Evidence map›Paper›PMID 24970341›Full record

ArticleJournal of neuroinflammation2014

The anti-inflammatory role of tissue inhibitor of metalloproteinase-2 in lipopolysaccharide-stimulated microglia.

Eun-Jung Lee, Hee-Sun Kim

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

33 citing papers in PubMed, 54 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. The TIMP protein family: diverse roles in pathophysiology.American journal of physiology. Cell physiology · 2024
    Review
  9. Article
  10. Article
  11. Monocyte/Macrophage Heterogeneity during Skin Wound Healing in Mice.Journal of immunology (Baltimore, Md. : 1950) · 2022
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  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

2 authors at 1 institution in 1 country.

Eun-Jung Lee
Hee-Sun KimDepartment of Molecular Medicine and Global Top5 Research Program, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Mok-6-dong 911-1, Yangchun-Ku, 158-710 Seoul, South Korea. hskimp@ewha.ac.kr.
Ewha Womans University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTissue inhibitors of metalloproteinases (TIMPs) are known to be endogenous inhibitors of matrix metalloproteinases (MMPs). Our preliminary study showed that TIMP-2 is constitutively expressed in microglia but significantly inhibited by lipopolysaccharide (LPS) treatment. The current study was undertaken to investigate the role of TIMP-2 in microglia.

methodsThe expression of TIMP-2 was evaluated in the BV2 mouse microglial cell line and rat primary cultured microglia. To investigate the role of TIMP-2, a TIMP-2 expression plasmid or small interfering RNA (siRNA) was introduced into BV2 cells by transient transfection, and their effects on LPS-induced inflammatory reactions were examined. We further analyzed the molecular mechanism underlying the anti-inflammatory effects of TIMP-2 by electrophoretic mobility shift assay (EMSA), a reporter gene assay and Western blot analysis.

resultsOverexpression of TIMP-2 significantly inhibited the production of nitric oxide (NO), TNF-α, IL-1β, and reactive oxygen species (ROS), while increasing anti-inflammatory IL-10 production. On the other hand, knockdown of TIMP-2 augmented the production of pro-inflammatory molecules and downregulated IL-10 in LPS-stimulated BV2 cells. The results suggest that endogenously expressed TIMP-2 plays an anti-inflammatory role. Further mechanistic studies revealed that overexpression of TIMP-2 suppresses microglial activation via inhibition of the activity of mitogen-activated protein kinases (MAPKs) and NF-κB with enhancement of the activity of anti-inflammatory Nrf2 and cAMP-response element binding protein (CREB) transcription factors. TIMP-2 also inhibited the activity and expression of LPS-induced MMP-3, -8, and -9. Finally, we demonstrated that TIMP-2 exerts a neuroprotective effect via the inhibition of microglial activation.

conclusionsEnhancement of TIMP-2 expression may be a potential therapeutic target for neuroinflammatory disorders.

Indexed as

AnimalsAnimals, NewbornCell DeathCells, CulturedCollagenasesCREB-Binding ProteinCytokinesGene Expression RegulationLipopolysaccharidesMiceMicrogliaMitogen-Activated Protein KinasesNeuroblastomaNeuronsNF-E2-Related Factor 2NitritesCollagenasesCREB-Binding ProteinCytokinesLipopolysaccharidesMitogen-Activated Protein KinasesNF-E2-Related Factor 2NitritesReactive Oxygen SpeciesRNA, Small InterferingTissue Inhibitor of Metalloproteinase-2

Identifiers

PMID24970341
PMCPMC4091675
OpenAlexW2012000805

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.