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Nörenberg J, Vida P, Bösmeier I, Forró B, Nörenberg A, Buda Á, Simon D, Erdő-Bonyár S, Jáksó P, Kovács K, Mikó É, Berki T, Mezősi E, Barakonyi A. Decidual γδT cells of early human pregnancy produce angiogenic and immunomodulatory proteins while also possessing cytotoxic potential. Front Immunol 2024; 15:1382424. [PMID: 38601161 PMCID: PMC11004470 DOI: 10.3389/fimmu.2024.1382424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 03/18/2024] [Indexed: 04/12/2024] Open
Abstract
During pregnancy, the maternal immune system must allow and support the growth of the developing placenta while maintaining the integrity of the mother's body. The trophoblast's unique HLA signature is a key factor in this physiological process. This study focuses on decidual γδT cell populations and examines their expression of receptors that bind to non-classical HLA molecules, HLA-E and HLA-G. We demonstrate that decidual γδT cell subsets, including Vδ1, Vδ2, and double-negative (DN) Vδ1-/Vδ2- cells express HLA-specific regulatory receptors, such as NKG2C, NKG2A, ILT2, and KIR2DL4, each with varying dominance. Furthermore, decidual γδT cells produce cytokines (G-CSF, FGF2) and cytotoxic mediators (Granulysin, IFN-γ), suggesting functions in placental growth and pathogen defense. However, these processes seem to be controlled by factors other than trophoblast-derived non-classical HLA molecules. These findings indicate that decidual γδT cells have the potential to actively contribute to the maintenance of healthy human pregnancy.
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Affiliation(s)
- Jasper Nörenberg
- Department of Medical Microbiology and Immunology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Obstetrics and Gynaecology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Péter Vida
- Department of Obstetrics and Gynaecology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Isabell Bösmeier
- Department of Medical Microbiology and Immunology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Barbara Forró
- Department of Pathology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Anna Nörenberg
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Obstetrics and Gynaecology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, Pécs, Hungary
| | - Ágnes Buda
- Department of Obstetrics and Gynaecology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Diana Simon
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Immunology and Biotechnology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Szabina Erdő-Bonyár
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Immunology and Biotechnology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Pál Jáksó
- Department of Pathology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Kálmán Kovács
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Obstetrics and Gynaecology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Éva Mikó
- Department of Medical Microbiology and Immunology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, Pécs, Hungary
| | - Tímea Berki
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Department of Immunology and Biotechnology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Emese Mezősi
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- First Department of Internal Medicine, University of Pécs Medical School, Clinical Center, Pécs, Hungary
| | - Alíz Barakonyi
- Department of Medical Microbiology and Immunology, University of Pécs Medical School, Clinical Center, Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, Pécs, Hungary
- Janos Szentagothai Research Centre, University of Pécs, Pécs, Hungary
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Sahin-Tóth J, Kovács E, Tóthpál A, Juhász J, Forró B, Bányai K, Havril K, Horváth A, Ghidán Á, Dobay O. Whole genome sequencing of coagulase positive staphylococci from a dog-and-owner screening survey. PLoS One 2021; 16:e0245351. [PMID: 33428679 PMCID: PMC7799803 DOI: 10.1371/journal.pone.0245351] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 12/28/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Staphylococcus aureus and S. pseudintermedius are the two most common coagulase positive staphylococci (CPS). S. aureus is more prevalent among humans, whereas S. pseudintermedius is more commonly isolated from dogs, however, both can cause various community and hospital acquired diseases in humans. METHODS In the current study we screened 102 dogs and 84 owners in Hungary. We tested the antibiotic susceptibility of the strains and in order to get a better picture of the clonal relationship of the strains, we used pulsed-field gel electrophoresis. In addition, three pairs of isolates with identical PFGE patterns were whole genome sequenced, MLST and spa types were established. RESULTS Carriage rate of S. aureus was 23.8% in humans and 4.9% in dogs and two cases of co-carriage were found among dogs and owners. S. pseudintermedius carriage rate was 2.4% and 34.3%, respectively, with only one co-carriage. The isolates were generally rather susceptible to the tested antibiotics, but high tetracycline resistance of S. pseudintermedius strains was noted. The co-carried isolates shared almost the same resistance genes (including tet(K), bla(Z), norA, mepR, lmrS, fosB) and virulence gene pattern. Apart from the common staphylococcal enzymes and cytotoxins, we found enterotoxins and exfoliative toxins as well. The two S. aureus pairs belonged to ST45-t630, ST45-t671 and ST15-t084, ST15-t084, respectively. The co-carried S. pseudintermedius isolates shared the same housekeeping gene alleles determining a novel sequence type ST1685. CONCLUSIONS Based on the genomic data, dog-owner co-carried strains displayed only insignificant differences therefore provided evidence for potential human-to-dog and dog-to-human transmission.
