蜂王浆(RJ)通过靶向炎症和氧化应激对戊四氮(PTZ)诱导的大鼠癫痫发作的神经保护作用。
Neuroprotective effects of Royal Jelly (RJ) against pentylenetetrazole (PTZ)-induced seizures in rats by targeting inflammation and oxidative stress.
机构信息
Department of Physiology, School of Paramedical Sciences, Dezful University of Medical Sciences, Dezful, Iran.
Department of Physiology, School of Paramedical Sciences, Dezful University of Medical Sciences, Dezful, Iran.
出版信息
J Chem Neuroanat. 2023 Apr;129:102255. doi: 10.1016/j.jchemneu.2023.102255. Epub 2023 Mar 5.
Epilepsy is a chronic neurological condition in which inflammation and oxidative stress play a key role in the pathogenesis. Recently, several studies have suggested that Royal Jelly (RJ) has antioxidant effects. Nevertheless, there is no evidence of its effectiveness against epilepsy. Here, we evaluated its neuroprotective effects at different doses (100 and 200 mg/kg) against pentylenetetrazole (PTZ)-induced seizures. Fifty male Wistar rats were randomly divided into five groups: control, PTZ, RJ100 + PTZ, RJ200 + PTZ and RJ100. In order to establish epilepsy model, 45 mg/kg of PTZ was injected intraperitoneally for 10 consecutive days. Seizure parameters were graded based on Racine's 7-point classification. Elevated-plus maze, Y maze and shuttle box tests were carried out to assess anxiety-like behavior, short-term memory, and passive avoidance memory, respectively. We used ELISA technique to measure the expression of the pro-inflammatory cytokines and oxidative stress factors. Also, neuronal loss in the hippocampal CA3 region was determined using Nissl staining. Our findings showed that PTZ-treated rats had more seizure intensity, anxiety-like behavior, memory dysfunction, higher levels of TNF-α, IL-1β, and oxidative markers. RJ could allay seizure severity and duration. It also improved memory function as well as anxiety level. In terms of biochemical assessment, RJ gave rise to a significant decrease in the level of IL-1β, TNF-α and MDA and it restored the activities of GPX and SOD enzymes. Hence, our study shows that RJ contains anti-inflammatory and antioxidative effects which contribute to less neuronal damage in the PTZ-induced epilepsy model.
癫痫是一种慢性神经系统疾病,其中炎症和氧化应激在发病机制中起关键作用。最近,几项研究表明蜂王浆(RJ)具有抗氧化作用。然而,目前还没有证据表明它对癫痫有效。在这里,我们评估了不同剂量(100 和 200 mg/kg)的 RJ 对戊四氮(PTZ)诱导的癫痫发作的神经保护作用。50 只雄性 Wistar 大鼠随机分为 5 组:对照组、PTZ 组、RJ100+PTZ 组、RJ200+PTZ 组和 RJ100 组。为了建立癫痫模型,连续 10 天每天腹腔注射 45mg/kg 的 PTZ。根据 Racine 的 7 分分类法对癫痫发作参数进行分级。高架十字迷宫、Y 迷宫和穿梭箱测试分别用于评估焦虑样行为、短期记忆和被动回避记忆。我们使用 ELISA 技术测量促炎细胞因子和氧化应激因子的表达。此外,通过尼氏染色测定海马 CA3 区神经元丢失。我们的研究结果表明,PTZ 处理的大鼠癫痫发作强度更高,焦虑样行为更多,记忆功能障碍,TNF-α、IL-1β 和氧化标志物水平更高。RJ 可以减轻癫痫发作的严重程度和持续时间。它还改善了记忆功能和焦虑水平。在生化评估方面,RJ 导致 IL-1β、TNF-α 和 MDA 水平显著降低,并恢复了 GPX 和 SOD 酶的活性。因此,我们的研究表明,RJ 具有抗炎和抗氧化作用,可减少 PTZ 诱导的癫痫模型中的神经元损伤。