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磷酸肌酸在斑纹电鳐电器官放电中的作用。

Role of creatine phosphate in the discharge of the electric organ of Torpedo marmorata.

作者信息

Borroni E

出版信息

J Neurochem. 1984 Sep;43(3):795-8. doi: 10.1111/j.1471-4159.1984.tb12801.x.

DOI:10.1111/j.1471-4159.1984.tb12801.x
PMID:6747635
Abstract

The role of creatine phosphate and adenosine triphosphate, as high energy phosphate sources, has been investigated during the discharge and recovery of the electric organ of Torpedo. ATP serves as the immediate source of energy for the biochemical process supporting the electrical activity of the electric organ. Under repetitive stimulation, when the energy demands exceed production, ATP levels are maintained constant at the expense of creatine phosphate. Only when the reservoir of creatine phosphate is depleted do the levels of ATP decrease, and this point corresponds to the state of maximal fatigue of the electric organ. Recovery studies show that the electric organ rapidly recovers the capacity to respond to single pulse stimuli. This recovery is statistically related to the recovery of the levels of ATP and acetylcholine. However, in this phase, the fatiguability of the electric organ is very high since its energy reservoir is still depleted. The complete recovery of the electric organ requires several hours and is closely related to the restoration of the levels of creatine phosphate.

摘要

磷酸肌酸和三磷酸腺苷作为高能磷酸源,在电鳐电器官放电和恢复过程中的作用已得到研究。三磷酸腺苷作为支持电器官电活动的生化过程的直接能量来源。在重复刺激下,当能量需求超过产生量时,三磷酸腺苷水平以磷酸肌酸为代价维持恒定。只有当磷酸肌酸储备耗尽时,三磷酸腺苷水平才会下降,而这一点对应于电器官最大疲劳状态。恢复研究表明,电器官能迅速恢复对单脉冲刺激的反应能力。这种恢复在统计学上与三磷酸腺苷和乙酰胆碱水平的恢复相关。然而,在此阶段,电器官的易疲劳性非常高,因为其能量储备仍然耗尽。电器官的完全恢复需要几个小时,并且与磷酸肌酸水平的恢复密切相关。

相似文献

1
Role of creatine phosphate in the discharge of the electric organ of Torpedo marmorata.磷酸肌酸在斑纹电鳐电器官放电中的作用。
J Neurochem. 1984 Sep;43(3):795-8. doi: 10.1111/j.1471-4159.1984.tb12801.x.
2
Phospholipid turnover in Torpedo marmorata electric organ during discharge in vivo.电鳐(Torpedo marmorata)电器官在体内放电过程中的磷脂周转
Biochem J. 1976 Sep 15;158(3):557-65. doi: 10.1042/bj1580557.
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Presynaptic effects of 4-aminopyridine and changes following a single giant impulse at the Torpedo nerve-electroplaque junction.4-氨基吡啶在电鳐神经-电板连接处的突触前效应及单个巨脉冲后的变化。
Neuroscience. 1987 Aug;22(2):709-18. doi: 10.1016/0306-4522(87)90367-8.
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Breakdown of creatine phosphate and ATP in nerve terminals and electroplaques of the Torpedo electric organ: comparison with the electrical energy dissipated.
J Neurochem. 1979 Apr;32(4):1287-94. doi: 10.1111/j.1471-4159.1979.tb11056.x.
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Different recovery rates of the electrophysiological, biochemical and morphological parameters in the cholinergic synapses of the Torpedo electric organ after stimulation.电刺激后电鳐电器官胆碱能突触中电生理、生化和形态学参数的不同恢复率。
J Neurochem. 1974 Jun;22(6):1109-14. doi: 10.1111/j.1471-4159.1974.tb04343.x.
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Energy metabolism and quantal acetylcholine release: effects of botulinum toxin, 1-fluoro-2,4-dinitrobenzene, and diamide in the Torpedo electric organ.能量代谢与量子化乙酰胆碱释放:肉毒杆菌毒素、1-氟-2,4-二硝基苯和二酰胺对电鳐电器官的影响
J Neurochem. 1988 Feb;50(2):431-9. doi: 10.1111/j.1471-4159.1988.tb02930.x.
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Rapid acetylcholine and adenosine triphosphate oscillations triggered by stimulation of the Torpedo electric organ.
J Exp Biol. 1979 Aug;81:63-73. doi: 10.1242/jeb.81.1.63.
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[Electromotive force, variation in conductance, and acetylcholine liberation in the electric organ of Torpedo].[电鳐电器官中的电动势、电导变化及乙酰胆碱释放]
C R Acad Hebd Seances Acad Sci D. 1976 Feb 23;282(8):763-6.
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31P-NMR analysis of synaptic vesicles. Status of ATP and internal pH.
Eur J Biochem. 1982 Jan;121(3):519-24. doi: 10.1111/j.1432-1033.1982.tb05817.x.

引用本文的文献

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Oligomeric state and membrane binding behaviour of creatine kinase isoenzymes: implications for cellular function and mitochondrial structure.肌酸激酶同工酶的寡聚状态及膜结合行为:对细胞功能和线粒体结构的影响
Mol Cell Biochem. 1998 Jul;184(1-2):141-51.
2
Creatine kinase in non-muscle tissues and cells.非肌肉组织和细胞中的肌酸激酶
Mol Cell Biochem. 1994 Apr-May;133-134:193-220. doi: 10.1007/BF01267955.
3
High content of creatine kinase in chicken retina: compartmentalized localization of creatine kinase isoenzymes in photoreceptor cells.
鸡视网膜中肌酸激酶含量高:肌酸激酶同工酶在光感受器细胞中的区室化定位。
Proc Natl Acad Sci U S A. 1986 Jun;83(11):3816-9. doi: 10.1073/pnas.83.11.3816.
4
Intracellular compartmentation, structure and function of creatine kinase isoenzymes in tissues with high and fluctuating energy demands: the 'phosphocreatine circuit' for cellular energy homeostasis.能量需求高且波动的组织中肌酸激酶同工酶的细胞内区室化、结构与功能:细胞能量稳态的“磷酸肌酸循环”
Biochem J. 1992 Jan 1;281 ( Pt 1)(Pt 1):21-40. doi: 10.1042/bj2810021.