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Randomized comparative double-blind study assessing the difference between topically applied microbiome supporting skincare versus conventional skincare on the facial microbiome in correlation to biophysical skin parameters / Emilia Santamaria in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 1 (02/2023)
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Titre : Randomized comparative double-blind study assessing the difference between topically applied microbiome supporting skincare versus conventional skincare on the facial microbiome in correlation to biophysical skin parameters Type de document : document électronique Auteurs : Emilia Santamaria, Auteur ; Ulf Akerström, Auteur ; Nicolas Berger-Picard, Auteur ; Sylvain Lataste, Auteur ; Johanna M. Gillbro, Auteur Année de publication : 2023 Article en page(s) : p. 83-94 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conservateurs (chimie)
Dermo-cosmétologie
Diversité bactérienne
Étude randomisée
Etudes comparatives
Evaluation
Microbiome -- Analyse
Microbiome cutané
Peau -- Soins et hygiène
Séquençage des acides nucléiquesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Background : There are trillions of live bacteria, of around 1000 different species, living in human skin which are considered essential for the balance and barrier function of the skin. The gut microbiome has been a subject of extensive research and evidence shows that the gut flora is affected by preservatives and processed foods. In conventional skincare, preservatives are used, and this raises the question of how it affects the skin flora and its balance.
- Methods : A randomized double-blind study on 14 healthy volunteers ages 23–45 years old were advised to use microbiome-supporting (MS) products on one cheek and benchmark (BM) products on the other cheek daily for 3 weeks. To investigate how the skin was affected, the skin microbiome was analysed using 16 S rRNA sequencing and biophysical parameters were assessed using an Antera 3D camera. Measurements were performed before and after the 3 weeks of using the products.
- Results : The use of MS products for 3 weeks significantly increased the total number of reads mapped to unique bacterial species (p < 0.05) and the number of different unique species (p < 0.05). In addition, the use of MS products significantly reduced redness (p < 0.05) and improved skin texture (p < 0.01). The use of BM products showed no significant difference in any of the parameters except improved skin texture (p < 0.05). Additionally, the MS side showed a significantly improved diversity (p < 0.05) compared with the BM side. The four major phyla found were, similarly to previous findings by others, Actinobacteria, Firmicutes, Proteobacteria and Bacteroidetes. Some of the most prevalent species were Cutibacterium acnes, Staphylococcus epidermidis and Pseudonomas aeruginosa.
- Conclusion : The findings of this study showed significant improvements in the microbiome and biophysical parameters within 3 weeks of using MS skincare alone, while BM skincare only gave significantly improved skin roughness. Importantly, the MS side gave a significantly improved bacterial Shannon diversity (p < 0.05) compared with the BM side. Regarding the biophysical parameters, the MS skincare gave significant improvements in several parameters compared with baseline. However, they were not yet significant when compared to using BM skincare and therefore a larger study population will be needed. Importantly, this is the first study to investigate how preservatives affect the facial microbiome in vivo and has raised a need for further investigation. These results together with further studies can lead to innovations within the cosmetic industry that promote healthier skin.Note de contenu : - MATERIALS AND METHODS : Subject population - Study design - Test products - Evaluation of the skin microbiome - Evaluation of skin biophysical parameters by image analysis - Statistical analysis
- RESULTS : Microbiome sequencing - Biophysical parameters (Antera 3D)
- Table 1 : Benchmark cleanser ingredients (according to INCI)
- Table 2 : Microbiome-supporting cleanser ingredients (according to INCI)
- Table 3 : Benchmark cream ingredients (according to INCI)
- Table 4 : Microbiome-supporting cream ingredients (according to INCI)DOI : https://doi.org/10.1111/ics.12826 En ligne : https://drive.google.com/file/d/1HoA0q4V_OEyScOL-9dN7d7JkwmemTgcz/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38822
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 1 (02/2023) . - p. 83-94[article]Relationship between skin fungal and bacterial microbiomes and skin pH / Narifumi Akaza in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 45, N° 3 (06/2023)
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Titre : Relationship between skin fungal and bacterial microbiomes and skin pH Type de document : document électronique Auteurs : Narifumi Akaza, Auteur ; Kazuto Takasaki, Auteur ; Takahiro Matsudaira, Auteur ; Atsuko Usui, Auteur ; Anna Iijima, Auteur ; Shiori Miura, Auteur ; Youichi Yashiro, Auteur Année de publication : 2023 Article en page(s) : p. 362-372 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cutibactéries
Dermatologie
Japonais
Malassezia
Microbiome cutané
Perte insensible en eau
pH
StaphylocoquesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective :The present study investigated the relationship between the skin bacterial and fungal microbiomes and skin pH at sebaceous sites, namely, the forehead, cheek and upper chest. We also examined the relationship between the skin microbiome and transepidermal water loss (TEWL), which is an indicator of rough skin.
