Adrenergic Modulation of Cutaneous Wound Healing

The repair of skin following injury is orchestrated by a complex interplay of inflammatory signals, cell migration and vascular remodelling. Among the key regulators are catecholamines—adrenaline and noradrenaline—released by sympathetic nerve endings or synthesised locally by epidermal cells. These mediators act through adrenergic receptors, notably the beta2-adrenoceptor, to influence inflammation, keratinocyte migration and angiogenesis. Activation of specific receptor subtypes can either delay re-epithelialisation and prolong inflammation or, when blocked, accelerate barrier restoration and tissue regeneration. Stress-induced systemic elevation of epinephrine has been shown to impair keratinocyte motility and delay healing, whereas targeted antagonism of beta-adrenergic receptors restores migratory behaviour and improves wound closure. More recent findings reveal that non-traditional modulators such as bacterial trace amines and repurposed cardiovascular agents can modulate adrenergic signalling to enhance healing outcomes. Ongoing research seeks to define receptor subtype-specific strategies that minimise scarring, optimise re-vascularisation and address chronic wounds across diverse patient populations.

Research from Nature Portfolio

Recent studies have demonstrated that trace amines produced by resident skin bacteria act as natural antagonists at beta2-adrenoceptors, abrogating the inhibitory effect of epinephrine on keratinocyte migration and accelerating wound closure in murine models. This work underscores the therapeutic potential of harnessing microbial metabolites to rebalance local adrenergic signalling. An accompanying clinical investigation explored topical application of a beta-blocker following fractional carbon dioxide laser treatment for atrophic acne scars, reporting enhanced tissue regeneration with a favourable safety profile. These findings highlight the promise of topical adrenergic modulation in both acute reparative and scar-remodelling contexts.

Adrenergic Modulation of Cutaneous Wound Healing publication trend

The graph below shows the total number of articles in adrenergic modulation of cutaneous wound healing across all publications each year (not limited to Nature Index journals).

Technical terms

Adrenergic receptor: A cell-surface receptor that mediates the effects of adrenaline and noradrenaline in target tissues.

Beta2-adrenoceptor: A subtype of adrenergic receptor that modulates inflammation, cell migration and vasodilatation in skin wound repair.

Keratinocyte: The primary epithelial cell of the epidermis responsible for barrier restoration and wound closure.

Re-epithelialisation: The process by which epidermal cells proliferate and migrate to reform the skin surface after injury.

Angiogenesis: Formation of new blood vessels within the wound bed to supply nutrients and cells during healing.

Trace amine: A biogenic amine produced by skin bacteria that can antagonise adrenergic receptors and influence wound repair.

References

1. β-Adrenergic Receptor Antagonists Accelerate Skin Wound Healing EVIDENCE FOR A CATECHOLAMINE SYNTHESIS NETWORK IN THE EPIDERMIS*. Journal of Biological Chemistry (2006).
2. β2AR Antagonists and β2AR Gene Deletion Both Promote Skin Wound Repair Processes. Journal of Investigative Dermatology (2012).
3. Stress-Mediated Increases in Systemic and Local Epinephrine Impair Skin Wound Healing: Potential New Indication for Beta Blockers. PLOS Medicine (2009).
4. Trace amines produced by skin bacteria accelerate wound healing in mice. Communications Biology (2020).
5. Topical timolol maleate 0.5% after fractional carbon dioxide laser versus fractional carbon dioxide laser alone in treatment of acne scars: split face comparative study. Scientific Reports (2023).
6. Sympathetic System in Wound Healing: Multistage Control in Normal and Diabetic Skin. International Journal of Molecular Sciences (2023).
7. One Molecule, Many Faces: Repositioning Cardiovascular Agents for Advanced Wound Healing. Molecules (2024).
8. β2-Adrenoceptor Activation Modulates Skin Wound Healing Processes to Reduce Scarring. Journal of Investigative Dermatology (2014).