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  • Title: Immunohistochemical proof of intraneural localization of herpes simplex virus in experimental retinitis.
    Author: Matsushima M, Uyama M, Ohyama A, Ueyama T, Sugimoto T.
    Journal: Jpn J Ophthalmol; 1995; 39(2):143-51. PubMed ID: 8538070.
    Abstract:
    A unilateral intravitreal inoculation of herpes simplex virus type 1 (HSV-1) induced bilateral retinitis and encephalitis in the rat. Immunohistochemistry was employed to clarify the pathway of transmission of HSV-1 from the inoculated eye to the contralateral eye, and to identify localization of the viral antigen in the retina, optic nerve and brain. At an early stage of the post-inoculation period, HSV-1 immunoreactivity was first seen in the cytoplasm of Müller cells and then in various cells of the inner nuclear layer in the inoculated eye. At a later stage, HSV-1 immunoreactivity was seen in some retinal ganglion cells and optic nerve fibers in the inoculated eye. In the brain, HSV-1 was found in the optic chiasm, bilateral primary visual centers (bilateral suprachiasmatic nuclei, bilateral lateral geniculate nuclei, bilateral superior colliculus and bilateral pretectum) and bilateral visual cortex. HSV-1 was also demonstrated in the retinal ganglion cells, neural cells in the inner nuclear layer, and Müller cells in the contralateral eye. We found that HSV-1 antigen in the retina of the contralateral eye was transmitted through the optic nerve, visual pathway and nuclei, but not through the blood stream.
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