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Cell Tissue Res:双膦酸盐可影响软骨内骨化的过程

2019-09-03 sunshine 译 MedSci原创

在软骨内骨化过程中,破骨细胞和软骨细胞分别是原发性骨和钙化软骨隔的再吸收所必需的。根据药物的不同类型双膦酸盐通过各种机制抑制矿化组织再吸收,这可以影响骨骼生长期间的骨重塑。本研究旨在分析阿仑膦酸钠(ALN)和依替膦酸盐(ETN)在大鼠长骨软骨内骨化过程中对破骨细胞生成和骨形成的影响。每天用ETN,ALN或无菌盐水溶液(对照)处理新生Wistar大鼠21天。其股骨和胫骨骨骺进行射线照相并通过光学,扫

在软骨内骨化过程中,破骨细胞和软骨细胞分别是原发性骨和钙化软骨隔的再吸收所必需的。根据药物的不同类型双膦酸盐通过各种机制抑制矿化组织再吸收,这可以影响骨骼生长期间的骨重塑。本研究旨在分析阿仑膦酸钠(ALN)和依替膦酸盐(ETN)在大鼠长骨软骨内骨化过程中对破骨细胞生成和骨形成的影响。

每天用ETN,ALN或无菌盐水溶液(对照)处理新生Wistar大鼠21天。其股骨和胫骨骨骺进行射线照相并通过光学,扫描和透射电子显微镜分析。通过实时定量聚合酶链反应分析与成骨和破骨细胞分化和活性相关的基因的表达。

结果显示,ETN组骨质基质较少,骨化区体重减轻,生长板紊乱,软骨面积扩大;ALN组中,该区域没有改变。ALN呈现潜伏的TRAP阳性细胞,而在ETN组中,它们被激活。两种二膦酸盐均可降低骨化区NFκB1和2,OPG,Spp1和Runx2的表达。ETN降低RANKL表达,而ALN降低RANK的表达。

结果还表明,除了药物的抗再吸收作用外,骨沉积的紊乱也伴随着成骨相关基因表达的减少而发生。

原始出处:

Rezende E, Bradaschia-Correa V, et al., Effects of bisphosphonates on osteogenesis and osteoclastogenesis signaling during the endochondral ossification of growing rats. Cell Tissue Res. 2017 May;368(2):287-300. doi: 10.1007/s00441-017-2574-3. Epub 2017 Feb 20.

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    2019-10-11 维他命
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    2020-05-16 xuyu
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