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Skudal H, Lorentzen ÅR, Stenstad T, Quist-Paulsen E, Egeland J, Fevang B, Jaioun K, Hansen BÅ, Solheim AM, Tveten Y, Veje M, Eikeland R, Kersten H. Clinical characteristics and factors affecting disease severity in hospitalized tick-borne encephalitis patients in Norway from 2018 to 2022. Eur J Clin Microbiol Infect Dis 2024:10.1007/s10096-024-04855-2. [PMID: 38801484 DOI: 10.1007/s10096-024-04855-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 05/17/2024] [Indexed: 05/29/2024]
Abstract
PURPOSE To describe the clinical characteristics and factors associated with disease severity in a Norwegian cohort of hospitalized patients with tick-borne encephalitis (TBE). METHODS This observational multicenter study included hospitalized patients with TBE in the endemic area in the southeastern region of Norway from 2018 to 2022. Clinical signs and findings from laboratory tests, EEG, CT and MRI scans were recorded. Patient characteristics were compared among those with mild, moderate, and severe TBE, and factors associated with disease severity were identified. RESULTS Nearly all eligible patients were included in the final cohort (153/189 participants, 81%). The median age was 56 years, 63% were men, and 7% were vaccinated against TBE; no participants were fully vaccinated. TBE presented as mild (meningeal) disease in 31% of patients and as moderate or severe (encephalitic) disease in 54% and 14% of patients, respectively. We found that 46% of the patients had a monophasic course, 64% had hyponatremia, and 7% presented with central nervous system (CNS) symptoms without pleocytosis in cerebrospinal fluid (CSF). Dysesthesia, a symptom previously not described, was reported in 10% of the patients. Most objective findings were related to the CNS. Preexisting comorbidities, CRP and CSF protein levels were predictors of more severe disease. CONCLUSION This novel presentation of a large Norwegian cohort supports TBE as a serious disease in the southeastern region of Norway. The majority of hospitalized patients presented with encephalitis, and fewer presented with meningitis. Comorbidities, CRP and CSF protein levels were associated with more severe disease. TRIAL REGISTRATION Prosjekt #2,296,959 - The Norwegian Tick-borne Encephalitis Study - NOTES. Acute phase characteristics and long-term outcomes. - Cristin.
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Affiliation(s)
- Hilde Skudal
- Department of Infectious Diseases, Telemark Hospital Trust, Skien, Norway.
- Institute of Clinical Medicine, Faculty of Medicine, Oslo University Hospital, Oslo, Norway.
| | - Åslaug Rudjord Lorentzen
- Department of Neurology, Sørlandet Hospital Trust, Kristiansand, Norway
- Norwegian National Advisory Unit on Tick-borne Diseases, Sørlandet Hospital Trust, Kristiansand, Norway
| | - Tore Stenstad
- Department of Infectious Diseases, Vestfold Hospital Trust, Tønsberg, Norway
| | | | - Jens Egeland
- Division of Mental Health and Addiction, Vestfold Hospital Trust, Tønsberg, Norway
- Department of Psychology, University of Oslo, Oslo, Norway
| | - Børre Fevang
- Section of Clinical Immunology and Infectious Diseases, Department of Rheumatology Dermatology and Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Keson Jaioun
- Department of Research, Telemark Hospital Trust, Skien, Norway
| | - Bjørn Åsheim Hansen
- Department of Infectious Diseases, Vestfold Hospital Trust, Tønsberg, Norway
| | - Anne Marit Solheim
- Department of Neurology, Sørlandet Hospital Trust, Kristiansand, Norway
- Institute of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Yngvar Tveten
- Department of Clinical Microbiology, Telemark Hospital Trust, Skien, Norway
| | - Malin Veje
- Department of Infectious Diseases, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, Gothenburg, Sweden
| | - Randi Eikeland
- Norwegian National Advisory Unit on Tick-borne Diseases, Sørlandet Hospital Trust, Kristiansand, Norway
- Faculty of Health and Sport Sciences, University of Agder, Grimstad, Norway
| | - Hege Kersten
- Institute of Clinical Medicine, Faculty of Medicine, Oslo University Hospital, Oslo, Norway
- Department of Research, Telemark Hospital Trust, Skien, Norway
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Yonekawa M, Watanabe T, Kogawara O, Yoshii C, Yamaji M, Aizawa M, Erber W, Ito S, Jug B, Koelch D, de Solom R, Lockhart SP. Phase 3 immunogenicity and safety study of a tick-borne encephalitis vaccine in healthy Japanese participants 1 year of age and older. Vaccine 2024; 42:3180-3189. [PMID: 38614954 DOI: 10.1016/j.vaccine.2024.03.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 03/06/2024] [Accepted: 03/25/2024] [Indexed: 04/15/2024]
Abstract
BACKGROUND Tick-borne encephalitis (TBE) virus infects the central nervous system and may lead to severe neurological complications or death. This study assessed immunogenicity, safety, and tolerability of TBE vaccine in Japanese participants 1 year of age and older. METHODS This phase 3, multicenter, single-arm, open-label study was conducted in Japanese adult (≥ 16 years) and pediatric (1-< 16 years) populations. Participants received a single 0.5-mL (adult) or 0.25-mL (pediatric) dose of TBE vaccine at each of 3 visits. The primary endpoint was the proportion of participants who were seropositive (neutralization test [NT] titer ≥ 1:10) 4 weeks after Dose 3. Secondary and exploratory endpoints included NT seropositivity rates 4 weeks after Dose 2, immunoglobulin G (IgG) seropositivity 4 weeks after Doses 2 and 3, NT geometric mean titers (GMTs), IgG geometric mean concentrations (GMCs), and geometric mean fold rises. Primary safety endpoints were frequencies of local reactions, systemic events, adverse events (AEs), and serious AEs. RESULTS Among 100 adult and 65 pediatric participants, 99.0 % and 100.0 % completed the study, respectively. NT seropositivity was achieved in 98.0 % adult and 100.0 % pediatric participants after Dose 3; seropositivity after Dose 2 was 93.0 % and 92.3 %, respectively. In both age groups, IgG seropositivity was ≥ 90.0 % and ≥ 96.0 % after Doses 2 and 3, respectively; GMTs and GMCs were highest 4 weeks after Dose 3. Reactogenicity events were generally mild to moderate in severity and short-lived. AEs were reported by 15.0 % (adult) and 43.1 % (pediatric) of participants. No life-threatening AEs, AEs leading to discontinuation, immediate AEs, related AEs, or deaths were reported. No serious AEs were considered related to TBE vaccine. CONCLUSIONS TBE vaccine elicited robust immune responses in Japanese participants 1 year of age and older. The 3-dose regimen was safe and well tolerated, and findings were consistent with the known safety profile of this TBE vaccine. CLINICALTRIALS gov: NCT04648241.
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Affiliation(s)
| | - Tohru Watanabe
- Watanabe Pediatric Allergy Clinic, Sapporo, Hokkaido, Japan
| | | | | | | | | | - Wilhelm Erber
- Medical Development and Scientific/Clinical Affairs, Pfizer Vaccines, Vienna, Austria
| | - Shuhei Ito
- Vaccine Medical Affairs, Pfizer Japan Inc, Tokyo, Japan
| | - Bogdan Jug
- QC Logistics, Pfizer Manufacturing Austria GmbH, Orth an der Donau, Austria
| | - Doris Koelch
- Vaccines Analytical Development, Pfizer, Orth, Austria
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Rusenova N, Rusenov A, Chervenkov M, Sirakov I. Seroprevalence of West Nile Virus among Equids in Bulgaria in 2022 and Assessment of Some Risk Factors. Vet Sci 2024; 11:209. [PMID: 38787181 PMCID: PMC11126025 DOI: 10.3390/vetsci11050209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/04/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
The aim of this study was to analyze the seroprevalence of West Nile virus (WNV) among equids in Bulgaria, confirm the results of a competitive ELISA versus the virus neutralization test (VNT) and investigate some predisposing factors for WNV seropositivity. A total of 378 serum samples from 15 provinces in northern and southern Bulgaria were tested. The samples originated from 314 horses and 64 donkeys, 135 males and 243 females, aged from 1 to 30 years. IgG and IgM antibodies against WNV protein E were detected by ELISA. ELISA-positive samples were additionally tested via VNT for WNV and Usutu virus. Thirty-five samples were WNV-positive by ELISA (9.26% [CI = 6.45-12.88]), of which 15 were confirmed by VNT; hence, the seroprevalence was 3.97% (CI = 2.22-6.55). No virus-neutralizing antibodies to Usutu virus were detected among the 35 WNV-ELISA-positive equids in Bulgaria. When compared with VNT, ELISA showed 100.0% sensitivity and 94.5% specificity. A statistical analysis showed that the risk factors associated with WNV seropositivity were the region (p < 0.0001), altitude of the locality (p < 0.0001), type of housing (p < 0.0001) and breed (p = 0.0365). The results of the study demonstrate, albeit indirectly, that WNV circulates among equids in northern and southern Bulgaria, indicating that they could be suitable sentinel animals for predicting human cases and determining the risk in these areas or regions of the country.
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Affiliation(s)
- Nikolina Rusenova
- Department of Veterinary Microbiology, Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria
| | - Anton Rusenov
- Department of Internal Diseases, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria;
| | - Mihail Chervenkov
- Faculty of Veterinary Medicine, University of Forestry, 1797 Sofia, Bulgaria;
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Ivo Sirakov
- Department of Medical Microbiology, Faculty of Medicine, Medical University-Sofia, 2 Zdrave Str., 1431 Sofia, Bulgaria;
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Srichawla BS, Manan MR, Kipkorir V, Dhali A, Diebel S, Sawant T, Zia S, Carrion-Alvarez D, Suteja RC, Nurani K, Găman MA. Neuroinvasion of emerging and re-emerging arboviruses: A scoping review. SAGE Open Med 2024; 12:20503121241229847. [PMID: 38711470 PMCID: PMC11072077 DOI: 10.1177/20503121241229847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 01/16/2024] [Indexed: 05/08/2024] Open
Abstract
Background Arboviruses are RNA viruses and some have the potential to cause neuroinvasive disease and are a growing threat to global health. Objectives Our objective is to identify and map all aspects of arbovirus neuroinvasive disease, clarify key concepts, and identify gaps within our knowledge with appropriate future directions related to the improvement of global health. Methods Sources of Evidence: A scoping review of the literature was conducted using PubMed, Scopus, ScienceDirect, and Hinari. Eligibility Criteria: Original data including epidemiology, risk factors, neurological manifestations, neuro-diagnostics, management, and preventive measures related to neuroinvasive arbovirus infections was obtained. Sources of evidence not reporting on original data, non-English, and not in peer-reviewed journals were removed. Charting Methods: An initial pilot sample of 30 abstracts were reviewed by all authors and a Cohen's kappa of κ = 0.81 (near-perfect agreement) was obtained. Records were manually reviewed by two authors using the Rayyan QCRI software. Results A total of 171 records were included. A wide array of neurological manifestations can occur most frequently, including parkinsonism, encephalitis/encephalopathy, meningitis, flaccid myelitis, and Guillain-Barré syndrome. Magnetic resonance imaging of the brain often reveals subcortical lesions, sometimes with diffusion restriction consistent with acute ischemia. Vertical transmission of arbovirus is most often secondary to the Zika virus. Neurological manifestations of congenital Zika syndrome, include microcephaly, failure to thrive, intellectual disability, and seizures. Cerebrospinal fluid analysis often shows lymphocytic pleocytosis, elevated albumin, and protein consistent with blood-brain barrier dysfunction. Conclusions Arbovirus infection with neurological manifestations leads to increased morbidity and mortality. Risk factors for disease include living and traveling in an arbovirus endemic zone, age, pregnancy, and immunosuppressed status. The management of neuroinvasive arbovirus disease is largely supportive and focuses on specific neurological complications. There is a need for therapeutics and currently, management is based on disease prevention and limiting zoonosis.
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Affiliation(s)
- Bahadar S Srichawla
- Department of Neurology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | | | - Vincent Kipkorir
- Department of Human Anatomy and Physiology, University of Nairobi, Nairobi, Kenya
| | - Arkadeep Dhali
- Department of Internal Medicine, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Sebastian Diebel
- Department of Family Medicine, Northern Ontario School of Medicine University, Sudbury, ON, Canada
| | - Tirtha Sawant
- Department of Neurology, Spartan Health Sciences University, Spartan Drive St, Saint Lucia
| | - Subtain Zia
- Department of Infectious Diseases, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | | | - Richard C Suteja
- Faculty of Medicine, Udayana University, Kampus Bukit, Jl, Raya Kampus Unud Jimbaran, Kec, Kuta Sel, Kabupaten Badung, Bukit Jimbaran, Bali, Indonesia
| | - Khulud Nurani
- Department of Human Anatomy and Physiology, University of Nairobi, Nairobi, Kenya
| | - Mihnea-Alexandru Găman
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, București, Romania
- Bucharest, Romania and Department of Hematology, Center of Hematology and Bone Marrow Transplantation, Fundeni Clinical Institute, București, Romania
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Wongchitrat P, Chanmee T, Govitrapong P. Molecular Mechanisms Associated with Neurodegeneration of Neurotropic Viral Infection. Mol Neurobiol 2024; 61:2881-2903. [PMID: 37946006 PMCID: PMC11043213 DOI: 10.1007/s12035-023-03761-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/31/2023] [Indexed: 11/12/2023]
Abstract
Viral infections of the central nervous system (CNS) cause variable outcomes from acute to severe neurological sequelae with increased morbidity and mortality. Viral neuroinvasion directly or indirectly induces encephalitis via dysregulation of the immune response and contributes to the alteration of neuronal function and the degeneration of neuronal cells. This review provides an overview of the cellular and molecular mechanisms of virus-induced neurodegeneration. Neurotropic viral infections influence many aspects of neuronal dysfunction, including promoting chronic inflammation, inducing cellular oxidative stress, impairing mitophagy, encountering mitochondrial dynamics, enhancing metabolic rewiring, altering neurotransmitter systems, and inducing misfolded and aggregated pathological proteins associated with neurodegenerative diseases. These pathogenetic mechanisms create a multidimensional injury of the brain that leads to specific neuronal and brain dysfunction. The understanding of the molecular mechanisms underlying the neurophathogenesis associated with neurodegeneration of viral infection may emphasize the strategies for prevention, protection, and treatment of virus infection of the CNS.
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Affiliation(s)
- Prapimpun Wongchitrat
- Center for Research Innovation and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, 999 Phutthamonthon 4 Road, Salaya, Phutthamonthon, Nakhon Pathom, 73170, Thailand.
| | - Theerawut Chanmee
- Department of Clinical Chemistry, Faculty of Medical Technology, Mahidol University, Salaya, Nakhon Pathom, Thailand
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Litov AG, Shchetinin AM, Kholodilov IS, Belova OA, Gadzhikurbanov MN, Ivannikova AY, Kovpak AA, Gushchin VA, Karganova GG. High-Throughput Sequencing Reveals Three Rhabdoviruses Persisting in the IRE/CTVM19 Cell Line. Viruses 2024; 16:576. [PMID: 38675918 PMCID: PMC11054507 DOI: 10.3390/v16040576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 03/28/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024] Open
Abstract
Cell cultures derived from ticks have become a commonly used tool for the isolation and study of tick-borne pathogens and tick biology. The IRE/CTVM19 cell line, originating from embryos of Ixodes ricinus, is one such line. Previously, reovirus-like particles, as well as sequences with similarity to rhabdoviruses and iflaviruses, were detected in the IRE/CTVM19 cell line, suggesting the presence of multiple persisting viruses. Subsequently, the full genome of an IRE/CTVM19-associated rhabdovirus was recovered from a cell culture during the isolation of the Alongshan virus. In the current work, we used high-throughput sequencing to describe a virome of the IRE/CTVM19 cell line. In addition to the previously detected IRE/CTVM19-associated rhabdovirus, two rhabdoviruses were detected: Chimay rhabdovirus and Norway mononegavirus 1. In the follow-up experiments, we were able to detect both positive and negative RNA strands of the IRE/CTVM19-associated rhabdovirus and Norway mononegavirus 1 in the IRE/CTVM19 cells, suggesting their active replication in the cell line. Passaging attempts in cell lines of mammalian origin failed for all three discovered rhabdoviruses.
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Affiliation(s)
- Alexander G. Litov
- Laboratory of Biology of Arboviruses, FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), 108819 Moscow, Russia; (A.G.L.); (I.S.K.); (O.A.B.); (M.N.G.)
