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Starbæk SMR, Andersen MR, Brogaard L, Spinelli A, Rapson V, Glud HA, Larsen LE, Heegaard PMH, Nauwynck H, Skovgaard K. Innate antiviral responses in porcine nasal mucosal explants inoculated with influenza A virus are comparable with responses in respiratory tissues after viral infection. Immunobiology 2022; 227:152192. [PMID: 35255458 PMCID: PMC8863374 DOI: 10.1016/j.imbio.2022.152192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 02/15/2022] [Accepted: 02/19/2022] [Indexed: 11/30/2022]
Abstract
Nasal mucosal explant (NEs) cultured at an air–liquid interface mimics in vivo conditions more accurately than monolayer cultures of respiratory cell lines or primary cells cultured in flat-bottom microtiter wells. NEs might be relevant for studies of host-pathogen interactions and antiviral immune responses after infection with respiratory viruses, including influenza and corona viruses. Pigs are natural hosts for swine influenza A virus (IAV) but are also susceptible to IAV from humans, emphasizing the relevance of porcine NEs in the study of IAV infection. Therefore, we performed fundamental characterization and study of innate antiviral responses in porcine NEs using microfluidic high-throughput quantitative real-time PCR (qPCR) to generate expression profiles of host genes involved in inflammation, apoptosis, and antiviral immune responses in mock inoculated and IAV infected porcine NEs. Handling and culturing of the explants ex vivo had a significant impact on gene expression compared to freshly harvested tissue. Upregulation (2–43 fold) of genes involved in inflammation, including IL1A and IL6, and apoptosis, including FAS and CASP3, and downregulation of genes involved in viral recognition (MDA5 (IFIH1)), interferon response (IFNA), and response to virus (OAS1, IFIT1, MX1) was observed. However, by comparing time-matched mock and virus infected NEs, transcription of viral pattern recognition receptors (RIG-I (DDX58), MDA5 (IFIH1), TLR3) and type I and III interferons (IFNB1, IL28B (IFNL3)) were upregulated 2–16 fold in IAV-infected NEs. Furthermore, several interferon-stimulated genes including MX1, MX2, OAS, OASL, CXCL10, and ISG15 was observed to increase 2–26 fold in response to IAV inoculation. NE expression levels of key genes involved in antiviral responses including IL28B (IFNL3), CXCL10, and OASL was highly comparable to expression levels found in respiratory tissues including nasal mucosa and lung after infection of pigs with the same influenza virus isolate.
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Affiliation(s)
- Sofie M R Starbæk
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Malene Rask Andersen
- National Veterinary Institute, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Louise Brogaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Anna Spinelli
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Victoria Rapson
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Helena Aagaard Glud
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Lars E Larsen
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Peter M H Heegaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark; Department of Health Technology, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Hans Nauwynck
- Faculty of Veterinary Medicine, Ghent University, Belgium
| | - Kerstin Skovgaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark.
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Basharat U, Aiche MM, Kim MM, Sohal M, Chang EH. Are rhinoviruses implicated in the pathogenesis of sinusitis and chronic rhinosinusitis exacerbations? A comprehensive review. Int Forum Allergy Rhinol 2019; 9:1159-1188. [DOI: 10.1002/alr.22403] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/16/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Usmaan Basharat
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Arizona College of Medicine Tucson AZ
| | - Mazen M. Aiche
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Arizona College of Medicine Tucson AZ
| | - Marianne M. Kim
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Arizona College of Medicine Tucson AZ
| | - Maheep Sohal
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Arizona College of Medicine Tucson AZ
| | - Eugene H. Chang
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Arizona College of Medicine Tucson AZ
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Grützmacher K, Keil V, Leinert V, Leguillon F, Henlin A, Couacy-Hymann E, Köndgen S, Lang A, Deschner T, Wittig RM, Leendertz FH. Human quarantine: Toward reducing infectious pressure on chimpanzees at the Taï Chimpanzee Project, Côte d'Ivoire. Am J Primatol 2017; 80. [PMID: 28095600 PMCID: PMC7161855 DOI: 10.1002/ajp.22619] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 10/13/2016] [Accepted: 10/19/2016] [Indexed: 12/02/2022]
