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Bacterial RecA Protein Promotes Adenoviral Recombination during In Vitro Infection. mSphere 2018; 3:3/3/e00105-18. [PMID: 29925671 PMCID: PMC6010623 DOI: 10.1128/msphere.00105-18] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 06/03/2018] [Indexed: 12/30/2022] Open
Abstract
Adenoviruses are common human mucosal pathogens of the gastrointestinal, respiratory, and genitourinary tracts and ocular surface. Here, we report finding Chi-like sequences in adenovirus recombination hot spots. Adenovirus coinfection in the presence of bacterial RecA protein facilitated homologous recombination between viruses. Genetic recombination led to evolution of an important external feature on the adenoviral capsid, namely, the penton base protein hypervariable loop 2, which contains the arginine-glycine-aspartic acid motif critical to viral internalization. We speculate that free Rec proteins present in gastrointestinal secretions upon bacterial cell death facilitate the evolution of human adenoviruses through homologous recombination, an example of viral commensalism and the complexity of virus-host interactions, including regional microbiota. Adenovirus infections in humans are common and sometimes lethal. Adenovirus-derived vectors are also commonly chosen for gene therapy in human clinical trials. We have shown in previous work that homologous recombination between adenoviral genomes of human adenovirus species D (HAdV-D), the largest and fastest growing HAdV species, is responsible for the rapid evolution of this species. Because adenovirus infection initiates in mucosal epithelia, particularly at the gastrointestinal, respiratory, genitourinary, and ocular surfaces, we sought to determine a possible role for mucosal microbiota in adenovirus genome diversity. By analysis of known recombination hot spots across 38 human adenovirus genomes in species D (HAdV-D), we identified nucleotide sequence motifs similar to bacterial Chi sequences, which facilitate homologous recombination in the presence of bacterial Rec enzymes. These motifs, referred to here as ChiAD, were identified immediately 5′ to the sequence encoding penton base hypervariable loop 2, which expresses the arginine-glycine-aspartate moiety critical to adenoviral cellular entry. Coinfection with two HAdV-Ds in the presence of an Escherichia coli lysate increased recombination; this was blocked in a RecA mutant strain, E. coli DH5α, or upon RecA depletion. Recombination increased in the presence of E. coli lysate despite a general reduction in viral replication. RecA colocalized with viral DNA in HAdV-D-infected cell nuclei and was shown to bind specifically to ChiAD sequences. These results indicate that adenoviruses may repurpose bacterial recombination machinery, a sharing of evolutionary mechanisms across a diverse microbiota, and unique example of viral commensalism. IMPORTANCE Adenoviruses are common human mucosal pathogens of the gastrointestinal, respiratory, and genitourinary tracts and ocular surface. Here, we report finding Chi-like sequences in adenovirus recombination hot spots. Adenovirus coinfection in the presence of bacterial RecA protein facilitated homologous recombination between viruses. Genetic recombination led to evolution of an important external feature on the adenoviral capsid, namely, the penton base protein hypervariable loop 2, which contains the arginine-glycine-aspartic acid motif critical to viral internalization. We speculate that free Rec proteins present in gastrointestinal secretions upon bacterial cell death facilitate the evolution of human adenoviruses through homologous recombination, an example of viral commensalism and the complexity of virus-host interactions, including regional microbiota.
