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Journal of Arthropod-Borne Diseases، جلد ۱۶، شماره ۱، صفحات ۱-۱۲
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عنوان انگلیسی Cellular Immunity in Mice Vaccinated with Recombinant Phospholipase D Toxoid of Hemiscorpius lepturus Scorpion
چکیده انگلیسی مقاله Background: Hemiscorpius lepturus is one of the most dangerous scorpions in Iran and the world. Numerous studies have been conducted on phospholipases, especially phospholipase D, in this scorpion’s venom, and the results have shown this protein to be the main cause of death. Therefore, one of the most effective ways of preventing fatalities is to produce a toxoid vaccine from the deadly toxin of the venom. The present study was conducted to assess the non-toxicity of this toxoid and the safety of the vaccine candidate in BALB/c mice. Methods: The production of interferon-gamma and interleukin-4 cytokines in the spleen cells of the mice was measured using ELISpot assay 28 days following immunization with rPLD toxoid. Results: The unpaired t-test results showed a significant increase in the concentration of IFN-γ cytokine in the vaccinat­ed mice (P= 0.001), indicating that the immune system is directed toward the Th1 pattern, while no significant differ­ence was observed in the levels of IL-4 (P= 0.16) despite an increase in this cytokine. The in-vivo tests showed that the mice immunized with interval doses of 80µg of toxoid were completely protected against 10 × the LD100 of the venom. Moreover, the toxoid had no dermonecrotic effects and caused no necrotic and inflammatory complications in the rabbit skin. Conclusion: As a vaccine, the toxoid has the potential to increase the Th1 cytokine response and, subsequently, in­crease acquired cellular immunity. Thus, this toxoid appears to be able to provide an effective vaccine against the ven­om of Hemiscorpius lepturus.
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نویسندگان مقاله | Narges Safari-Foroushani
Ph.D


| Mohammad Hossein Modarressi
Ph.D


| Kamran Pooshang Bagheri
Ph.D


| Mahdi Behdani
Ph.D


| Delavar Shahbazzadeh
Ph.D
نشانی اینترنتی https://jad.tums.ac.ir/index.php/jad/article/view/1455
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