Respiratory plasticity following intermittent hypoxia: roles of protein phosphatases and reactive oxygen species.

Respiratory plasticity following intermittent hypoxia: roles of protein phosphatases and reactive oxygen species.
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间歇性缺氧后的呼吸可塑性:蛋白磷酸酶和活性氧的作用。

DOI:
10.1042/bst0351269
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发表时间:
2007
影响因子:
3.9
通讯作者:
Mitchell,GS
Mitchell,GS
中科院分区:
生物学3区
文献类型:
--
作者:
Wilkerson,JER;Macfarlane,PM;Hoffman,MS;Mitchell,GS

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可塑性是呼吸控制系统的一个重要特性。呼吸可塑性的最佳研究模型之一是pLTF(膈神经长时程易化)。pLTF是在急性暴露于间歇性缺氧后持续数小时的膈运动输出的进行性增加。类似于许多其他形式的神经可塑性,pLTF是模式敏感的;它是由间歇性的,但不是持续缺氧类似的累积时间。近年来,我们对pLTF的细胞/突触机制的理解大大增加。在这里,我们回顾积累的证据表明,pLTF的模式敏感性产生实质上从差分活性氧的形成和随后的蛋白磷酸酶抑制间歇性持续缺氧或附近的膈运动神经元相比。对pLTF的细胞/突触机制的详细了解可能会为治疗严重通气控制障碍(例如脊髓损伤后或神经退行性疾病(例如肌萎缩侧索硬化症)期间的阻塞性睡眠呼吸暂停和呼吸功能不全)的新药理学方法提供理论基础。
Plasticity is an important property of the respiratory control system. One of the best-studied models of respiratory plasticity is pLTF (phrenic long-term facilitation). pLTF is a progressive increase in phrenic motor output lasting several hours following acute exposure to intermittent hypoxia. Similar to many other forms of neuroplasticity, pLTF is pattern-sensitive; it is induced by intermittent, but not sustained hypoxia of similar cumulative duration. Our understanding of the cellular/synaptic mechanisms underlying pLTF has increased considerably in recent years. Here, we review accumulating evidence suggesting that the pattern-sensitivity of pLTF arises substantially from differential reactive oxygen species formation and subsequent protein phosphatase inhibition during intermittent compared with sustained hypoxia in or near phrenic motor neurons. A detailed understanding of the cellular/synaptic mechanisms of pLTF may provide the rationale for new pharmacological approaches in the treatment of severe ventilatory control disorders, such as obstructive sleep apnoea and respiratory insufficiency either following spinal cord injury or during neurodegenerative diseases such as amyotrophic lateral sclerosis.
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DOI: 10.1007/0-387-27023-x_28
发表时间: 2004
影响因子: --
作者:
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发表时间: 1997-10-03
期刊: MOLECULAR BRAIN RESEARCH
影响因子: --
作者:
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通讯作者: Wadzinski, BE
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发表时间: 2001-06-01
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