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Diallyl Disulfide Prevents Cyclophosphamide-Induced Hemorrhagic Cystitis in Rats through the Inhibition of Oxidative Damage, MAPKs, and NF-kappaB Pathways
Article in En | WPRIM | ID: wpr-55790
Responsible library: WPRO
ABSTRACT
This study investigated the possible effects and molecular mechanisms of diallyl disulfide (DADS) against cyclophosphamide (CP)-induced hemorrhagic cystitis (HC) in rats. Inflammation response was assessed by histopathology and serum cytokines levels. We determined the protein expressions of nuclear transcription factor kappa-B (NF-kappaB), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and tumor necrosis factor-alpha (TNF-alpha), oxidative stress, urinary nitrite-nitrate, malondialdehyde (MDA), and 8-hydroxy-2'-deoxyguanosine (8-OHdG). Finally, we studied the involvement of mitogen-activated protein kinases (MAPKs) signaling in the protective effects of DADS against CP-induced HC. CP treatment caused a HC which was evidenced by an increase in histopathological changes, proinflammatory cytokines levels, urinary nitrite-nitrate level, and the protein expression of NF-kappaB, COX-2, iNOS, TNF-alpha, p-c-Jun N-terminal kinase (JNK), and p-extracellular signal regulated kinase (ERK). The significant decreases in glutathione content and glutathione-S-transferase and glutathione reductase activities, and the significant increase in MDA content and urinary MDA and 8-OHdG levels indicated that CP-induced bladder injury was mediated through oxidative DNA damage. In contrast, DADS pretreatment attenuated CP-induced HC, including histopathological lesion, serum cytokines levels, oxidative damage, and urinary oxidative DNA damage. DADS also caused significantly decreased the protein expressions of NF-kappaB, COX-2, iNOS, TNF-alpha, p-JNK, and p-ERK. These results indicate that DADS prevents CP-induced HC and that the protective effects of DADS may be due to its ability to regulate proinflammatory cytokines production by inhibition of NF-kappaB and MAPKs expressions, and its potent anti-oxidative capability through reduction of oxidative DNA damage in the bladder.
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Full text: 1 Index: WPRIM Main subject: Phosphotransferases / Transcription Factors / Urinary Bladder / DNA Damage / Cytokines / NF-kappa B / Tumor Necrosis Factor-alpha / Oxidative Stress / Mitogen-Activated Protein Kinases / Cyclophosphamide Limits: Animals Language: En Journal: Biomolecules & Therapeutics Year: 2015 Type: Article
Full text: 1 Index: WPRIM Main subject: Phosphotransferases / Transcription Factors / Urinary Bladder / DNA Damage / Cytokines / NF-kappa B / Tumor Necrosis Factor-alpha / Oxidative Stress / Mitogen-Activated Protein Kinases / Cyclophosphamide Limits: Animals Language: En Journal: Biomolecules & Therapeutics Year: 2015 Type: Article