Pathogenesis of ovine lentivirus-induced arthritis: Phenotypic evaluation of T lymphocytes in synovial fluid, synovium, and peripheral circulation

Suzanne Kennedy-Stoskopf, Christine Zink, Opendra Narayan

Research output: Contribution to journalArticlepeer-review

Abstract

Sheep and goats develop a chronic, progressive arthritis reminiscent of rheumatoid arthritis, but caused by lentiviruses related to human immunodeficiency virus. The distribution of T lymphocytes in peripheral circulation of two infected sheep with arthritis, one infected sheep with interstitial pneumonia, three asymptomatic sheep, and three uninfected sheep was evaluated. Sheep with clinical disease have depressed ratios of CD4/CD8 lymphocytes in peripheral circulation compared to asymptomatic and uninfected animals. In one sheep, the depressed ratio was due to an absolute increase in CD8-positive lymhocytes. The predominant lymphocyte populations in both synovial fluid and synovium from this animal were also CD8 positive. Macrophages were the other predominant cell population in synovial fluid and were infected with lentivirus. Little cell-free virus was detected in the synovial fluid, although 1 in 400 cells was infected as determined by infectious center assays. Infected cells in the synovial fluid had a reduction in virus gene expression compared to infected cells in peripheral circulation. This reduction in virus gene expression may be due to the presence of interferon-like activity in the synovial fluid.

Original languageEnglish (US)
Pages (from-to)323-330
Number of pages8
JournalClinical Immunology and Immunopathology
Volume52
Issue number2
DOIs
StatePublished - Aug 1989

ASJC Scopus subject areas

  • Immunology and Allergy
  • Pathology and Forensic Medicine
  • Immunology

Fingerprint

Dive into the research topics of 'Pathogenesis of ovine lentivirus-induced arthritis: Phenotypic evaluation of T lymphocytes in synovial fluid, synovium, and peripheral circulation'. Together they form a unique fingerprint.

Cite this