华西口腔医学杂志

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纳米羟磷灰石/聚酰胺66对成骨细胞生物学作用的实验研究

叶玲,苏勤,周学东   

  1. 口腔生物医学工程教育部重点实验室,四川大学,四川 成都610041
  • 收稿日期:2005-04-25 修回日期:2005-04-25 出版日期:2005-04-20 发布日期:2005-04-20
  • 通讯作者: 周学东,Tel: 028-85501439
  • 作者简介:叶 玲(1975-),女,重庆人,讲师,博士
  • 基金资助:
    四川省科委重点资助项目(02SG022-001)

Biological Effects of Nano-hydroxyapatite/Polyamide 66 on the Osteoblast

YELing, SUQin, ZHOUXue-dong   

  1. KeyLab. ofOral Biomedical Engineering ofMinistry ofEducation, Sichuan University, Chengdu610041, China
  • Received:2005-04-25 Revised:2005-04-25 Online:2005-04-20 Published:2005-04-20

摘要: 目的 研究新型纳米根管充填材料纳米羟磷灰石/聚酰胺66(nHA-PA66)对成骨细胞的生物学作用。方法  以含nHA-PA66的细胞培养基(DMEM)浸提液作用于实验组细胞,DMEM培养基作用于对照组细胞,采用MTT比 色法检测nHA-PA66对成骨细胞生长的影响;酶联法检测细胞ALP活性的变化;QRT-PCR测量细胞骨钙素基因表达 的变化。结果 实验组细胞的相对增殖率在98%~106%之间,且无量效关系,实验组与对照组间无显著性差异 (P>0·05);实验组和对照组细胞的ALP活性及骨钙素基因表达相似,皆无显著性差异(P>0·05)。结论 nHA- PA66对成骨细胞的生长和功能无不良影响,具有骨细胞相容性。

关键词: 纳米羟磷灰石/聚酰胺66, 实时定量PCR, 成骨细胞

Abstract:

Objective To evaluate the biological effects of nano-hydroxyapatite/polyamide 66(nHA-PA66) on the growth and activity of osteoblast.Methods MTTassaywas used to determine the growth of osteoblast, enzymatic measure was used to deter- mine the activity of ALP and quantitative RT-PCR (QRT-PCR) to evaluate the changes of osteoclacin mRNA expression in os- teoblasts treated by DMEM eluate of nHA-PA66.Results Osteoblasts of different test groups demonstrated relative proliferation rate ranging from 98%~106% without dose-dependent effect. The ALP activity and osteocalcin mRNA expressionwere similar in test and control groups (P>0.05).Conclusion nHA-PA66 has no negative effects on the osteoblast and its osteoblast-compati- bility is proved.

Key words: nano-hydroxyapatite/polyamide 66, quantitative reverse transcriptase-PCR, osteoblast