- Institute for Translational Medicine and Biotechnology, Sechenov University, 119991 Moscow, Russia
| | - Alexey M. Shchetinin
- Pathogenic Microorganisms Variability Laboratory, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (A.M.S.); (V.A.G.)
| | - Ivan S. Kholodilov
- Laboratory of Biology of Arboviruses, FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), 108819 Moscow, Russia; (A.G.L.); (I.S.K.); (O.A.B.); (M.N.G.)
| | - Oxana A. Belova
- Laboratory of Biology of Arboviruses, FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), 108819 Moscow, Russia; (A.G.L.); (I.S.K.); (O.A.B.); (M.N.G.)
| | - Magomed N. Gadzhikurbanov
- Laboratory of Biology of Arboviruses, FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), 108819 Moscow, Russia; (A.G.L.); (I.S.K.); (O.A.B.); (M.N.G.)
- Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Anna Y. Ivannikova
- Laboratory of Biology of Arboviruses, FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), 108819 Moscow, Russia; (A.G.L.); (I.S.K.); (O.A.B.); (M.N.G.)
| | - Anastasia A. Kovpak
- Laboratory of Biochemistry, FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), 108819 Moscow, Russia;
| | - Vladimir A. Gushchin
- Pathogenic Microorganisms Variability Laboratory, Gamaleya Federal Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (A.M.S.); (V.A.G.)
- Faculty of Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Galina G. Karganova
- Laboratory of Biology of Arboviruses, FSASI “Chumakov FSC R&D IBP RAS” (Institute of Poliomyelitis), 108819 Moscow, Russia; (A.G.L.); (I.S.K.); (O.A.B.); (M.N.G.)
- Institute for Translational Medicine and Biotechnology, Sechenov University, 119991 Moscow, Russia
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7
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Brisse M, Ly H. Langat virus, a prototypic tick-borne encephalitis virus, impacts IL-6 signaling by downregulating gp130 expression. J Med Virol 2024; 96:e29572. [PMID: 38533946 DOI: 10.1002/jmv.29572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 03/16/2024] [Accepted: 03/18/2024] [Indexed: 03/28/2024]
Affiliation(s)
- Morgan Brisse
- Viral Immunity and Pathogenesis Unit, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Hinh Ly
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA
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8
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Zidovec-Lepej S, Bodulić K, Bogdanic M, Gorenec L, Savic V, Grgic I, Sabadi D, Santini M, Radmanic Matotek L, Kucinar J, Barbic L, Zmak L, Ferenc T, Stevanovic V, Antolasic L, Milasincic L, Hruskar Z, Vujica Ferenc M, Vilibic-Cavlek T. Proinflammatory Chemokine Levels in Cerebrospinal Fluid of Patients with Neuroinvasive Flavivirus Infections. Microorganisms 2024; 12:657. [PMID: 38674602 PMCID: PMC11052399 DOI: 10.3390/microorganisms12040657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/17/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
Tick-borne encephalitis virus (TBEV) and West Nile virus (WNV) are the most important neuroinvasive arboviruses detected in Europe. In this study, we analyzed cerebrospinal fluid (CSF) concentrations of 12 proinflammatory chemokines (CCL2, CCL3, CCL4, CCL11, CCL17, CCL20, CXCL1, CXCL5, CXCL8, CXCL9, CXCL10, and CXCL11) in 77 patients with neuroinvasive diseases (NIDs). Flavivirus infection was confirmed in 62 patients (TBEV and WNV in 31 patients each), while in 15 patients the etiology of NID was not determined (NDE). Similar patterns of high-level expression of chemokines regulating monocyte/macrophage responses (CCL2), neutrophil recruitment (CXCL1 and CXCL8), and interferon-inducible chemoattractants for leukocytes (CXCL10 and CXCL11) have been observed in WNV and TBEV groups. None of the tested chemokines significantly differed between patients with TBEV or WNV. Concentrations of CCL17, CCL20, CXCL5, CXCL10, and CXCL11 were significantly lower in both WNV and TBEV groups compared to NID NDE patients. The logistic regression model showed that CSF concentrations of CXCL11, CXCL5, and CXCL10 could potentially be used for the classification of patients into the WNV or TBEV group versus groups with other NIDs. This study identified, for the first time, similar patterns of CSF chemokine expression in WNV and TBEV infections, suggesting common immunopathogenic mechanisms in neuroinvasive flavivirus infections that should be further evaluated.
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Affiliation(s)
- Snjezana Zidovec-Lepej
- Department of Immunological and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic”, 10000 Zagreb, Croatia; (S.Z.-L.); (L.G.); (I.G.); (L.R.M.)
| | - Kristian Bodulić
- Research Department, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic”, 10000 Zagreb, Croatia;
| | - Maja Bogdanic
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia; (M.B.); (L.A.); (L.M.); (Z.H.)
| | - Lana Gorenec
- Department of Immunological and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic”, 10000 Zagreb, Croatia; (S.Z.-L.); (L.G.); (I.G.); (L.R.M.)
| | - Vladimir Savic
- Poultry Center, Croatian Veterinary Institute, 10000 Zagreb, Croatia;
| | - Ivana Grgic
- Department of Immunological and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic”, 10000 Zagreb, Croatia; (S.Z.-L.); (L.G.); (I.G.); (L.R.M.)
| | - Dario Sabadi
- Department of Infectious Diseases, Clinical Hospital Center Osijek, 31000 Osijek, Croatia;
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
| | - Marija Santini
- Department for Infections in Immunocompromised Patients, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic”, 10000 Zagreb, Croatia;
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Leona Radmanic Matotek
- Department of Immunological and Molecular Diagnostics, University Hospital for Infectious Diseases “Dr. Fran Mihaljevic”, 10000 Zagreb, Croatia; (S.Z.-L.); (L.G.); (I.G.); (L.R.M.)
| | - Jasmina Kucinar
- Department of Serology and Immunology, Istria County Institute of Public Health, 52100 Pula, Croatia;
| | - Ljubo Barbic
- Department of Microbiology and Infectious Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, 10000 Zagreb, Croatia; (L.B.); (V.S.)
| | - Ljiljana Zmak
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
- Department of Microbiology, Croatian Institute of Public Health, 10000 Zagreb, Croatia
| | - Thomas Ferenc
- Department of Diagnostic and Interventional Radiology, Merkur University Hospital, 10000 Zagreb, Croatia
| | - Vladimir Stevanovic
- Department of Microbiology and Infectious Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, 10000 Zagreb, Croatia; (L.B.); (V.S.)
| | - Ljiljana Antolasic
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia; (M.B.); (L.A.); (L.M.); (Z.H.)
| | - Ljiljana Milasincic
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia; (M.B.); (L.A.); (L.M.); (Z.H.)
| | - Zeljka Hruskar
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia; (M.B.); (L.A.); (L.M.); (Z.H.)
| | - Mateja Vujica Ferenc
- Department of Obstetrics and Gynecology, University Hospital Centre Zagreb, 10000 Zagreb, Croatia;
| | - Tatjana Vilibic-Cavlek
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia; (M.B.); (L.A.); (L.M.); (Z.H.)
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
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Lee EE, Mejia M, Matthews LA, Lee F, Shah KM, Schoggins JW, Vandergriff TW, Yancey KB, Thomas C, Wang RC. West Nile virus encephalitis presenting with a vesicular dermatitis. JAAD Case Rep 2024; 45:117-122. [PMID: 38464779 PMCID: PMC10920127 DOI: 10.1016/j.jdcr.2023.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024] Open
Affiliation(s)
- Eunice E. Lee
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
| | - Maria Mejia
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
| | | | - Francesca Lee
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas
| | - Kishan M. Shah
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
| | - John W. Schoggins
- Department of Microbiology, UT Southwestern Medical Center, Dallas, Texas
| | - Travis W. Vandergriff
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
- Department of Pathology, UT Southwestern Medical Center, Dallas, Texas
| | - Kim B. Yancey
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
| | - Cristina Thomas
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas
| | - Richard C. Wang
- Department of Dermatology, UT Southwestern Medical Center, Dallas, Texas
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Valle C, Shrestha S, Godeke GJ, Hoogerwerf MN, Reimerink J, Eggink D, Reusken C. Multiplex Serology for Sensitive and Specific Flavivirus IgG Detection: Addition of Envelope Protein Domain III to NS1 Increases Sensitivity for Tick-Borne Encephalitis Virus IgG Detection. Viruses 2024; 16:286. [PMID: 38400061 PMCID: PMC10892675 DOI: 10.3390/v16020286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/31/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
Tick-borne encephalitis is a vaccine-preventable disease of concern for public health in large parts of Europe, with EU notification rates increasing since 2018. It is caused by the orthoflavivirus tick-borne encephalitis virus (TBEV) and a diagnosis of infection is mainly based on serology due to its short viremic phase, often before symptom onset. The interpretation of TBEV serology is hampered by a history of orthoflavivirus vaccination and by previous infections with related orthoflaviviruses. Here, we sought to improve TBEV sero-diagnostics using an antigen combination of in-house expressed NS1 and EDIII in a multiplex, low-specimen-volume set-up for the detection of immune responses to TBEV and other clinically important orthoflaviviruses (i.e., West Nile virus, dengue virus, Japanese encephalitis virus, Usutu virus and Zika virus). We show that the combined use of NS1 and EDIII results in both a specific and sensitive test for the detection of TBEV IgG for patient diagnostics, vaccination responses and in seroprevalence studies. This novel approach potentially allows for a low volume-based, simultaneous analysis of IgG responses to a range of orthoflaviviruses with overlapping geographic circulations and clinical manifestations.
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Affiliation(s)
- Coralie Valle
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands (M.N.H.); (J.R.)
- Unité des Virus Emergents (UVE), Aix-Marseille Université, IRD 190, Inserm 1207, 13005 Marseille, France
| | - Sandhya Shrestha
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands (M.N.H.); (J.R.)
| | - Gert-Jan Godeke
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands (M.N.H.); (J.R.)
| | - Marieke N. Hoogerwerf
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands (M.N.H.); (J.R.)
| | - Johan Reimerink
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands (M.N.H.); (J.R.)
| | - Dirk Eggink
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands (M.N.H.); (J.R.)
| | - Chantal Reusken
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands (M.N.H.); (J.R.)
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11
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Vilibic-Cavlek T, Krcmar S, Bogdanic M, Tomljenovic M, Barbic L, Roncevic D, Sabadi D, Vucelja M, Santini M, Hunjak B, Stevanovic V, Boljfetic M, Bjedov L, Masovic V, Potocnik-Hunjadi T, Lakoseljac D, Al-Mufleh M, Savic V. An Overview of Tick-Borne Encephalitis Epidemiology in Endemic Regions of Continental Croatia, 2017-2023. Microorganisms 2024; 12:386. [PMID: 38399790 PMCID: PMC10891638 DOI: 10.3390/microorganisms12020386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 02/08/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Tick-borne encephalitis (TBE) represents an important public health problem in Europe. We analyzed the epidemiology of TBE based on data from humans, animals, and Ixodes ricinus ticks in endemic regions of continental Croatia. In the period from 2017 to 2023, cerebrospinal fluid (CSF) and serum samples of 684 patients with neuroinvasive diseases, 2240 horse serum samples, and 300 sheep serum samples were tested for TBEV. In addition, 8751 I. ricinus ticks were collected. CSF samples were tested using RT-PCR. Serological tests (serum, CSF) were performed using commercial ELISA, with confirmation of cross-reactive samples by a virus neutralization test. Eighty-four autochthonous human TBEV cases were confirmed. The majority of patients were in the age group of 40-69 years (58.3%) with a male predominance (70.2%). TBE showed a bimodal seasonality with a large peak in April-August and a small one in October-November. In addition to humans, TBEV IgG antibodies were found in 12.2% of horses and 9.7% of sheep. Seasonal tick abundance corresponds to the reported number of human infections. Continental Croatia is still an active natural focus of TBE. Continuous monitoring of infections in humans, sentinel animals, and ticks is needed for the implementation of preventive measures.
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Affiliation(s)
- Tatjana Vilibic-Cavlek
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia;
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Stjepan Krcmar
- Department of Biology, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia;
| | - Maja Bogdanic
- Department of Virology, Croatian Institute of Public Health, 10000 Zagreb, Croatia;
| | - Morana Tomljenovic
- Department of Epidemiology, Teaching Institute of Public Health of the Primorje-Gorski Kotar County, 51000 Rijeka, Croatia; (M.T.); (D.R.); (D.L.)
- Department of Social Medicine and Epidemiology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Ljubo Barbic
- Department of Microbiology and Infectious Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, 10000 Zagreb, Croatia; (L.B.); (V.S.); (V.M.)
| | - Dobrica Roncevic
- Department of Epidemiology, Teaching Institute of Public Health of the Primorje-Gorski Kotar County, 51000 Rijeka, Croatia; (M.T.); (D.R.); (D.L.)
- Department of Public Health, Faculty of Health Studies, University of Rijeka, 51000 Rijeka, Croatia
| | - Dario Sabadi
- Department of Infectious Diseases, Clinical Hospital Center Osijek, 31000 Osijek, Croatia;
- Medical Faculty, University of Osijek, 31000 Osijek, Croatia
| | - Marko Vucelja
- Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, University of Zagreb, 10000 Zagreb, Croatia; (M.V.); (M.B.); (L.B.)
| | - Marija Santini
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
- University Hospital for Infectious Diseases “Dr. Fran Mihaljevic”, 10000 Zagreb, Croatia
| | - Blazenka Hunjak
- Department of Bacteriology, Croatian Institute of Public Health, 10000 Zagreb, Croatia;
- Department of Microbiology, University of Applied Health Sciences, 10000 Zagreb, Croatia
| | - Vladimir Stevanovic
- Department of Microbiology and Infectious Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, 10000 Zagreb, Croatia; (L.B.); (V.S.); (V.M.)
| | - Marko Boljfetic
- Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, University of Zagreb, 10000 Zagreb, Croatia; (M.V.); (M.B.); (L.B.)
| | - Linda Bjedov
- Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, University of Zagreb, 10000 Zagreb, Croatia; (M.V.); (M.B.); (L.B.)
| | - Viktor Masovic
- Department of Microbiology and Infectious Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, 10000 Zagreb, Croatia; (L.B.); (V.S.); (V.M.)
| | | | - Danijela Lakoseljac
- Department of Epidemiology, Teaching Institute of Public Health of the Primorje-Gorski Kotar County, 51000 Rijeka, Croatia; (M.T.); (D.R.); (D.L.)
- Department of Public Health, Faculty of Health Studies, University of Rijeka, 51000 Rijeka, Croatia
| | - Mahmoud Al-Mufleh
- Department of Infectious Diseases, County Hospital Cakovec, 40000 Cakovec, Croatia;
| | - Vladimir Savic
- Poultry Center, Croatian Veterinary Institute, 10000 Zagreb, Croatia
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12
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Rani A, Ergün S, Karnati S, Jha HC. Understanding the link between neurotropic viruses, BBB permeability, and MS pathogenesis. J Neurovirol 2024; 30:22-38. [PMID: 38189894 DOI: 10.1007/s13365-023-01190-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/04/2023] [Accepted: 12/12/2023] [Indexed: 01/09/2024]
Abstract
Neurotropic viruses can infiltrate the CNS by crossing the blood-brain barrier (BBB) through various mechanisms including paracellular, transcellular, and "Trojan horse" mechanisms during leukocyte diapedesis. These viruses belong to several families, including retroviruses; human immunodeficiency virus type 1 (HIV-1), flaviviruses; Japanese encephalitis (JEV); and herpesviruses; herpes simplex virus type 1 (HSV-1), Epstein-Barr virus (EBV), and mouse adenovirus 1 (MAV-1). For entering the brain, viral proteins act upon the tight junctions (TJs) between the brain microvascular endothelial cells (BMECs). For instance, HIV-1 proteins, such as glycoprotein 120, Nef, Vpr, and Tat, disrupt the BBB and generate a neurotoxic effect. Recombinant-Tat triggers amendments in the BBB by decreasing expression of the TJ proteins such as claudin-1, claudin-5, and zona occludens-1 (ZO-1). Thus, the breaching of BBB has been reported in myriad of neurological diseases including multiple sclerosis (MS). Neurotropic viruses also exhibit molecular mimicry with several myelin sheath proteins, i.e., antibodies against EBV nuclear antigen 1 (EBNA1) aa411-426 cross-react with MBP and EBNA1 aa385-420 was found to be associated with MS risk haplotype HLA-DRB1*150. Notably, myelin protein epitopes (PLP139-151, MOG35-55, and MBP87-99) are being used to generate model systems for MS such as experimental autoimmune encephalomyelitis (EAE) to understand the disease mechanism and therapeutics. Viruses like Theiler's murine encephalomyelitis virus (TMEV) are also commonly used to generate EAE. Altogether, this review provide insights into the viruses' association with BBB leakiness and MS along with possible mechanistic details which could potentially use for therapeutics.
