Tripeptide and hexapeptide topical as adjunct to nonablative fractional resurfacing for photodamage: A randomized split‐face trial

2020 ◽  
Vol 19 (12) ◽  
pp. 3245-3250
Author(s):  
Jordan V. Wang ◽  
Mitalee P. Christman ◽  
Hao Feng ◽  
Georgina Ferzli ◽  
Hana Jeon ◽  
...  
Keyword(s):  
Fractional Resurfacing ◽  
Split Face

Efficacy and safety of a novel water‐soluble herbal patch for acne vulgaris treatment: a randomized, assessor‐blinds controlled, intra‐individual split‐face comparative study

2021 ◽  
Author(s):  
Kulwipapat Jaturapisanukul ◽  
Montree Udompataikul ◽  
Silada kanolrungsee ◽  
Salinee Rojhirunsakool ◽  
Nanticha kamanamool ◽  
...  
Keyword(s):  
Comparative Study ◽  
Acne Vulgaris ◽  
Water Soluble ◽  
Efficacy And Safety ◽  
Split Face

scholarly journals A Rose Extract Protects the Skin against Stress Mediators: A Potential Role of Olfactory Receptors

Molecules ◽  
2020 ◽  
Vol 25 (20) ◽  
pp. 4743
Author(s):  
Romain Duroux ◽  
Anne Mandeau ◽  
Gaelle Guiraudie-Capraz ◽  
Yannick Quesnel ◽  
Estelle Loing
Keyword(s):  
Physiological Role ◽  
Olfactory Receptors ◽  
Major Constituent ◽  
Epidermal Keratinocytes ◽  
Functional Assay ◽  
Skin Explants ◽  
Stress Mediators ◽  
Double Blinded ◽  
Split Face

Olfactory receptors (ORs) are expressed and active in various human tissues, including the skin. Although the sense of smell plays an important physiological role in the regulation of mood and stress, a link between olfactive compounds, ORs, and skin stress has yet to be established. This study aims to investigate the role of newly identified skin ORs and agonists in the modulation of skin stress. Screening for odorant molecules was done with cAMP functional assay to identify OR agonists. RT-qPCR and immunofluorescence microscopy were conducted to identify and quantify ORs in epidermal keratinocytes (NHEKs) and human skin explants, as well as to evaluate specific markers (G6PDH, loricrin, and γH2AX) of stress-induced skin alterations. A randomized double-blinded, split-face clinical study was performed on a panel of stressed women to measure the benefits of OR agonist treatment for skin. Three new ORs (OR10A6, OR2AG2, and OR11H4) were identified in skin. A specific Rose extract and its major constituent (phenylethyl alcohol) were found to activate these ORs. The extract composition was revealed by both GC/FID and GC/MS analyses simultaneously and showed the presence of 34 volatiles molecules. Moreover, epinephrine induces a skin stress response characterized by increased expression of G6PD, loricrin, and γH2AX biomarkers, and a decrease of OR expression. These effects were prevented in the presence of rose extract and its benefits were confirmed clinically by a decrease in the appearance of under-eye dark circles. Altogether, our findings suggest that ORs may represent a new, promising way to treat stress-associated skin disorders.

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