majonoside-r2 and Skin-Neoplasms

majonoside-r2 has been researched along with Skin-Neoplasms* in 2 studies

Other Studies

2 other study(ies) available for majonoside-r2 and Skin-Neoplasms

Article	Year
Cancer chemopreventive activity of majonoside-R2 from Vietnamese ginseng, Panax vietnamensis. Cancer letters, 1999, Dec-01, Volume: 147, Issue:1-2 In the course of our continuing search for novel cancer chemopreventive agents from natural sources, several kinds of Panax plants were screened. Consequently, the ocotillol-type saponin, majonoside-R2 (MR2), was obtained from the rhizome and root of Panax vietnamensis (Vietnamese ginseng) as an active constituent. MR2 exhibited potent anti-tumor-promoting activity on two-stage carcinogenesis test of mouse hepatic tumor using N-nitrosodiethylamine (DEN) as an initiator and phenobarbital (PB) as a promoter. Further, MR2 exhibited the remarkable inhibitory effect on two-stage carcinogenesis test of mouse skin induced by nitric oxide (NO) donor/12-O-tetradecanoylphorbol-13-acetate (TPA) or peroxynitrite/TPA. Topics: Alkylating Agents; Animals; Anticarcinogenic Agents; Carcinogenicity Tests; Carcinogens; Diethylnitrosamine; Female; Focal Nodular Hyperplasia; Ginsenosides; Liver Neoplasms, Experimental; Mice; Mice, Inbred ICR; Mice, Inbred SENCAR; Nitrates; Nitro Compounds; Panax; Papilloma; Phenobarbital; Plants, Medicinal; Saponins; Skin Neoplasms; Tetradecanoylphorbol Acetate; Vietnam	1999
Anti-tumor-promoting activity of majonoside-R2 from Vietnamese ginseng, Panax vietnamensis Ha et Grushv. (I). Biological & pharmaceutical bulletin, 1998, Volume: 21, Issue:8 Seven saponins (1-7) isolated from the rhizomes and roots of Panax vietnamensis were tested for their inhibitory effects on Epstein-Barr virus early antigen (EBV-EA) induced by the tumor promoter, 12-O-tetradecanoylphorbol-13-acetate (TPA), in Raji cells as a primary screening test for anti-tumor-promoters (cancer chemopreventive agents). The ocotillol-type saponin, majonoside-R2 (2), which is the major and characteristic constituent of this plant, exhibited a significant inhibitory effect on EBV-EA activation. Furthermore, the cell cycle analysis of 2 on Raji cells was also examined and strong inhibition was observed on the effect of the cell cycle induced by TPA. Compound 2 showed potent anti-tumor-promoting activity in two-stage carcinogenesis tests of mouse skin using 7,12-dimethylbenz[a]anthracene (DMBA) as an initiator and TPA or fumonisin B1 as a promoter. Consequently, these results suggest that majonoside-R2 (2) could be a valuable chemopreventive agent against chemical carcinogenesis. Topics: Animals; Anticarcinogenic Agents; Antigens, Viral; Carboxylic Acids; Fumonisins; Ginsenosides; Male; Mice; Mice, Inbred ICR; Papilloma; Saponins; Skin Neoplasms; Tetradecanoylphorbol Acetate	1998

Article

Year

Cancer chemopreventive activity of majonoside-R2 from Vietnamese ginseng, Panax vietnamensis.

Cancer letters, 1999, Dec-01, Volume: 147, Issue:1-2

In the course of our continuing search for novel cancer chemopreventive agents from natural sources, several kinds of Panax plants were screened. Consequently, the ocotillol-type saponin, majonoside-R2 (MR2), was obtained from the rhizome and root of Panax vietnamensis (Vietnamese ginseng) as an active constituent. MR2 exhibited potent anti-tumor-promoting activity on two-stage carcinogenesis test of mouse hepatic tumor using N-nitrosodiethylamine (DEN) as an initiator and phenobarbital (PB) as a promoter. Further, MR2 exhibited the remarkable inhibitory effect on two-stage carcinogenesis test of mouse skin induced by nitric oxide (NO) donor/12-O-tetradecanoylphorbol-13-acetate (TPA) or peroxynitrite/TPA.

Topics: Alkylating Agents; Animals; Anticarcinogenic Agents; Carcinogenicity Tests; Carcinogens; Diethylnitrosamine; Female; Focal Nodular Hyperplasia; Ginsenosides; Liver Neoplasms, Experimental; Mice; Mice, Inbred ICR; Mice, Inbred SENCAR; Nitrates; Nitro Compounds; Panax; Papilloma; Phenobarbital; Plants, Medicinal; Saponins; Skin Neoplasms; Tetradecanoylphorbol Acetate; Vietnam

1999

Anti-tumor-promoting activity of majonoside-R2 from Vietnamese ginseng, Panax vietnamensis Ha et Grushv. (I).

Biological & pharmaceutical bulletin, 1998, Volume: 21, Issue:8

Seven saponins (1-7) isolated from the rhizomes and roots of Panax vietnamensis were tested for their inhibitory effects on Epstein-Barr virus early antigen (EBV-EA) induced by the tumor promoter, 12-O-tetradecanoylphorbol-13-acetate (TPA), in Raji cells as a primary screening test for anti-tumor-promoters (cancer chemopreventive agents). The ocotillol-type saponin, majonoside-R2 (2), which is the major and characteristic constituent of this plant, exhibited a significant inhibitory effect on EBV-EA activation. Furthermore, the cell cycle analysis of 2 on Raji cells was also examined and strong inhibition was observed on the effect of the cell cycle induced by TPA. Compound 2 showed potent anti-tumor-promoting activity in two-stage carcinogenesis tests of mouse skin using 7,12-dimethylbenz[a]anthracene (DMBA) as an initiator and TPA or fumonisin B1 as a promoter. Consequently, these results suggest that majonoside-R2 (2) could be a valuable chemopreventive agent against chemical carcinogenesis.

Topics: Animals; Anticarcinogenic Agents; Antigens, Viral; Carboxylic Acids; Fumonisins; Ginsenosides; Male; Mice; Mice, Inbred ICR; Papilloma; Saponins; Skin Neoplasms; Tetradecanoylphorbol Acetate

1998