Structural characterization of Ginkgo biloba L. leaves cyclopeptides and anti-inflammatory potency evaluation in human umbilical vein endothelial cells

2020 ◽  
Vol 39 ◽  
pp. 12-18
Author(s):  
Xianghui Kong ◽  
Qingwei Liu ◽  
Man Zheng ◽  
Jie Liu ◽  
Cuicui Zhang ◽  
...  
1982 ◽  
Vol 47 (02) ◽  
pp. 128-131 ◽  
Author(s):  
F Esnard ◽  
E Dupuy ◽  
A M Dosne ◽  
E Bodevin

SummaryA preliminary characterization of a fibrinolytic inhibitor released by human umbilical vein endothelial cells in primary culture is reported. This molecule of Mr comprised between 2 × 105 and 106 and of μ2 mobility precipitates at 43% ammonium sulphate saturation and is totally adsorbed on Concanavalin A Sepharose 4 B. A possible relationship with a macroglobulins is discussed.


2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Yuzhong Zheng ◽  
Guizhong Xin ◽  
Guowei Gong ◽  
Tina TX Dong ◽  
Ping Li ◽  
...  

Background. Guizhi Fuling capsule (GFC), a well-known formula composed of five medicinal herbs, is commonly prescribed to treat primary dysmenorrhea, as well as to achieve good clinical efficacy in China. However, the active components of GFC have not been identified. Here, the anti-inflammatory functions of GFC, as well as its major ingredients, were evaluated in human umbilical vein endothelial cells (HUVECs). Methods. Lipopolysaccharide (LPS) was used in HUVECs to imitate the cellular inflammation. Then, GFC-triggered mRNA expressions of cyclooxygenase-1 (COX-1) and COX-2 were determined by real-time PCR, while the expression of COX-2 protein was revealed by western blotting. Besides, nine components of GFC were evaluated for their contribution value in the anti-dysmenorrhea effects Results. The application of GFC downregulated the mRNA expressions of COX-1 and COX-2 mRNAs. Nine major components of GFC were tested in the inflammatory system, and three compounds, including paeoniflorin, benzoylpaeoniflorin, and amygdalin, exhibited robust activation in HUVECs. The combination of paeoniflorin, benzoylpaeoniflorin, and amygdalin showed over 80% of the anti-inflammatory activation. Conclusion. Our study supports that GFC plays a promising role in anti-dysmenorrhea function by decreasing COXs’ expression. Besides, paeoniflorin, benzoylpaeoniflorin, and amygdalin could be considered as major regulators for the anti-dysmenorrhea effects of GFC.


2014 ◽  
Vol 884-885 ◽  
pp. 446-449
Author(s):  
Fu Jiang Chu ◽  
Hong Yan Ma ◽  
Xiao Bao Jin ◽  
Jia Yong Zhu

House fly maggot, Musca domestica (Linnaeus) (Diptera: Muscidae) is one of the traditional Chinese medicine (TCM). In our earlier studies, the anti-inflammatory and anti-atherosclerotic functions of the housefly maggot have been found and also the anti-inflammatory effective parts have been acquired. In this study, the effect of housefly maggot anti-inflammatory parts on proliferation and migration of TNF-α-stimulated human umbilical vein endothelial cells (HUVEC) were investigated. And the results showed that the proliferation index and the migration rates of HUVEC which stimulated by TNF-α were decreased significantly in housefly maggot anti-inflammatory parts treatment group. And also the secretion of vascular endothelial growth factor (VEGF) was decreased too compared with only TNF-α treatment group. Based on the above, the housefly maggot anti-inflammatory parts could regulate the endothelial cell dysfunction through decreasing cell proliferation and migration and a reduction in VEGF expression might plays a key role in this process.


2013 ◽  
Vol 114 (2) ◽  
pp. 274-285 ◽  
Author(s):  
Hsiu-Chung Ou ◽  
Yueh-Ling Hsieh ◽  
Nae-Cherng Yang ◽  
Kun-Ling Tsai ◽  
Kai-Ling Chen ◽  
...  

Atherosclerosis is a complex inflammatory arterial disease, and oxidized low-density lipoprotein (oxLDL) is directly associated with chronic vascular inflammation. Previous studies have shown that Ginkgo biloba extract (GbE) acts as a therapeutic agent for neurological and cardiovascular disorders. However, the mechanisms mediating the actions of GbE are still largely unknown. In the present study, we tested the hypothesis that GbE protects against oxLDL-induced endothelial dysfunction via an AMP-activated protein kinase (AMPK)-dependent mechanism. Human umbilical vein endothelial cells were treated with GbE, followed by oxLDL, for indicated time periods. Results from Western blot showed that GbE inhibited the membrane translocation of the NADPH oxidase subunits p47phox and Rac-1 and attenuated the increase in protein expression of membrane subunits gp91 and p22phox caused by oxLDL-induced AMPK dephosphorylation and subsequent PKC activation. AMPK-α1-specific small interfering RNA-transfected cells that had been exposed to GbE followed by oxLDL revealed elevated levels of PKC and p47phox. In addition, exposure to oxLDL resulted in reduced AMPK-mediated Akt/endothelial nitric oxide (NO) synthase signaling and the induction of phosphorylation of p38 mitogen-activated protein kinase, which, in turn, activated NF-κB-mediated inflammatory responses, such as the release of interleukin-8, the expression of the adhesion molecule, and the adherence of monocytic cells to human umbilical vein endothelial cells. Furthermore, oxLDL upregulated the expression of inducible NO synthase, thereby augmenting the formation of NO and protein nitrosylation. Pretreatment with GbE, however, exerted significant cytoprotective effects in a dose-dependent manner. Results from this study may provide insight into a possible molecular mechanism by which GbE protects against oxLDL-induced endothelial dysfunction.


2008 ◽  
Vol 198 (1) ◽  
pp. 22-28 ◽  
Author(s):  
Silvana Cianchetti ◽  
Alessandra Del Fiorentino ◽  
Renato Colognato ◽  
Rossella Di Stefano ◽  
Ferdinando Franzoni ◽  
...  

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