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Fedaoui N, Ayed NB, Yahia AB, Hammami W, Touzi H, Triki H. Genetic variability of human adenovirus type 8 causing epidemic and sporadic cases of keratoconjunctivitis. Arch Virol 2016; 161:1469-76. [DOI: 10.1007/s00705-016-2804-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 02/20/2016] [Indexed: 10/22/2022]
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Virology and epidemiology analyses of global adenovirus-associated conjunctivitis outbreaks, 1953-2013. Epidemiol Infect 2016; 144:1661-72. [PMID: 26732024 DOI: 10.1017/s0950268815003246] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This study aimed to compare the virology and epidemiology of epidemic keratoconjunctivitis (EKC), pharyngoconjunctival fever (PCF) and acute haemorrhagic conjunctivitis (AHC) outbreaks worldwide caused by the human adenovirus (HAdV) from 1953 to 2013. Eighty-three hexon sequences from 76 conjunctivitis outbreaks were analysed and subtyped using Mega 5.05, Clustal X and SimPlot software. Epidemiology was performed for the area, age and seasonal distribution. A phylogenetic analysis indicated that all the isolates could be divided into three subgenetic lineages, without a common ancestor. The major causes of the outbreaks were Ad8, Ad7 and Ad2 co-infection with enterovirus 70 (EV70) in EKC, PCF and AHC, respectively. The epidemiological findings suggested that EKC and AHC were circulating predominantly in Asia during the early winter and spring, whereas PCF was circulating mainly in China, Australia and the United States during the summer. This study suggests that EKC, AHC and PCF outbreaks have different circulating patterns throughout the world and are caused by different adenovirus serotypes. A global surveillance system should be established to monitor conjunctivitis outbreaks in the future.
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Adhikary AK, Banik U. Human adenovirus type 8: the major agent of epidemic keratoconjunctivitis (EKC). J Clin Virol 2014; 61:477-86. [PMID: 25464969 DOI: 10.1016/j.jcv.2014.10.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 10/20/2014] [Accepted: 10/25/2014] [Indexed: 11/25/2022]
Abstract
Human adenovirus type 8 (HAdV-8) is the most common causative agent of a highly contagious eye disease known as epidemic keratoconjunctivitis (EKC). HAdV-8 strains have been classified into genome types HAdV-8A to 8K and HAdV/D1 to D12 according to restriction endonuclease analysis. This review focuses on the significance of HAdV-8 as an agent of EKC. Molecular analysis of HAdV-8 genome types HAdV-53 and HAdV-54 was performed to reveal potential genetic variation in the hexon and fiber, which might affect the antigenicity and tropism of the virus, respectively. On the basis of the published data, three patterns of HAdV-8 genome type distribution were observed worldwide: (1) genome types restricted to a microenvironment, (2) genome types distributed within a country, and (3) globally dispersed genome types. Simplot and zPicture showed that the HAdV-8 genome types were nearly identical to each other. HAdV-54 is very close to the HAdV-8P, B and E genomes, except in the hexon. In a restriction map, HAdV-8P, B, and E share a very high percentage of restriction sites with each other. Hypervariable regions (HVRs) of the hexon were conserved and were 100% identical among the genome types. The fiber knob of HAdV-8P, A, E, J and HAdV-53 were 100% identical. In phylogeny, HVRs of the hexon and fiber knob of the HAdV-8 genome types segregated into monophyletic clusters. Neutralizing antibodies against one genome type will provide protection against other genome types, and the selection of future vaccine strains would be simple due to the stable HVRs. Molecular analysis of whole genomes, particularly of the capsid proteins of the remaining genome types, would be useful to substantiate our observations.
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Affiliation(s)
- Arun Kumar Adhikary
- Unit of Microbiology, Faculty of Medicine, AIMST University, 08100 Bedong, Semeling, Kedah Darul Aman, Malaysia.
