Inflammation and the regulation of glutathione level in lung epithelial cells.

Inflammation and the regulation of glutathione level in lung epithelial cells.
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肺上皮细胞炎症和谷胱甘肽水平的调节。

DOI:
10.1089/ars.1999.1.4-425
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发表时间:
1999
影响因子:
6.6
通讯作者:
Irfan Rahman
Irfan Rahman
中科院分区:
生物学2区
文献类型:
--
作者:
Irfan Rahman

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炎症是对细胞损伤的一种高度复杂的生化保护反应。如果这个过程一直不受控制,就会导致慢性炎症,这是各种炎症性肺病的标志。由免疫细胞募集到炎症部位产生的活性氧中间体是细胞损伤的主要原因。谷胱甘肽(GSH)是肺细胞内和细胞外重要的保护性抗氧化剂。谷胱甘肽合成的限速酶是γ -谷氨酰半胱氨酸合成酶(γ - gcs)。肺细胞中的氧化剂、酚类抗氧化剂、炎症剂和抗炎剂均可调节GSH和γ - gcs的表达。谷胱甘肽在调节氧化诱导的肺上皮细胞功能和控制促炎过程中起关键作用。肺泡和肺谷胱甘肽代谢的改变被广泛认为是许多炎症性肺病的中心特征。氧化过程通过NF-kappaB和AP-1等氧化还原敏感转录因子调控促炎介质和γ - gcs等保护性抗氧化基因的基因,在肺部炎症中起着重要作用。炎症部位氧化应激诱导促炎介质和抗氧化基因之间的关键平衡尚不清楚。对肺炎症中谷胱甘肽调节机制的了解可能会导致基于在肺炎症和损伤中产生这种重要抗氧化剂的药理学操作的新疗法的发展。本文综述了谷胱甘肽在肺氧化应激、炎症和损伤中的潜在作用。
Inflammation is a highly complex biochemical protective response to cellular injury. If this process is continuously unchecked, it leads to chronic inflammation, a hallmark of various inflammatory lung diseases. Reactive oxygen intermediates generated by immune cells recruited to the sites of inflammation are a major cause of cell damage. Glutathione (GSH), is a vital intra- and extracellular protective antioxidant in the lungs. The rate-limiting enzyme in GSH synthesis is gamma-glutamylcysteine synthetase (gamma-GCS). Both GSH and gamma-GCS expression are modulated by oxidants, phenolic antioxidants, inflammatory, and anti-inflammatory agents in lung cells. GSH plays a key role in regulating oxidant-induced lung epithelial cell function and also in the control of pro-inflammatory processes. Alterations in the alveolar and lung GSH metabolism are widely recognized as a central feature of many inflammatory lung diseases. Oxidative processes have a fundamental role in lung inflammation through redox-sensitive transcription factors such as NF-kappaB and AP-1, which regulated the genes for pro-inflammatory mediators and protective antioxidant genes such as gamma-GCS. The critical balance between the induction of pro-inflammatory mediators and antioxidant genes in response to oxidative stress at the site of inflammation is not known. Knowledge of the mechanisms of GSH regulation in lung inflammation could lead to the development of novel therapies based on the pharmacological manipulation of the production of this important antioxidant in lung inflammation and injury. This review describes the potential role of GSH for lung oxidant stress, inflammation and injury.
醌诱导的氧化应激会升高大鼠肺上皮 L2 细胞中的谷胱甘肽并诱导 γ-谷氨酰半胱氨酸合成酶活性。
DOI: --
发表时间: 1994
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