In vivo nanomechanical imaging of blood-vessel tissues directly in living mammals using atomic force microscopy

In vivo nanomechanical imaging of blood-vessel tissues directly in living mammals using atomic force microscopy
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使用原子力显微镜直接对活体哺乳动物的血管组织进行体内纳米机械成像

DOI:
10.1063/1.3167546
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发表时间:
2009-07
影响因子:
4
通讯作者:
Mao, Youdong
Mao, Youdong
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Han,Dong;Han, Li;Sun, Quanmei;Wang, Xiufeng;Jiang, Lei;Ouyang, Qi;Mao, Youdong

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原子力显微镜(AFM)在活体哺乳动物中很难实现,但对于了解生物体中天然组织的机械特性是必要的。在这里,我们报道了利用原子力显微镜结合外科手术直接对活体哺乳动物的血管组织进行纳米机械成像。血管的纳米力学异质性在体内相同组织的不同微环境中被观察到。该方法被进一步用于实时测量药物诱导的血管扩张和收缩过程中的反作用力纳米力学变化,展示了在表征天然组织的体内纳米力学动力学方面的潜在潜力。
Atomic force microscopy (AFM) is difficult to achieve in living mammals but is necessary for understanding mechanical properties of tissues in their native form in organisms. Here we report in vivo nanomechanical imaging of blood-vessel tissues directly in living mammalians by AFM combined with surgical operations. Nanomechanical heterogeneity of blood vessels is observed across the diverse microenvironments of the same tissues in vivo. This method is further used to measure the counteractive nanomechanical changes in real time during drug-induced vasodilation and vasoconstriction in vivo, demonstrating appealing potential in characterization of in vivo nanomechanical dynamics of native tissues.
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