| | - Urmila Banik
- Unit of Pathology, Faculty of Medicine, AIMST University, 08100 Bedong, Semeling, Kedah Darul Aman, Malaysia
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Tohma K, Bayasgalan N, Suzuki A, Darma B, Oshitani H, Nymadawa P. Detection and serotyping of human adenoviruses from patients with influenza-like illness in mongolia. Jpn J Infect Dis 2012; 65:289-94. [PMID: 22814149 DOI: 10.7883/yoken.65.289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Human adenoviruses (HAdVs) are responsible for approximately 5%-10% of acute respiratory infections. The serotypes of commonly detected respiratory HAdV in Asian countries are diverse. However, there are no well-documented reports of circulating HAdV serotypes in Mongolia. Between January 2010 and May 2011, 1,950 influenza-negative samples from patients with influenza-like illness, including eye swabs from patients with eye symptoms, were screened for HAdV, and 40 samples (2.1%) were positive for HAdVs. Among these 40 samples, 31 samples were positive for the hexon gene used in phylogenetic analysis, as determined by PCR. We identified 7 different serotypes. We constructed the phylogenetic trees of HAdV-B7 and HAdV-B3, the 2 most commonly detected serotypes in this study. All detected HAdV-B7 and -B3 Mongolian strains had identical sequences. HAdV-D8, known to be associated with epidemic keratoconjunctivitis (EKC), was detected from nasopharyngeal and eye swabs. There was no difference between the amino acid sequences of the hexon and fiber genes that may affect tissue tropism in Mongolian strains and those in EKC-causing strains.
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Affiliation(s)
- Kentaro Tohma
- Department of Virology, Tohoku University School of Medicine, Sendai, Japan
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Maranhão AG, Soares CC, Albuquerque MCM, Santos N. Molecular epidemiology of adenovirus conjunctivitis in Rio de Janeiro, Brazil, between 2004 and 2007. Rev Inst Med Trop Sao Paulo 2009; 51:227-9. [PMID: 19739005 DOI: 10.1590/s0036-46652009000400010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Viral conjunctivitis is a common, highly contagious disease often caused by adenovirus. We investigate the frequency of adenoviral conjunctivitis in the population of Rio de Janeiro, Brazil, between March 2004 and May 2007 and identified the predominant serotype circulating among this population. Seventy-five ocular swabs were collected from 66 patients with clinical presentation of conjunctivitis. The specimens were analyzed for detection of adenovirus (AdV) by polymerase chain reaction (PCR). The PCR products were further analyzed for virus typing by sequence analysis and/or heteroduplex mobility assay (HMA). Forty-five samples (60%) were positive for AdV of which 21 samples were typed as AdV19 (46.7%), 7 AdV8 (15.5%), 3 AdV31 (6.7%), and one each AdV1, AdV2, AdV3, AdV4 and AdV6. For nine samples the serotype was not determined. AdV19 was the predominant serotype circulating in Rio de Janeiro during the studied period.
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Affiliation(s)
- Adriana G Maranhão
- Departamento de Virologia, Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Walsh MP, Chintakuntlawar A, Robinson CM, Madisch I, Harrach B, Hudson NR, Schnurr D, Heim A, Chodosh J, Seto D, Jones MS. Evidence of molecular evolution driven by recombination events influencing tropism in a novel human adenovirus that causes epidemic keratoconjunctivitis. PLoS One 2009; 4:e5635. [PMID: 19492050 PMCID: PMC2685984 DOI: 10.1371/journal.pone.0005635] [Citation(s) in RCA: 176] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Accepted: 04/08/2009] [Indexed: 11/19/2022] Open
Abstract
In 2005, a human adenovirus strain (formerly known as HAdV-D22/H8 but renamed here HAdV-D53) was isolated from an outbreak of epidemic keratoconjunctititis (EKC), a disease that is usually caused by HAdV-D8, -D19, or -D37, not HAdV-D22. To date, a complete change of tropism compared to the prototype has never been observed, although apparent recombinant strains of other viruses from species Human adenovirus D (HAdV-D) have been described. The complete genome of HAdV-D53 was sequenced to elucidate recombination events that lead to the emergence of a viable and highly virulent virus with a modified tropism. Bioinformatic and phylogenetic analyses of this genome demonstrate that this adenovirus is a recombinant of HAdV-D8 (including the fiber gene encoding the primary cellular receptor binding site), HAdV-D22, (the epsilon determinant of the hexon gene), HAdV-D37 (including the penton base gene encoding the secondary cellular receptor binding site), and at least one unknown or unsequenced HAdV-D strain. Bootscanning analysis of the complete genomic sequence of this novel adenovirus, which we have re-named HAdV-D53, indicated at least five recombination events between the aforementioned adenoviruses. Intrahexon recombination sites perfectly framed the epsilon neutralization determinant that was almost identical to the HAdV-D22 prototype. Additional bootscan analysis of all HAdV-D hexon genes revealed recombinations in identical locations in several other adenoviruses. In addition, HAdV-D53 but not HAdV-D22 induced corneal inflammation in a mouse model. Serological analysis confirmed previous results and demonstrated that HAdV-D53 has a neutralization profile representative of the epsilon determinant of its hexon (HAdV-D22) and the fiber (HAdV-D8) proteins. Our recombinant hexon sequence is almost identical to the hexon sequences of the HAdV-D strain causing EKC outbreaks in Japan, suggesting that HAdV-D53 is pandemic as an emerging EKC agent. This documents the first genomic, bioinformatic, and biological descriptions of the molecular evolution events engendering an emerging pathogenic adenovirus.