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Affiliation(s)
- Annu Rani
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Süleyman Ergün
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University Würzburg, Würzburg, 97070, Germany
| | - Srikanth Karnati
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University Würzburg, Würzburg, 97070, Germany
| | - Hem Chandra Jha
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India.
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13
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Gonzalo-Nadal V, Kohl A, Rocchi M, Brennan B, Hughes J, Nichols J, Da Silva Filipe A, Dunlop JI, Fares M, Clark JJ, Tandavanitj R, Patel AH, Cloquell-Miro A, Bongers J, Deacon J, Kaczmarska A, Stalin C, Liatis T, Irving J, Gutierrez-Quintana R. Suspected tick-borne flavivirus meningoencephalomyelitis in dogs from the UK: six cases (2021). J Small Anim Pract 2024; 65:132-143. [PMID: 37956993 DOI: 10.1111/jsap.13682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/30/2023] [Accepted: 10/01/2023] [Indexed: 11/21/2023]
Abstract
OBJECTIVES Tick-borne encephalitis virus and louping ill virus are neurotropic flaviviruses transmitted by ticks. Epidemiologically, tick-borne encephalitis is endemic in Europe whereas louping ill's predominant geographical distribution is the UK. Rarely, these flaviviruses affect dogs causing neurological signs. This case series aimed to describe the clinical, clinicopathological, and imaging findings, as well as the outcomes in six dogs with meningoencephalitis and/or meningomyelitis caused by a flavivirus in the UK in 2021. MATERIALS AND METHODS Observational retrospective case-series study. Clinical data were retrieved from medical records of dogs with positive serological or immunohistochemical results from three different institutions from spring to winter 2021. RESULTS Six dogs were included in the study. All dogs presented an initial phase of pyrexia and/or lethargy followed by progressive signs of spinal cord and/or intracranial disease. Magnetic resonance imaging showed bilateral and symmetrical lesions affecting the grey matter of the thalamus, pons, medulla oblongata, and thoracic or lumbar intumescences with none or mild parenchymal and meningeal contrast enhancement. Serology for tick-borne encephalitis virus was positive in five dogs with the presence of seroconversion in two dogs. The viral distinction between flaviviruses was not achieved. One dog with negative serology presented positive immunohistochemistry at post-mortem examination. Three dogs survived but presented neurological sequelae. Three dogs were euthanased due to the rapid progression of the clinical signs or static neurological signs. CLINICAL SIGNIFICANCE These cases raise awareness of the presence of tick-borne encephalitis as an emergent disease or the increased prevalence of louping ill virus affecting dogs in the UK.
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Affiliation(s)
- V Gonzalo-Nadal
- Division of Small Animal Clinical Sciences, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - A Kohl
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - M Rocchi
- Moredun Research Institute, Midlothian, UK
| | - B Brennan
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - J Hughes
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - J Nichols
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | | | - J I Dunlop
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - M Fares
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - J J Clark
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - R Tandavanitj
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - A H Patel
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - A Cloquell-Miro
- Division of Small Animal Clinical Sciences, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - J Bongers
- Division of Small Animal Clinical Sciences, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Moorview Vets, Cramlington, UK
| | | | - A Kaczmarska
- Division of Small Animal Clinical Sciences, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - C Stalin
- Division of Small Animal Clinical Sciences, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Moorview Vets, Cramlington, UK
| | - T Liatis
- Queen Mother Hospital for Animals, Royal Veterinary College, University of London, London, UK
| | - J Irving
- Pathobiology and Population Sciences, Royal Veterinary College, Hatfield, Hertfordshire, UK
- Harper & Keele Veterinary School, Newport, Shropshire, UK
| | - R Gutierrez-Quintana
- Division of Small Animal Clinical Sciences, School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
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14
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Ackermann-Gäumann R, Lang P, Zens KD. Defining the "Correlate(s) of Protection" to tick-borne encephalitis vaccination and infection - key points and outstanding questions. Front Immunol 2024; 15:1352720. [PMID: 38318179 PMCID: PMC10840404 DOI: 10.3389/fimmu.2024.1352720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/05/2024] [Indexed: 02/07/2024] Open
Abstract
Tick-borne Encephalitis (TBE) is a severe disease of the Central Nervous System (CNS) caused by the tick-borne encephalitis virus (TBEV). The generation of protective immunity after TBEV infection or TBE vaccination relies on the integrated responses of many distinct cell types at distinct physical locations. While long-lasting memory immune responses, in particular, form the basis for the correlates of protection against many diseases, these correlates of protection have not yet been clearly defined for TBE. This review addresses the immune control of TBEV infection and responses to TBE vaccination. Potential correlates of protection and the durability of protection against disease are discussed, along with outstanding questions in the field and possible areas for future research.
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Affiliation(s)
- Rahel Ackermann-Gäumann
- Microbiologie, ADMED Analyses et Diagnostics Médicaux, La Chaux-de-Fonds, Switzerland
- Swiss National Reference Center for Tick-transmitted Diseases, La Chaux-de-Fonds, Switzerland
| | - Phung Lang
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Kyra D. Zens
- Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
- Institute for Experimental Immunology, University of Zurich, Zurich, Switzerland
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15
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Kubinski M, Beicht J, Gerlach T, Aregay A, Osterhaus ADME, Tscherne A, Sutter G, Prajeeth CK, Rimmelzwaan GF. Immunity to Tick-Borne Encephalitis Virus NS3 Protein Induced with a Recombinant Modified Vaccinia Virus Ankara Fails to Afford Mice Protection against TBEV Infection. Vaccines (Basel) 2024; 12:105. [PMID: 38276677 PMCID: PMC10819467 DOI: 10.3390/vaccines12010105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
Tick-borne encephalitis (TBE) is a serious neurological disease caused by TBE virus (TBEV). Because antiviral treatment options are not available, vaccination is the key prophylactic measure against TBEV infections. Despite the availability of effective vaccines, cases of vaccination breakthrough infections have been reported. The multienzymatic non-structural protein 3 (NS3) of orthoflaviviruses plays an important role in polyprotein processing and virus replication. In the present study, we evaluated NS3 of TBEV as a potential vaccine target for the induction of protective immunity. To this end, a recombinant modified vaccinia virus Ankara that drives the expression of the TBEV NS3 gene (MVA-NS3) was constructed. MVA-NS3 was used to immunize C57BL/6 mice. It induced NS3-specific immune responses, in particular T cell responses, especially against the helicase domain of NS3. However, MVA-NS3-immunized mice were not protected from subsequent challenge infection with a lethal dose of the TBEV strain Neudoerfl, indicating that in contrast to immunity to prME and NS1, NS3-specific immunity is not an independent correlate of protection against TBEV in this mouse model.
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Affiliation(s)
- Mareike Kubinski
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; (M.K.); (J.B.); (T.G.); (A.A.); (A.D.M.E.O.); (C.K.P.)
| | - Jana Beicht
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; (M.K.); (J.B.); (T.G.); (A.A.); (A.D.M.E.O.); (C.K.P.)
| | - Thomas Gerlach
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; (M.K.); (J.B.); (T.G.); (A.A.); (A.D.M.E.O.); (C.K.P.)
| | - Amare Aregay
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; (M.K.); (J.B.); (T.G.); (A.A.); (A.D.M.E.O.); (C.K.P.)
| | - Albert D. M. E. Osterhaus
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; (M.K.); (J.B.); (T.G.); (A.A.); (A.D.M.E.O.); (C.K.P.)
| | - Alina Tscherne
- Division of Virology, Institute for Infectious Diseases and Zoonoses, Ludwig Maximilian University Munich, Sonnenstraße 24, 85764 Oberschleißheim, Germany; (A.T.)
- German Center for Infection Research (DZIF), Partner Site Munich, 80802 Munich, Germany
| | - Gerd Sutter
- Division of Virology, Institute for Infectious Diseases and Zoonoses, Ludwig Maximilian University Munich, Sonnenstraße 24, 85764 Oberschleißheim, Germany; (A.T.)
- German Center for Infection Research (DZIF), Partner Site Munich, 80802 Munich, Germany
| | - Chittappen Kandiyil Prajeeth
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; (M.K.); (J.B.); (T.G.); (A.A.); (A.D.M.E.O.); (C.K.P.)
| | - Guus F. Rimmelzwaan
- Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany; (M.K.); (J.B.); (T.G.); (A.A.); (A.D.M.E.O.); (C.K.P.)
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16
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Jung H, Choi CH, Lee M, Kim SY, Aknazarov B, Nyrgaziev R, Atabekova N, Jetigenov E, Chung YS, Lee HI. Molecular Detection and Phylogenetic Analysis of Tick-Borne Encephalitis Virus from Ticks Collected from Cattle in Kyrgyzstan, 2023. Viruses 2024; 16:107. [PMID: 38257807 PMCID: PMC10821214 DOI: 10.3390/v16010107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Ticks are important vectors of the tick-borne encephalitis virus (TBEV). In Kyrgyzstan, the livestock farming trade and nomadic lifestyle enable tick-borne diseases to be imported from neighboring countries, but there are few relevant studies. In this study, we collected 40 ticks from cattle in Kyrgyzstan. Molecular marker analysis identified the ticks as Ixodes persulcatus (97.5%; n = 39) and Haemaphysalis punctata (2.5%; n = 1). Real-time PCR screening revealed two ticks to be positive for TBEV, but only one tick was amplified using nested PCR targeting the TBEV envelope (E) and non-structure 5 (NS5) gene. The obtained sequences belonged to the TBEV Siberian subtype and phylogenetic tree analysis results confirmed that the virus was related to the Bosnia strain. We also performed next-generation sequencing, which confirmed the TBEV Siberian subtype. Continuous research and surveillance of TBEV in Kyrgyzstan are required to provide further information on tick-borne diseases.
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Affiliation(s)
- Haneul Jung
- Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency (KDCA), Cheongju 28159, Republic of Korea; (H.J.); (S.-Y.K.)
| | - Chi-Hwan Choi
- Division of High-Risk Pathogens, Korea Disease Control and Prevention Agency (KDCA), Cheongju 28159, Republic of Korea; (C.-H.C.); (M.L.); (Y.-S.C.)
| | - Minji Lee
- Division of High-Risk Pathogens, Korea Disease Control and Prevention Agency (KDCA), Cheongju 28159, Republic of Korea; (C.-H.C.); (M.L.); (Y.-S.C.)
| | - Seong-Yoon Kim
- Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency (KDCA), Cheongju 28159, Republic of Korea; (H.J.); (S.-Y.K.)
| | - Bekbolsun Aknazarov
- Faculty of Veterinary Medicine, Kyrgyz National Agrarian University Named after K. I. Skryabin, Bishkek 720005, Kyrgyzstan; (B.A.); (R.N.); (N.A.); (E.J.)
| | - Rysbek Nyrgaziev
- Faculty of Veterinary Medicine, Kyrgyz National Agrarian University Named after K. I. Skryabin, Bishkek 720005, Kyrgyzstan; (B.A.); (R.N.); (N.A.); (E.J.)
| | - Nurzina Atabekova
- Faculty of Veterinary Medicine, Kyrgyz National Agrarian University Named after K. I. Skryabin, Bishkek 720005, Kyrgyzstan; (B.A.); (R.N.); (N.A.); (E.J.)
| | - Elmurat Jetigenov
- Faculty of Veterinary Medicine, Kyrgyz National Agrarian University Named after K. I. Skryabin, Bishkek 720005, Kyrgyzstan; (B.A.); (R.N.); (N.A.); (E.J.)
| | - Yoon-Seok Chung
- Division of High-Risk Pathogens, Korea Disease Control and Prevention Agency (KDCA), Cheongju 28159, Republic of Korea; (C.-H.C.); (M.L.); (Y.-S.C.)
| | - Hee-Il Lee
- Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency (KDCA), Cheongju 28159, Republic of Korea; (H.J.); (S.-Y.K.)
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17
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Albinsson B, Hoffman T, Kolstad L, Bergström T, Bogdanovic G, Heydecke A, Hägg M, Kjerstadius T, Lindroth Y, Petersson A, Stenberg M, Vene S, Ellström P, Rönnberg B, Lundkvist Å. Seroprevalence of tick-borne encephalitis virus and vaccination coverage of tick-borne encephalitis, Sweden, 2018 to 2019. Euro Surveill 2024; 29:2300221. [PMID: 38214080 PMCID: PMC10785208 DOI: 10.2807/1560-7917.es.2024.29.2.2300221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 11/07/2023] [Indexed: 01/13/2024] Open
Abstract
BackgroundIn Sweden, information on seroprevalence of tick-borne encephalitis virus (TBEV) in the population, including vaccination coverage and infection, is scattered. This is largely due to the absence of a national tick-borne encephalitis (TBE) vaccination registry, scarcity of previous serological studies and use of serological methods not distinguishing between antibodies induced by vaccination and infection. Furthermore, the number of notified TBE cases in Sweden has continued to increase in recent years despite increased vaccination.AimThe aim was to estimate the TBEV seroprevalence in Sweden.MethodsIn 2018 and 2019, 2,700 serum samples from blood donors in nine Swedish regions were analysed using a serological method that can distinguish antibodies induced by vaccination from antibodies elicited by infection. The regions were chosen to reflect differences in notified TBE incidence.ResultsThe overall seroprevalence varied from 9.7% (95% confidence interval (CI): 6.6-13.6%) to 64.0% (95% CI: 58.3-69.4%) between regions. The proportion of vaccinated individuals ranged from 8.7% (95% CI: 5.8-12.6) to 57.0% (95% CI: 51.2-62.6) and of infected from 1.0% (95% CI: 0.2-3.0) to 7.0% (95% CI: 4.5-10.7). Thus, more than 160,000 and 1,600,000 individuals could have been infected by TBEV and vaccinated against TBE, respectively. The mean manifestation index was 3.1%.ConclusionA difference was observed between low- and high-incidence TBE regions, on the overall TBEV seroprevalence and when separated into vaccinated and infected individuals. The estimated incidence and manifestation index argue that a large proportion of TBEV infections are not diagnosed.
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Affiliation(s)
- Bo Albinsson
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- These authors contributed equally to the work and share the first authorship
- Laboratory of Clinical Microbiology, Uppsala University Hospital, Uppsala, Sweden
| | - Tove Hoffman
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- These authors contributed equally to the work and share the first authorship
| | - Linda Kolstad
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Tomas Bergström
- Department of Infectious Diseases, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Gordana Bogdanovic
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Anna Heydecke
- Centre for Research and Development, Uppsala University, Region Gävleborg, Gävle, Sweden
| | - Mirja Hägg
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | | | - Ylva Lindroth
- Department of Laboratory Medicine, Medical Microbiology, Lund University, Skåne Laboratory Medicine, Lund, Sweden
| | - Annika Petersson
- Department of Clinical Chemistry and Transfusion Medicine, Växjö Central Hospital, Växjö, Sweden
| | - Marie Stenberg
- Laboratory Medical Center Gotland, Visby hospital, Visby, Sweden
| | - Sirkka Vene
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Patrik Ellström
- Laboratory of Clinical Microbiology, Uppsala University Hospital, Uppsala, Sweden
- Zoonosis Science Center, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Bengt Rönnberg
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
- Laboratory of Clinical Microbiology, Uppsala University Hospital, Uppsala, Sweden
| | - Åke Lundkvist
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
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18
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Czarnowska A, Groth M, Okrzeja J, Garkowski A, Kristoferitsch W, Kułakowska A, Zajkowska J. A fatal case of tick-borne encephalitis in an immunocompromised patient: case report from Northeastern Poland and review of literature. Ticks Tick Borne Dis 2024; 15:102273. [PMID: 37984275 DOI: 10.1016/j.ttbdis.2023.102273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 09/24/2023] [Accepted: 10/05/2023] [Indexed: 11/22/2023]
Abstract
Tick-borne encephalitis (TBE) is an infectious illness of the central nervous system caused by the TBE virus, which is commonly transmitted through a tick-bite. TBE is endemic in Europe and mid-Asia. In this study, we report a case of a 36-year-old woman, living in Northeastern Poland, with a history of double corneal transplantation and post-transplant immunosuppressive therapy who was admitted to hospital because of progressive weakness, acute headache, nausea, vertigo, vomiting, and fever. The patient was diagnosed with TBE. However, the diagnosis was challenging as the initial serological tests for antibodies against the TBE virus were negative. We want to raise the awareness among the clinicians that the course of TBE is often unpredictable and that it tends to be more severe in immunocompromised individuals.. Delayed production of antibodies against TBE virus, which might inhibit the diagnosis of the disease, is observed in some immunocompromised patients.
