Hyperbaric oxygen potentiates diabetic wound healing by promoting fibroblast cell proliferation and endothelial cell angiogenesis.

Abstract

BACKGROUND:

Diabetic foot ulcer (DFU), one of the diabetic complications, brings high burden to diabetic patients. Hyperbaric oxygen therapy (HBOT) has been proven to be an effective clinical method for the treatment of DFU. However, the mechanisms still to be elucidated.

METHODS:

Diabetic foot mice model was established, and treated with hyperbaric oxygen. Haematoxylin & eosin (H&E) staining and Masson's trichrome staining were used for the analysis of wound healing. Human skin fibroblast (HSF) and human umbilical vein endothelial cell (HUVECS) were exposed to high glucose and hyperbaric oxygen for studying the mechanism of hyperbaric oxygen promoted wound healing in vitro. Wound healing assay, reactive oxygen species (ROS) assay, cell proliferation assay and tube formation assay were used for the analysis of wound healing. Quantitative-polymerase chain reaction (Q-PCR), Western blotting and enzyme-linked immunosorbent assay (ELISA) were used for the analysis of gene expression.

RESULTS:

HBOT facilitated wound healing in DFU mice model, and promoted the expression of HIF-1α, NF-κB, VEGFA, SDF-1, VEGFR2 and CXCR4. Hyperbaric oxygen promoted the proliferation, migration and ROS production, as well as the expression of SDF-1 and VEGFA in HSF. HBOT stimulated the proliferation, migration and tube formation, as well as the expression of CXCR4 and VEGFR2 in HUVECS.

CONCLUSION:

Hyperbaric oxygen potentiates angiogenesis and diabetic wound healing by activating HIF-1α signaling, so as to promote the expression of VEGF/SDF-1 in HSF and the expression of VEGFR/CXCR4 in HUVECS, ultimately to promote the proliferation of HSF and the angiogenesis of HUVECS.

• Authors: Xu Huang, Pengfei Liang, Bimei Jiang, Pihong Zhang, Wenchang Yu, Mengting Duan, Le Guo, Xu Cui, Mitao Huang, Xiaoyuan Huang
• Journal: Life sciences (Life Sci) Vol. 259 Pg. 118246 (Oct 15 2020) ISSN: 1879-0631 [Electronic] Netherlands
• PMID: 32791151 (Publication Type: Journal Article)
• Copyright: Copyright © 2020 Elsevier Inc. All rights reserved.

Chemical References

• NF-kappa B
• Vascular Endothelial Growth Factor A
• Streptozocin
• Vascular Endothelial Growth Factor Receptor-2

Topics

• Animals
• Cell Proliferation (drug effects)
• Diabetes Mellitus, Experimental (physiopathology, therapy)
• Diabetic Foot (metabolism, therapy)
• Endothelial Cells (drug effects, metabolism)
• Female
• Fibroblasts (metabolism)
• Human Umbilical Vein Endothelial Cells (metabolism)
• Humans
• Hyperbaric Oxygenation (methods)
• Male
• Mice
• Mice, Inbred C57BL
• NF-kappa B (metabolism)
• Neovascularization, Pathologic (metabolism)
• Neovascularization, Physiologic (drug effects, physiology)
• Signal Transduction
• Skin (metabolism)
• Streptozocin (pharmacology)
• Vascular Endothelial Growth Factor A (metabolism)
• Vascular Endothelial Growth Factor Receptor-2 (metabolism)
• Wound Healing (drug effects)