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Zhang J, Xie Z, Pan Y, Chen Z, Huang Y, Li L, Dong J, Xiang Y, Zhai Q, Li X, Sun M, Huang S, Liao M. Prevalence, genomic characteristics, and pathogenicity of fowl adenovirus 2 in Southern China. Poult Sci 2024; 103:103177. [PMID: 37980763 PMCID: PMC10685031 DOI: 10.1016/j.psj.2023.103177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/25/2023] [Accepted: 10/06/2023] [Indexed: 11/21/2023] Open
Abstract
In recent years, the occurrence of fowl adenovirus 2 (FAdV-2) has been on the rise in China, posing a significant threat to the poultry industry. This study aimed to investigate the epidemiology, phylogenetic relationship, genomic characteristics, and pathogenicity of FAdV-2. The epidemiological analysis revealed the detection of multiple FAdV serotypes, including FAdV-1, FAdV-2, FAdV-3, FAdV-4, FAdV-8a, FAdV-8b, and FAdV-11 serotypes. Among them, FAdV-2 exhibited the highest proportion, accounting for 21.05% (8/38). The complete genomes of these 8 FAdV-2 strains were sequenced. Genetic evolution analysis indicated that these FAdV-2 strains formed a separate branch within the FAdV-D group, sharing 94.60 to 97.90% nucleotide similarity with the reference FAdV-2 and FAdV-11 strains. Notably, the recombination analysis revealed that 5 out of the 8 FAdV-2 strains, exhibited recombination events between FAdV-2 and FAdV-11. The recombination regions involved Hexon, Fiber, ORF19 genes and 3' end. Furthermore, pathogenicity experiments demonstrated that recombinant FAdV-2 XX strain is capable of inducing mortality rate of 66.70% and causing more severe hepatitis hydropericardium syndrome (HHS) in 6-wk-old specific-pathogen-free chickens. These findings contribute to our understanding of the prevalence, genomic characteristics, and the pathogenicity of FAdV-2, providing foundations for FAdV-2 vaccine development.
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Affiliation(s)
- Junqin Zhang
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China
| | - Zimin Xie
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China; South China Agricultural University, Guangzhou, PR China
| | - Yanlin Pan
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China; Zhongkai University of Agriculture and Engineering, Guangzhou, PR China
| | - Zuoxin Chen
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China; College of Life Science and Engineering, Foshan University, Foshan, PR China
| | - Yunzhen Huang
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China
| | - Linlin Li
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China
| | - Jiawen Dong
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China
| | - Yong Xiang
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China
| | - Qi Zhai
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China
| | - Xingying Li
- Guangdong VETCELL Bio-Tech Co., Ltd., Foshan, PR China
| | - Minhua Sun
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China
| | - Shujian Huang
- College of Life Science and Engineering, Foshan University, Foshan, PR China
| | - Ming Liao
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory for prevention and control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs; Key Laboratory of Livestock Disease Prevention and Treatment of Guangdong Province, Guangzhou, Guangdong, PR China; Zhongkai University of Agriculture and Engineering, Guangzhou, PR China.
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Lai J, Yang L, Chen F, He X, Zhang R, Zhao Y, Gao G, Mu W, Chen X, Luo S, Ren T, Xiang B. Prevalence and Molecular Characteristics of FAdV-4 from Indigenous Chicken Breeds in Yunnan Province, Southwestern China. Microorganisms 2023; 11:2631. [PMID: 38004643 PMCID: PMC10673041 DOI: 10.3390/microorganisms11112631] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Fowl adenovirus-induced hepatitis-pericardial effusion syndrome outbreaks have been increasingly reported in China since 2015, resulting in substantial economic losses to the poultry industry. The genetic diversity of indigenous chicken results in different immune traits, affecting the evolution of these viruses. Although the molecular epidemiology of fowl adenovirus serotype 4 (FAdV-4) has been well studied in commercial broiler and layer chickens, the prevalence and genetic characteristics of FAdV-4 in indigenous chickens remain largely unknown. In this study, samples were collected from six indigenous chicken breeds in Yunnan province, China. FAdV-positive samples were identified in five of the six indigenous chicken populations via PCR and 10 isolates were obtained. All FAdVs belonged to serotype FAdV-4 and species FAdV-C. The hexon, fiber, and penton gene sequence comparison analysis demonstrated that the prevalence of FAdV-4 isolates in these chickens might have originated from other provinces that exported chicks and poultry products to Yunnan province. Moreover, several distinct amino acid mutations were firstly identified in the major structural proteins. Our findings highlighted the need to decrease inter-regional movements of live poultry to protect indigenous chicken genetic resources and that the immune traits of these indigenous chickens might result in new mutations of FAdV-4 strains.
