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Clin Nutrition: 膳食铜摄入量与新发高血压之间的存在明显关联

2022-02-25 MedSci原创 MedSci原创

高血压(hypertension)是指以体循环动脉血压(收缩压和/或舒张压)增高为主要特征(收缩压≥140毫米汞柱,舒张压≥90毫米汞柱),可伴有心、脑、肾等器官的功能或器质性损害的临床综合征。

高血压是全球心血管疾病 (CVD) 和全因死亡率的主要危险因素,在中国,估计有2.445亿成年人(占中国成年人口的 23.2%)患有高血压,这意味着心血管疾病是中国未来巨大的潜在医疗负担。因此,更好地了解更多可改变的高血压危险因素,如饮食和生活方式,对于预防管理高血压及其相关疾病至关重要。最近,微量矿物质与高血压风险之间的关联引起了极大的关注。铜是一种重要的矿物质营养素,它参与细胞代谢,并作为许多铜酶的组成部分发挥作用,是一种综合结构元素和调节剂。然而,铜含量升高可能会增加活性氧(ROS) 的产生,从而导致脂质、蛋白质、DNA 和其他颗粒的氧化。因此,铜的缺乏或过量都可能导致疾病或影响疾病的进展。本项研究旨在使用来自中国健康和营养调查(CHNS) 的数据调查膳食铜摄入量与新发高血压风险之间的关联。

中国健康与营养调查(CHNS) 共纳入12,245 名基线时无高血压的参与者。膳食摄入量通过连续 3 次 24 小时膳食回忆和家庭食物清单来测量。新发高血压定义为收缩压≥140 mmHg 和/或舒张压≥90 mmHg 或在随访期间由医生诊断或正在接受降压治疗。最后通过膳食铜的摄入量与新发高血压率之间相关性分析。

 

在 6.1 年的中位随访期间,4304 名参与者出现了新发高血压。总体而言,膳食铜摄入量与新发高血压之间的关联呈 U 形(P <0.001)。铜摄入量<1.57 mg/天的参与者新发高血压的风险随着膳食铜摄入量的增加而显着降低(每增加一个单位:HR,0.71;95% CI,0.57-0.88),超过1.57 mg/天后,新发高血压的概率会随着铜摄入量的增加而增加。铜摄入量≥1.57 mg/天的参与者的膳食铜摄入量(每增加一个单位:HR,1.09;95% CI:1.07-1.12)。

图:膳食铜摄入量与新发高血压之间关系

 

本项研究证实中国成年人的膳食铜摄入量与新发高血压呈 U 型关系,拐点约为 1.57 mg/天。本项研究结果强调了维持最佳铜摄入水平对高血压一级预防的重要性。

原始出处:

PanpanHe. Et al. U-shaped association between dietary copper intake and new-onset hypertension. Clinical Nutrition.2022.

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    2022-08-07 lmm397
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    2022-02-25 ms9000000796009798

    很好的文章

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    2022-02-25 zhaojie88

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