1
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Amin R, Rancan F, Hillmann K, Blume‐Peytavi U, Vogt A, Kottner J. Effects of a leave-on product on the strength of the dermoepidermal junction: An exploratory, intraindividual, randomized controlled trial in older adults with dry skin. Health Sci Rep 2024; 7:e1985. [PMID: 38505682 PMCID: PMC10949320 DOI: 10.1002/hsr2.1985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/08/2024] [Accepted: 03/03/2024] [Indexed: 03/21/2024] Open
Abstract
Background and Aims Skin aging is associated with dry skin and a decrease of the strength of the dermoepidermal adhesion, which increases the risk for lacerations (skin tears). Application of leave-on products improves dry skin and seems to reduce skin tear incidence. The aim of this study was to measure the effects of a humectant containing leave-on product on the strength of the dermoepidermal junction in older adult participants with dry skin. Methods A randomized controlled trial using a split body design was conducted. One forearm was randomly selected and treated with a lipophilic leave-on product containing 5% urea for 8 weeks. The other forearm was the control. The parameters stratum corneum hydration (SCH), transepidermal water loss, pH, roughness, epidermal thickness and skin stiffness were measured at the baseline, Weeks 4 and 8. At Week 8, suction blisters were created and time to blistering was measured. Blister roofs and interstitial fluid were analyzed for Interleukin-1α, 6 and 8. Results Twelve participants were included. After 8 weeks treatment, SCH was higher (median difference 11.6 AU), and the overall dry skin score (median difference -1) and median roughness (Rz difference -12.2 µm) were lower compared to the control arms. The median group difference for Interleukin-1α was -452 fg/µg total protein (TP) in the blister roofs and -2.2 fg/µg TP in the blister fluids. The median time to blister formation was 7.7 min higher compared to the control arms. Conclusion The regular application of humectant containing leave-on products improves dry skin and seems to lower inflammation and contribute to the strengthening of the dermoepidermal adhesion. This partly explains how the use of topical leave-on products helps to prevent skin tears.
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Affiliation(s)
- Ruhul Amin
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
- BCSIR Laboratories DhakaBangladesh Council of Scientific and Industrial ResearchDhakaBangladesh
| | - Fiorenza Rancan
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Kathrin Hillmann
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Ulrike Blume‐Peytavi
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Annika Vogt
- Department of Dermatology, Venereology and Allergology, Clinical Research Center for Hair and Skin Science, Charitéplatz 1, Charité—Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt‐Universität zu BerlinBerlinGermany
| | - Jan Kottner
- Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt‐Universität zu Berlin, Institute of Clinical Nursing Science, Charitéplatz 1BerlinGermany
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2
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van Lessen M, Mardaryev A, Broadley D, Bertolini M, Edelkamp J, Kückelhaus M, Funk W, Bíró T, Paus R. 'Speed-ageing' of human skin in serum-free organ culture ex vivo: An instructive novel assay for preclinical human skin ageing research demonstrates senolytic effects of caffeine and 2,5-dimethylpyrazine. Exp Dermatol 2024; 33:e14955. [PMID: 37897068 DOI: 10.1111/exd.14955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/28/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023]
Abstract
Preclinical human skin ageing research has been limited by the paucity of instructive and clinically relevant models. In this pilot study, we report that healthy human skin of different age groups undergoes extremely accelerated ageing within only 3 days, if organ-cultured in a defined serum-free medium. Quantitative (immuno-)histomorphometry documented this unexpected ex vivo phenotype on the basis of ageing-associated biomarkers: the epidermis showed significantly reduced rete ridges and keratinocyte proliferation, sirtuin-1, MTCO1 and collagen 17a1 protein levels; this contrasted with significantly increased expression of the DNA-damage marker, γH2A.X. In the dermis, collagen 1 and 3 and hyaluronic acid content were significantly reduced compared to Day 0 skin. qRT-PCR of whole skin RNA extracts also showed up-regulated mRNA levels of several (inflamm-) ageing biomarkers (MMP-1, -2, -3, -9; IL6, IL8, CXCL10 and CDKN1). Caffeine, a methylxanthine with recognized anti-ageing properties, counteracted the dermal collagen 1 and 3 reduction, the epidermal accumulation of γH2A.X, and the up-regulation of CXCL10, IL6, IL8, MMP2 and CDKN1. Finally, we present novel anti-ageing effects of topical 2,5-dimethylpyrazine, a natural pheromone TRPM5 ion channel activator. Thus, this instructive, clinically relevant "speed-ageing" assay provides a simple, but powerful new research tool for dissecting skin ageing and rejuvenation, and is well-suited to identify novel anti-ageing actives directly in the human target organ.
