J Periodontol:尼古丁抑制成骨细胞的增殖和矿化的组织相关基因表达

2020-06-27 MedSci原创 MedSci原创

尼古丁是烟草的主要成分,之前有研究提出,尼古丁与牙周炎的发生发展相关。然而,尼古丁在成骨细胞功能中的确切作用仍不清楚。本实验旨在研究尼古丁对成骨细胞(OCCM-30)功能的影响.

尼古丁是烟草的主要成分,之前有研究提出,尼古丁与牙周炎的发生发展相关。然而,尼古丁在成骨细胞功能中的确切作用仍不清楚。本实验旨在研究尼古丁对成骨细胞(OCCM-30)功能的影响,包括增值,迁移和矿化的组织相关基因表达。

将永生化的鼠成牙骨质细胞暴露于多浓度的尼古丁中(0、10-6、10-5、10-4、10-3、10-2、10-1、1、2.5、5和10 mM),实时细胞分析细胞142小时的增殖情况。体外伤口愈合试验,评估暴露于尼古丁(1、2.5、5和10 mM)后2、4、6和24小时的细胞迁移情况。在经过尼古丁处理(0,10- 3,10-2,10-1,1,2.5,5和10 mM)OCCM-30细胞8和24小时后,逆转录定量聚合酶链反应评估骨唾液蛋白(BSP),I型胶原(COL-1),骨钙素(OCN),runt相关转录因子2(Runx2)和碱性磷酸酶(ALP)的mRNA表达。

结果发现,在1-10 mM的浓度下,尼古丁显著降低了成骨细胞的增殖能力(P <0.01)。暴露于浓度(1、2.5和5 mM)的尼古丁会显著降低伤口愈合速度,而10 mM的尼古丁会立即降低OCCM-30细胞的活力。在最高尼古丁浓度的倒置显微镜图像中观察到了相似的结果。所有浓度的尼古丁均以剂量和时间依赖性方式降低BSP和COL-1的转录本(P <0.001)。尼古丁浓度高于1 mM时,OCN,RunX2和ALP的表达呈时间依赖性降低(P <0.001)。

因此,尼古丁会抑制OCCM-30细胞的增殖,迁移和矿化的组织相关基因表达。尼古丁可能会抑制成骨细胞功能和牙骨质形成的作用。

原文出处:

Serife Buket Bozkurt,Nicotine suppresses proliferation and mineralized tissue‐associated gene expressions of cementoblasts. Journal of periodontology, 2020 June. Doi: 10.1002/JPER.19-0256

 

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    2021-03-06 yahu
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    2021-06-12 feather89
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    2020-06-29 zhaojie88
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    2020-06-27 mswert122

    这种研究只能看一看并不是特别可信。

    0

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