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Roll V, Diesendorf V, Roewer N, Abdelgawad A, Roewer J, Trimpert J, Bodem J. A systematic analysis of anthocyanins inhibiting human, murine, and equine herpesviruses. Phytomedicine 2024; 124:155314. [PMID: 38190783 DOI: 10.1016/j.phymed.2023.155314] [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] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/22/2023] [Accepted: 12/25/2023] [Indexed: 01/10/2024]
Abstract
BACKGROUND Herpesviruses are common animal and human pathogens that cause severe health problems in children, immunocompromised patients, and infected animals with a host range from fish to mammals. Anthocyanin-containing plant extracts have been described as potent antivirals, which might cause fewer harmful side effects than direct-acting antivirals. Here, we report that an extract of Aristotelia chilensis (Molina) Stuntz (Elaeocarpaceae) (MBE) with a high content of the anthocyanin delphinidin suppresses lytic replication of equine, murine and human herpesviruses of replication in vitro. METHODS We treated cultured cells with MBE and purified individual anthocyanins present in the extract to determine the most active compound at different concentrations. We subsequently infected the cultures with human herpesviruses 1 (HSV-1) or 8 (HHV-8), murine cytomegalovirus (CMV), or equine herpesviruses 1 (EHV-1) and determined the number of infected cells and viral infectivity. RESULTS MBE inhibited the HSV-1, murine CMV, and EHV-1 by up to 2 orders of magnitude. In the presence of the stabilizing randomly methylated-beta-cyclodextrin, the inhibitory concentration could be lowered significantly. We identified delphinidin as an active antiviral compound and showed that the non-glycosylated delphinidin solved and stabilized with sulfobutylether-beta-cyclodextrin allowed usage of approximately 50 times lower concentrations. CONCLUSION Glycosylated delphinidin derivatives were identified as active antiviral compounds of MBE. This suggests that plant extracts rich in delphinidin-anthocyanins have potent antiviral properties that could be used in treatment and prevention.
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Affiliation(s)
- Valeria Roll
- Julius-Maximilians-University of Würzburg, Institute for Virology and Immunobiology, Versbacher Strasse 7, 97078 Würzburg, Germany
| | - Viktoria Diesendorf
- Julius-Maximilians-University of Würzburg, Institute for Virology and Immunobiology, Versbacher Strasse 7, 97078 Würzburg, Germany
| | - Norbert Roewer
- Universitätsklinikum Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany
| | - Azza Abdelgawad
- Freie Universität Berlin, Institut für Virologie, Robert von Ostertag-Str. 7, 14163 Berlin, Germany
| | - Joachim Roewer
- Dermatologikum Hamburg, Stephansplatz 5, 20354 Hamburg, Germany
| | - Jakob Trimpert
- Freie Universität Berlin, Institut für Virologie, Robert von Ostertag-Str. 7, 14163 Berlin, Germany
| | - Jochen Bodem
- Julius-Maximilians-University of Würzburg, Institute for Virology and Immunobiology, Versbacher Strasse 7, 97078 Würzburg, Germany.
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Rozek W, Kwasnik M, Malinowska A, Stasiak K, Larska M, Rola J. Proteomic analysis of the secretome of equine herpesvirus-1 infected rabbit kidney cells. Res Vet Sci 2021; 140:134-141. [PMID: 34428631 DOI: 10.1016/j.rvsc.2021.08.014] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 07/30/2021] [Accepted: 08/12/2021] [Indexed: 11/25/2022]
Abstract
Herpesviruses are the main cause of abortions and respiratory or neurological disorders in horses. Various disease patterns are suspected to be associated with the A2254G point mutation in the DNA polymerase sequence (ORF30) of the herpesvirus genome, although the importance of this link is still under debate. Based on a label-free quantitative proteomic analysis, the differences in the secretion of some host proteins between rabbit kidney cells infected with A2254 and cells of the same line infected with G2254 equine herpesvirus 1 (EHV-1) strains were identified. In both groups, downregulation of proteins involved in insulin growth factor and extracellular matrix pathway regulation was observed. Among 12 proteins with increased secretion, 8 were regulated only in G2254 EHV-1 infection. Those were endoplasmic reticulum chaperones with calcium binding properties, related to unfolded protein response and mitochondria. It was presumed that the secretion of proteins such as calreticulin, Hspa5 or endoplasmin may contribute to the pathogenesis of EHV-1 infection.
