Pharmacology Division, Indian Institute of Chemical Technology, Hyderabad, India.
Phytomedicine. 2013 Mar 15;20(5):453-60. doi: 10.1016/j.phymed.2012.12.001. Epub 2013 Jan 23.
Nephrotoxicity is an important complication in cancer patients undergoing cisplatin therapy. Oxidative stress, inflammation and apoptosis/necrosis are the major patho-mechanisms of cisplatin induced nephrotoxicity. In the present study, hesperidin, a naturally-occurring bioflavonoid has been demonstrated to have protective effect on cisplatin-induced renal injury in rats. Cisplatin intoxication resulted in structural and functional renal impairment which was revealed by massive histopathological changes and elevated blood urea nitrogen and serum creatinine levels, respectively. Renal injury was associated with oxidative stress/lipid peroxidation as evident by increased reactive oxygen species (ROS) and malondialdehyde (MDA) formation with decreased levels of antioxidants such as reduced glutathione, vitamin C, catalase, superoxide dismutase, glutathione reductase, glutathione peroxidase and glutathione-S-transferase. Cisplatin administration also triggered inflammatory response in rat kidneys by inducing pro-inflammatory cytokine, TNF-α, with the increased expression of myeloperoxidase (MPO). Furthermore, cisplatin increased the activity of caspase-3 and DNA damage with decreased tissue nitric oxide levels. Hesperidin treatment significantly attenuated the cisplatin-induced oxidative stress/lipid peroxidation, inflammation (infiltration of leukocytes and pro-inflammatory cytokine), apoptosis/necrosis (caspase-3 activity with DNA damage) as well as increased expression of nitric oxide in the kidney and improved renal function. Thus, our results suggest that hesperidin co-administration may serve as a novel and promising preventive strategy against cisplatin-induced nephrotoxicity.
肾毒性是癌症患者接受顺铂治疗的一个重要并发症。氧化应激、炎症和细胞凋亡/坏死是顺铂诱导肾毒性的主要病理机制。在本研究中,橙皮苷,一种天然存在的生物类黄酮,已被证明对顺铂诱导的大鼠肾损伤具有保护作用。顺铂中毒导致结构和功能的肾功能损害,这表现在大量的组织病理学变化和升高的血尿素氮和血清肌酐水平。肾损伤与氧化应激/脂质过氧化有关,这表现在活性氧(ROS)和丙二醛(MDA)的形成增加,而抗氧化剂如还原型谷胱甘肽、维生素 C、过氧化氢酶、超氧化物歧化酶、谷胱甘肽还原酶、谷胱甘肽过氧化物酶和谷胱甘肽-S-转移酶的水平降低。顺铂给药还通过诱导促炎细胞因子 TNF-α,在大鼠肾脏中引发炎症反应,增加髓过氧化物酶(MPO)的表达。此外,顺铂增加了 caspase-3 的活性和 DNA 损伤,同时降低了组织中一氧化氮的水平。橙皮苷治疗显著减轻了顺铂诱导的氧化应激/脂质过氧化、炎症(白细胞浸润和促炎细胞因子)、细胞凋亡/坏死(caspase-3 活性与 DNA 损伤)以及肾脏中一氧化氮的表达增加,并改善了肾功能。因此,我们的结果表明,橙皮苷联合治疗可能是一种新的、有前途的预防顺铂诱导肾毒性的策略。
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