Evidence map›Paper›PMID 30839307›Full record

ArticleJournal of musculoskeletal & neuronal interactions2019

The selective TrkA agonist, gambogic amide, promotes osteoblastic differentiation and improves fracture healing in mice.

Maddison R Johnstone, Rhys D Brady, Johannes A Schuijers, Jarrod E Church, David Orr, Julian M W Quinn, Stuart J McDonald, Brian L Grills

Abstract read
In one paragraph

Article in Journal of musculoskeletal & neuronal interactions, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.2field-weighted citation impact, top 25% 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

14 citing papers in PubMed, 19 citations in OpenAlex.

  1. Boosting Sensory Nerve-to-Bone Interactions Enhances Hedgehog Mediated Calvarial Bone Repair.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  2. Review
  3. Neuronal regulation of bone and tendon injury repair: a focused review.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2024
    Review
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. The TrkB agonist, 7,8-dihydroxyflavone, impairs fracture healing in mice.Journal of musculoskeletal & neuronal interactions · 2021
    Article
  11. Article
  12. Article
  13. Article
  14. 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

8 authors at 2 institutions in 1 country.

Maddison R JohnstoneDepartment of Physiology, Anatomy and Microbiology, School of Life Sciences, La Trobe University, Melbourne, Australia.
Rhys D Brady
Johannes A Schuijers
Jarrod E Church
David Orr
Julian M W Quinn
Stuart J McDonald
Brian L Grills
La Trobe University · AUGarvan Institute of Medical Research · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo study effects of the selective TrkA agonist, gambogic amide (GA), on fracture healing in mice and on an osteoprogenitor cell line in vitro.

methodsMice were given bilateral fibular fractures and treated for two weeks with vehicle or 1 mg/kg/day GA and euthanized at 14-, 21-, and 42-days post-fracture. Calluses were analysed by micro-computed tomography (µCT), three-point bending and histology. For RT-PCR analyses, Kusa O cells were treated with 0.5nM of GA or vehicle for 3, 7, and 14 days, while for mineralization assessment, cells were treated for 21 days.

resultsµCT analysis found that 21-day GA-treated calluses had both decreased tissue volume (p<0.05) and bone surface (p<0.05) and increased fractional bone volume (p<0.05) compared to controls. Biomechanical analyses of 42-day calluses revealed that GA treatment increased stiffness per unit area by 53% (p<0.01) and load per unit area by 52% (p<0.01). GA treatment increased Kusa O gene expression of alkaline phosphatase and osteocalcin (p<0.05) by 14 days as well as mineralization at 21 days (p<0.05).

conclusionsGA treatment appeared to have a beneficial effect on fracture healing at 21- and 42-days post-fracture. The exact mechanism is not yet understood but may involve increased osteoblastic differentiation and matrix mineralization.

Indexed as

AnimalsCalcification, PhysiologicCell DifferentiationFracture HealingMaleMiceMice, Inbred C57BLOsteoblastsReceptor, trkAXanthonesgambogic amideReceptor, trkAXanthones

Identifiers

PMID30839307
PMCPMC6454248
OpenAlexW2966518325

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.