- Methods : Thirty healthy Japanese subjects (15 females and 15 males) were enrolled as subjects. The forehead, cheek and upper chest were examined in August (summer) and February (winter). Skin surface samples were collected using the swab method, and the 16s rRNA and ITS regions were analysed using next-generation sequencing. Skin pH and TEWL were also assessed.
- Results : The changes observed in the skin microbiome were associated with season-dependent changes in skin pH. An increase in skin pH at the forehead and cheek was associated with a higher relative abundance of Cutibacterium spp., a reduction in bacterial diversity, and a lower relative abundance of Staphylococcus spp. A decrease in skin pH at the upper chest was associated with a higher relative abundance of Malassezia restricta, a lower relative abundance of M. sympodialis and decrease in fungal diversity. Moreover, these changes were also associated with an increase in TEWL.
- Conclusion : The present results indicate that changes in skin pH are associated with changes in the skin bacterial and fungal microbiomes at sebaceous sites. The changes observed in the skin microbiome were also associated with rough skin.Note de contenu : - METHODS : Subjects - Skin measurements - Sample collection of cutaneous microorganisms - DNA extraction - Next-generation sequencing - Data analysis - Statistical analysis
- RESULTS : Skin condition - Seasonal changes in the skin microbiome - Correlations between skin condition and cutaneous microorganismsDOI : https://doi.org/10.1111/ics.12842 En ligne : https://drive.google.com/file/d/11QTqxob_qrXoxvujR4BpLJWXi2hjYjJL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39567
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 45, N° 3 (06/2023) . - p. 362-372[article]Reproducing the scalp microbiota community : co-colonization of a 3D reconstructed human epidermis with C. acnes and M. restricta / Marisa Meloni in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 43, N° 2 (04/2021)
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Titre : Reproducing the scalp microbiota community : co-colonization of a 3D reconstructed human epidermis with C. acnes and M. restricta Type de document : document électronique Auteurs : Marisa Meloni, Auteur ; Silvia Balzaretti, Auteur ; Nathalie Collard, Auteur ; Stéphane Desaint, Auteur ; Céline Laperdrix, Auteur Année de publication : 2021 Article en page(s) : p. 235-245 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir chevelu
Dermatologie
Justification de l'allégation
Microbiologie
Microbiome cutané
Pellicules (dermatologie)Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : A 3D reconstructed human epidermis (RHE) model colonized with specific microbial strains was developed to model the complex interactions between strains of the human scalp hair.
- Methods : Reconstructed human epidermis was colonized with Cutibacterium acnes and Malassezia restricta for 72 h. The epidermal model was characterized in terms of morphology, using immune-labelling targeting biomarkers for barrier structure, proliferation, differentiation and anti-microbial defence. The barrier function was assessed by transepithelial electrical eesistance (TEER) measurements. In order to study the microorganisms on the epidermal model, viable counts and phenotype ultrastructure analysis were performed by scanning electron microscopy (SEM).
- Results : The RHE colonized with C. acnes did not lead to severe modifications of the physiological barrier integrity and viability, though it shows aggregates. M. restricta formed large aggregates by a close interaction with the RHE, thus causing both a strong decrease in barrier function and structure degradation and an increased human beta defensin 2 (HBD2) expression. The co-colonized model resulted in barrier depletion, but the overall damage was less severe, respecting the single colonization with M. restricta. The developed ‘scalp model’ allowed to identify morphological modifications leading to uncontrolled epidermal renewal.
