Lancet Psychiatry:真假?血浆中脂肪酸浓度居然与精神分裂症有关!

2022-06-23 MedSci原创 MedSci原创

长链ω-3和长链ω-6脂肪酸浓度与较低的精神分裂症风险有关。

尽管研究表明,在精神分裂症患者中,ω-3和ω-6脂肪酸的浓度较低,但补充脂肪酸的有益效果的证据却很少。为了确定ω-3和ω-6脂肪酸的浓度是否与精神分裂症有因果关系,来自英国布里斯托医学院精神健康中心的专家开展了相关研究,结果发表在Lancet Psychiatry杂志上。

研究人员使用公开的非识别的汇总级数据开展了一项双样本的孟德尔随机化研究。利用脂肪酸浓度和精神分裂症的全基因组关联研究(GWASs)的结果,用反方差加权的双样本孟德尔随机化方法评估了暴露-结果的关系。

加权中位数、加权模式和孟德尔随机化Egger回归方法被用作敏感性分析。为了解决潜在的机制问题,在FADS基因簇和ELOVL2基因位点内使用单一工具进行了进一步的分析。此外,多变量孟德尔随机化被用来估计独立于欧米伽-6脂肪酸、脂蛋白(即HDL和LDL)和甘油三酯,ω-3对精神分裂症的直接影响。

孟德尔随机化分析表明,长链ω-3和ω-6脂肪酸的浓度与精神分裂症风险降低17%有关(二十二碳六烯酸:OR=0.83[95%CI 0.75-0.92])。相比之下,短链ω-3和短链ω-6脂肪酸与精神分裂症的风险增加有关(α-亚麻酸:OR=1.07[95% CI 0.98-1.18])。

敏感性分析和FADS单SNP分析的效果是一致的,表明长链ω-3和长链ω-6脂肪酸浓度与较低的精神分裂症风险有关,而短链ω-3和短链ω-6脂肪酸浓度与精神分裂症风险的增加有关。多变量孟德尔随机化表明,二十二碳六烯酸对精神分裂症的保护作用在以其他脂质为条件后仍然存在(OR 0.84 [95% CI 0.71-1.01])。

综上,长链ω-3和长链ω-6脂肪酸浓度与较低的精神分裂症风险有关。表明精神分裂症患者可能难以将短链多不饱和脂肪酸转化为长链多不饱和脂肪酸。需要进一步研究以确定补充长链多不饱和脂肪酸或丰富饮食是否有助于预防精神分裂症的发生。

参考文献:

Associations between plasma fatty acid concentrations and schizophrenia: a two-sample Mendelian randomisation study. https://doi.org/10.1016/S2215-0366(21)00286-8

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    2022-07-02 海阔天空Sin

    👍

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    2022-01-05 howi
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    2021-11-16 1207866fm50(暂无昵称)

    谢谢分享

    0

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