Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt.
Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Würzburg, Germany.
Nat Prod Res. 2022 Mar;36(5):1375-1379. doi: 10.1080/14786419.2021.1873982. Epub 2021 Jan 25.
The chemical profiling of the main phytoconstituents of total ethanolic extract (TEE) and its different fractions of leaves was dereplicated using liquid chromatography-high resolution-electrospray ionisation-mass spectrometry (LC-HR-ESI-MS), revealed the presence of various classes of secondary metabolites; eight phenylethanoids, two flavonoidal glycosides and two iridoids. Moreover, the hepatoprotective and nephroprotective activities of the TEE and its different fractions were investigated in carbon tetrachloride (CCl)-intoxicated rats and were compared with those of silymarin-treated group, revealing the highest potency of the EtOAc group, followed by the aqueous one in improving the CCl-induced alterations in several biochemical parameters. Besides, EtOAc and aqueous fractions exhibited the most inhibition of CCl-induced inflammatory mediators and improving the changes in the histopathological structures of the liver and kidney. In addition, the EtOAc fraction demonstrated the highest total phenolic content, whereas TEE showed the highest amount of total flavonoid content.[Formula: see text].
采用液相色谱-高分辨电喷雾离子化-质谱联用(LC-HR-ESI-MS)技术对总乙醇提取物(TEE)及其叶部分的不同馏分中的主要植物化学成分进行了化学特征分析,揭示了存在各种类型的次生代谢产物;八种苯乙醇苷、两种黄酮苷和两种环烯醚萜。此外,研究了 TEE 及其不同馏分对四氯化碳(CCl)中毒大鼠的肝保护和肾保护作用,并与水飞蓟素处理组进行了比较,结果表明,乙酸乙酯组的效果最高,其次是水组,可改善 CCl 引起的几种生化参数的改变。此外,乙酸乙酯和水馏分显示出对 CCl 诱导的炎症介质的最强抑制作用,并改善了肝和肾组织学结构的变化。此外,乙酸乙酯馏分表现出最高的总酚含量,而 TEE 则表现出最高的总黄酮含量。