5-a reductase inhibition by Epilobioum fleischeri extract modulates facial microbiota structure / Riccardo Sfriso in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 44, N° 4 (08/2022)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 44, N° 4 (08/2022) . - p. 440-452 Titre : 5-a reductase inhibition by Epilobioum fleischeri extract modulates facial microbiota structure Type de document : document électronique Auteurs : Riccardo Sfriso, Auteur ; Joshua Claypool, Auteur ; Magalie Roche, Auteur ; Dominik Imfeld, Auteur Année de publication : 2022 Article en page(s) : p. 440-452 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antienzymes Extraits de plantes:Extraits (pharmacie) Formulation (Génie chimique) Justification de l'allégation Microbiome cutané Microbiote cutané Peau -- Soins et hygiène Réductase Une réductase est une enzyme qui diminue l'énergie d'activation d'une réaction d'oxydo-réduction. (Wikipedia) Visage -- Soins et hygiène Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Background : Facial skin is a particularly complex environment made of different skin types such as sebaceous (forehead) and dry (cheeks). The skin microbiota composition on different facial sites has not yet been addressed. - Methods : We conducted a 4-week-long, single-centre, randomized and placebo-controlled clinical study involving 23 Caucasian females. We assessed both bacterial composition on five different facial areas and the microbiome modulatory effects resulting from the topical application of a plant extract (Epilobium fleischeri). Skin microbiome samples were collected before and after 4 weeks of product application. Microbiota profiling was performed via 16S rRNA gene sequencing, and relative abundance data were used to calculate differentials via a multinomial regression model. - Results : Via ‘reference frames’, we observed shifts in microbial composition after 4 weeks of twice-daily product application and identify certain microbiota species, which were positively associated with the application of the product containing the Epilobium fleischeri extract. Staphylococcus hominis, Staphylococcus epidermidis, and Micrococcus yunnanensis appeared to be significantly enriched in the final microbiota composition of the active treatment group. - Conclusion : Facial skin was found to be colonized by an heterogenous microbiota, and the Epilobium fleischeri extract had a modulatory effect on commensal bacteria on the different facial sites. Note de contenu : - INTRODUCTION : Objectives - MATERIALS AND METHODS : Test formulations - Clinical study design - Porphyrins Non-inflammatory lesions Skin microbiome sampling 16S rRNA gene sequencing and predicted metagenomics Data filtering and analysis Facial colour mapping RESULTS Relative abundance and diversity Reference frames and differential ranking Porphyrins and non-inflammatory lesions assessment - Table 1 : Formulations used in the clinical study - Table 2 : Songbird output values for pathways related to N-acetylneuraminate degradation, mandelate degradation, hexitol degradation and tryptophan degradation DOI : https://doi.org/10.1111/ics.12777 En ligne : https://drive.google.com/file/d/1O4avryVbmE2KCmKDwKdGIKdskdHRNMHU/view?usp=shari [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38144 [article]

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Transferring pigmentation from forearm to face / Remo Campiche in GLOBAL PERSONAL CARE, Vol. 23, N° 3 (03/2022)  

[article]  inGLOBAL PERSONAL CARE > Vol. 23, N° 3 (03/2022) . - p. 60-64 Titre : Transferring pigmentation from forearm to face Type de document : texte imprimé Auteurs : Remo Campiche, Auteur ; Mathias Gempeler, Auteur ; Dominik Imfeld, Auteur ; Sarah Gougeon, Auteur ; Marie Cherel, Auteur ; Magalie Roche, Auteur Année de publication : 2022 Article en page(s) : p. 60-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dermo-cosmétologie Formulation (Génie chimique) Mesure Peau -- Soins et hygiène Pigmentation de la peau Simulation par ordinateur Visage -- Soins et hygiène Index. décimale : 668.5 Parfums et cosmétiques Résumé : There is interest, particularly within the cosmetics industry, in understanding what pigmentation reactions and their modulation look like on the face. We have therefore developed methods that enable us to transfer pigmentation digitally from volunteers’ inner forearms to their faces. Using these methods, we can predict facial pigmentation reactions, based on the reaction on surrogate body sites such as the forearm, without irradiating the face. En ligne : https://drive.google.com/file/d/16QUVBc4FHQ4XhXI_5UyzDQgvWkXvZTSv/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37253 [article]

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