Abstract:
:In Mongolian gerbils, the gastric mucosa shows dramatic changes after Helicobacter pylori inoculation. The influence of the timing of N-methyl-N-nitrosourea (MNU) administration after H. pylori inoculation on gastric carcinogenesis was investigated. Ninety-two gerbils were divided into four groups. One group was given MNU at 24 weeks, and another at 1 week, after H. pylori inoculation. The other groups received only MNU. Stomachs were excised for histological examination 20 weeks after completing the MNU treatment. Carcinomas arose only in animals given MNU 1 week after H. pylori inoculation. In the relationship between H. pylori and gastric carcinogenesis, H. pylori is a promoter rather than an initiator, and other environmental factors (the timing of MNU administration) play important roles.
journal_name
Cancer Lettjournal_title
Cancer lettersauthors
Maruta F,Sugiyama A,Ishida K,Ikeno T,Murakami M,Kawasaki S,Ota H,Tatematsu M,Katsuyama Tdoi
10.1016/s0304-3835(00)00571-1keywords:
subject
Has Abstractpub_date
2000-11-10 00:00:00pages
99-105issue
1eissn
0304-3835issn
1872-7980pii
S0304-3835(00)00571-1journal_volume
160pub_type
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