Evidence map›Paper›PMID 31711791›Full record

ArticleBrazilian journal of otorhinolaryngology

Regenerative potential of basic fibroblast growth factor contained in biodegradable gelatin hydrogel microspheres applied following vocal fold injury: Early effect on tissue repair in a rabbit model.

Mitsuyoshi Imaizumi, Ryosuke Nakamura, Yuta Nakaegawa, Bayu Tirta Dirja, Yasuhiro Tada, Akiko Tani, Takashi Sugino, Yasuhiko Tabata, Koichi Omori

Open access · goldAbstract read
In one paragraph

Article in Brazilian journal of otorhinolaryngology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.4field-weighted citation impact, top 35% 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

8 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Article
  3. Preclinical Vocal Fold and Airway Injury Models: A Scoping Review.Laryngoscope investigative otolaryngology · 2025
    Review
  4. Article
  5. Review
  6. Review
  7. Anti-fibrotic effects of pharmacologic FGF-2: a review of recent literature.Journal of molecular medicine (Berlin, Germany) · 2022
    Review
  8. 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

9 authors at 3 institutions in 1 country.

Mitsuyoshi ImaizumiFukushima Medical University, School of Medicine, Department of Otolaryngology, Fukushima, Japan. Electronic address: ima-mitu@fmu.ac.jp.
Ryosuke NakamuraKyoto University, Department of Otolaryngology, Kyoto, Japan.
Yuta NakaegawaFukushima Medical University, School of Medicine, Department of Otolaryngology, Fukushima, Japan.
Bayu Tirta DirjaFukushima Medical University, School of Medicine, Department of Otolaryngology, Fukushima, Japan.
Yasuhiro TadaFukushima Medical University, School of Medicine, Department of Otolaryngology, Fukushima, Japan.
Akiko TaniFukushima Medical University, School of Medicine, Department of Otolaryngology, Fukushima, Japan.
Takashi SuginoShizuoka Cancer Center, Division of Pathology, Shizuoka, Japan.
Yasuhiko TabataKyoto University, Institute for Frontier Life and Medical Sciences, Department of Regeneration Science and Engineering, Laboratory of Biomaterials, Kyoto, Japan.
Koichi OmoriKyoto University, Department of Otolaryngology, Kyoto, Japan.
Fukushima Medical University · JPKyoto University · JPShizuoka Cancer Center · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPostoperative dysphonia is mostly caused by vocal fold scarring, and careful management of vocal fold surgery has been reported to reduce the risk of scar formation. However, depending on the vocal fold injury, treatment of postoperative dysphonia can be challenging.

objectiveThe goal of the current study was to develop a novel prophylactic regenerative approach for the treatment of injured vocal folds after surgery, using biodegradable gelatin hydrogel microspheres as a drug delivery system for basic fibroblast growth factor.

methodsVideoendoscopic laryngeal surgery was performed to create vocal fold injury in 14 rabbits. Immediately following this procedure, biodegradable gelatin hydrogel microspheres with basic fibroblast growth factor were injected in the vocal fold. Two weeks after injection, larynges were excised for evaluation of vocal fold histology and mucosal movement.

resultsThe presence of poor vibratory function was confirmed in the injured vocal folds. Histology and digital image analysis demonstrated that the injured vocal folds injected with gelatin hydrogel microspheres with basic fibroblast growth factor showed less scar formation, compared to the injured vocal folds injected with gelatin hydrogel microspheres only, or those without any injection.

conclusionA prophylactic injection of basic fibroblast growth factor -containing biodegradable gelatin hydrogel microspheres demonstrates a regenerative potential for injured vocal folds in a rabbit model.

Indexed as

GelatinVocal CordsAnimalsFibroblast Growth Factor 2HydrogelsMicrospheresRabbitsFibroblast Growth Factor 2GelatinHydrogelsBasic fibroblast growth factor (bFGF, FGF-2)Biodegradable gelatin hydrogel microspheresVocal fold injury

Identifiers

PMID31711791
PMCPMC9422641
OpenAlexW2980675513

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.