Differential dose-dependent effects of prednisolone on shedding of endothelial adhesion molecules during human endotoxemia

详细信息    查看全文

• 作者：Lucienne C. Lemaire ; Martijn D. de Kruif ; Ida A. Giebelen ; Marieke A.D. van Zoelen ; Cornelis van’ ; t Veer ; Tom van der Poll
• 关键词：Corticosteroids ; Inflammation ; Lipopolysaccharide ; VCAM-1 ; ICAM-1 ; E-selectin ; Endothelium ; Adhesion
• 刊名：Immunology Letters
• 出版年：2008
• 出版时间：22 December 2008
• 年：2008
• 卷：121
• 期：2
• 页码：93-96
• 全文大小：293 K

文摘

Low dose prednisolone was shown to be beneficial in the treatment of the Acute respiratory distress syndrome (ARDS) and septic shock. One corticosteroid-induced effect, postulated to mediate corticosteroid-induced anti-inflammatory effects, is decreased expression of adhesion molecules on endothelial cells, thereby preventing leukocyte recruitment at inflammatory sites. The current study aimed to investigate the effect of increasing doses of prednisolone on the release of soluble adhesion molecules in healthy volunteers challenged with endotoxin. Therefore, 32 healthy, male volunteers received prednisolone orally at doses of 0 mg, 3 mg, 10 mg or 30 mg at 2 h before injection of endotoxin prepared from Escherichia coli (4 ng/kg) and levels of soluble E-selectin (sE-selectin), soluble VCAM-1 (sVCAM-1) and soluble ICAM-1 (sICAM-1) were measured. Levels of all markers were increased after induction of endotoxemia. Levels of sE-selectin were inhibited by a dose of 3 mg prednisolone and levels of sVCAM-1 were decreased after a dose of 10 mg. Maximal inhibition of both sE-selectin and sVCAM-1 levels was achieved by the highest dose of prednisolone 30 mg. Remarkably, prednisolone 3 mg potentiated endotoxin-induced sVCAM-1 release. Levels of sICAM-1 were not affected by prednisolone. Together, the data suggest that prednisolone differentially and dose-dependently influences the release of soluble endothelial adhesion molecules during human endotoxemia.