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Chen L, Lu J, Wang R, Huang Y, Yu Y, Du P, Guo J, Wang X, Jiang Y, Cheng K, Zheng T, Yang Z. Humanization and characterization of a murine monoclonal neutralizing antibody against human adenovirus 7. Virology 2023; 583:36-44. [PMID: 37104921 DOI: 10.1016/j.virol.2023.04.008] [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: 02/04/2023] [Revised: 04/07/2023] [Accepted: 04/21/2023] [Indexed: 04/29/2023]
Abstract
Human adenovirus type 7 (HAdV7) is commonly associated with febrile acute respiratory disease (ARD) outbreaks. We have reported that 10G12, a mouse monoclonal antibody (mAb) specifically recognizing and neutralizing HAdV7, is a promising candidate for humanization. In this study, we engineered the six variants of 10G12 with increased degree of humanization and investigated their biological activity. The humanized monoclonal antibody (mAb) 10G12-M2 was shown to retain the parental antibody's high binding affinity, specificity and potent efficacy of viral suppression. The mAb 10G12-M2 recognized a conformational neutralization epitope of the hexon protein. Complex structure-based molecular docking simulation showed that the hexon protein formed several interactions with 10G12-M2, including hydrogen bonds and salt bridges interaction. Physicochemical properties analysis of 10G12-M2 demonstrated that it is stable and desirable lead candidate. In general, 10G12-M2 had excellent biological activity after humanization combined with the potential for use in prophylactic or therapeutic applications against HAdV7.
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Affiliation(s)
- Lei Chen
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Jiansheng Lu
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Rong Wang
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Ying Huang
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Yunzhou Yu
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Peng Du
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Jiazheng Guo
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Xi Wang
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Yujia Jiang
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Kexuan Cheng
- Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Tao Zheng
- Beijing Institute of Biotechnology, Beijing, 100071, China.
| | - Zhixin Yang
- Beijing Institute of Biotechnology, Beijing, 100071, China.
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Wang B, Li J, Wu S, Wang Y, Chen Y, Zhai Y, Song X, Zhao Z, Zhang Z, Zhang J, Yu R, Hou L, Chen W. A seroepidemiological survey of adenovirus type 7 circulation among healthy adults in China and in Sierra Leone, West Africa. Front Public Health 2023; 11:1095343. [PMID: 36815162 PMCID: PMC9940762 DOI: 10.3389/fpubh.2023.1095343] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/18/2023] [Indexed: 02/09/2023] Open
Abstract
Adenovirus type 7 (HAdV7) is one of the most pathogenic human adenoviruses (HAdVs) and can cause severe illness and even death, particularly in people with weakened immune systems. Many countries worldwide have experienced epidemics of this highly contagious pathogen, including China and Sierra Leone; however, studies describing the seroprevalence of anti-HAdV7 neutralizing antibodies (nAbs) are still lacking. Herein, we established an efficient neutralization assay based on a recombinant luciferase-expressing HAdV7 virus (HAd7-Luc) to monitor historical HAdV7 infections and predict outbreak distributions. Among the 2,350 serum samples collected from eight sites in China and Sierra Leone in this cross-sectional serological survey, the overall proportion of anti-HAdV7-seropositive individuals was nearly 60%, with higher seroprevalence rates in Sierra Leone than in China. Regionally, HAdV7 nAb titers were higher in China than in Sierra Leone and showed a geographic variation across different regions. Regardless of the location, the seropositive rate of HAdV7 nAb was lower than that of HAdV5 nAb, as was the nAb titer. The prevalence rates of antibodies against HAdV7 and HAdV5 were both related to age but not to sex. In addition, serologic cross-reactions were rarely observed among people infected with HAdV7 and HAdV5. These results indicate a humoral immune response acquired through endemic HAdV7 infection and enrich the understanding of not only the epidemiological prevention and control of HAdV7 but also the clinical application of HAdV7-based vaccines or gene therapy tools.
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Affiliation(s)
- Busen Wang
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Jianhua Li
- Zhejiang Provincial Center of Disease Control and Prevention, Hangzhou, China
| | - Shipo Wu
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Yudong Wang
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Yi Chen
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Yanfang Zhai
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Xiaohong Song
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Zhenghao Zhao
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Zhe Zhang
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Jinlong Zhang
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Rui Yu
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China
| | - Lihua Hou
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China,*Correspondence: Lihua Hou ✉
| | - Wei Chen
- Vaccine and Antibody Engineering Laboratory, Beijing Institute of Biotechnology, Beijing, China,Wei Chen ✉
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Pneumonia in Children During the 2019 Outbreak in Xiamen, China. Pediatr Infect Dis J 2023; 42:87-93. [PMID: 36638390 DOI: 10.1097/inf.0000000000003749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND To understand the regional epidemiology and clinical characteristics of adenovirus pneumonia in hospitalized children during the 2019 outbreak of respiratory adenoviruses in China. METHODS We analyzed the epidemiologic trend of adenovirus in children hospitalized for acute lower respiratory tract infections in Xiamen in 2019. Adenovirus was identified using direct fluorescent antibody detection. During the peak seasons of adenovirus epidemic, 170 adenovirus-positive specimens were obtained for molecular typing, and the clinical data were collected. RESULTS Among the 9890 children hospitalized for acute lower respiratory tract infection, 609 (6.2%) were tested positive for adenovirus. The detection rate of adenovirus was significantly higher in boys than in grils (9.5% vs. 4.6%, P < 0.05). Adenovirus activity increased markedly between April and August with the prevalence of 7.3%-12.4%. During the outbreak season, type 7 accounted for 70.6%, followed by type 3 (28.8%) and type 4 (0.6%). Of the 155 cases of adenovirus pneumonia, the median age was 3.0 years (range: 4 month to 9 years), 153 (98.7%) had fever with a mean fever duration of 9.04 ± 5.52 days, 28 (16.5%) had wheezing, 93 (60%) showed segmental or lobar consolidation with atelectasis and 13 (8.4%) showed pleural effusion. Forty-six (29.6%) cases developed severe pneumonia, 7 (4.1%) required mechanical ventilation and 2 (1.2%) died. Younger age, longer duration of fever and higher fever spike were more frequently seen in severe cases (P < 0.05). Twenty-five (16.2%) had C-reactive protein ≥ 40 mg/L, and 91 (58.7%) had procalcitonin ≥ 0.25 mg/L. CONCLUSIONS Adenovirus types 7 and 3 caused the outbreak of adenovirus pneumonia in community children during late spring to summer in 2019 in Xiamen. The majority of adenovirus pneumonia resembles bacterial pneumonia. The incidence of severe pneumonia was high when type 7 predominantly prevailed. Adenovirus type 7 was more common in severe cases than in nonsevere cases.
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Incidence of lower respiratory tract infection and associated viruses in a birth cohort in the Philippines. BMC Infect Dis 2022; 22:313. [PMID: 35354368 PMCID: PMC8966153 DOI: 10.1186/s12879-022-07289-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 03/10/2022] [Indexed: 12/02/2022] Open
Abstract
Background Lower respiratory tract infection (LRTI) is an important cause of morbidity and mortality in infants and young children. However, the etiological role of viruses and the timing of developing LRTI are not well defined. Methods We analyzed the data of a prospective cohort study in the Philippines as a birth cohort. We detected LRTI among children who visited healthcare facilities with respiratory symptom, and collected nasopharyngeal swabs for virus detection. We analyzed the incidence rates (IRs) and cumulative proportion of LRTI and severe LRTI by age group and each virus detected. Results A total of 350 LRTI episodes were observed from 473 child-years yielded from 419 children. The IRs of LRTI were 70.8, 70.7, and 80.8 per 100 child-years for 0–5, 6–11, and 12–23 months of age, respectively. By 12 months of age, 45% of children developed LRTI at least once. Rhinovirus and respiratory syncytial virus were the most frequently detected viruses in all age groups. However, the IRs of influenza virus were low especially at 0–5 months of age. Conclusions We identified various patterns of age-specific IRs of LRTI and severe LRTI for different viruses, which should be considered to establish more effective interventions including vaccinations. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07289-3.