Abstract
Due to their genetic relatedness, great apes are highly susceptible to common human respiratory pathogens. Although most respiratory pathogens, such as human respiratory syncytial virus (HRSV) and human metapneumovirus (HMPV), rarely cause severe disease in healthy human adults, they are associated with considerable morbidity and mortality in wild great apes habituated to humans for research or tourism. To prevent pathogen transmission, most great ape projects have established a set of hygiene measures ranging from keeping a specific distance, to the use of surgical masks and establishment of quarantines. This study investigates the incidence of respiratory symptoms and human respiratory viruses in humans at a human‐great ape interface, the Taï Chimpanzee Project (TCP) in Côte d'Ivoire, and consequently, the effectiveness of a 5‐day quarantine designed to reduce the risk of potential exposure to human respiratory pathogens. To assess the impact of quarantine as a preventative measure, we monitored the quarantine process and tested 262 throat swabs for respiratory viruses, collected during quarantine over a period of 1 year. Although only 1 subject tested positive for a respiratory virus (HRSV), 17 subjects developed symptoms of infection while in quarantine and were subsequently kept from approaching the chimpanzees, preventing potential exposure in 18 cases. Our results suggest that quarantine—in combination with monitoring for symptoms—is effective in reducing the risk of potential pathogen exposure. This research contributes to our understanding of how endangered great apes can be protected from human‐borne infectious disease.
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Affiliation(s)
- Kim Grützmacher
- Project Group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Berlin, Germany.,Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Verena Keil
- Project Group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Berlin, Germany
| | - Vera Leinert
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Floraine Leguillon
- Project Group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Berlin, Germany.,University Montpellier 2, Montpellier, France
| | - Arthur Henlin
- Project Group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Berlin, Germany.,University Montpellier 2, Montpellier, France
| | - Emmanuel Couacy-Hymann
- Laboratoire National d'appui au Développement Agricole/Laboratoire Central de Pathologie Animale, Bingerville, Côte d'Ivoire
| | - Sophie Köndgen
- Project Group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Berlin, Germany
| | - Alexander Lang
- Project Group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Berlin, Germany
| | - Tobias Deschner
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Roman M Wittig
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.,Taï Chimpanzee Project, CSRS, Abidjan, Côte d'Ivoire
| | - Fabian H Leendertz
- Project Group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Berlin, Germany
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Grützmacher KS, Köndgen S, Keil V, Todd A, Feistner A, Herbinger I, Petrzelkova K, Fuh T, Leendertz SA, Calvignac-Spencer S, Leendertz FH. Codetection of Respiratory Syncytial Virus in Habituated Wild Western Lowland Gorillas and Humans During a Respiratory Disease Outbreak. ECOHEALTH 2016; 13:499-510. [PMID: 27436109 PMCID: PMC7088376 DOI: 10.1007/s10393-016-1144-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 06/07/2016] [Accepted: 06/07/2016] [Indexed: 05/11/2023]
Abstract
Pneumoviruses have been identified as causative agents in several respiratory disease outbreaks in habituated wild great apes. Based on phylogenetic evidence, transmission from humans is likely. However, the pathogens have never been detected in the local human population prior to or at the same time as an outbreak. Here, we report the first simultaneous detection of a human respiratory syncytial virus (HRSV) infection in western lowland gorillas (Gorilla gorilla gorilla) and in the local human population at a field program in the Central African Republic. A total of 15 gorilla and 15 human fecal samples and 80 human throat swabs were tested for HRSV, human metapneumovirus, and other respiratory viruses. We were able to obtain identical sequences for HRSV A from four gorillas and four humans. In contrast, we did not detect HRSV or any other classic human respiratory virus in gorilla fecal samples in two other outbreaks in the same field program. Enterovirus sequences were detected but the implication of these viruses in the etiology of these outbreaks remains speculative. Our findings of HRSV in wild but human-habituated gorillas underline, once again, the risk of interspecies transmission from humans to endangered great apes.
