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Purified polysaccharide from Ginkgo biloba leaves inhibits P-selectin-mediated leucocyte adhesion and inflammation

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Aim: To investigate the anti-inflammatory mechanism of the polysaccharides of Ginkgo biloba leaves (PGBL) by inhibiting leucocyte adhesion. Methods: The rough PGBL were isolated and purified. The anti-inflammatory effects of purified PGBL (p-PGBL) were assayed by ear edema induced by xylol and the acute peritonitis model in mice. The effect of p-PGBL on inhibiting the interaction between P-selectin and its ligands was investigated by flow cytometry and flow chamber. Results: p-PGBL could effectively inhibit the acute inflammation in mice and interfere with the adhesion of HL-60 cells, a human leukaemia cell line, or neutrophils to P-selectin in static conditions, as well as the adhesion of neutrophils to Chinese hamster ovary cells expressing human P-selectin and human umbilical vein endothelial cells in flow conditions in a dose-dependant manner. Conclusions: p-PGBL can inhibit the inflammatory process through interfering with the interaction between P-selectin and its ligands.

Keywords: P-selectin; cell adhesion inhibition; inflammation; polysaccharides of Ginkgo biloba leaves

Document Type: Research Article


Affiliations: 1: Department of Cardiology, Second Hospital, Jilin University, Changchun 130041, China 2: Institute of Genetics and Cytology, Northeast Normal University, Changchun 130024, China 3: Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston Texas 77030, USA

Publication date: 2008-04-01

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