51
|
Wollants E, Beller L, Beuselinck K, Bloemen M, Lagrou K, Reynders M, Van Ranst M. A decade of enterovirus genetic diversity in Belgium. J Clin Virol 2019; 121:104205. [PMID: 31722268 DOI: 10.1016/j.jcv.2019.104205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 10/15/2019] [Accepted: 10/22/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND Enteroviruses are responsible for a wide range of clinical symptoms.Enterovirus D68 was already known to cause mild to severe respiratory infections, but in the last few years, it has also been associated with neurological symptoms and acute flaccid paralysis. OBJECTIVES In this epidemiological surveillance in Belgium, 1521 enteroviruspositive samples were genotyped. STUDY DESIGN Enterovirus-positive patient samples were collected from the University Hospitals Leuven and other hospitals and medical practices in Belgium from 2007 to 2018. Molecular typing was done by RT-PCR using different primers sets. EV-A and EV-B were typed by sequencing part of VP1. For EVC and EV-D, the VP4/VP2 region was used together with the non-coding region. RESULTS In this epidemiological survey with samples collected over 12 years, 35 different EV types were detected in 1521 patient samples. Enterovirus species B was by far the most dominant species in our samples (93%). Echovirus 30 was most frequently found (24%), followed by echovirus 6 (8%) and echovirus 9 (7%). In 2018, there was an outbreak for the first time of enterovirus D68 with severe respiratory infections but no acute flaccid paralysis. Phylogenetic analyses showed that the collected outbreak strains coexist in different clades. CONCLUSIONS For more than a decade, the circulating enterovirus strains were investigated in Belgium. During this time span, echovirus 30 was the most frequently detected and peaked every 3 years. Enterovirus D68 began an upsurge in 2018, but thus far without being clinically associated with acute flaccid paralysis.
Collapse
Affiliation(s)
- Elke Wollants
- KU Leuven, Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical & Epidemiological Virology, BE-3000, Leuven, Belgium.
| | - Leen Beller
- KU Leuven, Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Viral Metagenomics, BE-3000, Leuven, Belgium
| | - Kurt Beuselinck
- Department of Laboratory Medicine, University Hospitals Leuven, BE-3000, Leuven, Belgium
| | - Mandy Bloemen
- KU Leuven, Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical & Epidemiological Virology, BE-3000, Leuven, Belgium
| | - Katrien Lagrou
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Bacteriology and Mycology, BE-3000, Leuven, Belgium; Department of Laboratory Medicine and National Reference Center for Respiratory Pathogens and Enteroviruses, University Hospitals Leuven, BE-3000, Leuven, Belgium
| | - Marijke Reynders
- Unit of Molecular Microbiology, Medical Microbiology, Department of Laboratory Medicine, AZ Sint-Jan Brugge AV, BE-8000 Bruges, Belgium
| | - Marc Van Ranst
- KU Leuven, Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical & Epidemiological Virology, BE-3000, Leuven, Belgium; Department of Laboratory Medicine and National Reference Center for Respiratory Pathogens and Enteroviruses, University Hospitals Leuven, BE-3000, Leuven, Belgium
| |
Collapse
|
52
|
Riva M, Wouters R, Weerasekera A, Belderbos S, Nittner D, Thal DR, Baert T, Giovannoni R, Gsell W, Himmelreich U, Van Ranst M, Coosemans A. CT-2A neurospheres-derived high-grade glioma in mice: a new model to address tumor stem cells and immunosuppression. Biol Open 2019; 8:bio.044552. [PMID: 31511246 PMCID: PMC6777368 DOI: 10.1242/bio.044552] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Recently, several promising treatments for high-grade gliomas (HGGs) failed to provide significant benefit when translated from the preclinical setting to patients. Improving the animal models is fundamental to overcoming this translational gap. To address this need, we developed and comprehensively characterized a new in vivo model based on the orthotopic implantation of CT-2A cells cultured in neurospheres (NS/CT-2A). Murine CT-2A methylcholanthrene-induced HGG cells (C57BL/6 background) were cultured in monolayers (ML) or NS and orthotopically inoculated in syngeneic animals. ML/CT-2A and NS/CT-2A tumors' characterization included the analysis of tumor growth, immune microenvironment, glioma stem cells (GSCs), vascularization and metabolites. The immuno-modulating properties of NS/CT-2A and ML/CT-2A cells on splenocytes were tested in vitro. Mice harboring NS/CT-2A tumors had a shorter survival than those harboring ML/CT-2A tumors (P=0.0033). Compared to standard ML/CT-2A tumors, NS/CT-2A tumors showed more abundant GSCs (P=0.0002 and 0.0770 for Nestin and CD133, respectively) and regulatory T cells (Tregs, P=0.0074), and a strong tendency towards an increased vascularization (P=0.0503). There were no significant differences in metabolites' composition between NS/ and ML/CT-2A tumors. In vitro, NS were able to drive splenocytes towards a more immunosuppressive status by reducing CD8+ T cells (P=0.0354) and by promoting Tregs (P=0.0082), macrophages (MF, P=0.0019) and their M2 subset (P=0.0536). Compared to standard ML/CT-2A tumors, NS/CT-2A tumors show a more aggressive phenotype with increased immunosuppression and GSCs proliferation. Because of these specific features, the NS/CT-2A model represents a clinically relevant platform in the search for new HGG treatments aimed at reducing immunosuppression and eliminating GSCs. Summary: The NS/CT-2A tumor model represents a valuable research platform for the study of innovative treatments aimed at eliminating GSCs and reversing the tumor-induced immunosuppression in HGGs.
Collapse
Affiliation(s)
- Matteo Riva
- Department of Oncology, Laboratory of Tumor Immunology and Immunotherapy, KU Leuven, Leuven 3000, Belgium .,Department of Neurosurgery, Erasme Hospital, Bruxelles 1070, Belgium
| | - Roxanne Wouters
- Department of Oncology, Laboratory of Tumor Immunology and Immunotherapy, KU Leuven, Leuven 3000, Belgium
| | - Akila Weerasekera
- Biomedical MRI, Department of Imaging and Pathology and Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, Leuven 3000, Belgium
| | - Sarah Belderbos
- Biomedical MRI, Department of Imaging and Pathology and Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, Leuven 3000, Belgium
| | - David Nittner
- Center for the Biology of Disease, KU Leuven Center for Human Genetics - InfraMouse, VIB, University of Leuven, Leuven 3000, Belgium
| | - Dietmar R Thal
- Laboratory of Neuropathology, Department of Imaging and Pathology, Leuven Brain Institute, KU Leuven, Leuven 3000, Belgium.,Department of Pathology, UZ-Leuven, Leuven 3000, Belgium
| | - Thaïs Baert
- Department of Oncology, Laboratory of Tumor Immunology and Immunotherapy, KU Leuven, Leuven 3000, Belgium.,Department of Gynecology and Gynecologic Oncology, Kliniken Essen Mitte (KEM), Essen 2910, Germany
| | - Roberto Giovannoni
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza 20900, Italy
| | - Willy Gsell
- Biomedical MRI, Department of Imaging and Pathology and Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, Leuven 3000, Belgium
| | - Uwe Himmelreich
- Biomedical MRI, Department of Imaging and Pathology and Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, Leuven 3000, Belgium
| | - Marc Van Ranst
- Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Leuven 3000, Belgium
| | - An Coosemans
- Department of Oncology, Laboratory of Tumor Immunology and Immunotherapy, KU Leuven, Leuven 3000, Belgium.,Department of Gynaecology and Obstetrics, Leuven Cancer Institute, UZ Leuven, Leuven 3000, Belgium
| |
Collapse
|
53
|
Thijssen M, Beller L, Yinda KC, Deboutte W, Maes P, Matthijnssen J, Van Ranst M, Pourkarim M. A45 Genetic diversity of anelloviruses in the blood virome. Virus Evol 2019. [PMCID: PMC6735794 DOI: 10.1093/ve/vez002.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The microbiome has an important impact on human health. The microbiome is a complex ecosystem that contains of a wide variety of microorganisms shaped by the immune system, host genetic factors, and the environment. Studies of the human virome have identified a diverse group of viruses in different compartments of the body, including viruses of the Anelloviridae family. These viruses are widespread among the general population. In various clinical conditions an association has been found between the Anelloviridae abundance and the patient’s immune status. However, no pathological consequences have been identified for this viral family. In this study, we analyzed the Anelloviridae diversity in plasma samples of liver transplant recipients. The virome contents of plasma samples from liver transplant recipients were sequenced by next-generation sequencing techniques on an Illumina platform (NextSeq). Complete Anelloviridae ORF1 contigs were extracted from metagenomic data and aligned with 66 RefSeq anellovirus sequences for phylogenetic analysis. The study included 144 plasma samples of 24 liver transplant recipients who had been infected by the hepatitis B virus and developed end-stage liver disease. The identified Anelloviridae viruses belong to the Alphatorquevirus, Betatorquevirus, and Gammatorquevirus genera. In total, we were able to retrieve 142 unique anellovirus contigs that were less than 95 per cent identical on the nucleotide level. A phylogenetic tree was constructed from these contigs with 65 RefSeq sequences retrieved from GenBank. The majority of the identified Anelloviridae sequences were assigned to the Alphatorquevirus genus, which represents the largest group of anelloviruses. We were able to identify a high diversity of Anelloviridae viruses in serum samples of liver transplant recipients. Phylogenetic analysis showed that the majority of anelloviruses belonged to the Alphatorque genus. Future research should focus at elucidating the role of these commensal viruses in both immunocompromised and healthy individuals.
Collapse
Affiliation(s)
- Marijn Thijssen
- Laboratory of Clinical Virology, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| | - Leen Beller
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| | - Kwe Claude Yinda
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| | - Ward Deboutte
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| | - Piet Maes
- Laboratory of Clinical Virology, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| | - Jelle Matthijnssen
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical Virology, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| | - Mahmoudreza Pourkarim
- Laboratory of Clinical Virology, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
- Laboratory of Clinical Virology, Department of Microbiology and Immunology, KU Leuven-University of Leuven, Rega Institute, Leuven, Belgium
| |
Collapse
|
54
|
Abstract
Although Seoul orthohantavirus is the only globally spread hantavirus pathogen, few confirmed human infections with this virus have been reported in Western countries, suggesting lower medical awareness of the milder, transient, and often chameleon-like symptoms of this zoonosis. We describe lesser known clinical and laboratory characteristics to help improve underreporting of this virus.
Collapse
|
55
|
Wollants E, Smolders D, Naesens R, Bruynseels P, Lagrou K, Matthijnssens J, Van Ranst M. Use of Next-Generation Sequencing for Diagnosis of West Nile Virus Infection in Patient Returning to Belgium from Hungary. Emerg Infect Dis 2019; 24:2380-2382. [PMID: 30457549 PMCID: PMC6256386 DOI: 10.3201/eid2412.180494] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
An elderly patient in Belgium who became critically ill after returning from Hungary was tested for pathogens using routine diagnostic tests. All results were negative. However, using next-generation sequencing on a cultured respiratory sample, laboratorians detected a complete West Nile virus genome, similar to strains isolated in southeastern Europe.
Collapse
|
56
|
Tamim S, Matthijnssens J, Heylen E, Zeller M, Van Ranst M, Salman M, Hasan F. Evidence of zoonotic transmission of VP6 and NSP4 genes into human species A rotaviruses isolated in Pakistan in 2010. Arch Virol 2019; 164:1781-1791. [PMID: 31079214 DOI: 10.1007/s00705-019-04271-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 03/30/2019] [Indexed: 10/26/2022]
Abstract
Introduction of animal group A rotavirus (RVA) gene segments into the human RVA population is a major factor shaping the genetic landscape of human RVA strains. The VP6 and NSP4 genes of 74 G/P-genotyped RVA isolates collected in Rawalpindi during 2010 were analyzed, revealing the presence of VP6 genotypes I1 (60.8%) and I2 (39.2%) and NSP4 genotypes E1 (60.8%), E2 (28.3%) and E-untypable (10.8%) among the circulating human RVA strains. The typical human RVA combinations I1E1 and I2E2 were found in 59.4% and 24.3% of the cases, respectively, whereas 5.4% of the RVA strains were reassortants, i.e., either I1E2 or I2E1. The phylogeny of the NSP4 gene showed that one G2P[4] and two G1P[6] RVA strains clustered with porcine E1 RVA strains or RVA strains that were considered to be (partially) of porcine origin. In addition, the NSP4 gene segment of the unusual human G6P[1] RVA strains clustered closely with bovine E2 RVA strains, further strengthening the hypothesis of an interspecies transmission event. The study further demonstrates the role of genomic re-assortment and the involvement of interspecies transmission in the evolution of human RVA strains. The VP6 and NSP4 nucleotide sequences analyzed in the study received the GenBank accession numbers KC846908- KC846971 and KC846972-KC847037, respectively.
Collapse
Affiliation(s)
- Sana Tamim
- Public Health Laboratories Division, Department of Virology/Immunology, National Institute of Health, Islamabad, Pakistan.
| | - Jelle Matthijnssens
- Laboratory of Viral Metagenomics, Rega Institute, Herestraat 49 box 1040, 3000, Leuven, Belgium
| | - Elisabeth Heylen
- Laboratory of Virology and Chemotherapy, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Herestraat 49, 3000, Leuven, Belgium
| | - Mark Zeller
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Marc Van Ranst
- Laboratory for Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven-University of Leuven, Leuven, Belgium
| | - Muhammad Salman
- Public Health Laboratories Division, Department of Virology/Immunology, National Institute of Health, Islamabad, Pakistan
| | - Fariha Hasan
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| |
Collapse
|
57
|
Vinken L, Fransen K, Cuypers L, Alexiev I, Balotta C, Debaisieux L, Seguin-Devaux C, García Ribas S, Gomes P, Incardona F, Kaiser R, Ruelle J, Sayan M, Paraschiv S, Paredes R, Peeters M, Sönnerborg A, Vancutsem E, Vandamme AM, Van den Wijngaert S, Van Ranst M, Verhofstede C, Stadler T, Lemey P, Van Laethem K. Earlier Initiation of Antiretroviral Treatment Coincides With an Initial Control of the HIV-1 Sub-Subtype F1 Outbreak Among Men-Having-Sex-With-Men in Flanders, Belgium. Front Microbiol 2019; 10:613. [PMID: 30972053 PMCID: PMC6443750 DOI: 10.3389/fmicb.2019.00613] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 03/11/2019] [Indexed: 11/17/2022] Open
Abstract
Human immunodeficiency virus type 1 (HIV-1) non-B subtype infections occurred in Belgium since the 1980s, mainly amongst migrants and heterosexuals, whereas subtype B predominated in men-having-sex-with-men (MSM). In the last decade, the diagnosis of F1 sub-subtype in particular has increased substantially, which prompted us to perform a detailed reconstruction of its epidemiological history. To this purpose, the Belgian AIDS Reference Laboratories collected HIV-1 pol sequences from all sub-subtype F1-infected patients for whom genotypic drug resistance testing was requested as part of routine clinical follow-up. This data was complemented with HIV-1 pol sequences from countries with a high burden of F1 infections or a potential role in the global origin of sub-subtype F1. The molecular epidemiology of the Belgian subtype F1 epidemic was investigated using Bayesian phylogenetic inference and transmission dynamics were characterized based on birth-death models. F1 sequences were retained from 297 patients diagnosed and linked to care in Belgium between 1988 and 2015. Phylogenetic inference indicated that among the 297 Belgian F1 sequences, 191 belonged to a monophyletic group that mainly contained sequences from people likely infected in Belgium (OR 26.67, 95% CI 9.59–74.15), diagnosed in Flanders (OR 7.28, 95% CI 4.23–12.53), diagnosed at a recent stage of infection (OR 7.19, 95% CI 2.88-17.95) or declared to be MSM (OR 34.8, 95% CI 16.0–75.6). Together with a Spanish clade, this Belgian clade was embedded in the genetic diversity of Brazilian subtype F1 strains and most probably emerged after one or only a few migration events from Brazil to the European continent before 2002. The origin of the Belgian outbreak was dated back to 2002 (95% higher posterior density 2000–2004) and birth-death models suggested that its extensive growth had been controlled (Re < 1) by 2012, coinciding with a time period where delay in antiretroviral treatment initiation substantially declined. In conclusion, phylogenetic reconstruction of the Belgian HIV-1 sub-subtype F1 epidemic illustrates the introduction and substantial dissemination of viral strains in a geographically restricted risk group that was most likely controlled by effective treatment as prevention.
