PMID: 8600968Mar 1, 1996Paper

Prevention of intimal hyperplasia by irradiation. An experimental study in rabbits

Acta Radiologica
T HiraiM Takahashi

Abstract

This experimental study was designed to investigate the effect of irradiation in prevention of intimal hyperplasia. Twenty rabbits were divided into 4 groups, which were irradiated with 2, 5, 10 and 20 Gy, respectively. The intima of both femoral arteries was injured by air-drying, and irradiation was performed on the unilateral side. The contralateral+ femoral artery served as a control. Angiograms as well as histologic specimens were obtained 1 month later. Marked intimal hyperplasia was observed in all control sites. There were no significant differences in thickness of intimal hyperplasia between irradiated and control sites in groups irradiated with 2 and 5 Gy. However, in the 10-Gy- and 20-Gy-irradiated groups, intimal hyperplasia of the irradiated site was significantly suppressed. Medial thinning and dilation of the lumen were observed in the 20-Gy-irradiated group. Radiation may prevent intimal hyperplasia. Further investigation of the optimal dose, timing of irradiation, and long-term patency of irradiated vessels may be needed.

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Citations

Apr 4, 2001·Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions·G L KałuzaA E Raizner
Jul 27, 1999·Acta Oncologica·P RubinP Okunieff
May 10, 2000·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·M S LemsonP J Kitslaar

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