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Zou X, Fan Y, Zhang W, Lu B, Liu Y, Cao B. Metagenomics facilitated complete genome sequencing of adenovirus untyped by real-time PCR. J Infect 2018; 77:158-164. [PMID: 29746952 DOI: 10.1016/j.jinf.2018.04.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 04/11/2018] [Indexed: 01/07/2023]
Affiliation(s)
- Xiaohui Zou
- Department of Pulmonary and Critical Care Medicine, Laboratory of Clinical Microbiology and Infectious Diseases, Center for Respiratory Diseases, China-Japan Friendship Hospital, National Clinical Research Centre for Respiratory Disease, No. 2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Yanyan Fan
- Department of Pulmonary and Critical Care Medicine, Laboratory of Clinical Microbiology and Infectious Diseases, Center for Respiratory Diseases, China-Japan Friendship Hospital, National Clinical Research Centre for Respiratory Disease, No. 2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Wang Zhang
- Department of Pulmonary and Critical Care Medicine, Laboratory of Clinical Microbiology and Infectious Diseases, Center for Respiratory Diseases, China-Japan Friendship Hospital, National Clinical Research Centre for Respiratory Disease, No. 2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Binghuai Lu
- Department of Pulmonary and Critical Care Medicine, Laboratory of Clinical Microbiology and Infectious Diseases, Center for Respiratory Diseases, China-Japan Friendship Hospital, National Clinical Research Centre for Respiratory Disease, No. 2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Yingmei Liu
- Department of Pulmonary and Critical Care Medicine, Laboratory of Clinical Microbiology and Infectious Diseases, Center for Respiratory Diseases, China-Japan Friendship Hospital, National Clinical Research Centre for Respiratory Disease, No. 2, East Yinghua Road, Chaoyang District, Beijing 100029, China
| | - Bin Cao
- Department of Pulmonary and Critical Care Medicine, Laboratory of Clinical Microbiology and Infectious Diseases, Center for Respiratory Diseases, China-Japan Friendship Hospital, National Clinical Research Centre for Respiratory Disease, No. 2, East Yinghua Road, Chaoyang District, Beijing 100029, China.
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Tatsumi C, Iizuka S, Mita T, Wada M, Hanaoka N, Fujimoto T. First Identification of Human Adenovirus 57 (HAdV-57) in Japan. Jpn J Infect Dis 2018; 71:259-263. [PMID: 29709969 DOI: 10.7883/yoken.jjid.2017.476] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Neutralization tests have been routinely used for the identification of human adenovirus C species (HAdV-C) in Japan until 2007. The aim of this study was to clarify the serological cross-reactivity of antiserum that has been used exclusively in Japan and to describe the first identification of HAdV type 57 (HAdV-57) in Japan. Anti-HAdV serum to HAdV-1, 2, 5, and 6 was quantitatively evaluated for cross-reactivity to the HAdV-57 isolates. Anti-HAdV-6 serum neutralized HAdV-57 with a concentration that was 32 to 64-fold higher than what was necessary to neutralize homologous HAdV-6. HAdV-1, 2, and 5 strains were not neutralized by anti HAdV-6 serum. Furthermore, 28 HAdV-6 strains isolated from 6,476 clinical samples were re-examined for HAdVs detected in the Shimane Prefecture of Japan from 2005 to 2014. These 28 strains were re-examined by PCR-sequencing techniques using the penton, hexon, and fiber regions. 3 isolates were determined to be HAdV-57. These data show that HAdV-57 had already invaded Japan as early as 2005, and that HAdV-57 strains were misidentified as HAdV-6.
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Affiliation(s)
- Chika Tatsumi
- Shimane Prefectural Institute of Public Health and Environmental Science
| | - Setsuko Iizuka
- Shimane Prefectural Institute of Public Health and Environmental Science
| | - Tetsuo Mita
- Shimane Prefectural Institute of Public Health and Environmental Science.,Shimane Prefectural Laboratory of Meat Hygiene Inspection Station
| | - Mieko Wada
- Shimane Prefectural Institute of Public Health and Environmental Science.,Shimane Prefectural Medical Affairs and Public Health Division
| | - Nozomu Hanaoka
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases
| | - Tsuguto Fujimoto
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases
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Barnadas C, Schmidt DJ, Fischer TK, Fonager J. Molecular epidemiology of human adenovirus infections in Denmark, 2011-2016. J Clin Virol 2018; 104:16-22. [PMID: 29704734 PMCID: PMC7106356 DOI: 10.1016/j.jcv.2018.04.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 04/09/2018] [Accepted: 04/17/2018] [Indexed: 12/19/2022]
Abstract
We developed new primers to improve genotyping of HAdV D. Six out of seven HAdV species from at least 13 HAdV types were identified. Young children (<5 years old) were more likely to be positive for HAdV. Co-infections with other gastrointestinal or respiratory viruses were common. A HAdV surveillance system is required to monitor circulating species and types.