Collapse
Affiliation(s)
- Lore Vinken
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Katrien Fransen
- AIDS Reference Laboratory, Department of Clinical Sciences, Institute of Tropical Medicine Antwerp, Antwerp, Belgium
| | - Lize Cuypers
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Ivailo Alexiev
- National Reference Confirmatory Laboratory of HIV, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Claudia Balotta
- Infectious Diseases and Immunopathology Section, 'L. Sacco' Department of Biomedical and Clinical Sciences, 'L. Sacco' Hospital, University of Milan, Milan, Italy
| | - Laurent Debaisieux
- AIDS Reference Laboratory, CUB-Hopital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Carole Seguin-Devaux
- Laboratory of Retrovirology, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Sergio García Ribas
- AIDS Reference Laboratory, Department of Clinical Sciences, Institute of Tropical Medicine Antwerp, Antwerp, Belgium
| | - Perpétua Gomes
- Serviço de Patologia Clínica, Laboratorio de Biologia Molecular, LMCBM, Centro Hospitalar Lisboa Ocidental, Hospital Egas Moniz, Lisbon, Portugal.,Centro de Investigação Interdisciplinar Egas Moniz, Instituto Universitário Egas Moniz, Almada, Portugal
| | | | - Rolf Kaiser
- Institute of Virology, University of Cologne, Cologne, Germany
| | - Jean Ruelle
- Unit of Medical Microbiology, Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Murat Sayan
- PCR Unit, Clinical Laboratory, Kocaeli University, İzmit, Turkey.,Research Center of Experimental Health Sciences, Near East University, Nicosia, Cyprus
| | - Simona Paraschiv
- Molecular Diagnostics Laboratory, National Institute for Infectious Diseases 'Matei Bals', Bucharest, Romania
| | - Roger Paredes
- IrsiCaixa AIDS Research Institute, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Martine Peeters
- UMI 233 TransVIHMI/INSERM1175, Institut de Recherche pour le Développement, University of Montpellier, Montpellier, France
| | - Anders Sönnerborg
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ellen Vancutsem
- AIDS Reference Laboratory, Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Anne-Mieke Vandamme
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.,Unidade de Microbiologia, Center for Global Health and Tropical Medicine, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Sigi Van den Wijngaert
- AIDS Reference Laboratory, Department of Microbiology, Saint-Pierre University Hospital, Brussels, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.,AIDS Reference Laboratory, University Hospitals Leuven, Leuven, Belgium
| | - Chris Verhofstede
- AIDS Reference Laboratory, Department of Clinical Chemistry, Microbiology and Immunology, Ghent University, Ghent, Belgium
| | - Tanja Stadler
- Department of Biosystems Science and Engineering, ETH Zürich, Basel, Switzerland.,Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Philippe Lemey
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Kristel Van Laethem
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.,AIDS Reference Laboratory, University Hospitals Leuven, Leuven, Belgium
| |
Collapse
|
58
|
van der Hoek L, Verschoor E, Beer M, Höper D, Wernike K, Van Ranst M, Matthijnssens J, Maes P, Sastre P, Rueda P, Drexler JF, Barr J, Edwards T, Millner P, Vermeij P, de Groof A, Thiel V, Dijkman R, Suter-Riniker F, Leib S, Koller R, Ramette A, Engler O, Beuret C. Host switching pathogens, infectious outbreaks and zoonosis: A Marie Skłodowska-Curie innovative training network (HONOURs). Virus Res 2019; 257:120-124. [PMID: 30316331 DOI: 10.1016/j.virusres.2018.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 09/04/2018] [Indexed: 11/26/2022]
Abstract
The increase of the human population is accompanied by growing numbers of livestock to feed this population, as well as by an increase of human invasion into natural habitats of wild animals. As a result, both animals and humans are becoming progressively vulnerable to infections with known (zoonotic) pathogens, but are also increasingly exposed to novel viruses. Global trade as well as climate changes can contribute to pathogen transmission, e.g. through import of infected vectors or expansion of habitats for arthropod vectors such as mosquitoes and midges. Infectious disease outbreaks, especially those by novel viruses, are generally unexpected, and therefore we should be prepared with tools and abilities for immediate action, including the identification of the causative agent, the evaluation of its pathogenic potential for animals and humans, and the fast development of diagnostic assays to allow contact tracing and quarantine measures. HONOURs is a Marie Skłodowska-Curie Actions Innovative Training Network (MSCA-ITN), teaching 15 talented young researchers to become "preparedness-experts". HONOURs, initiated in April 2017, involves 11 laboratories from 6 different European countries, all at the forefront of novel virus investigations and characterizations. The network includes surveillance experts in both the veterinary and the human health sector, who have developed and utilize highly sensitive virus discovery techniques, e.g. next generation sequencing based genomics and universal primers based PCR, to allow identification and characterization of novel viruses. Production of pure viral proteins, providing high-resolution structures, aids in the design of novel, fast and easy-to-use diagnostics. Organotypic in vitro cell cultures systems (e.g. pseudostratified human airway epithelia) provide tools for virus replication, if needed via a reverse genetics platform, and the production of virus stocks permits inoculation in animal models to examine disease, evaluate candidate vaccines, and fulfilment of the Koch's postulates. Scientists of the various institutes will provide training in the HONOURs network through specialized courses and workshops, combined with challenging research projects. The final aim of the network is to deliver 15 expert scientists, ready to act in case of the emergence of an epidemic.
Collapse
Affiliation(s)
- Lia van der Hoek
- Laboratory of Experimental Virology, Department of Medical Microbiology, Academic Medical Center, University of Amsterdam, 1105AZ Amsterdam, the Netherlands.
| | - Ernst Verschoor
- Department of Virology, Biomedical Primate Research Centre, 2288GJ Rijswijk, the Netherlands
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, 17493 Greifswald, Insel Riems, Germany
| | - Dirk Höper
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, 17493 Greifswald, Insel Riems, Germany
| | - Kerstin Wernike
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, 17493 Greifswald, Insel Riems, Germany
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Katholieke Universiteit Leuven, Leuven, Flemish Brabant 3000, Belgium
| | - Jelle Matthijnssens
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Katholieke Universiteit Leuven, Leuven, Flemish Brabant 3000, Belgium
| | - Piet Maes
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Katholieke Universiteit Leuven, Leuven, Flemish Brabant 3000, Belgium
| | - Patricia Sastre
- Inmunología y Genética Aplicada S.A (INGENASA). Madrid, Spain
| | - Paloma Rueda
- Inmunología y Genética Aplicada S.A (INGENASA). Madrid, Spain
| | - Jan Felix Drexler
- Institute of Virology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Germany
| | - John Barr
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - Thomas Edwards
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - Paul Millner
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - Paul Vermeij
- Department Discovery & Technology, MSD Animal Health/Intervet International bv., Wim de Körverstraat 35, P.O. Box 31, 5830AA Boxmeer, the Netherlands
| | - Ad de Groof
- Department Discovery & Technology, MSD Animal Health/Intervet International bv., Wim de Körverstraat 35, P.O. Box 31, 5830AA Boxmeer, the Netherlands
| | - Volker Thiel
- Institute of Virology and Immunology, Eidgenössisches Departement des Inneren, Bern & Mittelhausern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Universität Bern, Bern, Switzerland
| | - Ronald Dijkman
- Institute of Virology and Immunology, Eidgenössisches Departement des Inneren, Bern & Mittelhausern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Universität Bern, Bern, Switzerland
| | | | - Stephen Leib
- Institute for Infectious Diseases, University of Bern, Switzerland
| | - Roger Koller
- Institute for Infectious Diseases, University of Bern, Switzerland
| | - Alban Ramette
- Institute for Infectious Diseases, University of Bern, Switzerland
| | - Olivier Engler
- Federal Office for Civil Protection, Spiez Laboratory, Biology Division, Spiez, Switzerland
| | - Christian Beuret
- Federal Office for Civil Protection, Spiez Laboratory, Biology Division, Spiez, Switzerland
| |
Collapse
|
59
|
Yinda CK, Vanhulle E, Conceição-Neto N, Beller L, Deboutte W, Shi C, Ghogomu SM, Maes P, Van Ranst M, Matthijnssens J. Gut Virome Analysis of Cameroonians Reveals High Diversity of Enteric Viruses, Including Potential Interspecies Transmitted Viruses. mSphere 2019; 4:e00585-18. [PMID: 30674646 PMCID: PMC6344602 DOI: 10.1128/msphere.00585-18] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 12/17/2018] [Indexed: 12/11/2022] Open
Abstract
Diarrhea remains one of the most common causes of deaths in children. A limited number of studies have investigated the prevalence of enteric pathogens in Cameroon, and as in many other African countries, the cause of many diarrheal episodes remains unexplained. A proportion of these unknown cases of diarrhea are likely caused by yet-unidentified viral agents, some of which could be the result of (recent) interspecies transmission from animal reservoirs, like bats. Using viral metagenomics, we screened fecal samples of 221 humans (almost all with gastroenteritis symptoms) between 0 and 89 years of age with different degrees of bat contact. We identified viruses belonging to families that are known to cause gastroenteritis such as Adenoviridae, Astroviridae, Caliciviridae, Picornaviridae, and Reoviridae Interestingly, a mammalian orthoreovirus, picobirnaviruses, a smacovirus, and a pecovirus were also found. Although there was no evidence of interspecies transmission of the most common human gastroenteritis-related viruses (Astroviridae, Caliciviridae, and Reoviridae), the phylogenies of the identified orthoreovirus, picobirnavirus, and smacovirus indicate a genetic relatedness of these viruses identified in stools of humans and those of bats and/or other animals. These findings points out the possibility of interspecies transmission or simply a shared host of these viruses (bacterial, fungal, parasitic, …) present in both animals (bats) and humans. Further screening of bat viruses in humans or vice versa will elucidate the epidemiological potential threats of animal viruses to human health. Furthermore, this study showed a huge diversity of highly divergent novel phages, thereby expanding the existing phageome considerably.IMPORTANCE Despite the availability of diagnostic tools for different enteric viral pathogens, a large fraction of human cases of gastroenteritis remains unexplained. This could be due to pathogens not tested for or novel divergent viruses of potential animal origin. Fecal virome analyses of Cameroonians showed a very diverse group of viruses, some of which are genetically related to those identified in animals. This is the first attempt to describe the gut virome of humans from Cameroon. Therefore, the data represent a baseline for future studies on enteric viral pathogens in this area and contribute to our knowledge of the world's virome. The studies also highlight the fact that more viruses may be associated with diarrhea than the typical known ones. Hence, it provides meaningful epidemiological information on diarrhea-related viruses in this area.
Collapse
Affiliation(s)
- Claude Kwe Yinda
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven-University of Leuven, Leuven, Belgium
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Emiel Vanhulle
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven-University of Leuven, Leuven, Belgium
| | - Nádia Conceição-Neto
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven-University of Leuven, Leuven, Belgium
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Leen Beller
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven-University of Leuven, Leuven, Belgium
| | - Ward Deboutte
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven-University of Leuven, Leuven, Belgium
| | - Chenyan Shi
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven-University of Leuven, Leuven, Belgium
| | - Stephen Mbigha Ghogomu
- Department of Biochemistry and Molecular Biology, Biotechnology Unit, Molecular and Cell Biology Laboratory, University of Buea, Buea, Cameroon
| | - Piet Maes
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Jelle Matthijnssens
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven-University of Leuven, Leuven, Belgium
| |
Collapse
|
60
|
Wouters Y, Keyaerts E, Rector A, Van Even E, Vissers S, Koletzki D, Pattery T, Rousseau E, Van Ranst M, Laffut W. Comparison of the Idylla™ Respiratory (IFV-RSV) panel with the GeneXpert Xpert® Flu/RSV assay: a retrospective study with nasopharyngeal and midturbinate samples. Diagn Microbiol Infect Dis 2018; 94:33-37. [PMID: 30638655 DOI: 10.1016/j.diagmicrobio.2018.11.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/28/2018] [Accepted: 11/23/2018] [Indexed: 11/15/2022]
Abstract
The objective of this study was to compare the performance of the Idylla™ Respiratory (IFV-RSV) panel to the GeneXpert Xpert® Flu/RSV assay and establish the performance of a midturbinate swab compared to nasopharyngeal sampling. Considering GeneXpert® assay as imperfect reference standard, a positive percentage agreement between both assays of 98-100% for influenza A and 96-99% for influenza B could be calculated when 354 nasopharyngeal and 325 midturbinate swabs were retrospectively analyzed. Comparing midturbinate samples to nasopharyngeal specimens of 321 subjects, positive percentage agreement varied from 42% to 94% depending on both target virus and assay used. Negative percentage agreements ranged from 98% to 100% for both methods and sample type comparison. The Idylla™ assay showed excellent performance compared to the GeneXpert® assay for the detection of influenza virus. The study also showed a slightly better performance for nasopharyngeal sampling compared to the use of a midturbinate swab.
Collapse
Affiliation(s)
- Yannick Wouters
- Department of Microbiology, Heilig Hart Hospital Lier, Mechelsestraat 24, 2500 Lier, Belgium
| | - Els Keyaerts
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Annabel Rector
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Ellen Van Even
- Department of Microbiology, Heilig Hart Hospital Lier, Mechelsestraat 24, 2500 Lier, Belgium
| | - Steven Vissers
- Department of Anaesthesiology and Reanimation, Heilig Hart Hospital Lier, Mechelsestraat 24, 2500 Lier, Belgium
| | - Diana Koletzki
- Janssen Diagnostics a division of Janssen Pharmaceutica NV, Antwerpseweg 15, 2340 Beerse, Belgium
| | - Theresa Pattery
- Janssen Diagnostics a division of Janssen Pharmaceutica NV, Antwerpseweg 15, 2340 Beerse, Belgium
| | - Els Rousseau
- Janssen Diagnostics a division of Janssen Pharmaceutica NV, Antwerpseweg 15, 2340 Beerse, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Wim Laffut
- Department of Microbiology, Heilig Hart Hospital Lier, Mechelsestraat 24, 2500 Lier, Belgium.
| |
Collapse
|
61
|
Laenen L, Vergote V, Kafetzopoulou LE, Wawina TB, Vassou D, Cook JA, Hugot JP, Deboutte W, Kang HJ, Witkowski PT, Köppen-Rung P, Krüger DH, Licková M, Stang A, Striešková L, Szemeš T, Markowski J, Hejduk J, Kafetzopoulos D, Van Ranst M, Yanagihara R, Klempa B, Maes P. A Novel Hantavirus of the European Mole, Bruges Virus, Is Involved in Frequent Nova Virus Coinfections. Genome Biol Evol 2018; 10:45-55. [PMID: 29272370 PMCID: PMC5758900 DOI: 10.1093/gbe/evx268] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2017] [Indexed: 02/06/2023] Open
Abstract
Hantaviruses are zoonotic viruses with a complex evolutionary history of virus–host coevolution and cross-species transmission. Although hantaviruses have a broad reservoir host range, virus–host relationships were previously thought to be strict, with a single virus species infecting a single host species. Here, we describe Bruges virus, a novel hantavirus harbored by the European mole (Talpa europaea), which is the well-known host of Nova virus. Phylogenetic analyses of all three genomic segments showed tree topology inconsistencies, suggesting that Bruges virus has emerged from cross-species transmission and ancient reassortment events. A high number of coinfections with Bruges and Nova viruses was detected, but no evidence was found for reassortment between these two hantaviruses. These findings highlight the complexity of hantavirus evolution and the importance of further investigation of hantavirus–reservoir relationships.
