Unveiling the antiophidian potential of epicatechin and isoquercetin from Tapinanthus globiferus growing on Acacia nilotica: An in silico and in vitro studies

Amina Jega Yusuf , Musa Sadiq , Aisha Iliyasu Bugaje , Mustapha Salihu , Abimbola M. Oluwajembola , Olayinka S. Okoh
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Abstract

Traditional medicine offers potential therapeutic options to myriad form of diseases that appear incurable. This study investigated the inhibitory potential of Epicatechin and Isoquercetin isolated from Tapinanthus globiferus growing on Acacia nilotica against Naja nigricollis phospholipase A2 (PLA2) enzyme. In vitro PLA2 activity was assayed using an acidimetric method. In silico analysis of docking scores and pharmacokinetic properties were performed using established softwares (Autodock Vina, SwissADME, ProTox-II). Both Epicatechin and Isoquercetin exhibited concentration-dependent inhibition of PLA2 enzyme activity, with Epicatechin demonstrating a more potent effect (inhibition range: 34.40 – 63.70 %) compared to Isoquercetin (25.42 – 57.18 %) at tested concentrations. In silico docking scores indicated favorable binding affinities for both compounds (-8.0 and −8.1 kcal/mol for Epicatechin and Isoquercetin, respectively). Toxicity studies predicted a relatively low hazard profile for both compounds (LD50 > 5000 mg/kg). ADME/Tox analysis suggested better lead-like properties for Epicatechin. In conclusion, Epicatechin and Isoquercetin isolated from T. globiferus exhibited promising anti-snake venom activity against N. nigricollis PLA2 enzyme in both in vitro and in silico analyses. Epicatechin demonstrated superior enzyme inhibitory activity and favorable pharmacokinetic properties, warranting further investigation for potential development as a snakebite therapeutic.
揭示生长在尼罗金合欢上的球Tapinanthus globiferus中表儿茶素和异槲皮素的抗蛇毒作用:一项体内和体外研究
传统医学为无数似乎无法治愈的疾病提供了潜在的治疗选择。本研究研究了生长在尼罗刺槐上的Tapinanthus globiferus分离的表儿茶素和异槲皮素对黑鬼病磷脂酶A2 (PLA2)酶的抑制作用。用酸法测定PLA2的体外活性。使用已建立的软件(Autodock Vina, SwissADME, ProTox-II)进行对接评分和药代动力学特性的计算机分析。表儿茶素和异槲皮素都表现出浓度依赖性的PLA2酶活性抑制,在测试浓度下,表儿茶素表现出更强的抑制作用(抑制范围:34.40 - 63.70 %),而异槲皮素(25.42 - 57.18 %)。硅对接分数表明,这两种化合物的结合亲和力良好(表儿茶素和异槲皮素分别为-8.0和- 8.1 kcal/mol)。毒性研究预测这两种化合物的危害相对较低(LD50 >; 5000毫克/公斤)。ADME/Tox分析表明表儿茶素具有更好的类铅特性。综上所述,从globiferus中分离得到的表儿茶素和异槲皮素在体外和计算机实验中均表现出良好的抗黑僵菌PLA2酶的活性。表儿茶素表现出优异的酶抑制活性和良好的药代动力学特性,值得进一步研究其作为蛇咬伤治疗药物的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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