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Affiliation(s)
- Kim S Grützmacher
- Project group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Seestr 10, 13353, Berlin, Germany
| | - Sophie Köndgen
- Project group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Seestr 10, 13353, Berlin, Germany
| | - Verena Keil
- Project group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Seestr 10, 13353, Berlin, Germany
| | - Angelique Todd
- World Wildlife Fund (WWF), Dzanga Sangha Protected Areas, Bayanga, Central African Republic
| | - Anna Feistner
- World Wildlife Fund (WWF), Dzanga Sangha Protected Areas, Bayanga, Central African Republic
| | | | - Klara Petrzelkova
- Institute of Vertebrate Biology, Academy of Sciences, Brno, 60365, Czech Republic
- Biology Centre, Institute of Parasitology, Academy of Sciences of the Czech Republic, Ceske Budejovice, Czech Republic
| | - Terrence Fuh
- World Wildlife Fund (WWF), Dzanga Sangha Protected Areas, Bayanga, Central African Republic
| | - Siv Aina Leendertz
- Project group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Seestr 10, 13353, Berlin, Germany
| | - Sébastien Calvignac-Spencer
- Project group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Seestr 10, 13353, Berlin, Germany
| | - Fabian H Leendertz
- Project group Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institute, Seestr 10, 13353, Berlin, Germany.
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Lee SB, Song JA, Choi GE, Kim HS, Jang YJ. Rhinovirus infection in murine chronic allergic rhinosinusitis model. Int Forum Allergy Rhinol 2016; 6:1131-1138. [PMID: 27348296 DOI: 10.1002/alr.21805] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 04/05/2016] [Accepted: 05/10/2016] [Indexed: 01/22/2023]
Abstract
BACKGROUND Patients with chronic rhinosinusitis (CRS) commonly experience aggravation of their symptoms after viral upper respiratory infection (URI). Rhinovirus (RV) is the most common URI-causing virus. However, there is a lack of a mouse model of RV infection and in vivo studies investigating the effect of RV infection on CRS. METHODS A mouse model of chronic allergic rhinosinusitis (CARS) was established by sensitizing to ovalbumin (OVA) through intraperitoneal injection followed by nasal challenges with OVA for 5 weeks. Both control and CARS mice were euthanized at 48 hours after infection with minor group RV serotype 1B (RV1B). Sinonasal complex samples were evaluated histologically; and interleukin (IL)-6, macrophage inflammatory protein (MIP)-2, IL-13, tumor necrosis factor (TNF)-α, and interferon (IFN)-γ were measured in the nasal lavage fluid. The RV1B-infected areas in control and CARS mice were identified using immunofluorescence. RESULTS In the infected control mice group, RV1B increased secretory hyperplasia in the sinonasal mucosa and the production of proinflammatory cytokines including INF-γ, MIP-2, and IL-13. Immunohistochemical analysis of nasal mucosa from RV1B-infected mice presented abundant RV1B staining, which was distributed between the epithelium and the lamina propria. In the CARS group, the RV1B-infected area per unit was significantly higher than that in control mice. However, RV1B infection neither increased the proinflammatory cytokine secretion nor worsened the histology significantly. CONCLUSION We successfully established a mouse model of upper airway RV infection by nasal inoculation with RV1B. Although there was histologically-proven increased RV infection in the CARS model, the infection did not intensify sinonasal inflammation.
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Affiliation(s)
- Sung Bu Lee
- Department of Otolaryngology, Yuseoung Sun General Hospital, Daejeon, Republic of Korea
| | - Jeong-Ah Song
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Go-Eun Choi
- Institute of Convergence Bio-Health, Dong-A University, Busan, Republic of Korea
| | - Hun Sik Kim
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea.,Cellular Dysfunction Research Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.,Department of Microbiology, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yong Ju Jang
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Abstract
Human rhinoviruses (HRVs), first discovered in the 1950s, are responsible for more than one-half of cold-like illnesses and cost billions of dollars annually in medical visits and missed days of work. Advances in molecular methods have enhanced our understanding of the genomic structure of HRV and have led to the characterization of three genetically distinct HRV groups, designated groups A, B, and C, within the genus Enterovirus and the family Picornaviridae. HRVs are traditionally associated with upper respiratory tract infection, otitis media, and sinusitis. In recent years, the increasing implementation of PCR assays for respiratory virus detection in clinical laboratories has facilitated the recognition of HRV as a lower respiratory tract pathogen, particularly in patients with asthma, infants, elderly patients, and immunocompromised hosts. Cultured isolates of HRV remain important for studies of viral characteristics and disease pathogenesis. Indeed, whether the clinical manifestations of HRV are related directly to viral pathogenicity or secondary to the host immune response is the subject of ongoing research. There are currently no approved antiviral therapies for HRVs, and treatment remains primarily supportive. This review provides a comprehensive, up-to-date assessment of the basic virology, pathogenesis, clinical epidemiology, and laboratory features of and treatment and prevention strategies for HRVs.
