Evidence map›Paper›PMID 24438367›Full record

ArticleMolecular pain2014

B-type natriuretic peptide is neither itch-specific nor functions upstream of the GRP-GRPR signaling pathway.

Xian-Yu Liu, Li Wan, Fu-Quan Huo, Devin M Barry, Hui Li, Zhong-Qiu Zhao, Zhou-Feng Chen

Open access · goldAbstract read
In one paragraph

Article in Molecular pain, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
13.9field-weighted citation impact, top 1% 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

45 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. A neuropeptide code for itch.Nature reviews. Neuroscience · 2021
    Review
  9. Review
  10. Review
  11. Article
  12. Pruritus in allergy and immunology.The Journal of allergy and clinical immunology · 2019
    Review
  13. Article
  14. Article
  15. Review
  16. Review
  17. Spinal Mechanisms of Itch Transmission.Neuroscience bulletin · 2018
    Review
  18. Review
  19. Article
  20. Review
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

7 authors at 1 institution in 1 country.

Xian-Yu Liu
Li Wan
Fu-Quan Huo
Devin M Barry
Hui Li
Zhong-Qiu Zhao
Zhou-Feng ChenCenter for the Study of Itch, Washington University School of Medicine Pain Center, St, Louis, MO 63110, USA. chenz@wustl.edu.
Washington University in St. Louis · US

Funding

MOLECULAR MECHANISMS OF THE ITCH SENSATION IN THE SPINAL CORDR01AR056318 · NIAMS · WASHINGTON UNIVERSITY · PI CHEN, ZHOUFENG · 2009 to 2018
$4.5M
NIAMS NIH HHS AR056318-01NIAMS NIH HHS R01 AR056318
6 · The paper itself

Abstract

backgroundA recent study by Mishra and Hoon identified B-type natriuretic peptide (BNP) as an important peptide for itch transmission and proposed that BNP activates spinal natriuretic peptide receptor-A (NPRA) expressing neurons, which release gastrin releasing peptide (GRP) to activate GRP receptor (GRPR) expressing neurons to relay itch information from the periphery to the brain (Science 340:968-971, 2013). A central premise for the validity of this novel pathway is the absence of GRP in the dorsal root ganglion (DRG) neurons. To this end, they showed that Grp mRNA in DRG neurons is either absent or barely detectable and claimed that BNP but not GRP is a major neurotransmitter for itch in pruriceptors. They showed that NPRA immunostaining is perfectly co-localized with Grp-eGFP in the spinal cord, and a few acute pain behaviors in Nppb-/- mice were tested. They claimed that BNP is an itch-selective peptide that acts as the first station of a dedicated neuronal pathway comprising a GRP-GRPR cascade for itch. However, our studies, along with the others, do not support their claims.

findingsWe were unable to reproduce the immunostaining of BNP and NPRA as shown by Mishra and Hoon. By contrast, we were able to detect Grp mRNA in DRGs using in situ hybridization and real time RT-PCR. We show that the expression pattern of Grp mRNA is comparable to that of GRP protein in DRGs. Pharmacological and genetic blockade of GRP-GRPR signaling does not significantly affect intrathecal BNP-induced scratching behavior. We show that BNP inhibits inflammatory pain and morphine analgesia.

conclusionsAccumulating evidence demonstrates that GRP is a key neurotransmitter in pruriceptors for mediating histamine-independent itch. BNP-NPRA signaling is involved in both itch and pain and does not function upstream of the GRP-GRPR dedicated neuronal pathway. The site of BNP action in itch and pain and its relationship with GRP remain to be clarified.

Indexed as

Signal TransductionAnimalsGanglia, SpinalGastrin-Releasing PeptideGene Expression RegulationInflammationMaleMiceMice, Inbred C57BLNatriuretic Peptide, BrainPainPruritusReceptors, Atrial Natriuretic FactorReceptors, BombesinRNA, MessengerSpinal Cordatrial natriuretic factor receptor AGastrin-Releasing PeptideNatriuretic Peptide, BrainReceptors, Atrial Natriuretic FactorReceptors, BombesinRNA, Messenger

Identifiers

PMID24438367
PMCPMC3930899
OpenAlexW2162047613

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.