Talom Mabou Symphorien, Kavaye Kandeda Antoine, Claude Bilanda Danielle, Melton Nkengne Steve, Moffo Soffo Gildas, Francois Edzoa Xavier
Department of Animal Biology and Physiology, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
IBRO Neurosci Rep. 2024 Oct 5;17:347-363. doi: 10.1016/j.ibneur.2024.09.007. eCollection 2024 Dec.
In Cameroon, epilepsy is one of the most common neurological diseases. Available anti-epileptic medication, on the other hand, have been associated with pharmacological toxicity and emotional impairment. The identification of a more efficient replacement is critical. Recent research reveals that ferroptosis contributes to the pathophysiology of epilepsy and related anxiety disorders. is a plant with a high neuropharmacological potential, but its mechanisms of action have yet to be understood. The purpose of this study was to determine the effect of ethanolic and aqueous extracts of on the kainate model of epilepsy in mice. The focus was on these extracts' capacity to suppress ferroptosis. Mice were injected with kainate (12 mg/kg, i.p.) to induce epilepsy. After , animals were left for 19 days, which correspond to an epileptogenic period. After the appearance of spontaneous recurrent seizures, mice were treated with distilled water (10 ml/kg, .), levetiracetam (80 mg/kg, ), sodium valproate (300 mg/kg, ), ethanolic extract of (230, 460, 920 mg/kg, ), or an aqueous extract of (460 mg/kg ). These treatments lasted for 14 days. During this period, the number and duration of seizures were recorded. The mice were then subjected to elevated zero-maze and open field tests to assess anxiety-like behavior. At the end, mice were sacrificed and hippocampus, amygdala, and striatum were dissected out for biochemical and histological analyses. The extracts alleviated seizure- and anxiety-like behavior in KA-treated mice. Decreased iron levels, reflected by a decrease in ferritin levels and a increase in transferrin levels, were observed in the hippocampus, striatum and amygdala of the extract-treated group compared to the KA-treated group. In addition, increase in GABA and GSH levels, and a decrease in MDA levels were observed in these groups. Hematoxylin-eosin staining revealed less pronounced neuronal degeneration and a more sustained architecture in the brain region of extract-treated mice. These findings indicated that ethanolic and aqueous extracts of effectively attenuate seizures and anxiety disorders. Probable mechanisms of action include GABAergic, iron, GSH, and MDA modulations.
在喀麦隆,癫痫是最常见的神经疾病之一。另一方面,现有的抗癫痫药物与药物毒性和情绪障碍有关。确定一种更有效的替代药物至关重要。最近的研究表明,铁死亡参与了癫痫及相关焦虑症的病理生理过程。[植物名称]是一种具有高神经药理学潜力的植物,但其作用机制尚不清楚。本研究的目的是确定[植物名称]乙醇提取物和水提取物对小鼠红藻氨酸盐癫痫模型的影响。重点是这些提取物抑制铁死亡的能力。给小鼠注射红藻氨酸盐(12毫克/千克,腹腔注射)以诱发癫痫。[具体时间]后,让动物存活19天,这相当于癫痫发作期。在出现自发性反复癫痫发作后,用蒸馏水(10毫升/千克,[给药途径])、左乙拉西坦(80毫克/千克,[给药途径])、丙戊酸钠(300毫克/千克,[给药途径])、[植物名称]乙醇提取物(230、460、920毫克/千克,[给药途径])或[植物名称]水提取物(460毫克/千克,[给药途径])对小鼠进行治疗。这些治疗持续14天。在此期间,记录癫痫发作的次数和持续时间。然后对小鼠进行高架零迷宫和旷场试验,以评估焦虑样行为。最后,处死小鼠,取出海马体、杏仁核和纹状体进行生化和组织学分析。提取物减轻了经红藻氨酸盐处理小鼠的癫痫发作和焦虑样行为。与经红藻氨酸盐处理的组相比,提取物处理组的海马体、纹状体和杏仁核中铁水平降低,表现为铁蛋白水平降低和转铁蛋白水平升高。此外,这些组中γ-氨基丁酸(GABA)和谷胱甘肽(GSH)水平升高,丙二醛(MDA)水平降低。苏木精-伊红染色显示,提取物处理小鼠脑区的神经元变性不太明显,结构更完整。这些发现表明,[植物名称]乙醇提取物和水提取物可有效减轻癫痫发作和焦虑症。可能的作用机制包括对GABA能、铁、GSH和MDA的调节。