Abstract Cholangiocarcinoma (CCA) associated by
Opisthorchis viverrini remains a health problem in Southeast
Asia including Thailand. At present, there is still no efficient
treatment for CCA. Thunbergia laurifolia is a traditionally used medicinal plant; its aqueous leave extract possesses the antioxidant
activity and anti-inflammatory on hamster opisthorchiasis
had been reported previously. Here, we demonstrate the combined
effects of the T. laurifolia extract plus antihelminthic
drug, praziquantel (PZ) on hamsters with opisthorchiasis and
hamsters with opisthorchiasis related-cholangiocarcinoma
through light microscopic observations of histopathological
changes, as well as liver function tests for alanine transaminase
(ALT) and alkaline phosphatase, and kidney function tests for
blood urea nitrogen and creatinine. Results showed T. laurifolia
extract combined with praziquantel reduced inflammatory cell
aggregation and inhibiting CCA development, which were
correlated to the serum ALT level. These present studies suggest
that administration of T. laurifolia after praziquantel treatment
clearly improve the hepatobiliary system and could reduce
the risk of subsequent CCA development in human