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Affiliation(s)
- Agata Czarnowska
- Department of Neurology, Medical University of Bialystok, Poland.
| | - Monika Groth
- Department of Infectious Diseases and Neuroinfection, Medical University of Białystok, Poland
| | - Jakub Okrzeja
- Department of Radiology, Medical University of Białystok, Poland
| | - Adam Garkowski
- Department of Radiology, Medical University of Białystok, Poland
| | - Wolfgang Kristoferitsch
- Karl Landsteiner Institute for Neuroimmunological and Neurodegenerative Disorders, Vienna, Austria
| | - Alina Kułakowska
- Department of Neurology, Medical University of Bialystok, Poland
| | - Joanna Zajkowska
- Department of Infectious Diseases and Neuroinfection, Medical University of Białystok, Poland
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19
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Cesaroni CA, Frattini D, Lecis M, Bonvicini F, Bartolomeo D, Rizzi S, Spagnoli C, Napoli M, Pascarella R, De Fanti A, Fusco C. Tick-Borne Encephalitis in a 6-Year-Old Patient: A Case Report. Neurohospitalist 2024; 14:64-68. [PMID: 38235031 PMCID: PMC10790612 DOI: 10.1177/19418744231205626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024] Open
Abstract
Background: Tick-Borne Encephalitis virus (TBEV) is a positive-sense single-stranded RNA virus belonging to the Flaviviridae family. TBEV transmission typically occurs through infected Ixodes tick bite or by consumption of unpasteurised milk from infected cattle. Case report: We report the clinical, neuroimaging, electroencephalogram (EEG), and laboratory (microbiological tests and spinal tap) data of a 6- year-old boy with Tick-borne encephalitis. Our patient presented with a biphasic course, initially with a myositis-like picture on his first admission to the emergency department, and after a few days with an encephalitic picture, resulting in a second hospitalization. EEG showed focal slow activity, while his brain magnetic resonance imaging (MRI) showed a signal abnormality, which completely resolved on repeat MRI after 3 months. Conclusion: To our knowledge, this is the youngest patient presenting with myositis in the first phase of Tick-borne encephalitis (TBE). In the presence of a biphasic clinical course, with previous myositis, aspecific MRI changes in the thalamic and midbrain regions and an EEG documenting slowed bioelectrical activity should prompt suspicion of TBEV infection.
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Affiliation(s)
| | - Daniele Frattini
- Child Neurology Unit, AUSL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Marco Lecis
- Pediatrics Unit, Santa Maria Nuova Hospital, AUSL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Federico Bonvicini
- Pediatrics Unit, Santa Maria Nuova Hospital, AUSL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Domenico Bartolomeo
- Pediatrics Unit, Santa Maria Nuova Hospital, AUSL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Susanna Rizzi
- Child Neurology Unit, AUSL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Carlotta Spagnoli
- Child Neurology Unit, AUSL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Manuela Napoli
- Neuroradiology Unit, Azienda Unità Sanitaria Locale-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Rosario Pascarella
- Neuroradiology Unit, Azienda Unità Sanitaria Locale-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Alessandro De Fanti
- Pediatrics Unit, Santa Maria Nuova Hospital, AUSL-IRCCS of Reggio Emilia, Reggio Emilia, Italy
| | - Carlo Fusco
- Child Neurology Unit, AUSL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
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20
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Fortova A, Barkhash AV, Pychova M, Krbkova L, Palus M, Salat J, Ruzek D. Genetic polymorphisms in innate immunity genes influence predisposition to tick-borne encephalitis. J Neurovirol 2023; 29:699-705. [PMID: 37898570 PMCID: PMC10794283 DOI: 10.1007/s13365-023-01182-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/30/2023] [Accepted: 10/18/2023] [Indexed: 10/30/2023]
Abstract
Tick-borne encephalitis (TBE) is a neuroviral disease that ranges in severity from a mild febrile illness to a severe and life-threatening meningoencephalitis or encephalomyelitis. There is increasing evidence that susceptibility to tick-borne encephalitis virus (TBEV)-induced disease and its severity are largely influenced by host genetic factors, in addition to other virus- and host-related factors. In this study, we investigated the contribution of selected single nucleotide polymorphisms (SNPs) in innate immunity genes to predisposition to TBE in humans. More specifically, we investigated a possible association between SNPs rs304478 and rs303212 in the gene Interferon Induced Protein With Tetratricopeptide Repeats 1 (IFIT1), rs7070001 and rs4934470 in the gene Interferon Induced Protein With Tetratricopeptide Repeats 2 (IFIT2), and RIG-I (Retinoic acid-inducible gene I) encoding gene DDX58 rs311795343, rs10813831, rs17217280 and rs3739674 SNPs with predisposition to TBE in population of the Czech Republic, where TBEV is highly endemic. Genotypic and allelic frequencies for these SNPs were analyzed in 247 nonimmunized TBE patients and compared with 204 control subjects. The analysis showed an association of IFIT1 rs304478 SNP and DDX58 rs3739674 and rs17217280 SNPs with predisposition to TBE in the Czech population indicating novel risk factors for clinical TBE but not for disease severity. These results also highlight the role of innate immunity genes in TBE pathogenesis.
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Affiliation(s)
- Andrea Fortova
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, CZ-62100, Brno, Czechia
- Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500, Brno, Czechia
| | - Andrey V Barkhash
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, 10 Lavrentyeva Ave, Novosibirsk, 630090, Russia
| | - Martina Pychova
- Department of Infectious Diseases, University Hospital Brno and Faculty of Medicine, Masaryk University, CZ-62500, Brno, Czechia
| | - Lenka Krbkova
- Department of Children's Infectious Disease, Faculty of Medicine and University Hospital, Masaryk University, CZ-61300, Brno, Czechia
| | - Martin Palus
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, CZ-62100, Brno, Czechia
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-37005, Ceske Budejovice, Czechia
| | - Jiri Salat
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, CZ-62100, Brno, Czechia
- Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500, Brno, Czechia
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-37005, Ceske Budejovice, Czechia
| | - Daniel Ruzek
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, CZ-62100, Brno, Czechia.
- Department of Experimental Biology, Faculty of Science, Masaryk University, CZ-62500, Brno, Czechia.
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-37005, Ceske Budejovice, Czechia.
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Japan.
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21
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Simkute E, Pautienius A, Grigas J, Urbute P, Stankevicius A. The Prevalence, Seroprevalence, and Risk Factors of Tick-Borne Encephalitis Virus in Dogs in Lithuania, a Highly Endemic State. Viruses 2023; 15:2265. [PMID: 38005941 PMCID: PMC10674385 DOI: 10.3390/v15112265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/03/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
The rising awareness and increasing number of case reports of tick-borne encephalitis (TBE) in dogs indicate that the virus might be an important tick-borne pathogen in dogs, especially in endemic areas. Therefore, the aim of the present study was to investigate the prevalence rate of TBEV RNA and TBEV-specific antibodies in clinical samples of dogs living in a highly endemic region of Lithuania and to evaluate the main risk factors for severe disease course and death. The blood samples (n = 473) of dogs were collected in two veterinary clinics in central Lithuania. Tick-borne encephalitis virus (TBEV) RNA was detected in 18.6% (88/473; CI 95% 15.2-22.4) and TBEV-specific antibodies were found in 21.6% (102/473; CI 95% 17.9-25.6) of dog blood serum samples after confirmation with a virus neutralization test. The death/euthanasia rate was 18.2% (16/88; CI 95% 10.8-27.8) in PCR-positive dogs. Male dogs were more likely to develop neurological symptoms (p = 0.008). Older dogs (p = 0.003), dogs with the presence of neurological symptoms (p = 0.003), and dogs with the presence of TBEV-specific antibodies (p = 0.024) were more likely to experience worse outcomes of the disease. The results of the present study demonstrate that TBEV is a common and clinically important pathogen in dogs in such endemic countries as Lithuania.
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Affiliation(s)
- Evelina Simkute
- Laboratory of Immunology, Department of Anatomy and Physiology, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, (J.G.)
| | - Arnoldas Pautienius
- Laboratory of Immunology, Department of Anatomy and Physiology, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, (J.G.)
- Institute of Microbiology and Virology, Lithuanian University of Health Sciences, LT-47181 Kaunas, Lithuania
| | - Juozas Grigas
- Laboratory of Immunology, Department of Anatomy and Physiology, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, (J.G.)
- Institute of Microbiology and Virology, Lithuanian University of Health Sciences, LT-47181 Kaunas, Lithuania
| | - Paulina Urbute
- Laboratory of Immunology, Department of Anatomy and Physiology, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, (J.G.)
| | - Arunas Stankevicius
- Laboratory of Immunology, Department of Anatomy and Physiology, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, (J.G.)
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22
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Worku DA. Tick-Borne Encephalitis (TBE): From Tick to Pathology. J Clin Med 2023; 12:6859. [PMID: 37959323 PMCID: PMC10650904 DOI: 10.3390/jcm12216859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/19/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Tick-borne encephalitis (TBE) is a viral arthropod infection, endemic to large parts of Europe and Asia, and is characterised by neurological involvement, which can range from mild to severe, and in 33-60% of cases, it leads to a post-encephalitis syndrome and long-term morbidity. While TBE virus, now identified as Orthoflavivirus encephalitidis, was originally isolated in 1937, the pathogenesis of TBE is not fully appreciated with the mode of transmission (blood, tick, alimentary), viral strain, host immune response, and age, likely helping to shape the disease phenotype that we explore in this review. Importantly, the incidence of TBE is increasing, and due to global warming, its epidemiology is evolving, with new foci of transmission reported across Europe and in the UK. As such, a better understanding of the symptomatology, diagnostics, treatment, and prevention of TBE is required to inform healthcare professionals going forward, which this review addresses in detail. To this end, the need for robust national surveillance data and randomised control trial data regarding the use of various antivirals (e.g., Galidesivir and 7-deaza-2'-CMA), monoclonal antibodies, and glucocorticoids is required to improve the management and outcomes of TBE.
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Affiliation(s)
- Dominic Adam Worku
- Infectious Diseases, Morriston Hospital, Heol Maes Eglwys, Morriston, Swansea SA6 6NL, UK;
- Public Health Wales, 2 Capital Quarter, Cardiff CF10 4BZ, UK
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23
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Kwasnik M, Rola J, Rozek W. Tick-Borne Encephalitis-Review of the Current Status. J Clin Med 2023; 12:6603. [PMID: 37892741 PMCID: PMC10607749 DOI: 10.3390/jcm12206603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/01/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
The tick-borne encephalitis virus (TBEV) is the arboviral etiological agent of tick-borne encephalitis (TBE), considered to be one of the most important tick-borne viral diseases in Europe and Asia. In recent years, an increase in the incidence of TBE as well as an increasing geographical range of the disease have been noted. Despite the COVID-19 pandemic and the imposition of restrictions that it necessitated, the incidence of TBE is rising in more than half of the European countries analyzed in recent studies. The virus is transmitted between ticks, animals, and humans. It seems that ticks and small mammals play a role in maintaining TBEV in nature. The disease can also affect dogs, horses, cattle, and small ruminants. Humans are incidental hosts, infected through the bite of an infected tick or by the alimentary route, through the consumption of unpasteurized milk or milk products from TBEV-infected animals. TBEV infections in humans may be asymptomatic, but the symptoms can range from mild flu-like to severe neurological. In Europe, cases of TBE are reported every year. While there is currently no effective treatment for TBE, immunization and protection against tick bites are critical in preventing this disease.
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Affiliation(s)
- Malgorzata Kwasnik
- Department of Virology, National Veterinary Research Institute, Al. Partyzantow 57, 24-100 Pulawy, Poland; (J.R.); (W.R.)
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24
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Tang J, Fu M, Xu C, Xue B, Zhou A, Chen S, Zhao H, Zhou Y, Chen J, Yang Q, Chen X. Development of a novel virus-like particle-based vaccine for preventing tick-borne encephalitis virus infection. Virol Sin 2023; 38:767-777. [PMID: 37328107 PMCID: PMC10590693 DOI: 10.1016/j.virs.2023.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 06/12/2023] [Indexed: 06/18/2023] Open
Abstract
Tick-borne encephalitis virus (TBEV) is an important tick-borne pathogen that poses as a serious public health concern. The coverage and immunogenicity of the currently available vaccines against TBEV are relatively low; therefore, it is crucial to develop novel and effective vaccines against TBEV. The present study describes a novel strategy for the assembly of virus-like particles (VLPs) by co-expressing the structural (core/prM/E) and non-structural (NS2B/NS3Pro) proteins of TBEV. The efficacy of the VLPs was subsequently evaluated in C57BL/6 mice, and the resultant IgG serum could neutralize both Far-Eastern and European subtypes of TBEV. These findings indicated that the VLP-based vaccine elicited the production of cross-subtype reactive antibodies. The VLPs provided protection to mice lacking the type I interferon receptor (IFNAR-/-) against lethal TBEV challenge, with undetectable viral load in brain and intestinal tissues. Furthermore, the group that received the VLP vaccine did not exhibit significant pathological changes and the inflammatory factors were significantly suppressed compared to the control group. Immunization with the VLP vaccine induced the production of multiple-cytokine-producing antiviral CD4+ T cells in vivo, including TNF-α+, IL-2+, and IFN-γ+ T cells. Altogether, the findings suggest that noninfectious VLPs can serve as a potentially safe and effective vaccine candidate against diverse subtypes of TBEV.
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Affiliation(s)
- Jielin Tang
- Guangzhou National Laboratory, Guangzhou, 510005, China; State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Muqing Fu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Chonghui Xu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Bao Xue
- Guangzhou National Laboratory, Guangzhou, 510005, China; State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Anqi Zhou
- GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Sijie Chen
- GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - He Zhao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Yuan Zhou
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Jizheng Chen
- Guangzhou National Laboratory, Guangzhou, 510005, China; State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China; State Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China
| | - Qi Yang
- Guangzhou National Laboratory, Guangzhou, 510005, China; State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China.
| | - Xinwen Chen
- Guangzhou National Laboratory, Guangzhou, 510005, China; State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071, China; State Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou, 511436, China.
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25
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Groth M, Skrzydlewska E, Czupryna P, Biernacki M, Moniuszko-Malinowska A. Lipid mediators of cerebrospinal fluid in response to TBE and bacterial co-infections. Free Radic Biol Med 2023; 207:272-278. [PMID: 37499889 DOI: 10.1016/j.freeradbiomed.2023.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
Tick-borne diseases are caused by monoinfection or co-infection with different pathogens, including viruses, bacteria and protozoa. Tick-borne diseases are usually accompanied by oxidative stress which promotes the modifications of the host's lipid metabolism. The aim of the study was to compare total antioxidant status and the level of lipid mediators in the cerebrospinal fluid in response to tick-borne encephalitis (TBE) and bacterial co-infections that cause diseases such as that is Lyme borreliosis (LB) and human granulocytic anaplasmosis (HGA). In our study cerebrospinal fluid samples were obtained from 15 patients with TBE and 6 patients with TBE co-infection with LB and/or HGA at admission and after treatment. Control group consisted of 14 patients in whom meningitis was excluded. Total antioxidant status, levels of lipid peroxidation products, endocannabinoids and eicosanoids (determined by liquid and gas chromatography-mass spectrometry) were compared between the groups. It was found that in TBE patients, total antioxidant status was decreased and accompanied by increased levels of lipid peroxidation products (4-HNE, MDA, isoprostanes and neuroprostanes), major endocannabinoids (AEA and 2AG), and eicosanoids (both anti-inflammatory and pro-inflammatory), which generally declined after treatment. On the other hand, in co-infections, significant changes in the levels of some lipid mediators were observed even after the treatment. TBE alone or along with bacterial co-infections promote redox balance disturbances in the cerebrospinal fluid leading to oxidative stress and increased metabolism of phospholipids in the brain tissue reflected in the level of lipid peroxidation products and lipid mediators. Changes in the level of lipid mediators in patients with co-infections after treatment suggest further intensification of metabolic disturbances rather than their resolution.