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Calzado-Dacasin C, Foronda JL, Arguelles VL, Daga CM, Quimpo MT, Lupisan S, Dapat C, Saito M, Okamoto M, Albano PM, Oshitani H. Serotype Identification of Human Adenoviruses Associated with Influenza-Like Illnesses in the Philippines from 2006-2012 by Microneutralization and Molecular Techniques. Int J Infect Dis 2022; 117:326-333. [PMID: 35150916 DOI: 10.1016/j.ijid.2022.02.008] [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: 10/25/2021] [Revised: 02/03/2022] [Accepted: 02/03/2022] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES Human adenoviruses (HAdV) are known to cause a wide range of diseases including acute respiratory infections, conjunctivitis, and acute gastroenteritis. In this study, we aimed to determine the serotypes of HAdV in patients with influenza-like illness (ILI) in the Philippines from 2006-2012 and to describe the demographic and epidemiological characteristics of patients who tested positive for HAdV. METHODS Between 2006 and 2012, the Philippine National Influenza Centre detected HAdV in 1294 samples of patients with ILI. Serotype determination was done in select samples using microneutralization, polymerase chain reaction (PCR), and sequencing methods. RESULTS A total of 8 serotypes were identified (HAdV 1-7 and 11), with HAdV-2 (27.8%), and HAdV-3 (27.8%) being the most prevalent. The majority of HAdV infections were found in children below 5 years of age (79.9%). CONCLUSIONS The identification of HAdV circulating serotypes may serve as guide for designing disease intervention and control strategies and will provide important information regarding the contribution of this virus to respiratory infections, particularly in children, which remain a public health burden in the Philippines.
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Affiliation(s)
- Catherine Calzado-Dacasin
- Department of Virology, Research Institute for Tropical Medicine, Muntinlupa, Philippines; Graduate School, University of Santo Tomas, Manila, Philippines.
| | - Janiza Lianne Foronda
- Department of Virology, Research Institute for Tropical Medicine, Muntinlupa, Philippines
| | - Vina Lea Arguelles
- Department of Virology, Research Institute for Tropical Medicine, Muntinlupa, Philippines
| | - Chona Mae Daga
- Department of Epidemiology and Biostatistics, Research Institute for Tropical Medicine, Muntinlupa, Philippines
| | - Marie Therese Quimpo
- Department of Virology, Research Institute for Tropical Medicine, Muntinlupa, Philippines
| | - Socorro Lupisan
- Department of Virology, Research Institute for Tropical Medicine, Muntinlupa, Philippines
| | - Clyde Dapat
- Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Mariko Saito
- Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan; RITM-Tohoku Collaborating Research Center on Emerging and Re-emerging Infectious Diseases, Muntinlupa, Philippines
| | - Michiko Okamoto
- Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan; RITM-Tohoku Collaborating Research Center on Emerging and Re-emerging Infectious Diseases, Muntinlupa, Philippines
| | - Pia Marie Albano
- Graduate School, University of Santo Tomas, Manila, Philippines; Department of Biological Sciences, College of Science, University of Santo Tomas, Manila, Philippines
| | - Hitoshi Oshitani
- Department of Virology, Tohoku University Graduate School of Medicine, Sendai, Japan; RITM-Tohoku Collaborating Research Center on Emerging and Re-emerging Infectious Diseases, Muntinlupa, Philippines
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Lynch JP, Kajon AE. Adenovirus: Epidemiology, Global Spread of Novel Types, and Approach to Treatment. Semin Respir Crit Care Med 2021; 42:800-821. [PMID: 34918322 DOI: 10.1055/s-0041-1733802] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Adenoviruses (AdVs) are DNA viruses that typically cause mild infections involving the upper or lower respiratory tract, gastrointestinal tract, or conjunctiva. Rare manifestations of AdV infections include hemorrhagic cystitis, hepatitis, hemorrhagic colitis, pancreatitis, nephritis, or meningoencephalitis. AdV infections are more common in young children, due to lack of humoral immunity. Epidemics of AdV infection may occur in healthy children or adults in closed or crowded settings (particularly military recruits). The vast majority of cases are self-limited. However, the clinical spectrum is broad and fatalities may occur. Dissemination is more likely in patients with impaired immunity (e.g., organ transplant recipients, human immunodeficiency virus infection). Fatality rates for untreated severe AdV pneumonia or disseminated disease may exceed 50%. More than 100 genotypes and 52 serotypes of AdV have been identified and classified into seven species designated HAdV-A through -G. Different types display different tissue tropisms that correlate with clinical manifestations of infection. The predominant types circulating at a given time differ among countries or regions, and change over time. Transmission of novel strains between countries or across continents and replacement of dominant viruses by new strains may occur. Treatment of AdV infections is controversial, as prospective, randomized therapeutic trials have not been done. Cidofovir has been the drug of choice for severe AdV infections, but not all patients require treatment. Live oral vaccines are highly efficacious in reducing the risk of respiratory AdV infection and are in routine use in the military in the United States but currently are not available to civilians.
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Affiliation(s)
- Joseph P Lynch
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Adriana E Kajon
- Infectious Disease Program, Lovelace Biomedical Research Institute, Albuquerque, New Mexico
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Yu P, Lou D, Qi L, Chen Z. The novel antiviral properties of brassicasterol against human adenovirus. Future Virol 2021. [DOI: 10.2217/fvl-2021-0087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Aim: To investigate whether brassicasterol has inhibitory effects against adenovirus (AdV). Materials & methods: The antiviral effects of brassicasterol against AdV 3 and 7 were tested in human airway epithelial cells. Brassicasterol cytotoxicity was assessed by WST-1 assay. AdV DNA was quantified by qPCR. Results: Brassicasterol inhibited AdV 3 and 7 infection of airway epithelial cells in a dose-dependent manner. Similarly, brassicasterol also inhibited AdV 3 and 7 production in infected cells. No apparent cytotoxicity of brassicasterol was detected. Further study showed that brassicasterol inhibited AdV DNA replication, but had no impact on viral entry of cells and viral genome import to nucleus. Conclusion: Brassicasterol exerts anti-AdV effects probably through the inhibition of viral DNA replication.
