Distribution of type I collagen morphologies in bone: relation to estrogen depletion.

Distribution of type I collagen morphologies in bone: relation to estrogen depletion.
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DOI:
10.1016/j.bone.2009.11.020
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发表时间:
2010-05
期刊:
影响因子:
4.1
通讯作者:
Holl, Mark M. Banaszak
Holl, Mark M. Banaszak
中科院分区:
医学2区
文献类型:
--
作者:
Wallace, Joseph M.;Erickson, Blake;Les, Clifford M.;Orr, Bradford G.;Holl, Mark M. Banaszak

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骨骼是一种由自然进化而来的惊人材料,可以优雅地平衡身体的结构和代谢需求。骨骼健康是整体健康的一个组成部分,但我们对健康骨骼的超微结构缺乏了解,使我们无法了解疾病如何影响这种生物材料的纳米级特性。在这里,我们表明,可以使用原子力显微镜(AFM)的I型胶原纤维形态的分布的定量评估。我们证明,正常骨含有胶原纤维形态的分布,这种分布的变化可以直接与疾病状态。具体而言,通过监测假手术和雌激素耗竭绵羊的胶原纤维分布的变化,我们已经证明了检测雌激素缺乏诱导的骨中I型胶原变化的能力。这一发现为骨作为一种组织的超微结构和物质结构在骨疾病中的作用提供了新的见解。这一观察提供了一种急需的体外程序的可能性,以补充目前用于诊断骨质疏松症和其他骨骼疾病的方法。
Bone is an amazing material evolved by nature to elegantly balance structural and metabolic needs in the body. Bone health is an integral part of overall health, but our lack of understanding of the ultrastructure of healthy bone precludes us from knowing how disease may impact nanoscale properties in this biological material. Here, we show that quantitative assessments of a distribution of Type I collagen fibril morphologies can be made using atomic force microscopy (AFM). We demonstrate that normal bone contains a distribution of collagen fibril morphologies and that changes in this distribution can be directly related to disease state. Specifically, by monitoring changes in the collagen fibril distribution of sham-operated and estrogen-depleted sheep, we have shown the ability to detect estrogen-deficiency-induced changes in Type I collagen in bone. This discovery provides new insight into the ultrastructure of bone as a tissue and the role of material structure in bone disease. The observation offers the possibility of a much-needed in vitro procedure to complement the current methods used to diagnose osteoporosis and other bone disease.
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