Background Human adenoviruses (HAdVs) can cause respiratory tract infections, conjunctivitis, diarrhoea and outbreaks have been reported. However, little is known about the disease burden and the molecular epidemiology of HAdV. Objectives To retrospectively perform a molecular characterization of HAdV positive samples received at Statens Serum Institut during the period 2011–2016 and to compare this with demographic information, geographic location, sample collection date and type and co-infection with other viral pathogens. Study design 152 HAdV positive samples were genotyped by Sanger sequencing of a fragment of the hexon gene using published primers along with a newly developed primer set for enhanced genotyping of HAdV D. Phylogenetic analysis was used for genotyping and genotypes were compared with epidemiological information. In addition, HAdV burden and co-infection was evaluated for samples tested in laboratory analysis packages. Results Six out of seven HAdV species were identified and represented by 13 types. Young children (<5 years old) were more likely to be positive for HAdV and co-infections with other gastrointestinal or respiratory viruses were common. Possible outbreaks of ocular infections due to HAdV D could not be confirmed. Conclusion A diverse set of HAdV species were circulating in Denmark in the study period and although possible transmission clusters were identified, this could not be verified with current genotyping methods Young children were commonly affected by HAdV infection and co-infections with other viral pathogens were frequent suggesting a possible underestimation of the real HAdV burden.
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Affiliation(s)
- Céline Barnadas
- European Public Health Microbiology (EUPHEM) Training Programme, European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden; Virus & Microbiological Special Diagnostics, Infectious Disease Preparedness, Statens Serum Institute, Copenhagen, Denmark
| | - Dennis Jelsbak Schmidt
- Virus & Microbiological Special Diagnostics, Infectious Disease Preparedness, Statens Serum Institute, Copenhagen, Denmark
| | - Thea K Fischer
- Virus & Microbiological Special Diagnostics, Infectious Disease Preparedness, Statens Serum Institute, Copenhagen, Denmark; Department of Infectious Diseases and Centre for Global Health, University of Southern Denmark, Denmark
| | - Jannik Fonager
- Virus & Microbiological Special Diagnostics, Infectious Disease Preparedness, Statens Serum Institute, Copenhagen, Denmark.
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Yu J, Xie Z, Zhang T, Lu Y, Fan H, Yang D, Bénet T, Vanhems P, Shen K, Huang F, Han J, Li T, Gao Z, Ren L, Wang J. Comparison of the prevalence of respiratory viruses in patients with acute respiratory infections at different hospital settings in North China, 2012-2015. BMC Infect Dis 2018; 18:72. [PMID: 29422011 PMCID: PMC5806372 DOI: 10.1186/s12879-018-2982-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Accepted: 01/30/2018] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Acute respiratory infections (ARIs) are a great public health challenge globally. The prevalence of respiratory viruses in patients with ARIs attending at different hospital settings is fully undetermined. METHODS Laboratory-based surveillance for ARIs was conducted at inpatient and outpatient settings of 11 hospitals in North China. The first 2-5 patients with ARIs were recruited in each hospital weekly from 2012 through 2015. The presence of respiratory viruses was screened by PCR assays. The prevalence of respiratory viruses was determined and compared between patients at different hospital settings. RESULTS A total of 3487 hospitalized cases and 6437 outpatients/Emergency Department (ED) patients were enrolled. The most commonly detected viruses in the hospitalized cases were respiratory syncytial virus (RSV, 33.3%) in children less than two years old, adenoviruses (13.0%) in patients 15-34 years old, and influenza viruses (IFVs, 9.6%) in patients ≥65 years. IFVs were the most common virus in outpatient/ED patients across all age groups (22.7%). After controlling for the confounders caused by other viruses and covariates, adenoviruses (adjusted odds ratio [aOR]: 3.97, 99% confidence interval [99% CI]: 2.19-7.20) and RSV (aOR: 2.04, 99% CI: 1.34-3.11) were independently associated with increased hospitalization in children, as well as adenoviruses in adults (aOR: 2.14, 99% CI: 1.19-3.85). Additionally, co-infection of RSV with IFVs was associated with increased hospitalization in children (aOR: 12.20, 99% CI: 2.65-56.18). CONCLUSIONS A substantial proportion of ARIs was associated with respiratory viruses in North China. RSV, adenoviruses, and co-infection of RSV and IFVs were more frequent in hospitalized children (or adenoviruses in adults), which might predict the severity of ARIs. Attending clinicians should be more vigilant of these infections.