Collapse
Affiliation(s)
- Lies Laenen
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Valentijn Vergote
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Liana Eleni Kafetzopoulou
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Tony Bokalanga Wawina
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Despoina Vassou
- Genomics Facility, Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas (IMBB-FORTH), Heraklion, Greece
| | - Joseph A Cook
- Department of Biology, Museum of Southwestern Biology, University of New Mexico
| | - Jean-Pierre Hugot
- Department of Systematics and Evolution, L'Institut de Systématique, Évolution, Biodiversité, Muséum National d'Histoire Naturelle, Paris, France
| | - Ward Deboutte
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Hae Ji Kang
- Department of Pediatrics, and Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa
| | - Peter T Witkowski
- Charité School of Medicine, Institute of Medical Virology, Berlin, Germany
| | - Panja Köppen-Rung
- Charité School of Medicine, Institute of Medical Virology, Berlin, Germany
| | - Detlev H Krüger
- Charité School of Medicine, Institute of Medical Virology, Berlin, Germany
| | - Martina Licková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Alexander Stang
- Department of Molecular and Medical Virology, Ruhr-University Bochum, Germany
| | - Lucia Striešková
- Department of Molecular Biology, Comenius University, Bratislava, Slovakia
| | - Tomáš Szemeš
- Department of Molecular Biology, Comenius University, Bratislava, Slovakia
| | - Janusz Markowski
- Department of Teacher Training and Biodiversity Studies, Faculty of Biology and Environmental Protection, University of Lódz, Poland
| | - Janusz Hejduk
- Department of Teacher Training and Biodiversity Studies, Faculty of Biology and Environmental Protection, University of Lódz, Poland
| | - Dimitris Kafetzopoulos
- Genomics Facility, Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas (IMBB-FORTH), Heraklion, Greece
| | - Marc Van Ranst
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Belgium
| | - Richard Yanagihara
- Department of Pediatrics, and Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, University of Hawaii at Manoa
| | - Boris Klempa
- Charité School of Medicine, Institute of Medical Virology, Berlin, Germany.,Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Piet Maes
- Laboratory of Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Belgium
| |
Collapse
|
62
|
Bucciol G, Moens L, Payne K, Wollants E, Mekahli D, Levtchenko E, Vermeulen F, Tousseyn T, Gray P, Ma CS, Tangye SG, Van Ranst M, Brown JR, Breuer J, Meyts I. Chronic Aichi Virus Infection in a Patient with X-Linked Agammaglobulinemia. J Clin Immunol 2018; 38:748-752. [DOI: 10.1007/s10875-018-0558-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 10/02/2018] [Indexed: 01/20/2023]
|
63
|
Affiliation(s)
- Mahmoud Reza Pourkarim
- Katholieke Universiteit Leuven, Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Leuven 3000, Belgium.
| | - Homi Razavi
- Center for Disease Analysis Foundation, Lafayette, CO, USA
| | - Philippe Lemey
- Katholieke Universiteit Leuven, Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Leuven 3000, Belgium
| | - Marc Van Ranst
- Katholieke Universiteit Leuven, Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Leuven 3000, Belgium
| |
Collapse
|
64
|
Abstract
Monkeypox is an emerging zoonotic disease recognized as the most important orthopoxvirus infection in humans in the smallpox post-eradication era. The clinical presentation of monkeypox is similar to the one of smallpox. The case fatality rate of monkeypox (10%) lies between the case fatality rate of variola major (30%) and variola minor (1%). The disease is endemic in the Democratic Republic of the Congo, but other countries of Central and West Africa either reported cases of monkeypox in humans or circulation in wildlife. The disease was also imported once into the USA. The disease has always been considered rare and self-limiting, however recent sporadic reports suggest otherwise. Unfortunately, the collected data is limited, dispersed and often incomplete. Therefore, the objective of this review is to trace all reported human monkeypox outbreaks and relevant epidemiological information. The frequency and geographical spread of human monkeypox cases have increased in recent years, and there are huge gaps in our understanding of the disease's emergence, epidemiology, and ecology. The monkeypox virus is considered a high threat pathogen causing a disease of public health importance. Therefore, there is an urgent need to focus on building surveillance capacities which will provide valuable information for designing appropriate prevention, preparedness and response activities.
Collapse
Affiliation(s)
- Nikola Sklenovská
- Laboratory of Clinical Virology, Department of Microbiology & Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical Virology, Department of Microbiology & Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| |
Collapse
|
65
|
Desmet S, Verhaegen J, Van Ranst M, Peetermans W, Lagrou K. Switch in a childhood pneumococcal vaccination programme from PCV13 to PCV10: a defendable approach? The Lancet Infectious Diseases 2018; 18:830-831. [DOI: 10.1016/s1473-3099(18)30346-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 05/09/2018] [Accepted: 05/14/2018] [Indexed: 10/28/2022]
|
66
|
Conceição-Neto N, Deboutte W, Dierckx T, Machiels K, Wang J, Yinda KC, Maes P, Van Ranst M, Joossens M, Raes J, Vermeire S, Matthijnssens J. Low eukaryotic viral richness is associated with faecal microbiota transplantation success in patients with UC. Gut 2018; 67:1558-1559. [PMID: 29066574 PMCID: PMC6204959 DOI: 10.1136/gutjnl-2017-315281] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 09/18/2017] [Accepted: 10/02/2017] [Indexed: 12/08/2022]
Affiliation(s)
- Nádia Conceição-Neto
- Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Viral Metagenomics, Rega Institute, Leuven, Belgium,Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Clinical Virology, Rega Institute, Leuven, Belgium
| | - Ward Deboutte
- Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Viral Metagenomics, Rega Institute, Leuven, Belgium
| | - Tim Dierckx
- Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Clinical Virology, Rega Institute, Leuven, Belgium
| | - Kathleen Machiels
- Translational Research Center for Gastrointestinal Disorders (TARGID), University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Jun Wang
- Department of Microbiology and Immunology, KU Leuven - University of Leuven, Laboratory of Molecular Bacteriology, Rega Institute, Leuven, Belgium,Center for Microbiology, VIB, Leuven, Belgium
| | - Kwe Claude Yinda
- Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Viral Metagenomics, Rega Institute, Leuven, Belgium,Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Clinical Virology, Rega Institute, Leuven, Belgium
| | - Piet Maes
- Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Clinical Virology, Rega Institute, Leuven, Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Clinical Virology, Rega Institute, Leuven, Belgium
| | - Marie Joossens
- Department of Microbiology and Immunology, KU Leuven - University of Leuven, Laboratory of Molecular Bacteriology, Rega Institute, Leuven, Belgium,Center for Microbiology, VIB, Leuven, Belgium
| | - Jeroen Raes
- Department of Microbiology and Immunology, KU Leuven - University of Leuven, Laboratory of Molecular Bacteriology, Rega Institute, Leuven, Belgium,Center for Microbiology, VIB, Leuven, Belgium
| | - Séverine Vermeire
- Translational Research Center for Gastrointestinal Disorders (TARGID), University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Jelle Matthijnssens
- Department of Microbiology and Immunology, KU Leuven—University of Leuven, Laboratory of Viral Metagenomics, Rega Institute, Leuven, Belgium
| |
Collapse
|
67
|
Desmet S, Nepal S, van Dijl JM, Van Ranst M, Chlebowicz MA, Rossen JW, Van Houdt JKJ, Maes P, Lagrou K, Bathoorn E. Antibiotic Resistance Plasmids Cointegrated into a Megaplasmid Harboring the blaOXA-427 Carbapenemase Gene. Antimicrob Agents Chemother 2018; 62:e01448-17. [PMID: 29311088 PMCID: PMC5826099 DOI: 10.1128/aac.01448-17] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 12/21/2017] [Indexed: 11/20/2022] Open
Abstract
OXA-427 is a new class D carbapenemase encountered in different species of Enterobacteriaceae in a Belgian hospital. To study the dispersal of this gene, we performed a comparative analysis of two plasmids containing the blaOXA-427 gene, isolated from a Klebsiella pneumoniae strain and an Enterobacter cloacae complex strain. The two IncA/C2 plasmids containing blaOXA-427 share the same backbone; in the K. pneumoniae strain, however, this plasmid is cointegrated into an IncFIb plasmid, forming a 321-kb megaplasmid with multiple multiresistance regions.
Collapse
Affiliation(s)
- Stefanie Desmet
- Department of Microbiology and Immunology, Laboratory of Clinical Bacteriology and Mycology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Suruchi Nepal
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology, Groningen, The Netherlands
| | - Jan Maarten van Dijl
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology, Groningen, The Netherlands
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Laboratory of Clinical Bacteriology and Epidemiological Virology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Monika A Chlebowicz
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology, Groningen, The Netherlands
| | - John W Rossen
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology, Groningen, The Netherlands
| | - Jeroen K J Van Houdt
- Centre for Human Genetics, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Piet Maes
- Department of Microbiology and Immunology, Laboratory of Clinical Bacteriology and Epidemiological Virology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Katrien Lagrou
- Department of Microbiology and Immunology, Laboratory of Clinical Bacteriology and Mycology, KU Leuven-University of Leuven, Leuven, Belgium
| | - Erik Bathoorn
- University of Groningen, University Medical Center Groningen, Department of Medical Microbiology, Groningen, The Netherlands
| |
Collapse
|
68
|
Yinda CK, Ghogomu SM, Conceição-Neto N, Beller L, Deboutte W, Vanhulle E, Maes P, Van Ranst M, Matthijnssens J. Cameroonian fruit bats harbor divergent viruses, including rotavirus H, bastroviruses, and picobirnaviruses using an alternative genetic code. Virus Evol 2018; 4:vey008. [PMID: 29644096 PMCID: PMC5888411 DOI: 10.1093/ve/vey008] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Most human emerging infectious diseases originate from wildlife and bats are a major reservoir of viruses, a few of which have been highly pathogenic to humans. In some regions of Cameroon, bats are hunted and eaten as a delicacy. This close proximity between human and bats provides ample opportunity for zoonotic events. To elucidate the viral diversity of Cameroonian fruit bats, we collected and metagenomically screened eighty-seven fecal samples of Eidolon helvum and Epomophorus gambianus fruit bats. The results showed a plethora of known and novel viruses. Phylogenetic analyses of the eleven gene segments of the first complete bat rotavirus H genome, showed clearly separated clusters of human, porcine, and bat rotavirus H strains, not indicating any recent interspecies transmission events. Additionally, we identified and analyzed a bat bastrovirus genome (a novel group of recently described viruses, related to astroviruses and hepatitis E viruses), confirming their recombinant nature, and provide further evidence of additional recombination events among bat bastroviruses. Interestingly, picobirnavirus-like RNA-dependent RNA polymerase gene segments were identified using an alternative mitochondrial genetic code, and further principal component analyses suggested that they may have a similar lifestyle to mitoviruses, a group of virus-like elements known to infect the mitochondria of fungi. Although identified bat coronavirus, parvovirus, and cyclovirus strains belong to established genera, most of the identified partitiviruses and densoviruses constitute putative novel genera in their respective families. Finally, the results of the phage community analyses of these bats indicate a very diverse geographically distinct bat phage population, probably reflecting different diets and gut bacterial ecosystems.
Collapse
Affiliation(s)
- Claude Kwe Yinda
- Laboratory of Viral Metagenomics
- Laboratory for Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, B-3000 Leuven, Belgium
| | - Stephen Mbigha Ghogomu
- Molecular and Cell Biology Laboratory, Biotechnology Unit, Department of Biochemistry and Molecular Biology, University of Buea, Buea, 237, Cameroon
| | - Nádia Conceição-Neto
- Laboratory of Viral Metagenomics
- Laboratory for Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, B-3000 Leuven, Belgium
| | | | | | | | - Piet Maes
- Laboratory for Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, B-3000 Leuven, Belgium
| | - Marc Van Ranst
- Laboratory for Clinical and Epidemiological Virology, Department of Microbiology and Immunology, Rega Institute, KU Leuven – University of Leuven, B-3000 Leuven, Belgium
| | | |
Collapse
|
69
|
Conceição-Neto N, Yinda KC, Van Ranst M, Matthijnssens J. NetoVIR: Modular Approach to Customize Sample Preparation Procedures for Viral Metagenomics. Methods Mol Biol 2018; 1838:85-95. [PMID: 30128991 DOI: 10.1007/978-1-4939-8682-8_7] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The democratization of next-generation sequencing (NGS) technologies has enabled scientists to explore the diversity of microbial life in various ecological niches in an unpreceded depth. The role of viruses as a key player in health and disease is becoming increasingly clear. To address the need for an up scalable, reproducible protocol to purify RNA and DNA viruses from a sample, we describe our optimized method. The Novel Enrichment Technique Of Viromes (NetoVIR) allows researchers to attain a fast, reproducible, and high-throughput sample preparation protocol for NGS gut viromics studies. With appropriate prior homogenization steps, this protocol can be extended to any biological samples.
Collapse
Affiliation(s)
- Nádia Conceição-Neto
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium.,Laboratory of Clinical Virology, Department of Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium
| | - Kwe Claude Yinda
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium.,Laboratory of Clinical Virology, Department of Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical Virology, Department of Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium
| | - Jelle Matthijnssens
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium.
| |
Collapse
|
70
|
Vergote V, Laenen L, Vanmechelen B, Van Ranst M, Verbeken E, Hooper JW, Maes P. A lethal disease model for New World hantaviruses using immunosuppressed Syrian hamsters. PLoS Negl Trop Dis 2017; 11:e0006042. [PMID: 29077702 PMCID: PMC5678717 DOI: 10.1371/journal.pntd.0006042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/08/2017] [Accepted: 10/16/2017] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Hantavirus, the hemorrhagic causative agent of two clinical diseases, is found worldwide with variation in severity, incidence and mortality. The most lethal hantaviruses are found on the American continent where the most prevalent viruses like Andes virus and Sin Nombre virus are known to cause hantavirus pulmonary syndrome. New World hantavirus infection of immunocompetent hamsters results in an asymptomatic infection except for Andes virus and Maporal virus; the only hantaviruses causing a lethal disease in immunocompetent Syrian hamsters mimicking hantavirus pulmonary syndrome in humans. METHODOLOGY/PRINCIPAL FINDINGS Hamsters, immunosuppressed with dexamethasone and cyclophosphamide, were infected intramuscularly with different New World hantavirus strains (Bayou virus, Black Creek Canal virus, Caño Delgadito virus, Choclo virus, Laguna Negra virus, and Maporal virus). In the present study, we show that immunosuppression of hamsters followed by infection with a New World hantavirus results in an acute disease that precisely mimics both hantavirus disease in humans and Andes virus infection of hamsters. CONCLUSIONS/ SIGNIFICANCE Infected hamsters showed specific clinical signs of disease and moreover, histological analysis of lung tissue showed signs of pulmonary edema and inflammation within alveolar septa. In this study, we were able to infect immunosuppressed hamsters with different New World hantaviruses reaching a lethal outcome with signs of disease mimicking human disease.
