[Objective] This study was to develop a live vector vaccine of goat pox virus of Peste des petits ruminants(PPR). [Method] Using PCR amplification technique, PPR H gene was obtained, then ligated into pGEM-T easy vect...[Objective] This study was to develop a live vector vaccine of goat pox virus of Peste des petits ruminants(PPR). [Method] Using PCR amplification technique, PPR H gene was obtained, then ligated into pGEM-T easy vector; the recombinants were digested by Nhe Ⅰ and Hind Ⅲ, and ligated into pEGFP-N1-P7.5, yielding the recombinant vector pEGFP-N1-P7.5-H; next the expression cassette EGFP-N1-P7.5-H was first released from recombinant vector pEGFP-N1-P7.5-H by double digestion of Hind Ⅲ and Nhe Ⅰ and ligated into pUC119-TK that was digested by Kpn Ⅰ, yielding the transfer vector pUC119-TK-EGFP-P7.5-H. [Result] Identification and double enzyme digestion showed that the transfer vector pUC119-TK-EGFP-P7.5-H was correctly constructed. From the transfer vector transfected BHK-21 cells which infected GTPV AV41, specific fluorescence was observed at 48th h of transfection. [Conclusion] The construction of goat poxvirus live vector laid a foundation for the live vector vaccine of PPR vaccine.展开更多
[Objective] The aim was to provide theoretical basis for effective prevention of goat pox disease.[Method] 5 cases of infected goats were diagnosed for goat pox with microbiology examination.The poxes on their skin,ru...[Objective] The aim was to provide theoretical basis for effective prevention of goat pox disease.[Method] 5 cases of infected goats were diagnosed for goat pox with microbiology examination.The poxes on their skin,rumen,reticulum,omasum,abomasum and submandibular lymph nodes,bronchial lymph nodes,lung and spleen were macroscopically and microscopically observed with pathanatomical and histopathological technique.[Result] Poxes on skin mainly showed ashen hemisphere state and gave prominence to the surface of skin; some cases had hemorrhage in the poxes and showed dark purplish red.Poxes on gastric mucosa showed ashen.Cytoplasmic inclusion body could be all observed in epithelial cells of the poxes and macrphages of lymph node,lung and spleen.[Conclusion] Poxes on skin,lung and the surface of gastric mucosa as well as cytoplasmic inclusion body in the epithelial cells of pox and the macrphages of lymphoid organs were the especial pathochanges of goat pox,which could be taken as the proof of goat pox＇s clinic diagnisis.展开更多
Sheep pox, goat pox, and lumpy skin diseases are economically significant and contagious viral diseases of sheep, goats and cattle, respectively, caused by the genus Capripoxvirus (CaPV) of the family Poxviridae. Curr...Sheep pox, goat pox, and lumpy skin diseases are economically significant and contagious viral diseases of sheep, goats and cattle, respectively, caused by the genus Capripoxvirus (CaPV) of the family Poxviridae. Currently, CaPV infection of small ruminants (sheep and goats) has been distributed widely and are prevalent in Central Africa, the Middle East, Europe and Asia. This disease poses challenges to food production and distribution, affecting rural livelihoods in most African countries, including Ethiopia. Transmission occurs mainly by direct or indirect contact with infected animals. They cause high morbidity (75-100% in endemic areas) and mortality (10-85%). Additionally, the mortality rate can approach 100% in susceptible animals. Diagnosis largely relies on clinical symptoms, confirmed by laboratory testing using real-time PCR, electron microscopy, virus isolation, serology and histology. Control and eradication of sheep pox virus (SPPV), goat pox virus (GTPV), and lumpy skin disease (LSDV) depend on timely recognition of disease eruption, vector control, and movement restriction. To date, attenuated vaccines originating from KSGPV O-180 strains are effective and widely used in Ethiopia to control CaPV throughout the country. This vaccine strain is clinically safe to control CaPV in small ruminants but not in cattle which may be associated with insufficient vaccination coverage and the production of low-quality vaccines.展开更多
[目的]建立山羊痘的病理学、血清学及分子生物学诊断方法。[方法]选择山东省临沂市某大型养殖场感染山羊痘病毒的50例奶山羊作为观察组,同期未感染的健康奶山羊50例作为对照组,采集血液及相关病变组织材料进行病理学、血清学和分子生物...[目的]建立山羊痘的病理学、血清学及分子生物学诊断方法。[方法]选择山东省临沂市某大型养殖场感染山羊痘病毒的50例奶山羊作为观察组,同期未感染的健康奶山羊50例作为对照组,采集血液及相关病变组织材料进行病理学、血清学和分子生物学检测。[结果]病理剖检显示,山羊痘病的奶山羊皮肤、口腔、鼻腔、喉头、气管黏膜及肝脏、肾脏、肺脏及胃组织等多处出现较多典型疹痘。琼脂糖扩散试验显示,山羊痘沉淀抗原与阳性血清发生反应,琼脂糖凝胶孔出现白色沉淀线;健康奶山羊对照抗原则没有任何沉淀线出现。高敏荧光检测显示,感染山羊痘的奶山羊血清抗体效价显著高于健康奶山羊(96.24±5.73 vs 4.01±0.26,P<0.05)。PCR鉴定结果显示,鼻拭子样本、眼拭子样本、肺组织样本和阳性对照样本可扩增出455 bp特异性电泳条带。[结论]成功建立一种针对山东省临沂地区奶山羊感染山羊痘病毒的诊断方法,为后期该地区各类型养殖场山羊痘病控制和临床防治提供科学的参考依据。展开更多
文摘[Objective] This study was to develop a live vector vaccine of goat pox virus of Peste des petits ruminants(PPR). [Method] Using PCR amplification technique, PPR H gene was obtained, then ligated into pGEM-T easy vector; the recombinants were digested by Nhe Ⅰ and Hind Ⅲ, and ligated into pEGFP-N1-P7.5, yielding the recombinant vector pEGFP-N1-P7.5-H; next the expression cassette EGFP-N1-P7.5-H was first released from recombinant vector pEGFP-N1-P7.5-H by double digestion of Hind Ⅲ and Nhe Ⅰ and ligated into pUC119-TK that was digested by Kpn Ⅰ, yielding the transfer vector pUC119-TK-EGFP-P7.5-H. [Result] Identification and double enzyme digestion showed that the transfer vector pUC119-TK-EGFP-P7.5-H was correctly constructed. From the transfer vector transfected BHK-21 cells which infected GTPV AV41, specific fluorescence was observed at 48th h of transfection. [Conclusion] The construction of goat poxvirus live vector laid a foundation for the live vector vaccine of PPR vaccine.
