title: Ginkgolide B suppresses intercellular adhesion molecule-1 expression via blocking nuclear factor-kappaB activation in human vascular endothelial cells stimulated by oxidized low-density lipoprotein.
abstract: Atherosclerosis is a complex inflammatory arterial disease. Oxidized low-density lipoprotein (ox-LDL) is directly associated with chronic vascular inflammation. In the current study, we tested the hypothesis that ginkgolide B, a component of traditional Chinese herbal medicine for heart disorder, may affect ox-LDL-induced inflammatory responses in human umbilical vein endothelial cells (HUVECs). The results showed that the ox-LDL treatment caused a significantly increase in the expression of intercellular adhesion molecule-1 (ICAM-1) in HUVECs, which was associated with a dramatic augmentation in phosphorylation of IkappaB and relocation of nuclear factor-kappaB (NF-kappaB) into the nuclei. Interestingly, the ox-LDL-induced ICAM-1 expression and NF-kappaB relocation could be attenuated by addition of ginkgolide B. Moreover, ginkgolide B significantly reduces ox-LDL-induced generation of reactive oxygen species (ROS). In conclusion, ginkgolide B may decrease inflammatory responses induced by ox-LDL via blocking NF-kappaB signaling and inhibiting ROS generation in HUVECs.
authors.affiliation: Beijing Institute of Geriatrics, Beijing Hospital and Key Laboratory of Geriatrics Ministry of Health, Beijing, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Li
authors.forename: Beidong
authors.initials: B
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Wu
authors.forename: Li
authors.initials: L
authors.lastname: Bao
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.forename: Ruomei
authors.initials: R
authors.lastname: Qi
mesh_terms: D002478:Cells, Cultured; D042783:Endothelial Cells / Q000187:drug effects* / Q000378:metabolism; D046934:Ginkgolides / Q000494:pharmacology*; D006801:Humans; D018799:Intercellular Adhesion Molecule-1 / Q000378:metabolism*; D007783:Lactones / Q000494:pharmacology*; D008077:Lipoproteins, LDL / Q000494:pharmacology*; D016328:NF-kappa B / Q000378:metabolism*; D010936:Plant Extracts / Q000494:pharmacology*
chemical_list: D046934:Ginkgolides; D007783:Lactones; D008077:Lipoproteins, LDL; D016328:NF-kappa B; D010936:Plant Extracts; C099252:oxidized low density lipoprotein; D018799:Intercellular Adhesion Molecule-1; C045856:ginkgolide B