Distribution of equid herpesvirus-1 (EHV-1) in respiratory tract associated lymphoid tissue: implications for cellular immunity.
Abstract: Twelve adult ponies and 2 conventional foals were exposed intranasally to EHV-1, strain Ab4 (TCID50 10(-6.6) and samples of respiratory tract associated lymphoid tissues were recovered between 12 h and 13 days after infection. Infectious virus was detected in tissue homogenates using susceptible cell monolayers and expression of viral antigens was monitored using indirect immunoperoxidase histochemistry on paraffin sections. The results showed both infectious EHV-1 and viral antigens in respiratory tract associated lymph nodes 12 h after exposure. Infected leucocytes were identified morphologically as lymphocytes, monocytes, macrophages and plasma cells. The rapid intracellular localisation of EHV-1 in lymph nodes implies that cell mediated immunity is an important aspect of the equine response to this virus.
Publication Date: 1994-11-01 PubMed ID: 7889921DOI: 10.1111/j.2042-3306.1994.tb04052.xGoogle Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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The research investigates the distribution of Equid Herpesvirus-1 (EHV-1), a common horse virus, in the respiratory tract-associated lymphoid tissue of ponies and foals, highlighting the importance of cell-mediated immunity in response to the virus.
Methodology
- The study involved twelve adult ponies and two standard foals, all of which were exposed to EHV-1 via intranasal means.
- The virus used to infect the subjects was of strain Ab4 (TCID50 10(-6.6)).
- Respiratory tract associated lymphoid tissue samples were collected from the subjects from as early as 12 hours to as late as 13 days after infection.
Detection of the Virus
- These tissue homogenates were tested for the presence of infectious EHV-1 using susceptible cell monolayers.
- The research team employed indirect immunoperoxidase histochemistry on paraffin sections to monitor the expression of viral antigens.
Results
- The results showed traces of both infectious EHV-1 and viral antigens present in lymph nodes associated with the respiratory tract as early as 12 hours post-exposure.
- Infected leukocytes (white blood cells) were morphologically identified as lymphocytes, monocytes, macrophages, and plasma cells.
Implications
- The rapid intracellular localization of EHV-1 in lymph nodes, as revealed in the study, implies the importance of cell-mediated immunity in the equine response to this virus.
- This could guide further research and advancements in the treatment and prevention of EHV-1 infections, possibly by targeting cell-mediated immunity.
Cite This Article
APA
Kydd JH, Smith KC, Hannant D, Livesay GJ, Mumford JA.
(1994).
Distribution of equid herpesvirus-1 (EHV-1) in respiratory tract associated lymphoid tissue: implications for cellular immunity.
Equine Vet J, 26(6), 470-473.
https://doi.org/10.1111/j.2042-3306.1994.tb04052.x Publication
Researcher Affiliations
- Department of Infectious Diseases, Animal Health Trust, Newmarket, UK.
MeSH Terms
- Animals
- Antigens, Viral / analysis
- Female
- Herpesviridae Infections / immunology
- Herpesviridae Infections / veterinary
- Herpesvirus 1, Equid / immunology
- Herpesvirus 1, Equid / isolation & purification
- Horse Diseases / immunology
- Horse Diseases / virology
- Horses
- Immunity, Cellular
- Lymphoid Tissue / virology
- Male
- Respiratory Tract Infections / immunology
- Respiratory Tract Infections / veterinary
- Respiratory Tract Infections / virology
- Virion / isolation & purification
Grant Funding
- Wellcome Trust
Citations
This article has been cited 26 times.- Thieulent CJ, Sutton G, Toquet MP, Fremaux S, Hue E, Fortier C, Pléau A, Deslis A, Abrioux S, Guitton E, Pronost S, Paillot R. Oral Administration of Valganciclovir Reduces Clinical Signs, Virus Shedding and Cell-Associated Viremia in Ponies Experimentally Infected with the Equid Herpesvirus-1 C(2254) Variant.. Pathogens 2022 May 4;11(5).
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- Zarski LM, Vaala WE, Barnett DC, Bain FT, Soboll Hussey G. A Live-Attenuated Equine Influenza Vaccine Stimulates Innate Immunity in Equine Respiratory Epithelial Cell Cultures That Could Provide Protection From Equine Herpesvirus 1.. Front Vet Sci 2021;8:674850.
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