Abstract
The effects of repeated infection with Opisthorchis viverrini on liver lesion development in male and female Syrian hamsters were investigated over a 1-yr period. Ten monthly intragastric applications of 50, 25, 13, or 0 parasite metacercariae resulted in pronounced proliferative and inflammatory lesions involving the first- and second-order ducts in response to the presence of adult worms. Despite the development of small numbers of putative preneoplastic areas of cholangiofibrosis and morphologically altered hepatocellular foci, no neoplastic lesions were evident at sacrifice after 1 yr. The results thus suggest that parasite infestation is itself not strongly carcinogenic if at all but, rather, that it exerts a marked promoting influence on cholangiocellular and hepatocellular tumor development in the hamster via chronic irritation and increased cell turnover.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
