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Journal of Virology, April 2004, p. 4011-4019, Vol. 78, No. 8
0022-538X/04/$08.00+0     DOI: 10.1128/JVI.78.8.4011-4019.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Gamma Interferon/Interleukin 10 Balance in Tissue Lymphocytes Correlates with Down Modulation of Mucosal Feline Immunodeficiency Virus Infection

Paul R. Avery* and Edward A. Hoover

Department of Microbiology, Immunology and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado 80523

Received 7 August 2003/ Accepted 6 January 2004

Understanding the early cytokine response to lentiviral infections may be critical to the design of prevention and treatment strategies. By using the feline immunodeficiency virus (FIV) model, we have documented an interleukin 10 (IL10)-dominated response in lymphoid tissue CD4+ and CD8+ T lymphocytes within the first 4 weeks after mucosal FIV infection. This profile coincided with the period of high tissue viral replication. By 10 weeks postinfection, tissue viral levels decreased significantly, and gamma interferon (IFN{gamma}) production in CD8+ T cells had increased to restore the IL10/IFN{gamma} ratio to control levels. Concurrently, increased production of IL6 and viral RNA was detected in macrophages. These temporal associations of viral replication with cytokine balance in tissues suggest roles for IL10 in the permissive stage of infection and IFN{gamma} in the subsequent down modulation of lentiviral infection.

* Corresponding author. Mailing address: Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523-1671. Phone: (970) 491-7838. Fax: (970) 491-0523. E-mail: paul.avery{at}colostate.edu.

Journal of Virology, April 2004, p. 4011-4019, Vol. 78, No. 8
0022-538X/04/$08.00+0     DOI: 10.1128/JVI.78.8.4011-4019.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • VandeWoude, S., Apetrei, C. (2006). Going Wild: Lessons from Naturally Occurring T-Lymphotropic Lentiviruses. Clin. Microbiol. Rev. 19: 728-762 [Abstract] [Full Text]  
  • TerWee, J. A., Yactor, J. K., Sondgeroth, K. S., VandeWoude, S. (2005). Puma Lentivirus Is Controlled in Domestic Cats after Mucosal Exposure in the Absence of Conventional Indicators of Immunity. J. Virol. 79: 2797-2806 [Abstract] [Full Text]  


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