Sharma Veena, Janmeda Pracheta
Department of Bioscience and Biotechnology, Banasthali University, Banasthali, Rajasthan, India.
Toxicol Int. 2014 Jan;21(1):37-43. doi: 10.4103/0971-6580.128790.
The aim of this study was to examine the impacts of N-nitrosodiethylamine (DENA), a potent environment carcinogen on liver tissue of mice which was attenuated by isolated flavonoid and hydro-ethanolic extract of Euphorbia neriifolia (HEEN) leaves.
Carcinogenicity was induced in albino mice by a single oral administration of DENA (50 mg/kg body weight). The HEEN (150 and 400 mg/kg body weight), butylated hydroxyanisole (BHA; 0.5 and 1%) and E. neriifolia flavonoid (ENF; 50 mg/kg body weight) were estimated to examine the possible anti-cancer potential.
DENA exposed animals showed alterations in normal hepatic histo-architecture, which comprised of necrosis (N), dilated sinusoids and vacuolization of the cells. Mice treated with E. neriifolia lower (ENL) and higher (ENH) dose and ENF before intoxicated with DENA showed that the liver cells were normal, with very little necrosis (Day 31). On the other hand, BHA higher (BHAH) and lower (BHAL) dose failed to diminish the abnormalities caused by the DENA.
Results of the present study suggests that the ENH and ENF protects the hepatic tissue against DENA-induced hepatic carcinoma. The results could also be expressed in the order of ENH> ENF> ENL> BHAH> BHAL.
本研究旨在考察强环境致癌物N-亚硝基二乙胺(DENA)对小鼠肝脏组织的影响,以及大戟叶大戟(HEEN)叶中分离出的黄酮类化合物和水乙醇提取物对其的减弱作用。
通过单次口服给予DENA(50毫克/千克体重)诱导白化小鼠致癌。评估HEEN(150和400毫克/千克体重)、丁基羟基茴香醚(BHA;0.5%和1%)和大戟叶大戟黄酮(ENF;50毫克/千克体重)以考察其可能的抗癌潜力。
暴露于DENA的动物显示正常肝脏组织结构发生改变,包括坏死(N)、窦状隙扩张和细胞空泡化。在被DENA中毒前用大戟叶大戟低剂量(ENL)和高剂量(ENH)以及ENF处理的小鼠显示肝细胞正常,坏死极少(第31天)。另一方面,BHA高剂量(BHAH)和低剂量(BHAL)未能减轻DENA引起的异常。
本研究结果表明,ENH和ENF可保护肝脏组织免受DENA诱导的肝癌影响。结果也可按ENH>ENF>ENL>BHAH>BHAL的顺序表述。