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Published on: November 28, 2012
The Protective Effect of Sesamol in the Selenite-induced Experimental Cataract Model
Burak Turgut1, İrfan Ergen2, Nevin İlhan3
1Yüksek İhtisas University Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey.
Insights
Sesamol demonstrated protective effects against experimental cataracts in rats. This antioxidant compound significantly reduced cataract formation by improving lens health and reducing oxidative stress.
Area of Science:
- Biochemistry
- Ophthalmology
- Pharmacology
Background:
- Cataract is a leading cause of vision impairment globally.
- Oxidative stress plays a crucial role in cataractogenesis.
- Sesamol, a natural compound, possesses antioxidant properties.
Purpose of the Study:
- To evaluate the potential of sesamol in preventing sodium selenite-induced experimental cataracts.
- To investigate the impact of sesamol on oxidative stress markers in the lens.
Main Methods:
- An experimental cataract model was established in Sprague Dawley rat pups using sodium selenite.
- Rats were treated with either saline (sham group) or sesamol.
- Lens biochemical analysis included reduced glutathione (GSH), malondialdehyde (MDA), total antioxidant status (TAS), and total oxidant status (TOS).
Main Results:
- Sesamol treatment significantly reduced the mean cataract grade compared to the sham group.
- Sesamol administration led to significantly higher GSH and TAS levels in the lens.
- Sesamol treatment resulted in significantly lower MDA and TOS levels in the lens.
Conclusions:
- Sesamol exhibits significant protective effects against experimental cataracts.
- Sesamol ameliorates oxidative stress in the lens by modulating GSH, TAS, TOS, and MDA levels.
- Sesamol holds potential as a therapeutic agent for cataract prevention.
Objectives:
To investigate the potential protective effects of sesamol in an experimental cataract model.
Materials And Methods:
Twenty-one Spraque Dawley rat pups were randomly assigned into three groups, seven rats in each. All the rats except for those in the control group were injected subcutaneously with a single dose of sodium selenite on postpartum day 9. On days 10-14, rats in the sham group were intraperitoneally administered 50 mg/kg/day saline solution, while rats in the sesamol group were given 50 mg/kg/day sesamol by the same route. Following cataract grading, the lenses and capsules were extracted and the mean levels of reduced glutathione (GSH), malondialdehyde (MDA), total antioxidant status (TAS) and total oxidant status (TOS) in lens supernatants were biochemically analyzed.
Results:
The control group did not show any development of cataract. It was found that the mean cataract grade in the sesamol group was significantly lower than that of the sham group (p<0.05). The mean GSH level and TAS in the sesamol group were significantly higher than those of the sham group while the mean TOS and MDA level in the sesamol group were significantly lower than those of the sham group (p<0.05).
Conclusion:
Our study shows that sesamol reduces TOS and MDA level and increases TAS and GSH level in the lens and inhibits cataract formation.
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