Experimental Therapies Of Human Pancreatic Carcinoma Transplanted To Nude Mice - A Study On Photodynamic Therapy And Local Interstitial Hyperthermia Using Low Power Nd:YAG Laser

1987 ◽  
Author(s):  
Hisao Tajiri ◽  
Daizo Saito ◽  
Yanao Oguro ◽  
Norio Daikuzono ◽  
Stephen N. Joffe ◽  
...  
1996 ◽  
Vol 21 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Hisao TAJIRI ◽  
Nariyoshi SHINOMIYA ◽  
Akemi HAYAKAWA ◽  
Yoshinari MATSUMOTO ◽  
Shigeaki YOSHIDA

1989 ◽  
Author(s):  
Masoud Panjehpour ◽  
Andrew J. Milligan ◽  
Bergein F. Overholt

2008 ◽  
Vol 265 (2) ◽  
pp. 177-187 ◽  
Author(s):  
Xuguang Zheng ◽  
Feng Jiang ◽  
Mark Katakowski ◽  
Xuepeng Zhang ◽  
Hao Jiang ◽  
...  

2005 ◽  
Vol 20 (2) ◽  
pp. 74-79 ◽  
Author(s):  
Xuepeng Zhang ◽  
Feng Jiang ◽  
Zheng Gang Zhang ◽  
Steven N Kalkanis ◽  
Xin Hong ◽  
...  

1987 ◽  
Vol 73 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Renato Marchesini ◽  
Elsa Melloni ◽  
Giovanni Bottiroli ◽  
Salvatore Andreola ◽  
Giannino Fava ◽  
...  

The main side effect in photodynamic therapy is photosensitization of the patient's skin following systemic administration of the photosensitizing agent. In the case of superficial lesions, this problem can be avoided by topically applying the drug: in this way a local treatment can be performed. We tested the photosensitizing properties of a 2 % solution of TPPS (tetrasodium-tetraphenylporphinesulfonate) in a vehicle containing a penetration enhancer, Azone, on skin of nude mice. An aliquot of 0.1 ml/cm2 of the solution was painted on the skin overlying an s.c. implanted NMU-1 tumor. Subsequently, animals were sacrificed at different times after application. Fluorescence microscopy revealed that TPPS penetration depth was related to time elapsed after application and to painting modalities. Solution penetration was enhanced by wiping with ether immediately before painting. Irradiation at 80 mW/cm2 for 20 min with a dye laser emitting at 640 am, 4 h after TPPS application, produced necrosis of the upper skin layers, up to 0.2 mm in depth. These findings suggest that topical TPPS administration, followed by laser irradiation, may be a suitable treatment modality for skin lesions involving epithelial layers, even though several aspects of this metodology need further investigation.


Sign in / Sign up

Export Citation Format

Share Document