Biomimetic collagen/phospholipid coatings improve formation of hydroxyapatite nanoparticles on titanium

Materials Science & Engineering. C, Materials for Biological Applications
Gilia C M RuizAna P Ramos

Abstract

Osseointegration between the surface of a certain material and the host tissue helps to evaluate the potential use of biomaterials in bone replacement. The physicochemical properties and biochemical composition of the material's surface regulates osseointegration. This study investigates how collagen into biomimetic matrixes affects hydroxyapatite (HAp) growth. Collagen was inserted into insoluble Langmuir monolayers containing either 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) or octadecylphosphonic acid (OPA) and transferred to titanium (Ti) supports by means of the Langmuir-Blodgett (LB) technique. The resulting films served as matrixes for HAp growth upon exposure of Ti discs to SBF. Scanning electron microscopy, atomic force microscopy, vibrational spectroscopy in the infrared region, X-ray diffraction, and energy dispersive X-ray spectroscopy aided characterization of the samples. Properties such as wettability, roughness, and surface free energy were also studied. The biocompatibility of the samples was investigated by osteoblast viability assays in vitro. Collagen interacted with DPPC and OPA at the air/water interface as evidenced by the pressure surface isotherms and the compressional modulus. Moreover, co...Continue Reading

Citations

Jan 10, 2018·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Amanda N de FariaAna P Ramos
Aug 24, 2017·Biophysics Reviews·Thais T PaterliniAna P Ramos
Mar 27, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·José Diego FernandesCarlos José Leopoldo Constantino
Apr 23, 2021·Colloids and Surfaces. B, Biointerfaces·Mateus D MaximinoPriscila Aléssio
Aug 21, 2020·Journal of Colloid and Interface Science·Weijie ZhaoC Magnus Johnson
Nov 19, 2021·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Lucas Fabricio Bahia NogueiraAna Paula Ramos

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