Korean J Parasitol.  1987 Dec;25(2):110-122. 10.3347/kjp.1987.25.2.110.

Histopathological changes of the liver after praziquantel treatment in Clonorchis sinensis infected rabbits

• Lee SH
• Hong ST
• Kim CS
• Sohn WM
• Chai JY
• Lee YS

• KMID: 1714961
• DOI: http://doi.org/10.3347/kjp.1987.25.2.110

Abstract

The rabbits were infected with Clnorchis sinensis and were treated with praziquantel at the dose of 50 mg/kg x 2 x 2 days afer 1, 2, 4, 8 weeks and 7 months from the infection. Their livers were observed histopathologically 1, 4 and 12 weeks after treatment. The findings are summarized as below: The changes of the liver in control rabbits were relatively mild until 2 weeks after infection. However, widening and thickening of bile ducts, proliferation of biliary epithelium and periductal fibrosis were moderate after 4 weeks from infection and those changes were severe after 8 weeks and 7months. Goblet cell metaplasia was found after 8 weeks from infection. The mild changes of 2-week infection group were completely recovered by 4 weeks after the treatment. In the groups of 4 or more weeks after infection, the changes of bile ducts became milder in the degree after the treatment, but were still found 12 weeks after the treatment. As the infection duration was passed, more severe changes were observed after the treatment. In this context, it is concluded that the liver changes of acute clonorchiasis in the early two weeks are reversible by treatment while chronic biliary epithelial changes are irreversible. Therefore, early treatment should be recommended as possible to minimize the remaining histopathological changes of liver in clonorchiasis.

MeSH Terms

parasitolgy-helminth-trematoda
Clonorchis sinensis
liver
clonorchiasis
chemotherapy
praziquantel
pathology
rabbit