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Abstract Title:

Inhibitory effect of ginsenoside Rg3 combined with cyclophosphamide on growth and angiogenesis of ovarian cancer.

Abstract Source:

Chin Med J (Engl). 2007 Apr 5 ;120(7):584-8. PMID: 17442207

Abstract Author(s):

Tian-min Xu, Ying Xin, Man-hua Cui, Xin Jiang, Li-ping Gu

Article Affiliation:

Tian-min Xu

Abstract:

BACKGROUND: Ginsenoside Rg3, the main component isolated from ginseng, inhibits some kinds of tumour growth and angiogenesis. The combination of low dose chemotherapy and antiangiogenesis inhibitors suppresses growth of experimental tumours more effectively than conventional therapy. The effect of this combination on ovarian cancer remains to be evaluated. Therefore, we investigated the synergism of ginsenoside Rg3 and cyclophosphamide (CTX) on growth and angiogenesis of human ovarian cancer.

METHODS: Twenty-eight female athymic mice were divided randomly into 4 groups of 7: ginsenoside Rg3, CTX, ginsenoside Rg3 and CTX combination and control, after being transplanted with ovarian cancer cells (SKOV-3). The mice were given intraperitoneal injection of ginsenoside Rg3 and CTX for the 10 days following inoculation of SKOV-3 cells. The life quality and number of living days of mice were recorded. The size of tumour, tumour inhibitive rate, life elongation rate, proliferating cell nuclear antigen labelling index (PCNALI), expression of vascular endothelial cell growth factor (VEGF) and microvessel density (MVD) of the tumour tissues were estimated.

RESULTS: Life quality of mice in ginsenoside Rg3 and combined treatment groups were better and number of living days longer than control. Average tumour weights of each treated group were less than control and there was no significant difference among the treated groups. PCNALI of treated groups was lower than control. The MVD value and VEGF expression in treated groups were significantly lower than control and the MVD values of ginsenoside Rg3 and combined treatment groups were lower than that of CTX group.

CONCLUSIONS: Ginsenoside Rg3 significantly inhibited growth and angiogenesis of ovarian cancer when used alone or combined with CTX. Ginsenoside Rg3 and CTX combination reinforced the antitumour effect each other and improved the living quality and survival time of mice with tumour.

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