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Affiliation(s)
- Monika Groth
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Poland
| | | | - Piotr Czupryna
- Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Poland
| | - Michał Biernacki
- Department of Analytical Chemistry, Medical University of Białystok, Poland
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26
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Chiffi G, Grandgirard D, Leib SL, Chrdle A, Růžek D. Tick-borne encephalitis: A comprehensive review of the epidemiology, virology, and clinical picture. Rev Med Virol 2023; 33:e2470. [PMID: 37392370 DOI: 10.1002/rmv.2470] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/31/2023] [Accepted: 06/12/2023] [Indexed: 07/03/2023]
Abstract
Tick-borne encephalitis virus (TBEV) is a flavivirus commonly found in at least 27 European and Asian countries. It is an emerging public health problem, with steadily increasing case numbers over recent decades. Tick-borne encephalitis virus affects between 10,000 and 15,000 patients annually. Infection occurs through the bite of an infected tick and, much less commonly, through infected milk consumption or aerosols. The TBEV genome comprises a positive-sense single-stranded RNA molecule of ∼11 kilobases. The open reading frame is > 10,000 bases long, flanked by untranslated regions (UTR), and encodes a polyprotein that is co- and post-transcriptionally processed into three structural and seven non-structural proteins. Tick-borne encephalitis virus infection results in encephalitis, often with a characteristic biphasic disease course. After a short incubation time, the viraemic phase is characterised by non-specific influenza-like symptoms. After an asymptomatic period of 2-7 days, more than half of patients show progression to a neurological phase, usually characterised by central and, rarely, peripheral nervous system symptoms. Mortality is low-around 1% of confirmed cases, depending on the viral subtype. After acute tick-borne encephalitis (TBE), a minority of patients experience long-term neurological deficits. Additionally, 40%-50% of patients develop a post-encephalitic syndrome, which significantly impairs daily activities and quality of life. Although TBEV has been described for several decades, no specific treatment exists. Much remains unknown regarding the objective assessment of long-lasting sequelae. Additional research is needed to better understand, prevent, and treat TBE. In this review, we aim to provide a comprehensive overview of the epidemiology, virology, and clinical picture of TBE.
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Affiliation(s)
- Gabriele Chiffi
- Department for BioMedical Research, University of Bern, Bern, Switzerland
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Denis Grandgirard
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Stephen L Leib
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Aleš Chrdle
- Department of Infectious Diseases, Hospital Ceske Budejovice, Ceske Budejovice, Czech Republic
- Faculty of Health and Social Sciences, University of South Bohemia, Ceske Budejovice, Czech Republic
- Royal Liverpool University Hospital, Liverpool, UK
| | - Daniel Růžek
- Veterinary Research Institute, Emerging Viral Diseases, Brno, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Ceske Budejovice, Czech Republic
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27
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Lata K, Charles S, Mangala Prasad V. Advances in computational approaches to structure determination of alphaviruses and flaviviruses using cryo-electron microscopy. J Struct Biol 2023; 215:107993. [PMID: 37414374 DOI: 10.1016/j.jsb.2023.107993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/15/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
Advancements in the field of cryo-electron microscopy (cryo-EM) have greatly contributed to our current understanding of virus structures and life cycles. In this review, we discuss the application of single particle cryo-electron microscopy (EM) for the structure elucidation of small enveloped icosahedral viruses, namely, alpha- and flaviviruses. We focus on technical advances in cryo-EM data collection, image processing, three-dimensional reconstruction, and refinement strategies for obtaining high-resolution structures of these viruses. Each of these developments enabled new insights into the alpha- and flavivirus architecture, leading to a better understanding of their biology, pathogenesis, immune response, immunogen design, and therapeutic development.
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Affiliation(s)
- Kiran Lata
- Molecular Biophysics Unit, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Sylvia Charles
- Molecular Biophysics Unit, Indian Institute of Science, Bengaluru, Karnataka 560012, India
| | - Vidya Mangala Prasad
- Molecular Biophysics Unit, Indian Institute of Science, Bengaluru, Karnataka 560012, India; Center for Infectious Disease Research, Indian Institute of Science, Bengaluru, Karnataka 560012, India
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Jende F, Hilgenfeld T, Juerchott A, Kurz FT, Bendszus M, Schoenfeld MA, Jende JME. Teaching NeuroImage: Plexus Neuritis After an Infection With the Tick-Borne Encephalitis Virus. Neurology 2023; 101:e677-e678. [PMID: 37185122 PMCID: PMC10424827 DOI: 10.1212/wnl.0000000000207328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 03/06/2023] [Indexed: 05/17/2023] Open
Affiliation(s)
- Fanny Jende
- From the Kliniken Schmieder (F.J., M.A.S.), Clinic for Neurological Rehabilitation; Department of Neuroradiology (T.H., A.J., M.B., J.M.E.J.), Heidelberg University Hospital; and German Cancer Research Center (F.T.K.), Heidelberg, Germany.
| | - Tim Hilgenfeld
- From the Kliniken Schmieder (F.J., M.A.S.), Clinic for Neurological Rehabilitation; Department of Neuroradiology (T.H., A.J., M.B., J.M.E.J.), Heidelberg University Hospital; and German Cancer Research Center (F.T.K.), Heidelberg, Germany
| | - Alexander Juerchott
- From the Kliniken Schmieder (F.J., M.A.S.), Clinic for Neurological Rehabilitation; Department of Neuroradiology (T.H., A.J., M.B., J.M.E.J.), Heidelberg University Hospital; and German Cancer Research Center (F.T.K.), Heidelberg, Germany
| | - Felix Tobias Kurz
- From the Kliniken Schmieder (F.J., M.A.S.), Clinic for Neurological Rehabilitation; Department of Neuroradiology (T.H., A.J., M.B., J.M.E.J.), Heidelberg University Hospital; and German Cancer Research Center (F.T.K.), Heidelberg, Germany
| | - Martin Bendszus
- From the Kliniken Schmieder (F.J., M.A.S.), Clinic for Neurological Rehabilitation; Department of Neuroradiology (T.H., A.J., M.B., J.M.E.J.), Heidelberg University Hospital; and German Cancer Research Center (F.T.K.), Heidelberg, Germany
| | - Mircea Ariel Schoenfeld
- From the Kliniken Schmieder (F.J., M.A.S.), Clinic for Neurological Rehabilitation; Department of Neuroradiology (T.H., A.J., M.B., J.M.E.J.), Heidelberg University Hospital; and German Cancer Research Center (F.T.K.), Heidelberg, Germany
| | - Johann Malte Enno Jende
- From the Kliniken Schmieder (F.J., M.A.S.), Clinic for Neurological Rehabilitation; Department of Neuroradiology (T.H., A.J., M.B., J.M.E.J.), Heidelberg University Hospital; and German Cancer Research Center (F.T.K.), Heidelberg, Germany.
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Jakimovski D, Mateska S, Dimitrova E, Bosilkovski M, Mijatović D, Simin V, Bogdan I, Grujić J, Budakov-Obradović Z, Meletis E, Kostoulas P, Cabezas-Cruz A, Banović P. Tick-Borne Encephalitis Virus and Borrelia burgdorferi Seroprevalence in Balkan Tick-Infested Individuals: A Two-Centre Study. Pathogens 2023; 12:922. [PMID: 37513769 PMCID: PMC10385890 DOI: 10.3390/pathogens12070922] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Lyme borreliosis (LB) and tick-borne encephalitis (TBE) are important tick-borne diseases in Europe. This study aimed to investigate the seroreactivity against Borrelia burgdorferi and TBE virus (TBEV) in tick-infested individuals in North Macedonia and Serbia. Serum samples were collected from tick-infested individuals and from healthy individuals in the same regions. Samples were tested for anti-Borrelia IgG reactivity and TBEV-neutralizing antibodies. Results showed higher seroreactivity against Borrelia antigens in patients and healthy donors from Novi Sad compared to those from the Skopje region. However, there was no statistically significant difference between tick-infested patients and healthy donors within each region. No TBEV-neutralizing antibodies were detected in participants from Novi Sad or in the control groups, except for one person from North Macedonia who had a moderate TBEV-neutralizing reaction. The study highlights the need for improved surveillance and diagnostic capabilities for LB and TBE in these regions. It also suggests the potential existence of TBEV foci in North Macedonia. The findings provide a complementary understanding of the LB and TBE epidemiology in the studied regions; however, further research is needed to investigate the presence and distribution of Borrelia spp. and TBEV in ticks to assess the significance of detected seroreactivity.
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Affiliation(s)
- Dejan Jakimovski
- Faculty of Medicine, Ss. Cyril and Methodius University in Skopje, 1000 Skopje, North Macedonia
- University Clinic for Infectious Diseases and Febrile Conditions, 1000 Skopje, North Macedonia
| | - Sofija Mateska
- University Clinic for Infectious Diseases and Febrile Conditions, 1000 Skopje, North Macedonia
| | - Emilija Dimitrova
- Department of Infectious Diseases, City General Hospital 8th September, 1000 Skopje, North Macedonia
| | - Mile Bosilkovski
- Faculty of Medicine, Ss. Cyril and Methodius University in Skopje, 1000 Skopje, North Macedonia
- University Clinic for Infectious Diseases and Febrile Conditions, 1000 Skopje, North Macedonia
| | - Dragana Mijatović
- Department for Research and Monitoring of Rabies and Other Zoonoses, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
| | - Verica Simin
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
| | - Ivana Bogdan
- Department of Microbiology, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
| | - Jasmina Grujić
- Blood Transfusion Institute Vojvodina, 21000 Novi Sad, Serbia
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
| | - Zorana Budakov-Obradović
- Blood Transfusion Institute Vojvodina, 21000 Novi Sad, Serbia
- Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
| | - Eleftherios Meletis
- Faculty of Public and One Health, School of Health Sciences, University of Thessaly, 24410 Karditsa, Greece
| | - Polychronis Kostoulas
- Faculty of Public and One Health, School of Health Sciences, University of Thessaly, 24410 Karditsa, Greece
| | - Alejandro Cabezas-Cruz
- Anses, INRAE, Ecole Nationale Vétérinaire d'Alfort, UMR BIPAR, Laboratoire de Santé Animale, F-94700 Maisons-Alfort, France
| | - Pavle Banović
- Clinic for Lyme Borreliosis and Other Tick-Borne Diseases, Pasteur Institute Novi Sad, 21000 Novi Sad, Serbia
- Department of Microbiology with Parasitology and Immunology, Faculty of Medicine in Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
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Dabas R, Sharma N, Taksande AB, Prasad R, Munjewar PK, Wanjari MB. Breast Milk: A Potential Route of Tick-Borne Encephalitis Virus Transmission from Mother to Infant. Cureus 2023; 15:e41590. [PMID: 37559844 PMCID: PMC10407968 DOI: 10.7759/cureus.41590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/09/2023] [Indexed: 08/11/2023] Open
Abstract
Tick-borne encephalitis virus (TBEV) is a global public health concern, and understanding its transmission routes is crucial for effective prevention and control. While tick bites are the primary mode of TBEV transmission, emerging evidence suggests the potential for TBEV transmission through breast milk from infected mothers to their infants. This review article provides an overview of the current knowledge regarding TBEV transmission through breast milk and its clinical implications. It explores the presence and persistence of TBEV in breast milk, potential mechanisms of transmission, and the role of immune factors in facilitating or inhibiting viral transmission. The clinical outcomes and complications in infants infected with TBEV through breast milk are discussed, along with the epidemiological patterns and geographical considerations of this transmission mode. Preventive and management strategies are also addressed, including public health measures, risk assessment, and potential interventions. Future research directions are highlighted, emphasizing the need for further epidemiological studies, investigations into viral load dynamics, immune responses, and the development of preventive measures targeting TBEV transmission through breast milk. By expanding our knowledge in these areas, we can improve strategies to reduce the risk of TBEV transmission from mothers to infants and protect vulnerable populations.
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Affiliation(s)
- Rohit Dabas
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Nandita Sharma
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Avinash B Taksande
- Physiology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Roshan Prasad
- Internal Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Pratiksha K Munjewar
- Medical Surgical Nursing, Smt. Radhikabai Meghe Memorial College of Nursing, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Mayur B Wanjari
- Research and Development, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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31
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Pustijanac E, Buršić M, Talapko J, Škrlec I, Meštrović T, Lišnjić D. Tick-Borne Encephalitis Virus: A Comprehensive Review of Transmission, Pathogenesis, Epidemiology, Clinical Manifestations, Diagnosis, and Prevention. Microorganisms 2023; 11:1634. [PMID: 37512806 PMCID: PMC10383662 DOI: 10.3390/microorganisms11071634] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/13/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
Tick-borne encephalitis virus (TBEV), a member of the Flaviviridae family, can cause serious infection of the central nervous system in humans, resulting in potential neurological complications and fatal outcomes. TBEV is primarily transmitted to humans through infected tick bites, and the viral agent circulates between ticks and animals, such as deer and small mammals. The occurrence of the infection aligns with the seasonal activity of ticks. As no specific antiviral therapy exists for TBEV infection, treatment approaches primarily focus on symptomatic relief and support. Active immunization is highly effective, especially for individuals in endemic areas. The burden of TBEV infections is increasing, posing a growing health concern. Reported incidence rates rose from 0.4 to 0.9 cases per 100,000 people between 2015 and 2020. The Baltic and Central European countries have the highest incidence, but TBE is endemic across a wide geographic area. Various factors, including social and environmental aspects, improved medical awareness, and advanced diagnostics, have contributed to the observed increase. Diagnosing TBEV infection can be challenging due to the non-specific nature of the initial symptoms and potential co-infections. Accurate diagnosis is crucial for appropriate management, prevention of complications, and effective control measures. In this comprehensive review, we summarize the molecular structure of TBEV, its transmission and circulation in natural environments, the pathogenesis of TBEV infection, the epidemiology and global distribution of the virus, associated risk factors, clinical manifestations, and diagnostic approaches. By improving understanding of these aspects, we aim to enhance knowledge and promote strategies for timely and accurate diagnosis, appropriate management, and the implementation of effective control measures against TBEV infections.
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Affiliation(s)
- Emina Pustijanac
- Faculty of Natural Sciences, Juraj Dobrila University of Pula, 52100 Pula, Croatia
| | - Moira Buršić
- Faculty of Natural Sciences, Juraj Dobrila University of Pula, 52100 Pula, Croatia
| | - Jasminka Talapko
- Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Crkvena 21, 31000 Osijek, Croatia
| | - Ivana Škrlec
- Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Crkvena 21, 31000 Osijek, Croatia
| | - Tomislav Meštrović
- University Centre Varaždin, University North, 42000 Varaždin, Croatia
- Institute for Health Metrics and Evaluation and the Department of Health Metrics Sciences, University of Washington, Seattle, WA 98195, USA
| | - Dubravka Lišnjić
- Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Crkvena 21, 31000 Osijek, Croatia
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Josipa Huttlera 4, 31000 Osijek, Croatia
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Abstract
PURPOSE OF REVIEW The most common infectious etiologies of meningitis and encephalitis are viruses. In this review, we will discuss current epidemiology, prevention, diagnosis, and treatment of the most common causes of viral meningitis and encephalitis worldwide. RECENT FINDINGS Viral meningitis and encephalitis are increasingly diagnosed as molecular diagnostic techniques and serologies have become more readily available worldwide but recent progress in novel antiviral therapies remains limited. Emerging and re-emerging viruses that have caused endemic or worldwide outbreaks or epidemics are arboviruses (e.g., West Nile virus, Japanese encephalitis, Tick borne encephalitis, Dengue, Zika, Toscana), enteroviruses (e.g., Enterovirus 71, Enterovirus D68), Parechoviruses, respiratory viruses [e.g., severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza, metapneumoviruses, measles, mumps], and herpes viruses [e.g., herpes simplex virus (HSV) type 1 (HSV-1), HSV-2, human herpes (HV) 6, varicella zoster virus (VZV)]. Future efforts should concentrate in increasing availability for those viruses with effective vaccination [e.g., Japanese encephalitis, Tick borne encephalitis, varicella zoster viruses, SARS-CoV-2, influenza], prompt initiation of those with encephalitis with treatable viruses (e.g., HSV-1, VZV), increasing the diagnostic yield by using novel techniques such as metagenomic sequencing and avoiding unnecessary antibiotics in those with viral meningitis or encephalitis. SUMMARY We review the current epidemiology, clinical presentation, diagnosis, and treatment of the common causative agents of viral meningitis and encephalitis worldwide.
