[Effects of permanent magnetic field on DNA metabolism of human periodontal ligament fibroblasts in vitro].
In order to investigate the biological effects of permanent magnetic field on cell's DNA metabolism, human periodontal ligament (PDL) fibroblasts in vitro were treated in a DC electromagnetic field with strength of 0.14T. The microscopic-spectrum quantitative analysis showed that in once-everyday-treating group, the DNA contents in cells increased if they were treated 10, 40, 60 and 120 minutes everyday in one week and the longer the treating time lasted, the more remarkably the DNA contents increased. But in the other two groups, in which cells were treated once every other day as well as one time in one week, no remarkable changes were found. It indicated that 0.14T magnetic field has a time-delayed effect and an accumulation effect on PDL cell's DNA metabolism. When the threshold was achieved, it could promote the cell's DNA synthesis.
Zhao
G Z
GZ
Fourth Military Medical University, Xi'an.
D002478:Cells, Cultured; D004247:DNA / Q000096:biosynthesis*; D004574:Electromagnetic Fields; D005347:Fibroblasts / Q000378:metabolism; D006801:Humans; D010513:Periodontal Ligament / Q000166:cytology / Q000378:metabolism*; D013997:Time Factors
D004247:DNA