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Hu W, Yen YT, Singh S, Kao CL, Wu-Hsieh BA. SARS-CoV regulates immune function-related gene expression in human monocytic cells. Viral Immunol 2012; 25:277-88. [PMID: 22876772 DOI: 10.1089/vim.2011.0099] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Severe acute respiratory syndrome (SARS) is characterized by acute respiratory distress syndrome (ARDS) and pulmonary fibrosis, and monocytes/macrophages are the key players in the pathogenesis of SARS. In this study, we compared the transcriptional profiles of SARS coronavirus (SARS-CoV)-infected monocytic cells against that infected by coronavirus 229E (CoV-229E). Total RNA was extracted from infected DC-SIGN-transfected monocytes (THP-1-DC-SIGN) at 6 and 24 h after infection, and the gene expression was profiled in oligonucleotide-based microarrays. Analysis of immune-related gene expression profiles showed that at 24 h after SARS-CoV infection: (1) IFN-α/β-inducible and cathepsin/proteasome genes were downregulated; (2) hypoxia/hyperoxia-related genes were upregulated; and (3) TLR/TLR-signaling, cytokine/cytokine receptor-related, chemokine/chemokine receptor-related, lysosome-related, MHC/chaperon-related, and fibrosis-related genes were differentially regulated. These results elucidate that SARS-CoV infection regulates immune-related genes in monocytes/macrophages, which may be important to the pathogenesis of SARS.
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Affiliation(s)
- Wanchung Hu
- Graduate Institute of Immunology, National Taiwan University College of Medicine, Taipei, Taiwan, ROC
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52
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Lo YS, Lin SY, Wang SM, Wang CT, Chiu YL, Huang TH, Hou MH. Oligomerization of the carboxyl terminal domain of the human coronavirus 229E nucleocapsid protein. FEBS Lett 2012. [PMID: 23178926 PMCID: PMC7089611 DOI: 10.1016/j.febslet.2012.11.016] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
N and N bind by cross‐linking study (View Interaction: 1, 2, 3, 4) ► The role of the C‐terminal tail of the HCoV‐229E N protein in oligomerization. ► A correlation between oligomerization and thermostability. ► The C‐terminal tail peptide interferes with the oligomerization. ► The development of drugs to disrupt the oligomerization of the viral N protein.
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Affiliation(s)
- Yu-Sheng Lo
- Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung 402, Taiwan
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53
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Liang FY, Lin LC, Ying TH, Yao CW, Tang TK, Chen YW, Hou MH. Immunoreactivity characterisation of the three structural regions of the human coronavirus OC43 nucleocapsid protein by Western blot: implications for the diagnosis of coronavirus infection. J Virol Methods 2012; 187:413-20. [PMID: 23174159 PMCID: PMC7112824 DOI: 10.1016/j.jviromet.2012.11.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 10/15/2012] [Accepted: 11/08/2012] [Indexed: 01/25/2023]
Abstract
Previous studies have reported that a prokaryotic-expressed recombinant nucleocapsid protein (NP) is a suitable reagent for the epidemiological screening of coronavirus infection. In this study, soluble recombinant human coronavirus OC43 (HCoV-OC43) NP was produced to examine the antigenicity of the HCoV-OC43 NP of betacoronavirus. Using the purified recombinant NP as an antigen, a polyclonal antibody from rabbit serum with specificity for HCoV-OC43 NP was generated; this antibody reacts specifically with HCoV-OC43 NP and does not cross-react with other human CoV NPs (including those of SARS-CoV and HCoV-229E) by Western blot. Sera from 26 young adults, 17 middle-aged and elderly patients with respiratory infection, and 15 cord blood samples were also tested. Strong reactivity to the NPs of HCoV-OC43 was observed in 96%, 82%, and 93% of the serum samples from the young adults, respiratory patients, and cord blood samples, respectively. To identify the immunoreactivities of the three structural regions of the NP that are recognised by the rabbit polyclonal antibody and human serum, the antigenicities of three protein fragments, including the N-terminal domain (aa 1-173), the central-linker region (aa 174-300), and the C-terminal domain (aa 301-448), were evaluated by Western blot. The rabbit polyclonal antibody demonstrated greater immunoreactivity to the central-linker region and the C-terminal domain than to the N-terminal domain. Three different patterns for the immunoreactivities of the three structural regions of HCoV-OC43 NP were observed in human serum, suggesting variability in the immune responses that occur during HCoV-OC43 infection in humans. The central-linker region of the NP appeared to be the most highly immunoreactive region for all three patterns observed. The goal of this study was to offer insight into the design of diagnostic tools for HCoV infection.
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Affiliation(s)
- Fang-Ying Liang
- Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
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54
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Messacar K, Robinson CC, Bagdure D, Curtis DJ, Glodé MP, Dominguez SR. Rhino/enteroviruses in hospitalized children: a comparison to influenza viruses. J Clin Virol 2012; 56:41-5. [PMID: 23078869 PMCID: PMC3529827 DOI: 10.1016/j.jcv.2012.09.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/20/2012] [Accepted: 09/24/2012] [Indexed: 11/24/2022]
Abstract
Background The relative impact of human rhino/enteroviruses (HRV/EV) compared to influenza viruses on hospitalized children is unknown. Objectives This retrospective study compared the epidemiology and clinical characteristics of hospitalized patients with HRV/EV to patients hospitalized with influenza virus. Study design Respiratory specimens from hospitalized children submitted between January 1, 2009 and December 31, 2009 to Children's Hospital Colorado Virology Laboratory in Aurora, CO were tested by a commercial multiplex PCR for 16 respiratory viruses and subtypes. Patients with specimens positive for HRV/EV or influenza virus without bacterial or viral co-infection were selected for retrospective chart review. Results Of the 2299 patients with specimens tested during the study period, 427 (18.6%) were singly positive for HRV/EV and 202 (8.8%) for influenza virus (p < 0.01). Children with HRV/EV were more likely to present with increased work of breathing (67.9% vs. 52.5%, p < 0.01) with crackles (36.3% vs. 23.3%, p < 0.01) and wheezing (41.7% vs. 22.8%, p < 0.01) noted on exam. Children hospitalized with HRV/EV had a shorter median length of stay (2 days vs. 3 days, p < 0.01), duration of fever (1 days vs. 3 days, p < 0.01), and duration of hypoxemia (2 days vs. 3 days, p < 0.01) than children with influenza virus. Similar percentages of children with HRV/EV and influenza virus were admitted to the PICU and required positive pressure ventilation. There were no deaths in children hospitalized with HRV/EV, whereas 6 children with influenza virus expired. Conclusions HRV/EVs are common pathogens in hospitalized children associated with serious lower respiratory tract disease and significant morbidity, similar to influenza viruses.
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Affiliation(s)
- Kevin Messacar
- Children's Hospital Colorado, Section of Infectious Diseases, Aurora, CO 80045, United States.
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55
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Community acquired respiratory and gastrointestinal viral infections: challenges in the immunocompromised host. Curr Opin Infect Dis 2012; 25:423-30. [PMID: 22766648 DOI: 10.1097/qco.0b013e328355660b] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE OF REVIEW Newer molecular diagnostic techniques have advanced the field of clinical microbiology and infectious diseases, particularly with respect to characterizing the role that community acquired viruses play in the clinical course and outcomes of the immunocompromised host. This review will examine recent studies describing the impact of adenovirus, rhinovirus, hepatitis E and norovirus in the course of solid organ and stem cell transplant recipients, as well as their epidemiology and implications for infection prevention and control. RECENT FINDINGS Adenovirus transmission is poorly understood; recent studies increasingly point to reactivation of latent infection in the immunocompromised host. Rhinovirus shedding can persist for weeks after acute viral infection, complicating hospital infection control policies. Hepatitis E is increasingly recognized as a potential pathogen in the stem cell and solid organ transplant population, and should be considered in the work-up for unexplained liver function test abnormalities. Similar to rhinovirus, norovirus shedding from the gastrointestinal tract may persist for months in the immunocompromised host; infected patients are at a higher risk for transmitting norovirus compared with infected healthcare workers. SUMMARY Additional studies are needed, particularly with respect to transmission, for these community acquired viral infections, which often have devastating consequences in the immunocompromised patient population.
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56
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Fuller R, Butt H, Noakes PS, Kenyon J, Yam TS, Calder PC. Influence of yeast-derived 1,3/1,6 glucopolysaccharide on circulating cytokines and chemokines with respect to upper respiratory tract infections. Nutrition 2012; 28:665-9. [DOI: 10.1016/j.nut.2011.11.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 11/10/2011] [Accepted: 11/11/2011] [Indexed: 10/28/2022]
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Funk CJ, Wang J, Ito Y, Travanty EA, Voelker DR, Holmes KV, Mason RJ. Infection of human alveolar macrophages by human coronavirus strain 229E. J Gen Virol 2011; 93:494-503. [PMID: 22090214 DOI: 10.1099/vir.0.038414-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Human coronavirus strain 229E (HCoV-229E) commonly causes upper respiratory tract infections. However, lower respiratory tract infections can occur in some individuals, indicating that cells in the distal lung are susceptible to HCoV-229E. This study determined the virus susceptibility of primary cultures of human alveolar epithelial cells and alveolar macrophages (AMs). Fluorescent antibody staining indicated that HCoV-229E could readily infect AMs, but no evidence was found for infection in differentiated alveolar epithelial type II cells and only a very low level of infection in type II cells transitioning to the type I-like cell phenotype. However, a human bronchial epithelial cell line (16HBE) was readily infected. The innate immune response of AMs to HCoV-229E infection was evaluated for cytokine production and interferon (IFN) gene expression. AMs secreted significant amounts of tumour necrosis factor alpha (TNF-α), regulated on activation normal T-cell expressed and secreted (RANTES/CCL5) and macrophage inflammatory protein 1β (MIP-1β/CCL4) in response to HCoV-229E infection, but these cells exhibited no detectable increase in IFN-β or interleukin-29 in mRNA levels. AMs from smokers had reduced secretion of TNF-α compared with non-smokers in response to HCoV-229E infection. Surfactant protein A (SP-A) and SP-D are part of the innate immune system in the distal lung. Both surfactant proteins bound to HCoV-229E, and pre-treatment of HCoV-229E with SP-A or SP-D inhibited infection of 16HBE cells. In contrast, there was a modest reduction in infection in AMs by SP-A, but not by SP-D. In summary, AMs are an important target for HCoV-229E, and they can mount a pro-inflammatory innate immune response to infection.
