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Abstract Title:

Retinal oxidative stress induced by intraocular hypertension in rats may be ameliorated by brimonidine treatment and N-acetyl cysteine supplementation.

Abstract Source:

Dig Dis Sci. 2008 Jul 10. PMID: 20010244

Abstract Author(s):

Gokhan Ozdemir, Fatma Inanc Tolun, Mustafa Gul, Secil Imrek

Abstract:

PURPOSE: To investigate the effect of brimonidine and N-acetyl cysteine (NAC) on retinal oxidative status under ocular hypertension. MATERIALS AND METHODS: Ocular hypertension is produced in right eyes of 60 rats through intraocular injection of sodium hyaluronate. The left eyes received intracameral saline as sham. Twenty right eyes (brimonidine group) received topical brimonidine twice a day for a week. Other 20 eyes received intraperitoneal NAC (NAC group) once a day. Another group of 20 eyes were followed without any drugs but only intracameral sodium hyaluronate (sodium hyaluronate group) into right eyes. RESULTS: Intraocular injection of sodium hyaluronate increased intraocular pressure for a week and caused retinal peroxidation and decreased glutathione peroxidase and catalase levels. Brimonidine and NAC treatment reversed the retinal oxidative stress created by high intraocular pressure. CONCLUSIONS: Brimonidine and NAC supplementation provide antioxidative properties to retina and decrease retinal damage induced by ocular hypertension.

Study Type : Animal Study

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Sayer Ji
Founder of GreenMedInfo.com

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