Salau Veronica F, Erukainure Ochuko L, Olofinsan Kolawole A, Schoeman Recardia L S, Matsabisa Motlalepula G
Department of Pharmacology, University of the Free State, Bloemfontein, South Africa.
Department of Biochemistry, University of KwaZulu-Natal, Durban, South Africa.
Front Pharmacol. 2023 Aug 7;14:1221769. doi: 10.3389/fphar.2023.1221769. eCollection 2023.
Hepatic oxidative injury is one of the pathological mechanisms that significantly contributes to the development of several liver diseases. In the present study, the hepatoprotective effect of herbal tea was investigated in Fe- mediated hepatic oxidative injury. Using an experimental approach, hepatic oxidative injury was induced by co-incubating 7 mM FeSO with Chang liver cells that have been pre-incubated with or without different concentrations (15-240 μg/mL) of infusion. Gallic acid and ascorbic acid served as the standard antioxidants. The infusion displayed a reducing antioxidant activity in ferric-reducing antioxidant power (FRAP) assay and a potent scavenging activity on 2,2-diphenyl-2- picrylhydrazyl (DPPH) radical. Pretreatment with infusion significantly elevated the levels of reduced glutathione and non-protein thiol, and the activities of superoxide dismutase (SOD) and catalase, with concomitant decrease in hepatic malondialdehyde levels, acetylcholinesterase, glucose-6-phosphatase, fructose-1,6-bisphosphatase, glycogen phosphorylase and lipase activities. The infusion showed the presence of phytoconstituents such as phenolic compounds, tannins, phenolic glycosides and terpenoids when subjected to liquid chromatography-mass spectrometry analysis. Molecular docking revealed a strong binding affinity of dihydroroseoside and obacunone with both SOD and catalase compared to other phytoconstituents. These results portray a potent antioxidant and hepatoprotective effect of , which may support the local usage of the herbal tea as a prospective therapeutic agent for oxidative stress-related liver diseases.
肝脏氧化损伤是导致多种肝脏疾病发生的重要病理机制之一。在本研究中,研究了凉茶在铁介导的肝脏氧化损伤中的保肝作用。采用实验方法,将7 mM硫酸亚铁与预先用不同浓度(15 - 240 μg/mL)浸液孵育或未孵育的Chang肝细胞共同孵育,诱导肝脏氧化损伤。没食子酸和抗坏血酸作为标准抗氧化剂。浸液在铁还原抗氧化能力(FRAP)测定中表现出还原抗氧化活性,对2,2 - 二苯基 - 2 - 苦基肼(DPPH)自由基具有强大的清除活性。浸液预处理显著提高了还原型谷胱甘肽和非蛋白硫醇的水平,以及超氧化物歧化酶(SOD)和过氧化氢酶的活性,同时肝脏丙二醛水平、乙酰胆碱酯酶、葡萄糖 - 6 - 磷酸酶、果糖 - 1,6 - 二磷酸酶、糖原磷酸化酶和脂肪酶活性降低。液相色谱 - 质谱分析显示浸液中存在酚类化合物、单宁、酚糖苷和萜类等植物成分。分子对接显示,与其他植物成分相比,二氢玫瑰糖苷和奥巴酮与SOD和过氧化氢酶都具有很强的结合亲和力。这些结果表明浸液具有强大的抗氧化和保肝作用,这可能支持将凉茶作为氧化应激相关肝脏疾病的潜在治疗药物在当地使用。