Evidence map›Paper›PMID 23240046›Full record

ArticlePloS one2012

Depletion of resident macrophages does not alter sensory regeneration in the avian cochlea.

Mark E Warchol, Reto A Schwendener, Keiko Hirose

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.3field-weighted citation impact, top 24% 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

25 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Review
  6. Immune Response of Macrophage Population to Cochlear Implantation: Cochlea Immune Cells.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2020
    Article
  7. Article
  8. Article
  9. Article
  10. Density of Macrophages Immunostained With Anti-iba1 Antibody in the Vestibular Endorgans After Cochlear Implantation in the Human.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2019
    Article
  11. Purinergic Signaling and Cochlear Injury-Targeting the Immune System?International journal of molecular sciences · 2019
    Review
  12. Engraftment of Human Stem Cell-Derived Otic Progenitors in the Damaged Cochlea.Molecular therapy : the journal of the American Society of Gene Therapy · 2019
    Article
  13. Interactions between Macrophages and the Sensory Cells of the Inner Ear.Cold Spring Harbor perspectives in medicine · 2019
    Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Review
  20. 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 2 institutions in 2 countries.

Mark E WarcholDepartment of Otolaryngology, Washington University School of Medicine, St. Louis, Missouri, United States of America. warcholm@ent.wustl.edu
Reto A Schwendener
Keiko Hirose
Washington University in St. Louis · USUniversity of Zurich · CH

Funding

Sensory Function CoreP30DC004665 · NIDCD · WASHINGTON UNIVERSITY · PI FADDIS, BRIAN T · 2001 to 2015
$8.0M
MECHANISMS OF SENSORY REGENERATIONR01DC006283 · NIDCD · WASHINGTON UNIVERSITY · PI WARCHOL, MARK · 2004 to 2025
$6.8M
COCHLEAR MACROPHAGES AND EPITHELIAL REPAIRR01DC011315 · NIDCD · WASHINGTON UNIVERSITY · PI HIROSE, KEIKO · 2011 to 2020
$3.5M
NIDCD NIH HHS P30 DC004665NIDCD NIH HHS P30DC004665NIDCD NIH HHS R01 DC006283NIDCD NIH HHS R01DC006283NIDCD NIH HHS R01 DC011315NIDCD NIH HHS R01DC011315
6 · The paper itself

Abstract

Macrophages are the primary effector cells of the innate immune system and are also activated in response to tissue injury. The avian cochlea contains a population of resident macrophages, but the precise function of those cells is not known. The present study characterized the behavior of cochlear macrophages after aminoglycoside ototoxicity and also examined the possible role of macrophages in sensory regeneration. We found that the undamaged chick cochlea contains a large resting population of macrophages that reside in the hyaline cell region, immediately outside the abneural (inferior) border of the sensory epithelium. Following ototoxic injury, macrophages appear to migrate out of the hyaline cell region and towards the basilar membrane, congregating immediately below the lesioned sensory epithelium. In order to determine whether recruited macrophages contribute to the regeneration of sensory receptors, we quantified supporting cell proliferation and hair cell recovery after the elimination of most resident macrophages via application of liposomally-encapsulated clodronate. Examination of macrophage-depleted specimens at two days following ototoxic injury revealed no deficits in hair cell clearance, when compared to normal controls. In addition, we found that elimination of macrophages did not affect either regenerative proliferation of supporting cells or the production of replacement hair cells. However, we did find that macrophage-depleted cochleae contained reduced numbers of proliferative mesothelial cells below the basilar membrane. Our data suggest that macrophages are not required for normal debris clearance and regeneration, but that they may play a role in the maintenance of the basilar membrane.

Indexed as

Basilar MembraneCochleaHair Cells, AuditoryMacrophagesAminoglycosidesAnimalsChickensImmunity, InnateNerve RegenerationAminoglycosides

Identifiers

PMID23240046
PMCPMC3519890
OpenAlexW2153472997

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.