Evidence map›Paper›PMID 20595020›Full record

ArticleHearing research2010

In vitro effects of recombinant otoconin 90 upon calcite crystal growth. Significance of tertiary structure.

Wenfu Lu, Dan Zhou, John J Freeman, Isolde Thalmann, David M Ornitz, Ruediger Thalmann

Abstract read
In one paragraph

Article in Hearing research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

12 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. NADPH Oxidase 3: Beyond the Inner Ear.Antioxidants (Basel, Switzerland) · 2024
    Review
  3. Article
  4. Review
  5. Functional cooperation between two otoconial proteins Oc90 and Nox3.Journal of vestibular research : equilibrium & orientation · 2021
    Article
  6. Mechanisms of otoconia and otolith development.Developmental dynamics : an official publication of the American Association of Anatomists · 2015
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. 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 1 country.

Wenfu LuDepartment of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St Louis, MO 63110, USA. luwenfu@gmail.com
Dan Zhou
John J Freeman
Isolde Thalmann
David M Ornitz
Ruediger Thalmann
Washington University in St. Louis · USUniversity of Missouri–St. Louis · US

Funding

Mechanisms regulating development of vestibular otoconiaR01DC002236 · NIDCD · WASHINGTON UNIVERSITY · PI ORNITZ, DAVID M · 1995 to 2010
$3.7M
INTERPLAY OF BIOLOGICAL AND PHYSICAL PROCESSES IN OTOCONIAL MORPHOGENESISR21DC009320 · NIDCD · WASHINGTON UNIVERSITY · PI THALMANN, RUEDIGER R · 2008 to 2009
$418k
NIDCD NIH HHS DC 009320NIDCD NIH HHS DC02236NIDCD NIH HHS R01 DC002236NIDCD NIH HHS R21 DC009320
6 · The paper itself

Abstract

Otoconia are biomineral particles of microscopic size essential for perception of gravity and maintenance of balance. Millions of older Americans are affected in their mobility, quality of life and in their health by progressive demineralization of otoconia. Currently, no effective means to prevent or counteract this process are available. Because of prohibitive anatomical and biological constraints, otoconial research is lagging far behind other systems such as bone and teeth. We have overcome these obstacles by generating otoconial matrix proteins by recombinant techniques. In the present study, we evaluated the effects of recombinant Otoconin 90 (OC90), the principal soluble matrix protein upon calcite crystal growth patterns in vitro. Our findings highlight multiple effects, including facilitation of nucleation, and inhibition of crystal growth in a concentration-dependent manner. Moreover, OC90 induces morphologic changes characteristic of native otoconia. OC90 is considerably less acidic than the prototypical invertebrate CaCO(3) -associated protein, but is nevertheless an effective modulator of calcite crystal growth. Based on homology modeling of the sPLA2-like domains of OC90, we propose that the lower density of acidic residues of the primary sequence is compensated by formation of major anionic surface clusters upon folding into tertiary conformation.

Indexed as

Amino Acid SequenceAnimalsCalcium-Binding ProteinsCalcium CarbonateCell LineCircular DichroismCrystallizationExtracellular Matrix ProteinsHumansKineticsLightMiceModels, MolecularMolecular Sequence DataOtolithic MembraneProtein FoldingCalcium-Binding ProteinsCalcium CarbonateExtracellular Matrix ProteinsOc90 protein, mouseRecombinant Proteins

Identifiers

PMID20595020
PMCPMC2923258
OpenAlexW2113678886

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.