著者

Naomi OSAKABE Chiaki SANBONGI Megumi YAMAGISHI Toshio TAKIZAWA Toshihiko OSAWA

出版者

(社)日本農芸化学会

雑誌

Bioscience, Biotechnology, and Biochemistry (ISSN:09168451)

巻号頁・発行日

vol.62, no.8, pp.1535-1538, 1998 (Released:2005-03-25)

参考文献数

26

被引用文献数

35

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The antiulcer activity of cacao liquor water-soluble crude polyphenols (CWSP) was examined.   CWSP, α-tocopherol, sucralfate (500 mg/kg), and cimetidine (250 mg/kg) were orally administerted to male SD rats 30 minutes before ethanol treatment. 5 ml/kg of ethanol given intragastrically caused lesions in mucosa of the glandular stomach. CWSP caused a reduction of such hemorrhagic lesions as well as cimetidine and sucralfate which are typical antiulcer drugs, but α-tocopherol was less effective. Thiobarbituric acid reactive substances in gastric mucosa significantly increased with ethanol administration. CWSP treatment significantly reduced this change. The administration of ethanol extensively increased myeloperoxidase (MPO) but not xanthine oxidase (XOD) activity. CWSP reduced the activities of both enzymes; they were considered the main sources of oxygen radicals. According to an in vitro study, CWSP directly reducted XOD but not MPO. These results suggest that the antiulcer mechanism of CWSP was not only radical scavenging but also modulation of leukocyte function.