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Affiliation(s)
- C Joel Funk
- National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
| | - Jieru Wang
- National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
| | - Yoko Ito
- National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
| | - Emily A Travanty
- National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
| | - Dennis R Voelker
- National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
| | - Kathryn V Holmes
- Department of Microbiology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Robert J Mason
- National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
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58
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Blanchard EG, Miao C, Haupt TE, Anderson LJ, Haynes LM. Development of a recombinant truncated nucleocapsid protein based immunoassay for detection of antibodies against human coronavirus OC43. J Virol Methods 2011; 177:100-6. [PMID: 21801752 PMCID: PMC7112803 DOI: 10.1016/j.jviromet.2011.07.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 07/08/2011] [Accepted: 07/12/2011] [Indexed: 11/30/2022]
Abstract
Human coronaviruses are one of the main causes of upper respiratory tract infections in humans. While more often responsible for mild illness, they have been associated with illnesses that require hospitalization. In this study, an assay for one of the human coronaviruses, OC43, was developed using a truncated recombinant nucleocapsid (N) protein antigen in an enzyme immunosorbent assay (ELISA) and evaluated using serum collected from HCoV-OC43-infected patients, healthy adults, and patients with other respiratory virus infections. Results showed that the diagnostic sensitivity and specificity of the assay were 90.9% (10/11) and 82.9% (39/47), respectively. To evaluate the clinical utility of the ELISA, serum samples collected from patients during an outbreak of HCoV-OC43 infection and previously identified as positive by HCoV-OC43 whole N ELISA were screened resulting in 100% diagnosis agreement between the testing methods. These results suggest that this assay offers a reliable method to detect HCoV-OC43 infection and may be a useful tool in coronavirus seroepidemiological studies.
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Affiliation(s)
- Elisabeth G Blanchard
- National Center for Immunization and Respiratory Diseases, Division of Viral Diseases, Gastroenteritis and Respiratory Viruses Laboratory Branch, Centers for Disease Control and Prevention (CDC), Atlanta, GA 30333, USA.
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59
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An Outbreak of Human Coronavirus OC43 Infection and Serological Cross-reactivity with SARS Coronavirus. CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY 2011; 17:330-6. [PMID: 18382647 DOI: 10.1155/2006/152612] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Accepted: 09/22/2006] [Indexed: 12/28/2022]
Abstract
BACKGROUND In summer 2003, a respiratory outbreak was investigated in British Columbia, during which nucleic acid tests and serology unexpectedly indicated reactivity for severe acute respiratory syndrome coronavirus (SARS-CoV). METHODS Cases at a care facility were epidemiologically characterized and sequentially investigated for conventional agents of respiratory infection, SARS-CoV and other human CoVs. Serological cross-reactivity between SARS-CoV and human CoV-OC43 (HCoV-OC43) was investigated by peptide spot assay. RESULTS Ninety-five of 142 residents (67%) and 53 of 160 staff members (33%) experienced symptoms of respiratory infection. Symptomatic residents experienced cough (66%), fever (21%) and pneumonia (12%). Eight residents died, six with pneumonia. No staff members developed pneumonia. Findings on reverse transcriptase-polymerase chain reaction assays for SARS-CoV at a national reference laboratory were suspected to represent false positives, but this was confounded by concurrent identification of antibody to N protein on serology. Subsequent testing by reverse transcriptase-polymerase chain reaction confirmed HCoV-OC43 infection. Convalescent serology ruled out SARS. Notably, sera demonstrated cross-reactivity against nucleocapsid peptide sequences common to HCoV-OC43 and SARS-CoV. CONCLUSIONS These findings underscore the virulence of human CoV-OC43 in elderly populations and confirm that cross-reactivity to antibody against nucleocapsid proteins from these viruses must be considered when interpreting serological tests for SARS-CoV.
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60
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McErlean P, Greiman A, Favoreto S, Avila PC. Viral diversity in asthma. Immunol Allergy Clin North Am 2011; 30:481-95, v. [PMID: 21029933 PMCID: PMC2967440 DOI: 10.1016/j.iac.2010.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Peter McErlean
- Division of Allergy-Immunology, Feinberg School of Medicine, Northwestern University, 240 East Huron, McGaw M530h, Chicago, IL 60611, USA.
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61
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Rollinger JM, Schmidtke M. The human rhinovirus: human-pathological impact, mechanisms of antirhinoviral agents, and strategies for their discovery. Med Res Rev 2011; 31:42-92. [PMID: 19714577 PMCID: PMC7168442 DOI: 10.1002/med.20176] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
As the major etiological agent of the common cold, human rhinoviruses (HRV) cause millions of lost working and school days annually. Moreover, clinical studies proved an association between harmless upper respiratory tract infections and more severe diseases e.g. sinusitis, asthma, and chronic obstructive pulmonary disease. Both the medicinal and socio-economic impact of HRV infections and the lack of antiviral drugs substantiate the need for intensive antiviral research. A common structural feature of the approximately 100 HRV serotypes is the icosahedrally shaped capsid formed by 60 identical copies of viral capsid proteins VP1-4. The capsid protects the single-stranded, positive sense RNA genome of about 7,400 bases in length. Both structural as well as nonstructural proteins produced during the viral life cycle have been identified as potential targets for blocking viral replication at the step of attachment, entry, uncoating, RNA and protein synthesis by synthetic or natural compounds. Moreover, interferon and phytoceuticals were shown to protect host cells. Most of the known inhibitors of HRV replication were discovered as a result of empirical or semi-empirical screening in cell culture. Structure-activity relationship studies are used for hit optimization and lead structure discovery. The increasing structural insight and molecular understanding of viral proteins on the one hand and the advent of innovative computer-assisted technologies on the other hand have facilitated a rationalized access for the discovery of small chemical entities with antirhinoviral (anti-HRV) activity. This review will (i) summarize existing structural knowledge about HRV, (ii) focus on mechanisms of anti-HRV agents from synthetic and natural origin, and (iii) demonstrate strategies for efficient lead structure discovery.
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Affiliation(s)
- Judith M Rollinger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 52c, A-6020 Innsbruck, Austria.
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62
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Ho MS. Severe Acute Respiratory Syndrome (SARS). TROPICAL INFECTIOUS DISEASES: PRINCIPLES, PATHOGENS AND PRACTICE 2011. [PMCID: PMC7150041 DOI: 10.1016/b978-0-7020-3935-5.00059-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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63
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Prevalence of antibodies to four human coronaviruses is lower in nasal secretions than in serum. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2010; 17:1875-80. [PMID: 20943876 DOI: 10.1128/cvi.00278-10] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Little is known about the prevalence of mucosal antibodies induced by infection with human coronaviruses (HCoV), including HCoV-229E and -OC43 and recently described strains (HCoV-NL63 and -HKU1). By enzyme-linked immunosorbent assay, we measured anti-HCoV IgG antibodies in serum and IgA antibodies in nasal wash specimens collected at seven U.S. sites from 105 adults aged 50 years and older (mean age, 67 ± 9 years) with chronic obstructive pulmonary disease. Most patients (95 [90%]) had at least one more chronic disease. More patients had serum antibody to each HCoV strain (104 [99%] had antibody to HCoV-229E, 105 [100%] had antibody to HCoV-OC43, 103 [98%] had antibody to HCoV-NL63, and 96 [91%] had antibody to HCoV-HKU1) than had antibody to each HCoV strain in nasal wash specimens (12 [11%] had antibody to HCoV-229E, 22 [22%] had antibody to HCoV-OC43, 8 [8%] had antibody to HCoV-NL63, and 31 [31%] had antibody to HCoV-HKU1), respectively (P < 0.0001). The proportions of subjects with IgA antibodies in nasal wash specimens and the geometric mean IgA antibody titers were statistically higher for HCoV-OC43 and -HKU1 than for HCoV-229E and -NL63. A higher proportion of patients with heart disease than not had IgA antibodies to HCoV-NL63 (6 [16%] versus 2 [3%]; P = 0.014). Correlations were highest for serum antibody titers between group I strains (HCoV-229E and -NL63 [r = 0.443; P < 0.0001]) and between group II strains (HCoV-OC43 and -HKU1 [r = 0.603; P < 0.0001]) and not statistically significant between HCoV-NL63 and -OC43 and between HCoV-NL63 and -HKU1. Patients likely had experienced infections with more than one HCoV strain, and IgG antibodies to these HCoV strains in serum were more likely to be detected than IgA antibodies to these HCoV strains in nasal wash specimens.
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Chen IJ, Chou CC, Liu CL, Lee CC, Kan LS, Hou MH. Crystallization and preliminary X-ray diffraction analysis of the N-terminal domain of human coronavirus OC43 nucleocapsid protein. Acta Crystallogr Sect F Struct Biol Cryst Commun 2010; 66:815-8. [PMID: 20606281 PMCID: PMC2898469 DOI: 10.1107/s1744309110017616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2010] [Accepted: 05/13/2010] [Indexed: 11/25/2022]
Abstract
The N-terminal domain of nucleocapsid protein from human coronavirus OC43 (HCoV-OC43 N-NTD) mostly contains positively charged residues and has been identified as being responsible for RNA binding during ribonucleocapsid formation in the coronavirus. In this study, the crystallization and preliminary crystallographic analysis of HCoV-OC43 N-NTD (amino acids 58-195) with a molecular weight of 20 kDa are reported. HCoV-OC43 N-NTD was crystallized at 293 K using PEG 1500 as a precipitant and a 99.9% complete native data set was collected to 1.7 A resolution at 100 K with an overall R(merge) of 5.0%. The crystals belonged to the hexagonal space group P6(5), with unit-cell parameters a = 81.57, c = 42.87 A. Solvent-content calculations suggest that there is likely to be one subunit of N-NTD in the asymmetric unit.
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Affiliation(s)
- I-Jung Chen
- Department of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan
| | - Chia-Cheng Chou
- National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan
| | - Chia-Ling Liu
- Department of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan
| | - Cheng-Chung Lee
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Lou-Sing Kan
- Institute of Bioengineering, Tatung University, Taipei 104, Taiwan
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Ming-Hon Hou
- Department of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan
- Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung 402, Taiwan
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65
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Risku M, Lappalainen S, Räsänen S, Vesikari T. Detection of human coronaviruses in children with acute gastroenteritis. J Clin Virol 2010; 48:27-30. [PMID: 20233673 PMCID: PMC7108425 DOI: 10.1016/j.jcv.2010.02.013] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Revised: 02/17/2010] [Accepted: 02/17/2010] [Indexed: 12/28/2022]
Abstract
BACKGROUND Human coronaviruses (HCoVs) are known respiratory pathogens. Moreover, coronavirus-like particles have been seen by electron microscope in stools, and SARS-HCoV has been isolated from intestinal tissue and detected in stool samples. OBJECTIVES To find out if HCoVs can be found in stools of children with acute gastroenteritis and to assess the significance of HCoVs in the etiology of acute gastroenteritis in children. STUDY DESIGN 878 stool specimens from children with acute gastroenteritis and 112 from control children were tested by RT-PCR to detect HCoV groups 1B, 2A and SARS. HCoVs were typed by sequencing all PCR positive samples. RESULTS Twenty-two (2.5%) of the 878 stool specimens of children with acute gastroenteritis were positive for HCoVs. The following HCoV types were detected: OC43 (10 cases, 45.5%), HKU1 (6 cases, 27.3%), 229E (2 cases, 9.1%) and NL63 (4 cases, 18.2%). In 4 of the cases a HCoV was the only detected virus; in the remaining cases rotavirus or norovirus was found in the same sample. In control groups there were two HCoV positive samples of 112 tested. CONCLUSIONS This study shows that all known non-SARS HCoVs can be found in stools of children with acute gastroenteritis. On the basis of this study, the significance of coronaviruses as gastrointestinal pathogens in children appears minor, since most of the coronavirus findings were co-infections with known gastroenteritis viruses.
