Laser induced fluorescence studies of the biodistribution of carotenoporphyrins in mice
Author
Summary, in English
The biodistribution of two recently developed tumour markers, trimethylated (CP(Me)(3)) and trimethoxylated (CP(OMe)(3)) carotenoporphyrin, was investigated by means of laser-induced fluorescence (LIF) after i.v. injection into 38 tumour-bearing (MS-2 fibrosarcoma) female Balb/c mice. At 3, 24, 48 or 96 h after administration, the carotenoporphyrin fluorescence was measured in tumoral and peritumoral tissue, as well as in the abdominal, thoracic and cranial cavities. The fluorescence was induced by a nitrogen laser-pumped dye laser, emitting light at 425 nm, and analysed by a polychromator equipped with an image-intensified CCD camera. The fluorescence was evaluated at 490, 655 and 720 nm: the second and third wavelengths represent the carotenoporphyrin (CP)-related peaks, whereas the first one is close to the peak of the tissue autofluorescence. The tumour and the liver were the two tissue types showing the strongest carotenoporphyrin-related fluorescence, whereas the cerebral cortex and muscle consistently exhibited weak substance-related fluorescence. In most tissue types, the fluorescence intensities decreased over time. A few exceptions were observed, notably the liver, in which the intensity remained remarkably constant over the time period investigated.
Department/s
Publishing year
1997
Language
English
Pages
355-364
Publication/Series
British Journal of Cancer
Volume
76
Issue
3
Full text
Document type
Journal article
Publisher
Nature Publishing Group
Topic
- Cancer and Oncology
Status
Published
ISBN/ISSN/Other
- ISSN: 1532-1827