SPMs) in 2‐, 9‐, and 18‐mo‐old APOE3 and APOE4 male and female mice. A 10% lower cortical DHA was evident in APOE4 females at 18 mo compared with 2 mo, with no significant decrease in APOE3 or APOE4 males. This decrease was associated with a reduction in DHA‐phosphatidylethanolamine. Older APOE4 females had a 15% higher oleic acid content compared with young mice. Although no sex* APOE genotype interactions were observed for SPMs expressed as a ratio of their parent compound, higher cortical 18R/S‐hydroxy‐5Z,8Z,11Z,14Z,16 E ‐EPA, resolvin D3, protectin D1, 10S,17S‐dihydroxy‐4Z,7Z,11 E ,13 E ,15Z,19Z‐DHA (10S,17S‐diHDHA), maresin 1, 17S‐hydroxy‐4Z,7Z,10Z,13Z,15 E ,19Z‐DHA, and 14S‐hydroxy‐4Z,7Z,10Z,12E,16Z,19Z‐DHA were evident in females, and lower cortical 17 R ‐resolvin D1, 10S,17S‐diHDHA, and 18‐HEPE in APOE4 . Our findings show a strong association between age, female sex, and an APOE4 genotype, with decreased cortical DHA and a number of SPMs, which together may contribute to the development of cognitive decline and AD pathology.—Martinsen, A., Tejera, N., Vauzour, D., Harden, G., Dick, J., Shinde, S., Barden, A., Mori, T. A., Minihane, A. M. Altered SPMs and age‐associated decrease in brain DHA in APOE4 female mice. FASEB J. 33, 10315–10326 (2019). www.fasebj.org