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Affiliation(s)
- Judit Sahin-Tóth
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Eszter Kovács
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Adrienn Tóthpál
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - János Juhász
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
| | - Krisztián Bányai
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
| | - Kata Havril
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Andrea Horváth
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Ágoston Ghidán
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Orsolya Dobay
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
- * E-mail:
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Forró B, Marton S, Fehér E, Domán M, Kemenesi G, Cadar D, Hornyák Á, Bányai K. Phylogeny of Hungarian EBLV-1 strains using whole-genome sequence data. Transbound Emerg Dis 2020; 68:1323-1331. [PMID: 33460276 DOI: 10.1111/tbed.13789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 07/17/2020] [Accepted: 08/10/2020] [Indexed: 11/26/2022]
Abstract
European bat lyssavirus 1 (EBLV-1) is a widespread lyssavirus across Europe, whose epizootic cycle is linked to a few bat species. Occasionally, EBLV-1 infection may occur in domestic animals and humans. EBLV-1 can be classified into two subtypes, where subtype EBLV-1a shows a wide geographic distribution between France and Russia whereas subtype EBLV-1b is distributed between Spain and Poland. In this study, we determined the genome sequence of two recent EBLV-1a strains detected in Hungary and analysed their adaptive evolution and phylodynamics. The data set that included 100 EBLV-1 genome sequences identified positive selection at selected sites in genes coding for viral proteins (N, codon 18; P, 141 and 155; G, 244 and 488; L, 168, 980, 1597 and 1754). A major genetic clade containing EBLV-1a isolates from Hungary, Slovakia, Denmark and Poland was estimated to have diverged during the 19th century whereas the divergence of the most recent ancestor of Hungarian and Slovakian isolates dates back to 1950 (time span, 1930 to 1970). Phylogeographic analysis of the EBLV-1a genomic sequences demonstrated strong evidence of viral dispersal from Poland to Hungary. This new information indicates that additional migratory flyways may help the virus spread, a finding that supplements the general theory on a west-to-east dispersal of EBLV-1a strains. Long-distance migrant bats may mediate the dispersal of EBLV-1 strains across Europe; however, structured surveillance and extended genome sequencing would be needed to better understand the epizootiology of EBLV-1 infections in Europe.
