Evidence map›Paper›PMID 22960466›Full record

ArticleHearing research2012

Differential actions of isoflurane and ketamine-based anaesthetics on cochlear function in the mouse.

Jennie M E Cederholm, Kristina E Froud, Ann C Y Wong, Myungseo Ko, Allen F Ryan, Gary D Housley

Open access · greenAbstract readComparative Study
In one paragraph

Article in Hearing research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
1.9field-weighted citation impact, top 16% 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

40 citing papers in PubMed, 64 citations in OpenAlex.

  1. Article
  2. Article
  3. Spontaneous CaExperimental physiology · 2026
    Article
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  6. Article
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  11. A Role for KCNQ Channels on Cell Type-Specific Plasticity in Mouse Auditory Cortex after Peripheral Damage.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  12. Article
  13. Article
  14. Mitigation of Hearing Damage After Repeated Blast Exposures in Animal Model of Chinchilla.Journal of the Association for Research in Otolaryngology : JARO · 2022
    Article
  15. Article
  16. Article
  17. Article
  18. Article
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  20. Optimizing Auditory Brainstem Response Acquisition Using Interleaved Frequencies.Journal of the Association for Research in Otolaryngology : JARO · 2020
    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

6 authors at 2 institutions in 2 countries.

Jennie M E CederholmTranslational Neuroscience Facility, School of Medical Sciences, The University of New South Wales, UNSW Kensington Campus, Sydney, NSW Australia.
Kristina E Froud
Ann C Y Wong
Myungseo Ko
Allen F Ryan
Gary D Housley
UNSW Sydney · AUUniversity of California, San Diego · US

Funding

Middle ear responses in Otitis MediaR01DC000129 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI RYAN, ALLEN F. · 1989 to 2021
$6.8M
Basic Mechanisms on Hearing Loss of Cochlear OriginI01BX001205 · VA · VA SAN DIEGO HEALTHCARE SYSTEM · PI RYAN, ALLEN F. · 2013 to 2024
–
BLRD VA I01 BX001205NIDCD NIH HHS R01 DC000129
6 · The paper itself

Abstract

Isoflurane is a volatile inhaled anaesthetic widely used in animal research, with particular utility for hearing research. Isoflurane has been shown to blunt hearing sensitivity compared with the awake state, but little is known about how isoflurane compares with other anaesthetics with regard to hair cell transduction and auditory neurotransmission. The current study was undertaken in C57Bl/6J and C129/SvEv strains of mice to determine whether isoflurane anaesthesia affects hearing function relative to ketamine-based anaesthesia. Cochlear function and central auditory transmission were assessed using auditory brainstem response (ABR) and distortion product otoacoustic emission (DPOAE), comparing thresholds and input/output functions over time, for isoflurane vs. ketamine/xylazine/acepromazine anaesthesia. ABR thresholds at the most sensitive region of hearing (16 kHz) were initially higher under isoflurane anaesthesia. This reduced hearing sensitivity worsened over the 1 h study period, and also became evident with broadband click stimulus. Ketamine anaesthesia provided stable ABR thresholds. Although the growth functions were unchanged over time for both anaesthetics, the slopes under isoflurane anaesthesia were significantly less. Cubic (2f(1)-f(2)) DPOAE thresholds and growth functions were initially similar for both anaesthetics. After 60 min, DPOAE thresholds increased for both groups, but this effect was significantly greater with ketamine anaesthesia. The isoflurane-mediated increase in ABR thresholds over time is attributable to action on cochlear nerve activation, evident as a right-shift in the P1-N1 input/output function compared to K/X/A. The ketamine-based anaesthetic produced stable ABR thresholds and gain over time, despite a right-shift in the outer hair cell - mediated DPOAE input/output function.

Indexed as

Acoustic StimulationAnesthetics, DissociativeAnesthetics, InhalationAnimalsAuditory ThresholdCochleaCochlear NerveEvoked Potentials, Auditory, Brain StemIsofluraneKetamineMiceMice, 129 StrainMice, Inbred C57BLOtoacoustic Emissions, SpontaneousReaction TimeTime FactorsAnesthetics, DissociativeAnesthetics, InhalationIsofluraneKetamine

Identifiers

PMID22960466
PMCPMC3582347
OpenAlexW2082368133

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.