Mechanism of incorporation of zinc into hydroxyapatite

Acta Biomaterialia
Katsuyuki MatsunagaAtsushi Nakahira

Abstract

The atomic level mechanism of incorporation of Zn(2+) into hydroxyapatite (HAp), which is a potential dopant to promote bone formation, was investigated, based on first principles total energy calculations and experimental X-ray absorption near edge structure (XANES) analyses. It was found that Zn(2+)-doped HAp tends to have a Ca-deficient chemical composition and substitutional Zn(2+) ions are associated with a defect complex with a Ca(2+) vacancy and two charge compensating protons. Moreover, first principles calculations demonstrated that Zn(2+) incorporation into HAp can take place by occupying the Ca(2+) vacancy of the defect complex. The Ca(2+) vacancy complex is not only the origin of the calcium deficiency in HAp, but also plays a key role in the uptake of trace elements during mineralization.

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Citations

May 28, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Guangfei SunShengmin Zhang
Dec 11, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Omer KaygiliA Birkan Selçuk
Dec 22, 2011·Acta Biomaterialia·Sandrine GomesGuillaume Renaudin
Aug 2, 2011·Micron : the International Research and Review Journal for Microscopy·Teruyasu MizoguchiYuichi Ikuhara
Jun 26, 2010·Micron : the International Research and Review Journal for Microscopy·Teruyasu MizoguchiIsao Tanaka
Jun 5, 2015·Journal of the Royal Society, Interface·Robert J FriederichsSerena M Best
Jun 10, 2014·Acta Biomaterialia·S R StockZ Cai
Nov 12, 2016·Acta Biomaterialia·S R StockJ S Okasinski
Jan 26, 2017·Research in Veterinary Science·Howa BegamBiswanath Kundu
Jul 21, 2015·Physical Chemistry Chemical Physics : PCCP·Marat GafurovSergei Orlinskii
Oct 11, 2017·Microscopy·Hidekazu Ikeno, Teruyasu Mizoguchi
Apr 23, 2013·Journal of Materials Science. Materials in Medicine·Rodrigo F B ResendeMônica D Calasans-Maia
Jan 30, 2020·Microscopy·Teruyasu Mizoguchi, Shin Kiyohara
Jun 4, 2020·Journal of the Royal Society, Interface·Helen F ChappellJonathan J Powell
Jun 14, 2020·Journal of Biomedical Materials Research. Part B, Applied Biomaterials· Chetan, Uthirapathy Vijayalakshmi
Sep 15, 2019·Journal of Hazardous Materials·Maya IbrahimJean-François Lamonier
Dec 16, 2020·ACS Biomaterials Science & Engineering·Vianni ChopraDeepa Ghosh

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