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Affiliation(s)
- Peifeng Yu
- Department of Pediatrics, Zhuji Affiliated Hospital of Shaoxing University, Zhuji, 311800, People's Republic of China
| | - Dan Lou
- Department of Pediatrics, Zhuji Affiliated Hospital of Shaoxing University, Zhuji, 311800, People's Republic of China
| | - Lifeng Qi
- Department of Infectious Disease, Shenzhen Children’s Hospital, Shenzhen, 518038, People's Republic of China
| | - Zewei Chen
- Department of Pediatrics, Shenzhen University General Hospital, Shenzhen, 518055, People's Republic of China
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Li J, Wei J, Xu Z, Jiang C, Li M, Chen J, Li Y, Yang M, Gu Y, Wang F, Shu Y, Yang Y, Sun L, Liu Y. Cytokine/Chemokine Expression Is Closely Associated Disease Severity of Human Adenovirus Infections in Immunocompetent Adults and Predicts Disease Progression. Front Immunol 2021; 12:691879. [PMID: 34163488 PMCID: PMC8215364 DOI: 10.3389/fimmu.2021.691879] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/20/2021] [Indexed: 12/12/2022] Open
Abstract
Increasing human Adenovirus (HAdV) infections complicated with acute respiratory distress syndrome (ARDS) even fatal outcome were reported in immunocompetent adolescent and adult patients. Here, we characterized the cytokine/chemokine expression profiles of immunocompetent patients complicated with ARDS during HAdV infection and identified biomarkers for disease severity/progression. Forty-eight cytokines/chemokines in the plasma samples from 19 HAdV-infected immunocompetent adolescent and adult patients (ten complicated with ARDS) were measured and analyzed in combination with clinical indices. Immunocompetent patients with ARDS caused by severe acute respiratory disease coronavirus (SARS-CoV)-2, 2009 pandemic H1N1 (panH1N1) or bacteria were included for comparative analyses. Similar indices of disease course/progression were found in immunocompetent patients with ARDS caused by HAdV, SARS-CoV-2 or panH1N infections, whereas the HAdV-infected group showed a higher prevalence of viremia, as well as increased levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT) and creatine kinase (CK). Expression levels of 33 cytokines/chemokines were increased significantly in HAdV-infected patients with ARDS compared with that in healthy controls, and many of them were also significantly higher than those in SARS-CoV-2-infected and panH1N1-infected patients. Expression of interferon (IFN)-γ, interleukin (IL)-1β, hepatocyte growth factor (HGF), monokine induced by IFN-γ (MIG), IL-6, macrophage-colony stimulating factor (M-CSF), IL-10, IL-1α and IL-2Ra was significantly higher in HAdV-infected patients with ARDS than that in those without ARDS, and negatively associated with the ratio of the partial pressure of oxygen in arterial blood/fraction of inspired oxygen (PaO2/FiO2). Analyses of the receiver operating characteristic curve (ROC) showed that expression of IL-10, M-CSF, MIG, HGF, IL-1β, IFN-γ and IL-2Ra could predict the progression of HAdV infection, with the highest area under the curve (AUC) of 0.944 obtained for IL-10. Of note, the AUC value for the combination of IL-10, IFN-γ, and M-CSF reached 1. In conclusion, the “cytokine storm” occurred during HAdV infection in immunocompetent patients, and expression of IL-10, M-CSF, MIG, HGF, IL-1β, IFN-γ and IL-2Ra was closely associated with disease severity and could predict disease progression.
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Affiliation(s)
- Jin Li
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, China
| | - Jinli Wei
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Zhixiang Xu
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Chunmei Jiang
- Department of Infectious Disease, The People's Hospital of Longhua, Shenzhen, China
| | - Mianhuan Li
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Jie Chen
- Research and Development Department, Guangzhou Sagene Biotech Co., Ltd., Guangzhou, China
| | - Yanjie Li
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Minghui Yang
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, China
| | - Yuchen Gu
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Fuxiang Wang
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Yuelong Shu
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, China
| | - Yang Yang
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
| | - Litao Sun
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, China
| | - Yingxia Liu
- Shenzhen Key Laboratory of Pathogen and Immunity, National Clinical Research Center for Infectious Disease, State Key Discipline of Infectious Disease, Shenzhen Third People's Hospital, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen, China
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Shi T, Chen C, Huang L, Fan H, Lu G, Yang D, Zhao C, Zhang D. Risk factors for mortality from severe community-acquired pneumonia in hospitalized children transferred to the pediatric intensive care unit. Pediatr Neonatol 2020; 61:577-583. [PMID: 32651007 DOI: 10.1016/j.pedneo.2020.06.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/15/2020] [Accepted: 06/15/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Some children hospitalized due to severe community-acquired pneumonia (CAP) require to the pediatric intensive care unit (PICU) because of severe complications. The purpose of this study was to identify the risk factors for mortality in this patient population. METHODS This study evaluated the medical records of 113 hospitalized children with severe CAP, who were transferred to the PICU within 48 h of admission at the Guangzhou Women and Children's Medical Center between 2013 and 2017. RESULTS The study group consisted of 87 boys (77%) and 26 girls (33%), aged between 1 month and 9 years; 72.6% (82/113) of patients were aged <12 months. The mortality rate was 12.3% (14/113). The most common viral and bacterial pathogens isolated were adenovirus (17.7%, 20/113) and Haemophilus influenzae (8.8%, 10/113). Wheezing, cyanosis, oxygen saturation <90%, Pediatric Early Warning Score (PEWS) >3 on admission, not receiving corticosteroid therapy prior to admission, the need for mechanical ventilation, septic shock, multi-organ dysfunction (MODS), and acute renal failure (ARF) occurring prior to transfer to the PICU, increased alanine aminotransferase (ALT) and aspartate transaminase (AST) levels, and decreased hemoglobin and albumin (ALB) levels were associated with mortality (P < 0.05). Non-survivors were more likely to have an oxygen saturation <90% on admission and lower levels of ALB prior to transfer to the PICU than survivors (P < 0.05). CONCLUSIONS Our results showed that hospitalized children with severe CAP who were transferred to the PICU within 48 h of hospital admission were mainly aged <1 year. Additionally, an oxygen saturation <90% and decreased ALB levels were early prognostic variables independently associated with death.
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Affiliation(s)
- Tingting Shi
- Department of Respiratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510120, China.
| | - Chen Chen
- Department of Respiratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510120, China.
| | - Li Huang
- Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510120, China.
| | - Huifeng Fan
- Pediatric Intensive Care Unit, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510120, China.
| | - Gen Lu
- Department of Respiratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510120, China.
| | - Diyuan Yang
- Department of Respiratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510120, China.
| | - Changan Zhao
- Emergency Department of Guangdong Maternal and Children's Hospital, Guangzhou, 510010, China.
| | - Dongwei Zhang
- Department of Respiratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510120, China.
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Qi L, Wang Y, Wang H, Deng J. Adenovirus 7 Induces Interlukin-6 Expression in Human Airway Epithelial Cells via p38/NF-κB Signaling Pathway. Front Immunol 2020; 11:551413. [PMID: 33072092 PMCID: PMC7538593 DOI: 10.3389/fimmu.2020.551413] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/20/2020] [Indexed: 01/09/2023] Open
Abstract
Human Adenovirus (AdV) infection is very common and usually has a significant impact on children. AdV-induced inflammation is believed to be one of the main causes of severe symptoms. However, an inflammatory response profile in the airway in AdV-infected children is still lacking, and the mechanism underlying AdV-induced inflammation in the airway is also poorly understood. In the current study, we determined the expression of a panel of inflammation cytokines in the airway samples from AdV 7 infected children and further investigated the molecular mechanism underlying AdV 7-induced cytokine expression. Our results showed that eight out of 13 tested inflammatory cytokines were significantly increased in nasal washes of AdV 7-infected children comparing to healthy control, with IL-6 showing the highest enhancement. AdV 7 infection of bronchial epithelial cell line and primary airway epithelial cells confirmed that AdV 7 increased IL-6 mRNA and protein expression in an infection dose-dependent manner. Promoter analysis revealed that AdV 7 infection transactivated IL-6 promoter and a NF-κB binding site in IL-6 promoter was involved in the transactivation. Further analysis showed that upon AdV 7 infection, NF-κB p65 was phosphorylated and translocated into nucleus and bound onto IL-6 promoter. Signaling pathway analysis revealed that p38/NF-κB pathway was involved in AdV 7 infection induced IL-6 elevation. Taken together, our study shows that AdV 7 infection triggers the expression of a range of inflammatory cytokines including IL-6 in the airway of infected children, and AdV 7 enhances IL-6 expression by transactivating IL-6 promoter via p38/NF-κB signaling pathway. Findings of our current study have provided more information toward a better understanding of AdV-induced airway inflammation, which might also benefit the development of intervention strategies.
