The effect of dietary antioxidant supplementation in patients with glaucoma

Noriko Himori, Maki Inoue Yanagimachi, Kazuko Omodaka, Yukihiro Shiga, Satoru Tsuda, Hiroshi Kunikata, Toru Nakazawa

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: Oxidative stress may be a risk factor for glaucoma, and many previous reports have suggested that antioxidants could be a promising treatment. Here, we investigated the effects of a novel supplement containing three food-derived antioxidants (hesperidin, crocetin, and Tamarindus indica) on markers of oxidative stress in patients with glaucoma. Patients and Methods: This study had a prospective, single arm design. Thirty Japanese glaucoma patients were recruited and given 4 tablets with ample water twice a day for 8 weeks. The treatment was stopped, and the subjects were followed for an additional 8 weeks. We measured biological antioxidant potential (BAP) with a free radical analyzer. We also measured urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG; a marker of oxidative DNA damage). Clinical laboratory data were measured in venous blood samples. Clinical parameters were also recorded. Comparisons used a one-way analysis of variance (ANOVA) followed by Dunnett’s test. Results: The 8-OHdG level was not reduced. We also divided the patients into groups with high or low oxidative stress. In patients with relatively high oxidative stress, the 8-OHdG level was significantly reduced at weeks 4, 8, 12, and 16 (P < 0.001, P < 0.01, P < 0.01, P < 0.01), and BAP was significantly elevated at weeks 8 and 12 (P = 0.03, P = 0.04). In patients with relatively low oxidative stress, the 8-OHdG level was not significantly reduced during supplement intake but was significantly elevated at weeks 12 and 16 (P =0.03, P = 0.04), while BAP was not significantly elevated. Conclusion: An 8-week oral course of antioxidant supplementation was effective in patients with a high oxidative stress level. Dietary supplementation could hold promise in the treatment of systemic oxidative stress-related diseases.

Original languageEnglish
Pages (from-to)2293-2300
Number of pages8
JournalClinical Ophthalmology
Volume15
DOIs
Publication statusPublished - 2021

Keywords

  • 8-OHdG
  • Glaucoma
  • Oxidative stress
  • Supplement

ASJC Scopus subject areas

  • Ophthalmology

Fingerprint

Dive into the research topics of 'The effect of dietary antioxidant supplementation in patients with glaucoma'. Together they form a unique fingerprint.

Cite this