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蜜蜂毒液(意大利蜜蜂)对915兆赫微波辐射诱导的Wistar大鼠淋巴细胞DNA损伤的辐射防护作用:体外研究

Radioprotective effects of honeybee venom (Apis mellifera) against 915-MHz microwave radiation-induced DNA damage in wistar rat lymphocytes: in vitro study.

作者信息

Gajski Goran, Garaj-Vrhovac Vera

机构信息

Institute for Medical Research and Occupational Health, Mutagenesis Unit, Ksaverska cesta 2, 10000 Zagreb, Croatia.

出版信息

Int J Toxicol. 2009 Mar-Apr;28(2):88-98. doi: 10.1177/1091581809335051.

Abstract

The aim of this study is to investigate the radioprotective effect of bee venom against DNA damage induced by 915-MHz microwave radiation (specific absorption rate of 0.6 W/kg) in Wistar rats. Whole blood lymphocytes of Wistar rats are treated with 1 microg/mL bee venom 4 hours prior to and immediately before irradiation. Standard and formamidopyrimidine-DNA glycosylase (Fpg)-modified comet assays are used to assess basal and oxidative DNA damage produced by reactive oxygen species. Bee venom shows a decrease in DNA damage compared with irradiated samples. Parameters of Fpg-modified comet assay are statistically different from controls, making this assay more sensitive and suggesting that oxidative stress is a possible mechanism of DNA damage induction. Bee venom is demonstrated to have a radioprotective effect against basal and oxidative DNA damage. Furthermore, bee venom is not genotoxic and does not produce oxidative damage in the low concentrations used in this study.

摘要

本研究旨在探讨蜂毒对915兆赫微波辐射(比吸收率为0.6瓦/千克)诱导的Wistar大鼠DNA损伤的辐射防护作用。Wistar大鼠的全血淋巴细胞在照射前4小时和照射前即刻用1微克/毫升蜂毒处理。采用标准和甲酰胺嘧啶 - DNA糖基化酶(Fpg)修饰的彗星试验评估活性氧产生的基础DNA损伤和氧化性DNA损伤。与照射样本相比,蜂毒使DNA损伤减少。Fpg修饰的彗星试验参数与对照组有统计学差异,使该试验更敏感,并表明氧化应激是DNA损伤诱导的一种可能机制。已证明蜂毒对基础DNA损伤和氧化性DNA损伤具有辐射防护作用。此外,在本研究使用的低浓度下,蜂毒没有遗传毒性且不会产生氧化损伤。

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