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  • Title: [Effect of intestinal ischemia/reperfusion injury on protein and mRNA levels of Leptin in rats].
    Author: Lin J, Yan GT, Wang LH, Hao XH, Zhang K, Xue H.
    Journal: Zhongguo Wei Zhong Bing Ji Jiu Yi Xue; 2004 Nov; 16(11):651-5. PubMed ID: 15535896.
    Abstract:
    OBJECTIVE: To investigate the effect of intestinal ischemia/reperfusion injury on Leptin levels in serum and adipose tissue, and evaluate the potential role of Leptin in acute inflammatory response. METHODS: An intestinal ischemia/reperfusion injury model of rats was reproduced. Serum and adipose tissue Leptin concentrations and Leptin mRNA expression in adipose tissue were determined by a highly-sensitive murine Leptin radioimmunoassay and reverse transcription-polymerase chain reaction (RT-PCR), respectively. RESULTS: Compared with animals prior to injury, serum Leptin level decreased significantly in ischemia for 60 minutes followed by reperfusion for 30 minutes (I60R30), but it tended to increase in I60R150 and significantly increased in I60R360. Compared with sham group, serum Leptin level tended to increase in I60R240 and elevated significantly in I60R360; Leptin levels in adipose tissue significantly decreased in I60R30 and I60R90, while they increased significantly in I60R360. Compared with sham group, Leptin mRNA levels elevated significantly in I60R30, I60R240 and I60R360, but lowered significantly in I60R150. CONCLUSION: Leptin has a time-dependent response to acute inflammatory stimuli such as intestinal ischemia/reperfusion injury, and it migh play a role as an inflammatory cytokine.
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