Immunological and Virological Impact of Highly Active Antiretroviral Therapy Initiated during Acute HIV‐1 Infection
1Partners AIDS Research Center, Infectious Disease Unit, and 2Howard Hughes Medical Institute, Massachusetts General Hospital and Division of AIDS, Harvard Medical School, Boston, Massachusetts; 3Basic Research Program, Science Applications International Corporation–Frederick, Laboratory of Genomic Diversity, National Cancer Institute, Frederick, Maryland; 4Infectious Diseases Unit, University Medical Center Hamburg–Eppendorf, Hamburg, and 5Department of Internal Medicine, University of Bonn, Bonn, Germany
The immunological and virological impact of short‐term treatment initiated during acute human immunodeficiency virus type 1 (HIV‐1) infection was assessed prospectively in 20 subjects, 12 of whom initiated highly active antiretroviral therapy (HAART) for 24 weeks and then terminated treatment. Treatment resulted in suppression of viremia, an increase in the CD4+ T cell count, enhanced differentiation of HIV‐1–specific CD8+ T cells from effector memory to effector cells at week 24 of HAART, and significantly higher virus‐specific interferon‐γ+ CD8+ T cell responses after viral rebound (at week 48). However, despite these immunological changes, no differences in viremia or in the CD4+ T cell count were found 6 months after HAART was stopped, when treated subjects were compared with untreated subjects.
Received 21 November 2005; accepted 16 January 2006; electronically published 15 August 2006.
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(See the article by Hecht et al., on pages 725–33, and the editorial commentary by Kinloch–de Loes, on pages 721–4.)
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Financial support: Howard Hughes Medical Institute (grant to B.D.W.); the National Institutes of Health (NIH; grants RO1 AI50429 and U01 AI052403); and the German Federal Ministry of Education and Research, HIV Competence Network (grant FKZ 01KI0211 to J.v.L. and I.S.). The study on which this report was based was supported in part with federal funds from the National Cancer Institute (NCI), NIH (contract NO1‐CO‐12400). This research was supported in part by the Intramural Research Program of the Center for Cancer Research, NCI, NIH.
Potential conflicts of interest: none reported.
The content of this publication does not necessarily reflect the views or policies of the US Department of Health and Human Services, nor does mention of trade names, commercial products, or organizations imply endorsement by the US Government.
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Private practice, Berlin, Germany.





