A study of lymphoid organs and serum proinflammatory cytokines in pigs infected with African swine fever virus genotype II

A study of lymphoid organs and serum proinflammatory cytokines in pigs infected with African... African swine fever virus (ASFV), the causative agent of one of the most important viral diseases of domestic pigs for which no vaccine is available, causes immune system disorders in infected animals. In this study, the serum levels of proinflammatory cytokines, as well as the histological and cellular constitution of lymphoid organs of pigs infected with ASFV genotype II were investigated. The results showed a high degree of lymphocyte depletion in the lymphoid organs, particularly in the spleen and lymph nodes, where ASFV infection led to a twofold decrease in the number of lymphocytes on the final day of infection. Additionally, ASFV-infected pigs had atypical forms of lymphocytes found in all lymphoid organs. In contrast to lymphocytes, the number of immature immune cells, particularly myelocytes, increased dramatically and reached a maximum on day 7 postinfection. The serum levels of TNF-α, IL-1β, IL-6, and IL-8 were evaluated. Proinflammatory cytokines showed increased levels after ASFV infection, with peak values at 7 days postinfection, and this highlights their role in the pathogenesis of ASFV. In conclusion, this study showed that ASFV genotype II, like other highly virulent strains, causes severe pathological changes in the immune system of pigs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

A study of lymphoid organs and serum proinflammatory cytokines in pigs infected with African swine fever virus genotype II

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Publisher
Springer Vienna
Copyright
Copyright © 2015 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-015-2401-7
Publisher site
See Article on Publisher Site

References

  • Pathogenesis of African swine fever in domestic pigs and European wild boar
    Blome, S; Gabriel, C; Beer, M
  • African swine fever virus infection in Ornithodoros ticks
    Burrage, T
  • Pathology of African swine fever: the role of monocyte-macrophage
    Gómez-Villamandos, JC; Bautista, MJ; Sánchez-Cordón, PJ; Carrasco, L
  • Pathogenesis of highly virulent African swine fever virus in domestic pigs exposed via intraoropharyngeal, intranasopharyngeal, and intramuscular inoculation, and by direct contact with infected pigs
    Howey, EB; O’Donnell, V; Carvalho Ferreira, HC; Borca, MV; Arzt, J

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