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Affiliation(s)
| | - Andrei Mardaryev
- Monasterium Laboratory, Münster, Germany
- Centre for Skin Sciences, School of Chemistry and Bioscience, University of Bradford, Bradford, United Kingdom
| | | | | | | | | | | | - Tamás Bíró
- Monasterium Laboratory, Münster, Germany
- Cutaneon, Hamburg, Germany
| | - Ralf Paus
- Monasterium Laboratory, Münster, Germany
- Cutaneon, Hamburg, Germany
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
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3
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Chen F, Guo X, Wu Y. Skin antiaging effects of a multiple mechanisms hyaluronan complex. Skin Res Technol 2023; 29:e13350. [PMID: 37357659 PMCID: PMC10225814 DOI: 10.1111/srt.13350] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/04/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVE Intrinsic skin aging is an inevitable process with reduced extracellular matrix deposition and impaired mechanical integrity in the dermal-epidermal junction (DEJ). Hyaluronan is one of the most promising natural ingredients. In this research, multiple mechanisms of a novel hyaluronan complex against intrinsic skin aging were revealed. METHOD Immunohistochemical analysis and enzyme-linked immunosorbent assay were employed to evaluate the effect of low-molecular weight sodium hyaluronan, its acetylated derivative and HA complex on expression of matrix metalloproteinase-1 (MMP-1) and type I collagen in normal human fibroblasts. Then, immunohistochemical analysis and hematoxylin and eosin staining was carried out to evaluate identical effects of HA complex in reconstructed skin equivalents, as well as its benefits on histological structure and DEJ. RESULT In normal human dermal fibroblasts, the hyaluronan complex, which contains low-molecular weight sodium hyaluronate and its acetylated derivative, has synergistic effects by increasing type I collagen expression. At the same time, MMP-1 production was inhibited. This was confirmed in subsequent experiments with skin equivalent, and intriguingly, the hyaluronan complex was also found to increase the expression of two DEJ proteins. CONCLUSION The multimechanism hyaluronan complex in this proof-of-concept study exhibited skin antiaging effects in vitro through inhibiting the expression of MMP-1 and enhancing type I collagen accumulation and the expression of DEJ proteins, which reveals new avenues for investigating more biological activities of various types of hyaluronan.