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Affiliation(s)
- Jianxing Yu
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, IPB, CAMS-Fondation Mérieux, Institute of Pathogen Biology (IPB), Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Zhengde Xie
- Key Laboratory of Major Diseases in Children and National Key Discipline of Pediatrics (Capital Medical University), Ministry of Education, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, No. 56 Nan-li-shi Road, Beijing, 100045, People's Republic of China
| | - Tiegang Zhang
- Beijing Center for Disease Control and Prevention, No.16, Hepingli Middle Avenue of Dongcheng district, Beijing, 100013, People's Republic of China
| | - Yanqin Lu
- Shandong Medicinal Biotechnology Centre, Key Laboratory for Modern Medicine and Technology of Shandong Province, Shandong Academy of Medical Sciences, No. 18877 Jingshi Road, Jinan, Shandong, 250062, People's Republic of China
| | - Hongwei Fan
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Donghong Yang
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, People's Republic of China
| | - Thomas Bénet
- Service d'Hygiène, Epidémiologie et Prévention, Hôpital Edouard Herriot, Lyon, France.,Laboratoire des Pathogènes Emergents - Fondation Mérieux, Centre International de Recherche en Infectiologie (CIRI), Institut National de la Santé et de la Recherche Médicale U1111, Centre National de la Recherche Scientifique, UMR5308, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, 21, Avenue Tony Garnier, 69007, Lyon, France
| | - Philippe Vanhems
- Service d'Hygiène, Epidémiologie et Prévention, Hôpital Edouard Herriot, Lyon, France.,Laboratoire des Pathogènes Emergents - Fondation Mérieux, Centre International de Recherche en Infectiologie (CIRI), Institut National de la Santé et de la Recherche Médicale U1111, Centre National de la Recherche Scientifique, UMR5308, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, 21, Avenue Tony Garnier, 69007, Lyon, France.,INSERM, F-CRIN, I-REIVAC, Lyon Collaborative Center, Lyon, France
| | - Kunling Shen
- Key Laboratory of Major Diseases in Children and National Key Discipline of Pediatrics (Capital Medical University), Ministry of Education, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, No. 56 Nan-li-shi Road, Beijing, 100045, People's Republic of China
| | - Fang Huang
- Beijing Center for Disease Control and Prevention, No.16, Hepingli Middle Avenue of Dongcheng district, Beijing, 100013, People's Republic of China
| | - Jinxiang Han
- Shandong Medicinal Biotechnology Centre, Key Laboratory for Modern Medicine and Technology of Shandong Province, Shandong Academy of Medical Sciences, No. 18877 Jingshi Road, Jinan, Shandong, 250062, People's Republic of China
| | - Taisheng Li
- Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Zhancheng Gao
- Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, 100044, People's Republic of China
| | - Lili Ren
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, IPB, CAMS-Fondation Mérieux, Institute of Pathogen Biology (IPB), Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College, Beijing, 100730, People's Republic of China.
| | - Jianwei Wang
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, IPB, CAMS-Fondation Mérieux, Institute of Pathogen Biology (IPB), Chinese Academy of Medical Sciences (CAMS) & Peking Union Medical College, Beijing, 100730, People's Republic of China.