Collapse
Affiliation(s)
- Valentijn Vergote
- KU Leuven–University of Leuven, Department of Microbiology and Immunology, Laboratory of Clinical Virology, Zoonotic Infectious Diseases unit, Leuven, Belgium
| | - Lies Laenen
- KU Leuven–University of Leuven, Department of Microbiology and Immunology, Laboratory of Clinical Virology, Zoonotic Infectious Diseases unit, Leuven, Belgium
| | - Bert Vanmechelen
- KU Leuven–University of Leuven, Department of Microbiology and Immunology, Laboratory of Clinical Virology, Zoonotic Infectious Diseases unit, Leuven, Belgium
| | - Marc Van Ranst
- KU Leuven–University of Leuven, Department of Microbiology and Immunology, Laboratory of Clinical Virology, Zoonotic Infectious Diseases unit, Leuven, Belgium
| | - Erik Verbeken
- KU Leuven–University of Leuven, Department of Imaging & Pathology, Translational Cell and Tissue Research, Leuven, Belgium
| | - Jay W. Hooper
- Department of Molecular Virology, Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | - Piet Maes
- KU Leuven–University of Leuven, Department of Microbiology and Immunology, Laboratory of Clinical Virology, Zoonotic Infectious Diseases unit, Leuven, Belgium
- * E-mail:
| |
Collapse
|
71
|
Conceição-Neto N, Theuns S, Cui T, Zeller M, Yinda CK, Christiaens I, Heylen E, Van Ranst M, Carpentier S, Nauwynck HJ, Matthijnssens J. Identification of an enterovirus recombinant with a torovirus-like gene insertion during a diarrhea outbreak in fattening pigs. Virus Evol 2017; 3:vex024. [PMID: 28924489 PMCID: PMC5591953 DOI: 10.1093/ve/vex024] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Diarrhea outbreaks in pig farms have raised major concerns in Europe and USA, as they can lead to dramatic pig losses. During a suspected outbreak in Belgium of porcine epidemic diarrhea virus (PEDV), we performed viral metagenomics to assess other potential viral pathogens. Although PEDV was detected, its low abundance indicated that other viruses were involved in the outbreak. Interestingly, a porcine bocavirus and several enteroviruses were most abundant in the sample. We also observed the presence of a porcine enterovirus genome with a gene insertion, resembling a C28 peptidase gene found in toroviruses, which was confirmed using re-sequencing, bioinformatics, and proteomics approaches. Moreover, the predicted cleavage sites for the insertion suggest that this gene was being expressed as a single protein, rather than a fused protein. Recombination in enteroviruses has been reported as a major mechanism to generate genetic diversity, but gene insertions across viral families are rather uncommon. Although such inter-family recombinations are rare, our finding suggests that these events may significantly contribute to viral evolution.
Collapse
Affiliation(s)
- Nádia Conceição-Neto
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium.,Laboratory of Clinical Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium
| | - Sebastiaan Theuns
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium
| | - Tingting Cui
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium
| | - Mark Zeller
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium
| | - Claude Kwe Yinda
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium.,Laboratory of Clinical Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium
| | - Isaura Christiaens
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium
| | - Elisabeth Heylen
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical Virology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium
| | - Sebastien Carpentier
- Laboratory of Tropical Crop Improvement, Division of Crop Biotechnics, KU Leuven - University of Leuven, B-3000 Leuven, Belgium.,Facility for Systems Biology Based Mass Spectrometry (SYBIOMA), KU Leuven - University of Leuven, B-3000 Leuven, Belgium
| | - Hans J Nauwynck
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium
| | - Jelle Matthijnssens
- Laboratory of Viral Metagenomics, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven - University of Leuven, B-3000 Leuven, Belgium
| |
Collapse
|
72
|
Ramaekers K, Keyaerts E, Rector A, Borremans A, Beuselinck K, Lagrou K, Van Ranst M. Prevalence and seasonality of six respiratory viruses during five consecutive epidemic seasons in Belgium. J Clin Virol 2017; 94:72-78. [PMID: 28772168 DOI: 10.1016/j.jcv.2017.07.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 07/04/2017] [Accepted: 07/19/2017] [Indexed: 01/14/2023]
Abstract
BACKGROUND Acute Respiratory Infections (ARIs) are a major health problem, especially in young children and the elderly. OBJECTIVES Insights into the seasonality of respiratory viruses can help us understand when the burden on society is highest and which age groups are most vulnerable. STUDY DESIGN We monitored six respiratory viruses during five consecutive seasons (2011-2016) in Belgium. Patient specimens (n=22876), tested for one or more of the following respiratory viruses, were included in this analysis: Influenza viruses (IAV & IBV), Human respiratory syncytial virus (hRSV), Human metapneumovirus (hMPV), Adenovirus (ADV) and Human parainfluenza virus (hPIV). Data were analysed for four age categories: <6y, 6-17y, 18-64y and ≥65y. RESULTS Children <6y had the highest infection rates (39% positive vs. 20% positive adults) and the highest frequency of co-infections. hRSV (28%) and IAV (32%) caused the most common respiratory viral infections and followed, like hMPV, a seasonal pattern with winter peaks. hRSV followed an annual pattern with two peaks: first in young children and ±7 weeks later in elderly. This phenomenon has not been described in literature so far. hPIV and ADV occurred throughout the year with higher rates in winter. CONCLUSIONS Children <6y are most vulnerable for respiratory viral infections and have a higher risk for co-infections. hRSV and IAV are the most common respiratory infections with peaks during the winter season in Belgium.
Collapse
Affiliation(s)
- Kaat Ramaekers
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven. Herestraat 49 box 1040, BE-3000 Leuven, Belgium.
| | - Els Keyaerts
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven. Herestraat 49 box 1040, BE-3000 Leuven, Belgium; University Hospitals Leuven, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Annabel Rector
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven. Herestraat 49 box 1040, BE-3000 Leuven, Belgium.
| | - Annie Borremans
- University Hospitals Leuven, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Kurt Beuselinck
- University Hospitals Leuven, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Katrien Lagrou
- University Hospitals Leuven, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Marc Van Ranst
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven. Herestraat 49 box 1040, BE-3000 Leuven, Belgium; University Hospitals Leuven, Herestraat 49, BE-3000 Leuven, Belgium.
| |
Collapse
|
73
|
Conceição‐Neto N, Godinho R, Álvares F, Yinda CK, Deboutte W, Zeller M, Laenen L, Heylen E, Roque S, Petrucci‐Fonseca F, Santos N, Van Ranst M, Mesquita JR, Matthijnssens J. Viral gut metagenomics of sympatric wild and domestic canids, and monitoring of viruses: Insights from an endangered wolf population. Ecol Evol 2017; 7:4135-4146. [PMID: 28649326 PMCID: PMC5478050 DOI: 10.1002/ece3.2991] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/15/2017] [Accepted: 03/21/2017] [Indexed: 12/13/2022] Open
Abstract
Animal host-microbe interactions are a relevant concern for wildlife conservation, particularly regarding generalist pathogens, where domestic host species can play a role in the transmission of infectious agents, such as viruses, to wild animals. Knowledge on viral circulation in wild host species is still scarce and can be improved by the recent advent of modern molecular approaches. We aimed to characterize the fecal virome and identify viruses of potential conservation relevance of diarrheic free-ranging wolves and sympatric domestic dogs from Central Portugal, where a small and threatened wolf population persists in a highly anthropogenically modified landscape. Using viral metagenomics, we screened diarrheic stools collected from wolves (n = 8), feral dogs (n = 4), and pet dogs (n = 6), all collected within wolf range. We detected novel highly divergent viruses as well as known viral pathogens with established effects on population dynamics, including canine distemper virus, a novel bocavirus, and canine minute virus. Furthermore, we performed a 4-year survey for the six wolf packs comprising this endangered wolf population, screening 93 fecal samples from 36 genetically identified wolves for canine distemper virus and the novel bocavirus, previously identified using our metagenomics approach. Our novel approach using metagenomics for viral screening in noninvasive samples of wolves and dogs has profound implications on the knowledge of both virology and wildlife diseases, establishing a complementary tool to traditional screening methods for the conservation of threatened species.
Collapse
Affiliation(s)
- Nádia Conceição‐Neto
- Department of Microbiology and ImmunologyLaboratory of Viral MetagenomicsRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
- Department of Microbiology and ImmunologyLaboratory of Clinical VirologyRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| | - Raquel Godinho
- CIBIO/InBIOCentro de Investigação em Biodiversidade e Recursos GenéticosUniversidade do PortoVairãoPortugal
- Departamento de BiologiaFaculdade de CiênciasUniversidade do PortoPortoPortugal
| | - Francisco Álvares
- CIBIO/InBIOCentro de Investigação em Biodiversidade e Recursos GenéticosUniversidade do PortoVairãoPortugal
| | - Claude K. Yinda
- Department of Microbiology and ImmunologyLaboratory of Viral MetagenomicsRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
- Department of Microbiology and ImmunologyLaboratory of Clinical VirologyRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| | - Ward Deboutte
- Department of Microbiology and ImmunologyLaboratory of Viral MetagenomicsRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| | - Mark Zeller
- Department of Microbiology and ImmunologyLaboratory of Viral MetagenomicsRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| | - Lies Laenen
- Department of Microbiology and ImmunologyLaboratory of Clinical VirologyRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| | - Elisabeth Heylen
- Department of Microbiology and ImmunologyLaboratory of Viral MetagenomicsRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| | - Sara Roque
- cE3c, Centre for Ecology, Evolution and Environmental ChangesFaculdade de Ciências da Universidade de LisboaLisbonPortugal
- Departamento de Biologia AnimalGrupo LoboFaculdade de Ciências da Universidade de LisboaLisbonPortugal
| | - Francisco Petrucci‐Fonseca
- cE3c, Centre for Ecology, Evolution and Environmental ChangesFaculdade de Ciências da Universidade de LisboaLisbonPortugal
- Departamento de Biologia AnimalGrupo LoboFaculdade de Ciências da Universidade de LisboaLisbonPortugal
| | - Nuno Santos
- CIBIO/InBIOCentro de Investigação em Biodiversidade e Recursos GenéticosUniversidade do PortoVairãoPortugal
| | - Marc Van Ranst
- Department of Microbiology and ImmunologyLaboratory of Clinical VirologyRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| | - João R. Mesquita
- CIBIO/InBIOCentro de Investigação em Biodiversidade e Recursos GenéticosUniversidade do PortoVairãoPortugal
- Department of Zootechnics, Rural Engineering and VeterinaryAgrarian Superior School of ViseuViseuPortugal
| | - Jelle Matthijnssens
- Department of Microbiology and ImmunologyLaboratory of Viral MetagenomicsRega Institute for Medical ResearchKU Leuven – University of LeuvenLeuvenBelgium
| |
Collapse
|
74
|
van Hoeve K, Vandermeulen C, Van Ranst M, Levtchenko E, van den Heuvel L, Mekahli D. Occurrence of atypical HUS associated with influenza B. Eur J Pediatr 2017; 176:449-454. [PMID: 28110418 DOI: 10.1007/s00431-017-2856-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 12/29/2016] [Accepted: 01/10/2017] [Indexed: 12/27/2022]
Abstract
UNLABELLED Hemolytic uremic syndrome (HUS) is a disease characterized by thrombotic microangiopathy with a triad of non-immune hemolytic anemia, thrombocytopenia, and renal impairment. Approximately 10% of cases of HUS are classified as atypical (aHUS). While today many genetically forms of aHUS pathology are known, only about 50% of carriers precipitate the disease. The reason remains unclear, and triggering events like intercurrent infections have been postulated. In rare cases, influenza A is the known trigger of aHUS; however, no cases of influenza B have been reported. CONCLUSION We describe for the first time that influenza B strain as a trigger for aHUS in children with primary hereditary forms. We also showed in our three cases that immunization appears to be safe; however, this needs to be confirmed in a larger cohort. What is Known: • Known triggers of aHUS are infectious specimen. • Influenza A-associated aHUS cases are rarely published. What is New: • aHUS can be triggered by influenza B virus infection. • Influenza vaccination of patients with aHUS appears safe.
Collapse
Affiliation(s)
- Karen van Hoeve
- Department of Pediatric Nephrology, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Corinne Vandermeulen
- University Vaccinology Center, KU Leuven - University of Leuven, 3000, Leuven, Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, KU Leuven - Rega Institute, 3000, Leuven, Belgium
| | - Elena Levtchenko
- Department of Pediatric Nephrology, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium.,Laboratory of Pediatrics, KU Leuven - University of Leuven, 3000, Leuven, Belgium
| | | | - Djalila Mekahli
- Department of Pediatric Nephrology, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium.,Laboratory of Pediatrics, KU Leuven - University of Leuven, 3000, Leuven, Belgium
| |
Collapse
|
75
|
Yinda CK, Zell R, Deboutte W, Zeller M, Conceição-Neto N, Heylen E, Maes P, Knowles NJ, Ghogomu SM, Van Ranst M, Matthijnssens J. Highly diverse population of Picornaviridae and other members of the Picornavirales, in Cameroonian fruit bats. BMC Genomics 2017; 18:249. [PMID: 28335731 PMCID: PMC5364608 DOI: 10.1186/s12864-017-3632-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 03/16/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The order Picornavirales represents a diverse group of positive-stranded RNA viruses with small non-enveloped icosahedral virions. Recently, bats have been identified as an important reservoir of several highly pathogenic human viruses. Since many members of the Picornaviridae family cause a wide range of diseases in humans and animals, this study aimed to characterize members of the order Picornavirales in fruit bat populations located in the Southwest region of Cameroon. These bat populations are frequently in close contact with humans due to hunting, selling and eating practices, which provides ample opportunity for interspecies transmissions. RESULTS Fecal samples from 87 fruit bats (Eidolon helvum and Epomophorus gambianus), were combined into 25 pools and analyzed using viral metagenomics. In total, Picornavirales reads were found in 19 pools, and (near) complete genomes of 11 picorna-like viruses were obtained from 7 of these pools. The picorna-like viruses possessed varied genomic organizations (monocistronic or dicistronic), and arrangements of gene cassettes. Some of the viruses belonged to established families, including the Picornaviridae, whereas others clustered distantly from known viruses and most likely represent novel genera and families. Phylogenetic and nucleotide composition analyses suggested that mammals were the likely host species of bat sapelovirus, bat kunsagivirus and bat crohivirus, whereas the remaining viruses (named bat iflavirus, bat posalivirus, bat fisalivirus, bat cripavirus, bat felisavirus, bat dicibavirus and bat badiciviruses 1 and 2) were most likely diet-derived. CONCLUSION The existence of a vast genetic variability of picorna-like viruses in fruit bats may increase the probability of spillover infections to humans especially when humans and bats have direct contact as the case in this study site. However, further screening for these viruses in humans will fully indicate their zoonotic potential.
Collapse
Affiliation(s)
- Claude Kwe Yinda
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven - University of Leuven, Leuven, Belgium
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven - University of Leuven, Leuven, Belgium
| | - Roland Zell
- Department of Virology and Antiviral Therapy, Jena University Hospital, Friedrich Schiller University, Jena, Germany
| | - Ward Deboutte
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven - University of Leuven, Leuven, Belgium
| | - Mark Zeller
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven - University of Leuven, Leuven, Belgium
| | - Nádia Conceição-Neto
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven - University of Leuven, Leuven, Belgium
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven - University of Leuven, Leuven, Belgium
| | - Elisabeth Heylen
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven - University of Leuven, Leuven, Belgium
| | - Piet Maes
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven - University of Leuven, Leuven, Belgium
| | - Nick J. Knowles
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey GU24 0NF UK
| | - Stephen Mbigha Ghogomu
- Department of Biochemistry and Molecular Biology, Biotechnology Unit, Molecular and cell biology laboratory, University of Buea, Buea, Cameroon
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, KU Leuven - University of Leuven, Leuven, Belgium
| | - Jelle Matthijnssens
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, KU Leuven - University of Leuven, Leuven, Belgium
| |
Collapse
|
76
|
Mina T, Amini-Bavil-Olyaee S, Shirvani-Dastgerdi E, Trovão NS, Van Ranst M, Pourkarim MR. 15year fulminant hepatitis B follow-up in Belgium: Viral evolution and signature of demographic change. Infect Genet Evol 2017; 49:221-225. [PMID: 28119028 DOI: 10.1016/j.meegid.2017.01.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 01/09/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
Abstract
Fulminant hepatitis among different clinical outcomes of hepatitis B virus infection is very rare and manifests high mortality rate, however it has not been investigated in Belgian inhabitants yet. In the frame of a retrospective study between 1995 and 2010, 80 serum samples (in some cases serial samples) archived in Biobank, were collected from 24 patients who had clinically developed fulminant infection of hepatitis B virus. In total, 33 hepatitis B virus (HBV) strains (31 full-length genome and 2 partial viral genes) of different HBV genotypes and subgenotypes including A2, B2, D1, D2, D3 and E, were amplified, sequenced and phylogenetically analyzed. HBV isolated strains from native and exotic patients were characterized by genome variations associated with viral invasiveness. Although several mutations at nucleotide and protein levels were detected, evolutionary analyses revealed a negative selective pressure over the viral genomes. This study revealed influence of immigration through a steady change in the viral epidemiological profile of the Belgian population.
