Ischemia-reperfusion injury of adipofascial tissue: An experimental study evaluating early histologic and biochemical alterations in rats

被引:22
作者
Coban, YK [1 ]
Kurutas, EB
Ciralik, H
机构
[1] Sutcuimam Univ, Fac Med, Dept Plast Surg, TR-46050 Kahramanmaras, Turkey
[2] Sutcuimam Univ, Fac Med, Dept Biochem, TR-46050 Kahramanmaras, Turkey
[3] Sutcuimam Univ, Fac Med, Dept Pathol, TR-46050 Kahramanmaras, Turkey
关键词
D O I
10.1155/MI.2005.304
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Fat necrosis remains a serious complication in reconstructive flaps. In clinical setting, it is well known that fat tissue is more susceptible to ischemic events. We aimed to evaluate early histological and biochemical changes of adipofascial tissue in an experimantal model. An epigastric flap model in rats was used to evaluate the effect of ischemia-reperfusion (I-R) injury on adipofascial tissue. Two groups of animals (one with ischemia alone and other ischemia-reperfusion group) were used to evaluate the degree of histological edema, congestion and extravascular bleeding, and early biochemical alterations within the adipofascial flaps. The biochemical parameters included glutathione (GSH) and malondialdehyde (MDA). In each group, contralateral groin subcutaneous adipose tissue served as control. These evaluations were compared to normal unmanipulated, contralateral abdominal subcutaneous adipose tissue. The ischemia-reperfused flap group showed histologically significantly much edema congestion and bleeding than the control groups (P <.0001). The control group showed less edema in fat tissue than the ischemia-alone group (P <.05). All of the flaps in the ischemia-only group showed significantly less bleeding and edema than I-R group (P <.001). The ratio of MDA/GSH was 33 in control, 37 in ischemia alone, and 82 in ischemia-reperfusion groups, respectively. This study confirms that significant histologic and biochemical alteration occurs after ischemia and ischemia-reperfusion events in adipose tissue. Marked drop in adipose tissue antioxidant levels after I-R suggested that preemptive measures to this decrease should be undertaken in clinical settings.
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页码:304 / 308
页数:5
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