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Affiliation(s)
- Jinyu Lai
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Liangyu Yang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Fashun Chen
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Xingchen He
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Rongjie Zhang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Yong Zhao
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Gan Gao
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Weiwu Mu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Xi Chen
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Shiyu Luo
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
| | - Tao Ren
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Bin Xiang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
- Center for Poultry Disease Control and Prevention, Yunnan Agricultural University, Kunming 650201, China
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Wang T, Meng F, Chen C, Shen Y, Li P, Xu J, Feng Z, Qu X, Wang F, Li B, Liu M. Pathogenicity and epidemiological survey of fowl adenovirus in Shandong Province from 2021 to 2022. Front Microbiol 2023; 14:1166078. [PMID: 37234528 PMCID: PMC10206033 DOI: 10.3389/fmicb.2023.1166078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/12/2023] [Indexed: 05/28/2023] Open
Abstract
In recent years, the poultry industry had been markedly affected by adenoviral diseases such as hydropericardium syndrome and inclusion body hepatitis caused by fowl adenovirus (FAdV), which have become increasingly prevalent in China. Shandong Province, China, is an important area for poultry breeding where various complex and diverse FAdV serotypes were isolated. However, the dominant strains and their pathogenic characteristics are not yet reported. Therefore, a pathogenicity and epidemiological survey of FAdV was conducted, showing that the local dominant serotypes of FAdV epidemics were FAdV-2, FAdV-4, FAdV-8b, and FAdV-11. Their mortality rates in the 17-day-old specific-pathogen-free (SPF) chicks ranged from 10 to 80%; clinical signs included mental depression, diarrhea, and wasting. The maximum duration of viral shedding was 14 days. The highest incidence in all infected groups was on days 5-9, and then gradual regression occurred thereafter. The most pronounced symptoms occurred in chicks infected with FAdV-4, including pericardial effusion and inclusion body hepatitis lesions. Our results add to the current epidemiological data on FAdV in poultry flocks in Shandong and elucidate the pathogenicity of dominant serotypes. This information may be important for FAdV vaccine development and comprehensive epidemic prevention and control.
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Affiliation(s)
- Tailong Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Fanliang Meng
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Changxiu Chen
- Veterinary Clinical Laboratory, College of Agricultural and Forestry Sciences, Linyi University, Linyi, China
| | - Yesheng Shen
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Peixun Li
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Jie Xu
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Zhaoyang Feng
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Xiuchao Qu
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Fuyong Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Baoquan Li
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Mengda Liu
- Division of Zoonoses Surveillance, China Animal Health and Epidemiology Center, Qingdao, China
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Wang K, Liu C, Du X, Ma Y, Chen L, Cao S, Lu J, Li Y, Si Z. Complete genome sequence and pathogenicity analysis of a highly pathogenic FAdV-4 strain. Res Vet Sci 2023; 159:84-92. [PMID: 37104993 DOI: 10.1016/j.rvsc.2023.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023]
Abstract
Fowl adenovirus serotype 4 (FAdV-4) is a double-stranded DNA virus that mainly infects broiler chickens and has caused huge economic losses to the poultry industry. Recently, an FAdV-4 strain, SDLC202009, the causative pathogen of hydropericardium-hepatitis syndrome (HHS) in Liaocheng, Shandong, was isolated from commercial laying hens and propagated in specific pathogen free SPF chicken embryos. Pathogenicity studies showed that SDLC202009 could infect SPF chicken embryos and chickens, with a mortality rate of 100%. The complete genome was sequenced, and phylogenetic analysis showed that SDLC202009 belonged to the FAdV-4 cluster, with a genome length of 43, 077 bp. The SDLC202009 had 99.9% identity with the JSJ13 and SD1601, which were recently isolated in China. Compared to the recently isolated strain in China, SDLC202009 had deleted open reading frame 19 (ORF19), ORF27, ORF48, and ORF0. SDLC202009 harbored amino acid site mutations in the main structural proteins hexon, fiber1, and fiber2 similar with those in highly pathogenic strains. Furthermore, SDLC202009 showed unique mutations in hexon A571P, fiber1 E216K, and fiber2 N98K. In summary, our findings provide theoretical support for prevention and control of the HHS.
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Affiliation(s)
- Kaili Wang
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China
| | - Cheng Liu
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China.
| | - Xusheng Du
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China
| | - Ye Ma
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China
| | - Lele Chen
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China
| | - Shenliang Cao
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China.
| | - Jianbiao Lu
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China
| | - Yubao Li
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China.
| | - Zhenshu Si
- Liaocheng University Agricultural Science and Engineering School, No 1, Hunan Street, Dongchangfu District, Liaocheng City, Shandong Province 252000, China.
