In vivo (19)F MRI and (19)F MRS of (19)F-labelled boronophenylalanine-fructose complex on a C6 rat glioma model to optimize boron neutron capture therapy (BNCT)

Phys Med Biol. 2008 Dec 7;53(23):6979-89. doi: 10.1088/0031-9155/53/23/021. Epub 2008 Nov 12.

Abstract

Boron neutron capture therapy (BNCT) is a promising binary modality used to treat malignant brain gliomas. To optimize BNCT effectiveness a non-invasive method is needed to monitor the spatial distribution of BNCT carriers in order to estimate the optimal timing for neutron irradiation. In this study, in vivo spatial distribution mapping and pharmacokinetics evaluation of the (19)F-labelled boronophenylalanine (BPA) were performed using (19)F magnetic resonance imaging ((19)F MRI) and (19)F magnetic resonance spectroscopy ((19)F MRS). Characteristic uptake of (19)F-BPA in C6 glioma showed a maximum at 2.5 h after compound infusion as confirmed by both (19)F images and (19)F spectra acquired on blood samples collected at different times after infusion. This study shows the ability of (19)F MRI to selectively map the bio-distribution of (19)F-BPA in a C6 rat glioma model, as well as providing a useful method to perform pharmacokinetics of BNCT carriers.

MeSH terms

  • Animals
  • Boron Compounds* / pharmacokinetics
  • Boron Neutron Capture Therapy / methods*
  • Brain / metabolism
  • Brain / pathology
  • Brain Neoplasms / metabolism
  • Brain Neoplasms / radiotherapy
  • Cell Line, Tumor
  • Demography
  • Fluorine Radioisotopes / blood
  • Fructose / analogs & derivatives*
  • Fructose / pharmacokinetics
  • Glioma / metabolism
  • Glioma / radiotherapy*
  • Magnetic Resonance Imaging
  • Magnetic Resonance Spectroscopy
  • Male
  • Neoplasms, Experimental / physiopathology
  • Rats
  • Rats, Wistar

Substances

  • 4-boronophenylalanine-fructose
  • Boron Compounds
  • Fluorine Radioisotopes
  • Fructose