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Effects of alpha-MSH on corneal epithelial lesions in rats
Josip Pavan1, Adrian Lukenda, Nikola Stambuk
1University of Zagreb, Dubrava University Hospital, Department of Ophthalmology, Zagreb, Croatia. josip.pavan@g.htnet.hr
Abstract:
We investigated the influence of alpha-melanocyte stimulating hormone (alpha-MSH) on the healing of corneal epithelial lesions in male Wistar rats. The lesions were induced by abrading corneal epithelium with a surgical lancet under a biomicroscope. Before the abrasion corneal epithelium was softened with 40% ethanol. alpha-MSH drops in a concentration of 1 x 10(-4) mg/mL significantly promoted epithelial healing, when compared to the control group treated with 0.9% NaCl. Significant reduction of ocular irritation was also observed. Topical alpha-MSH medication could promote the healing of corneal wounds and reduce local inflammatory response without the major side effects of the corticosteroid therapy.
Insights
Alpha-melanocyte stimulating hormone (alpha-MSH) effectively promotes corneal epithelial healing in rats. This hormone also reduces ocular irritation, offering a potential alternative to corticosteroid treatments for eye injuries.
Area of Science:
- Ophthalmology
- Wound Healing
- Pharmacology
Background:
- Corneal epithelial defects are common ocular injuries.
- Current treatments may have side effects.
- Alpha-melanocyte stimulating hormone (alpha-MSH) has shown anti-inflammatory properties.
Purpose of the Study:
- To investigate the effect of alpha-MSH on corneal epithelial wound healing.
- To assess the impact of alpha-MSH on ocular irritation.
- To compare alpha-MSH efficacy with a saline control.
Main Methods:
- Corneal epithelial lesions were induced in male Wistar rats.
- Lesions were treated with topical alpha-MSH (1 x 10(-4) mg/mL) or 0.9% NaCl.
- Healing and ocular irritation were monitored.
Main Results:
- Alpha-MSH significantly accelerated corneal epithelial healing compared to the control.
- A significant reduction in ocular irritation was observed with alpha-MSH treatment.
- No major side effects were noted with topical alpha-MSH.
Conclusions:
- Topical alpha-MSH promotes corneal wound healing.
- Alpha-MSH reduces local inflammatory responses in the eye.
- Alpha-MSH represents a promising therapeutic agent for corneal injuries, potentially avoiding corticosteroid side effects.