基金Supported by Science and Technology Innovation Talents Support Project in University of Henan Province (2010HASTIT026)~~
文摘[Objective] The aim was to provide theoretical basis for effective prevention of goat pox disease.[Method] 5 cases of infected goats were diagnosed for goat pox with microbiology examination.The poxes on their skin,rumen,reticulum,omasum,abomasum and submandibular lymph nodes,bronchial lymph nodes,lung and spleen were macroscopically and microscopically observed with pathanatomical and histopathological technique.[Result] Poxes on skin mainly showed ashen hemisphere state and gave prominence to the surface of skin; some cases had hemorrhage in the poxes and showed dark purplish red.Poxes on gastric mucosa showed ashen.Cytoplasmic inclusion body could be all observed in epithelial cells of the poxes and macrphages of lymph node,lung and spleen.[Conclusion] Poxes on skin,lung and the surface of gastric mucosa as well as cytoplasmic inclusion body in the epithelial cells of pox and the macrphages of lymphoid organs were the especial pathochanges of goat pox,which could be taken as the proof of goat pox＇s clinic diagnisis.
文摘Sheep pox, goat pox, and lumpy skin diseases are economically significant and contagious viral diseases of sheep, goats and cattle, respectively, caused by the genus Capripoxvirus (CaPV) of the family Poxviridae. Currently, CaPV infection of small ruminants (sheep and goats) has been distributed widely and are prevalent in Central Africa, the Middle East, Europe and Asia. This disease poses challenges to food production and distribution, affecting rural livelihoods in most African countries, including Ethiopia. Transmission occurs mainly by direct or indirect contact with infected animals. They cause high morbidity (75-100% in endemic areas) and mortality (10-85%). Additionally, the mortality rate can approach 100% in susceptible animals. Diagnosis largely relies on clinical symptoms, confirmed by laboratory testing using real-time PCR, electron microscopy, virus isolation, serology and histology. Control and eradication of sheep pox virus (SPPV), goat pox virus (GTPV), and lumpy skin disease (LSDV) depend on timely recognition of disease eruption, vector control, and movement restriction. To date, attenuated vaccines originating from KSGPV O-180 strains are effective and widely used in Ethiopia to control CaPV throughout the country. This vaccine strain is clinically safe to control CaPV in small ruminants but not in cattle which may be associated with insufficient vaccination coverage and the production of low-quality vaccines.
文摘[目的]建立山羊痘的病理学、血清学及分子生物学诊断方法。[方法]选择山东省临沂市某大型养殖场感染山羊痘病毒的50例奶山羊作为观察组,同期未感染的健康奶山羊50例作为对照组,采集血液及相关病变组织材料进行病理学、血清学和分子生物学检测。[结果]病理剖检显示,山羊痘病的奶山羊皮肤、口腔、鼻腔、喉头、气管黏膜及肝脏、肾脏、肺脏及胃组织等多处出现较多典型疹痘。琼脂糖扩散试验显示,山羊痘沉淀抗原与阳性血清发生反应,琼脂糖凝胶孔出现白色沉淀线;健康奶山羊对照抗原则没有任何沉淀线出现。高敏荧光检测显示,感染山羊痘的奶山羊血清抗体效价显著高于健康奶山羊(96.24±5.73 vs 4.01±0.26,P<0.05)。PCR鉴定结果显示,鼻拭子样本、眼拭子样本、肺组织样本和阳性对照样本可扩增出455 bp特异性电泳条带。[结论]成功建立一种针对山东省临沂地区奶山羊感染山羊痘病毒的诊断方法,为后期该地区各类型养殖场山羊痘病控制和临床防治提供科学的参考依据。
