title: Topical administration of tetrasodium-meso-tetraphenylporphinesulfonate (TPPS) and red light irradiation for the treatment of superficial neoplastic lesions.
abstract: In photodynamic therapy, systemic administration of photosensitizing agents induces cutaneous photosensitization in patients. This side-effect can be avoided by topical administration of the agents when only surface lesions are involved. A hydroalcoholic solution of tetrasodium-meso-tetraphenylporphinesulfonate (TPPS) containing Azone, a percutaneous penetration enhancer, was investigated to evaluate its photosensitizing potential in the treatment of 33 primary and recurrent neoplastic lesions of the skin. A complete remission was obtained of lesions with clinical thickness of less than 2 mm. Treatment effectiveness depends on both light and drug penetration through skin. Further studies are in progress to optimize treatment parameters.
mesh_terms: D000287:Administration, Topical; D000368:Aged; D000369:Aged, 80 and over; D001381:Azepines / Q000008:administration & dosage; D001943:Breast Neoplasms / Q000188:drug therapy / Q000473:pathology; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010778:Photochemotherapy; D011166:Porphyrins / Q000008:administration & dosage / Q000627:therapeutic use*; D012878:Skin Neoplasms / Q000188:drug therapy* / Q000473:pathology
chemical_list: D001381:Azepines; D011166:Porphyrins; C035229:laurocapram; C016136:tetraphenylporphine sulfonate