Department of Studies in Biochemistry, University of Mysore, Mysore, Karnataka, India.
J Pharm Pharmacol. 2013 Apr;65(4):604-14. doi: 10.1111/jphp.12016. Epub 2013 Jan 4.
This study investigated the protective efficacy of crocin against hepatotoxicity induced by cyclophosphamide (CP) in Wistar rats.
The experimental rats were treated with crocin orally at a dose of 10 mg/kg for 6 consecutive days after the administration of a single intraperitoneal dose of CP (150 mg/kg). The ameliorative effect of crocin on organ toxicity was studied by evaluating oxidative stress enzymes, inflammatory cytokines and histological sections.
A single intraperitoneal CP injection significantly elevated endogenous reactive oxygen species and oxidation of lipids and proteins, which are the hallmarks of oxidative damage in liver and serum. In consequence, the primary defensive reduced glutathione, total thiol and antioxidant enzymes such as superoxide dismutase, catalase, glutathione-S-transferase and glutathione peroxidase, were significantly reduced. In addition, liver and serum aspartate aminotransferase and alanine aminotransferase along with acid and alkaline phosphatase were considerably increased. Oral administration of crocin significantly rejuvenated all the above altered markers to almost normal state. The protective efficacy of crocin was further supported by the histological assessment and restoration of CP-induced inflammatory cytokines and enzyme levels compared with the control drug.
The results obtained suggest the protective nature of crocin against CP-induced oxidative damage/inflammation and organ toxicity.
本研究旨在探讨西红花酸(crocin)对环磷酰胺(CP)诱导的 Wistar 大鼠肝毒性的保护作用。
实验大鼠在单次腹腔注射 CP(150mg/kg)后连续 6 天每天口服给予西红花酸(10mg/kg)。通过评估氧化应激酶、炎性细胞因子和组织学切片来研究西红花酸对器官毒性的改善作用。
单次腹腔 CP 注射显著升高了肝和血清中内源性活性氧和脂质及蛋白质氧化,这是氧化损伤的标志。因此,主要的防御性还原型谷胱甘肽、总巯基和抗氧化酶如超氧化物歧化酶、过氧化氢酶、谷胱甘肽-S-转移酶和谷胱甘肽过氧化物酶显著减少。此外,肝和血清天冬氨酸氨基转移酶和丙氨酸氨基转移酶以及酸性和碱性磷酸酶也显著增加。与对照药物相比,西红花酸的口服给药显著将上述所有改变的标志物恢复到接近正常状态。与对照药物相比,西红花酸对 CP 诱导的炎症细胞因子和酶水平的抑制作用进一步支持了其保护作用。
研究结果表明西红花酸具有对抗 CP 诱导的氧化损伤/炎症和器官毒性的保护作用。