Objective To study the effects of self-made Chinese sherbal gargle on AIDS related oral lesion.Methods 353 hospitalized AIDS patients from June 2007 to December 2009 were divided randomly into the experimental group(179 patients)and the control group(174 patients).ALL the patients were treated with systemic anti-viral therapy while the experimental group was mouthwashed by self-made herbal gargle and the control group with normal saline solution.The incidence of new oral lesion and the changes of the originM lesion were observed.Results The incidence of new oral lesion in the experimental group was obviously lower than that of the control group.The cure rate and effective rate of original oral lesion were much higher than the control group.Conclusions Self-made herbal gargle shows good effect in preventing and treating the AIDS related oral lesion.

Objective To quantitatively compare the γ-H2AX foci formation between DNA-PKcs+/+and DNA-PKcs-/-mouse embryonic fibroblast(MEF)cells,and to investigate the dynamic changes in DNA double-strand breaks(DSBs)in human nasopharyngeal carcinoma SUNE-1 cells exposed to X-ray radiation. Methods The expression of DNA-PKcs was determined by Western blot. The γ-H2AX foci formation induced by 5 Gy X-ray radiation was detected by cell immunofluorescence. The ImageJ software was used to quantitatively analyze the γ-H2AX foci formation. Results The expression of DNA-PKcs was silenced in DNA-PKcs-/-MEF cells and normal in DNA-PKcs+/+MEF cells. According to the dynamic analyses of the numbers of γ-H2AX foci/cell and γ-H2AX foci/mm2, a similar tendency was observed in DSB formation in DNA-PKcs+/+MEF cells, DNA-PKcs-/-MEF cells,and SUNE-1 cells exposed to X-ray radiation. A large number of γ-H2AX foci formed at 0.5-1.0 h after radiation. DSBs were repaired at 6 h after radiation in DNA-PKcs+/+MEF cells and 24 h after radiation in DNA-PKcs-/-MEF cells and SUNE-1 cells. The peak values of γ-H2AX foci/cell and γ-H2AX foci/mm2were observed at 1.0 and 0.5 h after radiation, respectively. Compared with DNA-PKcs+/+MEF cells, DNA-PKcs-/-MEF cells had different numbers of γ-H2AX foci/cell at 0.5, 1.0, 3.0, 6.0, and 12.0 h after radiation, as well as different numbers of γ-H2AX foci/mm2at 3.0, 6.0, and 12.0 h after radiation. Conclusions Quantitative measurement of the number of γ-H2AX foci/cell or γ-H2AX foci/mm2by cell immunofluorescence provides new insights into the quantitative and dynamic study of DSB damage and repair.