AGING CELL:衰老对肝脏微循环功能的影响

2018-09-13 海北 MedSci原创

过去几十年,社会经济和医疗条件的改善导致全球人口的年龄中位数相应增加。虽然许多研究描述了老化在不同器官和全身血管系统中的影响,但我们对老年人的肝功能和肝微循环状态还知之甚少。在最近的一项研究中,来自西班牙的研究人员在健康衰老的大鼠模型中表征老年肝脏的表型,特别关注了微循环功能和窦状隙中每种肝细胞类型的分子状态。此外,该研究的主要发现在年轻和年老的人类肝脏中得到验证。该研究结果表明,健康的衰老与肝脏

过去几十年,社会经济和医疗条件的改善导致全球人口的年龄中位数相应增加。虽然许多研究描述了老化在不同器官和全身血管系统中的影响,但我们对老年人的肝功能和肝微循环状态还知之甚少。
在最近的一项研究中,来自西班牙的研究人员在健康衰老的大鼠模型中表征老年肝脏的表型,特别关注了微循环功能和窦状隙中每种肝细胞类型的分子状态。此外,该研究的主要发现在年轻和年老的人类肝脏中得到验证。
该研究结果表明,健康的衰老与肝脏和窦状隙功能障碍有关,肝血管阻力升高,门静脉压力增加。这种血液动力学紊乱的潜在机制包括肝窦细胞中典型的分子变化和肝细胞功能的恶化。
以特定方式,肝窦内皮细胞呈现功能失调的表型,血管扩张剂合成减少,肝巨噬细胞表现出促炎状态,而肝星状细胞自发地显示活化的特征。研究人员也在老年人的肝脏中证实了这些标记物的主要变化。
因此,该研究首次表明,衰老伴有明显的肝窦状隙失调,表明窦状隙易受慢性或急性损伤的影响。

原始出处:
Raquel Maeso‐Díaz  et al. Effects of aging on liver microcirculatory function and sinusoidal phenotype. AGING CELL 2018, DOI: https://doi.org/10.1111/acel.12829

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    2018-09-23 维他命
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    2018-09-15 Jackie Li

    学习

    0

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    2018-09-14 一天没事干

    很好的学习机会

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    2018-09-13 龙胆草

    学习谢谢分享

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    2018-09-13 明月清辉

    谢谢分享,学习了

    0

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    2018-09-13 太阳系小猪

    衰老对身体的影响是方方面面的吧~又何止肝脏~

    0

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