Evidence map›Paper›PMID 23847084›Full record

ArticleMolecular pharmacology2013

Brain-derived neurotrophic factor-mediated downregulation of brainstem K+-Cl- cotransporter and cell-type-specific GABA impairment for activation of descending pain facilitation.

Zhi Zhang, Xinxing Wang, Wei Wang, Yun-Gang Lu, Zhizhong Z Pan

Open access · bronzeAbstract read
In one paragraph

Article in Molecular pharmacology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Epigenetic Landscapes of Pain: DNA Methylation Dynamics in Chronic Pain.International journal of molecular sciences · 2024
    Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Descending Control Mechanisms and Chronic Pain.Current rheumatology reports · 2019
    Review
  15. Article
  16. Review
  17. Observational
  18. Article
  19. The Journal of biological chemistry · 2017
    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

5 authors at 2 institutions in 2 countries.

Zhi ZhangDepartment of Anesthesiology and Pain Medicine, University of Texas, MD Anderson Cancer Center, Houston, Texas (Z.Z., W.W., Z.Z.P.); Department of Neurobiology, University of Science and Technology of China, Hefei, People's Republic of China (Z.Z., X.W.); and Department of Integrative Biology and Pharmacology, University of Texas Health Science Center at Houston, Houston, Texas (Y.-G.L.).
Xinxing Wang
Wei Wang
Yun-Gang Lu
Zhizhong Z Pan
The University of Texas MD Anderson Cancer Center · USUniversity of Science and Technology of China · CN

Funding

Synaptic mechanisms for interactions of chronic pain and opioid addictionR01DA027541 · NIDA · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI PAN, ZHIZHONG Z. · 2009 to 2013
$1.7M
Delta-Opioid Receptor Trafficking and Pain InhibitionR01DA023069 · NIDA · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI PAN, ZHIZHONG Z. · 2008 to 2012
$1.5M
NIDA NIH HHS DA023069NIDA NIH HHS DA027541NIDA NIH HHS R01 DA023069NIDA NIH HHS R01 DA027541
6 · The paper itself

Abstract

Chronic pain is thought to be partly caused by a loss of GABAergic inhibition and resultant neuronal hyperactivation in the central pain-modulating system, but the underlying mechanisms for pain-modulating neurons in the brain are unclear. In this study, we investigated the cellular mechanisms for activation of brainstem descending pain facilitation in rats under persistent pain conditions. In the nucleus raphe magnus (NRM), a critical relay in the brain's descending pain-modulating system, persistent inflammatory pain induced by complete Freund's adjuvant decreased the protein level of K(+)-Cl(-) cotransporter (KCC2) in both total and synaptosomal preparations. Persistent pain also shifted the equilibrium potential of GABAergic inhibitory postsynaptic current (EIPSC) to a more positive level and increased the firing of evoked action potentials selectively in μ-opioid receptor (MOR)-expressing NRM neurons, but not in MOR-lacking NRM neurons. Microinjection of brain-derived neurotrophic factor (BDNF) into the NRM inhibited the KCC2 protein level in the NRM, and both BDNF administration and KCC2 inhibition by furosemide mimicked the pain-induced effects on EIPSC and excitability in MOR-expressing neurons. Furthermore, inhibiting BDNF signaling by NRM infusion of tyrosine receptor kinase B-IgG or blocking KCC2 with furosemide prevented these pain effects in MOR-expressing neurons. These findings demonstrate a cellular mechanism by which the hyperactivity of NRM MOR-expressing neurons, presumably responsible for descending pain facilitation, contributes to pain sensitization through the signaling cascade of BDNF-KCC2-GABA impairment in the development of chronic pain.

Indexed as

AnimalsAnimals, NewbornBrain-Derived Neurotrophic FactorBrain StemDown-Regulationgamma-Aminobutyric AcidK Cl- CotransportersMaleMicroinjectionsOrgan Culture TechniquesPainRaphe NucleiRatsRats, WistarSymportersBrain-Derived Neurotrophic Factorgamma-Aminobutyric AcidK Cl- CotransportersSymporters

Identifiers

PMID23847084
PMCPMC3781381
OpenAlexW2115199304

What OpenQuestion holds

Textmetadata
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.