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Shirani F, Teimoori A, Rashno M, Latifi SM, Karandish M. Using rats as a research model to investigate the effect of human adenovirus 36 on weight gain. ARYA ATHEROSCLEROSIS 2017; 13:167-171. [PMID: 29147126 PMCID: PMC5677319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Recent evidence has shown a positive correlation between obesity and viral infections with a particular emphasis on the human adenovirus-36 (Ad-36). Ad-36 is the first human virus that may increase adiposity in animals, and it is considered as a possible risk factor for obesity in humans; however, the results were not consistent across all the studies. The present study was conducted to examine the influence of Ad-36 infection on obesity in a rat model. METHODS Eight-week-old male Wistar rats weighing 170-240 gram (g), were randomly divided into two groups, infection group (48 rats) and a control group (12 rats). The rats in the infection group were infected with human Ad-36. All rats were given free access to a normal chow diet and water. They were weighed weekly. RESULTS The mean ± standard deviation (SD) body weights were 229.0 ± 25.9 g and 232.3 ± 16.6 g in the infection and control groups, respectively at the time of infection. The mean ± SD body weight of the infection group (304.0 ± 39.0 g) was higher than the control group (301.0 ± 36.5 g) at 12 weeks post-infection (P = 0.82). Although two groups had approximately same food intakes, the mean change in body weight was greater in the infection group than the control group (75.8 ± 27.9 g vs. 70.8 ± 24.5 g) but it was not significant (P = 0.57). CONCLUSION We did not find a statistically significant association between weight gain and Ad-36 infection in the rat model. It seems that longer follow-up duration is needed to develop a significant weight gain in the infected rats. Rats can be used as a good animal model for further investigations about Ad-36-induced obesity, provided not to rely merely on weight measurements. Evaluating body composition or histopathological assessments are suggested.
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Affiliation(s)
- Fatemeh Shirani
- PhD Candidate, Nutrition and Metabolic Diseases Research Center AND School of Paramedical, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ali Teimoori
- Assistant Professor, Health Research Institute, Infectious and Tropical Diseases Research Center AND School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Rashno
- Assistant Professor, Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyed Mahmoud Latifi
- Lecturer, Diabetes Research Center AND Department of Statistics and Epidemiology, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Majid Karandish
- Professor, Nutrition and Metabolic Diseases Research Center AND School of Paramedical, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Niang MN, Diop NS, Fall A, Kiori DE, Sarr FD, Sy S, Goudiaby D, Barry MA, Fall M, Dia N. Respiratory viruses in patients with influenza-like illness in Senegal: Focus on human respiratory adenoviruses. PLoS One 2017; 12:e0174287. [PMID: 28328944 PMCID: PMC5362214 DOI: 10.1371/journal.pone.0174287] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 03/06/2017] [Indexed: 12/20/2022] Open
Abstract
Background Human adenoviruses (HAdVs) are highly contagious pathogens that are associated with a wide spectrum of human illnesses involving the respiratory tract. In the present study, we investigate the epidemiologic and viral molecular features of HAdVs circulating in Senegal after 4 consecutive years of sentinel surveillance of influenza-like Illness cases. Methodology and results From January 2012 to December 2015 swabs were collected from consenting ILI outpatients. Adenoviral detection is performed by rRT-PCR with the Anyplex™ II RV16 Detection kit (Seegene) and molecular characterization was performed using a partial hexon gene sequence. 6381 samples were collected. More than half of patients (51.7%; 3297/6381) were children of ≤ 5 years. 1967 (30.8%) were positive for HAdV with 1561 (79.4%) found in co-infection with at least one another respiratory virus. The most common co-detections were with influenza viruses (53.1%; 1045/1967), rhinoviruses (30%; 591/1967), enteroviruses (18.5%; 364/1967) and RSV (13.5%; 266/1967). Children under 5 were the most infected group (62.2%; 1224/1967; p <0.05). We noted that HAdV was detected throughout the year at a high level with detection peaks of different amplitudes without any clear seasonality. Phylogenetic analysis revealed species HAdV-C in majority, species HAdV-B and one HAdV- 4 genome type. The 9 HAdV-B species like strains from Senegal grouped with genome types HAdV-7, HAdV-55 and HAdV-11 as shown by a phylogenetic branch with a high bootstrap value of (88%). Conclusion In conclusion, the results of the present study suggest strong year-round HAdV activity in Senegal, especially in children up to 5 years of age. Molecular studies revealed that the dominant species in circulation in patients with ILI appears to be HAdV-C and HAdV-B species. The circulation of though HAdV-7 and HAdV-55 genome types is of note as these serotypes are recognized causes of more severe and even fatal acute respiratory infections.