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Affiliation(s)
- Samantha E. Jacobs
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Weill Cornell Medical College, New York, New York, USA
| | - Daryl M. Lamson
- Laboratory of Viral Diseases, Wadsworth Center, Albany, New York, USA
| | | | - Thomas J. Walsh
- Transplantation-Oncology Infectious Diseases Program, Division of Infectious Diseases, Weill Cornell Medical College, New York, New York, USA
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Productive entry pathways of human rhinoviruses. Adv Virol 2012; 2012:826301. [PMID: 23227049 PMCID: PMC3513715 DOI: 10.1155/2012/826301] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Accepted: 10/18/2012] [Indexed: 12/20/2022] Open
Abstract
Currently, complete or partial genome sequences of more than 150 human rhinovirus (HRV) isolates are known. Twelve species A use members of the low-density lipoprotein receptor family for cell entry, whereas the remaining HRV-A and all HRV-B bind ICAM-1. HRV-Cs exploit an unknown receptor. At least all A and B type viruses depend on receptor-mediated endocytosis for infection. In HeLa cells, they are internalized mainly by a clathrin- and dynamin-dependent mechanism. Upon uptake into acidic compartments, the icosahedral HRV capsid expands by ~4% and holes open at the 2-fold axes, close to the pseudo-3-fold axes and at the base of the star-shaped dome protruding at the vertices. RNA-protein interactions are broken and new ones are established, the small internal myristoylated capsid protein VP4 is expelled, and amphipathic N-terminal sequences of VP1 become exposed. The now hydrophobic subviral particle attaches to the inner surface of endosomes and transfers its genomic (+) ssRNA into the cytosol. The RNA leaves the virus starting with the poly(A) tail at its 3′-end and passes through a membrane pore contiguous with one of the holes in the capsid wall. Alternatively, the endosome is disrupted and the RNA freely diffuses into the cytoplasm.
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Wang X, Zhang N, Glorieux S, Holtappels G, Vaneechoutte M, Krysko O, Zhang L, Han D, Nauwynck HJ, Bachert C. Herpes simplex virus type 1 infection facilitates invasion of Staphylococcus aureus into the nasal mucosa and nasal polyp tissue. PLoS One 2012; 7:e39875. [PMID: 22768151 PMCID: PMC3387208 DOI: 10.1371/journal.pone.0039875] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Accepted: 05/28/2012] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Staphylococcus aureus (S. aureus) plays an important role in the pathogenesis of severe chronic airway disease, such as nasal polyps. However the mechanisms underlying the initiation of damage and/or invasion of the nasal mucosa by S. aureus are not clearly understood. The aim of this study was to investigate the interaction between S. aureus and herpes simplex virus type 1 (HSV1) in the invasion of the nasal mucosa and nasal polyp tissue. METHODOLOGY/PRINCIPAL FINDINGS Inferior turbinate and nasal polyp samples were cultured and infected with either HSV1 alone, S. aureus alone or a combination of both. Both in turbinate mucosa and nasal polyp tissue, HSV1, with or without S. aureus incubation, led to focal infection of outer epithelial cells within 48 h, and loss or damage of the epithelium and invasion of HSV1 into the lamina propria within 72 h. After pre-infection with HSV1 for 24 h or 48 h, S. aureus was able to pass the basement membrane and invade the mucosa. Epithelial damage scores were significantly higher for HSV1 and S. aureus co-infected explants compared with control explants or S. aureus only-infected explants, and significantly correlated with HSV1-invasion scores. The epithelial damage scores of nasal polyp tissues were significantly higher than those of inferior turbinate tissues upon HSV1 infection. Consequently, invasion scores of HSV1 of nasal polyp tissues were significantly higher than those of inferior turbinate mucosa in the HSV1 and co-infection groups, and invasion scores of S. aureus of nasal polyp tissues were significantly higher than those of inferior turbinate tissues in the co-infection group. CONCLUSIONS/SIGNIFICANCE HSV1 may lead to a significant damage of the nasal epithelium and consequently may facilitate invasion of S. aureus into the nasal mucosa. Nasal polyp tissue is more susceptible to the invasion of HSV1 and epithelial damage by HSV1 compared with inferior turbinate mucosa.
