Neuroglobin protects neurons against oxidative stress in global ischemia
- Authors
- Li, Richard Changxun; Guo, Shang Zhi; Lee, Seung Kwan; Gozal, David
- Issue Date
- 11월-2010
- Publisher
- SAGE PUBLICATIONS INC
- Keywords
- global ischemia; hippocampus; neuroglobin; neuron; oxidative stress; transgenic mouse
- Citation
- JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM, v.30, no.11, pp.1874 - 1882
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM
- Volume
- 30
- Number
- 11
- Start Page
- 1874
- End Page
- 1882
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/115484
- DOI
- 10.1038/jcbfm.2010.90
- ISSN
- 0271-678X
- Abstract
- Neuroglobin (Ngb) is a recently discovered globin that affords protection against hypoxic/ischemic-induced cell injury in brain. Hypoxic/ischemic injury is associated with accumulation of reactive oxygen species (ROS) and/or reactive nitrogen species (RNS). In previous studies, we found that Ngb has antioxidative properties, and protects PC-12 cells against hypoxia-and beta-amyloid-induced cell death. To further delineate the potential role of Ngb in protection against cerebral ischemia-reperfusion injury in vivo, we developed a transgenic mouse line that overexpresses Ngb. Hippocampal ischemia-reperfusion injury was induced by a 10-minute bilateral occlusion of the common carotid arteries, and the animal brains were assessed 3 days later. CA1 neural injury was determined by cresyl violet staining. Lipid peroxidation was assessed using a malonyldialdehyde assay kit, whereas ROS/RNS accumulation was determined by Het staining in the CA1 hippocampal region. Hippocampal Ngb mRNA and protein expressions were assessed by reverse transcriptase-PCR and western blotting, respectively. Neuroglobin was successfully overexpressed in the hippocampus of Ngb transgenic mice. After ischemia-reperfusion, CA1 ROS/RNS production and lipid peroxidation were markedly decreased in Ngb transgenic mice compared with wild-type mice. Furthermore, CA1 neuronal injury was also markedly reduced. Thus, Ngb may confer protection against ischemia-reperfusion injury in the brain through its intrinsic antioxidant properties. Journal of Cerebral Blood Flow & Metabolism (2010) 30, 1874-1882; doi:10.1038/jcbfm.2010.90; published online 23 June 2010
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