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Affiliation(s)
- Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
| | - Szilvia Marton
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
| | - Enikő Fehér
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
| | - Marianna Domán
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
| | - Gábor Kemenesi
- Szentágothai Research Centre, Virological Research Group Pécs Hungary, University of Pécs, Pécs, Hungary.,Faculty of Sciences, Institute of Biology, University of Pécs, Pécs, Hungary
| | - Daniel Cadar
- WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, National Reference Centre for Tropical Infectious Diseases, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Ákos Hornyák
- Veterinary Diagnostic Directorate, National Food Chain Safety Office, Budapest, Hungary
| | - Krisztián Bányai
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary
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Palya V, Kovács EW, Marton S, Tatár-Kis T, Felföldi B, Forró B, Domán M, Bányai K. Retraction: Novel Orthobunyavirus Causing Severe Kidney Disease in Broiler Chickens, Malaysia, 2014–2017. Emerg Infect Dis 2020; 26:1964. [PMID: 32679028 PMCID: PMC7392417 DOI: 10.3201/eid2608.202331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Kovács ÁB, Kreizinger Z, Forró B, Grózner D, Mitter A, Marton S, Bali K, Sawicka A, Tomczyk G, Bányai K, Gyuranecz M. The core genome multi-locus sequence typing of Mycoplasma anserisalpingitidis. BMC Genomics 2020; 21:403. [PMID: 32539834 PMCID: PMC7296915 DOI: 10.1186/s12864-020-06817-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/09/2020] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Mycoplasma anserisalpingitidis is a waterfowl pathogen that mainly infects geese, can cause significant economic losses and is present worldwide. With the advance of whole genome sequencing technologies, new methods are available for the researchers; one emerging methodology is the core genome Multi-Locus Sequence Typing (cgMLST). The core genome contains a high percentage of the coding DNA sequence (CDS) set of the studied strains. The cgMLST schemas are powerful genotyping tools allowing for the investigation of potential epidemics, and precise and reliable classification of the strains. Although whole genome sequences of M. anserisalpingitidis strains are available, to date, no cgMLST schema has been published for this species. RESULTS In this study, Illumina short reads of 81 M. anserisalpingitidis strains were used, including samples from Hungary, Poland, Sweden, and China. Draft genomes were assembled with the SPAdes software and analysed with the online available chewBBACA program. User made modifications in the program enabled analysis of mycoplasmas and provided similar results as the conventional SeqSphere+ software. The threshold of the presence of CDS in the strains was set to 93% due to the quality of the draft genomes, resulting in the most accurate and robust schema. Three hundred thirty-one CDSs constituted our cgMLST schema (representing 42,77% of the whole CDS set of M. anserisalpingitidis ATCC BAA-2147), and a Neighbor joining tree was created using the allelic profiles. The correlation was observed between the strains' cgMLST profile and geographical origin; however, strains from the same integration but different locations also showed close relationship. Strains isolated from different tissue samples of the same animal revealed highly similar cgMLST profiles. CONCLUSIONS The Neighbor joining tree from the cgMLST schema closely resembled the real-life spatial and temporal relationships of the strains. The incongruences between background data and the cgMLST profile in the strains from the same integration can be because of the higher probability of contacts between the flocks. This schema can help with the epidemiological investigation and can be used as a basis for further studies.
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Affiliation(s)
- Áron B Kovács
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Zsuzsa Kreizinger
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Dénes Grózner
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Alexa Mitter
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Szilvia Marton
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Krisztina Bali
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Anna Sawicka
- Department of Poultry Diseases, National Veterinary Research Institute, Aleja Partyzantow 57, 24-100, Pulawy, Poland
| | - Grzegorz Tomczyk
- Department of Poultry Diseases, National Veterinary Research Institute, Aleja Partyzantow 57, 24-100, Pulawy, Poland
| | - Krisztián Bányai
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary
| | - Miklós Gyuranecz
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungária krt 21, Budapest, H-1143, Hungary. .,Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, H-1078 István utca 2, Budapest, Hungary.
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Palya V, Kovács EW, Marton S, Tatár-Kis T, Felföldi B, Forró B, Domán M, Bányai K. Novel Orthobunyavirus Causing Severe Kidney Disease in Broiler Chickens, Malaysia, 2014-2017. Emerg Infect Dis 2019; 25:1110-1117. [PMID: 31107212 PMCID: PMC6537736 DOI: 10.3201/eid2506.181661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
During 2014–2017, we isolated a novel orthobunyavirus from broiler chickens with severe kidney lesions in the state of Kedah, Malaysia; we named the virus Kedah fatal kidney syndrome virus (KFKSV). Affected chickens became listless and diarrheic before dying suddenly. Necropsies detected pale and swollen kidneys with signs of gout, enlarged and fragile livers, and pale hearts. Experimental infection of broiler chickens with KFKSV reproduced the disease and pathologic conditions observed in the field, fulfilling the Koch’s postulates. Gene sequencing indicated high nucleotide identities between KFKSV isolates (99%) and moderate nucleotide identities with the orthobunyavirus Umbre virus in the large (78%), medium (77%), and small (86%) genomic segments. KFKSV may be pathogenic for other host species, including humans.
