Using gold nanorods labelled with antibodies under the photothermal action of NIR laser radiation on Staphylococcus aureus

The effect of NIR laser radiation (808 nm) and gold nanorods on the cells of two strains of Staphylococcus aureus, one of them being methicillin-sensitive and the other being methicillinresistant, is studied. Nanorods having the dimensions 10 × 44 nm with the absorption maximum in the NIR spectral region, functionalized with human immunoglobulins IgA and IgG, are synthesised. It is shown that the use of nanoparticles in combination with NIR irradiation leads to killing up to 97 % of the population of microorganisms. © 2014 Kvantovaya Elektronika and Turpion Ltd.