Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (1): 70-77.doi: 10.3969/j.issn.2095-4344.2016.01.013

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Transplantation of human amnion-derived mesenchymal stem cells alleviates ischemia-reperfusion-induced acute lung injury after cardiopulmonary bypass

Qiang Yong1, Liang Gui-you2, Yu Li-mei3, Qi Bin3, Gao Zhen-yu4   

  1. 1Department of Cardiothoracic Surgery, Nanjing General Hospital of Nanjing Military Command, Nanjing 210002, Jiangsu Province, China; 2Department of Cardiothoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China; 3Key Laboratory of Cell Engineering in Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China; 4Surgical Animal Experiment Center, Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Received:2015-11-15 Online:2016-01-01 Published:2016-01-01
  • Contact: Liang Gui-you, M.D., Professor, Master’s supervisor, Department of Cardiothoracic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • About author:Qiang Yong, Master, Attending physician, Department of Cardiothoracic Surgery, Nanjing General Hospital of Nanjing Military Command, Nanjing 210002, Jiangsu Province, China
  • Supported by:

    the Scientific Tackle Key Project of Guizhou Province, No. [2014]3022; the Scientific Tackle Key Project of Zunyi City, No. [2013]38

Abstract:

BACKGROUND: In recent years, mesenchymal stem cells exhibit a good prospect in organ or tissue repair and therefore, and therefore, cell transplantation based on mesenchymal stem cell plasticity can promote cell regeneration and functional recovery from lung injury after cardiopulmonary bypass.
OBJECTIVE: To investigate the effects of human amnion-derived mesenchymal stem cells (hAMSCs) transplantation on ischemia-reperfusion-induced acute lung injury in dogs after cardiopulmonary bypassand its mechanism for regulating inflammatory cytokines.
METHODS: Eighteen adult healthy mongrel dogs were randomly divided into three groups (n=6 per group): black group (cardiopulmonary bypass with 1 mL physiological saline injection via the femoral vein without blocking the aorta), control group (cardiopulmonary bypass with blocking the aorta for 1 hour and then opening the aorta for 15 minutes plus 1 mL physiological saline injection via the femoral vein), experiment group (cardiopulmonary bypass with blocking the aorta for 1 hour and then opening the aorta for 15 minutes plus femoral vein injection of 1 mL physiological saline containing 2×107 hAMSCs). Arterial blood samples of 2 mL were taken to calculate oxygenation index and respiratory index before cardiopulmonary bypass (T1), 15 minutes (T2), 1 hour (T3), 2 hours (T4), 3 hours (T5) after opening the aorta. 8 mL intravenous blood samples were taken to detect the serum tumor necrosis factor α, matrix metalloproteinase-9, interleukin-8 and interleukin-10 by ELISA. Meanwhile, western blot assay was used to detect the expression of nuclear factor-κB in lung tissues, and histopathological changes of lung tissues observed under optical microscope.
RESULTS AND CONCLUSION: Compared with the control group, the oxygenation index was significantly increased in the experimental group at 2 and 3 hours after transplantation, and the respiratory index was remarkably decreased at 1, 2, 3 hours after transplantation. Compared with the control group, the levels of tumor necrosis factor α, matrix metalloproteinase-9 and interleukin-8 were significantly decreased in the experimental group, but the level of interleukin-10 was increased in the experimental group. Compared with the blank group, the expression of nuclear factor-κB was significantly strengthened in the control group at 3 hours after opening the aorta, but it was decreased significantly after intravenous injection of hAMSCs. After opening the aorta, the pathological changes in the experimental group were remarkably milder than those in the control group, and a small amount of red blood cells and neutrophils exuded, with telangiectasia, and congestion, were found in the experimental group. These findings indicate that hAMSCs transplantation can mitigate ischemia-reperfusion- induced acute lung injury after cardiopulmonary bypass by adjusting the level of nuclear factor-κB in lung tissues and release of tumor necrosis factor α, matrix metalloproteinase-9, interleukin-8 and interleukin-10. 

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