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Affiliation(s)
- Wojciech Rozek
- Department of Virology, National Veterinary Research Institute, 24-100 Pulawy, Poland.
| | - Malgorzata Kwasnik
- Department of Virology, National Veterinary Research Institute, 24-100 Pulawy, Poland
| | - Agata Malinowska
- Environmental Laboratory of Mass Spectrometry, Polish Academy of Sciences, Institute of Biochemistry and Biophysics, 02-106 Warsaw, Poland
| | - Karol Stasiak
- Department of Virology, National Veterinary Research Institute, 24-100 Pulawy, Poland
| | - Magdalena Larska
- Department of Virology, National Veterinary Research Institute, 24-100 Pulawy, Poland
| | - Jerzy Rola
- Department of Virology, National Veterinary Research Institute, 24-100 Pulawy, Poland
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Ohta M, Bannai H, Nemoto M, Kambayashi Y, Tamura N, Tsujimura K. Antibody Responses Against Equine Influenza Virus Induced by Concurrent and by Consecutive Use of an Inactivated Equine Influenza Virus Vaccine and a Modified Live Equine Herpesvirus Type 1 Vaccine in Thoroughbred Racehorses. J Equine Vet Sci 2020; 94:103221. [PMID: 33077093 DOI: 10.1016/j.jevs.2020.103221] [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: 06/30/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 11/26/2022]
Abstract
An inactivated equine influenza virus (EIV) vaccine and a live equine herpesvirus type 1 (EHV-1) vaccine are usually administered concurrently to Thoroughbred racehorses in Japan. The objective of this study was to evaluate whether concurrent administration of an inactivated EIV vaccine and a live EHV-1 vaccine in Thoroughbred racehorses influences the antibody response against EIV. We compared the antibody response against EIV in horses administered both vaccines on the same day (Group A; n = 27) and the response in horses administered an inactivated EIV vaccine first and then a live EHV-1 vaccine 1-2 weeks later (Group B; n = 20). In both groups, geometric mean hemagglutination inhibition (HI) titers against A/equine/Ibaraki/1/2007 and A/equine/Yokohama/aq13/2010 increased significantly after EIV vaccination. However, the percentage of horses that showed a twofold increase or greater in HI titers against A/equine/Yokohama/aq13/2010 was significantly higher in Group B (75%) than in Group A (37%; P = .02). These results suggest that the concurrent use of an inactivated EIV vaccine and a live EHV-1 vaccine reduced the immune response against EIV to some extent, and it would be better to use these vaccines consecutively, especially for naïve horses or horses whose vaccination history is incomplete.
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Affiliation(s)
- Minoru Ohta
- Molecular Biology Division, Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan.
| | - Hiroshi Bannai
- Molecular Biology Division, Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan
| | - Manabu Nemoto
- Molecular Biology Division, Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan
| | - Yoshinori Kambayashi
- Molecular Biology Division, Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan
| | - Norihisa Tamura
- Clinical Veterinary Medicine Division, Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan
| | - Koji Tsujimura
- Molecular Biology Division, Equine Research Institute, Japan Racing Association, Shimotsuke, Tochigi, Japan
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Ji C, Cai S, Lu G, Zhang G. Challenges to develop an equine herpesvirus vaccine in China. J Infect 2020; 80:578-606. [PMID: 32017972 DOI: 10.1016/j.jinf.2020.01.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 01/18/2020] [Indexed: 11/20/2022]
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Stasiak K, Dunowska M, Rola J. Prevalence and sequence analysis of equid herpesviruses from the respiratory tract of Polish horses. Virol J 2018; 15:106. [PMID: 29996858 PMCID: PMC6042439 DOI: 10.1186/s12985-018-1018-3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 07/04/2018] [Indexed: 12/24/2022] Open
Abstract
Background Equid herpesviruses (EHVs) are widespread in equine populations worldwide. While the infection with equine α-herpesviruses (EHV-1 and EHV-4) has been linked to several clinical outcomes, the pathogenic potential for equine γ-herpesviruses (EHV-2 and EHV-5) is still unclear. The objective of the current study was to determine the prevalence of infection with EHVs among Polish horses, to investigate factors associated with EHV infections among horses sampled, and to determine genetic variability within Polish EHV-2 isolates. Methods Virus-specific real-time PCR assays were used for detection of EHV-1, EHV-2, EHV-4 and EHV-5 in nasal swabs collected from 540 horses from 13 national horse studs located throughout Poland. A proportion of EHV-2/5 positive samples were subjected to virus isolation followed by amplification and analysis of partial glycoprotein B sequence. Results Overall, 448/540 (83.0%) horses sampled were positive for at least one virus. The most prevalent was infection with EHV-2 (77.2%), followed by EHV-5 (47.0%), and EHV-4 (0.4%). None of the horses was positive for EHV-1. Approximately half of the virus-infected horses were positive for both EHV-2 and EHV-5. The proportion of EHV-2/5 positive horses varied by age, breed, and season. Only 8.0% of horses sampled, mostly Arabians, showed clinical signs of respiratory disease at the time of sampling. The viral load of both EHV-2 and EHV-5 DNA was highest in swabs from young horses, which was particularly evident for EHV-2 infected foals. Mean viral loads in nasal swabs collected from diseased horses were higher than in swabs from healthy horses. That was also true for EHV-2 when only diseased Arabian foals were considered, but the levels of EHV-5 DNA were lower in swabs from diseased than from healthy foals. In agreement with other studies, there was a considerable variability between Polish EHV-2 sequences, with no clustering of sequences from horses with different health status. The level of EHV-2 variability seemed to differ between different studs/breeds. Conclusions The presence of foals and yearlings on a property is likely to increase the risk of active EHV-2/5 infection among in-contact horses. The existence of breed-specific differences in susceptibility to EHV-2/5 infections should be further investigated, as it may provide one variable that needs to be considered in attempts to associate EHV-2/5 infections with disease. Overall, the data presented add to the existing knowledge of the epidemiology and biology of equine γ-herpesviruses, with the long-term goal of better understanding of the pathogenesis and the impact of infections with these viruses on the well-being of the horse.