- Conclusion : This study shows a pre-clinical model that recapitulates the interactions that can occur between site-specific microbial strains and keratinocytes in dandruff condition. The model can be applied to assess ingredients and products’ mechanism of action.
Note de contenu : - MATERIALS AND METHODS : Test system - C. acnes and M. restricta inoculum - RHE colonization - Bacteria and yeast viable counting - Transepithelial electrical resistance (TEER) measurements - Histo-morphological analysis: haematoxylin and eosin (H&E) staining - Immunofluorescence staining - Scanning electron microscopy (SEM)
- RESULTS : Skin integrity : TEER measurements - Barrier structure and function: morphology by H&E staining - Epidermal differentiation : KRT 10 and KRT 14 immunofluorescence - Epidermal barrier and Stratum Corneum proteins expression : involucrin and loricrin immunofluorescence - Innate and anti-microbial response : beta defensin and elafin immunofluorescence - RHE colonization
- Table 1 : Transepithelial electrical resistance (TEER) measurements expressed in Ohm*cm2 at basal time (t = 0 h) and after 72 h incubation. Duplicate biological samples
- Table 2 : Viable count on the apical compartment after 72 h colonization with C. acnes, M. restricta and co-colonizationDOI : https://doi.org/10.1111/ics.12688 En ligne : https://drive.google.com/file/d/1rtvUS5BBX75BnZj43mJbvG0fpW3eusVP/view?usp=shari [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35875
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 43, N° 2 (04/2021) . - p. 235-245[article]Returning to our origins through skin rewilding / Julia Comas in PERSONAL CARE EUROPE, Vol. 12, N° 2 (04/2018)
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Titre : Returning to our origins through skin rewilding Type de document : texte imprimé Auteurs : Julia Comas, Auteur ; Olga Laporta, Auteur ; Marie Ollagnier, Auteur ; Nùria Almiñana, Auteur ; Raquel Delgado, Auteur Année de publication : 2018 Article en page(s) : p. 127-129 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cosmétiques
Microbiome cutané
Peau -- Soins et hygiène
Peptides
Protection cutanéeIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Discomfort, fragility, dehydration, scaliness and redness are all characteristics of sensitive skin that is lacking an effective defense system. Individuals living in urban environments are more prone to suffer from skin sensitivity, suggesting a relationship between low exposure to nature and inflammatory disorders. The link between nature and skin health involves the skin microbiota, which has been found to be different in uncontacted populations with healthier and more protected skin. FensebiomeTM peptide helped promote a healthy microbiome similar to that of our ancestors in doser contact with nature and to reinforce the physical barrier function by improving the cell cohesion and the skin barrier protective effect on urban subjects, helping restore sensitive skin. Note de contenu : - Favourable skin microbiome : Diversity - Composition - Microbiome functional profile
- Enhanced skin cell cohesion
- Barrier protection effect
- Promoting the adhesion of beneficial skin microbiota
- Modulation of the immune response
- Reinforcing the key epidermal barrier compartments
- Improved epidermal barrier functionality : Stratum granulosum integrity
- FIGURES : 1. Fluorescence microscopy, images obtained from different strips before and after each treatment - 2. TEWL decrease vs. damage after different treatments (vs initial time : ****p<0.0001) - 3. Keratinocytes nuclei (lue) pre-incubated with only the medium or with the active treatment, showing adhesion of S. epidermidis (green) and of S. aureus (red) - 4. Inside-out diffusionthrough reconstructed human epidermis models. Presence of tracer is observed in green (cell nuceli are stained in blue) - 5. Outside-in diffusion of the toluiding blue dye into the stratum corneum under different conditionsEn ligne : https://drive.google.com/file/d/1s_WHH8PY-hpRtH1wzUYmo8uoXUiDdV1c/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30462
in PERSONAL CARE EUROPE > Vol. 12, N° 2 (04/2018) . - p. 127-129[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19931 - Périodique Bibliothèque principale Documentaires Disponible Revealing the secret life of skin - with the microbiome you never walk alone / Riccardo Sfriso in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 2 (04/2020)