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Affiliation(s)
| | - Ndeye Sokhna Diop
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Amary Fall
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Davy E. Kiori
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Fatoumata Diene Sarr
- Institut Pasteur de Dakar, Unité d’Epidémiologie des maladies infectieuses, Dakar, Sénégal
| | - Sara Sy
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Déborah Goudiaby
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
| | - Mamadou Aliou Barry
- Institut Pasteur de Dakar, Unité d’Epidémiologie des maladies infectieuses, Dakar, Sénégal
| | - Malick Fall
- Département de Biologie Animale Faculté des Sciences et Techniques Université Cheikh Anta DIOP de Dakar, Dakar, Senegal
| | - Ndongo Dia
- Institut Pasteur de Dakar, Unité de Virologie Médicale, Dakar, Sénégal
- * E-mail:
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Sun HQ, Zhang XX, Kuang XN, Gu WJ, Chen ZR, Yan YD, Wang YQ, Zhu CH, Dong HT, Zhang XL, Ji W. [Epidemiological analysis of 440 cases of respiratory adenovirus infections in children from the Suzhou area between 2006 and 2015]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2017; 19:34-38. [PMID: 28100319 PMCID: PMC7390133 DOI: 10.7499/j.issn.1008-8830.2017.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 09/27/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To study the epidemiological characteristics of respiratory adenovirus (ADV) infections in children from the Suzhou area, China. METHODS The clinical data of ADV-positive children out of 35 529 children with respiratory tract infections who were hospitalized in the Children's Hospital of Soochow University between January 2006 and December 2015 were retrospectively studied. RESULTS Of the 35 529 children with respiratory tract infections, 440 (1.24%) were ADV-positive. There was no significant difference in the rate of ADV infections between boys and girls (1.18% vs 1.34%). The ADV infection rates of children at the age of <1 year old, 1-3 years old, 3-7 years old and 7-14 years old were 0.39% (71/18 002), 1.12% (103/9 191), 3.14% (201/6 398), and 3.35%( 65/1 938) respectively and the rate increased with age (P<0.01). The ADV infection rates in spring [1.85%(60/8 658)] and summer [2.20%(189/8 606)] were significantly higher than in autumn [0.30%(27/8 952)] and winter [0.69%(64/9 313)] (P<0.01). CONCLUSIONS The ADV infection rate is increased with age in the children from the Suzhou area, but it is not associated with gender. ADV infections are more common in spring and summer.
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Affiliation(s)
- Hui-Quan Sun
- Department of Respiratory Disease, Children's Hospital of Soochow University, Suzhou, Jiangsu 215003, China.
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Sun HQ, Zhang XX, Kuang XN, Gu WJ, Chen ZR, Yan YD, Wang YQ, Zhu CH, Dong HT, Zhang XL, Ji W. [Epidemiological analysis of 440 cases of respiratory adenovirus infections in children from the Suzhou area between 2006 and 2015]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2017; 19:34-38. [PMID: 28100319 PMCID: PMC7390133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 09/27/2016] [Indexed: 11/12/2023]
Abstract
OBJECTIVE To study the epidemiological characteristics of respiratory adenovirus (ADV) infections in children from the Suzhou area, China. METHODS The clinical data of ADV-positive children out of 35 529 children with respiratory tract infections who were hospitalized in the Children's Hospital of Soochow University between January 2006 and December 2015 were retrospectively studied. RESULTS Of the 35 529 children with respiratory tract infections, 440 (1.24%) were ADV-positive. There was no significant difference in the rate of ADV infections between boys and girls (1.18% vs 1.34%). The ADV infection rates of children at the age of <1 year old, 1-3 years old, 3-7 years old and 7-14 years old were 0.39% (71/18 002), 1.12% (103/9 191), 3.14% (201/6 398), and 3.35%( 65/1 938) respectively and the rate increased with age (P<0.01). The ADV infection rates in spring [1.85%(60/8 658)] and summer [2.20%(189/8 606)] were significantly higher than in autumn [0.30%(27/8 952)] and winter [0.69%(64/9 313)] (P<0.01). CONCLUSIONS The ADV infection rate is increased with age in the children from the Suzhou area, but it is not associated with gender. ADV infections are more common in spring and summer.
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Affiliation(s)
- Hui-Quan Sun
- Department of Respiratory Disease, Children's Hospital of Soochow University, Suzhou, Jiangsu 215003, China.
