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Flament F, Mercurio DG, Catalan E, Bouhadanna E, Delaunay C, Miranda DF, Passeron T. Impact on facial skin aging signs of a 1-year standardized photoprotection over a classical skin care routine in skin phototypes II-VI individuals: A prospective randomized trial. J Eur Acad Dermatol Venereol 2023; 37:2090-2097. [PMID: 37247191 DOI: 10.1111/jdv.19230] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/11/2023] [Indexed: 05/30/2023]
Abstract
BACKGROUND Data reflecting the impact of photoprotection on cutaneous aging are scarce and mostly limited to fair skin. OBJECTIVE To assess the effectiveness of a photoprotective product in counteracting the photoaging process in different skin phototypes over 1 year compared against a classical routine. MATERIALS AND METHODS Two hundred and ninety Brazilian women aged 30-65 years, with skin phototype II-VI were equally randomized in two groups. Group 1 kept on their routine whereas Group 2 applied, twice daily, a photoprotective product (SPF 60, PPD = 24.1) replacing the one they routinely used. Volunteers reported the duration of their daily sun-exposure. Standardized photographs taken at D0 and D365 were analysed by 15 dermatologists to assess eight wrinkles and pigmentation signs. RESULTS A global increase in severity was reported which was significant for Group 1. This increase was lower in Group 2 where only half the signs showed significant worsening. In Group 2 versus Group 1, the increase in forehead wrinkles, marionette lines, wrinkles created by ptosis and size of dark spot was significantly (p < 0.05) decreased by 30%-50%. CONCLUSION Daily application of a high photoprotective product significantly decreases the progression of skin aging signs after 1 year in skin phototypes II-VI.
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Affiliation(s)
- F Flament
- L'Oréal Research and Innovation, Clichy, France
| | - D G Mercurio
- L'Oréal Research and Innovation, Rio de Janeiro, Brazil
| | - E Catalan
- L'Oréal Research and Innovation, Clichy, France
| | | | - C Delaunay
- L'Oréal Research and Innovation, Clichy, France
| | | | - T Passeron
- Department of Dermatology, CHU Nice, Université Côte d'Azur, Nice, France
- INSERM, U1065, C3M, Université Côte d'Azur, Nice, France
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Lambert KA, Clements CM, Mukherjee N, Pacheco TR, Shellman SX, Henen MA, Vögeli B, Goldstein NB, Birlea S, Hintzsche J, Tan AC, Zhao R, Norris DA, Robinson WA, Wang Y, VanTreeck JG, Shellman YG. SASH1 interacts with TNKS2 and promotes human melanocyte stem cell maintenance. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.26.559624. [PMID: 37808724 PMCID: PMC10557680 DOI: 10.1101/2023.09.26.559624] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Both aging spots (hyperpigmentation) and hair graying (lack of pigmentation) are associated with aging, two seemingly opposite pigmentation phenotypes. It is not clear how they are mechanistically connected. This study investigated the underlying mechanism in a family with an inherited pigmentation disorder. Clinical examinations identified accelerated hair graying and skin dyspigmentation (intermixed hyper and hypopigmentation) in the family members carrying the SASH1 S519N variant. Cell assays indicated that SASH1 promoted stem-like characteristics in human melanocytes, and SASH1 S519N was defective in this function. Multiple assays showed that SASH1 binds to tankyrase 2 (TNKS2), which is required for SASH1's promotion of stem-like function. Further, the SASH1 S519N variant is in a bona fide Tankyrase-binding motif, and SASH1 S519N alters the binding kinetics and affinity. Results here indicate SASH1 as a novel protein regulating the appropriate balance between melanocyte stem cells (McSC) and mature melanocytes (MCs), with S519N variant causing defects. We propose that dysfunction of McSC maintenance connects multiple aging-associated pigmentation phenotypes in the general population.
