Evidence map›Paper›PMID 31949595›Full record

ArticleInternational journal of clinical and experimental pathology2018

The mechanism of quercetin in regulating osteoclast activation and the PAR2/TRPV1 signaling pathway in the treatment of bone cancer pain.

Zhengwei Li, Jun Zhang, Xiansheng Ren, Qinyi Liu, Xiaoyu Yang

Open access · greenAbstract read
In one paragraph

Article in International journal of clinical and experimental pathology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 22% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Review
  6. Article
  7. Review
  8. Role of TRP Channels in Cancer-Induced Bone Pain.International journal of molecular sciences · 2025
    Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Total Flavonoids Isolated from the Leaves ofCurrent pharmaceutical design · 2024
    Article
  16. Review
  17. Review
  18. TRPV1 in dorsal root ganglion contributed to bone cancer pain.Frontiers in pain research (Lausanne, Switzerland) · 2022
    Review
  19. Review
  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

5 authors at 1 institution in 1 country.

Zhengwei LiDepartment of Orthopedics, The Second Hospital of Jilin University Changchun, Jilin, China.
Jun ZhangDepartment of Orthopedics, The Second Hospital of Jilin University Changchun, Jilin, China.
Xiansheng RenDepartment of Orthopedics, The Second Hospital of Jilin University Changchun, Jilin, China.
Qinyi LiuDepartment of Orthopedics, The Second Hospital of Jilin University Changchun, Jilin, China.
Xiaoyu YangDepartment of Orthopedics, The Second Hospital of Jilin University Changchun, Jilin, China.
Second Affiliated Hospital of Jilin University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe present paper aimed to investigate the therapeutic effect of quercetin in a rat model of bone cancer pain, and to further explore the molecular mechanism of quercetin in the treatment of bone cancer pain.

methodsThe activation status of the osteoblasts in each group of rats was detected by anti-tartaric acid phosphatase (TRAP) immunohistochemistry, while the activation status of the osteoclasts was detected by alkaline phosphatase (BAP) immunohistochemistry. An ELISA assay was used to detect the levels of serum type I collagen carboxy-terminal pro-peptide (CDC), tartrate-resistant acid phosphatase (TRAP5b), and osteocalcin in each group, as well as the expressions of the main inflammatory mediator membrane protease (trypsin), TNF-α, and IL-1β in the PAR2/TRPV1 pathway in serum. Taking CD68 as a marker, immunohistochemistry was used to detect the positive proportion of macrophages in the left tibia of each group. Western blot was applied to analyze the expressions of the RANKL, OPG, RANK, PTHrP and IGF-1 proteins in rat bone tissue, the inflammatory mediators IL-8, M-CSF and TNF-α, and the PAR2/TRPV1 pathway-related molecules PAR2, TRPV1, PKC-Y and PKA in rat DRG neurons, as well as the neurotransmitters c-Fos, GFAP, PKR, and CGRP in the spinal cord.

resultsQuercetin significantly reduces serum CTX, TRAP and osteocalcin expressions in a rat model of bone cancer pain and also significantly reduces the proportion of TRAP-positive cells. The drug can significantly reduce the positive proportion of local bone tissue macrophages in rats with bone cancer pain. It can significantly decrease the expressions of RANKL, RANK, PTHrP and IGF-1 proteins and the inflammatory mediators such as IL-8, M-CSF and TNF-α, significantly increase the expressions of OPG and further significantly inhibit the expressions of the PAR2/TRPV1 pathway-related molecules PAR2, TRPV1, PKC-γ and PKA in DRG neurons, as well as significantly reduce the levels of major inflammatory mediators (trypsin), TNF-α, and IL-1β in the PAR2/TRPV1 pathway.

conclusionQuercetin can inhibit osteoclast activation and reduce bone destruction in the bone cancer pain model by regulating the RANKL/RANK/OPG signaling pathway and the inflammatory response. It can inhibit peripheral sensitization and central sensitization in bone cancer pain by regulating the PAR2/TRPV1 signaling pathway.

Indexed as

Bone cancer painPAR2/TRPV1 signaling pathwayquercetinRANKL/RANK/OPG signaling pathway

Identifiers

PMID31949595
PMCPMC6963045
OpenAlexW3010863040

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.