ArticleGlia2009
HIV-1 Tat and morphine have interactive effects on oligodendrocyte survival and morphology.
Article in Glia, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
66 citing papers in PubMed, 84 citations in OpenAlex.
- Neuroinflammatory and Neurodegenerative Roles of HIV-1 Tat: A Review of Recent Evidence.Advances in experimental medicine and biology · 2026Review
- HIV-1 Tat Impairment of Mitochondrial Respiration via Complexes I and II Can Be Ameliorated by Allopregnanolone in Opioid-Exposed or Opioid-Naïve Cells and Mice.Antioxidants (Basel, Switzerland) · 2025Article
- HIV-1 Tat protein alters medial prefrontal cortex neuronal activity and recognition memory.iScience · 2025Article
- LY2940094, an NOPR antagonist, promotes oligodendrocyte generation and myelin recovery in an NOPR independent manner.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024Article
- Extracellular vesicles produced by HIV-1 Nef-expressing cells induce myelin impairment and oligodendrocyte damage in the mouse central nervous system.Journal of neuroinflammation · 2024Article
- A helping HAND: therapeutic potential of MAGL inhibition against HIV-1-associated neuroinflammation.Frontiers in immunology · 2024Article
- Microglia proliferation underlies synaptic dysfunction in the prefrontal cortex: implications for the pathogenesis of HIV-1-associated neurocognitive and affective alterations.Journal of neurovirology · 2023Article
- Article
- 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
- Human immunodeficiency virus-1 Tat exerts its neurotoxic effects by downregulating Sonic hedgehog signaling.Journal of neurovirology · 2022Article
- Advances in the Experimental Models of HIV-Associated Neurological Disorders.Current HIV/AIDS reports · 2021Review
- HIV-1 and drug abuse comorbidity: Lessons learned from the animal models of NeuroHIV.Neuroscience letters · 2021Review
- HIV Infection and Related Mental Disorders.Brain sciences · 2021Review
- Morphine and HIV-1 Tat interact to cause region-specific hyperphosphorylation of tau in transgenic mice.Neuroscience letters · 2021Article
- HIV-Associated Neurotoxicity: The Interplay of Host and Viral Proteins.Mediators of inflammation · 2021Review
- Independent and Combined Effects of Nicotine or Chronic Tobacco Smoking and HIV on the Brain: A Review of Preclinical and Clinical Studies.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2020Review
- Functional impact of HIV-1 Tat on cells of the CNS and its role in HAND.Cellular and molecular life sciences : CMLS · 2020Review
- Opioid and neuroHIV Comorbidity - Current and Future Perspectives.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2020Review
- Escalating morphine dosing in HIV-1 Tat transgenic mice with sustained Tat exposure reveals an allostatic shift in neuroinflammatory regulation accompanied by increased neuroprotective non-endocannabinoid lipid signaling molecules and amino acids.Journal of neuroinflammation · 2020Article
- Chronic HIV-1 Tat exposure alters anterior cingulate cortico-basal ganglia-thalamocortical synaptic circuitry, associated behavioral control, and immune regulation in male mice.Brain, behavior, & immunity - health · 2020Article
6 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 4 institutions in 1 country.
Funding
Abstract
Human immunodeficiency virus (HIV)-infected individuals who abuse opiates show faster progression to AIDS, and enhanced incidence of HIV-1 encephalitis. Most opiates with abuse liability are preferential agonists for mu-opioid receptors (MORs), and MORs are expressed on both neurons and glia, including oligodendrocytes (OLs). Tat, gp120, and other viral toxins, cause neurotoxicity in vitro and/or when injected into brain, and co-exposure to opiates can augment HIV-1 protein-induced insults to both glial and neuronal populations. We examined the effects of HIV-1 Tat +/- opiate exposure on OL survival and differentiation. In vivo studies utilized transgenic mice expressing Tat(1-86) regulated by an inducible glial fibrillary acidic protein promoter. Although MBP levels were unchanged on immunoblots, certain structural and apoptotic indices were abnormal. After only 2 days of Tat induction, OLs showed an upregulation of active caspase-3 that was enhanced by morphine exposure. Tat also upregulated TUNEL staining, but only in the presence of morphine. Tat significantly reduced the length of processes in Golgi-Kopsch impregnated OLs. A greater proportion of cells exhibited diminished or aberrant cytoplasmic processes, especially when mice expressing Tat were co-exposed to morphine. Collectively, our data show that OLs in situ are extremely sensitive to effects of Tat +/- morphine, although it is not clear if immature OLs as well as differentiated OLs are targeted equally. Significant elevations in caspase-3 activity and TUNEL labeling, and evidence of increased degeneration/regeneration of OLs exposed to Tat +/- morphine suggest that toxicity toward OLs may be accompanied by heightened OL turnover.
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What OpenQuestion holds
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.