Abstract
Local laser hyperthermia of grafted RShM-5 tumors in mice with the use of plasmon resonant gold nanoparticles has been carried out. Accumulation of particles in the tumor was monitored in vivo noninvasively by optical coherence tomography. Thereby it was determined that the maximal content of nanoparticles in the tumor was reached within 5 h after intravenous administration, and laser hyperthermia was performed at this time. Monitoring the tumor temperature during the treatment by IR thermography and acoustic thermometry showed that the nanoparticles provided efficient temperature elevation inside the tumor as well as more selective heating. Local laser hyperthermia with gold nanoparticles, but not the laser exposure alone, substantially inhibited tumor growth in several days after a single session.
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