DHA-Enriched Fish Oil Ameliorates Deficits in Cognition Associated with Menopause and the APOE4 Genotype in Rodents.

DHA-Enriched Fish Oil Ameliorates Deficits in Cognition Associated with Menopause and the APOE4 Genotype in Rodents.
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DOI:
10.3390/nu14091698
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发表时间:
2022-04-19
期刊:
影响因子:
5.9
通讯作者:
Minihane, Anne-Marie
Minihane, Anne-Marie
中科院分区:
医学2区
文献类型:
--
作者:
Pontifex, Matthew G.;Martinsen, Anneloes;Saleh, Rasha N. M.;Harden, Glenn;Fox, Chris;Muller, Michael;Vauzour, David;Minihane, Anne-Marie

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与男性相比,女性 APOE4 携带者更容易患阿尔茨海默病 (AD),这可能部分归因于更年期。我们之前报道过,更年期和 APOE4 的结合会导致认知和神经功能缺陷加剧,这与大脑 DHA 和 DHA:AA 比率降低有关。在这里,我们探讨了富含 DHA 的鱼油 (FO) 补充剂是否可以减轻这些风险因素的有害影响。虽然富含 DHA 的鱼油改善了 APOE4 VCD(4-乙烯基环己烯二环氧化合物)治疗小鼠的识别记忆 (NOR) (p < 0.05),但没有观察到空间工作记忆 (Y 迷宫) 的变化。补充 FO 可以增加大脑中的 DHA 和神经酸以及 DHA:AA 比例。关键生物能量和血脑屏障相关基因和蛋白质的反应为这些行为发现提供了机制见解,接受鱼油补​​充剂的 APOE4 小鼠中 BDNF 蛋白质浓度增加,异常 Erβ、Cldn1 和 Glut-5 表达减轻 (p < 0.05)。总之,补充生理相关剂量的富含 DHA 的鱼油似乎可以预防更年期的有害影响,特别是对于“高危”APOE4 女性携带者。
Female APOE4 carriers have a greater predisposition to developing Alzheimer’s disease (AD) compared to their male counterparts, which may partly be attributed to menopause. We previously reported that a combination of menopause and APOE4 led to an exacerbation of cognitive and neurological deficits, which were associated with reduced brain DHA and DHA:AA ratio. Here, we explored whether DHA-enriched fish oil (FO) supplementation mitigated the detrimental impact of these risk factors. Whilst DHA-enriched fish oil improved recognition memory (NOR) in APOE4 VCD (4-vinylcyclohexene diepoxide)-treated mice (p < 0.05), no change in spatial working memory (Y-maze) was observed. FO supplementation increased brain DHA and nervonic acid and the DHA:AA ratio. The response of key bioenergetic and blood–brain barrier related genes and proteins provided mechanistic insights into these behavioural findings, with increased BDNF protein concentration as well as mitigation of aberrant Erβ, Cldn1 and Glut-5 expression in APOE4 mice receiving fish oil supplementation (p < 0.05). In conclusion, supplementation with a physiologically relevant dose of DHA-enriched fish oil appears to offer protection against the detrimental effects of menopause, particularly in “at-risk” APOE4 female carriers.
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