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Affiliation(s)
- Lifeng Qi
- Department of Neonatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.,Department of Infectious Disease, Shenzhen Children's Hospital, Shenzhen, China
| | - Yajuan Wang
- Department of Neonatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.,Department of Neonatology, Children's Hospital, Capital Institute of Pediatrics, Beijing, China
| | - Heping Wang
- Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen, China
| | - Jikui Deng
- Department of Infectious Disease, Shenzhen Children's Hospital, Shenzhen, China
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Chen Q, Liu J, Liang W, Chen Y, Dou M, Liu Z, Chen Y, Zheng Z, Zhu B, Lin Y. Clinical Features, Replication Competence, and Innate Immune Responses of Human Adenovirus Type 7 Infection. J Infect Dis 2020; 223:1390-1399. [PMID: 32840612 DOI: 10.1093/infdis/jiaa524] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 08/14/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Epidemiologic reports suggest that the most severe or fatal adenoviral disease in children might be associated with human adenovirus (HAdV) type 7. However, the pathogenesis of HAdV-7-induced severe disease remains poorly understood. METHODS HAdV-3 and HAdV-7 replication kinetics and the host response to infection were compared using ex vivo human lung tissue cultures. Furthermore, cytokine and chemokine levels and the presence of adenovirus DNA in the serum of hospitalized children infected with HAdV-7 (n = 65) or HAdV-3 (n = 48) were measured (using a multiplex immunoassay and Taqman real-time polymerase chain reaction, respectively). RESULTS Among 471 HAdV-positive specimens, HAdV-3 or HAdV-7 was the most prevalent genotype during 2014-2016 or 2018, respectively. The incidence of severe pneumonia was higher in HAdV-7-infected than in HAdV-3-infected individuals (30.1% vs 4.5%, respectively). HAdV-7 replicated more efficiently than HAdV-3 ex vivo. Interferon-induced protein 10, interleukin 6, and monocyte chemoattractant protein 1 levels were significantly higher in HAdV-7-infected than in HAdV-3-infected children. Adenovirus DNA was detected in serum samples from 40% and 4.2% of HAdV-7- and HAdV-3-infected children, respectively. Furthermore, viremia was strongly associated with severe clinical presentations. CONCLUSIONS The pathogenesis of HAdV-7-induced severe disease was probably associated with high replication competence and hyperinflammatory responses. The detection of adenovirus DNA in blood may be useful in assessing risk for severe disease.
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Affiliation(s)
- Qigao Chen
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jun Liu
- Department of Thoracic Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Weiwen Liang
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yi Chen
- Central Laboratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Min Dou
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhongmin Liu
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yuan Chen
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhongli Zheng
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Bing Zhu
- Central Laboratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yongping Lin
- Department of Laboratory Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, China
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12
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Lakshmi Narayan PK, Kajon AE. Human mastadenovirus-B (HAdV-B)-specific E3-CR1β and E3-CR1γ glycoproteins interact with each other and localize at the plasma membrane of non-polarized airway epithelial cells. Virology 2020; 546:67-78. [PMID: 32452418 PMCID: PMC7158847 DOI: 10.1016/j.virol.2020.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/20/2020] [Accepted: 04/06/2020] [Indexed: 11/23/2022]
Abstract
The E3 region of all simian and human types classified within species Human mastadenovirus B (HAdV-B) encodes two unique highly conserved ORFs of unknown function designated E3-CR1β and E3-CR1γ. We generated a HAdV-3 mutant encoding small epitope tags at the N-termini of both E3-CR1β and E3-CR1γ (HAdV-3 N-tag wt) and a double knock out (HAdV-3 N-tag DKO) mutant virus that does not express either protein. Our studies show that HAdV-3 E3-CR1β and E3-CR1γ are type I transmembrane proteins that are produced predominantly at late times post infection, are glycosylated, co-localize at the plasma membrane of non-polarized epithelial cells, and interact with each other. At their extreme C-termini HAdV-B E3-CR1β and E3-CR1γ possess a conserved di-leucine motif followed by a class II PDZ domain binding motif (PBM). HAdV-3 E3-CR1β and E3-CR1γ are dispensable for virus growth, progeny release, spread, and plaque formation in A549 cells. HAdV-B E3-CR1β and E3-CR1γ are type I transmembrane proteins. HAdV-B E3-CR1β and E3-CR1γ possess a C-terminal class II PDZ binding motif. HAdV-3 E3-CR1β and E3-CR1γ interact and co-localize at the plasma membrane. HAdV-3 E3-CR1β and E3-CR1γ are dispensable for virus progeny release and spread.
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Affiliation(s)
| | - Adriana E Kajon
- Infectious Disease Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA.
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13
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Abstract
BACKGROUND There are no recent descriptions of measles hospitalizations and complications in US children despite outbreaks within the past decade-including 2 in Minnesota (2011 and 2017). The objective of our study was to describe complications, hospital management and resource utilization for children hospitalized for measles at a US children's hospital. METHODS Retrospective case series of children (0-18 years of age) hospitalized for measles (observation/inpatient diagnosis code for measles) at Children's Minnesota, January 1, 2011, to September 1, 2017. Descriptive statistics were performed. RESULTS Thirty-three patients were included (7 from 2011 and 21 from 2017 outbreaks). Median age was 27 months (range, 6-95 months), 94% were Black or African American (73% Somali ethnicity), 88% had medical assistance and 91% were unvaccinated to measles. Poor feeding was a primary reason for admission (97%); additional complications included otitis media (42%), pneumonia (30%), tracheitis (6%) and keratitis (3%). Additional testing was common [chest radiographs (70%), blood cultures (64%), nonmeasles viral testing (42%)]. Seventy-three percent received antibiotics, 30% required oxygen and 21% received vitamin A. Median length of stay was 3.7 days (range, 1.1-26.2 days); 1 patient was readmitted. Median direct cost in 2017 was $5291 (interquartile range : $3907-$7519), and estimated total cost to the hospital for the 2017 outbreak was $1.3 million. CONCLUSIONS Clinicians should be aware of measles complications and treatment. Public and private health efforts should continue to focus on immunization, given significant implications of measles infections for patients and healthcare systems. Future studies may assess complications of measles across the United States as individual outbreaks often occur in specific populations, making generalization of results challenging.
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14
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Bullard BL, Corder BN, Weaver EA. A Single-Cycle Adenovirus Type 7 Vaccine for Prevention of Acute Respiratory Disease. Viruses 2019; 11:E413. [PMID: 31058858 PMCID: PMC6563269 DOI: 10.3390/v11050413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/30/2019] [Accepted: 05/01/2019] [Indexed: 11/23/2022] Open
Abstract
Adenovirus type 7 (Ad7) infection is associated with acute respiratory disease (ARD), especially in military recruits living in close quarters. Recently, several outbreaks of Ad7 infections have occurred in civilian populations, with some cases leading to death. However, the current Ad7 vaccine is licensed for use only in military recruits because it utilizes an orally delivered wild type virus which is shed in the stool for 28 days after immunization. This poses a safety risk due to the possibility of virus spread to vulnerable populations. To address the need for a safer Ad7 vaccine for use in civilian populations, we developed a single-cycle Ad7 virus (scAd7). This scAd7 virus is deleted for the Ad7 fiber protein, so that viruses produced outside of complementing cells lines lack this essential structural protein and have severely reduced infectivity. In vitro studies in noncomplementing A549 cells showed that the scAd7 virus has genomic DNA replication kinetics and Ad7 hexon expression similar to a replication-competent virus; however, virus progeny produced after infection has impaired infectivity. Therefore, this scAd7 virus combines the safety advantages of a replication-defective virus with the increased Ad7 gene expression of a replication-competent virus. Due to these advantages, we believe that scAd7 viruses should be further studied as an alternative, safer Adenovirus 7 vaccine.
