Suppressive effects of chlorogenic acid on N-methyl-N-nitrosourea-induced glandular stomach carcinogenesis in male F344 rats. 1999

M Shimizu, and N Yoshimi, and Y Yamada, and K Matsunaga, and K Kawabata, and A Hara, and H Moriwaki, and H Mori
Department of Pathology, Gifu University School of Medicine, Japan.

The modifying effects of chlorogenic acid (CA) on N-methyl-N-nitrosourea (MNU)-induced glandular stomach carcinogenesis were investigated in five groups of male F344 rats. Rats in Groups 1 through 3 were given MNU in drinking water at a concentration of 400 ppm for 12 weeks. Animals of Group 1 were then kept on the basal diet alone, and those of Group 2 or 3 were fed a diet containing 500 or 250 ppm CA for a subsequent 22 weeks. Group 4 was exposed to CA alone through the experimental period (36 weeks), and Group 5 was given the basal diet continuously and treated as a control. At the end of the experiment, the incidence of glandular stomach carcinoma of Group 3 was significantly smaller than that of Group 1 (p < 0.03). The incidence of adenomatous hyperplasia of Group 2 was also significantly lower than that of Group 1 (p < 0.02). In addition, the proliferating cell nuclear antigen (PCNA) labeling index of the epithelial cells from the non-neoplastic mucosa in rats of Group 2 or 3 was significantly smaller than that of Group 1 (p < 0.0001). These results suggest that CA has a chemopreventive effect on MNU-induced rat glandular stomach carcinogenesis by exposure during the post-initiation phase, and CA may be a promising agent for prevention of human stomach cancer.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008297 Male Males
D008770 Methylnitrosourea A nitrosourea compound with alkylating, carcinogenic, and mutagenic properties. Nitrosomethylurea,N-Methyl-N-nitrosourea,NSC-23909,N Methyl N nitrosourea,NSC 23909,NSC23909
D011916 Rats, Inbred F344 An inbred strain of rat that is used for general BIOMEDICAL RESEARCH purposes. Fischer Rats,Rats, Inbred CDF,Rats, Inbred Fischer 344,Rats, F344,Rats, Inbred Fisher 344,CDF Rat, Inbred,CDF Rats, Inbred,F344 Rat,F344 Rat, Inbred,F344 Rats,F344 Rats, Inbred,Inbred CDF Rat,Inbred CDF Rats,Inbred F344 Rat,Inbred F344 Rats,Rat, F344,Rat, Inbred CDF,Rat, Inbred F344,Rats, Fischer
D002273 Carcinogens Substances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included. Carcinogen,Oncogen,Oncogens,Tumor Initiator,Tumor Initiators,Tumor Promoter,Tumor Promoters,Initiator, Tumor,Initiators, Tumor,Promoter, Tumor,Promoters, Tumor
D002726 Chlorogenic Acid A naturally occurring phenolic acid which is a carcinogenic inhibitor. It has also been shown to prevent paraquat-induced oxidative stress in rats. (From J Chromatogr A 1996;741(2):223-31; Biosci Biotechnol Biochem 1996;60(5):765-68). 3-Caffeoylquinic Acid,3 Caffeoylquinic Acid,Acid, 3-Caffeoylquinic,Acid, Chlorogenic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013274 Stomach Neoplasms Tumors or cancer of the STOMACH. Cancer of Stomach,Gastric Cancer,Gastric Neoplasms,Stomach Cancer,Cancer of the Stomach,Gastric Cancer, Familial Diffuse,Neoplasms, Gastric,Neoplasms, Stomach,Cancer, Gastric,Cancer, Stomach,Cancers, Gastric,Cancers, Stomach,Gastric Cancers,Gastric Neoplasm,Neoplasm, Gastric,Neoplasm, Stomach,Stomach Cancers,Stomach Neoplasm
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D018809 Proliferating Cell Nuclear Antigen Nuclear antigen with a role in DNA synthesis, DNA repair, and cell cycle progression. PCNA is required for the coordinated synthesis of both leading and lagging strands at the replication fork during DNA replication. PCNA expression correlates with the proliferation activity of several malignant and non-malignant cell types. Antigen, Proliferating Cell Nuclear,PCNA

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