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Archives of ophthalmology (Chicago, Ill. : 1960) 1994-Dec

Treatment of keratoconjunctivitis sicca in rabbits with 3-isobutyl-1-methylxanthine.

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J P Gilbard

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요약

OBJECTIVE

To examine the effects of topical 3-isobutyl-1-methylxanthine treatment on tear-film osmolarity, conjunctival goblet-cell densities, and corneal epithelial glycogen levels in a rabbit model for keratoconjunctivitis sicca.

METHODS

Keratoconjunctivitis sicca was surgically induced in the right eyes of 16 rabbits. In a masked protocol, eight of these operated-on eyes underwent treatment for 12 weeks with a 3.0-mmol solution of 3-isobutyl-1-methylxanthine. The remaining eight operated-on eyes were left untreated and served as controls.

RESULTS

The 3-isobutyl-1-methylxanthine treatment resulted in a rapid and significant decrease in tear osmolarity and sodium (P < .5) and potassium levels (P < .05) and a significant increase in conjunctival goblet-cell densities and corneal epithelial glycogen levels compared with untreated and operated-on controls (P < .001).

CONCLUSIONS

3-Isobutyl-1-methylxanthine rapidly and significantly decreased tear-film osmolarity in this rabbit model for keratoconjunctivitis sicca and restored conjunctival goblet-cell densities and corneal glycogen levels, thus reversing the disease process.

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