Collapse
Affiliation(s)
- Thomas Mina
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, 3000 Leuven, Belgium; Nonis Mina Clinical Laboratory, 5 Gregori Afxentiou, Iocasti Court Block A, Flat 22 Mesa Yitonia, 4003 Lemesos, Cyprus
| | - Samad Amini-Bavil-Olyaee
- Biosafety Development Group, Cellular Sciences Department, Amgen Inc., One Amgen Center Drive, Thousand Oaks, CA 91320, USA
| | - Elham Shirvani-Dastgerdi
- Department of Medicine III, RWTH-University Hospital Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Nídia Sequeira Trovão
- KU Lreuven, Department of Microbiology and Immunology, Laboratory Evolutionary and Computational Virology, 3000 Leuven, Belgium
| | - Marc Van Ranst
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, 3000 Leuven, Belgium
| | - Mahmoud Reza Pourkarim
- KU Leuven, Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, 3000 Leuven, Belgium; Blood Transfusion Research Centre, High Institute for Research and Education in Transfusion Medicine, Hemmat Exp. Way, 14665-1157 Tehran, Iran.
| |
Collapse
|
77
|
Zeller M, Heylen E, Tamim S, McAllen JK, Kirkness EF, Akopov A, De Coster S, Van Ranst M, Matthijnssens J. Comparative analysis of the Rotarix™ vaccine strain and G1P[8] rotaviruses detected before and after vaccine introduction in Belgium. PeerJ 2017; 5:e2733. [PMID: 28070453 PMCID: PMC5214804 DOI: 10.7717/peerj.2733] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 10/28/2016] [Indexed: 02/04/2023] Open
Abstract
G1P[8] rotaviruses are responsible for the majority of human rotavirus infections worldwide. The effect of universal mass vaccination with rotavirus vaccines on circulating G1P[8] rotaviruses is still poorly understood. Therefore we analyzed the complete genomes of the Rotarix™ vaccine strain, and 70 G1P[8] rotaviruses, detected between 1999 and 2010 in Belgium (36 before and 34 after vaccine introduction) to investigate the impact of rotavirus vaccine introduction on circulating G1P[8] strains. All rotaviruses possessed a complete Wa-like genotype constellation, but frequent intra-genogroup reassortments were observed as well as multiple different cluster constellations circulating in a single season. In addition, identical cluster constellations were found to circulate persistently over multiple seasons. The Rotarix™ vaccine strain possessed a unique cluster constellation that was not present in currently circulating G1P[8] strains. At the nucleotide level, the VP6, VP2 and NSP2 gene segments of Rotarix™ were relatively distantly related to any Belgian G1P[8] strain, but other gene segments of Rotarix™ were found in clusters also containing circulating Belgian strains. At the amino acid level, the genetic distance between Rotarix™ and circulating Belgian strains was considerably lower, except for NSP1. When we compared the Belgian G1P[8] strains collected before and after vaccine introduction a reduction in the proportion of strains that were found in the same cluster as the Rotarix™ vaccine strain was observed for most gene segments. The reduction in the proportion of strains belonging to the same cluster may be the result of the vaccine introduction, although natural fluctuations cannot be ruled out.
Collapse
Affiliation(s)
- Mark Zeller
- Department of Microbiology and Immunology, Katholieke Universiteit Leuven , Leuven , Belgium
| | - Elisabeth Heylen
- Department of Microbiology and Immunology, Katholieke Universiteit Leuven , Leuven , Belgium
| | - Sana Tamim
- Department of Microbiology, Quaid-i-Azam University , Islamabad , Pakistan
| | | | | | - Asmik Akopov
- The J. Craig Venter Institute , Rockville , MD , USA
| | - Sarah De Coster
- Department of Microbiology and Immunology, Katholieke Universiteit Leuven , Leuven , Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Katholieke Universiteit Leuven , Leuven , Belgium
| | - Jelle Matthijnssens
- Department of Microbiology and Immunology, Katholieke Universiteit Leuven , Leuven , Belgium
| |
Collapse
|
78
|
Zeller M, Nuyts V, Heylen E, De Coster S, Conceição-Neto N, Van Ranst M, Matthijnssens J. Emergence of human G2P[4] rotaviruses containing animal derived gene segments in the post-vaccine era. Sci Rep 2016; 6:36841. [PMID: 27841357 PMCID: PMC5107926 DOI: 10.1038/srep36841] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 10/19/2016] [Indexed: 11/30/2022] Open
Abstract
The introduction of Rotarix into the Belgian immunization program in June 2006 coincided with an increase of the relative prevalence of G2P[4] strains. However, the genetic composition of these persistent G2P[4] strains has not been investigated. Therefore, we have investigated the NSP4 gene of 89 Belgian G2P[4] strains detected between 1999 and 2013, covering both pre- and post-vaccination periods. The NSP4 genes were divided over seven separate clusters of which six were more closely related to animal than to human strains. The NSP4 genes that clustered more closely to animal DS-1-like strains were isolated after 2004–2005 and were found throughout multiple seasons. Complete genome sequencing of 28 strains identified several other gene segments that clustered more closely to animal than to human DS-1-like strains. These findings suggest that frequent interspecies reassortments may have played a role in the spread of G2P[4] rotaviruses in the post-vaccination period in Belgium.
Collapse
Affiliation(s)
- Mark Zeller
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Valerie Nuyts
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Elisabeth Heylen
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Sarah De Coster
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Nádia Conceição-Neto
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium.,KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research, Leuven, Belgium
| | - Marc Van Ranst
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Jelle Matthijnssens
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium.,KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research, Leuven, Belgium
| |
Collapse
|
79
|
Bouzas ML, Oliveira JR, Fukutani KF, Borges IC, Barral A, Van der Gucht W, Wollants E, Van Ranst M, de Oliveira CI, Van Weyenbergh J, Nascimento-Carvalho CM. Respiratory syncytial virus a and b display different temporal patterns in a 4-year prospective cross-sectional study among children with acute respiratory infection in a tropical city. Medicine (Baltimore) 2016; 95:e5142. [PMID: 27741144 PMCID: PMC5072971 DOI: 10.1097/md.0000000000005142] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Respiratory syncytial virus (RSV) is one of the most common etiological agents of childhood respiratory infections globally. Information on seasonality of different antigenic groups is scarce. We aimed to describe the frequency, seasonality, and age of children infected by RSV antigenic groups A (RSVA) and B (RSVB) among children with ARI in a 4-year period.Children (6-23 months old) with respiratory infection for ≤7 days were enrolled in a prospective cross-sectional study, from September, 2009 to October, 2013, in Salvador, in a tropical region of Brazil. Upon recruitment, demographic, clinical data, and nasopharyngeal aspirates (NPA) were collected. A multiplex quantitative real-time polymerase chain reaction (RT-PCR) with a group-specific primer and probeset for RSVA and RSVB was used. Seasonal distribution of infection by RSV different antigenic groups was evaluated by Prais-Wisten regression.Of 560 cases, the mean age was 11.4 ± 4.5 months and there were 287 (51.3%) girls. Overall, RSV was detected in 139 (24.8%; 95% CI: 21.4%-28.5%) cases, RSVA in 74 (13.2%; 95% CI: 10.6%-16.2%) cases, and RSVB in 67 (12.0%; 95% CI: 9.5%-14.9%) cases. Two (0.4%; 95% CI: 0.06%-1.2%) cases had coinfection. RSVA frequency was 9.6%, 18.4%, 21.6%, and 3.1% in 2010, 2011, 2012, and 2013, respectively. RSVB frequency was 19.2%, 0.7%, 1.4%, and 35.4% in the same years. RSVA was more frequently found from August to January than February to July (18.2% vs. 6.4%, P < 0.001). RSVB was more frequently found (P < 0.001) between March and June (36.0%) than July to October (1.0%) or November to February (1.6%). RSVB infection showed seasonal distribution and positive association with humidity (P = 0.02) whereas RSVA did not. RSVA was more common among children ≥1-year-old (17.8% vs. 1.8%; P = 0.02), as opposed to RSVB (11.5% vs. 12.2%; P = 0.8).One quarter of patients had RSV infection. RSVA compromised more frequently children aged ≥1 year. RSVA predominated in 2011 and 2012 whereas RSVB predominated in 2010 and 2013. In regard to months, RSVA was more frequent from August to January whereas RSVB was more often detected between March and June. Markedly different monthly as well as yearly patterns for RSVA and RSVB reveal independent RSV antigenic groups' epidemics.
Collapse
Affiliation(s)
- Maiara L Bouzas
- Postgraduate Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Bahia, Brazil Centro de Pesquisas Gonçalo Moniz (CPqGM), Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Bahia, Brazil Department of Pathology, Federal University of Bahia School of Medicine, Salvador, Bahia, Brazil Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU, Leuven, Belgium Department of Pediatrics, Federal University of Bahia School of Medicine, Salvador, Bahia, Brazil
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
80
|
Yinda CK, Rector A, Zeller M, Conceição-Neto N, Heylen E, Maes P, Ghogomu SM, Van Ranst M, Matthijnssens J. A single bat species in Cameroon harbors multiple highly divergent papillomaviruses in stool identified by metagenomics analysis. ACTA ACUST UNITED AC 2016; 6:74-80. [PMID: 32289018 PMCID: PMC7103942 DOI: 10.1016/j.virep.2016.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 08/18/2016] [Accepted: 08/18/2016] [Indexed: 01/28/2023]
Abstract
A number of PVs have been described in bats but to the best of our knowledge not from feces. Using a previously described NetoVIR protocol, Eidolon helvum pooled fecal samples (Eh) were treated and sequenced by Illumina next generation sequencing technology. Two complete genomes of novel PVs (EhPV2 and EhPV3) and 3 partial sequences (BATPV61, BATPV890a and BATPV890b) were obtained and analysis showed that the EhPV2 and EhPV3 major capsid proteins cluster with and share 60-64% nucleotide identity with that of Rousettus aegyptiacus PV1, thus representing new species of PVs within the genus Psipapillomavirus. The other PVs clustered in different branches of our phylogenetic tree and may potentially represent novel species and/or genera. This points to the vast diversity of PVs in bats and in Eidolon helvum bats in particular, therefore adding support to the current concept that PV evolution is more complex than merely strict PV-host co-evolution.
Collapse
Affiliation(s)
- Claude Kwe Yinda
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, Leuven, Belgium
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Leuven, Belgium
| | - Annabel Rector
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Leuven, Belgium
| | - Mark Zeller
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, Leuven, Belgium
| | - Nádia Conceição-Neto
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, Leuven, Belgium
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Leuven, Belgium
| | - Elisabeth Heylen
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, Leuven, Belgium
| | - Piet Maes
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Leuven, Belgium
| | - Stephen Mbigha Ghogomu
- University of Buea, Department of Biochemistry and Molecular Biology, Biotechnology Unit, Molecular and Cell Biology Laboratory, Buea, Cameroon
| | - Marc Van Ranst
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory for Clinical and Epidemiological Virology, Leuven, Belgium
| | - Jelle Matthijnssens
- KULeuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, Leuven, Belgium
- Corresponding author.
| |
Collapse
|
81
|
Wouters MM, Van Wanrooy S, Nguyen A, Dooley J, Aguilera-Lizarraga J, Van Brabant W, Garcia-Perez JE, Van Oudenhove L, Van Ranst M, Verhaegen J, Liston A, Boeckxstaens G. Psychological comorbidity increases the risk for postinfectious IBS partly by enhanced susceptibility to develop infectious gastroenteritis. Gut 2016; 65:1279-88. [PMID: 26071133 DOI: 10.1136/gutjnl-2015-309460] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/19/2015] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Psychological factors increase the risk to develop postinfectious IBS (PI-IBS), but the mechanisms involved are unclear. As stress affects the immune system, we investigated the potential interaction between psychological factors, the immune response against infectious gastroenteritis (IGE) and the development of IGE and PI-IBS in a large cohort exposed to contaminated drinking water. DESIGN 18 620 people exposed to contaminated drinking water (norovirus, Giardia lamblia, Campylobacter jejuni) were invited to participate in a prospective controlled cohort study. They were asked to complete questionnaires assessing demographic, psychological and clinical data during the outbreak and 1 year later. At both time points, in-depth immune function (peripheral blood and rectal biopsies) was studied in a subgroup of subjects. RESULTS 1379 subjects completed the questionnaires during the outbreak, of which 271 developed IGE. Risk factors for IGE included younger age, pre-existing dyspepsia-like symptoms, anxiety and drinking contaminated tap water. Anxiety scores before the outbreak inversely correlated with interleukin-2-expressing CD4+ T cells (r=0.6, p=0.01, n=23). At follow-up, 34 of 172 (20%) IGE subjects developed IBS compared with 24/366 exposed participants (7%, p<0.0001, χ(2) test). A Th2 cytokine phenotype at time of infection was associated with increased risk for PI-IBS 1 year later. Except for increased B cell numbers, no evidence for systemic or rectal mucosal immune activation in PI-IBS was demonstrated at follow-up. CONCLUSIONS Our study shows that the increased risk of patients with psychological comorbidity to develop PI-IBS may partly result from an increased susceptibility to develop IGE, possibly resulting from a Th2-immune bias. TRIAL REGISTRATION NUMBER (ClinicalTrials.gov NCT01497847).
Collapse
Affiliation(s)
- Mira M Wouters
- Department of Clinical and Experimental Medicine, Translational Research Center for Gastrointestinal Disorders, University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Sander Van Wanrooy
- Department of Clinical and Experimental Medicine, Translational Research Center for Gastrointestinal Disorders, University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Anh Nguyen
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium Autoimmune Genetics Laboratory, VIB, Leuven, Belgium
| | - James Dooley
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium Autoimmune Genetics Laboratory, VIB, Leuven, Belgium
| | - Javier Aguilera-Lizarraga
- Department of Clinical and Experimental Medicine, Translational Research Center for Gastrointestinal Disorders, University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Winde Van Brabant
- Department of Clinical and Experimental Medicine, Translational Research Center for Gastrointestinal Disorders, University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Josselyn E Garcia-Perez
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium Autoimmune Genetics Laboratory, VIB, Leuven, Belgium
| | - Lukas Van Oudenhove
- Department of Clinical and Experimental Medicine, Translational Research Center for Gastrointestinal Disorders, University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical Virology, Rega Institute for Medical Research, University Hospital Leuven, Leuven, Belgium
| | - Jan Verhaegen
- Department of Microbiology, University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - Adrian Liston
- Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium Autoimmune Genetics Laboratory, VIB, Leuven, Belgium
| | - Guy Boeckxstaens
- Department of Clinical and Experimental Medicine, Translational Research Center for Gastrointestinal Disorders, University Hospital Leuven, KU Leuven, Leuven, Belgium
| |
Collapse
|
82
|
Heylen E, Zeller M, Ciarlet M, Lawrence J, Steele D, Van Ranst M, Matthijnssens J. Human P[6] Rotaviruses From Sub-Saharan Africa and Southeast Asia Are Closely Related to Those of Human P[4] and P[8] Rotaviruses Circulating Worldwide. J Infect Dis 2016; 214:1039-49. [PMID: 27471320 DOI: 10.1093/infdis/jiw247] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 06/06/2016] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND P[6] rotaviruses have been circulating with a high prevalence in African and, to a more limited extent, Asian countries, but they have not been highly prevalent in other parts of the world. METHODS To investigate the genomic relationship between African and Asian human P[6] rotaviruses and P[4] and P[8] rotaviruses circulating worldwide, we sequenced 39 P[6] strains, collected in Ghana, Mali, Kenya and Bangladesh, providing the largest data set of P[6] rotavirus genomes isolated in low-income countries or anywhere else in the world that has been published thus far. RESULTS Overall, the data indicate that the genetic backbone of human P[6] strains from the low-income countries are similar to those of P[4] or P[8] strains circulating worldwide. CONCLUSIONS The observation that gene segment 4 is the main differentiator between human P[6] and non-P[6] strains suggests that the VP4 spike protein is most likely one of the main reasons preventing the rapid spread of P[6] strains to the rest of the world despite multiple introductions. These observations reinforce previous findings about the receptor specificity of P[6] rotavirus strains.