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Lee HJ, Seo YE, Han SB, Jeong DC, Kang JH. Clinical Impact of Mixed Respiratory Viral Infection in Children with Adenoviral Infection. Infect Chemother 2016; 48:309-316. [PMID: 27883373 PMCID: PMC5204010 DOI: 10.3947/ic.2016.48.4.309] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 09/25/2016] [Indexed: 01/24/2023] Open
Abstract
Background Although adenovirus (ADV) infection occurs steadily all year round in Korea and the identification of respiratory viral coinfections has been increasing following the introduction of multiplex real-time polymerase chain reaction tests, the clinical impact of viral coinfection in children with ADV infection has rarely been reported. Materials and Methods Medical records of children diagnosed with ADV infection were retrospectively reviewed. The enrolled children were divided into two groups based on the identified respiratory viruses: ADV group and coinfection group. Clinical and laboratory parameters were compared between the two groups. Results In total, 105 children (60 males and 45 females) with a median age of 29 months (range: 0-131 months) diagnosed with an ADV infection were enrolled. Fever (99.0%) was by far the most frequent symptom, followed by respiratory (82.9%), and gastrointestinal (22.9%) symptoms. Upper and lower respiratory tract infections were diagnosed in 56 (53.3%), and 32 (30.5%) children, respectively. Five (4.8%) children received oxygen therapy, and no child died due to ADV infection. Coinfection was diagnosed in 32 (30.5%) children, with rhinovirus (46.9%), and respiratory syncytial virus (21.9%) being the most frequent. The proportions of children younger than 24 months (P <0.001), with underlying medical conditions (P = 0.020), and diagnosed with lower respiratory tract infection (P = 0.011) were significantly higher in the coinfection group than in the ADV group. In a multivariate analysis, only the younger age was significantly associated with coinfection (P <0.001). Although more children in the coinfection group received oxygen therapy (P = 0.029), the duration of fever and hospitalization was not significantly different between the two groups. Conclusion Respiratory viral coinfection with ADV occurred more frequently in children younger than 24 months of age compared with children aged 24 months or older. Respiratory viral coinfection may increase the severity of ADV infection, however, appropriate therapy prevented prolonged hospitalization and poor prognosis due to coinfection.
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Affiliation(s)
- Hyun Jun Lee
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Young Eun Seo
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung Beom Han
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea.,The Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea.
| | - Dae Chul Jeong
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea.,The Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jin Han Kang
- Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, Korea.,The Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Wang YF, Shen FC, Wang SL, Kuo PH, Tsai HP, Liu CC, Wang JR, Chi CY. Molecular Epidemiology and Clinical Manifestations of Adenovirus Respiratory Infections in Taiwanese Children. Medicine (Baltimore) 2016; 95:e3577. [PMID: 27149483 PMCID: PMC4863800 DOI: 10.1097/md.0000000000003577] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Human adenoviruses (HAdVs) are important causes of respiratory infections in children. They usually cause mild upper respiratory symptoms, but they can also produce severe pneumonia and other complications. The aims of this retrospective study were to better define the molecular epidemiology of respiratory adenoviruses circulating in Taiwanese children during 2002 and 2013, detect reinfections and co-infections, and characterize the clinical features and laboratory findings according to the causative genotypes.We collected a representative sample of 182 isolates of adenoviruses from 175 children during the 12-year study period. The most prevalent species was HAdV-B genotype 3 (HAdV-3) (92/182, 50.5%) followed by HAdV-C (HAdV-2) (38/182, 20.9%). A single outbreak of HAdV-E (6/182, 3.3%) was noted in 2007. The mean age of children with adenovirus infections was 3.7 ± 2.0 years, with a slight predominance of males (53.1%). Children with HAdV-B tended to be older, had more lower respiratory tract infections, gastrointestinal symptoms, and a higher rate of hospitalization than those with HAdV-C (P < 0.05). Adenovirus co-infections were noted in 25/175 (14.3%) of the children. The most frequent co-infections were with species B (HAdV-3) and C (HAdV-2) (14/25, 56.0%). Additional infections were noted in 23/175 (13.1%) of the children. Of these repeated infections, the initial isolates were always genotypes of HAdV-C. The second isolates were genotypes of HAdV-B or HAdV-E. The clinical features of the first HAdV-B infection and the reinfection of HAdV-B followed the HAdV-C were similar.In conclusion, HAdV-B, C, and E were the only adenovirus species that were isolated from children who were sufficiently ill with respiratory infections to require a visit to the hospital. Human adenovirus B (HAdV-3) accounted for half of these species. HAdV-B was more likely than other species to produce severe disease. The high incidence of adenovirus co-infection and reinfections with different HAdV species supports the need for continued surveillance and has major implications for development of vaccines.
