肠缺血-再灌注损伤对Leptin浓度变化影响的初探

目的 :研究肠缺血再灌注损伤对血清及脂肪组织 L eptin水平的影响 ,探讨 L eptin在急性炎症反应中的作用。方法 :建立大鼠肠缺血再灌注损伤模型 ,采用高灵敏鼠类 L eptin放射免疫分析方法测量血清及脂肪组织 L eptin浓度变化。结果 :肠缺血 6 0 min、再灌注损伤 30 m in后血清 L eptin水平为 (1 0 .82± 0 .83) μg/L,相对于实验前的 (1 6 .4 6± 3.2 1 ) μg/L 有显著下降 (P<0 .0 5 ) ,而血清 L eptin浓度高于脂肪组织水平 (4 .4 6±2 .6 3) m g/1 0 0 g,并且两者的 L eptin水平都有随损伤时间延长而逐步升高的趋势 (P=0 .0 4 7)。结论 :L eptin可能具有炎性细胞因子的作用 ,在肠缺血再灌注损伤等急性炎症反应中可能发挥一定作用

Primary research of the effect of intestinal ischemia/reperfusion injury on Leptin concentrations

OBJECTIVE: To explore the effect of intestinal ischemia/reperfusion injury on Leptin concentrations in serum and adipose tissue, and to find out the role of Leptin in acute inflammatory responses. METHODS: An intestinal ischemia-reperfusion injury model of rats was established, and used a highly-sensitive murine Leptin radioimmunoassay to check the change of Leptin concentrations in serum and adipose tissue. RESULTS: Serum Leptin level (10.82+/-0.83) microg/L significantly decreased after an injury of 60-minute ischemia and 30-minute reperfusion versus pre-experimental serum levels (16.46+/-3.21) microg/L; Leptin level in serum was higher than that in adipose tissue (4.466+/-2.63) mg/100g, and they both showed a similar changeable trend to increase step by step as reperfusion time extended (P=0.047). CONCLUSION: Leptin may be an inflammatory cytokine and may play a role in inflammatory responses such as intestinal ischemia/reperfusion.