Clinical Pharmacokinetics of the PDT Photosensitizers Porfimer Sodium (Photofrin), 2-[1-Hexyloxyethyl]-2-Devinyl Pyropheophorbide-a (Photochlor) and 5-ALA-Induced Protoporphyrin IX

2006 ◽  
Vol 38 (5) ◽  
pp. 439-444 ◽  
Author(s):  
David A. Bellnier ◽  
William R. Greco ◽  
Gregory M. Loewen ◽  
Hector Nava ◽  
Allan R. Oseroff ◽  
...  
Keyword(s):  
Protoporphyrin Ix ◽  
Clinical Pharmacokinetics ◽  
Porfimer Sodium ◽  
Pyropheophorbide A

scholarly journals Photophysical Properties of Protoporphyrin IX, Pyropheophorbide-a, and Photofrin® in Different Conditions

2021 ◽  
Vol 14 (2) ◽  
pp. 138
Author(s):  
Bauyrzhan Myrzakhmetov ◽  
Philippe Arnoux ◽  
Serge Mordon ◽  
Samir Acherar ◽  
Irina Tsoy ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Photophysical Properties ◽  
Protoporphyrin Ix ◽  
Fluorescence Emission ◽  
Solvent Polarity ◽  
Visible Absorption ◽  
Light Dosimetry ◽  
Time Resolved ◽  
Pyropheophorbide A ◽  
Influence Of Solvent

Photodynamic therapy (PDT) is an innovative treatment of malignant or diseased tissues. The effectiveness of PDT depends on light dosimetry, oxygen availability, and properties of the photosensitizer (PS). Depending on the medium, photophysical properties of the PS can change leading to increase or decrease in fluorescence emission and formation of reactive oxygen species (ROS) especially singlet oxygen (1O2). In this study, the influence of solvent polarity, viscosity, concentration, temperature, and pH medium on the photophysical properties of protoporphyrin IX, pyropheophorbide-a, and Photofrin® were investigated by UV-visible absorption, fluorescence emission, singlet oxygen emission, and time-resolved fluorescence spectroscopies.

scholarly journals New Photosensitizers for Photodynamic Therapy in Gastroenterology

1999 ◽  
Vol 13 (5) ◽  
pp. 389-392 ◽  
Author(s):  
SG Bown ◽  
AZ Rogowska
Keyword(s):  
Photodynamic Therapy ◽  
Barrett’S Esophagus ◽  
Barrett's Esophagus ◽  
Protoporphyrin Ix ◽  
Porfimer Sodium ◽  
Pancreatic Cancers ◽  
Amino Levulinic Acid ◽  
Photosensitizing Agent

Most applications of photodynamic therapy (PDT) in gastroenterology to date have used porfimer sodium as the photosensitizing agent. For destroying small lesions in the wall of the gastrointestinal tract in inoperable patients, it has proved to be most effective, but attempts to achieve circumferential mucosal ablation, as in the treatment of Barrett’s esophagus, have led to a high incidence of strictures, and all patients have cutaneous photosensitivity, which can last up to three months. Two new photosensitizers are of particular interest to gastroenterologists. PDT with metatetrahydroxyphenyl chlorin produces a similar biological effect as PDT with porfimer sodium, but the light doses required are much smaller, and cutaneous photosensitivity lasts only two to three weeks. Further, it can be used with percutaneous light delivery to destroy localized pancreatic cancers. The photosensitizing agent 5-amino levulinic acid, converted in vivo into the photoactive derivative protoporphyrin IX, sensitizes the mucosa much more than the underlying layers. This makes it feasible to destroy areas of abnormal mucosa without damaging the underlying muscle and is, therefore, better for treating Barrett’s esophagus. Detailed clinical studies are required to establish the real role of PDT with the use of these and other new photosensitizers.

Clinical pharmacokinetics of protoporphyrin IX (PpIX) in condylomata acuminata patients: ex vivo fluorescence examination

2007 ◽  
Author(s):  
Xiu-Li Wang ◽  
Hong-Wei Wang ◽  
Zheng Huang ◽  
Herbert Stepp ◽  
Reinhold Baumgartner ◽  
...  
Keyword(s):  
Ex Vivo ◽  
Protoporphyrin Ix ◽  
Condylomata Acuminata ◽  
Clinical Pharmacokinetics

Analysis of photosensitivity in Japanese cancer-bearing patients receiving photodynamic therapy with porfimer sodium (PhotofrinTM)

2001 ◽  
Vol 17 (5) ◽  
pp. 241-243 ◽  
Author(s):  
Shin-Ichi Moriwaki ◽  
Junko Misawa ◽  
Yasushi Yoshinari ◽  
Ichiro Yamada ◽  
Masahiro Takigawa ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Porfimer Sodium

Protoporphyrin-IX Fluorescence in Skull Base Meningiomas' Resection

2013 ◽  
Vol 74 (S 01) ◽  
Author(s):  
Tang ManHon ◽  
Carol Goodman ◽  
Harry Moseley ◽  
Sam Eljamel
Keyword(s):  
Skull Base ◽  
Protoporphyrin Ix ◽  
Skull Base Meningiomas

Protoporphyrin IX Fluorescence Photobleaching and the Response of Rat Barrett's Esophagus Following 5-aminolevulinic Acid Photodynamic Therapy

2006 ◽  
Vol 82 (6) ◽  
pp. 1638 ◽  
Author(s):  
Ingrid A. Boere ◽  
Dominic J. Robinson ◽  
Henriette S. de Bruijn ◽  
Jolanda Kluin ◽  
Hugo W. Tilanus ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Barrett’S Esophagus ◽  
Barrett's Esophagus ◽  
Aminolevulinic Acid ◽  
Protoporphyrin Ix
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