HIV pharmacology: barriers to the eradication of HIV from the CNS
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Updated: Aug 6, 2026

Rapid Screening of HIV Reverse Transcriptase and Integrase Inhibitors
Published on: April 9, 2014
Bryan McGee1, Nathalie Smith, Francesca Aweeka
1Drug Research Unit, University of California-San Francisco, 521 Parnassus Avenue, San Francisco, CA 94143, USA.
Insights
Complete eradication of human immunodeficiency virus type 1 (HIV-1) remains elusive due to latent viral reservoirs in the central nervous system (CNS). HIV-1 in the CNS is linked to HIV dementia, impacting up to 20% of untreated individuals.
Area of Science:
- Neuroscience
- Virology
- Infectious Diseases
Background:
- Latent human immunodeficiency virus type 1 (HIV-1) reservoirs in lymphoid tissue, testes, and the central nervous system (CNS) impede total eradication.
- HIV-1 infection in the CNS is a significant clinical concern, associated with the development of HIV dementia in a substantial proportion of untreated patients.
Purpose of the Study:
- To review current theories on HIV-1 infection within the CNS.
- To describe factors limiting antiretroviral drug penetration into the CNS.
- To summarize current treatments for CNS HIV-1 infection and HIV encephalopathy.
Main Methods:
- Literature review of existing theories and research on HIV-1 CNS infection.
- Analysis of physiological and pharmacological factors affecting antiretroviral drug CNS penetration.
- Synthesis of current treatment strategies for CNS HIV-1 and HIV encephalopathy.
Main Results:
- HIV-1 establishes latent reservoirs in the CNS, contributing to treatment challenges.
- Physiological barriers and drug properties limit effective antiretroviral therapy delivery to the CNS.
- Current treatments for CNS HIV-1 infection and HIV encephalopathy are reviewed.
Conclusions:
- Understanding CNS HIV-1 reservoirs and drug penetration is crucial for developing effective eradication strategies.
- Further research is needed to optimize antiretroviral therapy for CNS penetration and efficacy.
- Effective management of HIV-1 in the CNS is essential to prevent neurological complications like HIV dementia.
Abstract:
Total eradication of HIV-1 is not yet achievable, in part because reservoirs of latent HIV-1 can develop within lymphoid tissue, the testes, and the central nervous system (CNS). The presence of HIV-1 in the CNS is clinically significant because of its association with the development of HIV dementia, which occurs in up to one fifth of untreated patients. This review summarizes current theory regarding HIV-1 infection within the CNS, describes physiologic and pharmacologic factors limiting CNS penetration of antiretroviral drugs used to treat HIV-1 infection, and reviews current treatment of CNS HIV-1 infection and HIV encephalopathy.
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