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In silico, in vitro and in vivo studies indicate resveratrol analogue as a potential alternative for neuroinflammatory disorders
Life Sciences ( IF 5.2 ) Pub Date : 2020-03-10 , DOI: 10.1016/j.lfs.2020.117538
Pollyana Mendonça de Assis 1 , Amanda Fávero 1 , Jaíne Ferrareis Menegasso 2 , Raissa Soares Meinel 3 , Gabriel Macedo Marion 4 , Vinicius Schmitz Pereira Nunes 4 , Priscila Vanessa Zabala Capriles Goliatt 4 , Adilson David da Silva 3 , Rafael Cypriano Dutra 2 , Nádia Rezende Barbosa Raposo 1
Affiliation  

Inflammaging is known as an imbalance between pro-inflammatory and anti-inflammatory immune mechanisms, being related to the onset of neurological disorders, such as major depression and Alzheimer's disease. Considering the known disadvantages regarding the FDA approved drug to manage such illnesses, resveratrol emerges as a natural drug candidate, despite its low bioavailability. In this study, resveratrol analogues were evaluated for their capacity of inhibiting acetylcholinesterase , , and . Molecular docking simulations pointed out RSVA1 and RSVA6 as potent inhibitors, even more than resveratrol. Ellman's assay demonstrated RSVA6 as capable of inhibiting 92.4% of the enzyme activity. Further, male Swiss mice were pretreated with RSVA6 (100 mg kg) 60 min before receiving scopolamine (1 mg kg). The Novel Recognition Object (NOR), Object Location (OLT), and Buried Pellet tests (BPL) demonstrated an RSVA6 neuroprotective effect. In the second round of tests, mice received a single intraperitoneal injection of lipopolysaccharide (0.5 mg kg) 24 h before treatment with RSVA6 (1, 10, and 100 mg kg). The Open Field (OFT), Tail Suspension (TST), and Splash tests (ST) were evaluated. LPS had no significant effect on the crossing and rearing number, indicating an association between the immobility time and anhedonia observed in the TST and ST, respectively, with depressive-like behavior. RSVA6 significantly reduced the depressive-like behavior triggered by LPS in the TST and ST. Altogether, our data suggest RSVA6 as a potential drug candidate for the treatment of neuroinflammatory conditions.

中文翻译:


计算机、体外和体内研究表明白藜芦醇类似物是神经炎症性疾病的潜在替代品



炎症被认为是促炎和抗炎免疫机制之间的不平衡,与神经系统疾病(如重度抑郁症和阿尔茨海默病)的发病有关。考虑到 FDA 批准的药物治疗此类疾病的已知缺点,白藜芦醇成为一种天然候选药物,尽管其生物利用度较低。在这项研究中,评估了白藜芦醇类似物抑制乙酰胆碱酯酶、、和的能力。分子对接模拟指出 RSVA1 和 RSVA6 是有效的抑制剂,甚至比白藜芦醇更有效。 Ellman 的测定证明 RSVA6 能够抑制 92.4% 的酶活性。此外,雄性瑞士小鼠在接受东莨菪碱(1 mg kg)之前用 RSVA6(100 mg kg)预处理 60 分钟。新颖的物体识别 (NOR)、物体定位 (OLT) 和掩埋颗粒测试 (BPL) 证明了 RSVA6 的神经保护作用。在第二轮测试中,小鼠在接受 RSVA6(1、10 和 100 mg·kg)治疗前 24 小时接受单次腹腔注射脂多糖(0.5 mg·kg)。评估了旷场(OFT)、尾部悬挂(TST)和飞溅测试(ST)。 LPS 对交叉和站立次数没有显着影响,表明分别在 TST 和 ST 中观察到的不动时间和快感缺乏与抑郁样行为之间存在关联。 RSVA6 显着减少了 TST 和 ST 中 LPS 引发的抑郁样行为。总而言之,我们的数据表明 RSVA6 作为治疗神经炎症性疾病的潜在候选药物。
更新日期:2020-03-10
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