ArticleJournal of neurovirology2019
HIV-1 Tat and opioids act independently to limit antiretroviral brain concentrations and reduce blood-brain barrier integrity.
Article in Journal of neurovirology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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Who cites it
29 citing papers in PubMed, 34 citations in OpenAlex.
- Enhancing the Sensitivity of Mass Spectrometry Imaging through Spatial Signal Averaging.Journal of the American Society for Mass Spectrometry · 2026Article
- Neuroinflammatory and Neurodegenerative Roles of HIV-1 Tat: A Review of Recent Evidence.Advances in experimental medicine and biology · 2026Review
- Differential effects of fentanyl compared to morphine on neuroinflammatory signaling in the brain in EcoHIV-infected mice.Journal of neurovirology · 2025Article
- Microvascular Dysfunction, Mitochondrial Reprogramming, and Inflammasome Activation as Critical Regulators of Ischemic Stroke Severity Induced by Chronic Exposure to Prescription Opioids.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025Article
- Examining the effects of the HIV-1 protein Tat and morphine on antiretroviral accumulation and distribution within the brain.Clinical and translational science · 2024Article
- Structural and Functional Dysregulation of the Brain Endothelium in HIV Infection and Substance Abuse.Cells · 2024Review
- Something to talk about; crosstalk disruption at the neurovascular unit during HIV infection of the CNS.NeuroImmune pharmacology and therapeutics · 2024Article
- Fentanyl dysregulates neuroinflammation and disrupts blood-brain barrier integrity in HIV-1 Tat transgenic mice.Journal of neurovirology · 2024Article
- Application of infrared matrix-assisted laser desorption electrospray ionization mass spectrometry for morphine imaging in brain tissue.Analytical and bioanalytical chemistry · 2023Article
- Progressive Degeneration and Adaptive Excitability in Dopamine D1 and D2 Receptor-Expressing Striatal Neurons Exposed to HIV-1 Tat and Morphine.Cellular and molecular neurobiology · 2023Article
- Morphine pharmacokinetics and opioid transporter expression at the blood-retina barrier of male and female mice.Frontiers in pharmacology · 2023Article
- Review
- Dolutegravir Suppresses Thermogenesis via Disrupting Uncoupling Protein 1 Expression and Mitochondrial Function in Brown/Beige Adipocytes in Preclinical Models.The Journal of infectious diseases · 2022Article
- Independent actions by HIV-1 Tat and morphine to increase recruitment of monocyte-derived macrophages into the brain in a region-specific manner.Neuroscience letters · 2022Article
- Expression of Human Immunodeficiency Virus Transactivator of Transcription (HIV-TatJournal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2022Article
- Systems biology analyses reveal enhanced chronic morphine distortion of gut-brain interrelationships in simian human immunodeficiency virus infected rhesus macaques.Frontiers in neuroscience · 2022Article
- HIV-1 and drug abuse comorbidity: Lessons learned from the animal models of NeuroHIV.Neuroscience letters · 2021Review
- Treating viruses in the brain: Perspectives from NeuroAIDS.Neuroscience letters · 2021Review
- Chronic morphine administration differentially modulates viral reservoirs in SIVmac251 infected rhesus macaque model.Journal of virology · 2021Article
- Effect of Opioid Use on Immune Activation and HIV Persistence on ART.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2020Review
Corrections and comments
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Authors and funding
10 authors at 4 institutions in 1 country.
Funding
Abstract
Poor antiretroviral penetration may contribute to human immunodeficiency virus (HIV) persistence within the brain and to neurocognitive deficits in opiate abusers. To investigate this problem, HIV-1 Tat protein and morphine effects on blood-brain barrier (BBB) permeability and drug brain penetration were explored using a conditional HIV-1 Tat transgenic mouse model. Tat and morphine effects on the leakage of fluorescently labeled dextrans (10-, 40-, and 70-kDa) into the brain were assessed. To evaluate effects on antiretroviral brain penetration, Tat+ and Tat- mice received three antiretroviral drugs (dolutegravir, abacavir, and lamivudine) with or without concurrent morphine exposure. Antiretroviral and morphine brain and plasma concentrations were determined by LC-MS/MS. Morphine exposure, and, to a lesser extent, Tat, significantly increased tracer leakage from the vasculature into the brain. Despite enhanced BBB breakdown evidenced by increased tracer leakiness, morphine exposure led to significantly lower abacavir concentrations within the striatum and significantly less dolutegravir within the hippocampus and striatum (normalized to plasma). P-glycoprotein, an efflux transporter for which these drugs are substrates, expression and function were significantly increased in the brains of morphine-exposed mice compared to mice not exposed to morphine. These findings were consistent with lower antiretroviral concentrations in brain tissues examined. Lamivudine concentrations were unaffected by Tat or morphine exposure. Collectively, our investigations indicate that Tat and morphine differentially alter BBB integrity. Morphine decreased brain concentrations of specific antiretroviral drugs, perhaps via increased expression of the drug efflux transporter, P-glycoprotein.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.