Abstract |
Bacteriochlorin a (BCA), a new photosensitizer for photodynamic therapy, was labelled with 99mTc-pertechnetate following a method for the irreversible coupling of 99mTc-pertechnetate to proteins. Biodistribution studies were conducted in male Syrian Golden hamsters with hamster Greene melanoma implanted s.c. on both sides of the abdomen. After i.v. administration of 99mTc-pertechnetate-labelled BCA 17 tissue and fluid samples were analysed at time intervals ranging from 1 to 24 h. Technetium-labelled BCA showed a pronounced affinity for tissues belonging to the reticuloendothelial system. Peak activities, 1 h post-injection, were distributed as follows: lung, liver, spleen, urine > small intestine, kidney, blood, heart, stomach, large intestine > thyroid, tumour, bone, skin, muscle, eye >> brain. It is concluded that the technetium-labelled photosensitizer BCA does not accumulate selectively in neoplastic tissue.
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Authors | J J Schuitmaker, R I Feitsma, J G Journée-De Korver, T M Dubbelman, E K Pauwels |
Journal | International journal of radiation biology
(Int J Radiat Biol)
Vol. 64
Issue 4
Pg. 451-8
(Oct 1993)
ISSN: 0955-3002 [Print] England |
PMID | 7901307
(Publication Type: Journal Article)
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Chemical References |
- Porphyrins
- bacteriochlorin a
- Sodium Pertechnetate Tc 99m
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Topics |
- Animals
- Cricetinae
- Isotope Labeling
- Male
- Melanoma, Experimental
(metabolism)
- Neoplasm Transplantation
- Porphyrins
(pharmacokinetics)
- Sodium Pertechnetate Tc 99m
- Tissue Distribution
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