Archives of Histology and Cytology
Online ISSN : 1349-1717
Print ISSN : 0914-9465
ISSN-L : 0914-9465
Original articles
Localization and expression of chondromodulin-I in the rat cornea
Atsushi Fukushima, Haruko Funaki, Kiyoshi Yaoeda, Takayuki Tanaka, Motohiro Shirakashi, Yutaka Yoshida, Eishin Yaoita, Haruki Abe, Tadashi Yamamoto
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2003 Volume 66 Issue 5 Pages 445-452

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Abstract

The localization and expression in the rat cornea of chondromodulin-I (ChM-I), an inhibitory angiogenesis factor, were examined by immunohistochemistry, Western blot analysis, ribonuclease protection assay, and real-time PCR assay. We found immunoreactivity for ChM-I in the epithelial layer but not the stromal layer or endothelial layer in the cornea, in addition to the positive ChM-I immunoreactivity in other sites in the eye such as the sclera, retina, and ciliary body. The ChM-I immunoreactivity was most intense at the outside of the basal cells and in their cytoplasm while the intensity of the immunoreactivity decreased gradually from the wing cells to the superficial cells in the corneal epithelial layer. No reactivity however, was detected in the Bowman’s membrane or conjunctival epithelial cells which had continuity with the corneal epithelial cells. The expression of ChM-I mRNA was demonstrated in the cornea at one-third less intensity than that in the sclera with choroids and retinal pigment epithelium by ribonuclease protection assay and real-time PCR. ChM-I in the corneal epithelial layer may prevent neovascularization and maintain avascularity in the cornea.

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© 2003 by International Society of Histology and Cytology
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Archivum histologicum japonicum

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