Leonurus sibiricus herb extract suppresses oxidative stress and ameliorates hypercholesterolemia in C57BL/6 mice and TNF-alpha induced expression of adhesion molecules and lectin-like oxidized LDL receptor-1 in human umbilical vein endothelial cells.
In Leonurus sibiricus herb extract (LHE)-supplemented animals, plasma cholesterol decreased and high-density lipoprotein-cholesterol increased, resulting in a lowered atherogenic index. The plasma trolox equivalent antioxidant capacity, levels of hepatic thiobarbituric acid-reactive substances, and protein carbonyl values decreased significantly in LHE-supplemented mice (p<0.05), whereas the hepatic antioxidant indicators were all significantly elevated (p<0.05). In human umbilical vein endothelial cells stimulated with tumor necrosis factor alpha, LHE significantly suppressed intracellular reactive oxygen species, LOX-1, and adhesion molecules. LHE supplementation may modulate the lipoprotein composition and attenuate oxidative stress by elevated antioxidant processes, thus suppressing the activation of inflammatory mediators. This is a possible mechanism of the anti-atherogenic effect.
Department of Diagnostics and Cardiovascular Medical Research Center, College of Oriental Medicine, Dongguk University, Gyeong-Ju, Gyeongbuk, Republic of Korea.
Min-Ja
MJ
Lee
Hye-Sook
HS
Lee
Sun-Dong
SD
Park
Hyung-In
HI
Moon
Won-Hwan
WH
Park
D000818:Animals; D015815:Cell Adhesion Molecules / Q000378:metabolism*; D002478:Cells, Cultured; D042783:Endothelial Cells / Q000187:drug effects*; D005260:Female; D006801:Humans; D006937:Hypercholesterolemia / Q000378:metabolism*; D037102:Lectins / Q000378:metabolism; D031332:Leonurus / Q000378:metabolism*; D051379:Mice; D018384:Oxidative Stress / Q000187:drug effects*; D010936:Plant Extracts / Q000494:pharmacology*; D051131:Receptors, Oxidized LDL / Q000378:metabolism*; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism*; D014471:Umbilical Veins / Q000166:cytology
D015815:Cell Adhesion Molecules; D037102:Lectins; D010936:Plant Extracts; D051131:Receptors, Oxidized LDL; D014409:Tumor Necrosis Factor-alpha