J Periodontal Res: 间充质干细胞促进牙槽骨再生

2018-07-22 MedSci MedSci原创

青春期拔牙后颊侧牙槽骨受损增加了未来种植体修复的难度。本研究旨在评价自体游离支架-骨髓间充质干细胞(MSC)移植到颊侧牙槽骨表面刺激局部骨生长的可行性和有效性。

青春期拔牙后颊侧牙槽骨受损增加了未来种植体修复的难度。本研究旨在评价自体游离支架-骨髓间充质干细胞(MSC)移植到颊侧牙槽骨表面刺激局部骨生长的可行性和有效性。

从3个月大的猪(n = 5)中取出下颌骨髓,从中分离出MSC并培养扩增。然后使用温敏组织培养板制作三层MSC片。骨髓取出一个月后,对同一只猪进行双侧拔除下颌第一磨牙,然后立即将3个自体三层MSC片移植到1个随机选择侧的颊侧骨膜下牙槽骨表面。对侧(对照)不接受MSC片移植,接受相同的骨膜反射手术。六周后,处死动物,立即收集两侧的标本进行放射照相和组织学分析。使用配对t检验对颊侧牙槽骨厚度,组织矿物质密度(TMD),矿物沉积和骨体积分数(BV / TV)进行量化并在MSC板和对照侧之间进行比较。

结果:制造三层MSC片可靠,并且大多数细胞在移植前仍然是重要的。随着MSC片移植,颊侧骨的厚度趋于增加(P = .18),5只动物中的4只在MSC片侧比对照侧显示骨厚度平均1.82±0.73mm。在通过皮质骨的TMD标准化后,MSC片侧的表面皮质骨的TMD比对照侧高0.5倍(P <.05)。同样,在通过来自皮质内区域的测量值归一化后,MSC片侧的口腔表面区域的BV / TV测量值也比对照侧高0.4倍(P <.05)。矿物沉积测量在两侧之间没有差异。

可将下颌骨髓源性MSCs制成细胞片,并将MSC片自体移植到拔牙窝的骨膜下颊侧牙槽骨表面,可增加局部骨密度。

原始出处:

S. Mu, et al. Culture‐expanded mesenchymal stem cell sheets enhance extraction‐site alveolar bone growth: An animal study. Journal of Periodontal Research. 2018 August. doi: 10.1111/jre.12541

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    2019-03-19 feather89
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    2019-05-06 mei540
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    2018-07-24 lsj630
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    2018-07-22 131****1460

    学习了受益匪浅

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