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Forró B, Marton S, Kecskeméti S, Hornyák Á, Bányai K. Vaccine-associated rabies in red fox, Hungary. Vaccine 2019; 37:3535-3538. [PMID: 31109719 DOI: 10.1016/j.vaccine.2019.05.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 10/26/2022]
Abstract
Rabies vaccine strain was isolated from a red fox (Vulpes vulpes) with signs of neurological disorder during an oral vaccination campaign in 2015, Hungary. The whole genome sequence of the isolated strain shared >99.9% nucleotide sequence identity to the whole genomes of vaccines strains recently used in Hungarian oral vaccination campaigns. The neuroinvasive potential of rabies vaccines that leads to development of clinical manifestations is rarely seen among wild animals; however, the observed residual pathogenicity needs awareness of field experts and requires close monitoring of rabies cases in areas where elimination programs are implemented.
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Affiliation(s)
- Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Szilvia Marton
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Sándor Kecskeméti
- Veterinary Diagnostic Directorate, National Food Chain Safety Office, Debrecen, Hungary
| | - Ákos Hornyák
- Veterinary Diagnostic Directorate, National Food Chain Safety Office, Budapest, Hungary
| | - Krisztián Bányai
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary.
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Gellért Á, Pósa T, Fábián A, Szabó L, Bóka K, Forró B, Salánki K, Drahos L, Tóth E, Juhász A, Balázs E. A single point mutation on the cucumber mosaic virus surface induces an unexpected and strong interaction with the F1 complex of the ATP synthase in Nicotiana clevelandii plants. Virus Res 2018; 251:47-55. [PMID: 29730309 DOI: 10.1016/j.virusres.2018.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/27/2018] [Accepted: 05/03/2018] [Indexed: 11/15/2022]
Abstract
A previous study showed that a single amino acid difference in the cucumber mosaic virus (CMV) capsid protein (CP) elicits unusual symptoms. The wild-type strain (CMV-R) induces green mosaic symptoms and malformation while the mutant strain (CMV-R3E79R) causes chlorotic lesions on inoculated leaves and strong stunting with necrosis on systemic leaves. Virion preparations of CMV-R and CMV-R3E79R were partially purified from Nicotiana clevelandii A. Gray and analysed by two-dimensional gel electrophoresis. Their separated protein patterns showed remarkable differences at the 50-75 kDa range, both in numbers and intensity of spots, with more protein spots for the mutant CMV. Mass spectrometry analysis demonstrated that the virion preparations contained host proteins identified as ATP synthase alpha and beta subunits as well as small and large Rubisco subunits, respectively. Virus overlay protein binding assay (VOPBA), immunogold electron microscopy and modified ELISA experiments were used to prove the direct interaction between the virus particle and the N. clevelandii ATP synthase F1 motor complex. Protein-protein docking study revealed that the electrostatic change in the mutant CMV can introduce stronger interactions with ATP synthase F1 complex. Based on our findings we suggest that the mutation present in the CP can have a direct effect on the long-distance movement and systemic symptoms. In molecular view the mutant CMV virion can lethally block the rotation of the ATP synthase F1 motor complex which may lead to cell apoptosis, and finally to plant death.
