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(Arteriosclerosis, Thrombosis, and Vascular Biology. 2002;22:1598.)
© 2002 American Heart Association, Inc.

Vascular Biology

Administration of Recombinant P-Selectin Glycoprotein Ligand Fc Fusion Protein Suppresses Inflammation and Neointimal Formation in Zucker Diabetic Rat Model

Zhongmin Zhou; Marc S. Penn; Farhad Forudi; Xiaorong Zhou; Khaldoun Tarakji; Eric J. Topol; A. Michael Lincoff; Kai Wang

From the Department of Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio.

Correspondence to Kai Wang, MD, PhD, Department of Cardiology F25, The Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH 44195. E-mail wangk{at}ccf.org

Objective— P-selectin–mediated leukocyte-endothelium and leukocyte-platelet interaction has been reported after vascular injury and has been correlated with neointimal hyperplasia, but its role in neointimal formation after arterial injury in diabetes has not been described.

Methods and Results— Using a Zucker diabetic rat balloon injury model, we examined the role of P-selectin in the vascular inflammatory process and neointimal formation after balloon injury. Immunohistochemistry revealed that P-selectin was intensely expressed and that CD45-positive leukocyte infiltration was significantly increased after arterial injury. A single preprocedural intravenous administration of a recombinant P-selectin–soluble glycoprotein ligand-Ig inhibited CD45-positive leukocyte accumulation and suppressed neointimal formation in the Zucker diabetic rat model.

Conclusions— These results suggest that reduction of P-selectin–mediated leukocyte activation with the use of recombinant P-selectin–soluble glycoprotein ligand-Ig decreases the inflammatory response and limits neointimal formation after balloon injury in diabetes.

Key Words: P-selectin • diabetes mellitus • restenosis • balloon injury

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