Journal article
TRANSCUTANEOUS DETERMINATION OF TISSUE DIHEMATOPORPHYRIN ETHER CONTENT - A DEVICE TO OPTIMIZE PHOTODYNAMIC THERAPY
Archives of dermatology (1960), v 127(12), pp 1794-1798
01 Dec 1991
PMID: 1845278
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Abstract
Photodynamic therapy involves the use of light of appropriate wavelength to excite a photosensitizer resulting in tissue destruction. The photosensitizer dihematoporphyrin ether is selectively retained in tumors allowing for tumor destruction while sparing normal structures. Accessibility of skin tumors makes them well suited for photodynamic therapy. Tissue and tumor dihematoporphyrin ether content is estimated based on the amount of dihematoporphyrin ether administered. In our study, skin dihematoporphyrin ether content was measured in guinea pigs transcutaneously by a hand-held fluorometer and compared with dihematoporphyrin ether determinations done on skin biopsy specimens. Fluorometry was performed on guinea pigs receiving 0, 2.5, 5, 10, and 25 mg/kg of dihematoporphyrin ether.
Transcutaneous measurements of skin fluorescence increased with increasing dihematoporphyrin ether dose and correlated well with skin dihematoporphyrin ether content as determined by extracting dihematoporphyrin other from skin samples. Transcutaneous fluorescent measurements of guinea pigs given 0 and 2.5, 2.5 and 5,5 and 10, and 10 and 25 mg/kg of dihematoporphyrin ether differed in a statistically significant manner.
Transcutaneous fluorometric determination of dihematoporphyrin ether content and extraction of dihematoporphyrin ether from skin samples were able to reflect differences in dihematoporphyrin ether dosing and presumably skin dihematoporphyrin ether content. However, transcutaneous fluorometry provides an instantaneous estimate of tissue dihematoporphyrin ether without the need for a tissue sample. This may provide a clinical tool to predict more accurately the optimal light dose necessary to maximize photodynamic therapy.
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Details
- Title
- TRANSCUTANEOUS DETERMINATION OF TISSUE DIHEMATOPORPHYRIN ETHER CONTENT - A DEVICE TO OPTIMIZE PHOTODYNAMIC THERAPY
- Creators
- E F BernsteinW S FriaufP D SmithJ W ColeR E SolomonJ F FesslerG F ThomasC BlackA Russo
- Publication Details
- Archives of dermatology (1960), v 127(12), pp 1794-1798
- Publisher
- Amer Medical Assoc
- Number of pages
- 5
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Psychiatry
- Web of Science ID
- WOS:A1991HB97500004
- Scopus ID
- 2-s2.0-0026334778
- Other Identifier
- 991019183982604721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Dermatology