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Iranian Journal of Microbiology، جلد ۱۱، شماره ۳، صفحات ۲۳۲-۲۳۸
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عنوان انگلیسی Development of an immunoblotting assay for serodiagnosis of Burkholderia mallei infection: the whole-cell proteome-based paradigm
چکیده انگلیسی مقاله Background and Objectives: Burkholderia mallei is the leading cause of glanders, a highly transmittable and an OIE-notifiable disease of equidae. Despite the importance of B. mallei, little is known about serodiagnosis of glanders. The present study aimed to develop an immunoblotting assay based on whole-cell proteome of B. mallei to enable accurate serodiagnosis of glanders. Materials and Methods: Three farm horses were subcutaneously immunized with a crude suspension (106 cfu/ml) of heat-inactivated B. mallei formulated with incomplete Freund's adjuvant (IFA) to achieve a hyperimmune sera panel. The immunization was done for 1, 14 and 28 days with 1 dose of 1 ml antigen containing 106 cfu/ml. The hyperimmunity of sera was confirmed by CFT. B. mallei whole-cell proteome was prepared through sonication and the protein content was visualized by SDS-PAGE and quantified by Western blot using HRP-conjugated rabbit anti-horse IgG. A comprehensive set of positive and negative horse sera validated the test. Results: A ladder pattern of the B. mallei immunoreactive antigens was seen within the region of 20-90 kDa clearly and the immunoblot was scored positive, while no reaction was seen for the negative sera. The Western blot assay indicated a noticeably higher diagnostic specificity for positive or negative sera of glanders. Conclusion: The whole-cell proteome-based immunoblot proved reliable and straightforward in our study. The prepared antigen was adaptable for application in immunoblotting. We assumed this improved immunoblotting system provides appropriate sensitivity and also specificity expected in serodiagnosis of glanders in endemic areas and typically in less-developed countries.
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نویسندگان مقاله | Sajjad Yazdansetad
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran


| Nader Mosavari
Department of Tuberculin and Mallein, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran


| Keyvan Tadayon
Department of Veterinary Aerobic Bacterial Vaccines, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran


| Iraj Mehregan
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
نشانی اینترنتی http://ijm.tums.ac.ir/index.php/ijm/article/view/2054
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