J Dent Res:牙周膜对于体内负荷适应性的分子基础

2019-01-08 lishiting MedSci原创

进软食习惯会导致牙周膜(PDL)的改变。这些变化百年前就已经被确认,并将其归咎于机械负荷的改变。虽然这些适应性变化已经得到很好的观察和描述,但是变化潜在的分子、细胞和力学机制还未可知。在此,作者探讨了WNT信号在PDL对负荷不足情况下发生病理病因学反应的变化。

进软食习惯会导致牙周膜(PDL)的改变。这些变化百年前就已经被确认,并将其归咎于机械负荷的改变。虽然这些适应性变化已经得到很好的观察和描述,但是变化潜在的分子、细胞和力学机制还未可知。在此,作者探讨了WNT信号在PDL对负荷不足情况下发生病理病因学反应的变化。

结果显示,咀嚼时,PDL内Wnt易敏的细胞及其后代细胞增殖显著。当实验动物从断奶起就以软食饲养,这种Wnt易敏细胞的显著增殖则变得平稳;随之而来,PDL及其周围的牙槽骨发生退缩。恢复实验动物饮食硬物的习惯后PDL内的Wnt信号恢复。

结论:这些结果第一次表明了PDL对负荷适应性反应的潜在分子机制。

原始出处:

Zhang X, Yuan X, et al. Molecular Basis for Periodontal Ligament Adaptation to In Vivo Loading. J Dent Res. 2019 Jan 5:22034518817305. doi: 10.1177/0022034518817305.

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