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Current Opinion in HIV & AIDS:
doi: 10.1097/COH.0b013e328302ebbb
Immune restoration disease: Edited by Robert Colebunders and Martyn French

Immunopathogenesis of immune reconstitution disease in HIV patients responding to antiretroviral therapy

Kestens, Luca; Seddiki, Nabilab; Bohjanen, Paul Rc

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Purpose of review: The aim of this article is to review the most recent literature regarding the immunopathogenesis of pathogen-associated immune reconstitution disease and to discuss the role of immune activation and various effector molecules and cells such as macrophages, effector and regulatory T cells, and natural killer cells in immune reconstitution disease.

Recent findings: Many HIV patients receiving antiretroviral treatment develop immune reconstitution disease, which is characterized by exaggerated inflammatory immune responses to replicating or dead pathogens. In the majority of these cases, immune reconstitution disease is associated with restoration of pathogen-specific cellular immune responses involving CD4+ or CD8+ effector T cells. The precise conditions that trigger immune reconstitution disease have not yet been identified. Immune reconstitution disease patients have overt immune activation, which may be due to poor homeostatic control after the fast initial immune recovery in patients receiving antiretroviral therapy. Poor homeostatic control in immune reconstitution disease patients may be linked to unbalanced restoration of effector and regulatory T cells.

Summary: Although the precise mechanism of immune reconstitution disease is not well understood, it is probably related to rapid restoration of pathogen-specific immune responses and poor homeostatic control that promote exaggerated immunopathological responses, especially if viable pathogens or pathogen debris are present at high concentrations.

© 2008 Lippincott Williams & Wilkins, Inc.


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