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Wong QYA, Chew FT. Defining skin aging and its risk factors: a systematic review and meta-analysis. Sci Rep 2021; 11:22075. [PMID: 34764376 PMCID: PMC8586245 DOI: 10.1038/s41598-021-01573-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 10/27/2021] [Indexed: 01/01/2023] Open
Abstract
Skin aging has been defined to encompass both intrinsic and extrinsic aging, with extrinsic aging effected by environmental influences and overlaying the effects of chronological aging. The risk factors of skin aging have been studied previously, using methods of quantifying skin aging. However, these studies have yet to be reviewed. To better understand skin aging risk factors and collate the available data, we aimed to conduct a systematic review and meta-analysis. We conducted our systematic review in compliance with Preferred Reporting Item for Systematic Review and Meta-Analyses (PRISMA) guidelines. Embase, PubMed and Web of Science databases were searched in October 2020 using specific search strategies. Where odds ratios were reported, meta-analyses were conducted using the random effects model. Otherwise, significant factors were reported in this review. We identified seven notable risk factors for various skin aging phenotypes: age, gender, ethnicity, air pollution, nutrition, smoking, sun exposure. This review's results will guide future works, such as those aiming to examine the interaction between genetic and environmental influences.
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Affiliation(s)
- Qi Yi Ambrose Wong
- Allergy and Molecular Immunology Laboratory, Lee Hiok Kwee Functional Genomics Laboratories, Department of Biological Sciences, Faculty of Science, National University of Singapore, Block S2, Level 5, 14 Science Drive 4, Lower Kent Ridge Road, Singapore, 117543, Singapore
| | - Fook Tim Chew
- Allergy and Molecular Immunology Laboratory, Lee Hiok Kwee Functional Genomics Laboratories, Department of Biological Sciences, Faculty of Science, National University of Singapore, Block S2, Level 5, 14 Science Drive 4, Lower Kent Ridge Road, Singapore, 117543, Singapore.
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Chng WQ, Samuel M, Naidoo K, Jaffar H, Khor IW, Yiong Huak C, Watson REB, De Mozzi P, Tam WWS, Camargo CP, Leong WMS. Topical treatments and skin-resurfacing techniques for skin ageing. Hippokratia 2021. [DOI: 10.1002/14651858.cd014391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Qiang Chng
- Department of Internal Medicine; National University Health System; Singapore Singapore
| | - Miny Samuel
- Research Support Unit; NUS Yong Loo Lin School of Medicine; Singapore Singapore
| | - Khimara Naidoo
- Department of Dermatology; Royal Victoria Infirmary; Newcastle Upon Tyne UK
| | - Huma Jaffar
- Department of Dermatology; National University Health System; Singapore Singapore
| | - Ing Wei Khor
- Dean's Office; NUS Yong Loo Lin School of Medicine; Singapore Singapore
| | - Chan Yiong Huak
- Biostatistics Unit; Yong Loo Lin School of Medicine; Singapore Singapore
| | - Rachel EB Watson
- Centre for Dermatology Research; The University of Manchester & Salford Royal NHS Foundation Trust; Salford UK
- Manchester Institute for Collaborative Research on Ageing; University of Manchester; Manchester UK
- NIHR Manchester Biomedical Research Centre; Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre; Manchester UK
| | - Paola De Mozzi
- Department of Dermatology; Royal Free London NHS Foundation Trust; London UK
| | - Wilson Wai San Tam
- Alice Lee Center for Nursing Studies; NUS Yong Loo Lin School of Medicine; Singapore Singapore
| | - Cristina Pires Camargo
- Laboratory of Microsurgery and Plastic Surgery (LIM-04), School of Medicine; Universidade de São Paulo; São Paulo Brazil
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Boismal F, Serror K, Dobos G, Zuelgaray E, Bensussan A, Michel L. [Skin aging: Pathophysiology and innovative therapies]. Med Sci (Paris) 2020; 36:1163-1172. [PMID: 33296633 DOI: 10.1051/medsci/2020232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
One of the major challenges of the 21st century is the fight against aging, defined as a set of physiological mechanisms altering the physical and intellectual capacities of human beings. Aging of the skin is only one visible part of this process. It is associated with major healing defects linked in part to the alteration of the biomechanical properties of skin cells, mainly dermal fibroblasts. The immune system, another key component in maintaining skin homeostasis and the efficient healing of wounds, also suffers the effects of time: the consequent skin immunosenescence would limit the anti-infectious and vaccine response, while promoting a pro-tumor environment. The main skin damages due to aging, whether intrinsic or extrinsic, will be detailed before listing the effective anti-aging strategies to combat age-related dermal and epidermal stigmas.