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Affiliation(s)
- Michael P. Walsh
- Department of Bioinformatics and Computational Biology, George Mason University, Manassas, Virginia, United States of America
| | - Ashish Chintakuntlawar
- Howe Laboratory, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Christopher M. Robinson
- Howe Laboratory, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ijad Madisch
- Insitut für Virologie, Medizinische Hochschule, Hannover, Germany
| | - Balázs Harrach
- Veterinary Medical Research Institute, Hungarian Academy of Sciences, Budapest, Hungary
| | - Nolan R. Hudson
- Clinical Investigation Facility, David Grant USAF Medical Center, Travis AFB, California, United States of America
| | - David Schnurr
- Viral and Rickettsial Disease Laboratory, California Department of Public Health, Richmond, California, United States of America
| | - Albert Heim
- Insitut für Virologie, Medizinische Hochschule, Hannover, Germany
| | - James Chodosh
- Howe Laboratory, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Donald Seto
- Department of Bioinformatics and Computational Biology, George Mason University, Manassas, Virginia, United States of America
| | - Morris S. Jones
- Clinical Investigation Facility, David Grant USAF Medical Center, Travis AFB, California, United States of America
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Stability of the seven hexon hypervariable region sequences of adenovirus types 1–6 isolated in Yamagata, Japan between 1988 and 2007. Virus Res 2009; 140:32-9. [DOI: 10.1016/j.virusres.2008.10.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Revised: 10/29/2008] [Accepted: 10/29/2008] [Indexed: 11/24/2022]
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Matsui K, Shimizu H, Yoshida A, Nagaoka E, Nishio O, Okuda K. Monitoring of adenovirus from conjunctival scrapings in Japan during 2005–2006. J Med Virol 2008; 80:997-1003. [DOI: 10.1002/jmv.21175] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bialasiewicz A. Adenoviral keratoconjunctivitis. Sultan Qaboos Univ Med J 2007; 7:15-23. [PMID: 21654940 PMCID: PMC3086413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
Acute epibulbar infections in humans are one of the most frequently diagnosed eye diseases. The majority of these are thought to be caused by the adenovirus. This review focuses on the features of the human adenovirus eye diseases, mode of transmission, signs and symptoms, available interventions, and preventive measures. It is concluded that infection control is still widely accepted to be the key to the management of human adenovirus infection in order to prevent the spread, individual suffering and economic damage.
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Matsui K, Saha S, Saitoh M, Mizuki N, Itoh N, Okada E, Yoshida A, Xin KQ, Nishio O, Okuda K. Isolation and identification of adenovirus from conjunctival scrapings over a two-year period (between 2001 and 2003) in Yokohama, Japan. J Med Virol 2007; 79:200-5. [PMID: 17177307 DOI: 10.1002/jmv.20779] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Over a 2-year period between 2001 and 2003, a total of 115 conjunctival scrapings were collected from patients with keratoconjuctivitis from several hospitals in Yokohama, Japan. Out of 115, 94 (82.4%) cases of adenoviruses were detected by polymerase chain reaction (PCR); 60 (52.1%) by cell culture isolation; and 16 (14.0%) by enzyme-linked immunosorbent assay (ELISA). The serotypes were determined by PCR- restriction fragment length polymorphism analysis (PCR-RFLP) and by the neutralization test (NT). PCR-RFLP was performed using a combination of endonucleases such as HhaI, AluI, and HaeIII. Of the 94 PCR-positive samples, the serotypes of 91 (96.8%) were identified by PCR-RFLP analysis (adenovirus 3: 50%, 4: 11%, and 8: 32%). Out of the 115 samples, 60 samples were identified by the neutralization (adenovirus 3, 4, 7, and 8). When both PCR-RFLP and the neutralization techniques were used, 53.2%, 11.7%, 1.1%, and 34% of the samples were identified as adenovirus 3, 4, 7, and 8, respectively. In contrast to the results of a nationwide surveillance report, adenovirus 3 was found as a major cause of keratoconjunctivitis in the Yokohama area. The nationwide surveillance report did not reflect accurately the epidemiological situation in the local area. In order to obtain surveillance data that would be useful for the prevention of an adenovirus conjunctivitis epidemic, it seems that local epidemiology is more important than that nationwide surveillance.
