Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (13): 2081-2087.doi: 10.3969/j.issn.2095-4344.1691

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Mild hypothermia combined with adipose-derived mesenchymal stem cells protects hepatic function in hepatic ischemia-reperfusion injury

Liu Jian1, Li Li1, Wang Xiaochuan2, Zhang Shengning1, Li Laibang1, Mang Yuanyi1, Gao Yang1, Chen Yonglin1, Ren Gang1, Li Wang1   

  1. 1Department of Hepatic-biliary-pancreatic Surgery, Calmette International Hospital, the First People’s Hospital of Kunming, Clinical Medical Center of Organ Transplantation of Yunnan Province, Kunming 650224, Yunnan Province, China; 2Department of Dermatology, the First People’s Hospital of Yunnan, Kunming 650032, Yunnan Province, China
  • Online:2019-05-08 Published:2019-05-08
  • Contact: Li Li, MD, Chief physician, Department of Hepatic-biliary-pancreatic Surgery, Calmette International Hospital, the First People’s Hospital of Kunming, Clinical Medical Center of Organ Transplantation of Yunnan Province, Kunming 650224, Yunnan Province, China
  • About author:Liu Jian, MD, Associate chief physician, Department of Hepatic-biliary-pancreatic Surgery, Calmette International Hospital, the First People’s Hospital of Kunming, Clinical Medical Center of Organ Transplantation of Yunnan Province, Kunming 650224, Yunnan Province, China

Abstract:

BACKGROUND: Hepatic ischemia-reperfusion injury is the bottleneck restricting liver surgeries as its complex and diverse mechanisms. How to reduce liver ischemia-reperfusion injury has always been one of the hotspots and difficulties in medical research.
OBJECTIVE: To explore the protective mechanism of mild hypothermia pretreatment combined with adipose-derived mesenchymal stem cells transplantation for hepatic ischemia reperfusion injury in rats.
METHODS: Sixty male Sprague-Dawley rats (provided by the Experimental Animal Center of Kunming Medical University in China) were randomly divided into six groups with 10 rats in each group: sham operation group (Sham), hepatic ischemia-reperfusion injury group (HIRI), mild hypothermia group (MH), adipose-derived mesenchymal stem cells group (ADMSCs), mild hypothermia+ADMSCs group (MH+ADMSCs) and mild hypothermia+ADMSCs+ ERK inhibitor group (MH+ADMSCs+PD98059). The rats were given mild hypothermia, adipose-derived mesenchymal stem cells, or ERK inhibitor intervention at 30 minutes before ischemia. The serum and liver tissue samples were collected 12 hours after hepatic ischemia-reperfusion. 
RESULTS AND CONCLUSION: The activities of aspartate aminotransferase, alanine aminotransferase and lactate dehydrogenase in the serum of groups MH, ADMSCs and MH+ADMSCs were significantly higher than those in the HIRI group (P < 0.05). The activities of aspartate aminotransferase, alanine aminotransferase and lactate dehydrogenase in group MH+ADMSCs were significantly lower than those in groups MH and ADMSCs (P < 0.05). Subsequently, compared with group HIRI, the activities of superoxide dismutase and glutathione peroxide were significantly higher in groups MH, ADMSCs and MH+ADMSCs (P < 0.05), whereas the levels of malondialdehyde were significantly lower in the three groups (P < 0.05). The activities of superoxide dismutase and glutathione peroxide in group MH+ADMSCs were significantly higher than those in groups MH and ADMSCs (P < 0.05), whereas the level of malondialdehyde in group MH+ADMSCs was lower than that in groups MH and ADMSCs (P < 0.05). The relative expression level of p-ERK1/2 in the liver tissue was significantly increased in groups MH, ADMSCs and MH+ADMSCs as compared with group HIRI (P < 0.05), but there were no significant differences in the relative expression level of ERK1/2 among the groups. Furthermore, the apoptotic cell proportion of liver tissues in groups HIRI and MH+ADMSCs+PD98059 were higher than that in groups MH, ADMSCs and MH+ADMSCs. These results were in consistent with the findings of western blot detection. To conclude, mild hypothermia combined with adipose-derived mesenchymal stem cells transplantation has a protective effect against hepatic ischemia-reperfusion injury, and the mechanism may be through activating ERK pathway to downregulate the percentage of apoptotic hepatocytes in vivo.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Liver, Reperfusion Injury, Adipose Tissue, Mesenchymal Stem Cell Transplantation, Hypothermia, Induced, Tissue Engineering

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