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Affiliation(s)
- Brianna L Bullard
- School of Biological Sciences, Nebraska Center for Virology, University of Nebraska, Lincoln, NE 68503, USA.
| | - Brigette N Corder
- School of Biological Sciences, Nebraska Center for Virology, University of Nebraska, Lincoln, NE 68503, USA.
| | - Eric A Weaver
- School of Biological Sciences, Nebraska Center for Virology, University of Nebraska, Lincoln, NE 68503, USA.
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15
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Girardi V, Gregianini TS, Gularte JS, Demoliner M, Seadi CF, Straliotto SM, Martins LG, Spilki FR. Temporal dynamics of Human mastadenovirus species in cases of respiratory illness in southern Brazil. Braz J Microbiol 2019; 50:677-684. [PMID: 31030411 DOI: 10.1007/s42770-019-00084-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/12/2019] [Indexed: 01/26/2023] Open
Abstract
Human mastadenovirus (HAdV) genus is related to several diseases, among them upper and lower respiratory tract illness. HAdV species B, C, D, and E are mainly associated with respiratory infections. The goal of this work was to identify the HAdV species associated with respiratory infections in hospitalized patients from southern Brazil. Samples were collected from 1996 to 2004 and 2011 to 2017. During this period, 28,524 samples were collected, and 9983 were positive for respiratory viruses, being 435 for HAdV. From these 435 samples, 57 were selected for characterization of HAdV species. For screening the presence of HAdV, a partial sequence of the DNA polymerase gene (DNApol gene) was amplified by nested PCR. Partial nucleotide sequencing was performed in positive samples, and HAdV (DNApol gene) was detected in 53 samples: species B (28; 49.1%), C (16; 28.0%), D (2; 3.5%), E (5; 8.7%), and untyped (2; 3.5%). Specie D was found only in 2017 and specie E in 2011 and 2012. The age of the patients ranged from < 1 to 81 years old, and 62.3% were male. No relationship between gender or age and identified HAdV species were observed. In addition, in the period of 2013-2017, 18 samples from patients who died were analyzed: 11 were related to species B, 4 to C, and 2 to D and 1 remained untyped. Circulation of HAdV species D and E varied over the years, but species B and C were present throughout the evaluated period. In addition, respiratory infections by HAdV affect elderly and children mainly.
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Affiliation(s)
- Viviane Girardi
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239 no. 2755, Novo Hamburgo, RS, 93352-000, Brazil.
| | - Tatiana Schäffer Gregianini
- Laboratório Central da Secretaria de Saúde do Estado do Rio Grande do Sul, LACEN/SES-RS, Av. Ipiranga, 5400, Porto Alegre, RS, 90610-000, Brazil
| | - Juliana Schons Gularte
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239 no. 2755, Novo Hamburgo, RS, 93352-000, Brazil
| | - Meriane Demoliner
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239 no. 2755, Novo Hamburgo, RS, 93352-000, Brazil
| | - Claudete Farina Seadi
- Laboratório Central da Secretaria de Saúde do Estado do Rio Grande do Sul, LACEN/SES-RS, Av. Ipiranga, 5400, Porto Alegre, RS, 90610-000, Brazil
| | - Selir Maria Straliotto
- Laboratório Central da Secretaria de Saúde do Estado do Rio Grande do Sul, LACEN/SES-RS, Av. Ipiranga, 5400, Porto Alegre, RS, 90610-000, Brazil
| | - Letícia Garay Martins
- Centro Estadual de Vigilância em Saúde da Secretaria de Saúde do Estado do Rio Grande do Sul-CEVS/SES-RS, Av. Ipiranga, 5400, Porto Alegre, RS, 90610-000, Brazil
| | - Fernando Rosado Spilki
- Laboratório de Microbiologia Molecular, Universidade Feevale, ERS 239 no. 2755, Novo Hamburgo, RS, 93352-000, Brazil
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16
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Dembele BPP, Kamigaki T, Dapat C, Tamaki R, Saito M, Saito M, Okamoto M, Igoy MAU, Mercado ES, Mondoy M, Tallo VL, Lupisan SP, Egawa S, Oshitani H. Aetiology and risks factors associated with the fatal outcomes of childhood pneumonia among hospitalised children in the Philippines from 2008 to 2016: a case series study. BMJ Open 2019; 9:e026895. [PMID: 30928958 PMCID: PMC6475207 DOI: 10.1136/bmjopen-2018-026895] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE Pneumonia remains the leading cause of hospitalisations and deaths among children aged <5 years. Diverse respiratory pathogens cause acute respiratory infections, including pneumonia. Here, we analysed viral and bacterial pathogens and risk factors associated with death of hospitalised children. DESIGN A 9-year case series study. SETTING Two secondary-care hospitals, one tertiary-care hospital and one research centre in the Philippines. PARTICIPANTS 5054 children aged <5 years hospitalised with severe pneumonia. METHODS Nasopharyngeal swabs for virus identification, and venous blood samples for bacterial culture were collected. Demographic, clinical data and laboratory findings were collected at admission time. Logistic regression analyses were performed to identify the factors associated with death. RESULTS Of the enrolled patients, 57% (2876/5054) were males. The case fatality rate was 4.7% (238/5054), showing a decreasing trend during the study period (p<0.001). 55.0% of the patients who died were either moderately or severely underweight. Viruses were detected in 61.0% of the patients, with respiratory syncytial virus (27.0%) and rhinovirus (23.0%) being the most commonly detected viruses. In children aged 2-59 months, the risk factors significantly associated with death included age of 2-5 months, sensorial changes, severe malnutrition, grunting, central cyanosis, decreased breath sounds, tachypnoea, fever (≥38.5°C), saturation of peripheral oxygen <90%, infiltration, consolidation and pleural effusion on chest radiograph.Among the pathogens, adenovirus type 7, seasonal influenza A (H1N1) and positive blood culture for bacteria were significantly associated with death. Similar patterns were observed between the death cases and the aforementioned factors in children aged <2 months. CONCLUSION Malnutrition was the most common factor associated with death and addressing this issue may decrease the case fatality rate. In addition, chest radiographic examination and oxygen saturation measurement should be promoted in all hospitalised patients with pneumonia as well as bacteria detection to identify patients who are at risk of death.
