• Mass Spectrometry Letters
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• v.2 no.2
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• pp.45-48
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• 2011

The authors describe a method for monitoring dicyclanil levels in lamb and chicken muscle tissues. The devised procedure involves dicyclanyl extraction by SPE and its detection HPLC-UV/Vis and LC/MS/MS. The method was found to have LOD and LOQ values of $0.02\;mg\;kg^{-1}$ and $0.05\sim0.06\;mg\;kg^{-1}$, respectively. The intraday precision and an accuracy of spiked samples were found to have 2.3~10.4 RSD% and 80.9~105.7%, respectively.

• Parasites, Hosts and Diseases
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• v.54 no.3
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• pp.281-289
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• 2016

Clonorchis sinensis is a Group-I bio-carcinogen, associated with cholangiocarcinoma (CCA). The hamster is the only experimental model of C. sinensis-mediated CCA, but we oblige another animal model. The present study intended to develop a C. sinensis (Cs) mediated CCA model using C3H/He mice, co-stimulated with N-nitrosodimethylamine (NDMA) and dicyclanil (DC). The mice were divided into 8 groups with different combinations of Cs, NDMA, and DC. Six months later the mice were sacrificed and subjected to gross and histopathological examination. The body weights were significantly reduced among the groups treated with 2 or more agents (eg. Cs+NDMA, Cs+DC, NDMA+DC, and Cs+NDMA+DC). In contrast, liver weight percentages to body weight were increased in above groups by 4.1% to 4.7%. A Change of the spleen weight was observed only in Cs+NDMA group. Though C. sinensis infection is evident from hyperplastic changes, only 1 worm was recovered. Two mice, 1 from Cs and the other from Cs+DC group, showed mass forming lesions; 1 ($281.2mm^3$) from the Cs group was a hepatocellular adenoma and the other ($280.6mm^3$) from the Cs+DC group was a cystic mass (peliosis). Higher prevalence of gray-white nodules was observed in Cs group (42.9%) followed by Cs+NDMA+DC group (21.4%). The mice of the Cs+NDMA+DC group showed hyper-proliferation of the bile duct with fibrotic changes. No characteristic change for CCA was recognized in any of the groups. In conclusion, C3H/He mice produce no CCA but extensive fibrosis when they are challenged by Cs, NDMA, and DC together.