Increased serum total antioxidant status and decreased urinary 8-hydroxy-2′-deoxyguanosine levels in patients with normal-tension glaucoma

Kenya Yuki, Dogru Murat, Itaru Kimura, Kazuo Tsubota

研究成果: Article査読

31 被引用数 (Scopus)

抄録

Purpose:- To investigate the amount of systemic oxidative stress-related DNA damage and serum total antioxidant status of patients with normal-tension glaucoma compared with healthy controls. Methods:- Forty-three patients with normal-tension glaucoma selected from 60 consecutive newly diagnosed patients with primary open-angle glaucoma were enrolled. Each patient's intraocular pressure (IOP) was measured seven times over a 24-hour period. Those whose highest IOP was over 21mmHg were excluded. Forty control subjects were recruited. The serum total antioxidant status was assessed colorimetrically by its ability to reduce the generation of the radical cation ABTS (2,2-azinobis-3-ethylbenzthiazoline sulphonate). The urinary 8-hydroxy-2′-deoxyguanosine was measured as a marker of oxidative DNA damage and normalized to creatinine. The results were compared between healthy subjects and patients with normal-tension glaucoma. Results:- The control and normal-tension glaucoma groups did now show significant differences for age, gender, serum fructosamine, cholesterol and triglyceride levels; systolic and diastolic blood pressure, body mass index; and prevalence of hypertension. The serum total antioxidant status was significantly higher (p=0.01) and the urinary 8-hydroxy-2′-deoxyguanosine/creatinine level significantly lower (p=0.03) in the patients with normal-tension glaucoma compared with the controls. Even after we adjusted the data for independent variables, the incidence of normal-tension glaucoma was significantly correlated with high serum total antioxidant levels (p=0.03; odds ratio, 1.007; 95% confidence interval, 1.001-1.013) and low urinary 8-hydroxy-2′-deoxyguanosine/creatinine (p=0.02; odds ratio 0.76; 95% confidence interval, 0.61-0.96). Conclusions:- Increased serum total antioxidant and decreased 8-hydroxy-2′- deoxyguanosine may reflect compensatory alterations in response to increased systemic oxidative stress in patients with normal-tension glaucoma.

本文言語English
ページ(範囲)e259-e264
ジャーナルActa ophthalmologica
88
7
DOI
出版ステータスPublished - 2010 11月

ASJC Scopus subject areas

  • 眼科学

フィンガープリント

「Increased serum total antioxidant status and decreased urinary 8-hydroxy-2′-deoxyguanosine levels in patients with normal-tension glaucoma」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル