Evidence map›Paper›PMID 29725615›Full record

ArticleScience advances2018

Nanostructure, osteopontin, and mechanical properties of calcitic avian eggshell.

Dimitra Athanasiadou, Wenge Jiang, Dina Goldbaum, Aroba Saleem, Kaustuv Basu, Michael S Pacella, Corinna F Böhm, Richard R Chromik, Maxwell T Hincke, Alejandro B Rodríguez-Navarro and 5 more

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
6.5field-weighted citation impact, top 2% 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

43 citing papers in PubMed, 127 citations in OpenAlex.

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  11. Bio-Informed Porous Mineral-Based Composites.Small (Weinheim an der Bergstrasse, Germany) · 2025
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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

15 authors at 5 institutions in 4 countries.

Dimitra AthanasiadouFaculty of Dentistry, McGill University, Montreal, Quebec H3A 0C7, Canada.ORCID 0000-0001-9367-1572
Wenge JiangFaculty of Dentistry, McGill University, Montreal, Quebec H3A 0C7, Canada.
Dina GoldbaumDepartment of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada.
Aroba SaleemDepartment of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada.
Kaustuv BasuFacility for Electron Microscopy Research, McGill University, Montreal, Quebec H3A 0C7, Canada.
Michael S PacellaDepartment of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.
Corinna F BöhmDepartment of Materials Science and Engineering, Institute of Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91058, Germany.ORCID 0000-0002-1281-8235
Richard R ChromikDepartment of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada.ORCID 0000-0003-4052-1858
Maxwell T HinckeDepartment of Cellular and Molecular Medicine and Department of Innovation in Medical Education, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada.ORCID 0000-0001-6134-5668
Alejandro B Rodríguez-NavarroDepartamento de Mineralogía y Petrología, Universidad de Granada, Granada 18002, Spain.ORCID 0000-0003-2674-7383
Hojatollah ValiFacility for Electron Microscopy Research, McGill University, Montreal, Quebec H3A 0C7, Canada.ORCID 0000-0003-3464-9943
Stephan E WolfDepartment of Materials Science and Engineering, Institute of Glass and Ceramics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91058, Germany.ORCID 0000-0002-3747-8097
Jeffrey J GrayDepartment of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.ORCID 0000-0001-6380-2324
Khanh Huy BuiDepartment of Anatomy and Cell Biology, McGill University, Montreal, Quebec H3A 0C7, Canada.ORCID 0000-0003-2814-9889
Marc D McKeeFaculty of Dentistry, McGill University, Montreal, Quebec H3A 0C7, Canada.ORCID 0000-0001-8349-965X
McGill University · CAFriedrich-Alexander-Universität Erlangen-Nürnberg · DEJohns Hopkins University · USUniversidad de Granada · ESUniversity of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Avian (and formerly dinosaur) eggshells form a hard, protective biomineralized chamber for embryonic growth-an evolutionary strategy that has existed for hundreds of millions of years. We show in the calcitic chicken eggshell how the mineral and organic phases organize hierarchically across different length scales and how variation in nanostructure across the shell thickness modifies its hardness, elastic modulus, and dissolution properties. We also show that the nanostructure changes during egg incubation, weakening the shell for chick hatching. Nanostructure and increased hardness were reproduced in synthetic calcite crystals grown in the presence of the prominent eggshell protein osteopontin. These results demonstrate the contribution of nanostructure to avian eggshell formation, mechanical properties, and dissolution.

Indexed as

Mechanical PhenomenaAnimalsCalcium CarbonateChickensEgg ShellNanostructuresOsteopontinX-Ray DiffractionCalcium CarbonateOsteopontin

Identifiers

PMID29725615
PMCPMC5930395
OpenAlexW2794774894

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.