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Affiliation(s)
- Fan Chen
- Department of Research and DevelopmentBloomage Biotechnology Co., Ltd.ShanghaiChina
| | - Xueping Guo
- Department of Research and DevelopmentBloomage Biotechnology Co., Ltd.JinanChina
| | - Yue Wu
- Department of Research and DevelopmentBloomage Biotechnology Co., Ltd.ShanghaiChina
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4
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Costello L, Goncalves K, De Los Santos Gomez P, Simpson A, Maltman V, Ritchie P, Tasseff R, Isfort R, Dicolandrea T, Wei X, Määttä A, Karakesisoglou I, Markiewicz E, Bascom CC, Przyborski S. Quantitative morphometric analysis of intrinsic and extrinsic skin ageing in individuals with Fitzpatrick skin types II-III. Exp Dermatol 2023; 32:620-631. [PMID: 36695185 PMCID: PMC10947487 DOI: 10.1111/exd.14754] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 01/11/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023]
Abstract
Skin ageing is an intricate physiological process affected by intrinsic and extrinsic factors. There is a demand to understand how the skin changes with age and photoexposure in individuals with Fitzpatrick skin types I-III due to accelerated photoageing and the risk of cutaneous malignancies. To assess the structural impact of intrinsic and extrinsic ageing, we analysed 14 skin parameters from the photoprotected buttock and photoexposed dorsal forearm of young and ageing females with Fitzpatrick skin types II-III (n = 20) using histomorphic techniques. Whilst the minimum viable epidermis (Emin ) remained constant (Q > 0.05), the maximum viable epidermis (Emax ) was decreased by both age and photoexposure (Q ≤ 0.05), which suggests that differences in epidermal thickness are attributed to changes in the dermal-epidermal junction (DEJ). Changes in Emax were not affected by epidermal cell proliferation. For the first time, we investigated the basal keratinocyte morphology with age and photoexposure. Basal keratinocytes had an increased cell size, cellular height and a more columnar phenotype in photoexposed sites of young and ageing individuals (Q ≤ 0.05), however no significant differences were observed with age. Some of the most striking changes were observed in the DEJ, and a decrease in the interdigitation index was observed with both age and photoexposure (Q ≤ 0.001), accompanied by a decreased height of rête ridges and dermal papilla. Interestingly, young photoexposed skin was comparable to ageing skin across many parameters, and we hypothesise that this is due to accelerated photoageing. This study highlights the importance of skin care education and photoprotection from an early age.
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Affiliation(s)
| | | | | | - Amy Simpson
- Department of BiosciencesDurham UniversityDurhamUK
| | | | | | - Ryan Tasseff
- Mason Business Centre, Procter and GambleOhioUSA
| | | | | | - Xingtao Wei
- Mason Business Centre, Procter and GambleOhioUSA
| | - Arto Määttä
- Department of BiosciencesDurham UniversityDurhamUK
| | | | - Ewa Markiewicz
- Department of BiosciencesDurham UniversityDurhamUK
- Hexis Lab LimitedNewcastle upon TyneUK
| | | | - Stefan Przyborski
- Department of BiosciencesDurham UniversityDurhamUK
- Reprocell EuropeGlasgowUK
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5
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Shen Z, Sun L, Liu Z, Li M, Cao Y, Han L, Wang J, Wu X, Sang S. Rete ridges: Morphogenesis, function, regulation, and reconstruction. Acta Biomater 2023; 155:19-34. [PMID: 36427683 DOI: 10.1016/j.actbio.2022.11.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/29/2022] [Accepted: 11/16/2022] [Indexed: 11/25/2022]
Abstract
Rete ridges (RRs) are distinct undulating microstructures at the junction of the dermis and epidermis in the skin of humans and certain animals. This structure is essential for enhancing the mechanical characteristics of skin and preserving homeostasis. With the development of tissue engineering and regenerative medicine, artificial skin grafts have made great progress in the field of skin healing. However, the restoration of RRs has been often disregarded or absent in artificial skin grafts, which potentially compromise the efficacy of tissue repair and regeneration. Therefore, this review collates recent research advances in understanding the structural features, function, morphogenesis, influencing factors, and reconstruction strategies pertaining to RRs. In addition, the preparation methods and limitations of tissue-engineered skin with RRs are discussed. STATEMENT OF SIGNIFICANCE: The technology for the development of tissue-engineered skin (TES) is widely studied and reported; however, the preparation of TES containing rete ridges (RRs) is often ignored, with no literature reviews on the structural reconstruction of RRs. This review focuses on the progress pertaining to RRs and focuses on the reconstruction methods for RRs. In addition, it discusses the limitations of existing reconstruction methods. Therefore, this review could be a valuable reference for transferring TES with RR structure from the laboratory to clinical applications in skin repair.
