Hydrogen and N-acetyl-L-cysteine rescue oxidative stress-induced angiogenesis in a mouse corneal alkali-burn model

Miyuki Kubota, Shigeto Shimmura, Shunsuke Kubota, Hideyuki Miyashita, Naoko Kato, Kousuke Noda, Yoko Ozawa, Tomohiko Usui, Susumu Ishida, Kazuo Umezawa, Toshihide Kurihara, Kazuo Tsubota

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

PURPOSE. To investigate the role of reactive oxygen species (ROS) as the prime initiators of the angiogenic response after alkali injury of the cornea and observe the effects of antioxidants in preventing angiogenesis. METHODS. The corneal epithelia of SOD-1-deficient mice or wild-type (WT) mice were removed after application of 0.15 N NaOH to establish the animal model of alkali burn. ROS production was semiquantitatively measured by dihydroethidium (DHE) fluorescence. Angiogenesis was visualized by CD31 immunohistochemistry. The effects of the specific NF-κB inhibitor DHMEQ, the antioxidant N-acetyl-L-cysteine (NAC), and hydrogen (H2) solution were observed. RESULTS. ROS production in the cornea was enhanced immediately after alkali injury, as shown by increased DHE fluorescence (P< 0.01). NF-κB activation and the upregulation of vascular endothelial growth factor (VEGF) and monocyte chemoattractant protein-1 (MCP-1) were significantly enhanced (P< 0.01), leading to a significantly larger area of angiogenesis. Angiogenesis in SOD-1-/- mice corneas were significantly higher in WT mice (P<0.01), confirming the role of ROS. Pretreatment with the specific NF-κB inhibitor DHMEQ or the antioxidant NAC significantly reduced corneal angiogenesis by downregulating the NF-κB pathway (P<0.01) in both WT and SOD-1-/- mice. Furthermore, we showed that irrigation of the cornea with hydrogen (H2) solution significantly reduced angiogenesis after alkali-burn injury (P<0.01). CONCLUSIONS. Immediate antioxidant therapy with H2-enriched irrigation solution is a new potent treatment of angiogenesis in cornea to prevent blindness caused by alkali burn.

Original languageEnglish
Pages (from-to)427-433
Number of pages7
JournalInvestigative Ophthalmology and Visual Science
Volume52
Issue number1
DOIs
Publication statusPublished - 2011 Jan

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Acetylcysteine
Alkalies
Burns
Hydrogen
Oxidative Stress
Cornea
Reactive Oxygen Species
Antioxidants
Fluorescence
Corneal Neovascularization
Corneal Epithelium
Chemokine CCL2
Wounds and Injuries
Blindness
Vascular Endothelial Growth Factor A
Up-Regulation
Down-Regulation
Animal Models
Immunohistochemistry
Therapeutics

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience
  • Medicine(all)

Cite this

Hydrogen and N-acetyl-L-cysteine rescue oxidative stress-induced angiogenesis in a mouse corneal alkali-burn model. / Kubota, Miyuki; Shimmura, Shigeto; Kubota, Shunsuke; Miyashita, Hideyuki; Kato, Naoko; Noda, Kousuke; Ozawa, Yoko; Usui, Tomohiko; Ishida, Susumu; Umezawa, Kazuo; Kurihara, Toshihide; Tsubota, Kazuo.

In: Investigative Ophthalmology and Visual Science, Vol. 52, No. 1, 01.2011, p. 427-433.

Research output: Contribution to journalArticle

Kubota, Miyuki ; Shimmura, Shigeto ; Kubota, Shunsuke ; Miyashita, Hideyuki ; Kato, Naoko ; Noda, Kousuke ; Ozawa, Yoko ; Usui, Tomohiko ; Ishida, Susumu ; Umezawa, Kazuo ; Kurihara, Toshihide ; Tsubota, Kazuo. / Hydrogen and N-acetyl-L-cysteine rescue oxidative stress-induced angiogenesis in a mouse corneal alkali-burn model. In: Investigative Ophthalmology and Visual Science. 2011 ; Vol. 52, No. 1. pp. 427-433.
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AU - Shimmura, Shigeto

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AU - Kato, Naoko

AU - Noda, Kousuke

AU - Ozawa, Yoko

AU - Usui, Tomohiko

AU - Ishida, Susumu

AU - Umezawa, Kazuo

AU - Kurihara, Toshihide

AU - Tsubota, Kazuo

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