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Titre : Revealing the secret life of skin - with the microbiome you never walk alone Type de document : texte imprimé Auteurs : Riccardo Sfriso, Auteur ; Markus Egert, Auteur ; Mathias Gempeler, Auteur ; Rainer Voegeli, Auteur ; Remo Campiche, Auteur Année de publication : 2020 Article en page(s) : p. 116-126 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cosmétiques
Microbiome cutané
Microorganismes
Peau -- Soins et hygièneIndex. décimale : 668.5 Parfums et cosmétiques Résumé : The human skin microbiome has recently become a focus for both the dermatological and cosmetic fields. Understanding the skin microbiota, that is the collection of vital microorganisms living on our skin, and how to maintain its delicate balance is an essential step to gain insight into the mechanisms responsible for healthy skin and its appearance. Imbalances in the skin microbiota composition (dysbiosis) are associated with several skin conditions, either pathological such as eczema, acne, allergies or dandruff or non-pathological such as sensitive skin, irritated skin or dry skin. Therefore, the development of approaches which preserve or restore the natural, individual balance of the microbiota represents a novel target not only for dermatologists but also for skincare applications. This review gives an overview on the current knowledge on the skin microbiome, the currently available sampling and analysis techniques as well as a description of current approaches undertaken in the skincare segment to help restoring and balancing the structure and functionality of the skin microbiota. Note de contenu : - The human cutaneous microbiome
- Microorganisms have topographical and environmental preferences
- Bacterial strategies for skin colonization in health and disease
- Currently available sampling methods to analyse the skin microbiota
- Planning a human skin microbiome study
- Approaches to characterize and study the skin microbiome
- How should a healthy microbiota look like ?
- Present and future perspectives in the skincare industryDOI : https://doi.org/10.1111/ics.12594 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34502
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Code-barres Cote Support Localisation Section Disponibilité 21862 - Périodique Bibliothèque principale Documentaires Disponible Skin microbiome claims - sience versus marketing / Kristin Neumann in GLOBAL PERSONAL CARE, Vol. 23, N° 8 (09/2022)
PermalinkPermalinkPermalinkSynbiotic skin care with bacillus spores / Robin Temmerman in GLOBAL PERSONAL CARE, Vol. 23, N° 4 (04/2022)
PermalinkThe BE microbiome - Communities with relevance for laundry and home care / Markus Egert in SOFW JOURNAL, Vol. 143, N° 4 (04/2017)
PermalinkThe influence of age, gender and race/ethnicity of the composition of the human axillary microbiome / M. Li in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 41, N° 4 (08/2019)
PermalinkThe influence of cosmetic products on the multicultural skin microbiota / Patrick Gonry in SOFW JOURNAL, Vol. 144, N° 4 (04/2018)
PermalinkThe rise of multifunctional cosmetic ingredients / Balint Koroskenyi in GLOBAL PERSONAL CARE, Vol. 23, N° 7 (07/2022)
PermalinkThe skin microbiome analysed / Ghita Lanzendörfer-Yu in PERSONAL CARE EUROPE, Vol. 14, N° 2 (04/2020)
PermalinkThe skin microbiome : Getting the balance right / Riccardo Sfriso in GLOBAL PERSONAL CARE, Vol. 22, N° 10 (11/2021)
PermalinkThe skin microbiome, probiotics and skin care / Harald van der Hoeven in PERSONAL CARE EUROPE, Vol. 11, N° 4 (09/2017)
PermalinkThe skin's microbiome : Establishing a quality seal for cosmetics & consumer expectations / M. Brandt in SOFW JOURNAL, Vol. 149, N° 6 (06/2023)
PermalinkLes trois composantes d'un cuir chevelu sain / Miriam Dormeyer in EXPRESSION COSMETIQUE, N° Hors-série (12/2021)
PermalinkUnique active ingredients balancing the skin microbiome to solve the fourth most common skin issue / Catherine Zanchetta in SOFW JOURNAL, Vol. 149, N° 4 (04/2023)
PermalinkUnlocking the power of serene sage / Anne-Laure Larrivière in GLOBAL PERSONAL CARE, Vol. 24, N° 9 (10/2023)
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