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Abstract Title:

Protective effects of ginsenoside Rg(3) against cyclophosphamide-induced DNA damage and cell apoptosis in mice.

Abstract Source:

Arch Toxicol. 2008 Feb ;82(2):117-23. Epub 2007 Jun 28. PMID: 17598087

Abstract Author(s):

Qiu Hua Zhang, Chun Fu Wu, Lian Duan, Jing Yu Yang

Article Affiliation:

Qiu Hua Zhang

Abstract:

Despite the significant anti-tumor activities, cyclophosphamide (CP) also shows cytotoxicity to normal cells. In order to explore the protective effects of drugs against CP-induced adverse effects, 20(S)-ginsenoside Rg(3) was tested for its possibly protective activities on CP-induced DNA damage and cell apoptosis in mouse bone marrow cells or peripheral lymphocyte cells. In the current study, the alkaline single cell gel electrophoresis (comet assay), flow cytometry assay with annexin V-FITC/PI and AO/EB staining assay were employed to measure DNA strand breakage and cell apoptosis, respectively. The activities of SOD and GPx and the contents of MDA were also tested by the various colormetric methods. The results showed that CP at a dose of 100 mg/kg, i.p. significantly caused DNA damages in both mouse bone marrow cells and peripheral lymphocyte cells, and markedly inhibited the activities of GPx and SOD and increased MDA contents in mouse blood. Moreover, CP at a dose of 200 mg/kg, i.p. triggered apoptosis in mouse bone marrow cells. On the other hand, 20(S)-ginsenoside Rg(3) orally administered at a dose of 20 mg/kg to the animals once a day for 2 days significantly inhibited CP-induced DNA damages in mouse bone marrow cells and peripheral lymphocyte cells, decrease the apoptotic numbers of bone marrow cells, antagonized the reduction of the activities of SOD and GPx, and the increase in MDA contents. In conclusion, 20(S)-ginsenoside Rg(3) showed the significant protective effects on CP-induced cell DNA damage and apoptosis. These effects might be partially attributed to its protective actions against CP-induced oxidative stress.

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Sayer Ji
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