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MESH Headings
- Adenovirus Infections, Human/epidemiology
- Adenovirus Infections, Human/virology
- Adenoviruses, Human/classification
- Adenoviruses, Human/genetics
- Adenoviruses, Human/isolation & purification
- Conjunctiva/virology
- Conjunctivitis, Viral/epidemiology
- Conjunctivitis, Viral/virology
- DNA, Viral/analysis
- DNA, Viral/isolation & purification
- Enzyme-Linked Immunosorbent Assay
- HeLa Cells
- Humans
- Japan/epidemiology
- Keratoconjunctivitis/epidemiology
- Keratoconjunctivitis/virology
- Neutralization Tests
- Polymerase Chain Reaction
- Polymorphism, Restriction Fragment Length
- Serotyping
- Specimen Handling/methods
- Virus Cultivation
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Affiliation(s)
- Kiyohiko Matsui
- Department of Molecular Biodefense Research, Yokohama City University School of Medicine, Fukuura, Yokohama, Japan
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Okada M, Ogawa T, Kubonoya H, Yoshizumi H, Shinozaki K. Detection and sequence-based typing of human adenoviruses using sensitive universal primer sets for the hexon gene. Arch Virol 2006; 152:1-9. [PMID: 16957827 DOI: 10.1007/s00705-006-0842-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2006] [Accepted: 07/21/2006] [Indexed: 10/24/2022]
Abstract
The universal primer sets for identification of human adenovirus (HAdV) targeting hexon gene were designed and applied to 121 clinical samples suspected of HAdV infection. The primer sets amplified at least 20 HAdV reference strains of six species. Of these clinical samples, 81 (66.9%) samples were positive for HAdV. They were classified into 11 serotypes belonging to 5 HAdV species (B-F). The primer sets described here are sensitive and reactive to the broad spectrum of HAdV and are useful for rapid diagnosis of various HAdV infections.
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Affiliation(s)
- M Okada
- Division of Virology, Chiba Prefectural Institute of Public Health, Chiba, Japan
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Ebner K, Pinsker W, Lion T. Comparative sequence analysis of the hexon gene in the entire spectrum of human adenovirus serotypes: phylogenetic, taxonomic, and clinical implications. J Virol 2005; 79:12635-42. [PMID: 16188965 PMCID: PMC1235814 DOI: 10.1128/jvi.79.20.12635-12642.2005] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The adenovirus (AdV) hexon constitutes the major virus capsid protein. The epitopes located on the hexon protein are targets of neutralizing antibodies in vivo, serve in the recognition by cytotoxic T cells, and provide the basis for the classification of adenoviruses into the 51 serotypes known to date. We have sequenced the entire hexon gene from human serotypes with incomplete or no sequence information available (n = 34) and performed a comparative analysis of all sequences. The overall sequence divergence between the 51 human serotypes ranged from 0.7 to 25.4% at the protein level. The sequence information has been exploited to assess the phylogeny of the adenovirus family, and protein distances between the six AdV species (A to F) and among individual serotypes within each species were calculated. The analysis revealed that the differences among serotypes within individual species range from 0.3 to 5.4% in the conserved regions (765 amino acids [aa]) and from 1.5 to 59.6% in the variable regions (154 to 221 aa). Serotypes of different species showed an expectedly greater divergence both in the conserved (5.9 to 12.3%) and variable (49.0 to 74.7%) regions. Construction of a phylogenetic tree revealed three major clades comprising the species B+D+E, A+F, and C, respectively. For serotypes 50 and 51, the original assignment to species B and D, respectively, is not in accordance with the hexon DNA and protein sequence data, which placed serotype 50 within species D and serotype 51 within species B. Moreover, the hexon gene of serotype 16, a member of species B, was identified as the product of recombination between sequences of species B and E. In addition to providing a basis for improved molecular diagnostics and classification, the elucidation of the complete hexon gene sequence in all AdV serotypes yields information on putative epitopes for virus recognition, which may have important implications for future treatment strategies permitting efficient targeting of any AdV serotype.
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Affiliation(s)
- K Ebner
- Division of Molecular Microbiology and Development of Genetic Diagnostics, Children's Cancer Research Institute, Vienna, Austria
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