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Affiliation(s)
- Minna Risku
- Department of Virology, Medical School, Biokatu 10, FI-33014 University of Tampere, Tampere, Finland.
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66
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Huang CY, Hsu YL, Chiang WL, Hou MH. Elucidation of the stability and functional regions of the human coronavirus OC43 nucleocapsid protein. Protein Sci 2010; 18:2209-18. [PMID: 19691129 PMCID: PMC2788276 DOI: 10.1002/pro.225] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Human coronavirus OC43 (HCoV-OC43) is one of the causes of the “common cold” in human during seasons of cold weather. The primary function of the HCoV-OC43 nucleocapsid protein (N protein) is to recognize viral genomic RNA, which leads to ribonucleocapsid formation. Here, we characterized the stability and identified the functional regions of the recombinant HCoV-OC43 N protein. Circular dichroism and fluorescence measurements revealed that the HCoV-OC43 N protein is more highly ordered and stabler than the SARS-CoV N protein previously studied. Surface plasmon resonance (SPR) experiments showed that the affinity of HCoV-OC43 N protein for RNA was approximately fivefold higher than that of N protein for DNA. Moreover, we found that the HCoV-OC43 N protein contains three RNA-binding regions in its N-terminal region (residues 1–173) and central-linker region (residues 174–232 and 233–300). The binding affinities of the truncated N proteins and RNA follow the order: residues 1–173–residues 233–300 > residues 174–232. SPR experiments demonstrated that the C-terminal region (residues 301–448) of HCoV-OC43 N protein lacks RNA-binding activity, while crosslinking and gel filtration analyses revealed that the C-terminal region is mainly involved in the oligomerization of the HCoV-OC43 N protein. This study may benefit the understanding of the mechanism of HCoV-OC43 nucleocapsid formation.
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Affiliation(s)
- Chun-Yu Huang
- Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan
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Linsuwanon P, Payungporn S, Samransamruajkit R, Posuwan N, Makkoch J, Theanboonlers A, Poovorawan Y. High prevalence of human rhinovirus C infection in Thai children with acute lower respiratory tract disease. J Infect 2009; 59:115-21. [PMID: 19556008 PMCID: PMC7172887 DOI: 10.1016/j.jinf.2009.05.009] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Revised: 05/22/2009] [Accepted: 05/22/2009] [Indexed: 11/04/2022]
Abstract
Objective To determine the prevalence of human rhinoviruses (HRV) infections in children with lower respiratory disease in Thailand and monitor the association between species of HRV and clinical presentation in hospitalized paediatric patients. Method Two hundred and eighty-nine nasopharyngeal (NP) suction specimens were collected from hospitalized paediatric patients admitted to King Chulalongkorn Memorial Hospital, Thailand during February 2006–2007. Nucleic acids were extracted from each sample with subsequent amplification of VP4/2 by semi-nested RT-PCR for HRV detection. Other viral respiratory pathogens were also detected by PCR, RT-PCR or real time PCR. Nucleotide sequences of the VP4 region were used for genotyping and phylogenetic tree construction. Result In total, 87 of 289 specimens were positive for HRV indicating an annual prevalence of 30%. Wheezing or asthma exacerbation was the most common clinical presentation observed in infected patients. Sequence analysis and phylogenetic tree showed that 29 (33%) and 8 (9%) specimens belonged to HRV-A and HRV-B, respectively. Most of the HRV positive samples were HRV-C (58%). Moreover, species C was predominantly found in the paediatric population of Thailand in raining season (p < 0.05). The frequency of co-infection of HRV-C with other respiratory viral pathogens was approximately 40%. Conclusion HRV-C represents the predominant species and is one of the etiologic agents in acute lower respiratory tract infection, causes of wheezing and asthma exacerbation in infants and young children in Thailand.
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Affiliation(s)
- Piyada Linsuwanon
- Center of Excellence in Clinical Virology, Department of Paediatrics, Chulalongkorn University, Rama IV, Patumwan, Bangkok 10330, Thailand
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Gorse GJ, O'Connor TZ, Hall SL, Vitale JN, Nichol KL. Human coronavirus and acute respiratory illness in older adults with chronic obstructive pulmonary disease. J Infect Dis 2009; 199:847-57. [PMID: 19239338 PMCID: PMC7110218 DOI: 10.1086/597122] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND The clinical features and incidence of human coronavirus (HCoV) infections in chronically ill older adults need better definition. METHODS HCoV infection was determined on the basis of a 4-fold increase in serum antibody and the detection of HCoV by reverse-transcription polymerase chain reaction. Laboratory-documented influenza (LDI) was detected by serologic assay and culture. HCoV illnesses were compared with other acute respiratory illnesses identified by active surveillance, during the 1998-99 winter respiratory-virus season, of 2215 patients with chronic obstructive pulmonary disease who were > or = 50 years old and who received influenza vaccines. RESULTS HCoV-229E and HCoV-OC43 were associated with 90 (14%) of 665 illnesses (HCoV-229E in 22, HCoV-OC43 in 67, and both in 1), LDI with 107 (16%) of 678 illnesses. In multivariate logistic regression analysis, myalgia was less likely with HCoV infection than with LDI (OR, 0.27 [95% confidence limit, 0.13-0.58]). A majority of these HCoV and LDI illnesses exhibited each of 11 symptoms and signs of acute respiratory illness. Spirometric results worsened most often with LDI, and many acute respiratory illnesses, regardless of etiology, were associated with hospitalization. A total of 8 illnesses were associated with HCoV-NL63, 1 with HCoV-HKU1. CONCLUSIONS The frequencies of HCoV and LDI illnesses were similar. HCoV illness was less severe than LDI illness, was accompanied by multiple respiratory and systemic symptoms, and was associated with hospitalization.
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Affiliation(s)
- Geoffrey J Gorse
- Department of Veterans Affairs Medical Center, St. Louis, Missouri, USA.
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69
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Walsh EE, Peterson DR, Falsey AR. Human metapneumovirus infections in adults: another piece of the puzzle. ACTA ACUST UNITED AC 2009; 168:2489-96. [PMID: 19064834 DOI: 10.1001/archinte.168.22.2489] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Each winter respiratory viruses account for a significant proportion of serious respiratory illness, including hospitalization, in older adults and those with underlying medical conditions. We describe the incidence and clinical impact of human metapneumovirus (HMPV), a newly identified virus, in adults. METHODS Infection with HMPV was identified in 3 prospectively enrolled adult cohorts (young persons 19-40 years old, healthy adults > or =65 years old, and high-risk adults) and a hospitalized cohort for 4 consecutive winters (November 15 through April 15 for the years 1999 through 2003). The incidence and clinical impact were compared with those of influenza A and respiratory syncytial virus infection in the same groups. RESULTS Using reverse transcriptase-polymerase chain reaction and serologic testing, we identified HMPV infection in 2.2% to 10.5% of the 3 prospectively followed-up outpatient cohorts annually. Asymptomatic infection was common, accounting for at least 38.8% of infections in each of the cohorts. Symptoms, when they occurred, were typical of an upper respiratory tract illness, although a few high-risk persons required hospitalization. Among 1386 hospitalized patients, HMPV was identified in 8.5% (range, 4.4%-13.2%), depending on the year. Dual viral infection was identified in 22.9%. Wheezing was frequent (80%) and more common than with influenza. Twelve percent required intensive care unit admission and 11% ventilatory support, rates similar to those for influenza and respiratory syncytial virus infection. CONCLUSIONS In adults of all ages, HMPV is a common infection, and, although often asymptomatic, it can result in serious infection that requires hospitalization. Like influenza A and respiratory syncytial virus, HMPV is also a major contributor to the burden of wintertime respiratory illnesses in older adults.
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Affiliation(s)
- Edward E Walsh
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA.
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70
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Viral Infections. INFECTIOUS DISEASE IN THE AGING 2009. [PMCID: PMC7123043 DOI: 10.1007/978-1-60327-534-7_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although influenza remains indisputably the most significant viral pathogen in adults, other viruses such as respiratory syncytial virus, parainfluenza viruses, and human metapneumovirus are now recognized as significant pathogens in older populations. Oseltamivir and zanamivir are antiviral agents that are effective for the treatment and prophylaxis of influenza A and B. For treatment and for optimal effect, therapy should be initiated within 48 h of symptom onset. Infection with hepatitis viruses may be more severe in older adults with more fulminate disease as observed with acute hepatitis A and a more rapid progression to cirrhosis with hepatitis C. Outbreaks of viral gastroenteritis are common in long-term care facilities, and infection may lead to death due to dehydration and oliguria. The incidence of herpes zoster increases with advancing age and carries with it a significant risk of post herpetic neuralgia. The use of antiviral medications and corticosteroids may reduce the incidence and severity of chronic pain.
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71
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Mackay IM, Arden KE, Lambert SB. Epidemiology. COMMOND COLD 2009. [PMCID: PMC7123965 DOI: 10.1007/978-3-7643-9912-2_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The common cold is the result of an upper respiratory tract infection causing an acute syndrome characterised by a combination of non-specific symptoms, including sore throat, cough, fever, rhinorrhoea, malaise, headache, and myalgia. Respiratory viruses, alone or in combination, are the most common cause. The course f illness can be complicated by bacterial agents, causing pharyngitis or sinusitis, but the are a rare cause of cold and flu-like illnesses (CFLIs). Our understanding of CFLI epidemiology has been enhanced by molecular detection methods, particularly polymerase chain reaction (PCR) testing. PCR has not only improved detection of previously known viruses, but within the last decade has resulted in the detection of many divergent novel respiratory virus species. Human rhinovirus (HRV) infections cause nearly all CFLIs and they can be responsible for asthma and chronic obstructive pulmonary disease exacerbations. HRVs are co-detected with other respiratory viruses in statistically significant patterns, with HRVs occurring in the lowest proportion of co-detections, compared to most other respiratory viruses. Some recently identified rhinoviruses may populate an entirely new putative HRV species; HRV C. Further work is required to confirm a causal role for these newly identified viruses in CFLIs. The burden of illness associated with CFLIs is poorly documented, but where data are available, the impact of CFLIs is considerable. Individual infections, although they do not commonly result in more severe respiratory tract illness, are associated with substantial direct and indirect resource use. The product of frequency and burden for CFLIs is likely to be greater in magnitude than for any other respiratory syndrome, but further work is required to document this. Our understanding of the viral causes of CLFIs, although incomplete, has improved in recent years. Documenting burden is also an important step in progress towards improved control and management of these illnesses.
