Protective effects of peoniflorin against hydrogen peroxide-induced oxidative stress in human umbilical vein endothelial cells

Abstract

Peoniflorin (PF), extracted from the root of Paeonia lactiflora Pall., has been reported to have anti-inflammation and antioxidant effects in several animal models. Herein, we investigated the protective effects of PF against hydrogen peroxide (H(2)O(2))-induced oxidative damage in human umbilical vein endothelial cells (HUVECs). HUVECs were treated by H(2)O(2) (240 µmol/L) with or without PF. PF significantly increased the percent cell viability of HUVECs injured by H(2)O(2) using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. By flow cytometric analysis, PF markedly attenuated H(2)O(2)-induced apoptosis and intracellular reactive oxygen species production. In addition, PF also displayed a dose-dependent reduction of lactate dehydrogenase leakage, malondialdehyde formation, and caspase-3 proteolytic activities in H(2)O(2)-treated cells, which was accompanied with a restoration of the activities of endogenous antioxidants, including total superoxide dismutase and glutathione peroxidase. Finally, Western blot data revealed that H(2)O(2) upregulated phosphorylation of extracellular signal-regulated kinase 1/2 in HUVECs, which was almost completely reversed by PF. Taken together, our data provide the first evidence that PF has a protective ability against oxidative damage in HUVECs. PF may be a candidate medicine for the treatment of vascular diseases associated with oxidative stress.

Screening the anti-gout traditional herbs from TCM using an in vitro method

“…Besides, glycosides are the main ingredients of Paeoniae Radix Rubra. Paeoniflorin is a potent anti-inflammatory agent that can ameliorate the leukocyte infiltrates and adhesion molecules expression [38,39]. These data suggest that most herbs from TCM have a better therapeutic effect on inflammation.…”

Salidroside Inhibits Endogenous Hydrogen Peroxide Induced Cytotoxicity of Endothelial Cells

“…15,16) Thus, protection of endothelial cells from ROS-induced injury may therefore provide beneficial therapeutical intervention for successful treatment of cardiovascular diseases. 17) Salidroside, a major active ingredient exsiting naturally in R. rosea L., has been reported to be a strong antioxidant. In the present study, we demonstrated for the first time that salidroside was capable of protecting EVC-304 cells from oxidative stress and the accompanied apoptosis caused by endogenous H 2 O 2 .…”

Paeoniflorin ameliorates ischemic neuronal damage in vitro via adenosine A1 receptor-mediated transactivation of epidermal growth factor receptor

“…PF has many biological activities and has been shown to be anti-inflammatory [2][3][4] , analgesic [5] , and an antioxidant [6,7] . Furthermore, PF is a potential neuroprotective agent.…”