Induction of COX-2 expression by acrolein in the rat model of hemorrhagic cystitis

Aim: Acrolein (ACR) is a urinary metabolite of cyclophosphamide (CPS) and ifosfamide (IFS), which has been demonstrated to be the causative agent of hemorrhagic cystitis (HC), induced by these compounds. In this study, we investigate the participation of cyclooxygenase-2 (COX-2) on ACR-induced HC. M...

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Bibliographic Details
Main Author: Macedo, Francisco Yuri Bulcão (author)
Other Authors: Baltazar, Fátima (author), Mourão, Lívia Cajaseiras (author), Almeida, Paulo Roberto Carvalho (author), Mota, José Mauricio S. C. (author), Schmitt, Fernando C. (author), Ribeiro, Ronaldo A. (author)
Format: article
Language:eng
Published: 2008
Subjects:
Acrolein
Administration, Intravesical
Animals
Cyclooxygenase-2
Cystitis
Disease Models, Animal
Dose-Response Relationship, Drug
Enzyme Induction
Hemorrhage
Male
Organ Size
Rats
Rats, Wistar
Time Factors
Urinary Bladder
Hemorrhagic cystitis
Science & Technology
Online Access:http://hdl.handle.net/1822/61605
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/61605
Description
Summary:Aim: Acrolein (ACR) is a urinary metabolite of cyclophosphamide (CPS) and ifosfamide (IFS), which has been demonstrated to be the causative agent of hemorrhagic cystitis (HC), induced by these compounds. In this study, we investigate the participation of cyclooxygenase-2 (COX-2) on ACR-induced HC. Methods: Male Wistar rats (150–200 g; six rats per group) were treated with distilled water or intravesical ACR and analyzed by changes in bladder wet weight, macroscopic and microscopic parameters and COX-2 expression. Results: COX-2 immunohistochemical expression was significant 12 h after ACR administration mainly in subepithelial cells. ACR injection also alters some macroscopic and microscopic parameters in bladder of rats analyzed by Gray’s criteria. Conclusions: COX-2 participates in the pathogenesis of ACR-induced HC first seen 12 h after initial contact between ACR and urothelium.

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