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Suppressive effects of indomethacin on thermally induced neovascularization of rabbit corneas
Abstract:
In 16 rabbits with bilateral corneal burns, indomethacin was administered topically to one eye on each day after the lesion was made to determine the effect of a prostaglandin inhibitor on the corneal neovascular response to experimental thermal burns. Comparison of the two eyes showed a reduction of both hyperemia and neovascularization in indomethacin-treated eyes during the first five days after injury. Histologic observations during this period showed a reduction in polymorphonuclear cell infiltration in the treated corneas. Inhibition of prostaglandin synthesis by indomethacin apparently led to a reduction in the inflammatory response and the subsequent corneal neovascularization.
Insights
Topical indomethacin reduced corneal inflammation and new blood vessel growth following thermal burns in rabbits. This prostaglandin inhibitor demonstrated significant therapeutic potential for corneal injury.
Area of Science:
- Ophthalmology
- Inflammation Research
- Pharmacology
Background:
- Corneal thermal burns can lead to significant inflammation and neovascularization.
- Prostaglandins play a role in the inflammatory response and neovascularization processes.
- Understanding inhibitors of prostaglandin synthesis may offer therapeutic benefits for corneal injuries.
Purpose of the Study:
- To investigate the effect of indomethacin, a prostaglandin inhibitor, on corneal neovascularization.
- To assess indomethacin's impact on hyperemia and inflammatory cell infiltration after thermal burns.
Main Methods:
- Bilateral corneal thermal burns were induced in 16 rabbits.
- Topical indomethacin was applied daily to one eye of each rabbit.
- Corneal hyperemia, neovascularization, and polymorphonuclear cell infiltration were evaluated.
Main Results:
- Indomethacin treatment significantly reduced corneal hyperemia and neovascularization.
- A decrease in polymorphonuclear cell infiltration was observed in indomethacin-treated corneas.
- These effects were noted during the first five days post-injury.
Conclusions:
- Topical indomethacin effectively inhibits corneal neovascularization following thermal injury in rabbits.
- Inhibition of prostaglandin synthesis by indomethacin reduces the inflammatory response and subsequent neovascularization.
- Indomethacin shows promise as a therapeutic agent for managing corneal burns.