ArticleJournal of neuroinflammation2020
Microstructural brain abnormalities in HIV+ individuals with or without chronic marijuana use.
Article in Journal of neuroinflammation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.
What it found
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Who cites it
10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 11 citations in OpenAlex.
- The Impact of Cannabis Use on Cognition in People with HIV: Evidence of Function-Dependent Effects and Mechanisms from Clinical and Preclinical Studies.Current HIV/AIDS reports · 2024Pooled it
- Implications and prospects of immunological and neuroimaging research in HIV-associated neurocognitive disorders.Frontiers in neurologyPooled it
- Joint effects of human immunodeficiency virus (HIV) and cannabis on neurocognition.Neuropsychology · 2025Article
- Beneficial and adverse effects of THC on cognition in the HIV-1 transgenic rat model: Importance of exploring task- and sex-dependent outcomes.Brain, behavior, and immunity · 2025Article
- A longitudinal study of cannabis use and risk for cognitive and functional decline among older adults with HIV.AIDS and behavior · 2023Article
- The relation between cannabis use, dependence severity and white matter microstructure: A diffusion tensor imaging study.Addiction biology · 2022Article
- Review
- Daily Cannabis Use is Associated With Lower CNS Inflammation in People With HIV.Journal of the International Neuropsychological Society : JINS · 2021Article
- Confound, Cause, or Cure: The Effect of Cannabinoids on HIV-Associated Neurological Sequelae.Viruses · 2021Review
- Long non-coding RNA HULC regulates TLR4 expression by acting as ceRNA to attract miR-663b in skin fibroblasts of pediatric burns.American journal of translational research · 2021Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
Abstract
objectiveCognitive deficits and microstructural brain abnormalities are well documented in HIV-positive individuals (HIV+). This study evaluated whether chronic marijuana (MJ) use contributes to additional cognitive deficits or brain microstructural abnormalities that may reflect neuroinflammation or neuronal injury in HIV+.
methodUsing a 2 × 2 design, 44 HIV+ participants [23 minimal/no MJ users (HIV+), 21 chronic active MJ users (HIV + MJ)] were compared to 46 seronegative participants [24 minimal/no MJ users (SN) and 22 chronic MJ users (SN + MJ)] on neuropsychological performance (7 cognitive domains) and diffusion tensor imaging metrics, using an automated atlas to assess fractional anisotropy (FA), axial (AD), radial (RD), and mean (MD) diffusivities, in 18 cortical and 4 subcortical brain regions.
resultsCompared to SN and regardless of MJ use, the HIV+ group had lower FA and higher diffusivities in multiple white matter and subcortical structures (p < 0.001-0.050), as well as poorer cognition in Fluency (p = 0.039), Attention/Working Memory (p = 0.009), Learning (p = 0.014), and Memory (p = 0.028). Regardless of HIV serostatus, MJ users had lower AD in uncinate fasciculus (p = 0.024) but similar cognition as nonusers. HIV serostatus and MJ use showed an interactive effect on mean diffusivity in the right globus pallidus but not on cognitive function. Furthermore, lower FA in left anterior internal capsule predicted poorer Fluency across all participants and worse Attention/Working Memory in all except SN subjects, while higher diffusivities in several white matter tracts also predicted lower cognitive domain Z-scores. Lastly, MJ users with or without HIV infection showed greater than normal age-dependent FA declines in superior longitudinal fasciculus, external capsule, and globus pallidus.
conclusionsOur findings suggest that, except in the globus pallidus, chronic MJ use had no additional negative influence on brain microstructure or neurocognitive deficits in HIV+ individuals. However, lower AD in the uncinate fasciculus of MJ users suggests axonal loss in this white matter tract that connects to cannabinoid receptor rich brain regions that are involved in verbal memory and emotion. Furthermore, the greater than normal age-dependent FA declines in the white matter tracts and globus pallidus in MJ users suggest that older chronic MJ users may eventually have lesser neuronal integrity in these brain regions.
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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.