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Affiliation(s)
- Zhizhong Shen
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
| | - Lei Sun
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Zixian Liu
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Meng Li
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science, Taiyuan 030031, China
| | - Yanyan Cao
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science, Taiyuan 030031, China
| | - Lu Han
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Research Institute of 6D Artificial Intelligence Biomedical Science, Taiyuan 030031, China
| | - Jianming Wang
- General Hospital of TISCO, North Street, Xinghualing District, Taiyuan 030809, China
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China; Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo, China.
| | - Shengbo Sang
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.
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6
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Mellody KT, Bradley EJ, Mambwe B, Cotterell L, Kiss O, Halai P, Loftus Z, Bell M, Griffiths TW, Griffiths CEM, Watson REB. Multifaceted amelioration of cutaneous photoageing by (0.3%) retinol. Int J Cosmet Sci 2022; 44:625-635. [PMID: 35778881 PMCID: PMC9826105 DOI: 10.1111/ics.12799] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/21/2022] [Accepted: 06/28/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Although retinol skin care products improve the appearance of photoaged skin, there is a need for an effective retinol concentration that provides skin benefits without irritation. OBJECTIVE To compare the efficacy of topical 0.1%, 0.3% and 1% retinol in remodelling the cutaneous architecture in an in vivo experimental patch test study, and to determine tolerance of the most effective formulations when used in a daily in-use escalation study. METHODS For the patch test study, retinol products were applied under occlusion, to the extensor forearm of photoaged volunteers (n = 5; age range 66-84 years), and 3 mm skin biopsies obtained after 12 days. Effects of different retinol concentrations, and a vehicle control, on key epidermal and dermal biomarkers of cellular proliferation and dermal remodelling were compared to untreated baseline. Separately, participants (n = 218) recorded their tolerance to 0.3% or 1% retinol over a six-week, approved regimen, which gradually increased the facial applications to once nightly. RESULTS Retinol treatment induced a stepwise increase in epidermal thickness and induced the expression of stratum corneum proteins, filaggrin and KPRP. 0.3% retinol and 1% retinol were comparably effective at inducing keratinocyte proliferation in the epidermis, whilst reducing e-cadherin expression. Fibrillin-rich microfibril deposition was increased following treatment with 0.3% and 1% retinol (p < 0.01); other dermal components remained unaltered (e.g., fibronectin, collagen fibrils, elastin), and no evidence of local inflammation was detected. The in-use study found that 0.3% retinol was better tolerated than 1% retinol, with fewer and milder adverse events reported (χ2 (1) = 23.97; p < 0.001). CONCLUSIONS This study suggests that 1% and 0.3% retinol concentrations were similarly effective at remodelling photodamaged skin in an in vivo model of long-term use. Use of 0.3% retinol in the escalation study was associated with fewer adverse reactions when applied daily. Hence, 0.3% retinol may be better tolerated than 1% retinol, thereby allowing longer-term topical application.
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Affiliation(s)
- Kieran T. Mellody
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK,Manchester Institute for Collaborative Research on AgeingUniversity of ManchesterManchesterUK
| | | | - Bezaleel Mambwe
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK
| | - Lindsay F. Cotterell
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK,Manchester Institute for Collaborative Research on AgeingUniversity of ManchesterManchesterUK
| | - Orsolya Kiss
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK,Manchester Institute for Collaborative Research on AgeingUniversity of ManchesterManchesterUK
| | - Poonam Halai
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK,Manchester Institute for Collaborative Research on AgeingUniversity of ManchesterManchesterUK
| | - Zeena Loftus
- No7 Beauty CompanyWalgreens Boots AllianceNottinghamUK
| | - Mike Bell
- No7 Beauty CompanyWalgreens Boots AllianceNottinghamUK
| | - Tamara W. Griffiths
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK,Manchester Institute for Collaborative Research on AgeingUniversity of ManchesterManchesterUK
| | - Christopher E. M. Griffiths
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK,Manchester Institute for Collaborative Research on AgeingUniversity of ManchesterManchesterUK,NIHR Manchester Biomedical Research CentreManchester University NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK
| | - Rachel E. B. Watson
- Centre for Dermatology ResearchThe University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK,Manchester Institute for Collaborative Research on AgeingUniversity of ManchesterManchesterUK,NIHR Manchester Biomedical Research CentreManchester University NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK
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7
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Infante VH, Maia Campos P. Application of a Reflectance Confocal Microscopy Imaging Analysis Score for the Evaluation of Non-Melanogenic Changes in Male Photoaged Skin. Photochem Photobiol 2022; 99:993-1002. [PMID: 36098679 DOI: 10.1111/php.13713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 08/31/2022] [Indexed: 11/29/2022]
