The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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Effects of nitric oxide on the proliferation and differentiation of human periodontal ligament cells

산화질소가 인간 치주인대세포의 증식과 분화에 미치는 영향

  • Published : 2006.12.31
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Abstract

Objective: This study evaluated the effects of nitric oxide (NO) on the proliferation and differentiation of human periodontal ligament cells involved in orthodontic tooth movement. Methods: A range of concentrations of sodium nitroprusside (SNP), a NO donor, were administered to samples of human periodontal ligament cells, followed by measurement of cell viability, alkaline phosphatase (ALP) activity, and expression of osteonectin and bone sialoprotein. Results: Cell viability, ALP activity and the expression of osteonectin and bone sialoprotein were increased in human periodontal ligament cells treated with SNP concentrations of < 0.2 mM compared with controls, but were decreased with SNP concentrations of > 1.0 mM. Conclusion: NO has a biphasic effect on proliferation and differentiation in human periodontal ligament cells, with a stimulatory effect at low concentrations and an inhibitory effect at high concentrations.

교정적 치아이동과 밀접한 관련이 있는 치주인대세포에서, 산화질소가 세포의 증식과 분화에 미치는 영향을 알아보고자 하였다. 인간 치주인대세포를 분주한 후에 산화질소의 donor인 SNP의 농도에 따라 실험군을 구분하고, 세포 활성 염기성 인산분해효소 활성, Western blot 분석을 통한 osteonectin과 bone sialoprotein의 발현 정도를 측정하였다. 0.2 mM 이하의 저농도 SNP를 처리한 실험군에서 대조군과 비교하여 세포 활성, 염기성 인산분해 효소의 활성, 그리고 osteonectin과 bone sialoprotein의 발현이 유의하게 증가하였다. 그러나 1 mM 이상의 고농도 SNP를 처리한 실험군에서는 오히려 감소하였다. 산화질소는 인간 치주인대세포에서 저농도는 세포의 증식과 분화에 촉진 효과를, 고농도는 억제 효과를 보이는 biphasic effect를 갖는다.

Keywords

References

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