NEJM:深海n-3脂肪酸能预防心血管疾病和癌症吗?

2019-01-03 xing.T MedSci原创

由此可见,与安慰剂相比,补充n-3脂肪酸不会导致主要心血管事件或癌症的发生率降低。

在一些观察性研究中,摄入更多的海洋n-3(也称为omega-3)脂肪酸与降低血管疾病和癌症的风险有关。是否补充n-3脂肪酸在一般人群中对这些终点具有常规降低风险的作用尚不清楚。

近日,顶级医学期刊NEJM上发表了一篇研究文章,研究人员进行了一项随机、安慰剂对照试验,采用2×2因子设计,服用维生素D3(每天2000 IU)和海洋n-3脂肪酸(每天1g)用于美国50岁以上男性和55岁以上女性血管疾病和癌症的一级预防中。该研究的主要终点是主要心血管事件(心肌梗塞、卒中或心血管原因死亡的复合事件)和任何​​类型的侵袭性癌症。次要终点包括复合心血管终点的单个组成部分、复合终点加冠状动脉血运重建(心血管事件的扩展复合事件)、部位特异性癌症和癌症死亡。此外,还评估了治疗的安全性。该研究报道了n-3脂肪酸与安慰剂的比较结果。

该研究共有25871名参与者,包括5106名黑人参与者,接受了随机化分组。在中位随访5.3年期间,n-3组386名参与者和安慰剂组419名患者发生重大心血管事件(风险比为0.92; 95%置信区间[CI]为0.80至1.06; P=0.24)。在n-3组的820名参与者和安慰剂组的797名患者中诊断为侵袭性癌症(风险比为1.03; 95%CI为0.93-1.13; P=0.56)。在关键次要终点的分析中,风险比如下:对于心血管事件的扩展复合终点为0.93(95%CI为0.82至1.04); 所有心肌梗死为0.72(95%CI为0.59至0.90); 所有类型卒中为1.04(95%CI为0.83-1.31); 因心血管原因死亡为0.96(95%CI为0.76至1.21); 并且因癌症死亡(341人死于癌症)为0.97(95%CI为0.79至1.20)。在分析任何原因导致的死亡(总共978例死亡)时,风险比为1.02(95%CI为0.90至1.15)。没有观察到出血或其他严重不良事件的过度风险。

由此可见,与安慰剂相比,补充n-3脂肪酸不会导致主要心血管事件或癌症的发生率降低。

原始出处:

JoAnn E. Manson,et al.Marine n−3 Fatty Acids and Prevention of Cardiovascular Disease and Cancer.NEJM.2018.https://www.nejm.org/doi/full/10.1056/NEJMoa1811403

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    2019-01-03 topnew

    深海n-3脂肪酸指什么?

    0

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    2019-01-03 明月清辉

    谢谢分享,学习了

    0