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Gene Network Analysis to Determine the Effects of Antioxidant Treatment in a Rat Model of Neonatal Hypoxic-Ischemic Encephalopathy

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Abstract

Neonatal hypoxic-ischemic (HI) encephalopathy can lead to severe brain damage, and is a common cause of neurological handicaps in adulthood. HI can be resolved by the administration of an antioxidant such as 3-methyl-1-phenyl-2-pyrazolin-5-one (MCI-186). In the present study, we performed comprehensive gene expression and gene network analyses using a DNA microarray to elucidate the molecular events responsible for the selective vulnerability of neurons in neonatal HI brain insult and to examine the underlying mechanisms of the effect of MCI-186 on the pathophysiological events in this condition. We used the modified Levine method (Rice model), which has been widely used as an animal model of this condition. A large difference in gene expression was observed between the Rice model and the control group. Up- and downregulated genes after the HI brain insult were mainly related to immune responses and cell death, and neuronal activity, respectively. The effect of MCI-186 administration on gene expression was much less than and contrary to that of the HI brain insult, reflecting the protective effect of MCI-186 in HI brain insult.

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Acknowledgments

We are grateful to Dr. Mutsumi Kanamori (RIKEN OSC) for her technical advice and thank Ms. Ritsuko Ozawa for the technical assistance. This work was supported by a grant from the Core Research for Evolutionary Science and Technology (CREST) program of the Japan Science and Technology Agency (JST) and an in-house budget of RIKEN.

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Correspondence to Toshio Kojima.

Electronic Supplementary Materials

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Supplementary Table S1

RICE cluster0 genes (XLS 64 kb)

Supplementary Table S2

RICE cluster1 genes (XLS 146 kb)

Supplementary Table S3

RICE cluster2 genes (XLS 62 kb)

Supplementary Table S4

MCI-186 upregulated genes (XLS 21 kb)

Supplementary Table S5

MCI-186 downregulated genes (XLS 16 kb)

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Kojima, T., Ueda, Y., Adati, N. et al. Gene Network Analysis to Determine the Effects of Antioxidant Treatment in a Rat Model of Neonatal Hypoxic-Ischemic Encephalopathy. J Mol Neurosci 42, 154–161 (2010). https://doi.org/10.1007/s12031-010-9337-x

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  • DOI: https://doi.org/10.1007/s12031-010-9337-x

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