J Endod:瘦素对成牙本质分化和血管发生的作用:一项体内研究

2019-10-10 lishiting MedSci原创

瘦素作为一种肽类激素由脂肪组织分泌。这篇研究的目的是为了体内评估瘦素对修复性牙本质形成及血管再生的影响。

瘦素作为一种肽类激素由脂肪组织分泌。这篇研究的目的是为了体内评估瘦素对修复性牙本质形成及血管再生的影响。

研究将24只7周龄雄性大鼠麻醉。在上颌第一磨牙预备窝洞。分别使用以下材料盖髓:PBS为载体的胶原支架(Col) (Col + PBS)、1 μmol/L的瘦素与Col (L1 + Col)或10 μmol/L的瘦素与Col (L10 + Col)。对于阴性对照组(未盖髓),未使用任何盖髓材料。所有窝洞均使用树脂改良型玻璃离子充填,随后通过micro-CT扫描、组织学检验和免疫组化进行分析。

结果显示,micro-CT影像表明,瘦素组内新形成的矿化组织体积明显高于对照组(P < .01)。组织学检验结果显示,在未盖髓和Col + PBS组中几乎无硬组织形成。然而,瘦素组中存在显著的大量的新生硬组织沉积(P < .01)。免疫组化分析显示,瘦素组的髓腔中存在修复性牙本质以及再生的血管。并且在矿化组织周围检测到血管内皮生长因子、牙本质涎蛋白和牙本质涎磷蛋白的表达。

结论:瘦素在牙髓暴露的大鼠中能够诱导血管再生、成牙本质分化和矿化。瘦素在牙髓组织中也展现出良好的免疫反应。在髓腔中不仅存在骨性牙本质并且还可以检测到管状牙本质及再生的血管。

原始出处:

Choi SH, Jang JH, et al. Effect of Leptin on Odontoblastic Differentiation and Angiogenesis: An In Vivo Study. J Endod. 2019 Oct 1. pii: S0099-2399(19)30586-2. doi: 10.1016/j.joen.2019.08.003.

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    2019-10-12 sodoo
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    2019-10-10 14747dfdm73(暂无昵称)

    哈哈

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