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Researchers at University of Tehran Release New Data on Tissue Engineering (Development of biomimetic gelatin-chitosan/hydroxyapatite nanocomposite...

July 9, 2014



Researchers at University of Tehran Release New Data on Tissue Engineering (Development of biomimetic gelatin-chitosan/hydroxyapatite nanocomposite via double diffusion method for biomedical applications)

By a News Reporter-Staff News Editor at Biotech Week -- Investigators publish new report on Biomedicine and Biomedical Engineering. According to news reporting out of Tehran, Iran, by NewsRx editors, research stated, "In this research, nanocomposite scaffolds were prepared from gelatin/chitosan and hydroxyapatite via a biomimetic method. The prepared scaffolds were then evaluated by means of commonly used bulk techniques: X-ray diffraction, scanning electron microscopy and Fourier transform infra-red spectroscopy."

Our news journalists obtained a quote from the research from the University of Tehran, "In this study, the gelatin-chitosan/apatite nanocomposite scaffolds were fabricated using the applied biomimetic method accompanied by freeze drying. The apatite was formed using double diffusion within the gelatin/chitosan hydrogel at similar pH and temperature to the human body. The obtained nanocomposites were soaked in glutaraldehyde solution in order to enhance their mechanical properties and also make them insoluble in water. Diffusion of calcium and phosphate ions from lateral sides into the hydrogel middle caused formation of a white layered precipitate. Analysis of precipitates formed within the hydrogel middle for the samples showed that detected materials are composed of carbonated hydroxyapatite and amorphous dicalcium phosphate dihydrate. After incubation in simulated body fluid, the amorphous phase converted to crystalline hydroxyapatite, which process is similar to bone formation in the human body. Mechanical properties obtained for the scaffolds were comparable to spongy bone. Also in this work, MTT assay and alkaline phosphatase activity on the prepared scaffolds were evaluated and discussed."

According to the news editors, the research concluded: "Finally, the obtained experimental results ascertained that the nanocomposite prepared with chitosan/gelatin (20/80) had appropriate properties for bone tissue engineering scaffold."

For more information on this research see: Development of biomimetic gelatin-chitosan/hydroxyapatite nanocomposite via double diffusion method for biomedical applications. International Journal of Materials Research, 2014;105(5):493-501. International Journal of Materials Research can be contacted at: Carl Hanser Verlag, Kolbergerstrasse 22, Postfach 86 04 20, D-81679 Munich, Germany (see also Biomedicine and Biomedical Engineering).

Our news journalists report that additional information may be obtained by contacting M. Raz, Univ Tehran Med Sci, Sch Dental, Dental Biomat Department, Tehran, Iran. Additional authors for this research include F. Moztarzadeh, M.A. Shokrgozar, M. Azami and M. Tahriri.

Keywords for this news article include: Iran, Asia, Tissue Engineering, Biomedicine and Biomedical Engineering, Tehran, Gelatin, Biomimetics, Bone Research, Bioengineering, Scleroproteins, Bionanotechnology, Nanobiotechnology, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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