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饮食中适度增加锌可降低氧化应激和DNA损伤

2017-01-05 sunshine MedSci原创

近日来自UCSF Benioff儿童医院研究所(CHORI)的一项新研究表明每天摄入4毫克的额外锌有助于对抗感染和疾病,对细胞健康有深远的积极影响,而这个量的锌相当于将生物强化物如锌水稻和锌小麦加入到体弱、营养缺乏人群的饮食中。该研究首次提出在饮食中适度增加锌降低氧化应激和DNA损伤,其研究结果已发表于American Journal of Clinical Nutrition。 研究者认为

近日来自UCSF Benioff儿童医院研究所(CHORI)的一项新研究表明每天摄入4毫克的额外锌有助于对抗感染和疾病,对细胞健康有深远的积极影响,而这个量的锌相当于将生物强化物如锌水稻和锌小麦加入到体弱、营养缺乏人群的饮食中。该研究首次提出在饮食中适度增加锌降低氧化应激和DNA损伤,其研究结果已发表于American Journal of Clinical Nutrition


研究者认为只要在饮食中锌的少量增加会对机体代谢产生显著的影响,这些结果提出了衡量锌对健康的影响新策略,加强了食物可以改善全球微量营养缺乏的证据。

锌在身体中普遍存在,促进多种维持生命必须的功能。对维持最佳儿童生长和确保健康的免疫系统起着至关重要的作用。还有助于限制体内与慢性心血管疾病和癌症发病相关的炎症和氧化应激。

世界上许多地方,许多家庭食用精白米或高度精制的小麦或玉米粉,这些提供能量但不能提供足够的必须微量营养物质例如锌。锌是近3000种不同蛋白质的必要组成部分,并影响这些蛋白如何调节细胞。没有充足的锌,机体修复DNA磨损磨损的能力减弱。

在六周随机对照研究中,研究者通过计数DNA链断裂数检测锌对新陈代谢的影响。使用DNA损伤参数检测适量锌对健康生活的影响。这是一种新的方法,不同于常规使用的检测血液中的锌或用发育迟缓和发病率评价锌营养状况。

研究人员认为,这些结果与以食物为基础的解决方案的规划和评价相关,以减缓潜在饥饿和营养不良的影响。生物强化可成为可持续的长期解决锌缺乏的方法。

原始出处:


Sarah J Zyba, et al., A moderate increase in dietary zinc reduces DNA strand breaks in leukocytes and alters plasma proteins without changing plasma zinc concentrations. The American Journal of Clinical Nutrition, 2016.

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    2017-01-06 1e1a50a1m36(暂无匿称)

    以前没有引起足够的重视,现在知道了就要重视起来

    0

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    2017-01-06 三生有幸9135

    每天摄入4毫克的额外锌有助于对抗感染和疾病

    0

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    2017-01-05 乐奕11

    河北欢迎你

    0

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    2017-01-05 乐奕11

    厉害了!我的哥

    0

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