J Periodontol: 缺乏1,25-二羟基维生素D是否会加速牙槽骨吸收

2018-06-03 MedSci MedSci原创

维生素D对骨稳态和免疫调节至关重要。因此,我们评估在缺失编码1,25-二羟基维生素D-1α羟化酶[1α(OH)ase]的小鼠(1α(OH)ase - / - 小鼠)中1,25-二羟基维生素D(1,25(OH)2 D) )是否会导致体内牙槽骨吸收和牙周炎。

维生素D对骨稳态和免疫调节至关重要。因此,我们评估在缺失编码1,25-二羟基维生素D-1α羟化酶[1α(OH)ase]的小鼠(1α(OH)ase - / - 小鼠)中1,25-二羟基维生素D(1,25(OH)2 D) )是否会导致体内牙槽骨吸收和牙周炎。

将10周龄和12月龄的1α(OH)ase - / - 小鼠和野生型同窝动物喂食正常饮食或营养饮食,然后使用micro-CT分析牙周组织的表型,组织学,免疫组织化学和实时RT-PCR。

结果:与野生型小鼠相比,1α(OH)ase - / - 小鼠的牙槽骨吸收增加并且上颌骨骨密度(BMD),成骨细胞数量和osterix阳性细胞数目显着降低。虽然从10周龄到12个月的老龄化加重了这些变化,而营养饮食减少了这些变化,但1α(OH)ase - / - 小鼠的变化却超过了衰老和饮食变化的影响。 (NF-кB)p65和CD3阳性细胞的核因子κappa轻链增强子,白细胞介素(IL)-1β,肿瘤坏死因子-α(TNF-α),基质金属蛋白酶MMP)-3和-8在1α(OH)ase - / - 小鼠牙周组织中的表达均显着高于野生型小鼠。老化也加剧了这些变化,而营养饮食减弱了变化,然而,1α(OH)ase - / - 小鼠的改变超过了衰老和饮食改变的影响。

1α(OH)ase - / - 小鼠会因为缺乏1,25(OH)2 D而抑制成骨细胞骨形成,促进牙周组织中钙和磷的降解以及与年龄无关的牙槽骨吸收加速。

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    2019-02-05 feather89
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    2019-01-17 mei540
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    2018-06-05 徐岩
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    2018-06-03 惠映实验室

    学习了.谢谢分享.

    0

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    2018-06-03 1e0f8808m18(暂无匿称)

    学习了.谢谢分享!

    0

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