Evidence map›Paper›PMID 32503640›Full record

ArticleJournal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale2020

Brain-derived nerve growth factor in the cochlea - a reproducibility study.

Brian W Blakley, Michael Seaman, Abdulrahman Alenezi

Open access · goldAbstract read
In one paragraph

Article in Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
0.2field-weighted citation impact, top 55% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Review
  6. Extracellular vesicles for developing targeted hearing loss therapy.Journal of controlled release : official journal of the Controlled Release Society · 2024
    Review
  7. Article
  8. Article
  9. Effect of Intracochlear Brain-Derived Neurotrophic Factor on Guinea Pig Sensorineural Hearing Loss.Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale
    Article
  10. 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

3 authors at 1 institution in 1 country.

Brian W BlakleyDepartment of Otolaryngology, University of Manitoba, Winnipeg, Manitoba, R3A 1R9, Canada. bblakley@exchange.hsc.mb.ca.ORCID http://orcid.org/0000-0002-3848-2346
Michael SeamanDepartment of Otolaryngology, University of Manitoba, Winnipeg, Manitoba, R3A 1R9, Canada.
Abdulrahman AleneziDepartment of Otolaryngology, University of Manitoba, Winnipeg, Manitoba, R3A 1R9, Canada.
University of Manitoba · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveBrain-derived nerve growth factor (BDNF) plays an important role in cochlear development so it is plausible that it could restore hearing loss if delivered directly into the cochlea. We wished to confirm our previous report that a single intracochlear injection of brain-derived nerve growth factor (BDNF) was beneficial for hearing in guinea pigs. We wished to assess the reproducibility of our results and assess possible improved methods with a view to developing a clinical treatment for sensorineural hearing loss.

methodsCDDP was used to create partial hearing loss in 25 guinea pigs. After 30 days the animals underwent ABR testing and unilateral BDNF injection through the round window in one ear and saline injection into the other ear. After allowing possible effects to stabilize, thirty days later, ABR threshold testing was repeated to assess change in threshold.

resultsFinal ABR thresholds were 60-70 dB and were about 11 dB better in the ears treated with BDNF.

conclusionOur original finding that Intracochlear BDNF can improve hearing in guinea pigs was confirmed, but the improvement demonstrated by the methods in this paper is too small for clinical application.

Indexed as

CochleaAnimalsBrain-Derived Neurotrophic FactorDisease Models, AnimalEvoked Potentials, Auditory, Brain StemGuinea PigsHearing LossInjectionsOrganoplatinum CompoundsReproducibility of Resultsbrain-derived growth factorBrain-Derived Neurotrophic FactorOrganoplatinum CompoundsAuditory brainstem responseBrain-derived nerve growth factorHearingOtotoxicity

Identifiers

PMID32503640
PMCPMC7275362
OpenAlexW3033601896

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.