Collapse
Affiliation(s)
- Elisabeth Heylen
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Rega Institute for Medical Research, Belgium
| | - Mark Zeller
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Rega Institute for Medical Research, Belgium
| | - Max Ciarlet
- Vaccines-Clinical Research Department, Merck, Kenilworth, New Jersey
| | - Jody Lawrence
- Vaccines-Clinical Research Department, Merck, Kenilworth, New Jersey
| | - Duncan Steele
- Vaccines and Immunization, PATH, Seattle, Washington
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Rega Institute for Medical Research, Belgium
| | - Jelle Matthijnssens
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, KU Leuven-University of Leuven, Rega Institute for Medical Research, Belgium
| |
Collapse
|
83
|
Khodaparast L, Khodaparast L, Van Mellaert L, Shahrooei M, Van Ranst M, Van Eldere J. sesC as a genetic marker for easy identification of Staphylococcus epidermidis from other isolates. Infect Genet Evol 2016; 43:222-4. [PMID: 27259364 DOI: 10.1016/j.meegid.2016.05.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 05/25/2016] [Accepted: 05/30/2016] [Indexed: 12/01/2022]
Abstract
Staphylococcus epidermidis is one of the major concerns with respect to hospital-acquired infections. Therefore, a rapid and easy method to identify at species level S. epidermidis isolates out of a broad range of bacteria is necessary. Based on earlier studies, the sesC gene encoding a S. epidermidis surface protein revealed to be a highly conserved gene in this species. By means of an easy and inexpensive PCR assay, the presence of sesC was checked in 438 clinical staphylococcal isolates. Results showed that sesC is specifically present in all S. epidermidis. In conclusion, the sesC gene can be exploited as a genetic marker in order to distinguish S. epidermidis from other isolates.
Collapse
Affiliation(s)
- Ladan Khodaparast
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Clinical Bacteriology and Mycology, Herestraat 49, box 819, B-3000 Leuven, Belgium; KU Leuven, University of Leuven, Department of Cellular and Molecular Medicine, Switch Laboratory, Herestraat 49, box 802, B-3000 Leuven, Belgium
| | - Laleh Khodaparast
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Clinical Bacteriology and Mycology, Herestraat 49, box 819, B-3000 Leuven, Belgium; KU Leuven, University of Leuven, Department of Cellular and Molecular Medicine, Switch Laboratory, Herestraat 49, box 802, B-3000 Leuven, Belgium.
| | - Lieve Van Mellaert
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Molecular Bacteriology, Herestraat 49, box 1037, B-3000 Leuven, Belgium
| | - Mohammad Shahrooei
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Clinical Bacteriology and Mycology, Herestraat 49, box 819, B-3000 Leuven, Belgium
| | - Marc Van Ranst
- KU Leuven, University of Leuven, University Hospitals Leuven, Department of Microbiology and Immunology, Herestraat 49, box 7001, B-3000 Leuven, Belgium; KU Leuven, University of Leuven, University Hospitals Leuven, Department of Microbiology and Immunology, Kapucijnenvoer 33 blok I, box 7001, B-3000 Leuven, Belgium
| | - Johan Van Eldere
- KU Leuven, University of Leuven, Department of Microbiology and Immunology, Clinical Bacteriology and Mycology, Herestraat 49, box 819, B-3000 Leuven, Belgium; KU Leuven, University of Leuven, University Hospitals Leuven, Department of Laboratory Medicine, Herestraat 49, box 7003, B-3000 Leuven, Belgium.
| |
Collapse
|
84
|
Clement J, Van Ranst M. Three vole species and one (?) novel arvicolid hantavirus pathogen: Tula virus revisited. ACTA ACUST UNITED AC 2016; 21:30108. [PMID: 26794642 DOI: 10.2807/1560-7917.es.2016.21.2.30108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Accepted: 01/14/2016] [Indexed: 11/20/2022]
Affiliation(s)
- Jan Clement
- National Hantavirus Reference Centre, Laboratory of Clinical and Epidemiological Virology and Rega Institute for Medical Research, University of Leuven, U.Z. Gasthuisberg, Belgium
| | | |
Collapse
|
85
|
Theuns S, Conceição-Neto N, Zeller M, Heylen E, Roukaerts IDM, Desmarets LMB, Van Ranst M, Nauwynck HJ, Matthijnssens J. Characterization of a genetically heterogeneous porcine rotavirus C, and other viruses present in the fecal virome of a non-diarrheic Belgian piglet. Infect Genet Evol 2016; 43:135-45. [PMID: 27184192 PMCID: PMC7172746 DOI: 10.1016/j.meegid.2016.05.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 04/15/2016] [Accepted: 05/12/2016] [Indexed: 12/31/2022]
Abstract
Next-generation sequencing (NGS) technologies are becoming increasingly accessible, leading to an expanded interest in the composition of the porcine enteric virome. In the present study, the fecal virome of a non-diarrheic Belgian piglet was determined. Although the virome of only a single piglet was analyzed, some interesting data were obtained, including the second complete genome of a pig group C rotavirus (RVC). This Belgian strain was only distantly related to the only other completely characterized pig RVC strain, Cowden. Its relatedness to RVC strains from other host species was also analyzed and the porcine strain found in our study was only distantly related to RVCs detected in humans and cows. The gene encoding the outer capsid protein VP7 belonged to the rare porcine G3 genotype, which might be serologically distinct from most other pig RVC strains. A putative novel RVC VP6 genotype was identified as well. A group A rotavirus strain also present in this fecal sample contained the rare pig genotype combination G11P[27], but was only partially characterized. Typical pig RVA genotypes I5, A8, and T7 were found for the viral proteins VP6, NSP1, and NSP3, respectively. Interestingly, the fecal virome of the piglet also contained an astrovirus and an enterovirus, of which the complete genomes were characterized. Results of the current study indicate that many viruses may be present simultaneously in fecal samples of non-diarrheic piglets. In this study, these viruses could not be directly associated with any disease, but still they might have had a potential subclinical impact on pig growth performance. The fast evolution of NGS will be a powerful tool for future diagnostics in veterinary practice. Its application will certainly lead to better insights into the relevance of many (sub)clinical enteric viral infections, that may have remained unnoticed using traditional diagnostic techniques. This will stimulate the development of new and durable prophylactic measures to improve pig health and production. The virome of a non-diarrheic Belgian piglet was determined. Porcine group C and A rotaviruses, and an astrovirus and enterovirus were found. The second complete genome of a pig group C rotavirus was fully characterized. The Belgian rotavirus C strain was only distantly related to pig strain Cowden. A putative novel genotype of VP6 of the RVC strains was detected.
Collapse
Affiliation(s)
- Sebastiaan Theuns
- Ghent University, Faculty of Veterinary Medicine, Department of Virology, Parasitology and Immunology, Laboratory of Virology, Merelbeke B-9820, Belgium.
| | - Nádia Conceição-Neto
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, B-3000 Leuven, Belgium; KU Leuven - University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Clinical Virology, B-3000, Leuven, Belgium
| | - Mark Zeller
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, B-3000 Leuven, Belgium
| | - Elisabeth Heylen
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, B-3000 Leuven, Belgium
| | - Inge D M Roukaerts
- Ghent University, Faculty of Veterinary Medicine, Department of Virology, Parasitology and Immunology, Laboratory of Virology, Merelbeke B-9820, Belgium
| | - Lowiese M B Desmarets
- Ghent University, Faculty of Veterinary Medicine, Department of Virology, Parasitology and Immunology, Laboratory of Virology, Merelbeke B-9820, Belgium
| | - Marc Van Ranst
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Clinical Virology, B-3000, Leuven, Belgium
| | - Hans J Nauwynck
- Ghent University, Faculty of Veterinary Medicine, Department of Virology, Parasitology and Immunology, Laboratory of Virology, Merelbeke B-9820, Belgium
| | - Jelle Matthijnssens
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Viral Metagenomics, B-3000 Leuven, Belgium
| |
Collapse
|
86
|
Arbyn M, Broeck DV, Benoy I, Bogers J, Depuydt C, Praet M, Sutter PD, Hoorens A, Hauben E, Poppe W, Van Ranst M, Delvenne P, Gofflot S, Pétein M, Engelen F, Vanneste A, Beeck LOD, Damme PV, Temmerman M, Weyers S. Surveillance of effects of HPV vaccination in Belgium. Cancer Epidemiol 2016; 41:152-8. [PMID: 26895623 DOI: 10.1016/j.canep.2015.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/19/2015] [Accepted: 12/22/2015] [Indexed: 01/27/2023]
Abstract
BACKGROUND Early effects of HPV (human papillomavirus) vaccination are reflected by changes observable in young women attending cervical cancer screening. SUBJECT AND METHODS The SEHIB study included HPV geno-typing of ∼6000 continuous and 650 pathological cervical cell specimen as well as biopsies, collected from women in Belgium in 2010-2014. Data were linked to vaccination status. RESULTS HPV vaccination offered protection among women aged <30years against infection with HPV16 (vaccine effectiveness [VE]=67%, 95% CI: 48-79%), HPV18 (VE=93%, 95% CI: 52-99%), and high-risk HPV (VE=16%, 95% CI: 2-29%). Vaccination protected also against cytological lesions. Vaccination protected against histologically confirmed lesions: significantly lower absolute risks of CIN1+ (risk difference [RD]=-1.6%, 95% CI: -2.6% to -0.7%) and CIN3+ associated with HPV16/18 (RD=-0.3%, 95% CI -0.6% to -0.1%). Vaccine effectiveness decreased with age. Protection against HPV16 and 18 infection was significant in all age groups, however no protection was observed against cytological lesions associated with these types in age-group 25-29. CONCLUSION The SEHIB study demonstrates the effectiveness of HPV vaccination in Belgian young women in particular in age group 18-19. Declining effectiveness with increasing age may be explained by higher tendency of women already exposed to infection to get the vaccine.
Collapse
Affiliation(s)
- Marc Arbyn
- Unit of Cancer Epidemiology/Belgian Cancer Centre, Scientific Institute of Public Health, J. Wytsmanstreet 14, B1050 Brussels, Belgium.
| | - Davy Vanden Broeck
- International Centre for Reproductive Health (ICRH), Ghent University, Ghent, Belgium; Algemeen Medisch Labo, Sonic Healtcare, Antwerp, Belgium; AMBIOR, Laboratory for Cell Biology & Histology, University of Antwerp, Antwerp, Belgium
| | - Ina Benoy
- Algemeen Medisch Labo, Sonic Healtcare, Antwerp, Belgium; AMBIOR, Laboratory for Cell Biology & Histology, University of Antwerp, Antwerp, Belgium
| | - Johannes Bogers
- Algemeen Medisch Labo, Sonic Healtcare, Antwerp, Belgium; AMBIOR, Laboratory for Cell Biology & Histology, University of Antwerp, Antwerp, Belgium
| | | | - Marleen Praet
- N. Goormachtigh Institute for Pathology, Ghent University, Ghent, Belgium
| | - Philippe De Sutter
- Department of Gynaecology & Oncology, UZ Brussel, Free University of Brussels, Brussels, Belgium
| | | | | | - Willy Poppe
- Department of Gynaecology and Obstetrics, UZ Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium
| | | | | | - Michel Pétein
- Institut de Pathologie et de Génétique, Charlerloi, Belgium
| | | | | | | | - Pierre Van Damme
- Vaccine & Infectious Disease Institute (VAXINFECTIO), Antwerp University, Antwerp, Belgium
| | - Marleen Temmerman
- International Centre for Reproductive Health (ICRH), Ghent University, Ghent, Belgium; Reproductive Health and Research, World Health Organization, Geneva, Switzerland; Department of Gynaecology and Obstetrics, Ghent University, Ghent, Belgium
| | - Steven Weyers
- Department of Gynaecology and Obstetrics, Ghent University, Ghent, Belgium
| |
Collapse
|
87
|
Pitzer VE, Bilcke J, Heylen E, Crawford FW, Callens M, De Smet F, Van Ranst M, Zeller M, Matthijnssens J. Did Large-Scale Vaccination Drive Changes in the Circulating Rotavirus Population in Belgium? Sci Rep 2015; 5:18585. [PMID: 26687288 PMCID: PMC4685644 DOI: 10.1038/srep18585] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 11/20/2015] [Indexed: 12/13/2022] Open
Abstract
Vaccination can place selective pressures on viral populations, leading to changes in the distribution of strains as viruses evolve to escape immunity from the vaccine. Vaccine-driven strain replacement is a major concern after nationwide rotavirus vaccine introductions. However, the distribution of the predominant rotavirus genotypes varies from year to year in the absence of vaccination, making it difficult to determine what changes can be attributed to the vaccines. To gain insight in the underlying dynamics driving changes in the rotavirus population, we fitted a hierarchy of mathematical models to national and local genotype-specific hospitalization data from Belgium, where large-scale vaccination was introduced in 2006. We estimated that natural- and vaccine-derived immunity was strongest against completely homotypic strains and weakest against fully heterotypic strains, with an intermediate immunity amongst partially heterotypic strains. The predominance of G2P[4] infections in Belgium after vaccine introduction can be explained by a combination of natural genotype fluctuations and weaker natural and vaccine-induced immunity against infection with strains heterotypic to the vaccine, in the absence of significant variation in strain-specific vaccine effectiveness against disease. However, the incidence of rotavirus gastroenteritis is predicted to remain low despite vaccine-driven changes in the distribution of genotypes.
