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Transgenic overexpression of corticotropin releasing hormone provides partial protection against neurodegeneration in an in vivo model of acute excitotoxic stress.
Neuroscience 156, 712-721 (2008)
Corticotropin releasing hormone (CRH) is the central modulator of the mammalian hypothalamic-pituitaryadrenal (HPA) axis. In addition, CRH affects other processes in the brain including learning, memory, and synaptic plasticity. Moreover, CRH has been shown to play a role in nerve cell survival under apoptotic conditions and to serve as an endogenous neuroprotectant in vitro. Employing mice over-expressing murine CRH in the CNS, we observed a differential response of CRH-overexpressing mice (CRH-COEhom-Nes) to acute excitotoxic stress induced by kainate compared with controls (CRH-COEcon-Nes). Interestingly, CRH-overexpression reduced the duration of epileptic seizures and prevented kainate-induced neurodegeneration and neuro-inflammation in the hippocampus. Our findings highlight a neuroprotective action of CRH in vivo. This neuroprotective effect was accompanied by increased levels of brain-derived neurotrophic factor (BDNF) in CRH-COEhom-Nes mice, suggesting a potential role for BDNF in mediating CRH-induced neuroprotective actions against acute excitotoxicity in vivo.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
CRH; BDNF; excitotoxicity; neuroprotection
Language
Publication Year
2008
HGF-reported in Year
2008
ISSN (print) / ISBN
0306-4522
e-ISSN
1873-7544
Journal
Neuroscience
Quellenangaben
Volume: 156,
Issue: 3,
Pages: 712-721
Publisher
International Brain Research Organization, Elsevier
Reviewing status
Peer reviewed
Institute(s)
Institute of Developmental Genetics (IDG)
POF-Topic(s)
30204 - Cell Programming and Repair
Research field(s)
Genetics and Epidemiology
PSP Element(s)
G-500500-001
Scopus ID
53249111240
Erfassungsdatum
2008-12-31