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Affiliation(s)
- XiangDong Wang
- Upper Airways Research Laboratory, Department of Oto-Rhino-Laryngology, Ghent University Hospital, Ghent, Belgium
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Nan Zhang
- Upper Airways Research Laboratory, Department of Oto-Rhino-Laryngology, Ghent University Hospital, Ghent, Belgium
| | - Sarah Glorieux
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Gabriele Holtappels
- Upper Airways Research Laboratory, Department of Oto-Rhino-Laryngology, Ghent University Hospital, Ghent, Belgium
| | - Mario Vaneechoutte
- Laboratory of Bacteriology Research, Department of Clinical Chemistry, Microbiology and Immunology, Ghent University, Ghent, Belgium
| | - Olga Krysko
- Upper Airways Research Laboratory, Department of Oto-Rhino-Laryngology, Ghent University Hospital, Ghent, Belgium
| | - Luo Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Institute of Otolaryngology, Beijing, People’s Republic of China
- * E-mail: (LZ); (DH)
| | - Demin Han
- Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing Institute of Otolaryngology, Beijing, People’s Republic of China
- * E-mail: (LZ); (DH)
| | - Hans J. Nauwynck
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Claus Bachert
- Upper Airways Research Laboratory, Department of Oto-Rhino-Laryngology, Ghent University Hospital, Ghent, Belgium
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Herpes simplex virus type 1 penetrates the basement membrane in human nasal respiratory mucosa. PLoS One 2011; 6:e22160. [PMID: 21789229 PMCID: PMC3137608 DOI: 10.1371/journal.pone.0022160] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Accepted: 06/16/2011] [Indexed: 11/28/2022] Open
Abstract
Background Herpes simplex virus infections are highly prevalent in humans. However, the current therapeutics suffer important drawbacks such as limited results in neonates, increasing occurrence of resistance and impeded treatment of stromal infections. Remarkably, interactions of herpesviruses with human mucosa, the locus of infection, remain poorly understood and the underlying mechanisms in stromal infection remain controversial. Methodology/Principal Findings A human model consisting of nasal respiratory mucosa explants was characterised. Viability and integrity were examined during 96 h of cultivation. HSV1-mucosa interactions were analysed. In particular, we investigated whether HSV1 is able to reach the stroma. Explant viability and integrity remained preserved. HSV1 induced rounding up and loosening of epithelial cells with very few apoptotic and necrotic cells observed. Following 16–24 h of infection, HSV1 penetrated the basement membrane and replicated in the underlying lamina propria. Conclusions/Significance This human explant model can be used to study virus-mucosa interactions and viral mucosal invasion mechanisms. Using this model, our results provide a novel insight into the HSV1 stromal invasion mechanism and for the first time directly demonstrate that HSV1 can penetrate the basement membrane.
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Nunes SF, Murcia PR, Tiley LS, Brown IH, Tucker AW, Maskell DJ, Wood JLN. An ex vivo swine tracheal organ culture for the study of influenza infection. Influenza Other Respir Viruses 2010; 4:7-15. [PMID: 20021502 PMCID: PMC4941949 DOI: 10.1111/j.1750-2659.2009.00119.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Background The threat posed by swine influenza viruses with potential to transmit from pig populations to other hosts, including humans, requires the development of new experimental systems to study different aspects of influenza infection. Ex vivo organ culture (EVOC) systems have been successfully used in the study of both human and animal respiratory pathogens. Objectives We aimed to develop an air interface EVOC using pig tracheas in the study of influenza infection demonstrating that tracheal explants can be effectively maintained in organ culture and support productive influenza infection. Methods Tracheal explants were maintained in the air interface EVOC system for 7 days. Histological characteristics were analysed with different staining protocols and co‐ordinated ciliary movement on the epithelial surface was evaluated through a bead clearance assay. Explants were infected with a swine H1N1 influenza virus. Influenza infection of epithelial cells was confirmed by immunohistochemistry and viral replication was quantified by plaque assays and real‐time RT‐PCR. Results Histological analysis and bead clearance assay showed that the tissue architecture of the explants was maintained for up to 7 days, while ciliary movement exhibited a gradual decrease after 4 days. Challenge with swine H1N1 influenza virus showed that the EVOC tracheal system shows histological changes consistent with in vivo influenza infection and supported productive viral replication over multiple cycles of infection. Conclusion The air interface EVOC system using pig trachea described here constitutes a useful biological tool with a wide range of applications in the study of influenza infection.
