Deletion of hydroxyethylstarch from University of Wisconsin solution induces cell shrinkage and proteolysis during and after cold storage of rat liver

Deletion of hydroxyethylstarch from University of Wisconsin solution induces cell shrinkage and proteolysis during and after cold storage of rat liver
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威斯康星大学溶液中羟乙基淀粉的缺失会导致大鼠肝脏冷藏期间和冷藏后的细胞收缩和蛋白水解

DOI:
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发表时间:
1997
期刊:
影响因子:
13.5
通讯作者:
L. Cynober
L. Cynober
中科院分区:
医学1区
文献类型:
--
作者:
N. Neveux;J. Bandt;C. Charrueau;E. Savier;J. Chaumeil;L. Hannoun;J. Giboudeau;L. Cynober

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在用于器官保存的威斯康星州大学(UW)溶液的众多成分中,羟乙基淀粉(HES)(该溶液的胶体渗透支持物)的有用性存在争议。我们的研究的目的是确定羟乙基淀粉对肝脏代谢和细胞内水化状态的影响,在低温保存和再灌注后的离体灌注大鼠肝脏模型。在含或不含羟乙基淀粉的UW保存液中,立即或在冷藏18小时后灌注三组8个肝脏。省略HES导致(1)刺激蛋白质降解,表现为支链氨基酸(BCAA)释放显著增加(211 ± 55 vs. 87 ± 28 nmol/min/g; P <0.05,改良UW组vs. UW组),(2)耗氧量增加(81.7 ± 4.8 vs. 61.5 ± 5.0 µmol/h/g; P < .05),(3)葡萄糖生成减少(2.3 ± 0.6 vs. 5.0 ± 0.6 µmol/min/g; P < .05),(4)细胞内容积减少(414 ± 36 vs. 557 ± 41 µL/g; P < .05)。我们的结论是,羟乙基淀粉在肝脏保存中起着重要的作用,通过限制蛋白水解,可能是通过观察到的细胞体积的保存。
Among the numerous components of the University of Wisconsin (UW) solution used for organ preservation, the usefulness of hydroxyethylstarch (HES), the colloido‐osmotic support of this solution, is controversial. The aim of our study was to determine the influence of HES on hepatic metabolism and intracellular hydration state during hypothermic preservation and after reperfusion in a model of isolated perfused rat liver. Three groups of eight livers were perfused either immediately or after 18 hours of cold storage in a UW‐ based preservation solution with or without HES. Omission of HES results in (1) a stimulation of protein degradation shown by the marked increase in branched‐chain amino acid (BCAA) release (211 ± 55 vs. 87 ± 28 nmol/min/g; P < .05, modified UW group vs. UW group), (2) an increase in oxygen consumption (81.7 ± 4.8 vs. 61.5 ± 5.0 µmol/h/g; P < .05), (3) a decrease in glucose production (2.3 ± 0.6 vs. 5.0 ± 0.6 µmol/min/g; P < .05), and (4) a reduction in intracellular volume (414 ± 36 vs. 557 ± 41 µL/g; P < .05). We conclude that HES plays an important role in liver preservation by limiting proteolysis, possibly through the observed preservation of cell volume.
灌注液流速对灌注大鼠肝脏制剂中测量的血容量、血管空间、细胞内水空间和药物提取的影响:通过多指示剂稀释技术进行表征。
DOI: 10.1007/bf01062014
发表时间: 1988
期刊: Journal of pharmacokinetics and biopharmaceutics
影响因子: --
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发表时间: 1988
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影响因子: 2.7
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DOI: 10.1152/ajpgi.1989.257.6.g961
发表时间: 1989
期刊: The American journal of physiology
影响因子: --
作者:
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DOI: --
发表时间: 1991
期刊: The Journal of biological chemistry
影响因子: --
作者:
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DOI: --
发表时间: 1994
期刊: Transplantation
影响因子: 6.2
作者:
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通讯作者: Thurman,RG