古柯二醇通过恢复大鼠大脑行为、分子、神经化学和形态学改变,改善溴化乙锭诱导的实验性多发性硬化症模型。
Guggulsterone ameliorates ethidium bromide-induced experimental model of multiple sclerosis via restoration of behavioral, molecular, neurochemical and morphological alterations in rat brain.
机构信息
Neuropharmacology Division, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India.
出版信息
Metab Brain Dis. 2021 Jun;36(5):911-925. doi: 10.1007/s11011-021-00691-x. Epub 2021 Feb 26.
Multiple Sclerosis (MS) is a progressive neurodegenerative disease with clinical signs of neuroinflammation and the central nervous system's demyelination. Numerous studies have identified the role of the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) overexpression and the low level of peroxisome proliferator-activated receptor-gamma (PPAR-γ) in MS pathogenesis. Guggulsterone (GST), an active component derived from 'Commiphora Mukul,' has been used to treat various diseases. Traditional uses indicate that GST is a suitable agent for anti-inflammatory action. Therefore, we assessed the therapeutic potential of GST (30 and 60 mg/kg) in ethidium bromide (EB) induced demyelination in experimental rats and investigated the molecular mechanism by modulating the JAK/STAT and PPAR-γ receptor signaling. Wistar rats were randomly divided into six groups (n = 6). EB (0.1%/10 μl) was injected selectively in the intracerebropeduncle (ICP) region for seven days to cause MS-like manifestations. The present study reveals that long-term administration of GST for 28 days has a neuroprotective effect by improving behavioral deficits (spatial cognition memory, grip, and motor coordination) associated with lower STAT-3 levels. While elevating PPAR-γ and myelin basic protein levels in rat brains are consistent with the functioning of both signaling pathways. Also, GST modulates the neurotransmitter level by increasing Ach, dopamine, serotonin and by reducing glutamate. Moreover, GST ameliorates inflammatory cytokines (TNF, IL-1β), and oxidative stress markers (AchE, SOD, catalase, MDA, GSH, nitrite). In addition, GST prevented apoptosis, as demonstrated by the reduction of caspase-3 and Bax. Simultaneously, Bcl-2 elevation and the restoration of gross morphology alterations are also recovered by long-term GST treatment. Therefore, it can be concluded that GST may be a potential alternative drug candidate for MS-related motor neuron dysfunctions.
多发性硬化症(MS)是一种进行性神经退行性疾病,其临床特征为神经炎症和中枢神经系统脱髓鞘。大量研究已经确定了 Janus 激酶(JAK)/信号转导和转录激活因子(STAT)过度表达和过氧化物酶体增殖物激活受体-γ(PPAR-γ)水平降低在 MS 发病机制中的作用。古卡斯特酮(GST),一种源自“古卡木”的活性成分,已被用于治疗各种疾病。传统用途表明,GST 是一种适合抗炎作用的药物。因此,我们评估了 GST(30 和 60mg/kg)在实验大鼠中溴化乙锭(EB)诱导的脱髓鞘中的治疗潜力,并通过调节 JAK/STAT 和 PPAR-γ 受体信号来研究其分子机制。Wistar 大鼠随机分为六组(n=6)。EB(0.1%/10μl)选择性注入脑桥被盖(ICP)区域七天以引起类似 MS 的表现。本研究表明,GST 长期给药 28 天可通过改善与 STAT-3 水平降低相关的行为缺陷(空间认知记忆、握力和运动协调)发挥神经保护作用。同时,提高大鼠大脑中 PPAR-γ 和髓鞘碱性蛋白水平与两种信号通路的功能一致。此外,GST 通过增加 Ach、多巴胺、血清素和减少谷氨酸来调节神经递质水平。此外,GST 可改善炎症细胞因子(TNF、IL-1β)和氧化应激标志物(AchE、SOD、过氧化氢酶、MDA、GSH、亚硝酸盐)。此外,GST 可通过降低 caspase-3 和 Bax 来减轻细胞凋亡。同时,长期 GST 治疗还可恢复 Bax 升高和大体形态改变的恢复。因此,可以得出结论,GST 可能是一种治疗与 MS 相关运动神经元功能障碍的潜在替代药物候选物。