NHE1 expression at wound margins increases time-dependently during physiological healing

Area of Science:

• Cell biology
• Wound healing research
• Biochemistry

Background:

• Wound repair involves inflammation, proliferation, and remodeling.
• Sodium hydrogen exchanger 1 (NHE1) is vital for epidermal barrier function and pH regulation.
• Extracellular pH (pHe) on wounds initially increases then decreases during healing.

Discussion:

• NHE1 expression is low at wound edges immediately after injury.
• NHE1 expression significantly rises as physiological healing progresses.
• This dynamic NHE1 expression pattern mirrors the observed decrease in wound surface pHe.

Key Insights:

• NHE1 plays a critical, time-dependent role in regulating wound surface pH during healing.
• Spatial NHE1 patterns contribute to pH gradients in chronic wounds.
• NHE1 represents a potential therapeutic target for modulating wound pH in both acute and chronic conditions.

Outlook:

• Further investigation into NHE1's precise mechanisms in wound healing.
• Exploring therapeutic strategies targeting NHE1 to optimize wound pH and promote healing.
• Translating findings on NHE1 and pH regulation into clinical applications for wound care.