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72
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Abstract
BACKGROUND Human rhinoviruses (HRV) are now considered major respiratory pathogens. We sought to determine whether HRV are a cause of wheezing and/or hospitalization in children <2 years old. METHODS A polymerase chain reaction assay was used to screen for HRV infection in 4 categories of children <2 years old: (1) with symptoms of respiratory tract disease without wheezing; (2) with wheezing with or without other symptoms; (3) who were asymptomatic and; (4) who had a respiratory specimen submitted to a diagnostic laboratory. All specimens were collected between January and December 2004. Phylogenetic analyses were performed on most HRV isolates. RESULTS Twenty-eight (17%) of 165 children with symptoms of respiratory infection without wheezing; 21 (26.3%) of 80 children with wheezing; 3 (3%) of 93 asymptomatic children; and 47 (23.3%) of 202 children with specimens submitted to the diagnostic laboratory tested positive for HRV. The difference between the rates of infection in the asymptomatic group and in each of the 3 other categories was statistically significant (P </= 0.01). Among HRV-positive children with samples submitted to the diagnostic laboratory, 55% were hospitalized, which was similar to that observed for respiratory syncytial virus (52.7%) among children of a similar age group and time period (P = 0.85). Diverse groups of HRV were circulating during the 1-year study period. CONCLUSIONS HRV are important pathogens among children <2 years old and are responsible for a significant proportion of wheezing this age group. The hospitalization rates of HRV-positive children seem to be similar to that of respiratory syncytial virus.
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73
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Frieman M, Baric R. Mechanisms of severe acute respiratory syndrome pathogenesis and innate immunomodulation. Microbiol Mol Biol Rev 2008; 72:672-85, Table of Contents. [PMID: 19052324 PMCID: PMC2593566 DOI: 10.1128/mmbr.00015-08] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The modulation of the immune response is a common practice of many highly pathogenic viruses. The emergence of the highly pathogenic coronavirus severe acute respiratory virus (SARS-CoV) serves as a robust model system to elucidate the virus-host interactions that mediate severe end-stage lung disease in humans and animals. Coronaviruses encode the largest positive-sense RNA genome of approximately 30 kb, encode a variety of replicase and accessory open reading frames that are structurally unique, and encode novel enzymatic functions among RNA viruses. These viruses have broad or specific host ranges, suggesting the possibility of novel strategies for targeting and regulating host innate immune responses following virus infection. Using SARS-CoV as a model, we review the current literature on the ability of coronaviruses to interact with and modify the host intracellular environment during infection. These studies are revealing a rich set of novel viral proteins that engage, modify, and/or disrupt host cell signaling and nuclear import machinery for the benefit of virus replication.
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Affiliation(s)
- Matthew Frieman
- University of North Carolina, 210 McGaveran-Greenberg Hall, CB 7435, Chapel Hill, NC 27599, USA
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74
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Dominguez SR, Briese T, Palacios G, Hui J, Villari J, Kapoor V, Tokarz R, Glodé MP, Anderson MS, Robinson CC, Holmes KV, Lipkin WI. Multiplex MassTag-PCR for respiratory pathogens in pediatric nasopharyngeal washes negative by conventional diagnostic testing shows a high prevalence of viruses belonging to a newly recognized rhinovirus clade. J Clin Virol 2008; 43:219-22. [PMID: 18674964 PMCID: PMC2603178 DOI: 10.1016/j.jcv.2008.06.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2008] [Revised: 06/03/2008] [Accepted: 06/09/2008] [Indexed: 11/02/2022]
Abstract
BACKGROUND Respiratory infections are the most common infectious diseases in humans worldwide and are a leading cause of death in children less than 5 years of age. OBJECTIVES Identify candidate pathogens in pediatric patients with unexplained respiratory disease. STUDY DESIGN Forty-four nasopharyngeal washes collected during the 2004-2005 winter season from pediatric patients with respiratory illnesses that tested negative for 7 common respiratory pathogens by culture and direct immunofluorescence assays were analyzed by MassTag-PCR. To distinguish human enteroviruses (HEV) and rhinoviruses (HRV), samples positive for picornaviruses were further characterized by sequence analysis. RESULTS Candidate pathogens were detected by MassTag PCR in 27 of the 44 (61%) specimens that previously were rated negative. Sixteen of these 27 specimens (59%) contained picornaviruses; of these 9 (57%) contained RNA of a recently discovered clade of rhinoviruses. Bocaviruses were detected in three patients by RT-PCR. CONCLUSIONS Our study confirms that multiplex MassTag-PCR enhances the detection of pathogens in clinical specimens, and shows that previously unrecognized rhinoviruses, that potentially form a species HRV-C, may cause a significant amount of pediatric respiratory disease.
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Affiliation(s)
- Samuel R Dominguez
- Department of Pediatrics, The Children's Hospital, University of Colorado Denver School of Medicine, Aurora, CO, USA
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75
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Abstract
BACKGROUND Human rhinoviruses (HRVs) are the most common cause of viral illness worldwide but today, less than half the strains have been sequenced and only a handful examined structurally. This viral super-group, known for decades, has still to face the full force of a molecular biology onslaught. However, newly identified viruses (NIVs) including human metapneumovirus and bocavirus and emergent viruses including SARS-CoV have already been exhaustively scrutinized. The clinical impact of most respiratory NIVs is attributable to one or two major strains but there are 100+ distinct HRVs and, because we have never sought them independently, we must arbitrarily divide the literature's clinical impact findings among them. Early findings from infection studies and use of inefficient detection methods have shaped the way we think of 'common cold' viruses today. OBJECTIVES To review past HRV-related studies in order to put recent HRV discoveries into context. RESULTS HRV infections result in undue antibiotic prescriptions, sizable healthcare-related expenditure and exacerbation of expiratory wheezing associated with hospital admission. CONCLUSION The finding of many divergent and previously unrecognized HRV strains has drawn attention and resources back to the most widespread and frequent infectious agent of humans; providing us the chance to seize the advantage in a decades-long cold war.
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Affiliation(s)
- Ian M Mackay
- Queensland Paediatric Infectious Diseases Laboratory, Sir Albert Sakzewski Virus Research Centre, Royal Children's Hospital, Queensland, Australia.
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76
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Kammila S, Das D, Bhatnagar PK, Sunwoo HH, Zayas-Zamora G, King M, Suresh MR. A rapid point of care immunoswab assay for SARS-CoV detection. J Virol Methods 2008; 152:77-84. [PMID: 18620761 PMCID: PMC2678951 DOI: 10.1016/j.jviromet.2008.05.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2008] [Revised: 04/18/2008] [Accepted: 05/08/2008] [Indexed: 01/09/2023]
Abstract
The emergence of severe acute respiratory syndrome (SARS) resulted in several outbreaks worldwide. Early tests for diagnosis were not always conclusive in identifying a SARS suspected patient. Nucleocapsid protein (NP) is the most predominant virus derived structural protein which is shed in high amounts in serum and nasopharyngeal aspirate during the first week of infection. As part of such efforts, a simple, easy to use immunoswab method was developed by generating a panel of monoclonal antibodies (MAbs), Bispecific MAbs and chicken polyclonal IgY antibody against the SARS-CoV nucleocapsid protein (NP). Employing the MAb-based immunoswab, an NP concentration of 200 pg/mL in saline and pig nasopharyngeal aspirate, and 500 pg/mL in rabbit serum were detected. BsMAb-based immunoswabs detected an NP concentration of 20 pg/mL in saline, 500 pg/mL in rabbit serum and 20-200 pg/mL in pig nasopharyngeal aspirate. Polyclonal IgY-based immunoswabs detected an NP concentration of 10 pg/mL in pig nasopharyngeal aspirate providing the most sensitive SARS point of care assay. Results show that the robust immunoswab method of detecting SARS-CoV NP antigen can be developed into an easy and effective way of identifying SARS suspected individuals during a future SARS epidemic, thereby reducing and containing the transmission. The key feature of this simple immunoswab diagnostic assay is its ability to detect the presence of the SARS-CoV antigen within 45-60 min with the availability of the body fluid samples.
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Affiliation(s)
- Sriram Kammila
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 11304-89 Avenue, Edmonton, Alberta, Canada T6G 2N8
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Hansbro NG, Horvat JC, Wark PA, Hansbro PM. Understanding the mechanisms of viral induced asthma: new therapeutic directions. Pharmacol Ther 2008; 117:313-53. [PMID: 18234348 PMCID: PMC7112677 DOI: 10.1016/j.pharmthera.2007.11.002] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2007] [Accepted: 11/19/2007] [Indexed: 12/12/2022]
Abstract
Asthma is a common and debilitating disease that has substantially increased in prevalence in Western Societies in the last 2 decades. Respiratory tract infections by respiratory syncytial virus (RSV) and rhinovirus (RV) are widely implicated as common causes of the induction and exacerbation of asthma. These infections in early life are associated with the induction of wheeze that may progress to the development of asthma. Infections may also promote airway inflammation and enhance T helper type 2 lymphocyte (Th2 cell) responses that result in exacerbations of established asthma. The mechanisms of how RSV and RV induce and exacerbate asthma are currently being elucidated by clinical studies, in vitro work with human cells and animal models of disease. This research has led to many potential therapeutic strategies and, although none are yet part of clinical practise, they show much promise for the prevention and treatment of viral disease and subsequent asthma.