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Affiliation(s)
| | - Taro Kamigaki
- Virology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Clyde Dapat
- Virology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Raita Tamaki
- Virology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Mariko Saito
- Virology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Mayuko Saito
- Virology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Michiko Okamoto
- Virology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Mary Ann U Igoy
- Research Institute for Tropical Medicine, Muntinlupa City, Philippines
| | | | - Melisa Mondoy
- Research Institute for Tropical Medicine, Muntinlupa City, Philippines
| | - Veronica L Tallo
- Research Institute for Tropical Medicine, Muntinlupa City, Philippines
| | - Socorro P Lupisan
- Research Institute for Tropical Medicine, Muntinlupa City, Philippines
| | - Shinichi Egawa
- Division of International Cooperation for Disaster Medicine, International Research Institute of Disaster Science, Tohoku University, Sendai, Japan
| | - Hitoshi Oshitani
- Virology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
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17
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Ye X, Xiao L, Zheng X, Wang J, Shu T, Feng Y, Liu X, Su W, Wang Q, Li C, Chen L, Feng L. Seroprevalence of Neutralizing Antibodies to Human Adenovirus Type 4 and 7 in Healthy Populations From Southern China. Front Microbiol 2018; 9:3040. [PMID: 30619131 PMCID: PMC6295555 DOI: 10.3389/fmicb.2018.03040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/26/2018] [Indexed: 12/22/2022] Open
Abstract
Human adenoviruses type 4 (HAdV4) and 7 (HAdV7) are two major respiratory pathogens and sporadically cause outbreaks of acute respiratory diseases. The neutralizing antibody (nAb) response to these two adenoviruses in civilian populations, which is important for dissecting previous circulations and predicting potential outbreaks, remains largely unknown. In this study, we generated replication-competent HAdV4 and HAdV7 reporter viruses expressing secreted-alkaline-phosphatase (SEAP), and established neutralization assays to investigate the seroprevalence of pre-existing nAb in healthy volunteers from Hunan Province, southern China. The seropositivity rates are 58.4 and 63.8% for anti-HAdV4 nAb and anti-HAdV7 nAb, respectively. High nAb titers (> 1000) were frequently detected in HAdV4-seropositive individuals, whereas most HAdV7-seropositive volunteers had moderate nAb titers (201-1000). The seropositivity rates of anti-HAdV4 nAb and anti-HAdV7 nAb increase with age, with individuals younger than 20 exhibiting the lowest seropositivity rates. Both seropositivity rates and nAb titers are comparable between different sex groups. Notably, HAdV4-seropositive individuals tend to be HAdV7-seropositive and vice versa. Because HAdV4 antisera showed no neutralizing activity to HAdV7 whereas HAdV7 antisera cannot neutralize HAdV4, a subgroup of individuals might be susceptible to infection by HAdV4 and HAdV7 and thus generate nAb to both of them. These results revealed the continuous circulation of HAdV4 and HAdV7 and the lack of protective immunity in more than 35% of people, which emphasized the surveillance of these two HAdVs and the development of prophylactic vaccines.
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Affiliation(s)
- Xianmiao Ye
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Lijun Xiao
- Center for Disease Control and Prevention of Chenzhou, Chenzhou, China
| | - Xuehua Zheng
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Jinlin Wang
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Tao Shu
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ying Feng
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xinglong Liu
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Wan Su
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,School of Biomedical Sciences, Huaqiao University, Quanzhou, China
| | - Qian Wang
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Chufang Li
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ling Chen
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.,The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Liqiang Feng
- State Key Laboratories of Respiratory Diseases, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
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18
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Qiu FZ, Shen XX, Zhao MC, Zhao L, Duan SX, Chen C, Qi JJ, Li GX, Wang L, Feng ZS, Ma XJ. A triplex quantitative real-time PCR assay for differential detection of human adenovirus serotypes 2, 3 and 7. Virol J 2018; 15:81. [PMID: 29716642 PMCID: PMC5930744 DOI: 10.1186/s12985-018-0983-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 04/11/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Human adenovirus (HAdV) serotypes 2, 3 and 7 are more prevalent than other serotypes and have been associated with severe pneumonia in pediatric children. Molecular typing of HAdV is not routinely performed in clinical diagnostic laboratories as it is time-consuming and labor-intensive. METHODS In the present study, we developed a triplex quantitative real-time PCR assay (tq-PCR) in a single closed tube for differential detection and quantitative analysis of HAdV serotypes 2, 3 and 7. The sensitivity, specificity, reproducibility and clinical performance of tq-PCR were evaluated. RESULTS The analytical sensitivity of the tq-PCR was 100 copies/reaction for each of HAdV serotypes 2, 3 and 7, and no cross-reaction with other common respiratory viruses or HAdV serotypes 1,4,5,6,31,55 and 57 was observed. The coefficients of variation (CV) of intra-assay and inter-assay were between 0.6% to 3.6%. Of 138 previously-defined HAdV-positive nasopharyngeal aspirates samples tested, the detection agreement between tq-PCR and nested PCR was 96.38% (133/138). CONCLUSION The proposed tq-PCR assay is a sensitive, specific and reproducible method and has the potential for clinical use in the rapid and differential detection and quantitation of HAdV serotypes 2, 3 and 7.
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Affiliation(s)
- Fang-Zhou Qiu
- Hebei Medical University, Shijiazhuang, 050031, Hebei, 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, No. 155 Changbai Street, Chang ping District, Beijing, 102206, China
| | - Xin-Xin Shen
- 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, No. 155 Changbai Street, Chang ping District, Beijing, 102206, China
| | - Meng-Chuan Zhao
- Children's Hospital of Hebei Province, Shijiazhuang, 050031, Hebei, China
| | - Li Zhao
- Hebei Medical University, Shijiazhuang, 050031, Hebei, 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, No. 155 Changbai Street, Chang ping District, Beijing, 102206, China
| | - Su-Xia Duan
- 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, No. 155 Changbai Street, Chang ping District, Beijing, 102206, China.,Children's Hospital of Hebei Province, Shijiazhuang, 050031, Hebei, China
| | - Chen Chen
- 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, No. 155 Changbai Street, Chang ping District, Beijing, 102206, China
| | - Ju-Ju Qi
- Hebei Medical University, Shijiazhuang, 050031, Hebei, 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, No. 155 Changbai Street, Chang ping District, Beijing, 102206, China
| | - Gui-Xia Li
- Children's Hospital of Hebei Province, Shijiazhuang, 050031, Hebei, China
| | - Le Wang
- Children's Hospital of Hebei Province, Shijiazhuang, 050031, Hebei, China
| | - Zhi-Shan Feng
- Children's Hospital of Hebei Province, Shijiazhuang, 050031, Hebei, China.
| | - Xue-Jun 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, No. 155 Changbai Street, Chang ping District, Beijing, 102206, China.
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19
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Rayne F, Wittkop L, Bader C, Kassab S, Tumiotto C, Berciaud S, Wodrich H, Lafon ME. Rapid Adenovirus typing method for species identification. J Virol Methods 2017; 249:156-160. [PMID: 28918074 DOI: 10.1016/j.jviromet.2017.09.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 07/28/2017] [Accepted: 09/12/2017] [Indexed: 10/18/2022]
Abstract
Adenoviruses are characterized by a large variability, reflected by their classification in species A to G. Certain species, eg A and C, could be associated with increased clinical severity, both in immunocompetent and immunocompromised hosts suggesting that in some instances species identification provides clinically relevant information. Here we designed a novel "pVI rapid typing method" to obtain quick, simple and cost effective species assignment for Adenoviruses, thanks to combined fusion temperature (Tm) and amplicon size analysis. Rapid typing results were compared to Sanger sequencing in the hexon gene for 140 Adenovirus-positive clinical samples included in the Typadeno study. Species A and C could be identified with a 100% positive predictive value, thus confirming the value of this simple typing method.
