title: Prevention of N-methyl-N'-nitro-N-nitrosoguanidine and saturated sodium chloride-induced gastric carcinogenesis in Wistar rats by lycopene.
abstract: We investigated "the "chemopreventive potential of lycopene against gastric carcinogenesis induced in male Wistar rats by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and saturated sodium chloride (S-NaCl). Administration of lycopene inhibited MNNG+S-NaCl-induced gastric carcinogenesis as revealed by the absence of carcinomas. Lipid peroxidation, reduced glutathione (GSH), glutathione peroxidase (GPx), glutathione S-transferase (GST) and glutathione reductase (GR) were used to monitor the chemopreventive potential of lycopene. The extent of lipid peroxidation was significantly lower, whereas GSH, GPx, GST and GR were markedly enhanced in the gastric mucosa of tumour-bearing animals. Our data suggest that lycopene may exert its inhibitory effects by modulating the oxidant and antioxidant status in the gastric mucosa.
authors.affiliation: Department of Biochemistry, Faculty of Science, Annamalai University, Annamalainagar-608 002, Tamil Nadu, India.
authors.forename: B
authors.initials: B
authors.lastname: Velmurugan
authors.forename: V
authors.initials: V
authors.lastname: Bhuvaneswari
authors.forename: Usha K
authors.initials: UK
authors.lastname: Burra
authors.forename: S
authors.initials: S
authors.lastname: Nagini
mesh_terms: D000818:Animals; D016588:Anticarcinogenic Agents / Q000627:therapeutic use*; D000975:Antioxidants / Q000627:therapeutic use*; D002273:Carcinogens; D002294:Carcinoma, Squamous Cell / Q000139:chemically induced / Q000378:metabolism / Q000517:prevention & control*; D002338:Carotenoids / Q000627:therapeutic use*; D005978:Glutathione / Q000378:metabolism; D005979:Glutathione Peroxidase / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D000077276:Lycopene; D008297:Male; D008769:Methylnitronitrosoguanidine; D051381:Rats; D017208:Rats, Wistar; D012462:Saline Solution, Hypertonic; D013274:Stomach Neoplasms / Q000139:chemically induced / Q000378:metabolism / Q000517:prevention & control*
chemical_list: D016588:Anticarcinogenic Agents; D000975:Antioxidants; D002273:Carcinogens; D012462:Saline Solution, Hypertonic; D008769:Methylnitronitrosoguanidine; D002338:Carotenoids; D005979:Glutathione Peroxidase; D005978:Glutathione; D000077276:Lycopene