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Key Words
- aad, allergic airways disease
- ahr, airway hyperresponsiveness
- apc, antigen-presenting cell
- asm, airway smooth muscle
- balf, broncho-alveolar lavage fluid
- bec, bronchoepithelial cell
- bfgf, basic fibroblast growth factor
- cam, cellular adhesion molecules
- ccr, cc chemokine receptor
- cgrp, calcitonin gene-related peptide
- crp, c reactive protein
- dsrna, double stranded rna
- ecp, eosinophil cationic protein
- ena-78, epithelial neutrophil-activating peptide-78
- fev1, forced expiratory volume
- fi, formalin-inactivated
- g-csf and gm-csf, granulocyte and granulocyte-macrophage colony stimulating factor
- ics, inhaled corticosteroid
- ifn, interferon, ifn
- il, interleukin
- ip-10, ifn-γ inducible protein-10
- laba, long acting beta agonist
- ldh, lactate dehydrogenase
- ldlpr, low density lipoprotein receptor
- lrt, lower respiratory tract
- lt, leukotriene
- mab, monoclonal antibody
- mcp, monocyte chemoattractant proteins
- mdc, myeloid dendritic cell
- mhc, major histocompatibility
- mip, macrophage inhibitory proteins
- mpv, metapneumovirus
- nf-kb, nuclear factor (nf)-kb
- nk cells, natural killer cells
- nk1, neurogenic receptor 1
- or, odds ratio
- paf, platelet-activating factor
- pbmc, peripheral blood mononuclear cell
- pdc, plasmacytoid dendritic cell
- pef, peak expiratory flow
- penh, enhanced pause
- pfu, plaque forming units
- pg, prostaglandin
- pkr, protein kinase r
- pvm, pneumonia virus of mice
- rad, reactive airway disease
- rantes, regulated on activation normal t cell expressed and secreted
- rr, relative risk
- rsv, respiratory syncytial virus
- rv, rhinovirus (rv)
- ssrna, single stranded rna
- tgf, transforming growth factor
- th, t helper lymphocytes
- tlr, toll-like receptors
- tnf, tumor necrosis factor
- urt, upper respiratory tract
- vegf, vascular endothelial growth factor
- vs, versus
- wbc, white blood cell
- respiratory syncytial virus
- rhinovirus
- induction
- exacerbation
- asthma
- allergy
- treatment
- prevention
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Affiliation(s)
- Nicole G. Hansbro
- Priority Research Centre for Asthma and Respiratory Disease, Faculty of Health, The University of Newcastle, New South Wales 2308, Australia
- Vaccines, Immunology/Infection, Viruses and Asthma Group, Hunter Medical Research Institute, Locked Bag 1 New Lambton, New South Wales 2305, Australia
| | - Jay C. Horvat
- Priority Research Centre for Asthma and Respiratory Disease, Faculty of Health, The University of Newcastle, New South Wales 2308, Australia
- Vaccines, Immunology/Infection, Viruses and Asthma Group, Hunter Medical Research Institute, Locked Bag 1 New Lambton, New South Wales 2305, Australia
| | - Peter A. Wark
- Priority Research Centre for Asthma and Respiratory Disease, Faculty of Health, The University of Newcastle, New South Wales 2308, Australia
- Vaccines, Immunology/Infection, Viruses and Asthma Group, Hunter Medical Research Institute, Locked Bag 1 New Lambton, New South Wales 2305, Australia
- Department of Respiratory & Sleep Medicine, John Hunter Hospital & Sleep Medicine, School of Medical Practice, University of Newcastle, Newcastle, Australia
| | - Philip M. Hansbro
- Priority Research Centre for Asthma and Respiratory Disease, Faculty of Health, The University of Newcastle, New South Wales 2308, Australia
- Vaccines, Immunology/Infection, Viruses and Asthma Group, Hunter Medical Research Institute, Locked Bag 1 New Lambton, New South Wales 2305, Australia
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Abstract
PURPOSE OF REVIEW The purpose of this review is to summarize the recent changes in our understanding of the epidemiology and clinical manifestations of rhinovirus infection that have occurred as a result of the improved diagnostic sensitivity provided by the reverse transcriptase PCR assays. RECENT FINDINGS Rhinovirus infection is now recognized as an important cause of acute exacerbations of asthma in school-aged children. Along with other respiratory viruses, rhinovirus infection is also a cause of exacerbations of cystic fibrosis. There is evidence that rhinovirus can infect the lower airways and may be associated with bronchiolitis and pneumonia in immunocompetent children and with lower respiratory tract disease in the immunocompromised host. SUMMARY The use of nucleic acid hybridization-based assays has expanded our understanding of the spectrum of clinical illness that is associated with rhinovirus infection. The prevalence of rhinovirus infection in children is high and presents a risk for coincidental detection of rhinovirus in the face of other infectious syndromes. The detection of rhinovirus from patients with new or unusual clinical syndromes does not permit the assumption that rhinovirus is playing a causal role in the illness.
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79
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Poutanen SM. Human Coronaviruses. PRINCIPLES AND PRACTICE OF PEDIATRIC INFECTIOUS DISEASE 2008. [PMCID: PMC7310927 DOI: 10.1016/b978-0-7020-3468-8.50228-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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80
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Martinez FJ. Pathogen-directed therapy in acute exacerbations of chronic obstructive pulmonary disease. PROCEEDINGS OF THE AMERICAN THORACIC SOCIETY 2007; 4:647-58. [PMID: 18073397 PMCID: PMC2647652 DOI: 10.1513/pats.200707-097th] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2007] [Accepted: 08/22/2007] [Indexed: 12/15/2022]
Abstract
Acute exacerbations of chronic obstructive pulmonary disease (COPD) are important events in the natural history of this chronic lung disorder. These events can be caused by a large number of infectious and noninfectious agents and are associated with an increased local and systemic inflammatory response. Their frequency and severity have been linked to progressive deterioration in lung function and health status. Infectious pathogens ranging from viral to atypical and typical bacteria have been implicated in the majority of episodes. Most therapeutic regimens to date have emphasized broad, nonspecific approaches to bronchoconstriction and pulmonary inflammation. Increasingly, therapy that targets specific etiologic pathogens has been advocated. These include clinical and laboratory-based methods to identify bacterial infections. Further additional investigation has suggested specific pathogens within this broad class. As specific antiviral therapies become available, better diagnostic approaches to identify specific pathogens will be required. Furthermore, prophylactic therapy for at-risk individuals during high-risk times may become a standard therapeutic approach. As such, the future will likely include aggressive diagnostic algorithms based on the combination of clinical syndromes and rapid laboratory modalities to identify specific causative bacteria or viruses.
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Affiliation(s)
- Fernando J Martinez
- Division of Pulmonary and Critical Care Medicine, University of Michigan Health System, 1500 East Medical Center Drive, SPC 5360, Ann Arbor, MI 48109-5360, USA.
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81
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Desforges M, Miletti TC, Gagnon M, Talbot PJ. Activation of human monocytes after infection by human coronavirus 229E. Virus Res 2007; 130:228-40. [PMID: 17669539 PMCID: PMC7114174 DOI: 10.1016/j.virusres.2007.06.016] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Revised: 06/20/2007] [Accepted: 06/21/2007] [Indexed: 12/15/2022]
Abstract
Human coronaviruses (HCoV) are recognized respiratory pathogens that may be involved in other pathologies such as central nervous system (CNS) diseases. To investigate whether leukocytes could participate in respiratory pathologies and serve as vector for viral spread towards other tissues, the susceptibility of human leukocytic cell lines and peripheral blood mononuclear cells (PBMC) to HCoV-229E and HCoV-OC43 infection was investigated. Human primary monocytes/macrophages were susceptible to HCoV-229E infection, but strongly restricted HCoV-OC43 replication. Moreover, productive HCoV-229E infection of primary monocytes and of the THP-1 monocytic cell line led to their activation, as indicated by the production of pro-inflammatory mediators, including TNF-alpha, CCL5, CXCL10 and CXCL11 and MMP-9. Moreover, an in vitro chemotaxis assay showed that motility towards chemokines of THP-1 cells and primary monocytes was increased following an acute or persistent HCoV-229E infection. Taken together, these results suggest that infected monocytes could serve as a reservoir for HCoV-229E, become activated, participate in the exacerbation of pulmonary pathologies, as well as serve as potential vectors for viral dissemination to host tissues, where it could be associated with other pathologies.
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Affiliation(s)
| | | | | | - Pierre J. Talbot
- Laboratory of Neuroimmunovirology, INRS-Institut Armand-Frappier, 531 boulevard des Prairies, Laval, Québec, Canada H7V 1B7
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82
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Abstract
Advanced age often is associated with functional and immunologic decline and chronic cardiopulmonary diseases that predispose to pneumonia when viral infection occurs. Influenza virus remains the primary viral pathogen in the elderly, although the impact of the other respiratory viruses remains to be defined. The clinical syndromes associated with respiratory viruses frequently are indistinguishable from one another or bacterial pathogens; often, viral illness in older adults exacerbates underlying conditions, complicating diagnosis. Antiviral therapy is available for influenza A and B; specific viral diagnosis, particularly with the use of rapid antigen detection, may be useful for clinical management. Treatment for other viruses primarily is supportive.
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Affiliation(s)
- Ann R Falsey
- Division of Infectious Diseases, Department of Medicine at Rochester General Hospital, 1425 Portland Avenue, Rochester, NY 14621, USA.
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83
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Abstract
Respiratory disorders are the leading cause of death for persons with both acute and chronic spinal cord injury (SCI), and much of the morbidity and mortality associated with respiratory disorders is related to acute respiratory infections. Pneumonia is the best recognized respiratory infection associated with mortality in this population. Recent evidence supports some management strategies that differ from those recommended for the general population. Upper respiratory tract infections and acute bronchitis may be precipitating factors in the development of pneumonia or ventilatory failure in patients with chronic SCI. This review emphasizes management principles for treatment and prevention of respiratory infections in persons with SCI.
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Affiliation(s)
- Stephen P Burns
- Spinal Cord Injury Service (128), VA Puget Sound Health Care System, 1660 S. Columbian Way, Seattle, WA 98108, USA.
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84
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Abstract
It is estimated that viruses play a role in 30% to 80% of asthma exacerbations. Thus, virus vaccination in patients with asthma could play an important role in preventing asthma exacerbations and other complications. Influenza is the only agent for which a routine vaccine is currently available. This article discusses whether influenza vaccination in patients with asthma, based on the available evidence, is justified. Cost-effectiveness of (influenza) vaccination for patients with asthma is questionable. For the other major viruses involved, the present state of affairs is described. Although progress is being made, a vaccine may be available in the near future only for respiratory syncytial virus (RSV). Meanwhile, clinicians and patients should aim for an optimal treatment with the currently available asthma medication.
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Affiliation(s)
- Herman J Bueving
- Erasmus MC-University Medical Center Rotterdam, Department of General Practice, Dr. Molewaterplein 50, 3015 GE Rotterdam, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
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85
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Miller EK, Lu X, Erdman DD, Poehling KA, Zhu Y, Griffin MR, Hartert TV, Anderson LJ, Weinberg GA, Hall CB, Iwane MK, Edwards KM. Rhinovirus-associated hospitalizations in young children. J Infect Dis 2007; 195:773-81. [PMID: 17299706 PMCID: PMC7109786 DOI: 10.1086/511821] [Citation(s) in RCA: 209] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2006] [Accepted: 09/13/2006] [Indexed: 12/19/2022] Open
Abstract
Background. Rhinoviruses frequently cause the common cold but have not been considered important causes of acute respiratory hospitalizations in children. Methods. A population-based surveillance study was performed among children <5 years of age who were hospitalized with respiratory symptoms or fever and who resided within counties encompassing Nashville, Tennessee, or Rochester, New York, from October 2000 through September 2001. Data collected included questionnaires, nasal and throat swabs for viral culture and polymerase chain reaction testing, and chart review. Rates of rhinovirus-associated hospitalizations were calculated. Results. Of 592 children enrolled, 156 (26%) were rhinovirus positive, representing 4.8 (95% confidence interval
[CI], 4.3–5.2) rhinovirus-associated hospitalizations/1000 children. Age-specific rates per 1000 children were 17.6 (95% CI, 14.9–20.6) for 0–5-month-olds, 6.0 (95% CI, 5.0–7.0) for 6–23-month-olds, and 2.0 (95% CI, 1.6, 2.4) for 24–59-month-olds (P<.01) Children with a history of wheezing/asthma had significantly more rhinovirusassociated hospitalizations than those without a history (25.3/1000 children [95% CI, 21.6–29.5/1000 children] vs. 3.1/1000 children [95% CI, 2.7–3.5/1000 children]). Conclusions. Rhinoviruses were associated with nearly 5 hospitalizations/1000 children <5 years of age and were highest in children with a history of wheezing/asthma.