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Affiliation(s)
- Sandro F Nunes
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
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Wang JH, Kwon HJ, Jang YJ. Rhinovirus upregulates matrix metalloproteinase-2, matrix metalloproteinase-9, and vascular endothelial growth factor expression in nasal polyp fibroblasts. Laryngoscope 2010; 119:1834-8. [PMID: 19572270 DOI: 10.1002/lary.20574] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVES/HYPOTHESIS Upregulation of matrix metalloproteinase (MMP) and vascular endothelial growth factor (VEGF) has been suggested to have an important role in the pathogenesis of nasal polyps (NPs). The aim of this study was to investigate the effect of rhinovirus (RV) infection on the expression of MMPs, tissue inhibitor of metalloproteinase (TIMP)-1, and VEGF in NP fibroblasts. METHODS NP fibroblasts (5 x 10(5) cells/mL) obtained from patients with chronic rhinosinusitis with nasal polyps (CRSwNP) were infected with RV serotype 16 (RV-16) for 4 hours. The RV-16 infection was confirmed by seminested reverse transcriptase-polymerase chain reaction (RT-PCR) and in situ hybridization. After 48 hours, MMP-2, MMP-9, TIMP-1, and VEGF protein levels were measured from culture supernatants by enzyme-linked immunosorbent assay. The changes in the expression of MMP-2, MMP-9, TIMP-1, and VEGF mRNA were assayed by RT-PCR. RESULTS RV-16 infection significantly enhanced the gene and protein expressions of MMP-2, MMP-9, and VEGF in NP fibroblasts, whereas TIMP-1 expression was not significantly affected by RV-16. MMP-2, MMP-9, and VEGF protein expression increased by 2.39-, 2.99-, and 3.02-fold, respectively, in RV-infected NP fibroblasts compared to noninfected controls. RV-16 infection also significantly upregulated the expression of MMP-2, MMP-9, and VEGF mRNA by 1.27-, 1.70-, and 1.53-fold, respectively, compared to control levels. CONCLUSIONS These in vitro findings suggest that RV infection may contribute to the pathogenesis of NP formation in patients with CRSwNP.
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Affiliation(s)
- Jong Hwan Wang
- Department of Otolaryngology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, South Korea
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Szentiks CA, Köndgen S, Silinski S, Speck S, Leendertz FH. Lethal pneumonia in a captive juvenile chimpanzee (Pan troglodytes) due to human-transmitted human respiratory syncytial virus (HRSV) and infection with Streptococcus pneumoniae. J Med Primatol 2009; 38:236-40. [PMID: 19239572 DOI: 10.1111/j.1600-0684.2009.00346.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND During an outbreak of respiratory disease in captive chimpanzees (Pan troglodytes), gorillas (Gorilla gorilla), Bornean orangutans (Pongo pygmaeus), and red-capped mangabeys (Cercocebus torquatus) also staff members showed non-specific upper respiratory signs. One infant female chimpanzee with severe respiratory symptoms died despite immediate medical treatment and was submitted for necropsy. METHODS Routine post mortem, histological and bacteriological examinations were conducted. Additionally lung tissue samples form the chimpanzee and swab samples from the staff members and the other primates were examined by PCR. RESULTS A severe catarrhal to purulent bronchopneumonia and an interstitial pneumonia were found and human respiratory syncytial virus (HRSV) as well as Streptococcus pneumoniae was detected in lung samples by PCR. Swab samples from one animal keeper revealed the same HRSV sequence as of the chimpanzee. CONCLUSIONS Therefore, it is suggested that the outbreak of respiratory disease within a zoological institution was due to transmission of HRSV between both human and primates.
