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Blood, 1 May 2004, Vol. 103, No. 9, pp. 3282-3286. Prepublished online as a Blood First Edition Paper on January 15, 2004; DOI 10.1182/blood-2003-09-3283. This Article Full Text (PDF) All Versions of this Article: 2003-09-3283v1 103/9/3282    most recent Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Rights and Permissions Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Farel, C. E Articles by Davey, R. T Search for Related Content PubMed PubMed Citation Articles by Farel, C. E Articles by Davey, R. T Social Bookmarking                   What's this? Submitted September 29, 2003 Accepted December 31, 2003 Induction and Maintenance Therapy with Intermittent Interleukin-2 in HIV-1 Infection Claire E Farel, Doreen G Chaitt, Barbara K Hahn, Jorge A Tavel, Joseph A Kovacs, Michael A Polis, Henry Masur, Dean A Follmann, H C Lane, and Richard T Davey* Laboratory of Immunoregulation, NIAID/NIH, Bethesda, MD, USA Critical Care Medicine Department, NIH Clinical Center, Bethesda, MD, USA * Corresponding author; email: rdavey{at}niaid.nih.gov. Studies establishing that intermittent sc interleukin-2 (IL-2) therapy can lead to substantial CD4 cell increases in many HIV-infected patients have generally been of limited duration. We studied 77 patients participating in active longitudinal studies of sc IL-2 therapy at our center in order to determine the long-term feasibility of this approach. Following initial induction, patients in each trial were eligible to receive intermittent 5-day cycles of sc IL-2 treatment at individualized doses and frequencies capable of maintaining CD4 counts at post-induction levels. The mean duration of study participation to date is 5.9 (range: 1.0 - 9.3) years. Mean baseline CD4 cell count and CD4% values of 521 cells/microLiter and 27% have risen to 1005 cells/µl and 38%, respectively, at 90 months. The mean number of sc IL-2 cycles required to achieve and maintain these increases was 10 (range: 3 - 29) cycles, and the current mean interval of cycling required to maintain these elevations is 39 (median = 35, range: 2 - 91) months. We conclude that sc IL-2 therapy is capable of maintaining CD4 cell increases for an extended period using a remarkably low frequency of intermittent cycling. These observations may contribute to patients' acceptance of sc IL-2 as a favorable long-term treatment strategy. CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this? This article has been cited by other articles: M. Moll, J. Snyder-Cappione, G. Spotts, F. M. Hecht, J. K. Sandberg, and D. F. Nixon Expansion of CD1d-restricted NKT cells in patients with primary HIV-1 infection treated with interleukin-2 Blood, April 15, 2006; 107(8): 3081 - 3083. [Abstract] [Full Text] [PDF] M. L. Janas, P. Groves, N. Kienzle, and A. Kelso IL-2 Regulates Perforin and Granzyme Gene Expression in CD8+ T Cells Independently of Its Effects on Survival and Proliferation J. Immunol., December 15, 2005; 175(12): 8003 - 8010. [Abstract] [Full Text] [PDF] A. Audige, E. Schlaepfer, H. Joller, and R. F. Speck Uncoupled Anti-HIV and Immune-Enhancing Effects when Combining IFN-{alpha} and IL-7 J. Immunol., September 15, 2005; 175(6): 3724 - 3736. [Abstract] [Full Text] [PDF]

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