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Brain Res Mol Brain Res. 1996 Dec 31;43(1-2):21-9.

The role of the cyclic AMP-responsive element binding protein (CREB) in hypoxic-ischemic brain damage and repair.

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  • 1Department of Pharmacology and Clinical Pharmacology, Faculty of Medicine and Health Science, University of Auckland, New Zealand.

Abstract

The cyclic AMP-responsive element binding protein (CREB) is a basally expressed, post-translationally activated transcription factor that has been implicated in the trans-activation of a number of genes in response to cAMP and calcium signals. A unilateral hypoxic-ischemic (HI) injury in the 21 day old rat was used to examine a potential role for CREB (phosphorylated and unphosphorylated) in neuronal programmed cell death or cell survival. The selectively vulnerable CAI pyramidal cells, which undergo delayed neuronal death following mild HI, show a loss of CREB and phosphorylated CREB (pCREB) immunoreactivity on the injured side 48 and 72 h following HI. In contrast the resistant dentate granule cells and cortical cells produce a bimodal increase in pCREB immunoreactivity, peaking 6 and 48 h following HI. The fact that cells surviving the HI insult are showing increased activation of CREB suggests that this protein might be involved in the process of neuroprotection.

PMID:
9037515
[PubMed - indexed for MEDLINE]
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