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Priestnall SL, Mitchell JA, Brooks HW, Brownlie J, Erles K. Quantification of mRNA encoding cytokines and chemokines and assessment of ciliary function in canine tracheal epithelium during infection with canine respiratory coronavirus (CRCoV). Vet Immunol Immunopathol 2008; 127:38-46. [PMID: 18977539 PMCID: PMC7112596 DOI: 10.1016/j.vetimm.2008.09.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2008] [Revised: 08/05/2008] [Accepted: 09/12/2008] [Indexed: 01/07/2023]
Abstract
One of the first lines of defence against viral infection is the innate immune response and the induction of antiviral type I interferons (IFNs). However some viruses, including the group 2 coronaviruses, have evolved mechanisms to overcome or circumvent the host antiviral response. Canine respiratory coronavirus (CRCoV) has previously been shown to have a widespread international presence and has been implicated in outbreaks of canine infectious respiratory disease (CIRD). This study aimed to quantify pro-inflammatory cytokine mRNAs following infection of canine air-interface tracheal cultures with CRCoV. Within this system, immunohistochemistry identified ciliated epithelial and goblet cells as positive for CRCoV, identical to naturally infected cases, thus the data obtained would be fully transferable to the situation in vivo. An assay of ciliary function was used to assess potential effects of CRCoV on the mucociliary system. CRCoV was shown to reduce the mRNA levels of the pro-inflammatory cytokines TNF-α and IL-6 and the chemokine IL-8 during the 72 h post-inoculation. The mechanism for this is unknown, however the suppression of a key antiviral strategy during a period of physiologic and immunological stress, such as on entry to a kennel, could potentially predispose a dog to further pathogenic challenge and the development of respiratory disease.
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Affiliation(s)
- Simon L Priestnall
- Department of Pathology and Infectious Diseases, The Royal Veterinary College, Hatfield, Hertfordshire, UK.
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14
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In vitro culture of equine respiratory mucosa explants. Vet J 2008; 181:280-7. [PMID: 18539059 DOI: 10.1016/j.tvjl.2008.03.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 03/13/2008] [Accepted: 03/24/2008] [Indexed: 11/22/2022]
Abstract
An in vitro model of the upper respiratory tract of the horse was developed to investigate mechanisms of respiratory diseases. Four tissues of the upper respiratory tract of three horses were collected. Explants were maintained in culture at an air-liquid interface for 96h. At 0, 24, 48, 72 and 96h of cultivation, a morphometric analysis was performed using light microscopy, scanning electron microscopy and transmission electron microscopy. The explants were judged on morphometric changes of epithelium, basement membrane and connective tissue. Viability was evaluated using a fluorescent Terminal deoxynucleotidyl transferase-mediated dUTP Nick End Labelling (TUNEL) staining. No significant changes in morphometry and viability of any of the explants were observed during cultivation. Hence, the in vitro model may be useful to study infectious and non-infectious diseases at the level of the equine respiratory tract, with potential application to the development of vaccines and treatments for diseases of the respiratory tract.
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Park SK, Lee WJ, Yang YI. Organ culture at the air-liquid interface maintains structural and functional integrities of inflammatory and fibrovascular cells of nasal polyps. ACTA ACUST UNITED AC 2007; 21:402-7. [PMID: 17882906 DOI: 10.2500/ajr.2007.21.3050] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Both inflammatory and fibrovascular cells play an important role in development of nasal polyps (NPs). In this study, we have developed a culture system to maintain structural and functional integrities of submucosal cells in vitro. METHODS NP tissue was cultured on a gelatin sponge at air-liquid (AL) interface or was cultured in submerging. Tissues were analyzed for survival, structural integrity, and vascular endothelial growth factor (VEGF) expression. RESULTS Most cells of NPs cultured in submerging died within 3 days. In culture at the AL interface, epithelium as well as submucosa kept structural integrity during the culture period. RT-PCR and immunohistochemistry showed that submucosa cells displayed VEGF expression, which is a major inducer of angiogenesis and edema of NPs. CONCLUSION Our study is the first demonstration that organ culture of NPs at the AL interface retains integrity of both epithelium and submucosa and this culture method possibly will be used to study the pathogenesis of NPs.
