中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (13): 2081-2087.doi: 10.3969/j.issn.2095-4344.1691

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

亚低温联合脂肪间充质干细胞对肝缺血再灌注损伤的保护作用

刘 剑1,李 立1,王晓川2,张升宁1,李来邦1,莽源祎1,高 扬1,陈永林1,任 刚1,李 望1   

  1. 1昆明市第一人民医院附属甘美医院肝胆胰血管外科,云南省器官移植临床医学中心,云南省昆明市 650224;2云南省第一人民医院皮肤科,云南省昆明市 650032
  • 出版日期:2019-05-08 发布日期:2019-05-08
  • 通讯作者: 李立,博士,主任医师,昆明市第一人民医院附属甘美医院肝胆胰血管外科,云南省器官移植临床医学中心,云南省昆明市 650224
  • 作者简介:刘剑,男,1973年生,云南省昆明市人,汉族,2011年昆明医科大学毕业,博士,副主任医师,主要从事于肝胆胰血管外科移植。

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

摘要:

文章快速阅读:

文题释义:
缺血再罐注损伤:
是肝脏手术过程中比较常见的引起组织器官损伤的因素之一。在肝移植外科,肝脏缺血再灌注损伤能够引起肝脏移植术后早期或晚期移植肝功能丧失或衰竭,有时甚至成为引发患者死亡的主要原因,能够直接影响患者预后和生存率。
亚低温:是指一种以物理方法将患者的体温降低到预期水平而达到治疗疾病目的的方法。亚低温在神经外科中已得到广泛应用,其可减低内皮细胞损伤、炎症反应及减少活性氧成分的形成,从而对损伤组织具有保护作用。

 

摘要
背景:
肝缺血再灌注损伤的机制复杂多样,是制约肝脏外科手术的瓶颈,如何减轻肝缺血再灌注损伤一直是医学研究的热点与难点之一。
目的:探讨亚低温联合脂肪间充质干细胞预处理对大鼠肝缺血再灌注损伤的保护作用机制。
方法:将60只雄性SD大鼠(购于昆明医科大学实验动物中心)随机分为6组:假手术组、肝缺血再灌注损伤组、亚低温组、脂肪间充质干细胞组、亚低温+脂肪间充质干细胞组、ERK通路阻断剂组,每组10只,均于缺血前30 min给予亚低温、脂肪间充质干细胞、ERK通路阻断剂干预。肝缺血再灌注12 h后收集大鼠血清及肝组织标本,进行相关指标检测。肝缺血再灌注12 h后收集大鼠血清、肝组织,术后7 d收集大鼠肝组织,进行相关指标检测。
结果与结论:①全自动生化分析仪检测肝功能指标:亚低温组、脂肪间充质干细胞组、亚低温+脂肪间充质干细胞组血清中天冬氨酸转氨酶、丙氨酸转氨酶和乳酸脱氢酶活性均低于肝缺血再灌注损伤组(P < 0.05),亚低温+脂肪间充质干细胞组血清中3种酶活性低于亚低温组和脂肪间充质干细胞组(P < 0.05);②ELISA检测氧化应激指标:亚低温组、脂肪间充质干细胞组、亚低温+脂肪间充质干细胞组肝组织中超氧化物歧化酶、谷胱甘肽过氧化物酶活性显著高于肝缺血再灌注损伤组(P < 0.05),丙二醛水平均显著低于肝缺血再灌注损伤组(P < 0.05);亚低温+脂肪间充质干细胞组肝组织中超氧化物歧化酶和谷胱甘肽过氧化物酶水平显著高于亚低温组和脂肪间充质干细胞组(P < 0.05),而丙二醛水平低于亚低温组和脂肪间充质干细胞组(P < 0.05);③Western blotting检测相关蛋白表达:与肝缺血再灌注损伤组相比,亚低温组、脂肪间充质干细胞组、亚低温+脂肪间充质干细胞组肝组织中p-ERK1/2相对表达水平显著升高(P < 0.05),各组中ERK1/2的表达差异无显著性意义;④TUNEL检测肝细胞凋亡数量:肝缺血再灌注损伤组和ERK通路阻断剂组肝组织中细胞凋亡率明显高于亚低温组、脂肪间充质干细胞组、亚低温+脂肪间充质干细胞组。同时,Western blotting检测相关凋亡蛋白结果与其一致;⑤结果表明,亚低温联合脂肪间充质干细胞对肝缺血再灌注损伤具有保护作用,其机制与激活ERK通路进而下调肝细胞凋亡有关。


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
ORCID:
0000-0003-2294-9658(刘剑)

关键词: 肝缺血再灌注, 脂肪间充质干细胞, 亚低温, 肝细胞凋亡, ERK信号通路, 干细胞

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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