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Affiliation(s)
- Ákos Gellért
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary.
| | - Tímea Pósa
- Plant Protection Institute, Georgikon Faculty, Pannon University, Keszthely, Hungary
| | - Attila Fábián
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - László Szabó
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Károly Bóka
- Department of Plant Anatomy, Eötvös Loránd University, Budapest, Hungary
| | - Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Katalin Salánki
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Eszter Tóth
- MS Proteomics Research Group, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Angéla Juhász
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
| | - Ervin Balázs
- Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary
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Marosi A, Dufkova L, Forró B, Felde O, Erdélyi K, Širmarová J, Palus M, Hönig V, Salát J, Tikos R, Gyuranecz M, Růžek D, Martina B, Koraka P, Osterhaus ADME, Bakonyi T. Combination therapy of rabies-infected mice with inhibitors of pro-inflammatory host response, antiviral compounds and human rabies immunoglobulin. Vaccine 2018; 37:4724-4735. [PMID: 29805091 DOI: 10.1016/j.vaccine.2018.05.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/02/2018] [Accepted: 05/12/2018] [Indexed: 02/06/2023]
Abstract
Recent studies demonstrated that inhibitors of pro-inflammatory molecular cascades triggered by rabies infection in the central nervous system (CNS) can enhance survival in mouse model and that certain antiviral compounds interfere with rabies virus replication in vitro. In this study different combinations of therapeutics were tested to evaluate their effect on survival in rabies-infected mice, as well as on viral load in the CNS. C57Bl/6 mice were infected with Silver-haired bat rabies virus (SHBRV)-18 at virus dose approaching LD50 and LD100. In one experimental group daily treatments were initiated 4 h before-, in other groups 48 or 96 h after challenge. In the first experiment therapeutic combination contained inhibitors of tumour necrosis factor-α (infliximab), caspase-1 (Ac-YVAD-cmk), and a multikinase inhibitor (sorafenib). In the treated groups there was a notable but not significant increase of survival compared to the virus infected, non-treated mice. The addition of human rabies immunoglobulins (HRIG) to the combination in the second experiment almost completely prevented mortality in the pre-exposure treatment group along with a significant reduction of viral titres in the CNS. Post-exposure treatments also greatly improved survival rates. As part of the combination with immunomodulatory compounds, HRIG had a higher impact on survival than alone. In the third experiment the combination was further supplemented with type-I interferons, ribavirin and favipiravir (T-705). As a blood-brain barrier opener, mannitol was also administered. This treatment was unable to prevent lethal consequences of SHBRV-18 infection; furthermore, it caused toxicity in treated mice, presumably due to interaction among the components. In all experiments, viral loads in the CNS were similar in mice that succumbed to rabies regardless of treatment. According to the findings, inhibitors of detrimental host response to rabies combined with antibodies can be considered among the possible therapeutic and post-exposure options in human rabies cases.
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Affiliation(s)
- András Marosi
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária krt. 23 - 25, 1143 Budapest, Hungary.
