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Mécano-Stimulation™ of the skin improves sagging score and induces beneficial functional modification of the fibroblasts: clinical, biological, and histological evaluations

Authors Humbert P, Fanian F, Lihoreau T, Jeudy A, ElkhyatA, Robin S, Courderot-Masuyer C, Tauzin H, Lafforgue C, Haftek M

Received 21 June 2014

Accepted for publication 27 September 2014

Published 2 February 2015 Volume 2015:10 Pages 387—403


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Richard Walker

Philippe Humbert,1,2 Ferial Fanian,1,2 Thomas Lihoreau,1,2 Adeline Jeudy,1,2 Ahmed Elkhyat,1,2 Sophie Robin,3 Carol Courderot-Masuyer,3 Hélène Tauzin,3 Christine Lafforgue,1,2,4 Marek Haftek5

1Research and Studies Center on the Integument (CERT), Department of Dermatology, Clinical Investigation Center (CIC 1431), Besançon University Hospital; 2INSERM UMR1098, FED4234 IBCT, University of Franche-Comté, Besançon, France; 3SARL BIOEXIGENCE, Besançon, France; 4Dermopharmacology and Cosmetology Unit, University of Paris Sud, France; 5University of Lyon 1, EA4169, Experimental, clinical and therapeutic aspects of the skin barrier function, INSERM US7 – CNRS UMS3453, Lyon, France

Background: Loss of mechanical tension appears to be the major factor underlying decreased collagen synthesis in aged skin. Numerous in vitro studies have shown the impact of mechanical forces on fibroblasts through mechanotransduction, which consists of the conversion of mechanical signals to biochemical responses. Such responses are characterized by the modulation of gene expression coding not only for extracellular matrix components (collagens, elastin, etc.) but also for degradation enzymes (matrix metalloproteinases [MMPs]) and their inhibitors (tissue inhibitors of metalloproteinases [TIMPs]). A new device providing a mechanical stimulation of the cutaneous and subcutaneous tissue has been used in a simple, blinded, controlled, and randomized study.
Materials and methods: Thirty subjects (aged between 35 years and 50 years), with clinical signs of skin sagging, were randomly assigned to have a treatment on hemiface. After a total of 24 sessions with Mécano-Stimulation™, biopsies were performed on the treated side and control area for in vitro analysis (dosage of hyaluronic acid, elastin, type I collagen, MMP9; equivalent dermis retraction; GlaSbox®; n=10) and electron microscopy (n=10). Furthermore, before and after the treatment, clinical evaluations and self-assessment questionnaire were done.
Results: In vitro analysis showed increases in hyaluronic acid, elastin, type I collagen, and MMP9 content along with an improvement of the migratory capacity of the fibroblasts on the treated side. Electron microscopy evaluations showed a clear dermal remodeling in relation with the activation of fibroblast activity. A significant improvement of different clinical signs associated with skin aging and the satisfaction of the subjects were observed, correlated with an improvement of the sagging cheek.
Conclusion: Mécano-Stimulation is a noninvasive and safe technique delivered by flaps microbeats at various frequencies, which can significantly improve the skin trophicity. Results observed with objective measurements, ie, in vitro assessments and electron microscopy, confirm the firming and restructuring effect clinically observed.

Keywords: skin rejuvenation, skin sagging, mechanical stimulation, fibroblast synthesis

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