Evidence map›Paper›PMID 32222586›Full record

ArticleMolecular immunology2020

Methamphetamine alters the TLR4 signaling pathway, NF-κB activation, and pro-inflammatory cytokine production in LPS-challenged NR-9460 microglia-like cells.

Ana M Vargas, Dormarie E Rivera-Rodriguez, Luis R Martinez

Open access · greenAbstract read
In one paragraph

Article in Molecular immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.8field-weighted citation impact, top 9% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 42 citations in OpenAlex.

  1. Review
  2. Observational
  3. Article
  4. Review
  5. Article
  6. Review
  7. Heat-Treated ParaprobioticJournal of microbiology and biotechnology · 2024
    Article
  8. Review
  9. Article
  10. Review
  11. Role of Microglia in Psychostimulant Addiction.Current neuropharmacology · 2023
    Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Methamphetamine Dysregulation of the Central Nervous System and Peripheral Immunity.The Journal of pharmacology and experimental therapeutics · 2021
    Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 2 countries.

Ana M VargasDepartment of Biological Sciences, The Border Biomedical Research Center, The University of Texas at El Paso, TX, United States.
Dormarie E Rivera-RodriguezDepartment of Biology, University of Puerto Rico-Ponce, PR, United States.
Luis R MartinezDepartment of Biological Sciences, The Border Biomedical Research Center, The University of Texas at El Paso, TX, United States; Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL, United States. Electronic address: LMartinez@dental.ufl.edu.
The University of Texas at El Paso · USUniversity of Puerto Rico at Ponce · PR

Funding

UTEP Border Biomedical Research CenterU54MD007592 · NIMHD · UNIVERSITY OF TEXAS EL PASO · PI Bibiana Marie Mancera · 2019 to 2026
$35.1M
TCCG12MD007592 · NIMHD · UNIVERSITY OF TEXAS EL PASO · PI KIRKEN, ROBERT A. · 2012 to 2018
$19.4M
UNIVERSITY OF PUERTO RICO PONCE RESEARCH INITIATIVE FOR SCIENTIFIC ENHANCEMENT: UR25GM096955 · NIGMS · UNIVERSITY OF PUERTO RICO PONCE · PI SUAREZ-MARTINEZ, EDU B · 2011 to 2020
$5.7M
Unraveling Cryptococcus neoformans mechanisms of brain invasion and colonizationR01AI145559 · NIAID · UNIVERSITY OF TEXAS EL PASO · PI MARTINEZ, LUIS R · 2019 to 2023
$2.6M
Impact of Methamphetamine Induced IL-6 Production on Wound Healing and InflammationR15GM117501 · NIGMS · NEW YORK INST OF TECHNOLOGY · PI RAMOS, RADDY LEONARDO · 2016 to 2016
$432k
NIAID NIH HHS R01 AI145559NIGMS NIH HHS R15 GM117501NIGMS NIH HHS R25 GM096955NIMHD NIH HHS G12 MD007592NIMHD NIH HHS U54 MD007592
6 · The paper itself

Abstract

Methamphetamine (METH) is a major public health and safety problem worldwide. METH is psychostimulant that activates microglia via the toll-like receptor (TLR) 4/MD2 complex, modulating the abundant production of pro-inflammatory cytokines in the central nervous system (CNS). The TLR4/MD2 complex on the surface of microglia recognizes pathogen-associated molecular patterns such as lipopolysaccharide (LPS) resulting in brain tissue inflammation and neuronal damage. Since METH has been associated with microglia-induced neurotoxicity, we hypothesized that METH impairs the expression of TLR4 and activation of NF-κB in NR-9460 microglia-like cells after LPS challenge. We demonstrated that METH decreases the distribution and expression of TLR4 receptors on the surface of microglia-like cells after incubation with endotoxin. Moreover, METH impairs the TLR4/MD2 complex signaling pathways, compromises the activation of NF-κB, and reduces the production of pro-inflammatory mediators in microglia-like cells upon LPS stimulation. Interestingly, microglia-like cells treated with METH and challenged with LPS showed considerable cellular morphological changes including enlarged nuclei and ruffled surface. Our results suggest that METH may have a significant impact on microglial-induced neuroinflammation, neurotoxicity, and the CNS defense against infection. It also highlights the importance of studying the effects of METH on the molecular and cellular components of users' CNS immunity. Finally, animal studies exploring the role of METH on the effectors functions of microglia after antigenic exposure are necessary to understand drug-related inflammation and neural damage in users.

Indexed as

AnimalsCentral Nervous System StimulantsCytokinesEncephalitisHumansLipopolysaccharidesMethamphetamineMiceMicrogliaNF-kappa BSignal TransductionToll-Like Receptor 4Central Nervous System StimulantsCytokinesLipopolysaccharidesMethamphetamineNF-kappa BTlr4 protein, mouseToll-Like Receptor 4LPSMethamphetamineMicrogliaMinocyclineTLR4

Identifiers

PMID32222586
PMCPMC8079139
OpenAlexW3013401914

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.