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  • Title: Immunohistochemical analysis of myelination following hemicranial irradiation in neonatal rats.
    Author: Sato G, Tanaka R, Akiyama K, Yamanaka R, Sato M.
    Journal: Neurosci Lett; 2003 Dec 19; 353(2):131-4. PubMed ID: 14664918.
    Abstract:
    The mechanism of radiation-induced diffuse brain injury was investigated in a neonatal rat hemicranial irradiation model using immunohistochemistry. Neonatal Fischer 344 rats received hemicranial irradiation with a single dose of 15 Gy, and appropriate combinations of myelin markers were used to assess the myelin damage at various stages of myelin development. Antibodies against myelin basic protein, 2',3'-cyclic nucleotide 3'-phosphodiesterase and myelin oligodendrocyte glycoprotein were used, and the density of the antibody-positive fibers was classified into five categories. Statistical analysis showed significant differences between irradiated and unirradiated hemispheres. The differences decreased and myelination approached normality by postnatal day 70. These results show that myelination in the neonatal rat can recover from the developmental delay caused by a single 15 Gy dose of hemicranial irradiation.
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