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Fan Q, Xie Z, Zhang Y, Xie Z, Xie L, Huang J, Zeng T, Wang S, Luo S, Li M. A multiplex fluorescence-based loop-mediated isothermal amplification assay for identifying chicken parvovirus, chicken infectious anaemia virus, and fowl aviadenovirus serotype 4. Avian Pathol 2023; 52:128-136. [PMID: 36622371 DOI: 10.1080/03079457.2022.2159326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Chicken parvovirus (ChPV), chicken infectious anaemia virus (CIAV) and fowl adenovirus serotype 4 (FAdV-4) are avian viruses that have emerged in recent years and have endangered the global poultry industry, causing great economic loss. In this study, a multiplex fluorescence-based loop-mediated isothermal amplification (mLAMP) assay for detecting ChPV, CIAV and FAdV-4 was developed to simultaneously diagnose single and mixed infections in chickens. Three primer sets and composite probes were designed according to the conserved regions of the NS gene of ChPV, VP1 gene of CIAV and hexon gene of FAdV-4. Each composite probe was labelled with a different fluorophore, which was detached to release the fluorescence signal after amplification. The target viruses were distinguished based on the colour of the mLAMP products. The mLAMP assay was shown to be sensitive, with detection limits of 307 copies of recombinant plasmids containing the ChPV target genes, 749 copies of CIAV and 648 copies of FAdV-4. The assay exhibited good specificity and no cross-reactivity with other symptomatically related avian viruses. When used on field materials, the results of the mLAMP assay were in 100% agreement with those of the previously published PCR assay. The mLAMP assay is rapid, economical, sensitive and specific, and the results of amplification are directly observable by eye. Therefore, the mLAMP assay is a useful tool for the clinical detection of ChPV, CIAV and FAdV-4 and can be applied in rural areas.
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Affiliation(s)
- Qing Fan
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
| | - Zhixun Xie
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
| | - Yanfang Zhang
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
| | - Zhiqin Xie
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
| | - Liji Xie
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
| | - Jiaoling Huang
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
| | - Tingting Zeng
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
| | - Sheng Wang
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
| | - Sisi Luo
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
| | - Meng Li
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, People's Republic of China
- Key Laboratory of China-ASEAN (Guangxi) Cross-border Animal Disease Prevention and Control, Ministry of Agriculture and Rural Affairs, Nanning, People's Republic of China
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An Inactivated Novel Trivalent Vaccine Provides Complete Protection against FAdV-4 Causing Hepatitis-Hydropericardium Syndrome and FAdV-8b/-11 Causing Inclusion Body Hepatitis. Transbound Emerg Dis 2023. [DOI: 10.1155/2023/5122382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Outbreaks of hepatitis-hydropericardium syndrome (HHS) caused by fowl adenovirus serotype 4 (FAdV-4) and inclusion body hepatitis (IBH) related to FAdV-8b and FAdV-11 have been increased in chickens in China since 2015. Clinical concurrent infections of FAdV-4, FAdV-8b, and FAdV-11 are quite common, yet there are no commercially available trivalent vaccines against infection by these three serotypes. In our previous study, a bivalent vaccine based on a recombinant FAdV-4, of which fiber-1 was replaced with the fiber of FAdV-8b, has been developed. In this study, a novel recombinant rFAdV-4-fiber/8b + 11 was constructed by inserting FAdV-11 fiber gene into the 1966-bp deletion region of rFAdV-4-fiber/8b genome. The in vitro replication ability of the rFAdV-4-fiber/8b + 11 was similar to the parental FAdV-4. One dose immunization with the inactivated rFAdV-4-fiber/8b + 11 vaccine generated robust immune responses against FAdV-4, FAdV-8b, and FAdV-11, and provided efficient clinical protection against FAdV-4, FAdV-8b, and FAdV-11 challenge. This study provides a novel strategy for developing potential trivalent vaccines for the prevention and control of HHS and IBH.
