Cited by 22Blood Coagulation and Thrombosis MechanismsHerpesvirus Infections and TreatmentsAnimal Virus Infections Studies

Equine herpesvirus type 1 infection induces procoagulant activity in equine monocytes.

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Yeo, Wee Ming, Osterrieder, Nikolaus, Stokol, Tracy·2013·Veterinary Research

Abstract

The alphaherpesvirus, equine herpesvirus type 1 (EHV-1), is a highly prevalent cause of equine infectious abortion and encephalomyelopathy. These syndromes have been attributed to ischemic necrosis from thrombosis in placental and neural vessels, although the mechanisms underlying thrombosis are unknown. After inhalation, EHV-1 establishes a peripheral blood mononuclear cell-associated viremia, with monocytes being a target of infection. Monocytes are also the main source of tissue factor (TF) in diseased states. Since TF is the primary activator of coagulation, increased monocyte TF expression could be involved in EHV-1-associated thrombosis. We hypothesized that EHV-1 infection would induce TF-dependent procoagulant activity in equine monocytes. Monocyte-enriched fractions of blood were infected with abortigenic (RacL11, NY03) and neuropathogenic (Ab4) EHV-1 strains. All strains induced procoagulant activity, to variable degrees, within 1 to 4 h, with maximal activity at 24 h, after infection. Virus-induced procoagulant activity was similar to that seen with lipopolysaccharide, a known stimulant of TF-mediated procoagulant responses. Virus-induced procoagulant activity was factor VIIa-dependent and temporally associated with TF gene transcription, implicating TF as the main driver of the activity. Procoagulant activity was mildly decreased (30-40%) when virus was inactivated by ultraviolet light or when infected cells were treated with aphidicolin, a virus DNA polymerase inhibitor, suggesting early events of virus infection (attachment, entry or intracellular trafficking) are the primary stimulus of procoagulant activity. Our results indicate that EHV-1 rapidly stimulates procoagulant activity in equine monocytes in vitro. The EHV-1-induced procoagulant activity in monocytes may contribute to clinical thrombosis in horses with EHV-1 infection.

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Authors
Yeo, W. M., Osterrieder, N., & Stokol, T.
Affiliations
  • Cornell University (US)
  • Freie Universität Berlin (DE)
Corresponding author
Stokol, Tracy
Venue
Veterinary Research
Published
2013-03-11
Volume
44
Issue
1
Pages
16-16
ISSN
  • 0928-4249 (ISSN-L)
  • 1297-9716
OpenAlex
W2119459206
Cited by
22
References
67
Citations by year
2024: 1 · 2023: 1 · 2022: 1 · 2021: 4 · 2020: 1 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 2 · 2015: 4 · 2014: 1 · 2013: 1
FWCI
1.91
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Veterinary Research (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Refubium (Universitätsbibliothek der Freien Universität Berlin) (submittedVersion, cc-by)
  • Universitätsbibliothek der FU Berlin Hochschulschriftenstelle u. Dokumentenserver (cc-by)
Topics
  • Health Sciences › Medicine › Hematology › Blood Coagulation and Thrombosis Mechanisms
  • Health Sciences › Medicine › Epidemiology › Herpesvirus Infections and Treatments
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
Keywords
equine herpesvirus 1, procoagulant activity, tissue factor, thrombosis, encephalomyelopathy, alphaherpesvirus, factor VIIa, aphidicolin, lipopolysaccharide
MeSH terms
Animals, Blood Coagulation Factors, Herpesvirus 1, Equid, Female, Flow Cytometry, Herpesviridae Infections, Horse Diseases, Horses, Monocytes, RNA, Messenger, Real-Time Polymerase Chain Reaction

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