Evidence map›Paper›PMID 30548608›Full record

ArticleThe Laryngoscope2019

Motor endplate-expressing cartilage-muscle implants for reconstruction of a denervated hemilarynx.

Sarah Brookes, Sherry Voytik-Harbin, Hongji Zhang, Lujuan Zhang, Stacey Halum

Open access · greenAbstract read
In one paragraph

Article in The Laryngoscope, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.1field-weighted citation impact, top 20% 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

13 citing papers in PubMed, 17 citations in OpenAlex.

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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 2 institutions in 1 country.

Sarah BrookesDepartment of Basic Medical Sciences, West Lafayette, Indiana, U.S.A.ORCID 0000-0003-1990-7254
Sherry Voytik-HarbinDepartment of Basic Medical Sciences, West Lafayette, Indiana, U.S.A.
Hongji ZhangDepartment of Speech, Language and Hearing Sciences, West Lafayette, Indiana, U.S.A.
Lujuan ZhangDepartment of Speech, Language and Hearing Sciences, West Lafayette, Indiana, U.S.A.
Stacey HalumDepartment of Speech, Language and Hearing Sciences, West Lafayette, Indiana, U.S.A.ORCID 0000-0002-7079-4403
Purdue University West Lafayette · USBioanalytical Systems (United States) · US

Funding

Muscle progenitor cell-based implants for dynamic laryngeal muscle reconstructionR01DC014070 · NIDCD · PURDUE UNIVERSITY · PI HALUM, STACEY L. · 2015 to 2024
$4.9M
Neurotrophin-Secreting Muscle Stem Cell Therapy for Laryngeal ParalysisK08DC009583 · NIDCD · PURDUE UNIVERSITY · PI HALUM, STACEY L. · 2010 to 2014
$1.2M
NIDCD NIH HHS R01 DC014070
6 · The paper itself

Abstract

objectiveTissue engineering of the larynx requires a complex, multiple tissue layer design. Additionally, spontaneous reinnervation of the larynx after recurrent laryngeal nerve (RLN) injury is often disorganized, resulting in subpar function. This study investigates use of tissue-engineered cartilage and motor endplate-expressing (MEE) tissue-engineered skeletal muscle implants for laryngeal reconstruction and the promotion of organized reinnervation after RLN injury.

methodsF344 rat primary muscle progenitor cells (MPCs) were isolated. Three-dimensional muscle constructs were created by encapsulating MPCs in type I oligomeric collagen under passive tension. Constructs were then cultured in differentiation medium (MPC control constructs) or induced to form motor endplates (MEE constructs) with neurotrophic agents. Three-dimensional cartilage constructs were created with adipose stem cells differentiated in chondrocyte medium. The muscle and cartilage constructs were implanted into surgically created myochondral defects in the F344 rat larynx with injured or intact (control) RLN. At 1-, 3-, and 6-month timepoints, videolaryngoscopy, electromyography (EMG), histology, and immunohistochemistry were used to assess outcomes.

resultsAt all timepoints, cartilage-muscle implants were well integrated into host tissue. Functionally, there was increased vocal fold adduction and EMG activity in nerve-injured rats treated with the MEE constructs when compared to those treated with the MPC control constructs. Motor endplate-expressing constructs had increased myofiber cross-sectional area compared to MPC control constructs.

conclusionAlthough our laboratory previously demonstrated that muscle and cartilage constructs could be used separately for hemilaryngeal reconstruction, this study suggests combining them with the modification of MEEs rather than MPCs, resulting in improved muscle recovery after recurrent laryngeal nerve injury. LEVEL OF EVIDENCE: NA Laryngoscope, 129:1293-1300, 2019.

Indexed as

Nerve RegenerationAnimalsCartilageDisease Models, AnimalElectromyographyLaryngeal MusclesLaryngoplastyMaleMotor EndplateMuscle, SkeletalPhonationRatsRats, Inbred F344Recurrent Laryngeal NerveRecurrent Laryngeal Nerve InjuriesTissue Engineeringlaryngeal reconstructionMuscle progenitor cellsrecurrent laryngeal nerve injurytissue-engineered cartilagetissue-engineered skeletal muscletype I oligomeric collagen

Identifiers

PMID30548608
PMCPMC8171591
OpenAlexW2904793466

What OpenQuestion holds

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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.