Abstract
The photoaging process is characterized by skin changes due to ultraviolet radiation exposure and is the principal environmental factor affecting skin aging. Reflectance confocal microscopy permits noninvasive skin imaging to understand how the photoaging process may change skin. Since men do not habitually use a sunscreen, the application of skin imaging techniques is important to understand the influence of sunlight on their skin health. The aim of this study was to develop a score based on RCM imaging analyses to evaluate the morphological and structural changes of the photoaged skin according to literature data. The score was applied in order to determine possible correlations between chronological aging and sunscreen use behavior among men. Thus, 40 men aged 18 to 50 years were recruited, images from the frontal region of their skin were obtained and the score was applied. It was observed that habits are more important than age for the skin photoaging process. Men with photoprotection habits showed overall better skin morphological and structural characteristics regardless of age, demonstrating that sun protection behavior is a major key factor in the understanding of photoaging, so that men should be encouraged to start the use of cosmetic products and to perform selfcare.
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Affiliation(s)
- Victor Hugo Infante
- Sao Paulo University Faculty of Pharmaceutical Sciences, Ribeirao Preto, São Paulo, Brazil
| | - Patricia Maia Campos
- Sao Paulo University Faculty of Pharmaceutical Sciences, Ribeirao Preto, São Paulo, Brazil
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8
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de Bengy AF, Lamartine J, Sigaudo-Roussel D, Fromy B. Newborn and elderly skin: two fragile skins at higher risk of pressure injury. Biol Rev Camb Philos Soc 2022; 97:874-895. [PMID: 34913582 DOI: 10.1111/brv.12827] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 12/02/2021] [Accepted: 12/06/2021] [Indexed: 02/03/2023]
Abstract
Skin is a key organ maintaining internal homeostasis by performing many functions such as water loss prevention, body temperature regulation and protection from noxious substance absorption, microorganism intrusion and physical trauma. Skin ageing has been well studied and it is well known that physiological changes in the elderly result in higher skin fragility favouring the onset of skin diseases. For example, prolonged and/or high-intensity pressure may suppress local blood flow more easily, disturbing cell metabolism and inducing pressure injury (PI) formation. Pressure injuries (PIs) represent a significant problem worldwide and their prevalence remains too high. A higher PI prevalence is correlated with an elderly population. Newborn skin evolution has been less studied, but some data also report a higher PI prevalence in this population compared to older children, and several authors also consider this skin as physiologically fragile. In this review, we compare the characteristics of newborn and elderly skin in order to determine common features that may explain their fragility, especially regarding PI risk. We show that, despite differences in appearance, they share many common features leading to higher fragility to shear and pressure forces, not only at the structural level but also at the cellular and molecular level and in terms of physiology. Both newborn and elderly skin have: (i) a thinner epidermis; (ii) a thinner dermis containing a less-resistant collagen network, a higher collagen III:collagen I ratio and less elastin; (iii) a flatter dermal-epidermal junction (DEJ) with lower anchoring systems; and (iv) a thinner hypodermis, resulting in lower mechanical resistance to skin damage when pressure or shear forces are applied. At the molecular level, reduced expression of transforming growth factor β (TGFβ) and its receptor TGFβ receptor II (TβRII) is involved in the decreased production and/or increased degradation of various dermal extracellular matrix (ECM) components. Epidermal fragility also involves a higher skin pH which decreases the activity of key enzymes inducing ceramide deficiency and reduced barrier protection. This seems to be correlated with higher PI prevalence in some situations. Some data also suggest that stratum corneum (SC) dryness, which may disturb cell metabolism, also increases the risk of PI formation. Besides this structural fragility, several skin functions are also less efficient. Low applied pressures induce skin vessel vasodilation via a mechanism called pressure-induced vasodilation (PIV). Individuals lacking a normal PIV response show an early decrease in cutaneous blood flow in response to the application of very low pressures, reflecting vascular fragility of the skin that increases the risk of ulceration. Due to changes in endothelial function, skin PIV ability decreases during skin ageing, putting it at higher risk of PI formation. In newborns, some data lead us to hypothesize that the nitric oxide (NO) pathway is not fully functional at birth, which may partly explain the higher risk of PI formation in newborns. In the elderly, a lower PIV ability results from impaired functionality of skin innervation, in particular that of C-fibres which are involved in both touch and pain sensation and the PIV mechanism. In newborns, skin sensitivity differs from adults due to nerve system immaturity, but the role of this in PIV remains to be determined.
