• Mahboubeh Hadipour, Mohammad Nazari, Behnam Sanei, Zahra Ghayour, Seyedeh Maryam Sharafi, Hajar Yazdani, and Hossein Yousofi Darani.
• Department of Medical Parasitology and Mycology, Isfahan University of Medical Sciences, Isfahan, Iran.
• J Res Med Sci. 2016 Jan 1; 21: 130.

BackgroundEchinococcosis is a parasitic disease with worldwide distribution which is caused by the tapeworms Echinococcus granulosus. Diagnosis of the disease relies on imaging techniques, but the techniques are not able to differentiate the cyst from benign or malignant tumors; hence, appropriate serologic methods are required for the differential diagnosis of the infection.Materials And MethodsIn this investigation, different sheep hydatid cyst antigens probed with thirty sera of patients with hydatid cyst and also thirty human normal sera using Western immunoblotting technique. Considering results of surgery as gold standard, sensitivity and specificity of Western blotting was estimated.ResultsSera of 29, 26, and 16 patients with hydatid cyst reacted with specific bands of hydatid cyst fluid (HCF), protoscolex crude antigen, and cyst wall crude antigen, respectively. However, none of the normal human sera reacted with those specific bands.ConclusionA 20 kDa band of sheep HCF is an appropriate antigen for serodiagnosis of hydatid cyst infection.

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