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Chavan VG, Awandkar SP, Kulkarni MB, Chavhan SG, Kulkarni RC, Agnihotri AA. Molecular phylodynamics of fowl adenovirus serotype 11 and 8b from inclusion body hepatitis outbreaks. Virus Genes 2023; 59:148-157. [PMID: 36315316 DOI: 10.1007/s11262-022-01949-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022]
Abstract
Fowl adenovirus (FAdV) serotypes are involved in a variety of clinical manifestations in poultry and has resulted in substantial economic loss to the poultry farmers. Despite the endemicity of Inclusion body hepatitis (IBH) in South Asian countries, including India, its etiology is not well studied. In western India, the rural poultry flocks obtained from the vaccinated parents were experiencing disease outbreaks with substantial economic losses due to heavy outbreaks and mortality. Therefore, the study was conducted to decipher the molecular epidemiology of the FAdV from field outbreaks in western India. A total of 37 commercial broiler poultry flocks and 29 village poultry flocks of western India were visited during 2019 to 2021. Out of these, 19.14% flocks showed incidence of IBH during the age of 15 to 35 days. The mortality ranged from 3.3 percent to 55.28 percent. The samples were subjected for amplification of partial hexon gene covering loop 1 and loop 2. The results revealed 48.28% positivity by PCR. The sequence analysis identified 14 isolates as species D serotype 11 with 0.97 to 0.99% divergence and two as species E serotype 8b with 0.99% divergence. The FAdV-11 isolates showed amino acid substitutions D195N, T399A, N417S, and N496H. The amino acids I188 and N195 were conserved in FAdV-11. The molecular clock in Bayesian methods was used to determine most common ancestor. The isolates MH379249 and MH379248 were determined the most recent common ancestor for FAdV-11 and FAdV-8b isolates. The analysis suggested evolution of 10 FAdV-11 strains in 2012, and four FAdV-11 strains and two FAdV-8b strains in 2018.
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Affiliation(s)
- Vishranti G Chavan
- Department of Veterinary Microbiology, College of Veterinary & Animal Sciences, Maharashtra Animal & Fishery Sciences University, Udgir, India
| | - Sudhakar P Awandkar
- Department of Veterinary Microbiology, College of Veterinary & Animal Sciences, Maharashtra Animal & Fishery Sciences University, Udgir, India.
| | - Mahesh B Kulkarni
- Department of Veterinary Microbiology, College of Veterinary & Animal Sciences, Maharashtra Animal & Fishery Sciences University, Udgir, India
| | - Sambhaji G Chavhan
- Department of Veterinary Pathology, College of Veterinary & Animal Sciences, Maharashtra Animal & Fishery Sciences University, Udgir, India
| | - Ram C Kulkarni
- Department of Poultry Science, College of Veterinary & Animal Sciences, Maharashtra Animal & Fishery Sciences University, Udgir, India
| | - Aditya A Agnihotri
- Department of Veterinary Microbiology, College of Veterinary & Animal Sciences, Maharashtra Animal & Fishery Sciences University, Udgir, India
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Wang B, Song M, Song C, Zhao S, Yang P, Qiao Q, Cong Y, Wang Y, Wang Z, Zhao J. An inactivated novel chimeric FAdV-4 containing fiber of FAdV-8b provides full protection against hepatitis-hydropericardium syndrome and inclusion body hepatitis. Vet Res 2022; 53:75. [PMID: 36175926 PMCID: PMC9523898 DOI: 10.1186/s13567-022-01093-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/22/2022] [Indexed: 01/07/2023] Open
Abstract
Fowl adenovirus serotype 4 (FAdV-4) and FAdV-8b are causative agents of hepatitis-hydropericardium syndrome (HHS) and inclusion body hepatitis (IBH), respectively. HHS and IBH co-infections were often reported in clinical, yet there are no commercially available bivalent vaccines for prevention and control of both FAdV-4 and -8b. In the present study, a chimeric FAdV-4 was firstly generated by substituting fiber-1 of FAdV-4 with fiber of FAdV-8b. The chimeric virus, rFAdV-4-fiber/8b, exhibited similar replication ability in vitro and pathogenicity in vivo to the parental wild type FAdV-4. A single dosage of vaccination with the inactivated rFAdV-4-fiber/8b induced high antibody titers against fiber-2 of FAdV-4 and fiber of FAdV-8b and provided full protection against FAdV-4 and -8b challenge. These results demonstrated that fiber of FAdV-8b could replace the role of fiber-1 of FAdV-4 in the process of viral infection, and rFAdV-4-fiber/8b could be used to make a potential bivalent vaccine for the control and prevention of HHS and IBH.
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Affiliation(s)
- Baiyu Wang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China
| | - Mingzhen Song
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China
| | - Congcong Song
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China
| | - Shiyi Zhao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China
| | - Panpan Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China
| | - Qilong Qiao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yanfang Cong
- National Animal Health Products for Engineering Technology Research Center, Qingdao, 266111, China
| | - Yanling Wang
- National Animal Health Products for Engineering Technology Research Center, Qingdao, 266111, China
| | - Zeng Wang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China
| | - Jun Zhao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450046, China.
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