Evidence map›Paper›PMID 22535263›Full record

ArticleStroke2012

Delayed administration of a small molecule tropomyosin-related kinase B ligand promotes recovery after hypoxic-ischemic stroke.

Jullet Han, Julia Pollak, Tao Yang, Mohammad R Siddiqui, Kristian P Doyle, Kereshmeh Taravosh-Lahn, Egle Cekanaviciute, Alex Han, Jeremy Z Goodman, Britta Jones and 4 more

Open access · bronzeAbstract read
In one paragraph

Article in Stroke, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

36 citing papers in PubMed, 68 citations in OpenAlex.

  1. Trial
  2. Review
  3. Small-Molecule Trk Agonists: Where Do We Go from Here?Journal of medicinal chemistry · 2025
    Review
  4. Article
  5. Review
  6. Article
  7. Chronic partial TrkB activation reduces seizures and mortality in a mouse model of Dravet syndrome.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  8. Review
  9. Article
  10. Review
  11. Post-stroke remodeling processes in animal models and humans.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. Hydrogel-delivered brain-derived neurotrophic factor promotes tissue repair and recovery after stroke.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    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

14 authors at 1 institution in 1 country.

Jullet HanDepartment of Neurology and Neurological Sciences, Stanford University School of Medicine, 1201 Welch Road, MSLS Building, P209, Stanford, CA 94305-5489, USA.
Julia Pollak
Tao Yang
Mohammad R Siddiqui
Kristian P Doyle
Kereshmeh Taravosh-Lahn
Egle Cekanaviciute
Alex Han
Jeremy Z Goodman
Britta Jones
Deqiang Jing
Stephen M Massa
Frank M Longo
Marion S Buckwalter
Cornell University · US

Funding

TGFbeta signaling, reactive astrogliosis and function after strokeR01NS067132 · NINDS · STANFORD UNIVERSITY · PI BUCKWALTER, MARION S · 2011 to 2015
$1.9M
The Mechanism of TGF Beta-1 in Adult NeurogenesisK08NS050304 · NINDS · STANFORD UNIVERSITY · PI BUCKWALTER, MARION S · 2006 to 2010
$886k
NINDS NIH HHS K08 NS050304NINDS NIH HHS R01 NS067132
6 · The paper itself

Abstract

background and purposeStroke is the leading cause of long-term disability in the United States, yet no drugs are available that are proven to improve recovery. Brain-derived neurotrophic factor stimulates neurogenesis and plasticity, processes that are implicated in stroke recovery. It binds to both the tropomyosin-related kinase B and p75 neurotrophin receptors. However, brain-derived neurotrophic factor is not a feasible therapeutic agent, and no small molecule exists that can reproduce its binding to both receptors. We tested the hypothesis that a small molecule (LM22A-4) that selectively targets tropomyosin-related kinase B would promote neurogenesis and functional recovery after stroke.

methodsFour-month-old mice were trained on motor tasks before stroke. After stroke, functional test results were used to randomize mice into 2 equally, and severely, impaired groups. Beginning 3 days after stroke, mice received LM22A-4 or saline vehicle daily for 10 weeks.

resultsLM22A-4 treatment significantly improved limb swing speed and accelerated the return to normal gait accuracy after stroke. LM22A-4 treatment also doubled both the number of new mature neurons and immature neurons adjacent to the stroke. Drug-induced differences were not observed in angiogenesis, dendritic arborization, axonal sprouting, glial scar formation, or neuroinflammation.

conclusionsA small molecule agonist of tropomyosin-related kinase B improves functional recovery from stroke and increases neurogenesis when administered beginning 3 days after stroke. These findings provide proof-of-concept that targeting of tropomyosin-related kinase B alone is capable of promoting one or more mechanisms relevant to stroke recovery. LM22A-4 or its derivatives might therefore serve as "pro-recovery" therapeutic agents for stroke.

Indexed as

AnimalsHypoxia-Ischemia, BrainLigandsMaleMembrane GlycoproteinsMiceMice, Inbred C57BLNeurogenesisProtein-Tyrosine KinasesRandom AllocationReceptor, trkBRecovery of FunctionStrokeTropomyosinLigandsMembrane GlycoproteinsNtrk2 protein, mouseProtein-Tyrosine KinasesReceptor, trkBTropomyosin

Identifiers

PMID22535263
PMCPMC3383889
OpenAlexW1991255658

What OpenQuestion holds

Textmetadata
LicenceTDM
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.