October 1998
Volume 39, Issue 11
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Articles  |   October 1998
Estrogen receptor expression in bovine and rat retinas.
Author Affiliations
  • K Kobayashi
    Department of Ophthalmology and Visual Science, Kyoto University Graduate School of Medicine, Japan.
  • H Kobayashi
    Department of Ophthalmology and Visual Science, Kyoto University Graduate School of Medicine, Japan.
  • M Ueda
    Department of Ophthalmology and Visual Science, Kyoto University Graduate School of Medicine, Japan.
  • Y Honda
    Department of Ophthalmology and Visual Science, Kyoto University Graduate School of Medicine, Japan.
Investigative Ophthalmology & Visual Science October 1998, Vol.39, 2105-2110. doi:
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    • Get Citation

      K Kobayashi, H Kobayashi, M Ueda, Y Honda; Estrogen receptor expression in bovine and rat retinas.. Invest. Ophthalmol. Vis. Sci. 1998;39(11):2105-2110.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

PURPOSE: To investigate the expression and distribution of estrogen receptor protein and mRNA in bovine and rat retinas. METHODS: Western blot analysis with an antiestrogen receptor monoclonal antibody (mAb) was used to detect estrogen receptor protein in the bovine retina. Immunohistochemistry with an antiestrogen receptor mAb and in situ hybridization with an oligodeoxynucleotide sequence coding for estrogen receptor were applied to study the cellular distribution of estrogen receptor protein and its mRNA in male bovine retina and rat retina of both sexes. RESULTS: Estrogen receptor protein was detected in bovine retina by Western blot analysis. Immunohistochemical staining with the antiestrogen receptor mAb was widespread throughout the neural retina. Specific staining showed extensive distribution localizing in the nerve fiber layer, the ganglion cell layer, the inner nuclear layer, and the outer plexiform layer. Retinal pigment epithelium and choroid were also stained with the antiestrogen receptor mAb. By in situ hybridization, the expression of estrogen receptor mRNA was predominantly observed in ganglion cell layer, the inner nuclear layer, and outer portion of the outer nuclear layer. No significant difference was found between male and female rats in the immunostaining of retinas with the antiestrogen receptor mAb. CONCLUSIONS: This study provides the first evidence for the presence of estrogen receptor in bovine and rat retinas. Expression of estrogen receptor throughout the retina suggests that estrogen may have important functions in the retina.

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