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Local Treatment of Hydrogen-Rich Saline Promotes Wound Healing In Vivo by Inhibiting Oxidative Stress via Nrf-2/HO-1 Pathway.

Abstract
Wound healing is a complex dynamic process involving a large number of biological events. Excessive oxidative stress is a key factor delaying wound healing. Hydrogen is an antioxidant, anti-inflammatory, and antiapoptotic medical gas with safety, effectiveness, and penetrability. However, the effects of local treatment of hydrogen on wound healing and its potential mechanisms remain unclear. In this study, Kunming (KM) mice were used to set up a wound model. All the mice were randomly divided into the control, the local treatment with saline group, the local treatment with the hydrogen-rich saline group, and the intraperitoneal injection of the hydrogen-rich saline group. To evaluate the impact of hydrogen-rich saline on wound healing, we assessed the wound healing rate, wound closure time, histomorphology, oxidative stress indicators, inflammatory cytokines, the apoptosis index, and the expression of the nuclear factor-erythroid-related factor 2(Nrf-2). Furthermore, the immortalized nontumorigenic human epidermal (HaCaT) cells were chosen to investigate the therapeutic effects of hydrogen-rich medium on oxidative stress and its underlying mechanisms. The results showed that local treatment of hydrogen-rich saline shortened wound closure time and reduced the level of proinflammatory cytokines and lipid peroxidation. Meanwhile, it decreased the cell apoptosis index and increased the Nrf-2 expression. Besides, hydrogen-rich medium relieved the oxidative stress via the activation of the Nrf-2/heme oxygenase-1 (HO-1) pathway. In conclusion, local treatment of hydrogen-rich saline exhibits the healing-promoting function through antioxidant, anti-inflammatory, and antiapoptotic effects. Hydrogen relieves the oxidative stress in the wound microenvironment via Nrf-2/HO-1 signaling pathway. This study may offer a new strategy to promote wound healing and a new perspective to illustrate the mechanism of wound healing.
AuthorsYujie Li, Chengcheng Shen, Xin Zhou, Jianghe Zhang, Xiaoyue Lai, Yiming Zhang
JournalOxidative medicine and cellular longevity (Oxid Med Cell Longev) Vol. 2022 Pg. 2949824 ( 2022) ISSN: 1942-0994 [Electronic] United States
PMID35300173 (Publication Type: Journal Article)
CopyrightCopyright © 2022 Yujie Li et al.
Chemical References
  • Antioxidants
  • Cytokines
  • NF-E2-Related Factor 2
  • Nfe2l2 protein, mouse
  • Saline Solution
  • Hydrogen
  • Heme Oxygenase-1
Topics
  • Animals
  • Antioxidants (chemistry, pharmacology)
  • Cytokines (metabolism)
  • HaCaT Cells
  • Heme Oxygenase-1 (metabolism)
  • Humans
  • Hydrogen (analysis)
  • Male
  • Mice
  • NF-E2-Related Factor 2 (metabolism)
  • Oxidative Stress
  • Saline Solution (chemistry, pharmacology)
  • Skin (drug effects, metabolism)
  • Wound Healing

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