Abstract
About one third of acquired immunodeficiency syndrome cases in the USA have been attributed to the use of injected addictive drugs, frequently involving opioids like heroin and morphine, establishing them as significant predisposing risk factors for contracting human immunodeficiency virus type 1 (HIV-1). Accumulating evidence from in vitro and in vivo experimental systems indicates that opioids act in concert with HIV-1 proteins to exacerbate dysregulation of neural and immune cell function and survival through diverse molecular mechanisms. In contrast, the impact of opioid exposure and withdrawal on the viral life cycle and HIV-1 disease progression itself is unclear, with conflicting reports emerging from the simian immunodeficiency virus and simian–human immunodeficiency virus infection models. However, these studies suggest a potential role of opioids in elevated viral production. Because human microglia, astrocytes, CD4+ T lymphocytes, and monocyte-derived macrophages express opioid receptors, it is likely that intracellular signaling events triggered by morphine facilitate enhancement of HIV-1 infection in these target cell populations. This review highlights the biochemical changes that accompany prolonged exposure to and withdrawal from morphine that synergize with HIV-1 proteins to disrupt normal cellular physiological functions especially within the central nervous system. More importantly, it collates evidence from epidemiological studies, animal models, and heterologous cell systems to propose a mechanistic link between such physiological adaptations and direct modulation of HIV-1 production. Understanding the opioid–HIV-1 interface at the molecular level is vitally important in designing better treatment strategies for HIV-1-infected patients who abuse opioids.
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Acknowledgments
Dr. Michael Nonnemacher was supported by faculty development funds provided by the Department of Microbiology and Immunology and the Institute for Molecular Medicine and Infectious Disease. Dr. Brian Wigdahl was supported in part by funds from the Public Health Service, National Institutes of Health through grants from the National Institute of Neurological Disorders and Stroke, NS32092 and NS46263, the National Institute of Drug Abuse, DA19807 (Dr. Brian Wigdahl, Principal Investigator). Dr. Olimpia Meucci was supported in part by funds from the Public Health Service, National Institutes of Health through grants from the National Institute of Drug Abuse, DA19808 and DA15014 (Dr. Olimpia Meucci, Principal Investigator).
Marianne Strazza was supported by a Ruth L. Kirschstein National Research Service Award 5T32MH079785. The contents of this review are solely the responsibility of the authors and do not necessarily represent the official views of the National Institutes of Health.
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Anupam Banerjee and Marianne Strazza contributed equally to the manuscript.
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Banerjee, A., Strazza, M., Wigdahl, B. et al. Role of mu-opioids as cofactors in human immunodeficiency virus type 1 disease progression and neuropathogenesis. J. Neurovirol. 17, 291–302 (2011). https://doi.org/10.1007/s13365-011-0037-2
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DOI: https://doi.org/10.1007/s13365-011-0037-2