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Affiliation(s)
- Ya-Fang Wang
- From the National Institute of Infectious Diseases and Vaccinology (Y-FW, F-CS, S-LW, J-RW, C-YC), National Health Research Institutes, Miaoli; Department of Pathology (P-HK, H-PT, J-RW), National Cheng Kung University Hospital; Department of Pediatrics (C-CL, C-YC), National Cheng Kung University Hospital; and Departments of Medical Laboratory Science and Biotechnology (J-RW), National Cheng Kung University, Tainan, Taiwan, R.O.C
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Zhang D, Feng Z, Zhao M, Wang H, Wang L, Yang S, Li G, Lu L, Ma X. Clinical Evaluation of a Single-Tube Multiple RT-PCR Assay for the Detection of 13 Common Virus Types/Subtypes Associated with Acute Respiratory Infection. PLoS One 2016; 11:e0152702. [PMID: 27043208 PMCID: PMC4820107 DOI: 10.1371/journal.pone.0152702] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 03/17/2016] [Indexed: 12/12/2022] Open
Abstract
Respiratory viruses are among the most important causes of human morbidity and mortality worldwide, especially for infants and young children. In the past years, a few commercial multiplex RT-PCR assays have been used to detect respiratory viruses in spite of the high cost. In the present study, an improved single-tube multiplex reverse transcription PCR assay for simultaneous detection of 13 respiratory viruses was evaluated and compared with a previously reported two-tube assay as the reference method using clinical nasopharyngeal aspirates samples. Of 310 prospectively tested respiratory specimens selected from children hospitalized with acute respiratory illness, 226 (72.90%, 226/310) and 214 (69.03%, 214/310) positive for one or more viruses were identified by the single-tube and the two-tube assays, respectively, with combined test results showing good concordance (Kappa value = 0.874). Individually, the single-tube assay for adenovirus (Adv), human metapneumovirus (HMPV), human rhinovirus (HRV), parainfluenza virus type 1 (PIV1), parainfluenza virus type 3 (PIV3) and parainfluenza virus type 4 (PIV4) showed the significantly superior sensitivities to those of the two-tube assay. No false positives were found. In conclusion, our results demonstrates the one-tube assay revealed significant improvements over the two-tube assay in terms of the better sensitivity, more accurate quality control, less nonspecific amplification, more cost-effective and shorter turn-around time and will be a valuable tool for routine surveillance of respiratory virus infection in China.
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Affiliation(s)
- Dan Zhang
- Department of Pathophysiology, Guangzhou Medical University, Guangzhou city, Guangdong, China
- Key Laboratory for Medical Virology, National Health and Family Planning Commission, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping district, Beijing, China
| | - Zhishan Feng
- Pediatric Research Institute, Children’s Hospital of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Mengchuan Zhao
- Key Laboratory for Medical Virology, National Health and Family Planning Commission, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping district, Beijing, China
- Pediatric Research Institute, Children’s Hospital of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Hao Wang
- Key Laboratory for Medical Virology, National Health and Family Planning Commission, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping district, Beijing, China
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Le Wang
- Pediatric Research Institute, Children’s Hospital of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Shuo Yang
- Pediatric Research Institute, Children’s Hospital of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Guixia Li
- Pediatric Research Institute, Children’s Hospital of Hebei Province, Hebei Medical University, Shijiazhuang, China
| | - Li Lu
- Department of Pathophysiology, Guangzhou Medical University, Guangzhou city, Guangdong, China
- * E-mail: (XM); (LL)
| | - Xuejun Ma
- Key Laboratory for Medical Virology, National Health and Family Planning Commission, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping district, Beijing, China
- * E-mail: (XM); (LL)
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