| | - Lucie Dufkova
- Department of Virology, Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic
| | - Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Orsolya Felde
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Károly Erdélyi
- National Food Chain Safety Office, Veterinary Diagnostic Directorate, Tábornok u. 2, 1149 Budapest, Hungary
| | - Jana Širmarová
- Department of Virology, Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic
| | - Martin Palus
- Department of Virology, Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic
| | - Václav Hönig
- Department of Virology, Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic
| | - Jiří Salát
- Department of Virology, Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic
| | - Réka Tikos
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária krt. 23 - 25, 1143 Budapest, Hungary
| | - Miklós Gyuranecz
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Daniel Růžek
- Department of Virology, Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic; Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branisovska 31, CZ-37005 Ceske Budejovice, Czech Republic
| | - Byron Martina
- Artemis One Health Research Foundation, Delft, The Netherlands
| | - Penelope Koraka
- Viroscience Lab, Erasmus Medical Centre, Wytemaweg 80 3015CN, Rotterdam, The Netherlands
| | - Albert D M E Osterhaus
- Artemis One Health Research Foundation, Delft, The Netherlands; Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Germany
| | - Tamás Bakonyi
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária krt. 23 - 25, 1143 Budapest, Hungary; Viral Zoonoses, Emerging and Vector-Borne Infections Group, Institute of Virology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
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Kaszab E, Marton S, Forró B, Bali K, Lengyel G, Bányai K, Fehér E. Characterization of the genomic sequence of a novel CRESS DNA virus identified in Eurasian jay (Garrulus glandarius). Arch Virol 2017; 163:285-289. [PMID: 29052057 DOI: 10.1007/s00705-017-3598-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/30/2017] [Indexed: 11/30/2022]
Abstract
Circular replication associated protein (Rep)-encoding ssDNA (CRESS DNA) viruses have diverse genomic architecture and are widely distributed in different ecosystems. In this study we characterized the complete genomic sequence of a novel circovirus-like virus, Garrulus glandarius associated circular virus-1 (GgaCV-1). The genome size (1971 nt) and other features (the nonanucleotide, rolling circle replication motif and SF3 helicase motif) are also reminiscent of circoviruses. Similar genomes with uni-directionally localized and overlapping rep and cap genes are typical of type V CRESS DNA viruses that were identified in invertebrates and environmental samples of aquatic ecosystems. GgaCV-1 showed the highest aa identity with partial rep sequences detected in bat feces (77%) and with the rep (54%) and cap (42%) of Lake Sarah-associated circular virus-23 of New Zealand freshwater mussel origin. A dietary origin for GgaCV-1 could not be excluded as the virus was detected in the cloacal swab specimen of an Eurasian jay. Further studies may help to reveal the linkage among variable organisms regarding virus transmission.
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Affiliation(s)
- Eszter Kaszab
- Institute for Veterinary Medical Research, Centre of Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, Budapest, 1581, Hungary
| | - Szilvia Marton
- Institute for Veterinary Medical Research, Centre of Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, Budapest, 1581, Hungary
| | - Barbara Forró
- Institute for Veterinary Medical Research, Centre of Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, Budapest, 1581, Hungary
| | - Krisztina Bali
- Institute for Veterinary Medical Research, Centre of Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, Budapest, 1581, Hungary
| | - György Lengyel
- Military Medical Center of Hungarian Defense Force, Róbert Károly krt. 44, Budapest, 1134, Hungary
| | - Krisztián Bányai
- Institute for Veterinary Medical Research, Centre of Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, Budapest, 1581, Hungary.
| | - Enikő Fehér
- Institute for Veterinary Medical Research, Centre of Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, Budapest, 1581, Hungary
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Fehér E, Kaszab E, Forró B, Bali K, Marton S, Lengyel G, Bányai K. Genome sequence of a mallard duck origin cyclovirus, DuACyV-1. Arch Virol 2017; 162:3925-3929. [DOI: 10.1007/s00705-017-3566-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/09/2017] [Indexed: 01/28/2023]
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Hornyák Á, Juhász T, Forró B, Kecskeméti S, Bányai K. Resurgence of rabies in Hungary during 2013-2014: An attempt to track the origin of identified strains. Transbound Emerg Dis 2017; 65:e14-e24. [PMID: 28497505 DOI: 10.1111/tbed.12658] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Indexed: 01/01/2023]
Abstract
In 2013-2014, accumulation of rabies episodes raised concerns regarding ongoing elimination programme in Hungary. Nearly four dozen cases were identified over a 13-month period in the central region of the country far behind the immunization zones. Although the outbreak was successfully controlled, the origin of disease remained unknown. In this study, we sequenced the partial N and G genes from 47 Hungarian rabies virus (RV) strains isolated from the 2013-2014 outbreak. Sequencing and phylogenetic analysis of the N and G genes showed that the Hungarian RV isolates share high nucleotide similarity among each other (up to 100%). When analysing the N gene, comparable sequence similarity was seen between the outbreak strains and some historic Romanian RV strains. Unfortunately, in the lack of available sequence data from the Romanian RV strains, the genetic relationship within the G gene could not be determined. Phylogenetic analysis of Hungarian RV isolates detected in the past revealed that multiple independent RV lineages circulated in our country over the past 25 years. The parental strain of the 2013-2014 outbreak may have been imported independently perhaps from east through transborder movement of a reservoir animal. Next to the introduction, this imported RV strain seems to have spread clonally in the affected area. Our findings indicate that despite effective control measures that, overall, minimized the incidence of rabies over the past decade, field and laboratory monitoring needs to be continued to make rabies elimination programme in Hungary successful.
