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Immune efficacy of OmpH and OmpA DNA vaccines against avian Pasteurella multocida | ||
| Iranian Journal of Veterinary Research | ||
| مقاله 3، دوره 14، شماره 3 - شماره پیاپی 44، 2013، صفحه 197-202 اصل مقاله (168.26 K) | ||
| نوع مقاله: Full paper (Original article) | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2013.1681 | ||
| نویسندگان | ||
| Q. Gong* 1؛ C.L. Qin1؛ M.F. Niu1؛ M. Cheng2؛ X. F. Sun2؛ A.G. Zhang2 | ||
| 1Department of Biological Engineering, School of Food and Biological Engineering, He Nan University of Science and Technology, Luoyang, 471003 PR, China | ||
| 2MSc in Molecular Biology, Department of Biological Engineering, School of Food and Biological Engineering, He Nan University of Science and Technology, Luoyang, 471003 PR, China | ||
| چکیده | ||
| Avian Pasteurella multocida is an agent of fowl cholera. The protective effect achieved through orthodox vaccines is not ideal. The research on novel vaccines against avian Pasteurella multocida is imperative. In this study, the genes encoding outer membrane protein H and A (OmpH and OmpA) were cloned into the eukaryotic expression vector pcDNA3.1(+) and the recombinant plasmids, namely DNA vaccines (pOMPH and pOMPA) were obtained. Five groups of chickens (n=20 per group) were intramuscularly injected with the two recombinant plasmids, attenuated live vaccine, control vector pcDNA3.1(+) and PBS, respectively. The immune responses and protective efficacy were evaluated after immunization by serological and challenging. A significant increase in serum antibody levels was observed in chickens vaccinated with the attenuated live vaccine and the two DNA vaccines. Additionally, the lymphocyte proliferation (SI values) were higher in chickens immunized with the attenuated live vaccine and the two DNA vaccines than in those vaccinated with pcDNA3.1(+) and PBS (P<0.05). Furthermore, the two DNA vaccines provided partial protection to the vaccinated chickens; however, the protective efficacy was inferior to that provided by the attenuated live vaccine. | ||
| کلیدواژهها | ||
| Avian Pasteurella multocida؛ pOMPH؛ pOMPA؛ DNA vaccine؛ Immune efficacy | ||
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