Forty seven clinical samples of Fowl adenovirus (FAdV) associated with Inclusion Body Hepatitis (IBH) from Peruvian broilers received between July 2006 and April 2013 were genotyped using sequencing of L1 Loop of Hexo...Forty seven clinical samples of Fowl adenovirus (FAdV) associated with Inclusion Body Hepatitis (IBH) from Peruvian broilers received between July 2006 and April 2013 were genotyped using sequencing of L1 Loop of Hexon gene. All 47 clinical samples presented macroscopic and histopathology lesions consistent with IBH, and amplified a specific fragment of Hexon gene by Polymerase Chain Reaction (PCR). A unique nucleotide sequence of 789 base pairs of Hexon gene (position 273 to 1061) was obtained in all 47 clinical samples analyzed. This sequence showed a high level of conservation in amino acid and nucleotide sequence (>99%) with a Fowl Adenovirus C serotype 4 previously identified. Sequence and phylogenetic analysis indicate no genotypic variation in Peruvian isolates. The presence of a unique genotype very closely related with genotype C1 previously reported in Peru and Ecuador (>99%), suggests the presence of FAdV C serotype 4 genotype C1 in clinical cases of IBH from Peruvian broilers.展开更多
[ Objective] To establish an indirect ELISA method which can detect fowl adenovirus group I （FAVI） antibody easily and rapidly. [ Method] The expressed and purified FAVI penton recombinant protein was used to be an ...[ Objective] To establish an indirect ELISA method which can detect fowl adenovirus group I （FAVI） antibody easily and rapidly. [ Method] The expressed and purified FAVI penton recombinant protein was used to be an antigen, optimized the reaction conditions, and then estab- lished the FAVI indirect penton-ELISA antibody detection method. [ Result] The optimal coating concentration of antigen was 1.5 μg/hole, the opti- mal coating condition was 37℃ 2 h and 4 ℃ overnight; the optimal dilution of serum was 1：100; the optimal working concentration of anti-chicken IgG-HRP was 1：2 000; the positive and negative critical value of ELISA was 0.335. Detected the 100 chicken serum samples by the established penton-ELISA method, the positive rate was 41%. [ Conclusion] Through the study, ~e established penton-ELISA method has a good specificity, sensitivity and reproducibility. And it offers an effective tool for the diagnosis of FAVI, the survey of antibody and epidemiology survey.展开更多
禽腺病毒血清4型(FAdV-4)引起的禽肝炎-心包积液综合征已严重危害我国养禽业的发展,迫切需要深入了解FAdV-4的致病机制并制定有效的防控方案。论文旨在利用高通量测序技术分析禽腺病毒血清4型感染鸡肝癌(Leghorn male hepatocellular,L...禽腺病毒血清4型(FAdV-4)引起的禽肝炎-心包积液综合征已严重危害我国养禽业的发展,迫切需要深入了解FAdV-4的致病机制并制定有效的防控方案。论文旨在利用高通量测序技术分析禽腺病毒血清4型感染鸡肝癌(Leghorn male hepatocellular,LMH)细胞后差异表达的mRNA,以探究mRNA在FAdV-4感染过程中的作用及其调控机制。结果显示,与对照组相比,FAdV-4感染48 h共筛选到2604个上调的差异表达基因,2883个下调的差异表达基因。其中,GNB3、NECTIN4、SFRP4、FABP2、PLPP3、GALR1L和MBL 2等基因之前并没有被报道过与FAdV-4感染相关。通过GO和KEGG分析得知,差异表达基因主要富集在从细胞表面位点和信号受体结合至细胞周期调节、MAPK信号通路、细胞黏附分子作用等;其中,显著下调的差异基因还富集到多种代谢途径中,提示病毒感染会影响宿主细胞的代谢水平。本研究为深入解析FAdV-4感染宿主细胞的致病机制提供了相关的理论基础及科学依据。展开更多
文摘Forty seven clinical samples of Fowl adenovirus (FAdV) associated with Inclusion Body Hepatitis (IBH) from Peruvian broilers received between July 2006 and April 2013 were genotyped using sequencing of L1 Loop of Hexon gene. All 47 clinical samples presented macroscopic and histopathology lesions consistent with IBH, and amplified a specific fragment of Hexon gene by Polymerase Chain Reaction (PCR). A unique nucleotide sequence of 789 base pairs of Hexon gene (position 273 to 1061) was obtained in all 47 clinical samples analyzed. This sequence showed a high level of conservation in amino acid and nucleotide sequence (>99%) with a Fowl Adenovirus C serotype 4 previously identified. Sequence and phylogenetic analysis indicate no genotypic variation in Peruvian isolates. The presence of a unique genotype very closely related with genotype C1 previously reported in Peru and Ecuador (>99%), suggests the presence of FAdV C serotype 4 genotype C1 in clinical cases of IBH from Peruvian broilers.
基金Guangxi Expert Special Fund Project (2011B020)Guangxi Science and Technology Research (0815009-3-6 and 10100014-5 )Guangxi Natural Science Foundation (2010GXNSFA013090)
文摘[ Objective] To establish an indirect ELISA method which can detect fowl adenovirus group I （FAVI） antibody easily and rapidly. [ Method] The expressed and purified FAVI penton recombinant protein was used to be an antigen, optimized the reaction conditions, and then estab- lished the FAVI indirect penton-ELISA antibody detection method. [ Result] The optimal coating concentration of antigen was 1.5 μg/hole, the opti- mal coating condition was 37℃ 2 h and 4 ℃ overnight; the optimal dilution of serum was 1：100; the optimal working concentration of anti-chicken IgG-HRP was 1：2 000; the positive and negative critical value of ELISA was 0.335. Detected the 100 chicken serum samples by the established penton-ELISA method, the positive rate was 41%. [ Conclusion] Through the study, ~e established penton-ELISA method has a good specificity, sensitivity and reproducibility. And it offers an effective tool for the diagnosis of FAVI, the survey of antibody and epidemiology survey.
文摘禽腺病毒血清4型(FAdV-4)引起的禽肝炎-心包积液综合征已严重危害我国养禽业的发展,迫切需要深入了解FAdV-4的致病机制并制定有效的防控方案。论文旨在利用高通量测序技术分析禽腺病毒血清4型感染鸡肝癌(Leghorn male hepatocellular,LMH)细胞后差异表达的mRNA,以探究mRNA在FAdV-4感染过程中的作用及其调控机制。结果显示,与对照组相比,FAdV-4感染48 h共筛选到2604个上调的差异表达基因,2883个下调的差异表达基因。其中,GNB3、NECTIN4、SFRP4、FABP2、PLPP3、GALR1L和MBL 2等基因之前并没有被报道过与FAdV-4感染相关。通过GO和KEGG分析得知,差异表达基因主要富集在从细胞表面位点和信号受体结合至细胞周期调节、MAPK信号通路、细胞黏附分子作用等;其中,显著下调的差异基因还富集到多种代谢途径中,提示病毒感染会影响宿主细胞的代谢水平。本研究为深入解析FAdV-4感染宿主细胞的致病机制提供了相关的理论基础及科学依据。