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Affiliation(s)
- Seong Kook Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Inje University, College of Medicine, Pusan Paik Hospital, Busan, Korea
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Wright PF, Deatly AM, Karron RA, Belshe RB, Shi JR, Gruber WC, Zhu Y, Randolph VB. Comparison of results of detection of rhinovirus by PCR and viral culture in human nasal wash specimens from subjects with and without clinical symptoms of respiratory illness. J Clin Microbiol 2007; 45:2126-9. [PMID: 17475758 PMCID: PMC1933022 DOI: 10.1128/jcm.02553-06] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Human rhinoviruses (HRV) cause acute upper respiratory illness. The frequency of HRV-associated illnesses appears greater when PCR assays are used to detect rhinoviruses. The present study performed PCR-based detection of HRV upon entry of subjects into respiratory syncytial virus and parainfluenza type 3 vaccine trials when subjects were symptom-free and upon subsequent development of clinical symptoms of respiratory illness during the trial. The background of HRV PCR positivity in symptom-free individuals (30/139 [22%]) was only slightly lower than in those with respiratory illness (28/77 [36%]). For subjects with multiple samples, it was estimated that HRV was detectable by PCR for approximately 100 days before, during, and after clinical symptoms were documented. PCR is a remarkably more sensitive method of detecting HRV than is tissue culture. The presence of HRV RNA may not always reflect an association with infectious virus production. The limited association of HRV RNA with illness suggests caution in assigning causality of HRV PCR positivity to clinical symptoms of respiratory illness.
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Affiliation(s)
- Peter F Wright
- Vanderbilt University, D-7219 MCN, Nashville, TN 37232, USA.
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Glorieux S, Van den Broeck W, van der Meulen KM, Van Reeth K, Favoreel HW, Nauwynck HJ. In vitro culture of porcine respiratory nasal mucosa explants for studying the interaction of porcine viruses with the respiratory tract. J Virol Methods 2007; 142:105-12. [PMID: 17324473 DOI: 10.1016/j.jviromet.2007.01.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2006] [Revised: 12/18/2006] [Accepted: 01/18/2007] [Indexed: 11/29/2022]
Abstract
The mucosal surface of the respiratory tract is a common site of entry of many viruses. Molecular and cellular aspects of the interactions of respiratory viruses with the respiratory nasal mucosa are largely unknown. In order to be able to study those interactions in depth, an in vitro model was set up. This model consists of porcine respiratory nasal mucosa explants, cultured at an air-liquid interface. Light microscopy, scanning electron microscopy and transmission electron microscopy, combined with morphometric analysis and a fluorescent Terminal deoxynucleotidyl transferase mediated dUTP Nick End Labelling (TUNEL) staining were used to evaluate the effects of in vitro culture on the integrity and viability of the explants. The explants were maintained in culture for up to 60 h post-sampling without significant morphometric (epithelial thickness, epithelial morphology, thickness of the lamina reticularis, continuity of the lamina densa, relative amounts of collagen and nuclei) changes and changes in viability. The potential to infect the explants was demonstrated for two porcine respiratory viruses of major importance: suid herpesvirus 1 and swine influenza virus H1N1. In conclusion, this in vitro model represents an ideal tool to study interactions between infectious agents and porcine respiratory nasal mucosa.
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MESH Headings
- Animals
- Cells, Cultured
- Herpesvirus 1, Suid/pathogenicity
- Herpesvirus 1, Suid/physiology
- Influenza A Virus, H1N1 Subtype/pathogenicity
- Influenza A Virus, H1N1 Subtype/physiology
- Microscopy, Electron, Scanning
- Microscopy, Electron, Transmission
- Microscopy, Fluorescence
- Models, Biological
- Nasal Mucosa/cytology
- Nasal Mucosa/ultrastructure
- Nasal Mucosa/virology
- Respiratory System/virology
- Swine
- Virus Replication
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Affiliation(s)
- Sarah Glorieux
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
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