Photodynamic therapy of rat endometrium sensitized with tin ethyl etiopurpurin.
J Am Assoc Gynecol Laparosc
; 3(4): 561-70, 1996 Aug.
Article
em En
| MEDLINE
| ID: mdl-9050689
ABSTRACT
STUDY OBJECTIVE:
To evaluate endometrial ablation in the rat using photodynamic therapy and the photosensitizer tin ethyl etiopurpurin (SnET2).DESIGN:
Laboratory research.SETTING:
A pharmaceutical and device manufacturing company. MATERIALS Forty-five healthy female rats (age 8-10 wks).INTERVENTIONS:
Groups of three to five rats were given SnET2 by either intrauterine or intravenous administration. Light treatment was given at either 3 or 24 hours after SnET2 administration at a light dose of 75, 150, or 200 J/cm. MEASUREMENTS AND MAINRESULTS:
A fluorescence detection system was employed to determine relative drug uptake of SnET2 into uterine tissue. The highest levels of SnET2 were detected at 3 hours. After light treatment, responses of uterine tissues were evaluated histologically. The best endometrial ablation was seen when SnET2 was given by intrauterine administration with light treatment at 150 J/cm 24 hours later. A consistent transmural response was seen with this route of administration at 200 J/cm. Intravenous SnET2 gave inconsistent responses. In light-only controls, all light doses caused no tissue response. The depth of necrosis in tissues treated with photodynamic therapy were light-dose dependent.CONCLUSION:
With either route of SnET2 administration, drug uptake was confirmed and a light-dose-dependent response in the walls of rat uterine horns was demonstrated.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Fotoquimioterapia
/
Radiossensibilizantes
/
Endométrio
Idioma:
En
Ano de publicação:
1996
Tipo de documento:
Article