Collapse
Affiliation(s)
- Virginia E Pitzer
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut, United States of America.,Fogarty International Center, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Joke Bilcke
- Centre for Health Economics Research &Modeling of Infectious Diseases (CHERMID), Vaccine and Infectious Disease Institute (VAXINFECTIO), University of Antwerp, Wilrijk, Antwerp, Belgium
| | - Elisabeth Heylen
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Forrest W Crawford
- Department of Biostatistics, Yale School of Public Health, and Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut, United States of America
| | - Michael Callens
- National Alliance of Christian Sickness Funds, Brussels, Belgium
| | - Frank De Smet
- National Alliance of Christian Sickness Funds, Brussels, Belgium.,KU Leuven - University of Leuven, Department of Public Health and Primary Care, Environment and Health, Leuven, Belgium
| | - Marc Van Ranst
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Mark Zeller
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Jelle Matthijnssens
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological virology, Rega Institute for Medical Research, Leuven, Belgium
| |
Collapse
|
88
|
Conceição-Neto N, Zeller M, Lefrère H, De Bruyn P, Beller L, Deboutte W, Yinda CK, Lavigne R, Maes P, Van Ranst M, Heylen E, Matthijnssens J. Modular approach to customise sample preparation procedures for viral metagenomics: a reproducible protocol for virome analysis. Sci Rep 2015; 5:16532. [PMID: 26559140 PMCID: PMC4642273 DOI: 10.1038/srep16532] [Citation(s) in RCA: 208] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 10/15/2015] [Indexed: 12/19/2022] Open
Abstract
A major limitation for better understanding the role of the human gut virome in health and disease is the lack of validated methods that allow high throughput virome analysis. To overcome this, we evaluated the quantitative effect of homogenisation, centrifugation, filtration, chloroform treatment and random amplification on a mock-virome (containing nine highly diverse viruses) and a bacterial mock-community (containing four faecal bacterial species) using quantitative PCR and next-generation sequencing. This resulted in an optimised protocol that was able to recover all viruses present in the mock-virome and strongly alters the ratio of viral versus bacterial and 16S rRNA genetic material in favour of viruses (from 43.2% to 96.7% viral reads and from 47.6% to 0.19% bacterial reads). Furthermore, our study indicated that most of the currently used virome protocols, using small filter pores and/or stringent centrifugation conditions may have largely overlooked large viruses present in viromes. We propose NetoVIR (Novel enrichment technique of VIRomes), which allows for a fast, reproducible and high throughput sample preparation for viral metagenomics studies, introducing minimal bias. This procedure is optimised mainly for faecal samples, but with appropriate concentration steps can also be used for other sample types with lower initial viral loads.
Collapse
Affiliation(s)
- Nádia Conceição-Neto
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium.,KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical Virology, Rega Institute for Medical Research Leuven, Belgium
| | - Mark Zeller
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium
| | - Hanne Lefrère
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium
| | - Pieter De Bruyn
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium
| | - Leen Beller
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium
| | - Ward Deboutte
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium
| | - Claude Kwe Yinda
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium.,KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical Virology, Rega Institute for Medical Research Leuven, Belgium
| | - Rob Lavigne
- KU Leuven - University of Leuven, Department of Biosystems, Laboratory of Gene Technology, Faculty of Bioscience Engineering, Belgium
| | - Piet Maes
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical Virology, Rega Institute for Medical Research Leuven, Belgium
| | - Marc Van Ranst
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical Virology, Rega Institute for Medical Research Leuven, Belgium
| | - Elisabeth Heylen
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium
| | - Jelle Matthijnssens
- KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory of Viral Metagenomics, Rega Institute for Medical Research Leuven, Belgium.,KU Leuven - University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical Virology, Rega Institute for Medical Research Leuven, Belgium
| |
Collapse
|
89
|
Mullikin M, Tan L, Jansen JP, Van Ranst M, Farkas N, Petri E. Erratum to: A Novel Dynamic Model for Health Economic Analysis of Influenza Vaccination in the Elderly. Infect Dis Ther 2015; 4:489-90. [PMID: 26407566 PMCID: PMC4675764 DOI: 10.1007/s40121-015-0090-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Affiliation(s)
| | - Litjen Tan
- Immunization Action Coalition, Saint Paul, MN, USA
| | | | | | | | | |
Collapse
|
90
|
Mullikin M, Tan L, Jansen JP, Van Ranst M, Farkas N, Petri E. A Novel Dynamic Model for Health Economic Analysis of Influenza Vaccination in the Elderly. Infect Dis Ther 2015; 4:459-87. [PMID: 26350238 PMCID: PMC4675767 DOI: 10.1007/s40121-015-0076-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Indexed: 11/26/2022] Open
Abstract
Introduction New vaccines are being developed to improve the efficacy of seasonal influenza immunization in elderly persons aged ≥65 years. These products require clinical and economic evaluation to aid policy decisions. Methods To address this need, a two-part model has been developed, which we have applied to examine the potential clinical and economic impact of vaccinating elderly persons with adjuvanted trivalent inactivated influenza vaccine (aTIV) relative to conventional trivalent (TIV) and quadrivalent (QIV) vaccines. We compared outcomes in the US population for (1) aTIV in persons aged ≥65 years and QIV in all other age cohorts; (2) QIV in all cohorts; (3) TIV in all cohorts. Low, average, and high intensity seasons with low, average, and high vaccine match scenarios were compared. Probabilistic sensitivity analysis was conducted within each discrete scenario to explore the impact of variation in model inputs on potential outcomes. Results Assuming current vaccination coverage rates in the US population with (a) 25% better efficacy of adjuvanted versus non-adjuvanted vaccine against any strain and (b) 35% better efficacy of non-adjuvanted vaccine against matched B versus mismatched B strains, use of aTIV in persons aged ≥65 years and QIV in persons <65 years could reduce influenza cases by 11,166–1,329,200, hospitalizations by 1365–43,674, and deaths by 421–11,320 versus use of QIV in all cohorts. These outcomes are reflected in a corresponding increase in quality-adjusted life-years (QALYs) of 3003–94,084. If the prevalence of mismatched influenza B was >54.5% of all circulating strains, use of QIV in all cohorts would offset the clinical benefits of aTIV. Elderly aTIV or QIV vaccination was associated with improved outcomes over non-adjuvanted TIV in many of the scenarios, particularly in low match seasons of any intensity. Total cost savings (including direct and indirect healthcare costs plus productivity impacts) with aTIV in the elderly versus QIV in the whole population ranged from $27 million (low intensity, low match) to $934 million (high intensity, high match). Univariate sensitivity analysis of relative vaccine prices in the average intensity, average match scenario indicated that aTIV could be marginally cost saving relative to QIV at the currently published Medicare price for influenza vaccines offering enhanced efficacy in the elderly. Elderly vaccination with aTIV was associated with a higher overall cost compared with TIV in only two scenarios (low intensity with average or high match); the incremental cost/QALY relative to TIV was $9980 in the average match scenario and $28,800 in the high match scenario. Conclusions Vaccination of persons aged ≥65 years with aTIV has the potential to provide clinical and economic benefit relative to QIV and TIV. The new model allows the assessment of various alternative strategies for available influenza vaccines. Funding Novartis Vaccines. Electronic supplementary material The online version of this article (doi:10.1007/s40121-015-0076-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
| | - Litjen Tan
- Immunization Action Coalition, Saint Paul, MN, USA
| | | | | | | | | |
Collapse
|
91
|
Houben E, De Preter V, Billen J, Van Ranst M, Verbeke K. Additional Value of CH₄ Measurement in a Combined (13)C/H₂ Lactose Malabsorption Breath Test: A Retrospective Analysis. Nutrients 2015; 7:7469-85. [PMID: 26371034 PMCID: PMC4586543 DOI: 10.3390/nu7095348] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 08/31/2015] [Accepted: 09/01/2015] [Indexed: 12/18/2022] Open
Abstract
The lactose hydrogen breath test is a commonly used, non-invasive method for the detection of lactose malabsorption and is based on an abnormal increase in breath hydrogen (H2) excretion after an oral dose of lactose. We use a combined 13C/H2 lactose breath test that measures breath 13CO2 as a measure of lactose digestion in addition to H2 and that has a better sensitivity and specificity than the standard test. The present retrospective study evaluated the results of 1051 13C/H2 lactose breath tests to assess the impact on the diagnostic accuracy of measuring breath CH4 in addition to H2 and 13CO2. Based on the 13C/H2 breath test, 314 patients were diagnosed with lactase deficiency, 138 with lactose malabsorption or small bowel bacterial overgrowth (SIBO), and 599 with normal lactose digestion. Additional measurement of CH4 further improved the accuracy of the test as 16% subjects with normal lactose digestion and no H2-excretion were found to excrete CH4. These subjects should have been classified as subjects with lactose malabsorption or SIBO. In conclusion, measuring CH4-concentrations has an added value to the 13C/H2 breath test to identify methanogenic subjects with lactose malabsorption or SIBO.
Collapse
Affiliation(s)
- Els Houben
- Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven 3000, Belgium.
- Clinical Department of Laboratory Medicine, University Hospitals Leuven, Leuven 3000, Belgium.
| | - Vicky De Preter
- Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven 3000, Belgium.
- Group Health and Social Work, University College Leuven-Limburg (UCLL), Leuven 3000, Belgium.
| | - Jaak Billen
- Clinical Department of Laboratory Medicine, University Hospitals Leuven, Leuven 3000, Belgium.
| | - Marc Van Ranst
- Clinical Department of Laboratory Medicine, University Hospitals Leuven, Leuven 3000, Belgium.
- Laboratory of Clinical and Epidemiological Virology, KU Leuven, Leuven 3000, Belgium.
| | - Kristin Verbeke
- Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven 3000, Belgium.
- Leuven Food Science and Nutrition Research Centre (LFoRCe), Leuven 3000, Belgium.
| |
Collapse
|
92
|
Zeller M, Donato C, Trovão NS, Cowley D, Heylen E, Donker NC, McAllen JK, Akopov A, Kirkness EF, Lemey P, Van Ranst M, Matthijnssens J, Kirkwood CD. Genome-Wide Evolutionary Analyses of G1P[8] Strains Isolated Before and After Rotavirus Vaccine Introduction. Genome Biol Evol 2015; 7:2473-83. [PMID: 26254487 PMCID: PMC4607516 DOI: 10.1093/gbe/evv157] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Rotaviruses are the most important etiological agent of acute gastroenteritis in young children worldwide. Among the first countries to introduce rotavirus vaccines into their national immunization programs were Belgium (November 2006) and Australia (July 2007). Surveillance programs in Belgium (since 1999) and Australia (since 1989) offer the opportunity to perform a detailed comparison of rotavirus strains circulating pre- and postvaccine introduction. G1P[8] rotaviruses are the most prominent genotype in humans, and a total of 157 G1P[8] rotaviruses isolated between 1999 and 2011 were selected from Belgium and Australia and their complete genomes were sequenced. Phylogenetic analysis showed evidence of frequent reassortment among Belgian and Australian G1P[8] rotaviruses. Although many different phylogenetic subclusters were present before and after vaccine introduction, some unique clusters were only identified after vaccine introduction, which could be due to natural fluctuation or the first signs of vaccine-driven evolution. The times to the most recent common ancestors for the Belgian and Australian G1P[8] rotaviruses ranged from 1846 to 1955 depending on the gene segment, with VP7 and NSP4 resulting in the most recent estimates. We found no evidence that rotavirus population size was affected after vaccine introduction and only six amino acid sites in VP2, VP3, VP7, and NSP1 were identified to be under positive selective pressure. Continued surveillance of G1P[8] strains is needed to determine long-term effects of vaccine introductions, particularly now rotavirus vaccines are implemented in the national immunization programs of an increasing number of countries worldwide.
Collapse
Affiliation(s)
- Mark Zeller
- Laboratory of Clinical Virology, University of Leuven, Leuven, Belgium
| | - Celeste Donato
- Enteric Virus Research Group, Murdoch Childrens Research Institute, Royal Children's Hospital, Parkville, VIC, Australia Department of Microbiology, La Trobe University, Bundoora, VIC, Australia
| | - Nídia Sequeira Trovão
- Laboratory Evolutionary and Computational Virology, University of Leuven, Leuven, Belgium
| | - Daniel Cowley
- Enteric Virus Research Group, Murdoch Childrens Research Institute, Royal Children's Hospital, Parkville, VIC, Australia
| | - Elisabeth Heylen
- Laboratory of Clinical Virology, University of Leuven, Leuven, Belgium
| | - Nicole C Donker
- Enteric Virus Research Group, Murdoch Childrens Research Institute, Royal Children's Hospital, Parkville, VIC, Australia
| | | | - Asmik Akopov
- Laboratory Evolutionary and Computational Virology, University of Leuven, Leuven, Belgium
| | | | - Philippe Lemey
- Laboratory Evolutionary and Computational Virology, University of Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical Virology, University of Leuven, Leuven, Belgium
| | | | - Carl D Kirkwood
- Enteric Virus Research Group, Murdoch Childrens Research Institute, Royal Children's Hospital, Parkville, VIC, Australia Department of Microbiology, La Trobe University, Bundoora, VIC, Australia
| |
Collapse
|
93
|
Pineda-Peña AC, Faria NR, Mina T, Amini-Bavil-Olyaee S, Alavian SM, Lemey P, Maes P, Ranst MV, Pourkarim MR. Corrigendum to “Epidemiological history and genomic characterization of non-D1 HBV strains identified in Iran”[J. Clin. Virol. 63 (2015) 38–41]. J Clin Virol 2015. [DOI: 10.1016/j.jcv.2015.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
94
|
Schepens B, Sedeyn K, Vande Ginste L, De Baets S, Schotsaert M, Roose K, Houspie L, Van Ranst M, Gilbert B, van Rooijen N, Fiers W, Piedra P, Saelens X. Protection and mechanism of action of a novel human respiratory syncytial virus vaccine candidate based on the extracellular domain of small hydrophobic protein. EMBO Mol Med 2015; 6:1436-54. [PMID: 25298406 PMCID: PMC4237470 DOI: 10.15252/emmm.201404005] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Infections with human respiratory syncytial virus (HRSV) occur globally in all age groups and can have devastating consequences in young infants. We demonstrate that a vaccine based on the extracellular domain (SHe) of the small hydrophobic (SH) protein of HRSV, reduced viral replication in challenged laboratory mice and in cotton rats. We show that this suppression of viral replication can be transferred by serum and depends on a functional IgG receptor compartment with a major contribution of FcγRI and FcγRIII. Using a conditional cell depletion method, we provide evidence that alveolar macrophages are involved in the protection by SHe-specific antibodies. HRSV-infected cells abundantly express SH on the cell surface and are likely the prime target of the humoral immune response elicited by SHe-based vaccination. Finally, natural infection of humans and experimental infection of mice or cotton rats does not induce a strong immune response against HRSV SHe. Using SHe as a vaccine antigen induces immune protection against HRSV by a mechanism that differs from the natural immune response and from other HRSV vaccination strategies explored to date. Hence, HRSV vaccine candidates that aim at inducing protective neutralizing antibodies or T-cell responses could be complemented with a SHe-based antigen to further improve immune protection.
Collapse
Affiliation(s)
- Bert Schepens
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Koen Sedeyn
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Liesbeth Vande Ginste
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sarah De Baets
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Michael Schotsaert
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kenny Roose
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lieselot Houspie
- Laboratory of Clinical Virology, Rega Institute for Medical Research KU Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Laboratory of Clinical Virology, Rega Institute for Medical Research KU Leuven, Leuven, Belgium
| | - Brian Gilbert
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Nico van Rooijen
- Department of Molecular Cell Biology, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Walter Fiers
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Pedro Piedra
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Xavier Saelens
- VIB Inflammation Research Center, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| |
Collapse
|
95
|
Mina T, Amini-Bavil-Olyaee S, Tacke F, Maes P, Van Ranst M, Pourkarim MR. Genomic Diversity of Hepatitis B Virus Infection Associated With Fulminant Hepatitis B Development. Hepat Mon 2015; 15:e29477. [PMID: 26288637 PMCID: PMC4533131 DOI: 10.5812/hepatmon.29477v2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 05/25/2015] [Indexed: 12/11/2022]
Abstract
CONTEXT After five decades of Hepatitis B Virus (HBV) vaccine discovery, HBV is still a major public health problem. Due to the high genetic diversity of HBV and selective pressure of the host immune system, intra-host evolution of this virus in different clinical manifestations is a hot topic of research. HBV infection causes a range of clinical manifestations from acute to chronic infection, cirrhosis and hepatocellular carcinoma. Among all forms of HBV infection manifestations, fulminant hepatitis B infection possesses the highest fatality rate. Almost 1% of the acutely infected patients develop fulminant hepatitis B, in which the mortality rate is around 70%. EVIDENCE ACQUISITION All published papers deposited in Genbank, on the topic of fulminant hepatitis were reviewed and their virological aspects were investigated. In this review, we highlight the genomic diversity of HBV reported from patients with fulminant HBV infection. RESULTS The most commonly detected diversities affect regulatory motifs of HBV in the core and S region, indicating that these alterations may convert the virus to an aggressive strain. Moreover, mutations at T-cell and B-cell epitopes located in pre-S1 and pre-S2 proteins may lead to an immune evasion of the virus, likely favoring a more severe clinical course of infection. Furthermore, point and frame shift mutations in the core region increase the viral replication of HBV and help virus to evade from immune system and guarantee its persistence. CONCLUSIONS Fulminant hepatitis B is associated with distinct mutational patterns of HBV, underlining that genomic diversity of the virus is an important factor determining its pathogenicity.
