摘要

Background. Gentamicin, a widely used antibiotic for the treatment of bacterial infection, can cause nephrotoxicity. Tetramethylpyrazine (TMP) is a compound purified from the rhizome of Ligusticum wallichi (Chuanxiong) and has been found to protect against ischaemia - eperfusion injury, nephritis and alcohol-induced toxicity in rat kidneys. Methods. We used rat renal tubular cells (RTCs), NRK-52E, in this study. The cytotoxicity of gentamicin was checked with transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL) staining, and the generation of reactive oxygen species was measured using the fluorescent probe 2,7-dichlorofluorescein. We evaluated several apoptotic parameters: cleaved caspase levels, tumour necrosis factor (TNF-α) excretion and nuclear factor Kappa B (NF-κB) activity. We also examined the TMP protective effect on gentamicin-induced apoptosis in rat kidneys. Results. The results of this study showed that gentamicin was found to markedly induce apoptosis in NRK-52E cells in a dose-dependent manner; that TMP expressed a dose-dependent protective effect against gentamicin-induced apoptosis; that pre-treatment of the cells with 50 or 100 μM of TMP effectively decreased the reactive oxygen species formation induced by gentamicin; that TMP was found to inactivate the gentamicin-stimulated activities of caspase-3, caspase-8 and caspase-9, to inhibit gentamicin-induced release of cytochrome c, as well as to raise the expression of Bcl-xL; that TMP inhibited the gentamicin-induced TNF-α excretion, and inactivated the transcription factor NF-κB; and that the TMP treatment significantly reduced apoptotic injury in rat RTCs. Conclusions. Based on the results of this study, we suggest that TMP can attenuate gentamicin-induced oxidative stress and apoptotic injury in rat RTCs, and that its character may have therapeutic potential for patients with renal diseases.
原文英語
頁(從 - 到)732-739
頁數8
期刊Nephrology Dialysis Transplantation
22
發行號3
DOIs
出版狀態已發佈 - 三月 2007

ASJC Scopus subject areas

  • 腎臟病學
  • 移植

指紋

深入研究「Tetramethylpyrazine protects rat renal tubular cell apoptosis induced by gentamicin」主題。共同形成了獨特的指紋。

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