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Affiliation(s)
- Vaishnavi Gundamraj
- Wisconsin Institute of Medical Research, University of Wisconsin-Madison, Madison, Wisconsin
| | - Rodrigo Hasbun
- Professor of Medicine, Section of Infectious Diseases, UT Health McGovern Medical School, Houston, Texas, USA
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Bestehorn-Willmann M, Girl P, Greiner F, Mackenstedt U, Dobler G, Lang D. Increased Vaccination Diversity Leads to Higher and Less-Variable Neutralization of TBE Viruses of the European Subtype. Vaccines (Basel) 2023; 11:1044. [PMID: 37376433 DOI: 10.3390/vaccines11061044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 05/24/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023] Open
Abstract
Tick-borne encephalitis (TBE) is an infectious disease of the central nervous system. The causative agent is the tick-borne encephalitis virus (TBEV), which is most commonly transmitted by tick bites, but which may also be transmitted through the consumption of raw dairy products or, in rare instances, via infected transfusions, transplants, or the slaughter of infected animals. The only effective preventive option is active immunization. Currently, two vaccines are available in Europe-Encepur® and FSME-IMMUN®. In Central, Eastern, and Northern Europe, isolated TBEV genotypes belong mainly to the European subtype (TBEV-EU). In this study, we investigated the ability of these two vaccines to induce neutralizing antibodies against a panel of diverse natural TBEV-EU isolates from TBE-endemic areas in southern Germany and in regions of neighboring countries. Sera of 33 donors vaccinated with either FSME-IMMUN®, Encepur®, or a mixture of both were tested against 16 TBEV-EU strains. Phylogenetic analysis of the TBEV-EU genomes revealed substantial genetic diversity and ancestry of the identified 13 genotypic clades. Although all sera were able to neutralize the TBEV-EU strains, there were significant differences among the various vaccination groups. The neutralization assays revealed that the vaccination using the two different vaccine brands significantly increased neutralization titers, decreased intra-serum variance, and reduced the inter-virus variation.
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Affiliation(s)
- Malena Bestehorn-Willmann
- Institute for Zoology, Parasitology Unit, University of Hohenheim, 70599 Stuttgart, Germany
- Bundeswehr Institute of Microbiology, 80937 Munich, Germany
| | - Philipp Girl
- Bundeswehr Institute of Microbiology, 80937 Munich, Germany
| | - Franziska Greiner
- Institute for Zoology, Parasitology Unit, University of Hohenheim, 70599 Stuttgart, Germany
| | - Ute Mackenstedt
- Institute for Zoology, Parasitology Unit, University of Hohenheim, 70599 Stuttgart, Germany
| | - Gerhard Dobler
- Institute for Zoology, Parasitology Unit, University of Hohenheim, 70599 Stuttgart, Germany
- Bundeswehr Institute of Microbiology, 80937 Munich, Germany
| | - Daniel Lang
- Bundeswehr Institute of Microbiology, 80937 Munich, Germany
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Marušić M, Kopitar AN, Korva M, Knap N, Bogovič P, Strle F, Ihan A, Avšič-Županc T. Dendritic cell activation and cytokine response in vaccine breakthrough TBE patients after in vitro stimulation with TBEV. Front Immunol 2023; 14:1190803. [PMID: 37261350 PMCID: PMC10228714 DOI: 10.3389/fimmu.2023.1190803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/03/2023] [Indexed: 06/02/2023] Open
Abstract
Tick-borne encephalitis (TBE) is a viral infection of the human central nervous system caused by the TBE virus (TBEV). The most effective protective measure against TBE is vaccination. Despite the highly immunogenic vaccine, cases of vaccine breakthroughs (VBTs) occur. One of the first targets of infection is dendritic cells (DC), which represent a fundamental bridge between innate and adaptive immunity through antigen presentation, costimulation, and cytokine production. Therefore, we investigated the activation and maturation of DCs and cytokine production after in vitro TBEV stimulation of peripheral blood mononuclear cells (PBMCs) obtained from VBT and unvaccinated TBE patients. Our results showed that the expression of HLA-DR and CD86 on DCs, was upregulated to a similar extent in both vaccinated and unvaccinated TBE patients but differed in cytokine production after stimulation with TBEV. PBMCs from patients with VBT TBE responded with lower levels of IFN-α and the proinflammatory cytokines IL-12 (p70) and IL-15 after 24- and 48-hour in vitro stimulation with TBEV, possibly facilitating viral replication and influencing the development of cell-mediated immunity. On the other hand, significantly higher levels of IL-6 in addition to an observed trend of higher expression of TNF-α measured after 6 days of in vitro stimulation of PBMC could support disruption of the blood-brain barrier and promote viral and immune cell influx into the CNS, leading to more severe disease in VBT TBE patients.
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Affiliation(s)
- Miša Marušić
- Laboratory for Diagnostics of Zoonoses and World Health Organisation (WHO) Center, Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Andreja Nataša Kopitar
- Laboratory for Cellular Immunology, Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Miša Korva
- Laboratory for Diagnostics of Zoonoses and World Health Organisation (WHO) Center, Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Nataša Knap
- Laboratory for Diagnostics of Zoonoses and World Health Organisation (WHO) Center, Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Petra Bogovič
- Department of Infectious Diseases, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Franc Strle
- Department of Infectious Diseases, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Alojz Ihan
- Laboratory for Cellular Immunology, Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Tatjana Avšič-Županc
- Laboratory for Diagnostics of Zoonoses and World Health Organisation (WHO) Center, Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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Kjær LJ, Johansson M, Lindgren PE, Asghar N, Wilhelmsson P, Fredlund H, Christensson M, Wallenhammar A, Bødker R, Rasmussen G, Kjellander P. Potential drivers of human tick-borne encephalitis in the Örebro region of Sweden, 2010-2021. Sci Rep 2023; 13:7685. [PMID: 37169798 PMCID: PMC10175290 DOI: 10.1038/s41598-023-34675-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/05/2023] [Indexed: 05/13/2023] Open
Abstract
Incidence of tick-borne encephalitis (TBE) has increased during the last years in Scandinavia, but the underlying mechanism is not understood. TBE human case data reported between 2010 and 2021 were aggregated into postal codes within Örebro County, south-central Sweden, along with tick abundance and environmental data to analyse spatial patterns and identify drivers of TBE. We identified a substantial and continuing increase of TBE incidence in Örebro County during the study period. Spatial cluster analyses showed significant hotspots (higher number of cases than expected) in the southern and northern parts of Örebro County, whereas a cold spot (lower number of cases than expected) was found in the central part comprising Örebro municipality. Generalised linear models showed that the risk of acquiring TBE increased by 12.5% and 72.3% for every percent increase in relative humidity and proportion of wetland forest, respectively, whereas the risk decreased by 52.8% for every degree Celsius increase in annual temperature range. However, models had relatively low goodness of fit (R2 < 0.27). Results suggest that TBE in Örebro County is spatially clustered, however variables used in this study, i.e., climatic variables, forest cover, water, tick abundance, sheep as indicator species, alone do not explain this pattern.
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Affiliation(s)
- Lene Jung Kjær
- Section for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark.
| | - Magnus Johansson
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Per-Eric Lindgren
- Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Division of Clinical Microbiology, Department of Laboratory Medicine, Region Jönköping County, Jönköping, Sweden
| | - Naveed Asghar
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Peter Wilhelmsson
- Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
- Division of Clinical Microbiology, Department of Laboratory Medicine, Region Jönköping County, Jönköping, Sweden
| | - Hans Fredlund
- Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Örebro County Council, Örebro, Sweden
| | - Madeleine Christensson
- Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences (SLU), Riddarhyttan, Sweden
| | - Amélie Wallenhammar
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - René Bødker
- Section for Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Gunløg Rasmussen
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Örebro County Council, Örebro, Sweden
| | - Petter Kjellander
- Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences (SLU), Riddarhyttan, Sweden
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Varghese J, De Silva I, Millar DS. Latest Advances in Arbovirus Diagnostics. Microorganisms 2023; 11:1159. [PMID: 37317133 DOI: 10.3390/microorganisms11051159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/15/2023] [Accepted: 04/26/2023] [Indexed: 06/16/2023] Open
Abstract
Arboviruses are a diverse family of vector-borne pathogens that include members of the Flaviviridae, Togaviridae, Phenuviridae, Peribunyaviridae, Reoviridae, Asfarviridae, Rhabdoviridae, Orthomyxoviridae and Poxviridae families. It is thought that new world arboviruses such as yellow fever virus emerged in the 16th century due to the slave trade from Africa to America. Severe disease-causing viruses in humans include Japanese encephalitis virus (JEV), yellow fever virus (YFV), dengue virus (DENV), West Nile virus (WNV), Zika virus (ZIKV), Crimean-Congo hemorrhagic fever virus (CCHFV), severe fever with thrombocytopenia syndrome virus (SFTSV) and Rift Valley fever virus (RVFV). Numerous methods have been developed to detect the presence of these pathogens in clinical samples, including enzyme-linked immunosorbent assays (ELISAs), lateral flow assays (LFAs) and reverse transcriptase-polymerase chain reaction (RT-PCR). Most of these assays are performed in centralized laboratories due to the need for specialized equipment, such as PCR thermal cyclers and dedicated infrastructure. More recently, molecular methods have been developed which can be performed at a constant temperature, termed isothermal amplification, negating the need for expensive thermal cycling equipment. In most cases, isothermal amplification can now be carried out in as little as 5-20 min. These methods can potentially be used as inexpensive point of care (POC) tests and in-field deployable applications, thus decentralizing the molecular diagnosis of arboviral disease. This review focuses on the latest developments in isothermal amplification technology and detection techniques that have been applied to arboviral diagnostics and highlights future applications of these new technologies.
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Affiliation(s)
- Jano Varghese
- Genetic Signatures, 7 Eliza Street, Newtown, Sydney 2042, Australia
| | - Imesh De Silva
- Genetic Signatures, 7 Eliza Street, Newtown, Sydney 2042, Australia
| | - Douglas S Millar
- Genetic Signatures, 7 Eliza Street, Newtown, Sydney 2042, Australia
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Scroggs SLP, Offerdahl DK, Stewart PE, Shaia C, Griffin AJ, Bloom ME. Of Murines and Humans: Modeling Persistent Powassan Disease in C57BL/6 Mice. mBio 2023; 14:e0360622. [PMID: 36809119 PMCID: PMC10128018 DOI: 10.1128/mbio.03606-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 01/09/2023] [Indexed: 02/23/2023] Open
Abstract
Powassan infection is caused by two closely related, tick-transmitted viruses of the genus Flavivirus (family Flaviviridae): Powassan virus lineage I (POWV) and lineage II (known as deer tick virus [DTV]). Infection is typically asymptomatic or mild but can progress to neuroinvasive disease. Approximately 10% of neuroinvasive cases are fatal, and half of the survivors experience long-term neurological sequelae. Understanding how these viruses cause long-term symptoms as well as the possible role of viral persistence is important for developing therapies. We intraperitoneally inoculated 6-week-old C57BL/6 mice (50% female) with 103 focus-forming units (FFU) DTV and assayed for infectious virus, viral RNA, and inflammation during acute infection and 21, 56, and 84 days postinfection (dpi). Although most mice (86%) were viremic 3 dpi, only 21% of the mice were symptomatic and 83% recovered. Infectious virus was detected only in the brains of mice sampled during the acute infection. Viral RNA was detected in the brain until 84 dpi, but the magnitude decreased over time. Meningitis and encephalitis were visible in acute mice and from mice sampled at 21 dpi. Inflammation was observed until 56 dpi in the brain and 84 dpi in the spinal cord, albeit at low levels. These results suggest that the long-term neurological symptoms associated with Powassan disease are likely caused by lingering viral RNA and chronic inflammation in the central nervous system rather than by a persistent, active viral infection. The C57BL/6 model of persistent Powassan mimics illness in humans and can be used to study the mechanisms of chronic disease. IMPORTANCE Half of Powassan infection survivors experience long-term, mild to severe neurological symptoms. The progression from acute to chronic Powassan disease is not well understood, severely limiting treatment and prevention options. Infection of C57BL/6 mice with DTV mimics clinical disease in humans, and the mice exhibit CNS inflammation and viral RNA persistence until at least 86 dpi, while infectious virus is undetectable after 12 dpi. These findings suggest that the long-term neurological symptoms of chronic Powassan disease are in part due the persistence of viral RNA and the corresponding long-term inflammation of the brain and spinal cord. Our work demonstrates that C57BL/6 mice can be used to study the pathogenesis of chronic Powassan disease.
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Affiliation(s)
- Stacey L. P. Scroggs
- Biology of Vector-Borne Viruses Section, Laboratory of Virology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
- Arthropod-Borne Animal Disease Research Unit, Center for Grain and Animal Health Research, Agricultural Research Service, United States Department of Agriculture, Manhattan, Kansas, USA
| | - Danielle K. Offerdahl
- Biology of Vector-Borne Viruses Section, Laboratory of Virology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
| | - Philip E. Stewart
- Biology of Vector-Borne Viruses Section, Laboratory of Virology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
| | - Carl Shaia
- Rocky Mountain Veterinary Branch, Rocky Mountain Laboratories, Division of Intramural Research, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
| | - Amanda J. Griffin
- Office of the Chief, Laboratory of Virology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
| | - Marshall E. Bloom
- Biology of Vector-Borne Viruses Section, Laboratory of Virology, Rocky Mountain Laboratories, Division of Intramural Research, National Institute for Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
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Stone ET, Pinto AK. T Cells in Tick-Borne Flavivirus Encephalitis: A Review of Current Paradigms in Protection and Disease Pathology. Viruses 2023; 15:958. [PMID: 37112938 PMCID: PMC10146733 DOI: 10.3390/v15040958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/05/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
The family Flaviviridae is comprised of a diverse group of arthropod-borne viruses that are the etiological agents of globally relevant diseases in humans. Among these, infection with several of these flaviviruses-including West Nile virus (WNV), Zika virus (ZIKV), Japanese encephalitis virus (JEV), tick-borne encephalitis virus (TBEV), and Powassan virus (POWV)-can result in neuroinvasive disease presenting as meningitis or encephalitis. Factors contributing to the development and resolution of tick-borne flavivirus (TBEV, POWV) infection and neuropathology remain unclear, though many recently undertaken studies have described the virus-host interactions underlying encephalitic disease. With access to neural tissues despite the selectively permeable blood-brain barrier, T cells have emerged as one notable contributor to neuroinflammation. The goal of this review is to summarize the recent advances in tick-borne flavivirus immunology-particularly with respect to T cells-as it pertains to the development of encephalitis. We found that although T cell responses are rarely evaluated in a clinical setting, they are integral in conjunction with antibody responses to restricting the entry of TBFV into the CNS. The extent and means by which they can drive immune pathology, however, merits further study. Understanding the role of the T cell compartment in tick-borne flavivirus encephalitis is instrumental for improving vaccine safety and efficacy, and has implications for treatments and interventions for human disease.
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Affiliation(s)
| | - Amelia K. Pinto
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, MO 63103, USA
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Ruzek D. Editorial for the Special Issue: “Tick-Borne Encephalitis”. Microorganisms 2023; 11:microorganisms11040934. [PMID: 37110357 PMCID: PMC10144950 DOI: 10.3390/microorganisms11040934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 04/07/2023] Open
Abstract
Tick-borne encephalitis (TBE) is a disease caused by the tick-borne encephalitis virus (TBEV) [...]
