Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (46): 7445-7450.doi: 10.3969/j.issn.2095-4344.2015.46.013

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Inflammatory transmitter changes during tourniquet-induced limb ischemia-reperfusion injury and the role of ischemic preconditioning

Yan Bin, Hasilu, Maihemuti Yakufu, Hou Yan-jie, Xu Chao, Yilihamu Tuoheti   

  1. Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830063, Xinjiang Uygur Autonomous Region, China
  • Received:2015-10-09 Online:2015-11-12 Published:2015-11-12
  • Contact: Yilihamu Tuoheti, M.D., Chief physician, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830063, Xinjiang Uygur Autonomous Region, China
  • About author:Yan Bin, Attending physician, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830063, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the Scientific Research and Innovation Fund of Xinjiang Medical University in 2013, No. XJC201368

Abstract:

BACKGROUND: Over-expression of serum interleukin-6 and interleukin-8 may be involved in tourniquet-induced limb ischemia-reperfusion injury to the lung ventilation function.

OBJECTIVE: To evaluate the tourniquet effect on serum interleukin-6 and interleukin-8 levels of the rat limb within the safety time limit.
METHODS: Sixty rats were randomly divided into control and experimental groups, 30 rats in each group. Rats in the control group had no ischemic preconditioning and were directly subjected to stop bleeding for 2, 3, 4 hours; rats in the experimental group were subjected to ischemic preconditioning (short-time hemostasis for several times within 1 day before ischemia-reperfusion injury), and then underwent 2-, 3-, 4-hour hemostasis at the 2nd day. At 1, 3, 7, 14 days after the recovery of limb blood flow, blood samples were extracted to detect serum interleukin-6 and interleukin-8 levels using ELISA method.
RESULTS AND CONCLUSION: The levels of interleukin-6 interleukin-8 showed an increasing and decreasing trend in the two groups, which both reached the peak at the 3rd day (P < 0.05). The levels of interleukin-6 in the experimental group was significantly higher than that in the control group at 1, 3, 7, 14 days (P < 0.05), and only at 7 days, the level of interleukin-6 in the rats undergoing 3-hour hemostasis was significantly lower than that in the control group (P < 0.05). At 7 days, the level of interleukin-8 in the rats undergoing 3-hour hemostasis was lower than that in the control group, but there was no significant difference (P > 0.05), and at 3, 7, 14 days, the level of interleukin-8 in the rats undergoing 4-hour hemostasis was significantly higher than that in the control group (P < 0.05). At 1 and 3 days, the levels of interleukin-6 and interleukin-8 in the experimental group had an increasing trend with the bleeding time and ranked as follows: 2-hour hemostasis < 3-hour hemostasis < 4-hour hemostasis, and there was a significant difference; while in the control group, there was also an increasing trend in the levels of interleukin-6 and interleukin-8, but there was no statistical difference. These findings indicate that the tourniquet preconditioning treatment is preferred at 3 days after limb ischemia-reperfusion injury, when the inflammatory response was the most obvious in rats, and this treatment can dramatically reduce inflammatory response. Additionally, the inflammatory become more obvious with the bleeding time.
中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Ischemia, Ischemic Preconditioning, Reperfusion Injury