中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (29): 4362-4367.doi: 10.3969/j.issn.2095-4344.2016.29.015

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

热缺血20 min猪心脏死亡供体心冠状动脉内皮功能的变化

孙晓柯1,张伟华1,秦广启2,廖秋明2,Stig Steen2,乔晨晖1   

  1. 1郑州大学第一附属医院心脏外科,河南省郑州市  450052;2隆德大学医院心胸外科,瑞典  22594
  • 收稿日期:2016-04-21 出版日期:2016-07-08 发布日期:2016-07-08
  • 通讯作者: 乔晨晖,博士,主任医师,教授,郑州大学第一附属医院心外科,河南省郑州市 450052
  • 作者简介:孙晓柯,男,1982年生,河南省内乡县人,郑州大学在读硕士,主治医师,主要从事心脏外科基础与临床的研究。
  • 基金资助:

    河南省科技厅科技攻关项目(142102310346)

Effects of 20-minute warm ischemia on coronary endothelial function of pig donor hearts after cardiac death

Sun Xiao-ke1, Zhang Wei-hua1, Qin Guang-qi2, Liao Qiu-ming2, Stig Steen2, Qiao Chen-hui1   

  1. 1Department of Cardiac Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China; 2Department of Cardiothoracic Surgery, Lund University Hospital, Sweden 22594
  • Received:2016-04-21 Online:2016-07-08 Published:2016-07-08
  • Contact: Qiao Chen-hui, M.D., Professor, Chief physician, Department of Cardiac Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • About author:Sun Xiao-ke, Attending physician, Department of Cardiac Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • Supported by:

    the Key Science and Technology Program of Henan Province, China, No. 142102310346

摘要:

文章快速阅读:

文题释义:
心脏死亡供体:在供体心脏停止跳动后经历一段热缺血后获得的心脏,按照Maastricht大学医院的标准,心脏死亡供体分为 4 类:到院时已经死亡;复苏失败;撤除生命支持、等待心脏停跳;脑死亡患者的心脏停跳。
热缺血时间:器官从供体供血停止到冷灌注(冷保存)开始的这段时间。这一期间对器官的损害最为严重,一般不应超过10 min,这是因为,热缺血时(器官离体后),虽然血流中断,但是器官组织仍继续进行代谢,此时,因氧和各种代谢底物供应缺乏而器官的代谢水平仍高,所以器官缺血损害出现较快、程度较重,又因氧消耗完后,仍可进行无氧代谢,但代谢产物无法清除,可引起酸中毒,代谢必需的养料和酶系统亦有消耗。
摘要
背景:
心脏移植中,热缺血导致供心的损伤除了心肌损伤,还有冠状动脉血管内皮损伤,而冠状动脉血管内皮结构与功能的完整性是影响心脏移植患者术后近远期疗效的关键因素之一。
目的:观察缺氧诱导的热缺血20 min猪心脏死亡供体供心冠状动脉内皮细胞功能变化。
方法:健康瑞典家猪16头,随机分为对照组6头、心脏死亡供体组和心脏死亡供体+冷保存组各5头。对照组直接切取心脏冠状动脉左前降支远端血管环进行器官浴槽实验;心脏死亡供体组和心脏死亡供体+冷保存组均建立缺氧诱导的热缺血20 min的心脏死亡供体模型,心脏死亡供体组直接切取心脏冠状动脉左前降支远端血管环进行器官浴槽实验;心脏死亡供体+冷保存组切取心脏后保存4 h,再切取心脏冠状动脉左前降支远端血管环进行器官浴槽实验。评价3组冠状动脉内皮依赖性舒张(EDRmax)的变化。
结果与结论:冠状动脉内皮依赖性舒张(EDRmax) 3组间差异无显著性意义(P > 0.05);50%最大舒张时P物质的浓度对数(pEC50) 3组间差异无显著性意义(P > 0.05)。提示热缺血20 min猪心脏死亡供体心脏冠状动脉内皮功能损伤不明显,心脏死亡供体+冷保存4 h对冠状动脉内皮功能也无显著影响。

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
ORCID: 0000-0003-1665-612X(孙晓柯)

关键词: 组织构建, 组织工程, 心脏移植, 心脏死亡供体, 猪, 内皮细胞, 热缺血, 器官浴槽

Abstract:

BACKGROUND: Myocardial and coronary endothelial injury occurs in donor hearts due to warm ischemia during cardiac transplantation. Coronary endothelial structure and function play a critical role in long-term outcomes for patients after cardiac transplantation. 
OBJECTIVE: To study the effect of hypoxia-induced warm ischemia (20 minutes) on coronary endothelial function of porcine donor hearts after cardiac death (DCD).
METHODS: Sixteen healthy Swedish domestic pigs were randomized into control (n=6), DCD (n=5), and DCD plus cold storage (n=5) groups, respectively. A DCD model in pigs was established using the method of hypoxia-induced 20-minute warm ischemia in the DCD and DCD plus cold storage groups. Isolation of the heart left anterior descending coronary artery or combined with heart preservation pretreatment for 4 hours was performed in the DCD and DCD plus cold storage groups. The maximum coronary endothelium-dependent relaxation was determined in the three groups.
RESULTS AND CONCLUSION: There were no significant differences in the maximum coronary endothelium-dependent relaxation and the minus logarithmic of substance concentration induced 50%maximal relaxation among three groups (P > 0.05). These results indicate that 20-minute warm ischemia cannot lead to obvious coronary endothelial dysfunction. In addition, DCD combined with 4-hour cold storage does not affect coronary endothelial function.

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: Heart, Transplantation, Endothelial Cells, Swine

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