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Affiliation(s)
- Daniel Ruzek
- Faculty of Science, Masaryk University, CZ-62500 Brno, Czech Republic
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, CZ-37005 Ceske Budejovice, Czech Republic
- Laboratory of Emerging Viral Infections, Veterinary Research Institute, CZ-62100 Brno, Czech Republic
- Research Center for Thermotolerant Microbial Resources, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-0841, Japan
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Nygren TM, Pilic A, Böhmer MM, Wagner-Wiening C, Went SB, Wichmann O, Hellenbrand W. Tick-borne encephalitis: Acute clinical manifestations and severity in 581 cases from Germany, 2018-2020. J Infect 2023; 86:369-375. [PMID: 36796679 DOI: 10.1016/j.jinf.2023.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 02/08/2023] [Accepted: 02/12/2023] [Indexed: 02/16/2023]
Abstract
OBJECTIVES Tick-borne encephalitis (TBE) is a growing public health problem with an average of 361 cases notified annually to Germany's passive surveillance system since 2001. We aimed to assess clinical manifestations and identify covariates associated with severity. METHODS We included cases notified 2018-2020 in a prospective cohort study and collected data with telephone interviews, questionnaires to general practitioners, and hospital discharge summaries. Covariates' causal associations with severity were evaluated with multivariable logistic regression, adjusted for variables identified via directed acyclic graphs. RESULTS Of 1220 eligible cases, 581 (48%) participated. Of these, 97.1% were not (fully) vaccinated. TBE was severe in 20.3% of cases (children: 9.1%, ≥70-year-olds: 48.6%). Routine surveillance data underreported the proportion of cases with central nervous system involvement (56% vs. 84%). Ninety percent required hospitalization, 13.8% intensive care, and 33.4% rehabilitation. Severity was most notably associated with age (odds ratio (OR): 1.04, 95% confidence interval (CI): 1.02-1.05), hypertension (OR: 2.27, 95%CI: 1.37-3.75), and monophasic disease course (OR: 1.67, 95%CI: 1.08-2.58). CONCLUSIONS We observed substantial TBE burden and health service utilization, suggesting that awareness of TBE severity and vaccine preventability should be increased. Knowledge of severity-associated factors may help inform patients' decision to get vaccinated.
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Affiliation(s)
| | - Antonia Pilic
- Immunization Unit, Robert Koch Institute, Berlin, Germany
| | - Merle M Böhmer
- Bavarian Health and Food Safety Authority (LGL), Munich, Germany; Institute of Social Medicine and Health Systems Research, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | | | | | - Ole Wichmann
- Immunization Unit, Robert Koch Institute, Berlin, Germany
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Davé VA, Klein RS. The multitaskers of the brain: Glial responses to viral infections and associated post-infectious neurologic sequelae. Glia 2023; 71:803-818. [PMID: 36334073 PMCID: PMC9931640 DOI: 10.1002/glia.24294] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/08/2022]
Abstract
Many viral infections cause acute and chronic neurologic diseases which can lead to degeneration of cortical functions. While neurotropic viruses that gain access to the central nervous system (CNS) may induce brain injury directly via infection of neurons or their supporting cells, they also alter brain function via indirect neuroimmune mechanisms that may disrupt the blood-brain barrier (BBB), eliminate synapses, and generate neurotoxic astrocytes and microglia that prevent recovery of neuronal circuits. Non-neuroinvasive, neurovirulent viruses may also trigger aberrant responses in glial cells, including those that interfere with motor and sensory behaviors, encoding of memories and executive function. Increasing evidence from human and animal studies indicate that neuroprotective antiviral responses that amplify levels of innate immune molecules dysregulate normal neuroimmune processes, even in the absence of neuroinvasion, which may persist after virus is cleared. In this review, we discuss how select emerging and re-emerging RNA viruses induce neuroimmunologic responses that lead to dysfunction of higher order processes including visuospatial recognition, learning and memory, and motor control. Identifying therapeutic targets that return the neuroimmune system to homeostasis is critical for preventing virus-induced neurodegenerative disorders.
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Affiliation(s)
- Veronica A Davé
- Center for Neuroimmunology & Neuroinfectious Diseases, Departments of Medicine, Pathology & Immunology, Neurosciences, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Robyn S Klein
- Center for Neuroimmunology & Neuroinfectious Diseases, Departments of Medicine, Pathology & Immunology, Neurosciences, Washington University School of Medicine, St. Louis, Missouri, USA
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Saegerman C, Humblet MF, Leandri M, Gonzalez G, Heyman P, Sprong H, L’Hostis M, Moutailler S, Bonnet SI, Haddad N, Boulanger N, Leib SL, Hoch T, Thiry E, Bournez L, Kerlik J, Velay A, Jore S, Jourdain E, Gilot-Fromont E, Brugger K, Geller J, Studahl M, Knap N, Avšič-Županc T, Růžek D, Zomer TP, Bødker R, Berger TFH, Martin-Latil S, De Regge N, Raffetin A, Lacour SA, Klein M, Lernout T, Quillery E, Hubálek Z, Ruiz-Fons F, Estrada-Peña A, Fravalo P, Kooh P, Etore F, Gossner CM, Purse B. First Expert Elicitation of Knowledge on Possible Drivers of Observed Increasing Human Cases of Tick-Borne Encephalitis in Europe. Viruses 2023; 15:v15030791. [PMID: 36992499 PMCID: PMC10054665 DOI: 10.3390/v15030791] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 03/29/2023] Open
Abstract
Tick-borne encephalitis (TBE) is a viral disease endemic in Eurasia. The virus is mainly transmitted to humans via ticks and occasionally via the consumption of unpasteurized milk products. The European Centre for Disease Prevention and Control reported an increase in TBE incidence over the past years in Europe as well as the emergence of the disease in new areas. To better understand this phenomenon, we investigated the drivers of TBE emergence and increase in incidence in humans through an expert knowledge elicitation. We listed 59 possible drivers grouped in eight domains and elicited forty European experts to: (i) allocate a score per driver, (ii) weight this score within each domain, and (iii) weight the different domains and attribute an uncertainty level per domain. An overall weighted score per driver was calculated, and drivers with comparable scores were grouped into three terminal nodes using a regression tree analysis. The drivers with the highest scores were: (i) changes in human behavior/activities; (ii) changes in eating habits or consumer demand; (iii) changes in the landscape; (iv) influence of humidity on the survival and transmission of the pathogen; (v) difficulty to control reservoir(s) and/or vector(s); (vi) influence of temperature on virus survival and transmission; (vii) number of wildlife compartments/groups acting as reservoirs or amplifying hosts; (viii) increase of autochthonous wild mammals; and (ix) number of tick species vectors and their distribution. Our results support researchers in prioritizing studies targeting the most relevant drivers of emergence and increasing TBE incidence.
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Affiliation(s)
- Claude Saegerman
- Fundamental and Applied Research for Animal and Health (FARAH) Center, University of Liege, 4000 Liege, Belgium
- Correspondence:
| | - Marie-France Humblet
- Department for Occupational Protection and Hygiene, Unit Biosafety, Biosecurity and Environmental Licences, University of Liege, 4000 Liege, Belgium
| | - Marc Leandri
- UMI SOURCE, Université Paris-Saclay—UVSQ, 78000 Versailles, France
| | - Gaëlle Gonzalez
- ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France
| | | | - Hein Sprong
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment, 3720 MA Bilthoven, The Netherlands
| | - Monique L’Hostis
- Ecole Nationale Vétérinaire Agroalimentaire et de l’Alimentation Nantes-Atlantique, Oniris, 44307 Nantes, France
| | - Sara Moutailler
- ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France
| | - Sarah I. Bonnet
- UMR 2000 Institut Pasteur-CNRS-Université Paris-Cité, Ecology and Emergence of Arthropod-borne Pathogens, 75015 Paris, France
- Animal Health Department, INRAE, 37380 Nouzilly, France
| | - Nadia Haddad
- ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France
| | - Nathalie Boulanger
- UR7290: VBP: Borrelia Group, France and French Reference Centre on Lyme Borreliosis, CHRU, Unversity of Strasbourg, 67000 Strasbourg, France
| | - Stephen L. Leib
- Institute for Infectious Diseases, University of Bern, 3001 Bern, Switzerland
| | | | - Etienne Thiry
- Fundamental and Applied Research for Animal and Health (FARAH) Center, University of Liege, 4000 Liege, Belgium
| | - Laure Bournez
- ANSES, Nancy Laboratory for Rabies and Wildlife, 54220 Malzéville, France
| | - Jana Kerlik
- Department of Epidemiology, Regional Authority of Public Health in Banská Bystrica, 497556 Banská Bystrica, Slovakia
| | - Aurélie Velay
- Unité Mixte de Recherché Immunorhumathologie Moléculaire (UMR IRM_S) 1109, Université de Strasbourg, INSERM, 67000 Strasbourg, France
| | - Solveig Jore
- Zoonotic, Water and Foodborne Infections, The Norwegian Institute for Public Health (NIPH), 0213 Oslo, Norway
| | - Elsa Jourdain
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR EPIA, Route de Theix, 63122 Saint-Genès-Champanelle, France
| | | | - Katharina Brugger
- Competence Center Climate and Health, Austrian National Institute of Public Health, 1010 Vienna, Austria
| | - Julia Geller
- Department of Virology and Immunology, National Institute for Health Development, 11619 Tallinn, Estonia
| | - Marie Studahl
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 41685 Gothenburg, Sweden
| | - Nataša Knap
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Zaloška cesta 4, 1000 Ljubljana, Slovenia
| | - Tatjana Avšič-Županc
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Zaloška cesta 4, 1000 Ljubljana, Slovenia
| | - Daniel Růžek
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 37005 Ceske Budejovice, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
- Department of Infectious Diseases and Preventive Medicine, Veterinary Research Institute, 62100 Brno, Czech Republic
| | - Tizza P. Zomer
- Lyme Center Apeldoorn, Gelre Hospital, 7300 DS Apeldoorn, The Netherlands
| | - René Bødker
- Animal Welfare and Disease Control, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 1870 Frederiksberg, Denmark
| | - Thomas F. H. Berger
- Agroscope, Risk Evaluation and Risk Mitigation, Schwarzenburgstrasse, 3003 Bern-Liebefeld, Switzerland
| | - Sandra Martin-Latil
- Laboratory for Food Safety, ANSES, University of Paris-EST, 94700 Maisons-Alfort, France
| | - Nick De Regge
- Operational Direction Infectious Diseases in Animals, Unit of Exotic and Vector-borne Diseases, Sciensano, 1180 Brussels, Belgium
| | - Alice Raffetin
- Reference Centre for Tick-Borne Diseases, Paris and Northern Region, Department of Infectious Diseases, General Hospital of Villeneuve-Saint-Georges, 94100 Villeneuve-Saint-Georges, France
| | - Sandrine A. Lacour
- ANSES, INRAE, Ecole Nationale Vétérinaire d’Alfort, UMR VIROLOGIE, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France
| | - Matthias Klein
- Neurologische Klinik und Poliklinik, Klinikum der Universität München, LMU München, Marchioninistraße 15, 81377 München, Germany
| | - Tinne Lernout
- Scientific Directorate of Epidemiology and Public Health, Sciensano, 1180 Brussels, Belgium
| | - Elsa Quillery
- ANSES, Risk Assessment Department, 94700 Maisons-Alfort, France
| | - Zdeněk Hubálek
- Institute of Vertebrate Biology, Czech Academy of Sciences, Květná 8, 60365 Brno, Czech Republic
| | - Francisco Ruiz-Fons
- Health & Biotechnology (SaBio) Group, Instituto de Investigación en Recursos Cinegéticos (IREC), CSIC-UCLM-JCCM, 13071 Ciudad Real, Spain
| | - Agustín Estrada-Peña
- Deptartment of Animal Health, Faculty of Veterinary Medicine, 50013 Zaragoza, Spain
| | - Philippe Fravalo
- Pôle Agroalimentaire, Conservatoire National des Arts et Métiers (Cnam), 75003 Paris, France
| | - Pauline Kooh
- ANSES, Risk Assessment Department, 94700 Maisons-Alfort, France
| | - Florence Etore
- ANSES, Risk Assessment Department, 94700 Maisons-Alfort, France
| | - Céline M. Gossner
- European Centre for Disease Prevention and Control (ECDC), 17183 Solna, Sweden
| | - Bethan Purse
- UK Centre for Ecology & Hydrology, Benson Lane, Crowmarsh Gifford, Oxfordshire OX10 8BB, UK
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Bio-efficacy of permethrin/tetramethrin and lambda-cyhalothrin treatments in habitats of hard ticks (Acari, Ixodidae) populations with confirmed Borrelia spp. infection. Parasitol Res 2023; 122:1127-1138. [PMID: 36884104 DOI: 10.1007/s00436-023-07812-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 03/01/2023] [Indexed: 03/09/2023]
Abstract
The aim of the study was to evaluate the bio-efficacy of two different acaricides against mobile stages of hard ticks Ixodes ricinus, Dermacentor marginatus, and Haemaphysalis punctata in their natural habitats. The study was conducted during 2020 and 2021 at localities populated by I. ricinus as the predominant species, at which the presence of Borrelia afzelii, Borrelia garinii, and Borrelia lusitaniae was confirmed. During the first investigation year, a combination of two pyrethroids, permethrin, and tetramethrin, with an insecticide synergist piperonyl butoxide (trade name: Perme Plus®) was tested. At the first evaluation, 24 h after the treatment with Perme Plus®, the efficacy expressed as a reduction rate of the population density was within the interval of satisfying performance (70-90%) at all localities, while the highest efficacy (97.8%) was recorded on the 14th post-treatment day. In the second investigation year, the formulation based on lambda-cyhalothrin (trade name: Icon® 10CS) was used. On the first post-treatment evaluation day, satisfying effects were also demonstrated. The highest recorded efficacy rate of lambda-cyhalothrin (94.7%) was recorded on the 14th post-treatment day. Both tested acaricides manifested satisfying initial acaricidal effects against mobile stages of ticks and provided long-term effects. Comparison of the regression trend lines of population reduction revealed that satisfying effects of treatment with Perme Plus® lasted until the 17th post-treatment day, while in the case of Icon® 10CS, the residual effects were significantly prolonged (30 days).
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Schley K, Friedrich J, Pilz A, Huang L, Balkaran BL, Maculaitis MC, Malerczyk C. Evaluation of under-testing and under-diagnosis of tick-borne encephalitis in Germany. BMC Infect Dis 2023; 23:139. [PMID: 36882704 PMCID: PMC9990549 DOI: 10.1186/s12879-023-08101-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 02/20/2023] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND Tick-borne encephalitis (TBE), a viral infectious disease affecting the central nervous system, potentially resulting in prolonged neurological symptoms and other long-term sequelae. Case identification can be challenging as TBE can be associated with non-specific symptoms, and even in cases consistent with typical TBE symptoms, the rate of laboratory testing to confirm cases is unknown. This study assessed real-world TBE laboratory testing rates across Germany. METHODS In this retrospective cross-sectional study, physicians provided data on TBE decision-making, laboratory testing (serological), and diagnostics behavior via in-depth qualitative interviews (N = 12) or a web-based quantitative survey of their patient medical records (N = 166). Hospital-based physicians who specialized in infectious disease, intensive care unit, emergency room, neurology, or pediatrics with experience managing and ordering testing for patients with meningitis, encephalitis, or non-specific central nervous system symptoms in the past 12 months were included. Data were summarized via descriptive statistics. TBE testing and positivity rates were assessed for the aggregate sample of 1400 patient charts and reported by presenting symptoms, region, and tick bite exposure. RESULTS TBE testing rates ranged from 54.0% (non-specific neurological symptoms only) to 65.6% (encephalitis symptoms only); the percentage of TBE positive results ranged from 5.3% (non-specific neurological symptoms only) to 36.9% (meningitis symptoms only). TBE testing rates were higher among those with a tick bite history and/or who presented with headache, high fever, or flu-like symptoms. CONCLUSIONS The findings of this study suggest that patients with typical TBE symptoms are likely under-tested, thus likely leading to under-diagnosis in Germany. To ensure appropriate case identification, TBE testing should be consistently integrated into routine practice for all patients who present with relevant symptoms or exposure to common risk factors.