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Affiliation(s)
- Françoise Boismal
- Inserm U976 ; Centre de recherche sur la peau ; hôpital Saint-Louis, Paris, France
| | - Kevin Serror
- Service de chirurgie plastique et reconstructrice, hôpital Saint-Louis, Paris, France
| | - Gabor Dobos
- Inserm U976 ; Centre de recherche sur la peau ; hôpital Saint-Louis, Paris, France - Service de dermatologie, hôpital Saint Louis, Paris, France
| | - Elina Zuelgaray
- Inserm U976 ; Centre de recherche sur la peau ; hôpital Saint-Louis, Paris, France - Service de dermatologie, hôpital Saint Louis, Paris, France
| | - Armand Bensussan
- Inserm U976 ; Centre de recherche sur la peau ; hôpital Saint-Louis, Paris, France
| | - Laurence Michel
- Inserm U976 ; Centre de recherche sur la peau ; hôpital Saint-Louis, Paris, France - Service de dermatologie, hôpital Saint Louis, Paris, France
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Abstract
Ethnic skin is quickly emerging as the norm in the United States, and as the population becomes more diverse, there is also a projected rise in the number of aging adults. Given the paucity of data regarding aging in ethnic skin, the authors have consolidated available information for this population. Literature examining structural and functional variation of aging in ethnic skin types was primarily found through PubMed and supplemental textbook chapters. Aging is comprised of two synergistic processes, intrinsic or chronologic aging, and extrinsic aging. Caucasian, African American, East Asian, and Hispanic skin each have distinguishing features of aging, but all populations share dyspigmentation, rhytides, and skin laxity. Increased melanin content predisposes skin of color to a greater degree of hyperpigmentation, but skin thickness may protect against the formation of rhytides. Tailored prevention and treatment are also paramount in attaining favorable outcomes for this growing cohort.
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Affiliation(s)
- Samantha Venkatesh
- Department of Dermatology, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Mayra B C Maymone
- Department of Dermatology, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Neelam A Vashi
- Department of Dermatology, Boston University School of Medicine, Boston, Massachusetts, USA; US Department of Veteran Affairs, Boston Health Care System, Boston, MA.
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Jiang R, Kezele I, Levinshtein A, Flament F, Zhang J, Elmoznino E, Ma J, Ma H, Coquide J, Arcin V, Omoyuri E, Aarabi P. A new procedure, free from human assessment that automatically grades some facial skin structural signs. Comparison with assessments by experts, using referential atlases of skin ageing. Int J Cosmet Sci 2019; 41:67-78. [DOI: 10.1111/ics.12512] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/11/2019] [Indexed: 01/16/2023]
Affiliation(s)
- Ruowei Jiang
- ModiFace - A L'Oréal Group Company; Toronto Canada
| | - Irina Kezele
- ModiFace - A L'Oréal Group Company; Toronto Canada
| | | | | | - Jingyi Zhang
- ModiFace - A L'Oréal Group Company; Toronto Canada
| | | | - Junwei Ma
- ModiFace - A L'Oréal Group Company; Toronto Canada
| | - He Ma
- ModiFace - A L'Oréal Group Company; Toronto Canada
| | | | - Vincent Arcin
- L'Oréal CDO - Digital Service Factory; Clichy France
| | - Esohe Omoyuri
- L'Oréal CDO - Digital Service Factory; Clichy France
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Flament F, Gautier B, Benize AM, Charbonneau A, Cassier M. Seasonally-induced alterations of some facial signs in Caucasian women and their changes induced by a daily application of a photo-protective product. Int J Cosmet Sci 2017; 39:664-675. [DOI: 10.1111/ics.12427] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 09/01/2017] [Indexed: 01/08/2023]
Affiliation(s)
- F. Flament
- L'Oreal Research and Innovation; 188-200 Rue Paul Hochart 94550; Chevilly-Larue France
| | - B. Gautier
- L'Oreal Research and Innovation; 188-200 Rue Paul Hochart 94550; Chevilly-Larue France
| | - A.-M. Benize
- L'Oreal Research and Innovation; 188-200 Rue Paul Hochart 94550; Chevilly-Larue France
| | - A. Charbonneau
- Eurosyn, 16; Avenue du Québec - Bât. Muscari - ZA Courtaboeuf; 91140 Villebon-sur-Yvette France
| | - M. Cassier
- L'Oreal Research and Innovation; 188-200 Rue Paul Hochart 94550; Chevilly-Larue France
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Cho M, Lee DH, Doh EJ, Kim Y, Chung JH, Kim HC, Kim S. Development and clinical validation of a novel photography-based skin erythema evaluation system: a comparison with the calculated consensus of dermatologists. Int J Cosmet Sci 2017; 39:426-434. [DOI: 10.1111/ics.12393] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 02/04/2017] [Indexed: 12/30/2022]
