Evaluation of prophylactic and therapeutic effects of sildenafil on acute radiation proctitis in rats
Acta cir. bras
; 33(4): 362-374, Apr. 2018. tab, graf
Article
ي En
| LILACS
| ID: biblio-886283
المكتبة المسؤولة:
BR1.1
ABSTRACT
Abstract Purpose:
To investigate the prophylactic and therapeutical effects of sildenafil in a model of acute radiation proctitis (ARP).Methods:
All experimental procedures of this study was examined by histopathological, immunohistochemical and transmission electron microscopic analysis.Results:
Our histopathological evaluations indicated significant increases in lesion severity, cryptic apsis, cryptitis, cryptic distortion, reactive atypia and infiltration depth of the control (proctitis) group. While the prophylaxis group and the treatment group had significantly lower scores. High-dose group showed similar results as prophylaxis group. Histopathological findings of the prophylaxis group was more significant than the treatment group. Immunoreactivities of IL-1β, FGF-2, TNF- α and HIF-1α increased in the control group especially in the epithelial and cryptic regions. On the contrary, sildenafil application caused significant decreases of inflammatory markers in all treatment groups, specifically better results in the prophylaxis group.Conclusion:
The sildenafil has anti-inflammatory effects on ARP, as well as protective effects against ARP and the protective effect of sildenafil surpasses its therapeutic effect histopathologically.Key words
النص الكامل:
1
الفهرس:
LILACS
الموضوع الرئيسي:
Proctitis
/
Radiation Injuries, Experimental
/
Post-Exposure Prophylaxis
/
Sildenafil Citrate
/
Anti-Inflammatory Agents
نوع الدراسة:
Evaluation_studies
/
Prognostic_studies
المحددات:
Animals
اللغة:
En
مجلة:
Acta cir. bras
موضوع المجلة:
CIRURGIA GERAL
/
Procedimentos Cir£rgicos Operat¢rios
السنة:
2018
نوع:
Article