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Affiliation(s)
- E Kathryn Miller
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
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86
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SHAO HONGWEI, LAN DONGMING, DUAN ZHAOHUI, LIU ZEHUAN, MIN JUN, ZHANG LICHUN, HUANG JIAN, SU JING, CHEN SHANGWU, XU ANLONG. Upregulation of mitochondrial gene expression in PBMC from convalescent SARS patients. J Clin Immunol 2006; 26:546-54. [PMID: 17024565 PMCID: PMC7086694 DOI: 10.1007/s10875-006-9046-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2006] [Accepted: 09/08/2006] [Indexed: 01/22/2023]
Abstract
The observations that Lymphopenia is common in severe acute respiratory syndrome (SARS) patients and that peripheral blood mononuclear cell (PBMC) could be infected by SARS-CoV indicate that PBMC could be useful in identifying the gene expression profile in convalescent patients and tracing the host response to SARS-CoV infection. In this study, the altered genes expressions in the PBMC of convalescent SARS patients were investigated with suppression subtractive hybridization (SSH). We found that genes encoded by mitochondrial DNA (mtDNA) were obviously upregulated, while mitochondria were now found to be closely connected with antiviral immunity. The identification of a viral gene, M, in SSH cDNA library shows the long-term existence of SARS-CoV in vivo. In addition, some oxidative stress sensitive genes, heat shock proteins, transcription factors, and cytokines showed remarkable elevation. Thin-section electron microscope shows increased lysosome-like granule and mitochondria in PBMC of patients. These results provide important intracellular clue for tracing host response to SARS-CoV infection and suggest a role of mitochondria in that process.
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Affiliation(s)
- HONGWEI SHAO
- State Key Laboratory of Biocontrol, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 510275 Guangzhou, P. R. China
| | - DONGMING LAN
- State Key Laboratory of Biocontrol, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 510275 Guangzhou, P. R. China
| | - ZHAOHUI DUAN
- The Second Affiliated Hospital, Sun Yat-sen (Zhongshan) University, 510120 Guangzhou, P. R. China
| | - ZEHUAN LIU
- State Key Laboratory of Biocontrol, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 510275 Guangzhou, P. R. China
| | - JUN MIN
- The Second Affiliated Hospital, Sun Yat-sen (Zhongshan) University, 510120 Guangzhou, P. R. China
| | - LICHUN ZHANG
- State Key Laboratory of Biocontrol, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 510275 Guangzhou, P. R. China
| | - JIAN HUANG
- The Second Affiliated Hospital, Sun Yat-sen (Zhongshan) University, 510120 Guangzhou, P. R. China
| | - JING SU
- State Key Laboratory of Biocontrol, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 510275 Guangzhou, P. R. China
| | - SHANGWU CHEN
- State Key Laboratory of Biocontrol, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 510275 Guangzhou, P. R. China
| | - ANLONG XU
- State Key Laboratory of Biocontrol, Department of Biochemistry, College of Life Sciences, Sun Yat-sen (Zhongshan) University, 510275 Guangzhou, P. R. China
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87
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Abstract
Human Bocavirus was detected in 18 (1.5%) of 1,209 respiratory specimens collected in 2003 and 2004 in Canada. The main symptoms of affected patients were cough (78%), fever (67%), and sore throat (44%). Nine patients were hospitalized; of these, 8 (89%) were <5 years of age.
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Affiliation(s)
- Nathalie Bastien
- National Science Center for Human and Animal Health, Winnipeg, Manitoba, Canada
| | - Ken Brandt
- Saskatchewan Health, Regina, Saskatchewan, Canada
| | - Kerry Dust
- National Science Center for Human and Animal Health, Winnipeg, Manitoba, Canada
| | - Diane Ward
- National Science Center for Human and Animal Health, Winnipeg, Manitoba, Canada
| | - Yan Li
- National Science Center for Human and Animal Health, Winnipeg, Manitoba, Canada
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88
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Gerna G, Campanini G, Rovida F, Percivalle E, Sarasini A, Marchi A, Baldanti F. Genetic variability of human coronavirus OC43-, 229E-, and NL63-like strains and their association with lower respiratory tract infections of hospitalized infants and immunocompromised patients. J Med Virol 2006; 78:938-49. [PMID: 16721849 PMCID: PMC7167039 DOI: 10.1002/jmv.20645] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In the winter-spring seasons 2003-2004 and 2004-2005, 47 (5.7%) patients with acute respiratory infection associated with human coronavirus (hCoV) 229E-, NL63-, and OC43-like strains were identified among 823 (597 immunocompetent and 226 immunocompromised) patients admitted to hospital with acute respiratory syndromes. Viral infections were diagnosed by either immunological (monoclonal antibodies) or molecular (RT-PCR) methods. Each of two sets of primer pairs developed for detection of all CoVs (panCoV) failed to detect 15 of the 53 (28.3%) hCoV strains identified. On the other hand, all hCoV strains could be detected by using type-specific primers targeting genes 1ab and N. The HuH-7 cell line was found to be susceptible to isolation and identification of OC43- and 229E-like strains. Overall, hCoV infection was caused by OC43-like, 229E-like, and NL63-like strains in 25 (53.2%), 10 (21.3%), and 9 (19.1%) patients, respectively. In addition, three patients (6.4%) were infected by untypeable hCoV strains. NL63-like strains were not found to circulate in 2003-2004, and 229E-like strains did not circulate in 2004-2005, while OC43-like strains were detected in both seasons. The monthly distribution reached a peak during January through March. Lower predominated over upper respiratory tract infections in each age group. In addition, hCoV infections interested only immunocompetent infants and young children during the first year of life, while all adults were immunocompromised patients. Coinfections of hCoVs and other respiratory viruses (mostly interesting the first year of life) were observed in 14 of the 47 (29.8%) patients and were associated with severe respiratory syndromes more frequently than hCoV single infections (P = 0.002). In conclusion, the use of multiple primer sets targeting different genes is recommended for diagnosis of all types of hCoV infection. In addition, the detection of still untypeable hCoV strains suggests that the number of hCoVs involved in human pathology might further increase. Finally, hCoVs should be screened routinely for in both infants and immunocompromised patients with acute respiratory infection.
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MESH Headings
- Acute Disease
- Adolescent
- Adult
- Antigens, Viral/analysis
- Base Sequence
- Child
- Child, Preschool
- Coronavirus/classification
- Coronavirus/genetics
- Coronavirus/immunology
- Coronavirus/isolation & purification
- Coronavirus 229E, Human/genetics
- Coronavirus 229E, Human/immunology
- Coronavirus 229E, Human/isolation & purification
- Coronavirus Infections/diagnosis
- Coronavirus Infections/epidemiology
- Coronavirus Infections/immunology
- Coronavirus Infections/virology
- Coronavirus OC43, Human/genetics
- Coronavirus OC43, Human/immunology
- Coronavirus OC43, Human/isolation & purification
- DNA, Viral/genetics
- Fluorescent Antibody Technique, Direct
- Genetic Variation
- Humans
- Immunocompetence
- Immunocompromised Host
- Infant
- Italy/epidemiology
- Phylogeny
- Respiratory Tract Infections/diagnosis
- Respiratory Tract Infections/epidemiology
- Respiratory Tract Infections/immunology
- Respiratory Tract Infections/virology
- Reverse Transcriptase Polymerase Chain Reaction
- Species Specificity
- Virulence
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Affiliation(s)
- Giuseppe Gerna
- Servizio di Virologia, IRCCS Policlinico San Matteo, and Dipartimento di Pediatria, Università di Pavia, Pavia, Italy.
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89
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Venarske DL, Busse WW, Griffin MR, Gebretsadik T, Shintani AK, Minton PA, Peebles RS, Hamilton R, Weisshaar E, Vrtis R, Higgins SB, Hartert TV. The relationship of rhinovirus-associated asthma hospitalizations with inhaled corticosteroids and smoking. J Infect Dis 2006; 193:1536-43. [PMID: 16652282 PMCID: PMC7109695 DOI: 10.1086/503809] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Accepted: 01/18/2006] [Indexed: 11/16/2022] Open
Abstract
BackgroundAlthough rhinovirus (RV) respiratory infections trigger asthma exacerbations, the etiologic association between this virus and severe exacerbations, as well as the clinical characteristics of adults at risk for RV-associated asthma that necessitates hospitalization, have not been established MethodsDuring 1999–2003, we conducted a cohort study of 101 adults prospectively enrolled at hospital admission for an asthma exacerbation. Patient characteristics and frequencies of RV in nasal specimens were analyzed, by reverse-transcription polymerase chain reaction (RT-PCR), at asthma-related hospital admission and at a 3-month convalescent follow-up visit ResultsRV was detected by RT-PCR in 21% of hospitalized patients over a 4-year period and in 1.3% of patients who returned for a 3-month follow-up visit. RV detection was strongly associated with hospitalization for asthma (adjusted odds ratio [OR], 15.1 [95% confidence interval {CI}, 1.88–121.4]). After adjustment for baseline asthma severity, RV-positive patients were more likely than RV-negative patients to be current smokers and nonusers of inhaled corticosteroids (ICSs) (adjusted OR, 11.18 [95% CI, 2.37–52.81]; P=.002) ConclusionsRV respiratory infection is an etiologic agent in severe asthma exacerbations necessitating hospitalization in adults. Compared with hospitalized patients with asthma who were RV negative, RV-positive patients were significantly more likely to be smokers and nonusers of ICSs
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Affiliation(s)
- Daniel L. Venarske
- Medicine
- Division of Allergy, Pulmonary, and Critical Care Medicine
- Reprints or correspondence: Dr. Tina V. Hartert, Center for Lung Research, Center for Health Services Research, Div. of Allergy, Pulmonary, and Critical Care Medicine, 6107 MCE, Vanderbilt University School of Medicine, Nashville, TN 37232-8300 ()
| | - William W. Busse
- Section of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin, Madison
| | - Marie R. Griffin
- Medicine
- Preventive Medicine, and
- Center for Health Services Research, and
- Center for Education and Research on Therapeutics, Vanderbilt University School of Medicine, and
- Mid-South Geriatric Research Education and Clinical Center, Quality Scholars Program, VA Tennessee Valley Health Care System, Nashville
| | | | | | | | | | - Robert Hamilton
- Division of Clinical Immunology, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Elizabeth Weisshaar
- Section of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin, Madison
| | - Rose Vrtis
- Section of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin, Madison
| | | | - Tina V. Hartert
- Medicine
- Division of Allergy, Pulmonary, and Critical Care Medicine
- Center for Health Services Research, and
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90
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Abstract
Given the potential for laboratory-associated severe acute respiratory syndrome-associated coronavirus (SARS-CoV) infections, we must know which cell lines are susceptible to the virus. We investigated 21 cell lines routinely used for virus isolation or research. After infection with SARS-CoV, cells were observed for cytopathic effects, and quantitative real-time polymerase chain reaction was used to measure ongoing viral replication. An indirect immunofluorescence assay was also used as a confirmatory test. The study identified 10 new cell lines capable of supporting the replication of SARS-CoV and confirmed the susceptibility of 4 cell lines previously reported. This study shows that SARS-CoV can be isolated in several cell lines commonly used for diagnostic or research purposes. It also shows that SARS-CoV can achieve high titers in several cell lines, sometimes in the absence of specific cytopathic effects.