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Affiliation(s)
- Á Hornyák
- Veterinary Diagnostic Directorate, National Food Chain Safety Office, Budapest, Hungary
| | - T Juhász
- Veterinary Diagnostic Directorate, National Food Chain Safety Office, Budapest, Hungary
| | - B Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - S Kecskeméti
- Veterinary Diagnostic Directorate, National Food Chain Safety Office, Debrecen, Hungary
| | - K Bányai
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
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Fehér E, Doszpoly A, Horváth B, Marton S, Forró B, Farkas SL, Bányai K, Juhász T. Whole genome sequencing and phylogenetic characterization of brown bullhead (Ameiurus nebulosus) origin ranavirus strains from independent disease outbreaks. Infect Genet Evol 2016; 45:402-407. [PMID: 27717748 DOI: 10.1016/j.meegid.2016.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 09/23/2016] [Accepted: 10/02/2016] [Indexed: 11/30/2022]
Abstract
Ranaviruses are emerging pathogens associated with high mortality diseases in fish, amphibians and reptiles. Here we describe the whole genome sequence of two ranavirus isolates from brown bullhead (Ameiurus nebulosus) specimens collected in 2012 at two different locations in Hungary during independent mass mortality events. The two Hungarian isolates were highly similar to each other at the genome sequence level (99.9% nucleotide identity) and to a European sheatfish (Silurus glanis) origin ranavirus (ESV, 99.7%-99.9% nucleotide identity). The coding potential of the genomes of both Hungarian isolates, with 136 putative proteins, were shared with that of the ESV. The core genes commonly used in phylogenetic analysis of ranaviruses were not useful to differentiate the two brown bullhead ESV strains. However genome-wide distribution of point mutations and structural variations observed mainly in the non-coding regions of the genome suggested that the ranavirus disease outbreaks in Hungary were caused by different virus strains. At this moment, due to limited whole genome sequence data of ESV it is unclear whether these genomic changes are useful in molecular epidemiological monitoring of ranavirus disease outbreaks. Therefore, complete genome sequencing of further isolates will be needed to identify adequate genetic markers, if any, and demonstrate their utility in disease control and prevention.
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Affiliation(s)
- Enikő Fehér
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Andor Doszpoly
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Balázs Horváth
- Biological Research Center, Hungarian Academy of Sciences, Temesvári krt. 62, Szeged, 6726, Hungary
| | - Szilvia Marton
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Barbara Forró
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Szilvia L Farkas
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary
| | - Krisztián Bányai
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungária krt. 21, 1143 Budapest, Hungary.
| | - Tamás Juhász
- Veterinary Diagnostic Directorate, National Food Chain Safety Office, Tábornok u. 2, 1143 Budapest, Hungary
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Marton S, Bányai K, Forró B, Lengyel G, Székely C, Varga Á, Molnár K. Molecular genetic investigations on Balantidium ctenopharyngodoni Chen, 1955, a parasite of the grass carp (Ctenopharyngodon idella). Acta Vet Hung 2016; 64:213-21. [PMID: 27342092 DOI: 10.1556/004.2016.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Balantidium ctenopharyngodoni is a common ciliate in Hungary, infecting the hindgut of grass carp (Ctenopharyngodon idella), a cyprinid fish of Chinese origin. Although data have already been presented on its occasional pathogenic effect on the endothelium of the host, generally it is a harmless inhabitant of the gut. Phylogenetic analysis of the 18S rDNA and ITS fragments of this protozoan proved that it is in the closest phylogenetic relationship with endocommensalist and symbiont ciliates of mammals feeding on large volumes of green forage, in a similar way as Balantidium spp. known from algae-eating marine fishes.
