In this paper, uniform hydroxyapatite (HA) nanowires of width 60 nm and length 1 μm are synthesized by solvothermal synthesis. The formation process of the nanowires has been elaborated from the structure within the reverse micelles by the time-resolved fluorescence quenching technique. The results reveal that the formation of amorphous nuclear/surfactant complex and the electrostatic field wit...

A review of classes of biomaterials and their applications is presented. Particular interest is paid to bioceramics, calcium phosphates and hydroxyapatite which are the leading biomaterials employed today. Several methods for producing hydroxyapatite are presented, including the characteristics and disadvantages of each methodology reported in specialized literature. The main trends of the mode...

The efficacy of locally implanted antibiotic-calcium hydroxyapatite ceramic composites was investigated for the treatment of experimentally produced, implantrelated osteomyelitis in rats. High concentrations of antibiotics were detected at the site of infection and bacteria were eradicated without removal of the metal implants. Parenteral antibiotics and surgical debridement, alone or in combin...

This paper explores the structure, composition, and mechanical properties of porcupine fish spines for the first time. The spine was found to be composed of nanocrystalline hydroxyapatite, protein (collagen), and water using X-ray diffraction, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis. Microstructures have mineralized fibrillar sheets in the longitudinal direction and...

Most techniques of cranioplasty are expensive and require advance preparation if a custom-moulded prosthesis is to be used. Technical problems with cranioplasties using synthetic materials include sinking, elevation and rotation, while those with hydroxyapatite or bone graft cranioplasties include resorption and harvest site disfigurement. We report our technique of in situ cranioplasty using m...

2 and Osteoblastic Interactions with the Topographically Distinct 3 Poly(ε-caprolactone)/Hydroxyapatite Thin Films 4 Vuk Uskokovic*́,†,‡ and Tejal A. Desai*,† 5 †Therapeutic Micro and Nanotechnology Laboratory, Department of Bioengineering and Therapeutic Sciences, University of 6 California, San Francisco, San Francisco, California 94158-2330, United States 7 ‡Advanced Materials and Nanobiotech...

The infectious ribonucleic acid (RNA) of potato spindle tuber virus (PSTV) can be separated by hydroxyapatite chromatography from double-stranded RNA detectable in low amounts in both infected and uninfected plant tissue extracts. The chromatographic behavior of ribonuclease-sensitive PSTV RNA resembles that of transfer RNA.

Hydroxyapatite-supported silver nanoparticles (AgHAP) acted as a highly efficient reusable heterogeneous catalyst for hydration of diverse nitriles, including heteroaromatic ones, into amides in water.

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We report molecular dynamics simulations of shear in a biomimetic hydroxyapatite-collagen composite. Our model exhibits elastic properties fully dominated by the inorganic component. However, beyond the elastic regime the biomolecules along with the hierarchical nature of the composite account for the formation of structure-inherent slip zones. These accommodate shear without compromising the o...