Affiliation(s)
- M. Cho
- Interdisciplinary Program for Bioengineering; Graduate School; Seoul National University; Seoul 110-744 Korea
| | - D.-H. Lee
- Department of Dermatology; Seoul National University Hospital; Seoul 110-744 Korea
| | - E. J. Doh
- Department of Dermatology; Seoul National University Hospital; Seoul 110-744 Korea
| | - Y. Kim
- Department of Biomedical Engineering; Seoul National University Hospital; Seoul 110-744 Korea
| | - J. H. Chung
- Department of Dermatology; Seoul National University Hospital; Seoul 110-744 Korea
| | - H. C. Kim
- Department of Biomedical Engineering; Seoul National University College of Medicine; Seoul 110-799 Korea
- Institute of Medical and Biological Engineering; Seoul National University; Seoul 151-742 Korea
| | - S. Kim
- Department of Biomedical Engineering; Seoul National University College of Medicine; Seoul 110-799 Korea
- Institute of Medical and Biological Engineering; Seoul National University; Seoul 151-742 Korea
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10
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Pigmentation in African American skin decreases with skin aging. J Am Acad Dermatol 2016; 75:782-787. [DOI: 10.1016/j.jaad.2016.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 04/27/2016] [Accepted: 05/01/2016] [Indexed: 11/19/2022]
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Cho M, Lee DH, Kim Y, Koh W, Chung JH, Kim HC, Kim S. Development and clinical validation of a novel photography-based skin pigmentation evaluation system: a comparison with the calculated consensus of dermatologists. Int J Cosmet Sci 2015; 38:399-408. [PMID: 26705766 DOI: 10.1111/ics.12303] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 12/16/2015] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Various cosmetics, medicines, and light and laser treatments have been increasingly developed to improve pigmentary skin alterations such as melasma, actinic lentigo and dyschromia. To determine the efficacy of these modalities in view of the changes in pigmentation, an objective and reliable device that has a comparable performance to that of physicians is required. We developed a novel photography-based skin pigmentation evaluation system and validated its accuracy and reliability with a newly proposed method. METHODS A novel photography-based system was developed that integrates a consistent photography setting and image processing diagnostic algorithms. To automatically detect areas of pigmentation, the diagnostic algorithms were applied to photographs, which were obtained from 31 female patients. To validate its performance in comparison with the physicians' evaluation, five dermatologists independently evaluated the area of pigmentation. The clinical consensus area of pigmentation (CCAP) was calculated based on the consensus of five dermatologists' to exclude subjectivity or bias, and it was compared with the pigmentation area determined by the system. RESULTS Forty-four photographs with pigmented areas were evaluated by the system and the physicians. In contrast to the individual physician assessments, CCAP reduced the error that occurred due to subjectivity and bias, particularly for areas with indistinct pigmentation, and it was set as the gold standard. The results from the system showed a mean accuracy of 92.1% and a standard deviation of 4.6% in comparison with CCAP. CONCLUSION This pigmentation evaluation system can reproduce the physicians' consensus, suggesting that this system can support the dermatologists' objective evaluation of pigmentation.
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Affiliation(s)
- M Cho
- Interdisciplinary Program for Bioengineering, Graduate School, Seoul National University, Seoul, 110-744, Korea
| | - D-H Lee
- Department of Dermatology, Seoul National University Hospital, Seoul, 110-744, Korea
| | - Y Kim
- Department of Biomedical Engineering, Seoul National University Hospital, Seoul, 110-744, Korea
| | - W Koh
- JMO Dermatology, Seoul, 135-887, Korea
| | - J H Chung
- Department of Dermatology, Seoul National University Hospital, Seoul, 110-744, Korea
| | - H C Kim
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul, 110-799, Korea.,Institute of Medical and Biological Engineering, Seoul National University, Seoul, 151-742, Korea
| | - S Kim
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul, 110-799, Korea.,Institute of Medical and Biological Engineering, Seoul National University, Seoul, 151-742, Korea
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