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Affiliation(s)
- Karol Stasiak
- Department of Virology, National Veterinary Research Institute, Al. Partyzantow 57, 24-100, Pulawy, Poland
| | - Magdalena Dunowska
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - Jerzy Rola
- Department of Virology, National Veterinary Research Institute, Al. Partyzantow 57, 24-100, Pulawy, Poland.
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Laabassi F, Hue E, Fortier C, Morilland E, Legrand L, Hans A, Pronost S. Epidemiology and molecular detection of equine herpesviruses in western Algeria in 2011. Vet Microbiol 2017; 207:205-209. [PMID: 28757025 DOI: 10.1016/j.vetmic.2017.06.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 06/23/2017] [Accepted: 06/23/2017] [Indexed: 11/15/2022]
Abstract
An episode of acute equine respiratory infection was reported in western Algeria (Tiaret province) between February and March 2011, affecting a large population of horses. Nasal swabs (n=100) were taken from horses aged between 1 and 27 years, presenting with cough and mucopurulent nasal discharge. The prevalence of equine respiratory virus infections was examined using quantitative polymerase chain reaction (qPCR). One, or more, of four equine respiratory viruses were detected in the nasal swabs of 90 of 100 horses (90%) and the detection rate of equine herpesvirus type 1 (EHV-1), equine herpesvirus type 4 (EHV-4), equine herpesvirus type 2 (EHV-2) and equine herpesvirus type 5 (EHV-5) were 2%, 14%, 90% and 75%, respectively. Equine influenza virus and equine arteritis virus were not detected in any samples. Among the 90 infected horses, 70 were co-infected with EHV-2 and EHV-5 and 14 others were co-infected with EHV-4, EHV-2 and EHV-5. The present study shows a positivity rate of 97.3% for EHV-5 in young horses aged <3years; a finding which decreased with age. Viral load of EHV-5 was significantly higher in <3years whereas no effect of age was observed with EHV-2. The study shows that equine herpesviruses 1, 2, 4 and 5 are endemic in horse populations from Algeria as detected for the first time by qPCR.
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Affiliation(s)
- F Laabassi
- ESPA Laboratory, Department of Veterinary, Institute of Veterinary Sciences and Agronomics Sciences, University of Batna-1, 05000 Batna, Algeria.
| | - E Hue
- LABÉO-Frank Duncombe,1 route de Rosel, 14053 CAEN Cedex 4, France; Caen Normandy University, France, UNICAEN EA7450 BioTARGen, 3 rue Nelson Mandela, 14280 Saint-Contest, France.
| | - C Fortier
- LABÉO-Frank Duncombe,1 route de Rosel, 14053 CAEN Cedex 4, France; Caen Normandy University, France, UNICAEN EA7450 BioTARGen, 3 rue Nelson Mandela, 14280 Saint-Contest, France.
| | - E Morilland
- Dozulé Laboratory for Equine Diseases, Virology Unit, Anses, Goustranville, 14430 Dozulé, France.
| | - L Legrand
- LABÉO-Frank Duncombe,1 route de Rosel, 14053 CAEN Cedex 4, France; Caen Normandy University, France, UNICAEN EA7450 BioTARGen, 3 rue Nelson Mandela, 14280 Saint-Contest, France.
| | - A Hans
- Dozulé Laboratory for Equine Diseases, Virology Unit, Anses, Goustranville, 14430 Dozulé, France.
| | - S Pronost
- LABÉO-Frank Duncombe,1 route de Rosel, 14053 CAEN Cedex 4, France; Caen Normandy University, France, UNICAEN EA7450 BioTARGen, 3 rue Nelson Mandela, 14280 Saint-Contest, France.
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