Effects of tobacco extract on the proliferation and HSP70 expression of human periodontal ligament cells / 实用口腔医学杂志

ABSTRACT

Objective:To study the effects of smokeless tobacco extract(ST)on the proliferation and the heat shock protein 70 (HSP70)expression of human periodontal ligament cells(hPDLCs).Methods:hPDLCs were cultured in vitro and identified by im-munohistochemistry(IHC).The cells were stimulated with ST at 0.01 6 -50 g/L respectively for 24 h,the proliferation was examine by MTT assay,HSP70 expression was detected by immunehistochemical staining and Western Blot.Results:ST inhibited the prolifer-ation and increased HSP70 expression in cytoplasm and nucleus at 0.4 -50 g/L dose dependantly.Conclusion:ST may inhibit the proliferation and increase HSP70 expression of hPDLCs in a dose depandant manner.