Evidence map›Paper›PMID 34869340›Full record

ArticleFrontiers in cell and developmental biology2021

Effects of Calcitonin-Gene-Related-Peptide on Auditory Nerve Activity.

Colleen G Le Prell, Larry F Hughes, David F Dolan, Sanford C Bledsoe

Open access · goldAbstract read
In one paragraph

Article in Frontiers in cell and developmental biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Lateral olivocochlear neurons modulate cochlear responses to noise exposure.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Article
  6. Review
  7. Article
  8. The auditory efferent system in mosquitoes.Frontiers in cell and developmental biology · 2023
    Review
  9. 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

4 authors at 2 institutions in 1 country.

Colleen G Le PrellDepartment of Otolaryngology, University of Michigan, Ann Arbor, MI, United States.
Larry F HughesDepartment of Surgery, Southern Illinois University School of Medicine, Springfield, IL, United States.
David F DolanDepartment of Otolaryngology, University of Michigan, Ann Arbor, MI, United States.
Sanford C BledsoeDepartment of Otolaryngology, University of Michigan, Ann Arbor, MI, United States.
University of Michigan–Ann Arbor · USSouthern Illinois University School of Medicine · US

Funding

Functional role of CGRP as an efferent neurotransmitterR03DC007342 · NIDCD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LE PRELL, COLLEEN G · 2005 to 2007
$220k
NIDCD NIH HHS R03 DC007342
6 · The paper itself

Abstract

Calcitonin-gene-related peptide (CGRP) is a lateral olivocochlear (LOC) efferent neurotransmitter. Depression of sound-driven auditory brainstem response amplitude in CGRP-null mice suggests the potential for endogenous CGRP release to upregulate spontaneous and/or sound-driven auditory nerve (AN) activity. We chronically infused CGRP into the guinea pig cochlea and evaluated changes in AN activity as well as outer hair cell (OHC) function. The amplitude of both round window noise (a measure of ensemble spontaneous activity) and the synchronous whole-nerve response to sound (compound action potential, CAP) were enhanced. Lack of change in both onset adaptation and steady state amplitude of sound-evoked distortion product otoacoustic emission (DPOAE) responses indicated CGRP had no effect on OHCs, suggesting the origin of the observed changes was neural. Combined with results from the CGRP-null mice, these results appear to confirm that endogenous CGRP enhances auditory nerve activity when released by the LOC neurons. However, infusion of the CGRP receptor antagonist CGRP (8-37) did not reliably influence spontaneous or sound-driven AN activity, or OHC function, results that contrast with the decreased ABR amplitude measured in CGRP-null mice.

Indexed as

auditory brainstem responseauditory nerveCGRPcochlealateral olivocochlear efferent

Identifiers

PMID34869340
PMCPMC8633412
OpenAlexW3211949706

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.