Transforming growth factor-β and ischemic brain injury

被引:84
作者
Alain Buisson [1 ]
Sylvain Lesne [1 ]
Fabian Docagne [1 ]
Carine Ali [1 ]
Olivier Nicole [1 ]
Eric T. MacKenzie [1 ]
Denis Vivien [1 ]
机构
[1] Université de CAEN, UMR CNRS 6551, Centre CYCERON, Caen Cedex, bd H. Becquerel
[2] Universite de CAEN-CNRS UMR 6551, Centre CYCERON, IFR 47
关键词
Cerebral ischemia; Molecular; TGF-β;
D O I
10.1023/A:1025072013107
中图分类号
学科分类号
摘要
1. Necrosis and apoptosis are the two fundamental hallmarks of neuronal death in stroke. Nevertheless, thrombolysis, by using the recombinant serine protease t-PA, remains until now the only approved treatment of stroke in man. 2. Over the last years, the cytokine termed Transforming Growth Factor-β1 (TGF-β1) has been found to be strongly up-regulated in the central nervous system following ischemia-induced brain damage. 3. Recent studies have shown a neuroprotective activity of TGF-β1 against ischemia-induced neuronal death. In vitro, TGF-β1 protects neurons against excitotoxicity by inhibiting the t-PA-potentiated NMDA-induced neuronal death through a mechanism involving the up-regulation of the type-1 plasminogen activator inhibitor (PAI-1) in astrocytes. 4. In addition, TGF-β1 has been recently characterized as an antiapoptotic factor in a model of staurosporine-induced neuronal death through a mechanism involving activation of the extracellular signal-regulated kinase 1/2 (Erk1/2) and a concomitant increase phosphorylation of the antiapoptotic protein Bad. 5. Altogether, these observations suggest that either TGF-β signaling or TGF-β1-modulated genes could be good targets for the development of new therapeutic strategies for stroke in man.
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页码:539 / 550
页数:11
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