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Affiliation(s)
- Matthew Kaye
- Victorian Infectious Diseases Reference Laboratory, North Melbourne, Victoria, Australia.
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91
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Falsey AR, Walsh EE. Viral pneumonia in older adults. Clin Infect Dis 2006; 42:518-24. [PMID: 16421796 PMCID: PMC7107847 DOI: 10.1086/499955] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2005] [Accepted: 10/19/2005] [Indexed: 11/16/2022] Open
Abstract
Viruses account for a substantial portion of respiratory illnesses, including pneumonia, in the elderly population. Presently, influenza virus A H3N2 and respiratory syncytial virus are the most commonly identified viral pathogens in older adults with viral pneumonia. As diagnostic tests such as reverse-transcription polymerase chain reaction become more widely used, the relative importance of additional viruses (such as parainfluenza, rhinoviruses, coronaviruses, and human metapneumovirus) will likely increase. Influenza virus should be considered as a cause of pneumonia during the winter months, especially during periods of peak activity. Patients with high-grade fever, myalgias, and cough should arouse the highest suspicion. Respiratory syncytial virus pneumonia should also be suspected during the winter in patients with coryza, wheezing, low-grade fever, and patchy infiltrates, especially if negative for influenza on rapid testing. Because clinical features and periods of activity for many viruses overlap, laboratory confirmation of influenza is recommended for cases involving seriously ill or institutionalized patients.
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Affiliation(s)
- Ann R Falsey
- Department of Medicine, Rochester General Hospital, Rochester, NY 14621, USA.
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92
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Vijgen L, Keyaerts E, Moës E, Maes P, Duson G, Van Ranst M. Development of one-step, real-time, quantitative reverse transcriptase PCR assays for absolute quantitation of human coronaviruses OC43 and 229E. J Clin Microbiol 2005; 43:5452-6. [PMID: 16272469 PMCID: PMC1287813 DOI: 10.1128/jcm.43.11.5452-5456.2005] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The clinical significance of human coronaviruses in more severe respiratory illnesses has recently been shown to be higher than was previously assumed. Rapid and reliable diagnosis of human coronavirus infections therefore becomes indispensable in a routine clinical setting. In this study, we present a very sensitive and specific TaqMan-based, real-time quantitative reverse transcriptase PCR (qRT-PCR) for the rapid detection and quantitation of human coronaviruses (HCoVs) OC43 and 229E. Absolute viral load measurement in clinical samples was achieved through the construction of in-house HCoV OC43 and 229E cRNA standards for the generation of a standard curve. The HCoV OC43 assay allows quantitation over a range from 20 to 2 x 10(8) RNA copies per reaction mixture (5 microl RNA extract). When this is extrapolated to clinical samples, this corresponds to a detection range of 10(3) to 10(10) viral genome equivalents per ml. By using the HCoV 229E qRT-PCR assay, viral RNA copies ranging from 200 to 2 x 10(9) per reaction mixture can be detected, which corresponds to 10(4) to 10(11) viral genome equivalents per ml sample. A total of 100 respiratory samples screened for the presence of HCoVs OC43 and 229E by using conventional RT-PCR were assessed in parallel by the qRT-PCR assays. By use of the real-time qRT-PCR techniques, the detection rate of HCoVs OC43 and 229E increased from 2.0% to 3.1% and from 0.3% to 2.5%, respectively. The real-time qRT-PCR assays described here allow the rapid, specific, and sensitive laboratory detection and quantitation of human coronaviruses OC43 and 229E.
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Affiliation(s)
- Leen Vijgen
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
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93
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Chen S, Lu D, Zhang M, Che J, Yin Z, Zhang S, Zhang W, Bo X, Ding Y, Wang S. Double-antigen sandwich ELISA for detection of antibodies to SARS-associated coronavirus in human serum. Eur J Clin Microbiol Infect Dis 2005; 24:549-53. [PMID: 16133409 PMCID: PMC7088218 DOI: 10.1007/s10096-005-1378-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The study presented here was conducted to evaluate the performance of a double-antigen sandwich ELISA to detect antibodies in human serum against the coronavirus associated with severe acute respiratory syndrome (SARS). A recombinant partial nucleocapsid protein of SARS-associated coronavirus was used as a serodiagnostic antigen in the ELISA. A total of 2892 clinical serum samples were tested with the ELISA kit, which positively identified 25 of 35 (71.4%) samples of patients with confirmed SARS infection, 286 of 407 (70%) samples of patients suspected of having SARS, 229 of 302 (75.8%) samples of convalescent SARS patients, and 0 of 544 samples obtained from healthcare workers; only 1 of 1604 clinical samples obtained from patients with other diseases demonstrated a weakly positive result. These results indicate that the double-antigen sandwich ELISA is an effective screening method for the serodiagnosis of SARS-associated coronavirus.
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Affiliation(s)
- S. Chen
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
| | - D. Lu
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
| | - M. Zhang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
| | - J. Che
- Glodenweikai Medical Biotechnology Co, Ltd, Beijing, 100850 People’s Republic of China
| | - Z. Yin
- Glodenweikai Medical Biotechnology Co, Ltd, Beijing, 100850 People’s Republic of China
| | - S. Zhang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
| | - W. Zhang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
| | - X. Bo
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
| | - Y. Ding
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
| | - S. Wang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850 People’s Republic of China
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94
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Vijgen L, Keyaerts E, Moës E, Maes P, Duson G, Van Ranst M. Development of one-step, real-time, quantitative reverse transcriptase PCR assays for absolute quantitation of human coronaviruses OC43 and 229E. J Clin Microbiol 2005. [PMID: 16272469 DOI: 10.1128/jcm.43.11.5452-5456.2005pmid-16272469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023] Open
Abstract
The clinical significance of human coronaviruses in more severe respiratory illnesses has recently been shown to be higher than was previously assumed. Rapid and reliable diagnosis of human coronavirus infections therefore becomes indispensable in a routine clinical setting. In this study, we present a very sensitive and specific TaqMan-based, real-time quantitative reverse transcriptase PCR (qRT-PCR) for the rapid detection and quantitation of human coronaviruses (HCoVs) OC43 and 229E. Absolute viral load measurement in clinical samples was achieved through the construction of in-house HCoV OC43 and 229E cRNA standards for the generation of a standard curve. The HCoV OC43 assay allows quantitation over a range from 20 to 2 x 10(8) RNA copies per reaction mixture (5 microl RNA extract). When this is extrapolated to clinical samples, this corresponds to a detection range of 10(3) to 10(10) viral genome equivalents per ml. By using the HCoV 229E qRT-PCR assay, viral RNA copies ranging from 200 to 2 x 10(9) per reaction mixture can be detected, which corresponds to 10(4) to 10(11) viral genome equivalents per ml sample. A total of 100 respiratory samples screened for the presence of HCoVs OC43 and 229E by using conventional RT-PCR were assessed in parallel by the qRT-PCR assays. By use of the real-time qRT-PCR techniques, the detection rate of HCoVs OC43 and 229E increased from 2.0% to 3.1% and from 0.3% to 2.5%, respectively. The real-time qRT-PCR assays described here allow the rapid, specific, and sensitive laboratory detection and quantitation of human coronaviruses OC43 and 229E.
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Affiliation(s)
- Leen Vijgen
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, University of Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
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95
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Tripp RA, Haynes LM, Moore D, Anderson B, Tamin A, Harcourt BH, Jones LP, Yilla M, Babcock GJ, Greenough T, Ambrosino DM, Alvarez R, Callaway J, Cavitt S, Kamrud K, Alterson H, Smith J, Harcourt JL, Miao C, Razdan R, Comer JA, Rollin PE, Ksiazek TG, Sanchez A, Rota PA, Bellini WJ, Anderson LJ. Monoclonal antibodies to SARS-associated coronavirus (SARS-CoV): identification of neutralizing and antibodies reactive to S, N, M and E viral proteins. J Virol Methods 2005; 128:21-8. [PMID: 15885812 PMCID: PMC7112802 DOI: 10.1016/j.jviromet.2005.03.021] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2004] [Revised: 03/23/2005] [Accepted: 03/23/2005] [Indexed: 11/26/2022]
Abstract
Monoclonal antibodies (Mabs) against the Urbani strain of the SARS-associated coronavirus (SARS-CoV) were developed and characterized for reactivity to SARS-CoV and SARS-CoV S, N, M, and E proteins using enzyme-linked immunoabsorbent (ELISA), radioimmunoprecipitation, immunofluorescence, Western Blot and microneutralization assays. Twenty-six mAbs were reactive to SARS-CoV by ELISA, and nine were chosen for detailed characterization. Five mAbs reacted against the S protein, two against the M protein, and one each against the N and E proteins. Two of five S protein mAbs neutralized SARS-CoV infection of Vero E6 cells and reacted to an epitope within amino acids 490–510 in the S protein. While two of the three non-neutralizing antibodies recognized at second epitope within amino acids 270–350. The mAbs characterized should prove useful for developing SARS-CoV diagnostic assays and for studying the biology of infection and pathogenesis of disease.
