Serodiagnosis of Echinococcosis by ELISA Using Cystic Fluid from Uzbekistan Sheep
2013
Jin, Y., Seoul National University, College of Medicine, Seoul, Republic of Korea. | Anvarov, K., Republican Research Center for Emergency Medicine, Tashkent, Uzbekistan. | Khajibaev, A., Republican Research Center for Emergency Medicine, Tashkent, Uzbekistan. | Hong, S., Yang Hospital, Seoul, Republic of Korea. | Hong, S.T., Seoul National University, College of Medicine, Seoul, Republic of Korea.
According to increase of travel, the cases of imported echinococcosis have been increasing in Korea. The present study was undertaken to develop a serodiagnostic system for echinococcosis in Korea. For diagnosis of echinococcosis, the fluid of Echinococcus granulosus hydatid cysts was collected from naturally infected sheep in Uzbekistan. Also serum samples of infected patients who were surgically confirmed were collected in a hospital in Tashkent, Uzbekistan. According to the absorbance of 59 echinococcosis positive and 39 negative control serum samples, the cut-off value was determined as 0.27. The sensitivity and specificity of ELISA with hydatid fluid antigen were 91.5% and 96%, respectively. The antigen cross-reacted with the serum of some cysticercosis or clonorchiasis patients. However, immunoblot analysis on the cystic fluid recognized antigenic proteins of 7-, 16-, and 24-kDa bands in their dominant protein quantity and strong blotting reactivity. In conclusion, the present ELISA system using hydatid cyst fluid antigen from Uzbekistan sheep is sensitive and specific for diagnosis of echinococcosis cases.
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