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Affiliation(s)
- Fabienne Rayne
- Univ Bordeaux, CNRS, UMR 5234 Fundamental Microbiology and Pathogenicity, F-33000, Bordeaux, France
| | - Linda Wittkop
- Univ Bordeaux, ISPED Inserm, Bordeaux Population Health Research Center, team MORPH3EUS, UMR 1219, CIC-EC 1401, F-33000 Bordeaux, France; CHU de Bordeaux, Pôle de santé publique, Service d'information médicale, F-33000 Bordeaux, France
| | - Clément Bader
- CHU de Bordeaux, Pôle de santé publique, Service d'information médicale, F-33000 Bordeaux, France
| | - Somar Kassab
- Univ Bordeaux, CNRS, UMR 5234 Fundamental Microbiology and Pathogenicity, F-33000, Bordeaux, France
| | - Camille Tumiotto
- Univ Bordeaux, CNRS, UMR 5234 Fundamental Microbiology and Pathogenicity, F-33000, Bordeaux, France; CHU de Bordeaux, Pôle de Biologie et Pathologie, Laboratoire de Virologie, F-33000 Bordeaux, France
| | - Sylvie Berciaud
- CHU de Bordeaux, Pôle de Pédiatrie, F-33000 Bordeaux, France
| | - Harald Wodrich
- Univ Bordeaux, CNRS, UMR 5234 Fundamental Microbiology and Pathogenicity, F-33000, Bordeaux, France
| | - Marie-Edith Lafon
- Univ Bordeaux, CNRS, UMR 5234 Fundamental Microbiology and Pathogenicity, F-33000, Bordeaux, France; CHU de Bordeaux, Pôle de Biologie et Pathologie, Laboratoire de Virologie, F-33000 Bordeaux, France.
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20
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Yang X, Wang Q, Liang B, Wu F, Li H, Liu H, Sheng C, Ma Q, Yang C, Xie J, Li P, Jia L, Wang L, Du X, Qiu S, Song H. An outbreak of acute respiratory disease caused by a virus associated RNA II gene mutation strain of human adenovirus 7 in China, 2015. PLoS One 2017; 12:e0172519. [PMID: 28225804 PMCID: PMC5321423 DOI: 10.1371/journal.pone.0172519] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/06/2017] [Indexed: 01/17/2023] Open
Abstract
Human adenovirus 7 (HAdV-7) strains are a major cause of acute respiratory disease (ARD) among adults and children, associated with fatal pneumonia. An ARD outbreak caused by HAdV-7 that involved 739 college students was reported in this article. To better understand the underlying cause of this large-scale epidemic, virus strains were isolated from infected patients and sequence variations of the whole genome sequence were detected. Evolutionary trees and alignment results indicated that the major capsid protein genes hexon and fibre were strongly conserved among serotype 7 strains in China at that time. Instead, the HAdV-7 strains presented three thymine deletions in the virus associated RNA (VA RNA) II terminal region. We also found that the mutation might lead to increased mRNA expression of an adjacent gene, L1 52/55K, and thus promoted faster growth. These findings suggest that sequence variation of VA RNA II gene was a potential cause of such a severe HAdV-7 infection and this gene should be a new-emerging factor to be monitored for better understanding of HAdV-7 infection.
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Affiliation(s)
- Xiaoxia Yang
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Qiongshu Wang
- Deprtment of Infection Control, Wuhan General Hospital of Guangzhou Military Command, Wuhan, China
| | - Beibei Liang
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Fuli Wu
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Hao Li
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Hongbo Liu
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Chunyu Sheng
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Qiuxia Ma
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Chaojie Yang
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Jing Xie
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Peng Li
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Leili Jia
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Ligui Wang
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Xinying Du
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
| | - Shaofu Qiu
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
- * E-mail: (HS); (SQ)
| | - Hongbin Song
- Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing, China
- * E-mail: (HS); (SQ)
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Abstract
Periodic outbreaks of human adenovirus infections can cause severe illness in people with no known predisposing conditions. The reasons for this increased viral pathogenicity are uncertain. Adenoviruses are constantly undergoing mutation during circulation in the human population, but related phenotypic changes of the viruses are rarely detected because of the infrequency of such outbreaks and the limited biological studies of the emergent strains. Mutations and genetic recombinations have been identified in these new strains. However, the linkage between these genetic changes and increased pathogenicity is poorly understood. It has been observed recently that differences in virus-induced immunopathogenesis can be associated with altered expression of non-mutant viral genes associated with changes in viral modulation of the host innate immune response. Initial small animal studies indicate that these changes in viral gene expression can be associated with enhanced immunopathogenesis in vivo. Available evidence suggests the hypothesis that there is a critical threshold of expression of certain viral genes that determines both the sustainability of viral transmission in the human population and the enhancement of immunopathogenesis. Studies of this possibility will require extension of the analysis of outbreak viral strains from a sequencing-based focus to biological studies of relationships between viral gene expression and pathogenic responses. Advances in this area will require increased coordination among public health organizations, diagnostic microbiology laboratories, and research laboratories to identify, catalog, and systematically study differences between prototype and emergent viral strains that explain the increased pathogenicity that can occur during clinical outbreaks.
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Affiliation(s)
- James Cook
- Division of Infectious Diseases, Department of Medicine, Loyola University Medical Center, 2160 South First Avenue, Maywood, IL 60153, USA
| | - Jay Radke
- Division of Infectious Diseases, Department of Medicine, Loyola University Medical Center, 2160 South First Avenue, Maywood, IL 60153, USA
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Clinical and molecular features of adenovirus type 2, 3, and 7 infections in children in an outbreak in Taiwan, 2011. Clin Microbiol Infect 2016; 23:110-116. [PMID: 27851998 PMCID: PMC7129580 DOI: 10.1016/j.cmi.2016.11.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 02/01/2023]
Abstract
Objectives We studied paediatric patients with human adenovirus (HAdV) infection during the 2011 outbreak in northern Taiwan to define the clinical features of different HAdV genotypes in children. Methods Between January and December 2011, 637 patients <19 years of age exhibited culture-confirmed adenoviral infection in Chang Gung Memorial Hospital, and provided specimens available for genotyping by multiplex real-time PCR. Clinical data were collected retrospectively. Results Excluding five cases with multiple genotypes, 632 cases were included for analysis. Three genotypes were identified, including HAdV-3 (429/632; 67.6%), HAdV-7 (144/632; 22.6%) and HAdV-2 (59/632; 9.8%). Median age was 4.58 years (range 2 months to 18 years), with children infected with HAdV-3 significantly older (82.9% >3 years; p <0.001). Of the 621 inpatients, 98.2% had fevers and all exhibited respiratory symptoms, 75 patients (12.1%) had lower respiratory tract infections, 20 (3.2%) required intensive care (HAdV-2: 1; HAdV-3: 8; and HAdV-7: 11), and three died (all HAdV-7-infected). HAdV-3-infected patients were significantly more likely to have upper respiratory symptoms and a high serum C-reactive protein level >100 mg/L, whereas leucocytosis (white blood cell count >15 000/mm3) was more common in HAdV-2-infected patients (p 0.007). HAdV-7 infections were significantly associated with a longer duration of fever, leucopenia (white blood cell count <5000/mm3), thrombocytopenia (platelet count <150 000/mm3), lower respiratory tract infections, a longer length of hospital stay, and requiring intensive care (all p <0.001). Conclusion Childhood HAdV-2, HAdV-3 and HAdV-7 infections may exhibit different clinical manifestations. Although HAdV-3 was the most prevalent genotype observed during the 2011 Taiwan outbreak, HAdV-7 caused more severe disease characteristics and outcomes.
