Evidence map›Paper›PMID 22243229›Full record

ArticleEuropean journal of oral sciences2011

The role of amelogenin during enamel-crystallite growth and organization in vivo.

J Tim Wright, Yong Li, Cynthia Suggs, Melissa A Kuehl, Ashok B Kulkarni, Carolyn W Gibson

Abstract read
In one paragraph

Article in European journal of oral sciences, 2011. 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
0.9field-weighted citation impact, top 27% 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, 25 citations in OpenAlex.

  1. Article
  2. Amelogenin Null Mice Develop Osteoarthritis, While Its Application Mitigates Disease Phenotypes in a Rat Model.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Amelogenin and Enamel Biomimetics.Journal of materials chemistry. B
    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 3 institutions in 1 country.

J Tim WrightDepartment of Pediatric Dentistry, School of Dentistry, University of North Carolina, Chapel Hill, NC 27599, USA. tim_wright@dentistry.unc.edu
Yong Li
Cynthia Suggs
Melissa A Kuehl
Ashok B Kulkarni
Carolyn W Gibson
University of Pennsylvania · USUniversity of North Carolina at Chapel Hill · USNational Institute of Dental and Craniofacial Research · US

Funding

ENAMEL MINERAL FORMATION DURING MURINE ODONTOGENESISR01DE011089 · NIDCR · UNIVERSITY OF PENNSYLVANIA · PI GIBSON, CAROLYN · 1995 to 2012
$3.9M
Molecular Roles of TGF-beta Signaling in Salivary Glands and Oral CancerZIADE000723 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI KULKARNI, ASHOK · 2009 to 2012
$2.4M
NIDCR NIH HHS DE011089NIDCR NIH HHS R01 DE011089
6 · The paper itself

Abstract

Amelogenin is critical for enamel formation, and human amelogenin gene (AMELX) mutations cause hypoplastic and/or hypomaturation enamel phenotypes. The Amelx null (AKO) mouse has a severe hypoplastic phenotype. This study evaluated the effect of amelogenin loss on enamel formation and crystallite morphology. Enamel from AKO and wild-type (WT) mice was used. The AKO mice were mated with transgenic mice expressing the most abundant known amelogenin isoform, TgM180-87, to rescue (KOM180-87) the enamel crystallite phenotype. Molar enamel was embedded, sectioned with a diamond microtome, and images were obtained by transmission electron microscopy. The crystallite sizes from multiple sections were measured using Image J. The mean thicknesses (WT = 26 nm, AKO = 16 nm, and KOM180-87 = 25 nm) and the mean widths (WT = 96 nm, AKO = 59 nm, KOM180-87 = 85 nm) of crystallites were measured. Despite a complete loss of amelogenin in AKO mice, a mineralized enamel layer with well-defined and organized crystallites is formed. In the absence of amelogenin, enamel crystallites were reduced in thickness and width. For the first time we show that introduction of the m180 amelogenin isoform into the AKO mouse through cross-breeding rescues the crystallite phenotype. We conclude that amelogenin is essential for the development of normal crystallite size.

Indexed as

AmelogenesisAmelogeninAnimalsCrystallizationDental EnamelDental Enamel HypoplasiaFemaleMaleMiceMice, KnockoutMutationProtein IsoformsX ChromosomeAmelogeninAmelx protein, mouseProtein Isoforms

Identifiers

PMID22243229
PMCPMC3293103
OpenAlexW1932857012

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.