Faculté des Sciences de Bizerte, Laboratoire de Physiologie Intégrée, Jarzouna, Bizerte 7021, Tunisia; Institut Préparatoire aux Etudes Scientifiques et Techniques, Unité de Recherche Physico-Chimie-Moléculaire, La Marsa, Tunisia.
Environ Toxicol Pharmacol. 2013 Nov;36(3):826-34. doi: 10.1016/j.etap.2013.07.013. Epub 2013 Aug 3.
We investigated the effect of olive leaves extract administration on glucose metabolism and oxidative response in liver and kidneys of rats exposed to radio frequency (RF). The exposure of rats to RF (2.45 GHz, 1h/day during 21 consecutive days) induced a diabetes-like status. Moreover, RF decreased the activities of glutathione peroxidase (GPx, -33.33% and -49.40%) catalase (CAT, -43.39% and -39.62%) and the superoxide dismutase (SOD, -59.29% and -68.53%) and groups thiol amount (-62.68% and -34.85%), respectively in liver and kidneys. Indeed, exposure to RF increased the malondialdehyde (MDA, 29.69% and 51.35%) concentration respectively in liver and kidneys. Olive leaves extract administration (100 mg/kg, ip) in RF-exposed rats prevented glucose metabolism disruption and restored the activities of GPx, CAT and SOD and thiol group amount in liver and kidneys. Moreover, olive leave extract administration was able to bring down the elevated levels of MDA in liver but not in kidneys. Our investigations suggested that RF exposure induced a diabetes-like status through alteration of oxidative response. Olive leaves extract was able to correct glucose metabolism disorder by minimizing oxidative stress induced by RF in rat tissues.
我们研究了橄榄油提取物对暴露于射频(RF)的大鼠肝脏和肾脏葡萄糖代谢和氧化应激的影响。大鼠暴露于 RF(2.45GHz,连续 21 天每天 1 小时)会导致类似糖尿病的状态。此外,RF 降低了肝脏和肾脏中谷胱甘肽过氧化物酶(GPx,分别降低了-33.33%和-49.40%)、过氧化氢酶(CAT,分别降低了-43.39%和-39.62%)和超氧化物歧化酶(SOD,分别降低了-59.29%和-68.53%)的活性以及硫醇含量(分别降低了-62.68%和-34.85%)。事实上,RF 暴露分别增加了肝脏和肾脏中丙二醛(MDA,分别增加了 29.69%和 51.35%)的浓度。橄榄油提取物(100mg/kg,ip)在 RF 暴露大鼠中可防止葡萄糖代谢紊乱,并恢复肝脏和肾脏中 GPx、CAT 和 SOD 的活性以及硫醇含量。此外,橄榄油提取物能够降低肝脏中升高的 MDA 水平,但不能降低肾脏中的 MDA 水平。我们的研究表明,RF 暴露通过改变氧化应激引起类似糖尿病的状态。橄榄油提取物能够通过减轻 RF 对大鼠组织诱导的氧化应激来纠正葡萄糖代谢紊乱。