Bone reconstruction: Au nanocomposite bioglasses with antibacterial properties.

Autor: Grandi S; Department of Chemistry, University of Pavia, Pavia, Italy., Cassinelli V, Bini M, Saino E, Mustarelli P, Arciola CR, Imbriani M, Visai L
Jazyk: angličtina
Zdroj: The International journal of artificial organs [Int J Artif Organs] 2011 Sep; Vol. 34 (9), pp. 920-8.
DOI: 10.5301/ijao.5000059
Abstrakt: Bioglasses are of wide interest since they spontaneously bond and integrate with living bone in the body. By varying the glass chemistry and/or by adding some dopants, it is possible to improve their clinical applications. Gold nanoparticles (Au NPs) are a well-known antibacterial agent, as well as a unique probe for sensing and imaging applications. We report on the synthesis of a 58S bioglass doped with Au NPs at two doping levels: 0.1% wt. and 1% wt. Antibacterial properties were observed on the Gram-positive Staphylococcus aureus, whereas no significant effects were found on the Gram-negative Escherichia coli. A possible mechanism of action of Au NPs towards bacteria has been described.
Databáze: MEDLINE