نتایج جستجو برای: hydroxyapatite

تعداد نتایج: 10301  

2013
J. BEUVELOT Y. MAURAS G. MABILLEAU H. MARCHAND DANIEL CHAPPARD

Poly (2-hydroxy ethyl) methacrylate (PHEMA) is a polymer that can be carboxymethylated to induce calcification on its surface. This mimics the calcification of bone matrix since the polymer surface induces the deposit of large hydroxyapatite calcospherites. We investigated the effect of Sr on hydroxyapatite crystals developed on PHEMA pellets. Pellets were incubated for 1 week in a synthetic bo...

Journal: :The British journal of ophthalmology 2002
A J Suter A C B Molteno T H Bevin J D Fulton P Herbison

AIMS To document the long term experience of bone derived hydroxyapatite orbital implants and compare results using scleral wrapped implants with those not using sclera. METHODS This retrospective case series reviewed the long term follow up of 118 patients with 120 eyes which had undergone enucleation and bone derived hydroxyapatite orbital implant insertion at Dunedin Hospital from 1977 unt...

Journal: :Atherosclerosis 2012
Jae Sam Lee Joel D Morrisett Ching-Hsuan Tung

OBJECTIVE The objective of this study is to develop a method for selective detection of the calcific (hydroxyapatite) component in human aortic smooth muscle cells in vitro and in calcified cardiovascular tissues ex vivo. This method uses a novel optical molecular imaging contrast dye, Cy-HABP-19, to target calcified cells and tissues. METHODS A peptide that mimics the binding affinity of ost...

Journal: :The Journal of clinical investigation 1991
S M Qiu G Wen N Hirakawa R D Soloway N K Hong R S Crowther

Calcium hydroxyapatite can be a significant component of black pigment gallstones. Diverse molecules that bind calcium phosphate inhibit hydroxyapatite precipitation. Because glycine-conjugated bile acids, but not their taurine counterparts, bind calcium phosphate, we studied whether glycochenodeoxycholic acid inhibits calcium hydroxyapatite formation. Glycochenodeoxycholic acid (2 mM) totally ...

Journal: :The Journal of biological chemistry 2000
M Gilbert W J Shaw J R Long K Nelson G P Drobny C M Giachelli P S Stayton

Extracellular matrix proteins play key roles in controlling the activities of osteoblasts and osteoclasts in bone remodeling. These bone-specific extracellular matrix proteins contain amino acid sequences that mediate cell adhesion, and many of the bone-specific matrix proteins also contain acidic domains that interact with the mineral surface and may orient the signaling domains. Here we repor...

Journal: :Chemical communications 2011
Liang Wu Yuandong Dou Kaili Lin Wanyin Zhai Wenguo Cui Jiang Chang

Nanocrystalline hydroxyapatite assembled hollow fibers (NHAHF) in the membrane form were fabricated by combining the electrospinning technique and the hydrothermal method. This novel hierarchical tubular structure of hydroxyapatite exhibited excellent protein loading capacity and long-term sustained release property.

Journal: :Coatings 2023

Hydroxyapatite coatings were deposited for 1, 2, and 3 h on NiTi substrates using plasma-assisted radio frequency sputtering. The matrix consisted of B2 B19’ phases Ti2Ni, Ni3Ti, Ni4Ti3 intermetallic compounds. surface coating was monoclinic hydroxyapatite. Increasing the deposition time to made it possible form a dense hydroxyapatite layer without visible defects. phase contrast maps showed th...

2002
A J Suter

Aims: To document the long term experience of bone derived hydroxyapatite orbital implants and compare results using scleral wrapped implants with those not using sclera. Methods: This retrospective case series reviewed the long term follow up of 118 patients with 120 eyes which had undergone enucleation and bone derived hydroxyapatite orbital implant insertion at Dunedin Hospital from 1977 unt...

Journal: :Journal of biomedical materials research. Part A 2007
Noam Eliaz Moshe Eliyahu

Recently, interest in electrochemical formation of hydroxyapatite has evolved. In this work, highly crystalline hydroxyapatite is electrodeposited on pure titanium and Ti-6Al-4V alloy. In situ and ex situ imaging, coupled with potentiostatic and potentiodynamic measurements, is conducted by means of electrochemical atomic force microscopy. This allows for a study of the nucleation and growth of...

Journal: :Journal of dental research 1979
P L Fan W J O'Brien M C Walker

The Unit csity of VMiclhigan ,School of Dentistry, Anne Arbor, Michigan 48109 J Dent Res 58(6):1566-1569, June 1979 Synithetic bytdroxyapatite is often used for simulationi studies of adsorption of Streptoc occus min tans andic other oral bacteria. F ffects of chIemical treatniienitS of l ydro xvapatites on the adsorption of S. mutanis iasve been reported (O'Brien ct al., J Dent Rse Sept 1978; ...

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