Collapse
Affiliation(s)
- Thomas Mina
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Samad Amini-Bavil-Olyaee
- Department of Molecular Microbiology and Immunology, Harlyne J. Norris Cancer Research Tower, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Frank Tacke
- Department of Medicine III, RWTH-University Hospital Aachen, Aachen, Germany
| | - Piet Maes
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Mahmoud Reza Pourkarim
- Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
- Blood Transfusion Research Centre, High Institute for Research and Education in Transfusion Medicine, Tehran, IR Iran
- Corresponding Author: Mahmoud Reza Pourkarim, Department of Microbiology and Immunology, Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, KU Leuven, P. O. Box: BE-3000, Leuven, Belgium. Tel: +32-16332145, Fax: +32-16332141, E-mail:
| |
Collapse
|
96
|
Fukutani KF, Nascimento-Carvalho CM, Van der Gucht W, Wollants E, Khouri R, Dierckx T, Van Ranst M, Houspie L, Bouzas ML, Oliveira JR, Barral A, Van Weyenbergh J, de Oliveira CI. Pathogen transcriptional profile in nasopharyngeal aspirates of children with acute respiratory tract infection. J Clin Virol 2015. [PMID: 26209405 PMCID: PMC7106536 DOI: 10.1016/j.jcv.2015.06.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
nCounter enables detection of pathogen transcripts in NPA with low RNA input. nCounter detects, in a single reaction, the presence of multiple pathogens in NPA. nCounter displayed a good agreement with Real-Time PCR for RSV.
Background Acute respiratory tract infections (ARI) present a significant morbidity and pose a global health burden. Patients are frequently treated with antibiotics although ARI are most commonly caused by virus, strengthening the need for improved diagnostic methods. Objectives Detect viral and bacterial RNA in nasopharyngeal aspirates (NPA) from children aged 6–23 months with ARI using nCounter. Study design A custom-designed nCounter probeset containing viral and bacterial targets was tested in NPA of ARI patients. Results Initially, spiked control viral RNAs were detectable in ≥6.25 ng input RNA, indicating absence of inhibitors in NPA. nCounter applied to a larger NPA sample (n = 61) enabled the multiplex detection of different pathogens: RNA viruses Parainfluenza virus (PIV 1–3) and RSV A-B in 21%, Human metapneumovirus (hMPV) in 5%, Bocavirus (BoV), CoV, Influenza virus (IV) A in 3% and, Rhinovirus (RV) in 2% of samples, respectively. RSV A-B was confirmed by Real Time PCR (86.2–96.9% agreement). DNA virus (AV) was detected at RNA level, reflecting viral replication, in 10% of samples. Bacterial transcripts from Staphylococcus aureus, Haemophilus influenzae, Streptococcus pneumoniae, Moraxella catarrhalis, Mycoplasma pneumoniae and Chlamydophila pneumoniae were detected in 77, 69, 26, 8, 3 and 2% of samples, respectively. Conclusion nCounter is robust and sensitive for the simultaneous detection of viral (both RNA and DNA) and bacterial transcripts in NPA with low RNA input (<10 ng). This medium-throughput technique will increase our understanding of ARI pathogenesis and may provide an evidence-based approach for the targeted and rational use of antibiotics in pediatric ARI.
Collapse
Affiliation(s)
- Kiyoshi F Fukutani
- Centro de Pesquisas Gonçalo Moniz (CPqGM)-FIOCRUZ, Salvador, BA, Brazil; Post-Graduation Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Brazil
| | - Cristiana M Nascimento-Carvalho
- Post-Graduation Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Brazil; Department of Pediatrics, School of Medicine, Federal University of Bahia, Salvador, BA, Brazil
| | - Winke Van der Gucht
- Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Elke Wollants
- Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Ricardo Khouri
- Centro de Pesquisas Gonçalo Moniz (CPqGM)-FIOCRUZ, Salvador, BA, Brazil; Post-Graduation Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Brazil
| | - Tim Dierckx
- Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Marc Van Ranst
- Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Lieselot Houspie
- Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Maiara L Bouzas
- Post-Graduation Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Brazil
| | - Juliana R Oliveira
- Post-Graduation Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Brazil
| | - Aldina Barral
- Centro de Pesquisas Gonçalo Moniz (CPqGM)-FIOCRUZ, Salvador, BA, Brazil; Post-Graduation Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Brazil; Department of Pathology, School of Medicine, Federal University of Bahia, Salvador, BA, Brazil; Instituto de Investigação em Imunologia, São Paulo, SP, Brazil
| | - Johan Van Weyenbergh
- Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Camila I de Oliveira
- Centro de Pesquisas Gonçalo Moniz (CPqGM)-FIOCRUZ, Salvador, BA, Brazil; Post-Graduation Program in Health Sciences, Federal University of Bahia School of Medicine, Salvador, Brazil; Instituto de Investigação em Imunologia, São Paulo, SP, Brazil.
| |
Collapse
|
97
|
Van Hoeve K, Vandermeulen C, van den Heuvel B, Levtchenko E, Van Ranst M, Mekahli D. SP899OCCURRENCE OF ATYPICAL HEMOLYTIC UREMIC SYNDROME FOLLOWING INFLUENZA B INFECTION. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv203.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
98
|
Zeller M, Heylen E, Damanka S, Pietsch C, Donato C, Tamura T, Kulkarni R, Arora R, Cunliffe N, Maunula L, Potgieter C, Tamim S, Coster SD, Zhirakovskaya E, Bdour S, O'Shea H, Kirkwood CD, Seheri M, Nyaga MM, Mphahlele J, Chitambar SD, Dagan R, Armah G, Tikunova N, Van Ranst M, Matthijnssens J. Emerging OP354-Like P[8] Rotaviruses Have Rapidly Dispersed from Asia to Other Continents. Mol Biol Evol 2015; 32:2060-71. [PMID: 25858434 DOI: 10.1093/molbev/msv088] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The majority of human group A rotaviruses possess the P[8] VP4 genotype. Recently, a genetically distinct subtype of the P[8] genotype, also known as OP354-like P[8] or lineage P[8]-4, emerged in several countries. However, it is unclear for how long the OP354-like P[8] gene has been circulating in humans and how it has spread. In a global collaborative effort 98 (near-)complete OP354-like P[8] VP4 sequences were obtained and used for phylogeographic analysis to determine the viral migration patterns. During the sampling period, 1988-2012, we found that South and East Asia acted as a source from which strains with the OP354-like P[8] gene were seeded to Africa, Europe, and North America. The time to the most recent common ancestor (TMRCA) of all OP354-like P[8] genes was estimated at 1987. However, most OP354-like P[8] strains were found in three main clusters with TMRCAs estimated between 1996 and 2001. The VP7 gene segment of OP354-like P[8] strains showed evidence of frequent reassortment, even in localized epidemics, suggesting that OP354-like P[8] genes behave in a similar manner on the evolutionary level as other P[8] subtypes. The results of this study suggest that OP354-like P[8] strains have been able to disperse globally in a relatively short time period. This, in combination with a relatively large genetic distance to other P[8] subtypes, might result in a lower vaccine effectiveness, underscoring the need for a continued surveillance of OP354-like P[8] strains, especially in countries where rotavirus vaccination programs are in place.
Collapse
Affiliation(s)
- Mark Zeller
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Elisabeth Heylen
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Susan Damanka
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana
| | | | - Celeste Donato
- Enteric Virus Group, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Tsutomu Tamura
- Department of Virology, Niigata Prefectural Institute of Public Health and Environmental Sciences, Niigata, Japan
| | - Ruta Kulkarni
- Enteric Viruses Group, National Institute of Virology, Pune, Maharashtra, India
| | - Ritu Arora
- Enteric Viruses Group, National Institute of Virology, Pune, Maharashtra, India
| | - Nigel Cunliffe
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Leena Maunula
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Christiaan Potgieter
- Department of Biochemistry, Centre for Human Metabonomics, North-West University, Potchefstroom, South Africa Deltamune (Pty) Ltd, Lyttelton, Centurion, South Africa
| | - Sana Tamim
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sarah De Coster
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Elena Zhirakovskaya
- Laboratory of Molecular Microbiology, Institute of Chemical Biology and Fundamental Medicine, Novosibirsk, Russia
| | - Salwa Bdour
- Department of Biological Sciences, Faculty of Science, The University of Jordan, Amman, Jordan
| | - Helen O'Shea
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Cork, Ireland
| | - Carl D Kirkwood
- Enteric Virus Group, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Mapaseka Seheri
- South African Medical Research Council/Diarrhoeal Pathogens Research Unit, Faculty of Health Sciences, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, South Africa
| | - Martin Monene Nyaga
- South African Medical Research Council/Diarrhoeal Pathogens Research Unit, Faculty of Health Sciences, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, South Africa
| | - Jeffrey Mphahlele
- South African Medical Research Council/Diarrhoeal Pathogens Research Unit, Faculty of Health Sciences, Sefako Makgatho Health Sciences University, Medunsa, Pretoria, South Africa
| | - Shobha D Chitambar
- Enteric Viruses Group, National Institute of Virology, Pune, Maharashtra, India
| | - Ron Dagan
- Soroka University Medical Center and the Faculty of Health Sciences, Ben-Gurion University of Negev, Beer Sheva, Israel
| | - George Armah
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, Legon, Ghana
| | - Nina Tikunova
- Laboratory of Molecular Microbiology, Institute of Chemical Biology and Fundamental Medicine, Novosibirsk, Russia
| | - Marc Van Ranst
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| | - Jelle Matthijnssens
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Leuven, Belgium
| |
Collapse
|
99
|
Bonica MB, Zeller M, Van Ranst M, Matthijnssens J, Heylen E. Complete genome analysis of a rabbit rotavirus causing gastroenteritis in a human infant. Viruses 2015; 7:844-56. [PMID: 25690801 PMCID: PMC4353919 DOI: 10.3390/v7020844] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 02/10/2015] [Accepted: 02/13/2015] [Indexed: 12/22/2022] Open
Abstract
Group A rotaviruses (RVA) are responsible for causing infantile diarrhea both in humans and animals. The molecular characteristics of lapine RVA strains are only studied to a limited extent and so far G3P[14] and G3P[22] were found to be the most common G/P-genotypes. During the 2012-2013 rotavirus season in Belgium, a G3P[14] RVA strain was isolated from stool collected from a two-year-old boy. We investigated whether RVA/Human-wt/BEL/BE5028/2012/G3P[14] is completely of lapine origin or the result of reassortment event(s). Phylogenetic analyses of all gene segments revealed the following genotype constellation: G3-P[14]-I2-R2-C2-M3-A9-N2-T6-E5-H3 and indicated that BE5028 probably represents a rabbit to human interspecies transmission able to cause disease in a human child. Interestingly, BE5028 showed a close evolutionary relationship to RVA/Human-wt/BEL/B4106/2000/G3P[14], another lapine-like strain isolated in a Belgian child in 2000. The phylogenetic analysis of the NSP3 segment suggests the introduction of a bovine(-like) NSP3 into the lapine RVA population in the past 12 years. Sequence analysis of NSP5 revealed a head-to-tail partial duplication, combined with two short insertions and a deletion, indicative of the continuous circulation of this RVA lineage within the rabbit population.
Collapse
Affiliation(s)
- Melisa Berenice Bonica
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, B-3000 Leuven, Belgium.
| | - Mark Zeller
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, B-3000 Leuven, Belgium.
| | - Marc Van Ranst
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, B-3000 Leuven, Belgium.
| | - Jelle Matthijnssens
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, B-3000 Leuven, Belgium.
| | - Elisabeth Heylen
- KU Leuven-University of Leuven, Department of Microbiology and Immunology, Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, B-3000 Leuven, Belgium.
| |
Collapse
|
100
|
Matthijnssens J, Ons E, De Coster S, Conceição-Neto N, Gryspeerdt A, Van Ranst M, Raue R. Molecular characterization of equine rotaviruses isolated in Europe in 2013: implications for vaccination. Vet Microbiol 2015; 176:179-85. [PMID: 25637313 PMCID: PMC7126753 DOI: 10.1016/j.vetmic.2015.01.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 01/07/2015] [Accepted: 01/08/2015] [Indexed: 11/23/2022]
Abstract
Diarrhea samples from 65 foals were collected in Europe and screened for rotavirus. From 26 qPCR positive stool samples, 11 could be (partially) genotyped. In addition to the common G3/G14P[12] strains, the rare P[18] genotype was detected. A vaccine based on an inactivated G3P[12] genotype is still relevant in Europe.
Equine group A rotavirus (RVAs) mainly cause disease in foals under the age of 3 months. Only sporadic data are available on the circulation of RVAs in equine populations in Europe. In this study, 65 diarrheic samples from foals under 4 months of age were collected in Belgium (n = 32), Germany (n = 17), Slovenia (n = 5), Sweden (n = 4), Hungary (n = 3), Italy (n = 2), France (n = 1) and The Netherlands (n = 1). Forty percent of these samples (n = 26) were found to be RVA positive by a quantitative RT-PCR assay. The viral load in 11 of these samples was sufficiently high to be (partially) genotyped. G3, G14 and P[12] were the main genotypes detected, and phylogenetic analyses revealed that they were closely related to contemporary equine RVA strains detected in Europe as well as in Brazil and South Africa. Regional variation was observed with only G14 and P[12] being detected in Germany, whereas mainly G3P[12] was encountered in Belgium. Surprisingly the only G14P[12] RVA strain detected in Belgium was also found to possess the very rare P[18] genotype, which has been described only once from equine RVA strain L338 detected in the UK in 1991. Despite the identification of this uncommon P[18] genotype, G3P[12] and G14P[12] RVA strains remained the most important genotypes in Europe during the study period. Based on this finding and the knowledge that G3P[12] and G14P[12] serotypes are partially cross-reactive it can be assumed that a vaccine based on an inactivated virus of the G3P[12] genotype is still relevant in the current European epidemiological situation, although the addition of a G14 strain would most likely be beneficial.
Collapse
Affiliation(s)
- Jelle Matthijnssens
- KU Leuven - University of Leuven, Laboratory of Clinical & Epidemiological Virology, Department of Microbiology and Immunology, Minderbroedersstraat 10, B-3000 Leuven, Belgium.
| | - Ellen Ons
- Zoetis Belgium S.A., Mercuriusstraat 20, B-1930 Zaventem, Belgium.
| | - Sarah De Coster
- KU Leuven - University of Leuven, Laboratory of Clinical & Epidemiological Virology, Department of Microbiology and Immunology, Minderbroedersstraat 10, B-3000 Leuven, Belgium.
| | - Nádia Conceição-Neto
- KU Leuven - University of Leuven, Laboratory of Clinical & Epidemiological Virology, Department of Microbiology and Immunology, Minderbroedersstraat 10, B-3000 Leuven, Belgium.
| | - Annick Gryspeerdt
- Dierengezondheidszorg Vlaanderen, Industrielaan 29, B-8820 Torhout, Belgium.
| | - Marc Van Ranst
- KU Leuven - University of Leuven, Laboratory of Clinical & Epidemiological Virology, Department of Microbiology and Immunology, Minderbroedersstraat 10, B-3000 Leuven, Belgium.
| | - Rudiger Raue
- Zoetis Belgium S.A., Mercuriusstraat 20, B-1930 Zaventem, Belgium.
| |
Collapse
|