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Affiliation(s)
- Szilvia Marton
- 1Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, H-1581 Budapest, Hungary
| | - Krisztián Bányai
- 1Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, H-1581 Budapest, Hungary
| | - Barbara Forró
- 1Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, H-1581 Budapest, Hungary
| | - György Lengyel
- 2Military Medical Centre, Hungarian Defence Forces, Budapest, Hungary
| | - Csaba Székely
- 1Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, H-1581 Budapest, Hungary
| | - Ádám Varga
- 1Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, H-1581 Budapest, Hungary
| | - Kálmán Molnár
- 1Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, P.O. Box 18, H-1581 Budapest, Hungary
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Kallert DM, Forró B, Eszterbauer E. Inosine-arginine salt as a promising agent for in vitro activation of waterborne fish-pathogenic myxozoan actinospores. Dis Aquat Organ 2014; 109:149-154. [PMID: 24991742 DOI: 10.3354/dao02729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Mucus-derived nucleosides serve as key host cues for myxozoan actinospore fish host recognition, but to date their use for experimental actinospore activation in the laboratory or application in disease prevention has not progressed very far. One obstacle has been the low solubility of pure inosine and guanosine. To overcome this, we used inosine-arginine salt (ino-arg), which incorporates both high activation properties and high solubility. We tested its efficacy both in microassays directly observing reactions of actinospores of 2 distantly related myxozoan species, Myxobolus cerebralis and M. pseudodispar in comparison to inosine, as well as its actinospore-inactivation properties by premature polar capsule discharge in an infection experiment. Ino-arg was considerably more effective in eliciting polar capsule discharge and sporoplasm emission at much lower concentrations than pure inosine and, in contrast to the latter, remained dissolved in aqueous solution. Ino-arg exposure of M. pseudodispar actinospores resulted in polar capsule discharge and sporoplasm emission before host contact and subsequently in a lower infection rate in roach Rutilus rutilus.
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Affiliation(s)
- D M Kallert
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, 21 Hungária krt., 1143 Budapest, Hungary
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Eszterbauer E, Sipos D, Forró B, Ová PB, Holzer AS. Molecular characterization of Sphaerospora molnari (Myxozoa), the agent of gill sphaerosporosis in common carp Cyprinus carpio carpio. Dis Aquat Organ 2013; 104:59-67. [PMID: 23670080 DOI: 10.3354/dao02584] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Sphaerospora molnari Lom, Dyková, Pavlásková and Grupcheva, 1983 often causes severe infections in the gills and skin of common carp fingerlings Cyprinus carpio carpio in Central Europe. Although most Sphaerospora spp. are coelozoic and affect the excretory system of fish, S. molnari develops mature spores in the epithelia of gill filaments, making it a rare representative of histozoic freshwater species within the genus. On the basis of a partial 18S rDNA sequence assigned as belonging to S. molnari, previous phylogenetic studies located the species within the Myxobolus clade. In the present study, S. molnari isolates from Hungary and the Czech Republic were characterized based on morphology, DNA sequence analysis and phylogenetic comparison. The obtained 3714 bp final consensus 18S rDNA sequence of the parasite showed several, sometimes extremely long inserts in the variable regions of the gene and differed considerably from the one published in GenBank in 2002. In situ hybridization confirmed the validity of the obtained DNA sequence and detected pre-sporogonic blood stages in the interstitium and blood vessels of the kidney. Phylogenetic analysis showed that S. molnari clusters within the Sphaerospora sensu stricto clade with a high support, revealing it as the first known histozoic member of the Sphaerospora subclade comprising parasites of freshwater fish.
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Affiliation(s)
- E Eszterbauer
- Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
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