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Affiliation(s)
- Ralph A. Tripp
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Lia M. Haynes
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
- Corresponding author. Tel.: +1 404 639 4004; fax: +1 404 639 1307.
| | - Deborah Moore
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Barbara Anderson
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Azaibi Tamin
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Brian H. Harcourt
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Les P. Jones
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Mamadi Yilla
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Gregory J. Babcock
- Massachusetts Biologic Laboratories, University of Massachusetts Medical School, Jamaica Plain, MA 02130, USA
| | - Thomas Greenough
- Massachusetts Biologic Laboratories, University of Massachusetts Medical School, Jamaica Plain, MA 02130, USA
| | - Donna M. Ambrosino
- Massachusetts Biologic Laboratories, University of Massachusetts Medical School, Jamaica Plain, MA 02130, USA
| | - Rene Alvarez
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | | | | | - Kurt Kamrud
- AlphaVax Inc., Research Triangle Park, NC 27709, USA
| | | | | | - Jennifer L. Harcourt
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Congrong Miao
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Raj Razdan
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - James A. Comer
- National Center for Infectious Diseases, Division of Viral and Rickettsial Diseases, Special Pathogens Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Pierre E. Rollin
- National Center for Infectious Diseases, Division of Viral and Rickettsial Diseases, Special Pathogens Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Thomas G. Ksiazek
- National Center for Infectious Diseases, Division of Viral and Rickettsial Diseases, Special Pathogens Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Anthony Sanchez
- National Center for Infectious Diseases, Division of Viral and Rickettsial Diseases, Special Pathogens Branch, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Paul A. Rota
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - William J. Bellini
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
| | - Larry J. Anderson
- National Centers for Infectious Diseases, Division of Viral and Rickettsial Diseases, Respiratory and Enteric Virus Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Mailstop G-09, Atlanta, GA 30333, USA
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96
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Atmar RL. Editorial Commentary: Uncommon(ly Considered) Manifestations of Infection with Rhinovirus, Agent of the Common Cold. Clin Infect Dis 2005; 41:266-7. [PMID: 15983927 DOI: 10.1086/430927] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2005] [Accepted: 03/25/2005] [Indexed: 11/03/2022] Open
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97
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Tang BSF, Chan KH, Cheng VCC, Woo PCY, Lau SKP, Lam CCK, Chan TL, Wu AKL, Hung IFN, Leung SY, Yuen KY. Comparative host gene transcription by microarray analysis early after infection of the Huh7 cell line by severe acute respiratory syndrome coronavirus and human coronavirus 229E. J Virol 2005; 79:6180-93. [PMID: 15858003 PMCID: PMC1091719 DOI: 10.1128/jvi.79.10.6180-6193.2005] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The pathogenesis of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) at the cellular level is unclear. No human cell line was previously known to be susceptible to both SARS-CoV and other human coronaviruses. Huh7 cells were found to be susceptible to both SARS-CoV, associated with SARS, and human coronavirus 229E (HCoV-229E), usually associated with the common cold. Highly lytic and productive rates of infections within 48 h of inoculation were reproducible with both viruses. The early transcriptional profiles of host cell response to both types of infection at 2 and 4 h postinoculation were determined by using the Affymetrix HG-U133A microarray (about 22,000 genes). Much more perturbation of cellular gene transcription was observed after infection by SARS-CoV than after infection by HCoV-229E. Besides the upregulation of genes associated with apoptosis, which was exactly opposite to the previously reported effect of SARS-CoV in a colonic carcinoma cell line, genes related to inflammation, stress response, and procoagulation were also upregulated. These findings were confirmed by semiquantitative reverse transcription-PCR, reverse transcription-quantitative PCR for mRNA of genes, and immunoassays for some encoded proteins. These transcriptomal changes are compatible with the histological changes of pulmonary vasculitis and microvascular thrombosis in addition to the diffuse alveolar damage involving the pneumocytes.
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Affiliation(s)
- Bone S F Tang
- Department of Microbiology, State Key Laboratory of Emerging Infectious Diseases, Center of Infection and Immunology, Queen Mary Hospital, The University of Hong Kong, Hong Kong Special Administrative Region, China
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98
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van Kraaij MGJ, van Elden LJR, van Loon AM, Hendriksen KAW, Laterveer L, Dekker AW, Nijhuis M. Frequent detection of respiratory viruses in adult recipients of stem cell transplants with the use of real-time polymerase chain reaction, compared with viral culture. Clin Infect Dis 2005; 40:662-9. [PMID: 15714410 PMCID: PMC7107843 DOI: 10.1086/427801] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2004] [Accepted: 10/14/2004] [Indexed: 11/17/2022] Open
Abstract
Background. Respiratory virus infections have been recognized as important causes of severe pneumonia in patients who have undergone stem cell transplantation (SCT). Reported incidences of respiratory virus infection in adult SCT recipients vary in the literature from 3.5% to 36% when determined by viral culture. However, a more sensitive method to assess the presence of respiratory viruses in the lower airways may be important for delineation of the true incidence of respiratory virus—associated pneumonia and may be essential for guidance on implementation of antiviral therapy and prevention or limitation of nosocomial spread of infection with respiratory viruses. Methods. To determine the incidence and severity of respiratory tract illness (RTI) and to assess the diagnostic value of real-time reverse-transcriptase polymerase chain reaction (RT-PCR) versus viral culture, 72 SCT recipients were monitored during a 6-month period. Results. A respiratory virus was detected in 21% of episodes of RTI by viral culture and in 63% of RTI episodes by real-time RT-PCR (P < .0001). In lower respiratory tract illness, real-time RT-PCR was much more sensitive than viral culture for detection of respiratory virus (73% vs. 9%; P = .008). The mortality rate for patients with respiratory virus—associated lower respiratory tract illness (25%) was similar to rates reported elsewhere. Respiratory viruses (predominantly rhinovirus) were detected by real-time RT-PCR in 9% of samples obtained from symptom-free SCT recipients at predetermined times by real-time RT-PCR and by viral culture in 1% (P < .0001), indicating that asymptomatic shedding of respiratory viruses also occurs. Conclusion. We conclude that, although asymptomatic shedding of respiratory virus occurs, respiratory viruses are frequent causes of RTI in SCT recipients.
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Affiliation(s)
| | - Leontine J. R. van Elden
- Departments of Virology, Eijkman-Winkler Institute for Microbiology, Infectious Diseases and Inflammation, University Medical Center Utrecht, The Netherlands
| | - Anton M. van Loon
- Departments of Virology, Eijkman-Winkler Institute for Microbiology, Infectious Diseases and Inflammation, University Medical Center Utrecht, The Netherlands
| | - Karin A. W. Hendriksen
- Departments of Virology, Eijkman-Winkler Institute for Microbiology, Infectious Diseases and Inflammation, University Medical Center Utrecht, The Netherlands
| | - Laurens Laterveer
- Departments of Hematology and University Medical Center Utrecht, The Netherlands
| | - Adriaan W. Dekker
- Departments of Hematology and University Medical Center Utrecht, The Netherlands
| | - Monique Nijhuis
- Departments of Virology, Eijkman-Winkler Institute for Microbiology, Infectious Diseases and Inflammation, University Medical Center Utrecht, The Netherlands
- Reprints or correspondence: Monique Nijhuis, Eijkman-Winkler Institute for Microbiology, Infectious Diseases and Inflammation, Dept. of Virology G04.614, University Medical Center Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands ()
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99
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Rovida F, Percivalle E, Zavattoni M, Torsellini M, Sarasini A, Campanini G, Paolucci S, Baldanti F, Revello MG, Gerna G. Monoclonal antibodies versus reverse transcription-PCR for detection of respiratory viruses in a patient population with respiratory tract infections admitted to hospital. J Med Virol 2005; 75:336-47. [PMID: 15602736 PMCID: PMC7166428 DOI: 10.1002/jmv.20276] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In the winter season 2001–2002, 239 nasopharyngeal aspirate and 15 bronchoalveolar lavage samples from 208 patients (135 pediatric and 73 adults, including 19 lung transplant recipients) admitted to hospital because of an acute respiratory tract infection were examined for rapid diagnosis of respiratory viruses by two diagnostic approaches: immunological, using specific monoclonal antibodies (MAb); and molecular, using specific reverse transcription (RT)‐PCR assays. Both methods detected influenza viruses A (H1N1 and H3N2) and B, human parainfluenza virus types 1 to 3, human respiratory syncytial virus (hRSV) types A and B, and human adenoviruses. In addition, human coronavirus (hCoV) groups I (229E‐like) and II (OC43‐like), as well as the new human metapneumovirus (hMPV), types A and B, were searched for by RT‐PCR alone. When results obtained by both methods were added, the overall percentage of patients positive for at least one respiratory virus peaked at 44.2%, involving 92/208 patients (81 pediatric, and 11 adults), while 116 patients (55.8%) were negative for any respiratory virus tested. The most common circulating virus was hRSV, infecting 54 (25.9%) patients (24 type A, and 30 type B strains), followed by hMPV, infecting 12 (5.8%) patients (7 type A and 5 type B strains). Coinfections by two respiratory viruses interested 11 (5.3%) patients, and 9 (81.8%) of these were infected by hRSV in association with another respiratory virus. In the great majority of infected children, hRSV and hMPV were associated with lower respiratory tract infections. In lung transplant recipients, viruses present in bronchoalveolar lavage appeared to be associated frequently with lower respiratory tract infections. In conclusion: the combination of immunological and molecular assays is the most sensitive approach to the diagnosis of respiratory viral infections; and infections caused by the less investigated hCoVs and hMPVs represent a fair proportion of respiratory infections. J. Med. Virol. 75:336–347, 2005. © 2004 Wiley‐Liss, Inc.
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Affiliation(s)
- Francesca Rovida
- Servizio di Virologia, IRCCS Policlinico San Matteo, Pavia, Italy
| | - Elena Percivalle
- Servizio di Virologia, IRCCS Policlinico San Matteo, Pavia, Italy
| | | | - Maria Torsellini
- Servizio di Virologia, IRCCS Policlinico San Matteo, Pavia, Italy
| | | | - Giulia Campanini
- Servizio di Virologia, IRCCS Policlinico San Matteo, Pavia, Italy
| | | | - Fausto Baldanti
- Servizio di Virologia, IRCCS Policlinico San Matteo, Pavia, Italy
| | | | - Giuseppe Gerna
- Servizio di Virologia, IRCCS Policlinico San Matteo, Pavia, Italy
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100
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Bastien N, Anderson K, Hart L, Caeseele PV, Brandt K, Milley D, Hatchette T, Weiss EC, Li Y. Human coronavirus NL63 infection in Canada. J Infect Dis 2005; 191:503-6. [PMID: 15655772 PMCID: PMC7199484 DOI: 10.1086/426869] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2004] [Accepted: 08/09/2004] [Indexed: 11/03/2022] Open
Abstract
The isolation of human coronavirus NL63 (HCoV-NL63) in The Netherlands raised questions about its contribution to respiratory illness. In this study, a total of 525 respiratory specimens, collected in Canada primarily during the winter months of 2001-2002, were tested for HCoV-NL63; 19 tested positive for HCoV-NL63, demonstrating virus activity during January-March 2002. Patients with HCoV-NL63 were 1 month-100 years old (median age, 37 years). The main clinical presentations were fever (15/19), sore throat (5/19), and cough (9/19), and 4 patients were hospitalized. These results provide evidence for the worldwide distribution of HCoV-NL63.
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Affiliation(s)
- Nathalie Bastien
- National Microbiology Laboratory, Canadian Science Center for Human and Animal Health, Winnipeg
| | - Kelly Anderson
- National Microbiology Laboratory, Canadian Science Center for Human and Animal Health, Winnipeg
| | - Laura Hart
- National Microbiology Laboratory, Canadian Science Center for Human and Animal Health, Winnipeg
| | | | - Ken Brandt
- Provincial Laboratory, Saskatchewan Health, Regina, Saskatchewan
| | | | - Todd Hatchette
- Queen Elizabeth II Health Science Center, Halifax, Nova Scotia
| | | | - Yan Li
- National Microbiology Laboratory, Canadian Science Center for Human and Animal Health, Winnipeg
- Reprints or correspondence: Dr. Yan Li, National Microbiology Laboratory, Canadian Science Center for Human and Animal Health, 1015 Arlington St., Winnipeg, Manitoba R3E 3R2, Canada ()
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