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Lynch JP, Kajon AE. Adenovirus: Epidemiology, Global Spread of Novel Serotypes, and Advances in Treatment and Prevention. Semin Respir Crit Care Med 2016; 37:586-602. [PMID: 27486739 PMCID: PMC7171713 DOI: 10.1055/s-0036-1584923] [Citation(s) in RCA: 305] [Impact Index Per Article: 38.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Adenoviruses (AdVs) are DNA viruses that typically cause mild infections involving the upper or lower respiratory tract, gastrointestinal tract, or conjunctiva. Rare manifestations of AdV infections include hemorrhagic cystitis, hepatitis, hemorrhagic colitis, pancreatitis, nephritis, or meningoencephalitis. AdV infections are more common in young children, due to lack of humoral immunity. Epidemics of AdV infection may occur in healthy children or adults in closed or crowded settings (particularly military recruits). The disease is more severe and dissemination is more likely in patients with impaired immunity (e.g., organ transplant recipients, human immunodeficiency virus infection). Fatality rates for untreated severe AdV pneumonia or disseminated disease may exceed 50%. More than 50 serotypes of AdV have been identified. Different serotypes display different tissue tropisms that correlate with clinical manifestations of infection. The predominant serotypes circulating at a given time differ among countries or regions, and change over time. Transmission of novel strains between countries or across continents and replacement of dominant viruses by new strains may occur. Treatment of AdV infections is controversial, as prospective, randomized therapeutic trials have not been conducted. Cidofovir is the drug of choice for severe AdV infections, but not all patients require treatment. Live oral vaccines are highly efficacious in reducing the risk of respiratory AdV infection and are in routine use in the military in the United States, but currently are not available to civilians.
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Affiliation(s)
- Joseph P Lynch
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology, Department of Internal Medicine, The David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
| | - Adriana E Kajon
- Department of Infectious Disease, Lovelace Respiratory Research Institute, Albuquerque, New Mexico
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Cheng JL, Peng CC, Chiu NC, Weng LC, Chiu YY, Chang L, Huang DTN, Huang FY, Liu CP, Chi H. Risk factor analysis and molecular epidemiology of respiratory adenovirus infections among children in northern Taiwan, 2009-2013. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2015; 50:418-426. [PMID: 26454422 DOI: 10.1016/j.jmii.2015.08.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/26/2015] [Accepted: 08/28/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND/PURPOSE Respiratory infections caused by human adenoviruses (HAdV) are worldwide, and have significantly increased recently in Taiwan. This study aimed to clarify the molecular epidemiology and risk factors of HAdV severe infections and pneumonia among Taiwanese children. METHODS Patients with HAdV infections and hospitalized in a medical center between 2009 and 2013 were divided into severe or nonsevere HAdV infections based on whether or not they received intensive care. HAdV pneumonia was identified for comparison. The HAdV genotype was determined by sequencing the partial hexon and fiber genes. The nucleotide sequences were compared by phylogenetic analysis. RESULTS The 176 patients (97 boys, 79 girls) had a median age of 3.7 years. The HAdV infections circulated year-round. HAdV B3 (54.5%) was the most common genotype, followed by HAdV C2 (21%), HAdV E4 (8%), and HAdV B7 (6.8%). Thirty-two patients needed intensive care. In multivariate analysis, the risk factors for severe HAdV infections were underlying neurologic diseases [odds ratio (OR): 164.9; p < 0.001], prematurity (OR: 10.9; p = 0.042), and HAdV B7 (OR: 39.5; p = 0.011). Twenty-nine patients had HAdV pneumonia. Patients with underlying neurologic diseases (OR 76.8; p < 0.001), airway anomaly (OR 15.1; p = 0.033), chronic lung diseases (OR 12.5; p = 0.047), weight < 3rd percentile (OR 5.5; p = 0.027), and HAdV B7 (OR 4.2; p = 0.002) had higher incidences of pneumonia. Four with underlying neurologic diseases died of acute respiratory distress syndrome. CONCLUSION HAdV infections circulate all year-round. HAdV B7 is strongly related to severe infections and pneumonia. Underlying neurologic diseases and prematurity are risk factors for severe HAdV infections.
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Affiliation(s)
- Jia Lu Cheng
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
| | - Chun-Chih Peng
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Nan-Chang Chiu
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; MacKay Junior College of Medicine, Nursing, and Management, New Taipei City, Taiwan
| | - Li-Chuan Weng
- Section of Microbiology, Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Yu-Ying Chiu
- Department of Clinical Virology of Laboratory Medicine, MacKay Memorial Hospital, Taipei, Taiwan
| | - Lung Chang
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
| | | | - Fu-Yuan Huang
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
| | - Chang-Pan Liu
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; Section of Microbiology, Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan; Division of Infectious Diseases, Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan
| | - Hsin Chi
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan; Department of Medicine, MacKay Medical College, New Taipei City, Taiwan; MacKay Junior College of Medicine, Nursing, and Management, New Taipei City, Taiwan; Section of Microbiology, Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan.
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Lin YC, Lu PL, Lin KH, Chu PY, Wang CF, Lin JH, Liu HF. Molecular Epidemiology and Phylogenetic Analysis of Human Adenovirus Caused an Outbreak in Taiwan during 2011. PLoS One 2015; 10:e0127377. [PMID: 25992619 PMCID: PMC4436380 DOI: 10.1371/journal.pone.0127377] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/15/2015] [Indexed: 12/19/2022] Open
Abstract
An outbreak of adenovirus has been surveyed in Taiwan in 2011. To better understand the evolution and epidemiology of adenovirus in Taiwan, full-length sequence of hexon and fiber coapsid protein was analyzed using series of phylogenetic and dynamic evolution tools. Six different serotypes were identified in this outbreak and the species B was predominant (HAdV-3, 71.50%; HAdV-7, 15.46%). The most frequent diagnosis was acute tonsillitis (54.59%) and bronchitis (47.83%). Phylogenetic analysis revealed that hexon protein gene sequences were highly conserved for HAdV-3 and HAdV-7 circulation in Taiwan. However, comparison of restriction fragment length polymorphism (RFLP) analysis and phylogenetic trees of fiber gene in HAdV-7 clearly indicated that the predominant genotype in Taiwan has shifted from 7b to 7d. Several positive selection sites were observed in hexon protein. The estimated nucleotide substitution rates of hexon protein of HAdV-3 and HAdV-7 were 0.234×10-3 substitutions/site/year (95% HPD: 0.387~0.095×10-3) and 1.107×10-3 (95% HPD: 0. 541~1.604) respectively; those of the fiber protein of HAdV-3 and HAdV-7 were 1.085×10-3 (95% HPD: 1.767~0.486) and 0.132×10-3 (95% HPD: 0.283~0.014) respectively. Phylodynamic analysis by Bayesian skyline plot (BSP) suggested that using individual gene to evaluate the effective population size might possibly cause miscalculation. In summary, the virus evolution is ongoing, and continuous surveillance of this virus evolution will contribute to the control of the epidemic.
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Affiliation(s)
- Yung-Cheng Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
| | - Po-Liang Lu
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Kuei-Hsiang Lin
- Department of Clinical Laboratory, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Yu Chu
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chu-Feng Wang
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jih-Hui Lin
- Center for Research, Diagnostics and Vaccine Development, Centers for Disease Control, Taipei, Taiwan
- * E-mail: (HFL); (JHL)
| | - Hsin-Fu Liu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
- Center for General Education, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
- * E-mail: (HFL); (JHL)
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Human adenovirus type 7 infection associated with severe and fatal acute lower respiratory illness and nosocomial transmission. J Clin Microbiol 2014; 53:746-9. [PMID: 25520444 DOI: 10.1128/jcm.02517-14] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A 23-year-old male died of severe pneumonia and respiratory failure in a tertiary hospital in Beijing, and 4 out of 55 close contacts developed fever. Molecular analysis confirmed human adenovirus type 7 (HAdV7) as the causative agent. We highlight the importance of early diagnosis and treatment and proper transmission control of HAdV7.
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