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Published on: March 24, 2023
Cutaneous sensitivity modulation by Aquaphilus dolomiae extract-G3 on in vitro models of neuro-inflammation
F Lestienne1, C Viodé1, I Ceruti1
1Department of Pharmacology, Pierre Fabre Dermo-Cosmétique, Toulouse Cedex 1, France.
Background:
Inflammatory skin disorders, including atopic dermatitis (AD), associated pruritus and sensitive skin, have a complex multifactorial pathogenesis including neurogenic inflammation involving the release in blood and skin of neurotransmitters such as substance P (SP).
Aims And Methods:
In vitro models evaluated the effect of the original biological extract of Aquaphilus dolomiae extract-G3 (ADE-G3) on cutaneous neurogenic inflammation.
Results:
ADE-G3 significantly inhibited SP-stimulated release of IL-1β and TNF-α from normal human epidermal keratinocytes; significantly and dose-dependently inhibited SP-stimulated activation of human mast cells; significantly inhibited veratridine-stimulated release of SP from human sensory neurons; modulated expression of genes involved in lipid synthesis, innate immunity, corneocyte scaffolding and epidermal differentiation in a histamine-sensitized reconstructed human epidermis model; and, when applied topically to ex vivo human explants, inhibited IL-8 and histamine release.
Conclusions:
Topically applied ADE-G3, once formulated, may improve neuro-inflammation in patients with inflammatory skin disorders.