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Affiliation(s)
| | | | - Andreas Pilz
- Pfizer Corporation, Austria Gesellschaft M.B.H., Floridsdorfer Hauptstraße 1, 1210, Vienna, Austria
| | - Liping Huang
- Pfizer Inc., 235 East 42Nd Street, New York, NY, USA
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Van Heuverswyn J, Hallmaier-Wacker LK, Beauté J, Gomes Dias J, Haussig JM, Busch K, Kerlik J, Markowicz M, Mäkelä H, Nygren TM, Orlíková H, Socan M, Zbrzeźniak J, Žygutiene M, Gossner CM. Spatiotemporal spread of tick-borne encephalitis in the EU/EEA, 2012 to 2020. Euro Surveill 2023; 28:2200543. [PMID: 36927718 PMCID: PMC10021474 DOI: 10.2807/1560-7917.es.2023.28.11.2200543] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
BackgroundTick-borne encephalitis (TBE) is a vaccine-preventable disease involving the central nervous system. TBE became a notifiable disease on the EU/EEA level in 2012.AimWe aimed to provide an updated epidemiological assessment of TBE in the EU/EEA, focusing on spatiotemporal changes.MethodsWe performed a descriptive analysis of case characteristics, time and location using data of human TBE cases reported by EU/EEA countries to the European Centre for Disease Prevention and Control with disease onset in 2012-2020. We analysed data at EU/EEA, national, and subnational levels and calculated notification rates using Eurostat population data. Regression models were used for temporal analysis.ResultsFrom 2012 to 2020, 19 countries reported 29,974 TBE cases, of which 24,629 (98.6%) were autochthonous. Czechia, Germany and Lithuania reported 52.9% of all cases. The highest notification rates were recorded in Lithuania, Latvia, and Estonia (16.2, 9.5 and 7.5 cases/100,000 population, respectively). Fifty regions from 10 countries, had a notification rate ≥ 5/100,000. There was an increasing trend in number of cases during the study period with an estimated 0.053 additional TBE cases every week. In 2020, 11.5% more TBE cases were reported than predicted based on data from 2016 to 2019. A geographical spread of cases was observed, particularly in regions situated north-west of known endemic regions.ConclusionA close monitoring of ongoing changes to the TBE epidemiological situation in Europe can support the timely adaption of vaccination recommendations. Further analyses to identify populations and geographical areas where vaccination programmes can be of benefit are needed.
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Affiliation(s)
| | | | - Julien Beauté
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Joana Gomes Dias
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | - Joana M Haussig
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
| | | | - Jana Kerlik
- Regional Authority of Public Health in Banská Bystrica, Banská Bystrica, Slovakia
| | | | - Henna Mäkelä
- Finnish Institute for Health and Welfare, Helsinki, Finland
| | | | - Hana Orlíková
- National Institute of Public Health, Prague, Czechia
| | - Maja Socan
- National Institute of Public Health, Ljubljana, Slovenia
| | - Jakub Zbrzeźniak
- National Institute of Public Health - NIH - National Research Institute, Warsaw, Poland
| | - Milda Žygutiene
- National Public Health Center under the Ministry of Health, Vilnius, Lithuania
| | - Céline M Gossner
- European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden
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Thielen H, Tuts N, Welkenhuyzen L, Huenges Wajer IMC, Lafosse C, Gillebert CR. Sensory sensitivity after acquired brain injury: A systematic review. J Neuropsychol 2023; 17:1-31. [PMID: 35773750 DOI: 10.1111/jnp.12284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 06/01/2022] [Accepted: 06/07/2022] [Indexed: 11/30/2022]
Abstract
Patients with acquired brain injury frequently report experiencing sensory stimuli as abnormally under- (sensory hyposensitivity) or overwhelming (sensory hypersensitivity). Although they can negatively impact daily functioning, these symptoms are poorly understood. To provide an overview of the current evidence on atypical sensory sensitivity after acquired brain injury, we conducted a systematic literature review. The primary aim of the review was to investigate the behavioural and neural mechanisms that are associated with self-reported sensory sensitivity. Studies were included when they studied sensory sensitivity in acquired brain injury populations, and excluded when they were not written in English, consisted of non-empirical research, did not study human subjects, studied pain, related sensory sensitivity to peripheral injury or studied patients with a neurodegenerative disorder, meningitis, encephalitis or a brain tumour. The Web of Science, PubMed and Scopus databases were searched for appropriate studies. A qualitative synthesis of the results of the 81 studies that were included suggests that abnormal sensory thresholds and a reduced information processing speed are candidate behavioural mechanisms of atypical subjective sensory sensitivity after acquired brain injury. Furthermore, there was evidence for an association between subjective sensory sensitivity and structural grey or white matter abnormalities, and to functional abnormalities in sensory cortices. However, further research is needed to explore the causation of atypical sensory sensitivity. In addition, there is a need for the development of adequate diagnostic tools. This can significantly advance the quantity and quality of research on the prevalence, aetiology, prognosis and treatment of these symptoms.
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Affiliation(s)
- Hella Thielen
- Department Brain and Cognition, Leuven Brain Institute (LBI), KU Leuven, Leuven, Belgium
| | - Nora Tuts
- Department Brain and Cognition, Leuven Brain Institute (LBI), KU Leuven, Leuven, Belgium
| | - Lies Welkenhuyzen
- Department Brain and Cognition, Leuven Brain Institute (LBI), KU Leuven, Leuven, Belgium.,Department Psychology, Hospital East-Limbourgh, Genk, Belgium.,TRACE, Centre for Translational Psychological Research, KU Leuven - Hospital East-Limbourgh, Genk, Belgium
| | - Irene M C Huenges Wajer
- Department of Neurology and Neurosurgery, University Medical Center Utrecht, Utrecht, The Netherlands.,Experimental Psychology, Utrecht University, Utrecht, The Netherlands
| | | | - Céline R Gillebert
- Department Brain and Cognition, Leuven Brain Institute (LBI), KU Leuven, Leuven, Belgium.,TRACE, Centre for Translational Psychological Research, KU Leuven - Hospital East-Limbourgh, Genk, Belgium
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Dobler G, Euringer K, Kaier K, Borde JP. Serological Protection Rates against TBEV Infection in Blood Donors from a Highly Endemic Region in Southern Germany. Vaccines (Basel) 2023; 11:vaccines11030522. [PMID: 36992106 DOI: 10.3390/vaccines11030522] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/11/2023] [Accepted: 02/15/2023] [Indexed: 02/25/2023] Open
Abstract
Background: Tick-borne encephalitis (TBE) is the most significant tick-borne disease in Europe and Asia, with more than 10,000 cases per year worldwide. A surge of reported TBE cases can be observed despite the availability of highly efficient vaccines. There is little known about the serological immune protection rate of the population in Germany. The seroprotection rate is defined as the presence of neutralizing antibodies. In contrast, the vaccination rate, as defined by public health agencies, may differ from the true protection rate in a population. Materials and Methods: 2220 blood samples from inhabitants of the county Ortenaukreis in the Federal State of Baden-Württemberg in Germany were included in the study. These were tested for anti-TBEV IgG antibodies by an anti-TBEV-IgG-ELISA. Subsequently, all TBEV-IgG positive samples were confirmed for neutralizing antibodies in the micro serum neutralization assay. Results: From the overall 2220 samples, 2104 were included in the comparison because of the selection of specific age groups (ages 20–69). In our sample size, we found an average serological protection rate (presence of neutralizing antibodies) of 57% (518/908) for the female blood donors and of 52% (632/1196) for the male blood donors. Discussion: In this study, we present new findings on a highly endemic region in southern Germany. Additionally, we present current data regarding the serological TBEV protection rates in the Ortenaukreis in southern Germany and compare these with a dataset published by the RKI, which is based on vaccination reports of the primary care providers and health care insurers, and with a self-reporting study conducted by a vaccine manufacturer. Our results significantly exceed the official numbers of average active vaccination status by 23.2% for females and by 21% for males. This might indicate an even longer persistence of TBE-vaccination-induced antibody titers than previously assumed.
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Affiliation(s)
- Gerhard Dobler
- Bundeswehr Institute of Microbiology, Neuherbergstraße 11, 80937 München, Germany
- Parasitology Unit, University of Hohenheim, Emil-Wolff-Straße 34, 70599 Stuttgart, Germany
| | - Kathrin Euringer
- Bundeswehr Institute of Microbiology, Neuherbergstraße 11, 80937 München, Germany
- Division of Infectious Diseases, Department of Medicine II, University of Freiburg Medical Center and Faculty of Medicine, 79098 Freiburg, Germany
| | - Klaus Kaier
- Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Stefan-Meier-Straße 26, 79098 Freiburg, Germany
| | - Johannes P Borde
- Division of Infectious Diseases, Department of Medicine II, University of Freiburg Medical Center and Faculty of Medicine, 79098 Freiburg, Germany
- Gesundheitszentrum Oberkirch, Am Marktplatz 8, 77704 Oberkirch, Germany
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Onen H, Luzala MM, Kigozi S, Sikumbili RM, Muanga CJK, Zola EN, Wendji SN, Buya AB, Balciunaitiene A, Viškelis J, Kaddumukasa MA, Memvanga PB. Mosquito-Borne Diseases and Their Control Strategies: An Overview Focused on Green Synthesized Plant-Based Metallic Nanoparticles. INSECTS 2023; 14:221. [PMID: 36975906 PMCID: PMC10059804 DOI: 10.3390/insects14030221] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
Mosquitoes act as vectors of pathogens that cause most life-threatening diseases, such as malaria, Dengue, Chikungunya, Yellow fever, Zika, West Nile, Lymphatic filariasis, etc. To reduce the transmission of these mosquito-borne diseases in humans, several chemical, biological, mechanical, and pharmaceutical methods of control are used. However, these different strategies are facing important and timely challenges that include the rapid spread of highly invasive mosquitoes worldwide, the development of resistance in several mosquito species, and the recent outbreaks of novel arthropod-borne viruses (e.g., Dengue, Rift Valley fever, tick-borne encephalitis, West Nile, yellow fever, etc.). Therefore, the development of novel and effective methods of control is urgently needed to manage mosquito vectors. Adapting the principles of nanobiotechnology to mosquito vector control is one of the current approaches. As a single-step, eco-friendly, and biodegradable method that does not require the use of toxic chemicals, the green synthesis of nanoparticles using active toxic agents from plant extracts available since ancient times exhibits antagonistic responses and broad-spectrum target-specific activities against different species of vector mosquitoes. In this article, the current state of knowledge on the different mosquito control strategies in general, and on repellent and mosquitocidal plant-mediated synthesis of nanoparticles in particular, has been reviewed. By doing so, this review may open new doors for research on mosquito-borne diseases.
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Affiliation(s)
- Hudson Onen
- Department of Entomology, Uganda Virus Research Institute, Plot 51/59 Nakiwogo Road, Entebbe P.O. Box 49, Uganda
| | - Miryam M. Luzala
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
- Centre de Recherche et d’Innovation Technologique en Environnement et en Sciences de la Santé (CRITESS), University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
| | - Stephen Kigozi
- Department of Biological Sciences, Faculty of Science, Kyambogo University, Kampala P.O. Box 1, Uganda
| | - Rebecca M. Sikumbili
- Centre de Recherche et d’Innovation Technologique en Environnement et en Sciences de la Santé (CRITESS), University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
- Department of Chemistry, Faculty of Science, University of Kinshasa, Kinshasa B.P. 190, Democratic Republic of the Congo
| | - Claude-Josué K. Muanga
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
- Centre de Recherche et d’Innovation Technologique en Environnement et en Sciences de la Santé (CRITESS), University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
| | - Eunice N. Zola
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
- Centre de Recherche et d’Innovation Technologique en Environnement et en Sciences de la Santé (CRITESS), University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
| | - Sébastien N. Wendji
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
- Centre de Recherche et d’Innovation Technologique en Environnement et en Sciences de la Santé (CRITESS), University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
| | - Aristote B. Buya
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
- Centre de Recherche et d’Innovation Technologique en Environnement et en Sciences de la Santé (CRITESS), University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
| | - Aiste Balciunaitiene
- Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry, 54333 Babtai, Lithuania
| | - Jonas Viškelis
- Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry, 54333 Babtai, Lithuania
| | - Martha A. Kaddumukasa
- Department of Biological Sciences, Faculty of Science, Kyambogo University, Kampala P.O. Box 1, Uganda
| | - Patrick B. Memvanga
- Laboratory of Pharmaceutics and Phytopharmaceutical Drug Development, Faculty of Pharmaceutical Sciences, University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
- Centre de Recherche et d’Innovation Technologique en Environnement et en Sciences de la Santé (CRITESS), University of Kinshasa, Kinshasa B.P. 212, Democratic Republic of the Congo
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Pulkkinen LIA, Barrass SV, Lindgren M, Pace H, Överby AK, Anastasina M, Bally M, Lundmark R, Butcher SJ. Simultaneous membrane and RNA binding by tick-borne encephalitis virus capsid protein. PLoS Pathog 2023; 19:e1011125. [PMID: 36787339 PMCID: PMC9970071 DOI: 10.1371/journal.ppat.1011125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/27/2023] [Accepted: 01/16/2023] [Indexed: 02/15/2023] Open
Abstract
Tick-borne encephalitis virus is an enveloped, pathogenic, RNA virus in the family Flaviviridae, genus Flavivirus. Viral particles are formed when the nucleocapsid, consisting of an RNA genome and multiple copies of the capsid protein, buds through the endoplasmic reticulum membrane and acquires the viral envelope and the associated proteins. The coordination of the nucleocapsid components to the sites of assembly and budding are poorly understood. Here, we investigate the interactions of the wild-type and truncated capsid proteins with membranes with biophysical methods and model membrane systems. We show that capsid protein initially binds membranes via electrostatic interactions with negatively-charged lipids, which is followed by membrane insertion. Additionally, we show that membrane-bound capsid protein can recruit viral genomic RNA. We confirm the biological relevance of the biophysical findings by using mass spectrometry to show that purified virions contain negatively-charged lipids. Our results suggest that nucleocapsid assembly is coordinated by negatively-charged membrane patches on the endoplasmic reticulum and that the capsid protein mediates direct contacts between the nucleocapsid and the membrane.
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Affiliation(s)
- Lauri Ilmari Aurelius Pulkkinen
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Bioscience Research Programme, University of Helsinki, Helsinki, Finland
- Helsinki Institute of Life Sciences-Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Sarah Victoria Barrass
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Bioscience Research Programme, University of Helsinki, Helsinki, Finland
- Helsinki Institute of Life Sciences-Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Marie Lindgren
- Department of Clinical Microbiology, Faculty of Medicine, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
| | - Hudson Pace
- Department of Clinical Microbiology, Faculty of Medicine, Umeå University, Umeå, Sweden
- Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden
| | - Anna K. Överby
- Department of Clinical Microbiology, Faculty of Medicine, Umeå University, Umeå, Sweden
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
| | - Maria Anastasina
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Bioscience Research Programme, University of Helsinki, Helsinki, Finland
- Helsinki Institute of Life Sciences-Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Marta Bally
- Department of Clinical Microbiology, Faculty of Medicine, Umeå University, Umeå, Sweden
- Wallenberg Centre for Molecular Medicine, Umeå University, Umeå, Sweden
| | - Richard Lundmark
- The Laboratory for Molecular Infection Medicine Sweden (MIMS), Umeå University, Umeå, Sweden
- Department of Integrative Medical Biology, Faculty of Medicine, Umeå University, Umeå, Sweden
- * E-mail: (SJB); (RL)
| | - Sarah Jane Butcher
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Bioscience Research Programme, University of Helsinki, Helsinki, Finland
- Helsinki Institute of Life Sciences-Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- * E-mail: (SJB); (RL)
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50
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Immune Functions of Astrocytes in Viral Neuroinfections. Int J Mol Sci 2023; 24:ijms24043514. [PMID: 36834929 PMCID: PMC9960577 DOI: 10.3390/ijms24043514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
Neuroinfections of the central nervous system (CNS) can be triggered by various pathogens. Viruses are the most widespread and have the potential to induce long-term neurologic symptoms with potentially lethal outcomes. In addition to directly affecting their host cells and inducing immediate changes in a plethora of cellular processes, viral infections of the CNS also trigger an intense immune response. Regulation of the innate immune response in the CNS depends not only on microglia, which are fundamental immune cells of the CNS, but also on astrocytes. These cells align blood vessels and ventricle cavities, and consequently, they are one of the first cell types to become infected after the virus breaches the CNS. Moreover, astrocytes are increasingly recognized as a potential viral reservoir in the CNS; therefore, the immune response initiated by the presence of intracellular virus particles may have a profound effect on cellular and tissue physiology and morphology. These changes should be addressed in terms of persisting infections because they may contribute to recurring neurologic sequelae. To date, infections of astrocytes with different viruses originating from genetically distinct families, including Flaviviridae, Coronaviridae, Retroviridae, Togaviridae, Paramyxoviridae, Picomaviridae, Rhabdoviridae, and Herpesviridae, have been confirmed. Astrocytes express a plethora of receptors that detect viral particles and trigger signaling cascades, leading to an innate immune response. In this review, we summarize the current knowledge on virus receptors that initiate the release of inflammatory cytokines from astrocytes and depict the involvement of astrocytes in immune functions of the CNS.
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