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在双相情感障碍中评估omega-3和omega-6多不和脂肪酸之间的因果关系:一个双样双向孟德尔随机化研究
Min Zhang1, Xinwei Li1, Lin Dong1
1Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun 130021, China. yuqiong@jlu.edu.cn.
Food & function
|June 22, 2023
概括
更高的欧米茄-3脂肪酸摄入量可能会降低双相情感障碍的风险,而高的欧米茄-6与欧米茄-3比率会增加其. 这项研究使用遗传数据来证实这些双相情感障碍 (BD) 预防策略的联系.
科学领域:
- 营养精神病学 营养精神病学
- 遗传流行病学遗传流行病学
- 代谢健康 代谢健康
背景情况:
- 欧米茄-3和欧米茄-6脂肪酸在大脑功能中起着至关重要的作用.
- 脂肪酸摄入的不平衡,特别是高的omega-6和omega-3比率,被假定会导致神经精神疾病,如双相情感障碍 (BD).
- 以前的观察性研究表明存在联系,但因果关系仍然未被证明.
研究的目的:
- 研究omega-3脂肪酸,omega-6脂肪酸和omega-6:omega-3比率与双相情感障碍 (BD) 风险之间的潜在因果关系.
- 利用门德尔的随机化 (MR) 来评估这些关联,利用遗传变异作为工具变量.
主要方法:
- 利用英国生物库的脂肪酸相关遗传变异数据和EBI数据库的BD数据.
- 确定了与脂肪酸相关的单核酸多态 (SNP) 作为符合严格统计标准的仪器变量 (IVs) (P < 5 × 10−8,LD R2 > 0.01,kb < 10,000).
- 采用逆方差加权 (IVW) 方法作为主要的分析方法,并补充了灵敏度分析.
主要成果:
- 较高的遗传预测omega-3水平与双相情感障碍的风险降低有关 (OR = 0.884,P < 0.05).
- 增加的omega-6:omega-3比率与双相情感障碍的风险增加显著相关 (OR = 1.172,P < 0.05).
- 在omega-6脂肪酸水平和双相情感障碍风险之间没有发现显著的因果关系.
结论:
- 这些发现支持omega-3脂肪酸和omega-6:omega-3比率在双相情感障碍的风险中起因作用.
- 维持充足的欧米茄-3摄入量和均衡的欧米茄-6:欧米茄-3比率可能对预防BD很重要.
- 血清omega-3和omega-6:omega-3比率较低的个体需要注意他们的BD风险.
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