PHOTODYNAMIC THERAPY:
Conventional Pro Drugs are InActive Compounds which are Normally Metabolized in the Body to their Active Form.
A Variation of the Pro Drug Approach is the Concept of a
"SLEEPING AGENT". The Best Example of this Approach is the
use of "PHOTOSENSITIZING" Agents such as "PORPHYRINS" or "CHLORINE" in Cancer Treatment is called
"PHOTODYNAMIC THERAPY(PDT)". "TEMOPORFIN(FOSCAN)" is an Example of "CHLORINE PHOTOSENSTIZING AGENT". For
Example the "LIPOSOMES", which carry the
Agent can be Engulfed and Destroyed by Cells of the "RETICULOENDOTHELIAL"
System. It was observation that "PORPHYRINS" could Break Down Cells that led to the idea
that these
Agents could be used to break down the "CANCER CELLS".
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