JAHA:术前短期热量限制预防心脏手术后急性肾损伤!

2018-03-13 xing.T MedSci原创

尽管在24小时内观察到肌酐上升这一令人失望的结果,但在稍后的时间点和亚组分析可以观察到好处,表明急性肾损伤风险患者短期CR具有保护性价值。

急性肾损伤是心脏手术后常见的并发症,并伴有不良后果。虽然短期热量限制(CR)在急性肾损伤的啮齿类动物模型中被证明具有保护性作用,但同样的效果还没有在人类身上得到证实。

近日,心血管疾病领域权威杂志JAHA上发表了一篇研究文章,这项CR_KCH研究(术前的热量限制对心脏手术后肾功能的影响)是一项在接受心脏手术的患者中进行的随机对照试验。患者在术前7天被随机分配接受配方饮食包含每日能量需求的60%(CR组)或自由进食(对照组)。

在2012年4月16日至2015年2月5日期间共有82名患者被招募入研究。24小时后平均血清肌酐升高的主要终点在组间无显著差异(对照组:0mg/dL[−0.1至(+ 0.2)mg/dL];CR组:0mg/dL[−0.2至(+0.2)mg/dL];P=0.39)。CR阻止了48小时肌酐上升(对照组:+ 0.1mg/dL[0至0.3mg/dL];CR组:−0.1mg/dL[−0.2至(+ 0.1)mg/dL];P=0.03),最明显的效应是在男性患者以及体重指数>25的患者中可以观察到。这种益处持续到出院:在CR组平均肌酐下降0.1mg/dL(0.2至0mg/dL),而在对照组增加0.1mg/dL(0至0.3mg/dL;P=0.0006)。急性肾损伤的发生率降低了5.8%(CR组为41.7%,对照组为47.5%)。安全相关事件在组间没有差别。

尽管在24小时内观察到肌酐上升这一令人失望的结果,但在稍后的时间点和亚组分析可以观察到好处,表明急性肾损伤风险患者短期CR具有保护性价值。

原始出处:


Franziska Grundmann,et al. Preoperative Short‐Term Calorie Restriction for Prevention of Acute Kidney Injury After Cardiac Surgery: A Randomized, Controlled, Open‐Label, Pilot Trial, JAHA.2018. https://doi.org/10.1161/JAHA.117.008181

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    2018-03-15 zhaohui6731
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    2018-03-13 惠映实验室

    学习了.谢谢分享.

    0

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Cell Metabolism:不限制热量,按时吃饭就能减肥!

2017年12月Singh课题组在《Cell Metabolism》发表文章证明,不限制进食热量,但严格控制进食时间,亦可诱导有益的细胞自噬,改善小鼠衰老和肥胖相关新陈代谢指标。

J CLIN ENDOCR META:急性热量限制引起的代谢变化

急性热量限制以及随后的进食可以用于研究调节能量稳态的机制,这些机制与了解减肥的适应性反应有关。代谢组学能够测量数百种小分子代谢产物,前体,衍生物,以及降解物。其已经成为研究生理和疾病的有用工具,并被来自剑桥大学的研究人员用于研究急性热量限制的代谢反应。

Cell Metab:热量限制延长寿命,关键在调节线粒体网络

近期,“热量限制延长寿命”的观点频频进入公众视野,但这背后的生物学机制科学家们仍然不清楚。10月26日,Cell Metabolism上的一项研究发现,热量限制能够通过调控线粒体网络、重构过氧化物酶体从而延长寿命。