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成年心肌细胞的缺氧损伤。

Anoxic injury of adult cardiac myocytes.

作者信息

Piper H M, Schwartz P, Spahr R, Hütter J F, Spieckermann P G

出版信息

Basic Res Cardiol. 1985;80 Suppl 1:37-41. doi: 10.1007/978-3-662-11041-6_6.

DOI:10.1007/978-3-662-11041-6_6
PMID:3994638
Abstract

Cultured adult cardiocytes were exposed to anoxia. The initial decrease of high-energy phosphates was accompanied by a moderate release of cytosolic enzymes and morphological changes: the appearance of sarcolemmal 'microblebs' (approximately 1 micron in diameter) and an increase of subsarcolemmal vesicles. At ATP levels above 2 mumol/gww, metabolic and morphological alterations were reversible. Probably the sarcolemmal changes are causally related to the loss of macromolecules from reversibly injured cells. At ATP levels below 2 mumol/gww, an increasing number of cells become irreversibly hypercontracted. In these cells cytoplasmic masses are protruded into large 'macroblebs' (10-30 micron in diameter), however sarcolemmal continuity is preserved. Thus, enzyme release, irreversible contracture and cytolysis do not occur simultaneously in anoxic isolated cardiocytes.

摘要

将培养的成年心肌细胞置于缺氧环境中。高能磷酸盐的初始减少伴随着胞质酶的适度释放和形态学变化:出现肌膜“微泡”(直径约1微米)以及肌膜下小泡增多。当ATP水平高于2微摩尔/克湿重时,代谢和形态学改变是可逆的。肌膜变化可能与可逆性损伤细胞中大分子物质的丢失存在因果关系。当ATP水平低于2微摩尔/克湿重时,越来越多的细胞会发生不可逆的过度收缩。在这些细胞中,细胞质团块突出形成大的“大泡”(直径10 - 30微米),然而肌膜的连续性得以保留。因此,在缺氧的分离心肌细胞中,酶释放、不可逆挛缩和细胞溶解不会同时发生。

相似文献

1
Anoxic injury of adult cardiac myocytes.成年心肌细胞的缺氧损伤。
Basic Res Cardiol. 1985;80 Suppl 1:37-41. doi: 10.1007/978-3-662-11041-6_6.
2
Ultrastructure of cultured adult myocardial cells during anoxia and reoxygenation.缺氧和复氧过程中培养的成年心肌细胞的超微结构
Am J Pathol. 1984 Jun;115(3):349-61.
3
Relation between enzyme release and metabolic changes in reversible anoxic injury of myocardial cells.心肌细胞可逆性缺氧损伤中酶释放与代谢变化的关系。
Life Sci. 1984 Jul 9;35(2):127-34. doi: 10.1016/0024-3205(84)90131-0.
4
Mitochondrial enzyme retention by irreversibly damaged rectangular isolated adult rat heart myocytes.不可逆损伤的成年大鼠离体矩形心脏肌细胞对线粒体酶的保留
Life Sci. 1985 Nov 4;37(18):1697-704. doi: 10.1016/0024-3205(85)90297-8.
5
Isolated rat cardiac myocytes as an experimental tool in the study of anoxic cell injury. Effect of reoxygenation--a preliminary report.离体大鼠心肌细胞作为缺氧细胞损伤研究的实验工具。复氧的影响——初步报告。
Forensic Sci Int. 1980 Nov-Dec;16(3):185-90. doi: 10.1016/0379-0738(80)90202-9.
6
Enzyme release and glycolytic energy production.
Basic Res Cardiol. 1985;80 Suppl 1:143-7. doi: 10.1007/978-3-662-11041-6_28.
7
Absence of reoxygenation damage in isolated heart cells after anoxic injury.缺氧损伤后分离的心脏细胞中无再氧合损伤。
Pflugers Arch. 1984 May;401(1):71-6. doi: 10.1007/BF00581535.
8
Energy metabolism and enzyme release of cultured adult rat heart muscle cells during anoxia.
J Mol Cell Cardiol. 1984 Nov;16(11):995-1007. doi: 10.1016/s0022-2828(84)80013-9.
9
The calcium and the oxygen paradox: non-existent on the cellular level.
Basic Res Cardiol. 1985;80 Suppl 2:159-63.
10
Calcium-shifts in anoxic cardiac myocytes. A cytochemical study.缺氧心肌细胞中的钙转移。一项细胞化学研究。
J Mol Cell Cardiol. 1986 Apr;18(4):439-48. doi: 10.1016/s0022-2828(86)80906-3.

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