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骨质保护素可以抑制血管化,而不会影响LDLR的小鼠的动脉样硬化

Sean Morony¹, Yin Tintut, Zina Zhang

¹Department of Molecular Cellular and Integrative Physiology, University of California, Los Angeles, USA.

|January 4, 2008

概括

骨质保护蛋白 (OPG) 抑制了血管化,与其与动脉样硬化严重程度的关联相反. 这项对小鼠的研究表明,OPG治疗减少了化病变,这表明它对血管矿化起着保护作用.

科学领域:

心血管研究研究心血管研究
血管生物学血管生物学
生物医学科学生物医学科学

背景情况:

骨质保护素 (OPG) 在血管疾病中的作用仍在争论中.
观察性研究将较高的OPG水平与严重的冠状动脉疾病,动脉样硬化和血管化联系起来.
鼠类遗传和治疗研究表明,OPG可以保护血管化.

研究的目的:

调查骨质保护素 (OPG) 是否诱导或预防血管疾病.
阐明OPG在动脉样硬化和血管化的发展中的特定作用.

主要方法:

异源性饮食养的低密度脂蛋白受体缺陷 (ldlr(-/-)) 的小鼠接受了5个月的重组OPG (Fc-OPG) 或载体治疗.
评估了动脉样硬化进展,病变大小,血管细胞因子,血胆固醇和矿物化的组织标记物 (骨素).

主要成果:

在小鼠中,Fc-OPG治疗显著减少了化病变区域.
OPG治疗没有影响动脉样硬化病变的大小,数量,血管细胞因子或血胆固醇.
用车辆治疗的小鼠表现出进展性动脉样硬化,血OPG水平增加,以及一些化病变.

结论:

骨质保护素 (OPG) 作为血管化的抑制剂.
OPG是动脉样硬化进展的标记物,而不是调解物.
这些发现支持OPG在防止血管矿化方面起着保护作用.

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