Evidence map›Paper›PMID 24531553›Full record

ArticleThe Journal of clinical investigation2014

Extracellular caspase-6 drives murine inflammatory pain via microglial TNF-α secretion.

Temugin Berta, Chul-Kyu Park, Zhen-Zhong Xu, Ruo-Gang Xie, Tong Liu, Ning Lü, Yen-Chin Liu, Ru-Rong Ji

Abstract read
In one paragraph

Article in The Journal of clinical investigation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 120 papers.

0numbers the graph read from it
0cells of the map it votes in
120citing papers in PubMed
–field-weighted citation impact
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

120 citing papers in PubMed.

  1. Trial
  2. Glial cells in neuropathic pain.Physiological reviews · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Regulation of inflammatory processes by caspases.Nature reviews. Molecular cell biology · 2025
    Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Gene therapy for chronic pain management.Cell reports. Medicine · 2024
    Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Article

60 more citing papers are in PubMed but not listed here.

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

8 authors.

Temugin Berta
Chul-Kyu Park
Zhen-Zhong Xu
Ruo-Gang Xie
Tong Liu
Ning Lü
Yen-Chin Liu
Ru-Rong Ji

Funding

Neuronal and glial interactions of neuropathic painR01DE017794 · NIDCR · DUKE UNIVERSITY · PI BUCHHEIT, THOMAS · 2006 to 2021
$6.6M
Resolvins, protectins, and chronic pain resolution.R01NS067686 · NINDS · DUKE UNIVERSITY · PI JI, RU-RONG, SERHAN, CHARLES NICHOLAS · 2009 to 2013
$2.8M
Hemichannels, Astrocytic Release, and Neuropathic PainR01DE022743 · NIDCR · DUKE UNIVERSITY · PI JI, RU-RONG, NEDERGAARD, MAIKEN · 2012 to 2016
$2.0M
Resolution of chemotherapy-induced peripheral neuropathy by novel lipid mediatorR21NS082985 · NINDS · DUKE UNIVERSITY · PI XU, ZHEN-ZHONG · 2013 to 2014
$430k
NIDCR NIH HHS DE17794NIDCR NIH HHS DE22743NIDCR NIH HHS R01 DE017794NIDCR NIH HHS R01 DE022743NINDS NIH HHS NS67686NINDS NIH HHS NS82985NINDS NIH HHS R01 NS067686NINDS NIH HHS R21 NS082985
6 · The paper itself

Abstract

Increasing evidence indicates that the pathogenesis of neuropathic pain is mediated through spinal cord microglia activation. The intracellular protease caspase-6 (CASP6) is known to regulate neuronal apoptosis and axonal degeneration; however, the contribution of microglia and CASP6 in modulating synaptic transmission and pain is unclear. Here, we found that CASP6 is expressed specifically in C-fiber axonal terminals in the superficial spinal cord dorsal horn. Animals exposed to intraplantar formalin or bradykinin injection exhibited CASP6 activation in the dorsal horn. Casp6-null mice had normal baseline pain, but impaired inflammatory pain responses. Furthermore, formalin-induced second-phase pain was suppressed by spinal injection of CASP6 inhibitor or CASP6-neutralizing antibody, as well as perisciatic nerve injection of CASP6 siRNA. Recombinant CASP6 (rCASP6) induced marked TNF-α release in microglial cultures, and most microglia within the spinal cord expressed Tnfa. Spinal injection of rCASP6 elicited TNF-α production and microglia-dependent pain hypersensitivity. Evaluation of excitatory postsynaptic currents (EPSCs) revealed that rCASP6 rapidly increased synaptic transmission in spinal cord slices via TNF-α release. Interestingly, the microglial inhibitor minocycline suppressed rCASP6 but not TNF-α-induced synaptic potentiation. Finally, rCASP6-activated microglial culture medium increased EPSCs in spinal cord slices via TNF-α. Together, these data suggest that CASP6 released from axonal terminals regulates microglial TNF-α secretion, synaptic plasticity, and inflammatory pain.

Indexed as

AnimalsAxonsBradykininCaspase 6Caspase InhibitorsCells, CulturedFormaldehydeHyperalgesiaInflammationLong-Term PotentiationMaleMiceMice, Inbred C57BLMice, KnockoutMicrogliaNeuralgiaBradykininCasp6 protein, mouseCaspase 6Caspase InhibitorsFormaldehydeTumor Necrosis Factor-alpha

Identifiers

PMID24531553
PMCPMC3934175

What OpenQuestion holds

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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.