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KMID : 0376319900020010153
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Dental Journal of CNU
1990 Volume.2 No. 1 p.153 ~ p.171
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RE-ENDOTHELIZATION OF MICROVASCULAR ANASTOMOSIS IN DIABETIC RAT FEMORAL ARTERY ; A SCANNING ELECTRON MICROSCOPIC STUDY
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Kim Young-Jae
Ryu Sun-Youl
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Abstract
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Recently, Diabetic patients are increasing in the field of microvascular surgery. Diabetes mellitus is known to be related to arterial damage, platelet malfunction and thrombus formation. After microvascular anastomosis, delayed repair and vascular occlusion occurred more frequently in diabetic state.
This study was performed to investigate the patency rate and process of endothelial healing after microvascular anastomosis of femoral artery in diabeitc rat by scanning electron microscopy. The animals were divided into two groups, 20 diabetic-induced and 20 non-diabetic groups. Diabetes was induced with a injection of Streptozotocin(50㎎/㎏ b.w., Sigma Chemical Co.) to tail vein.
The results were obtained :
1. Macroscopically, anastomotic site was intact except a few cases showed minimal inflammatory sign around the wound site. But the inflammatory change was frequently occurred in diabetic-induced group.
2. The patency rate was 95% (19/20) in non-diabetic group and 65% (13/20) in diabetic-induced group.
3. In the non-diabetic group, anstomotic region was mostly endothelized by the alignment along the long axis of vessel but stitchs were not covered with endothelial cells. The thickening of vessel wall was not observed.
4. In the diabetic-induced group, anastomotic region was not endothelized but covered with blood cellular components and connective tissue instead of endothelial cells. The thickening of the vessed wall was prominent in some diabetic-induced rats.
These results suggest that diabetes was related to delayed regeneration of endothelium of vessels after microsurgical anastomosis.
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