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Affiliation(s)
| | - Jérôme Lamartine
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, LBTI UMR5305, 7 Passage du Vercors, Lyon Cedex 7, F- 69367, France
| | - Dominique Sigaudo-Roussel
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, LBTI UMR5305, 7 Passage du Vercors, Lyon Cedex 7, F- 69367, France
| | - Bérengère Fromy
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, LBTI UMR5305, 7 Passage du Vercors, Lyon Cedex 7, F- 69367, France
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9
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Park KC, Kim SY, Khan G, Park ES. Ultrasonographic Assessment of the Cutaneous Changes Induced by Topical Use of Novel Peptides Comprising Laminin 5. Arch Plast Surg 2022; 49:304-309. [PMID: 35832163 PMCID: PMC9142241 DOI: 10.1055/s-0042-1748642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background
Laminin 5, which is found in the basement membrane of dermal-epidermal junction (DEJ), is a major adhesive component and associated with proliferating and migrating keratinocytes. In this study, we hypothesized that the topical application of the skin care products containing the novel peptides might restore the DEJ structure by deriving deposition of laminin 5 and promoting the keratinocyte migration. Here, we evaluated the restoration of DEJ by measuring the skin thickness.
Methods
Single-center retrospective analysis was performed on a total of 13 patients who underwent skin care using Baume L.C.E. (France, Laboratories d' Anjou) between January and March 2021. All patients applied the skin care agent for 2 weeks only on their left hand dorsum. Before the initiation of the application and after 2 weeks, both their hands were evaluated on photography and ultrasound. And the patients were asked to rate their satisfaction with the questionnaire after 2 weeks.
Results
There was no obvious improvement in photographic assessment and questionnaire. The post–pre difference of skin thickness in ultrasound images was, in left hand, 0.1 ± 0.37 in distal point and 0.1 ± 0.35 in proximal point; and, in right hand, 0 ± 0.17 in distal point and 0 ± 0.15 in proximal point, respectively. The pre–post difference was statistically significant in proximal point (
p
= 0.035).
Conclusion
Topical application of novel peptide derivative comprising laminin 5 demonstrated cutaneous changes including skin thickness, as assessed by ultrasound. Further studies using other modalities including dermal density measurement, three-dimensional photography, optical coherence tomography, or skin biopsy would be helpful to determine the skin-improving effects.
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Affiliation(s)
- Kyong Chan Park
- Department of Plastic and Reconstructive Surgery and College of Medicine, Soonchunhyang University, Bucheon, Korea
| | - Se Young Kim
- Department of Plastic and Reconstructive Surgery and College of Medicine, Soonchunhyang University, Gumi, Korea
| | - Galina Khan
- Department of Plastic and Reconstructive Surgery and College of Medicine, Soonchunhyang University, Bucheon, Korea
| | - Eun Soo Park
- Department of Plastic and Reconstructive Surgery and College of Medicine, Soonchunhyang University, Bucheon, Korea
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10
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Marjanovic EJ, Sharma V, Smith L, Pinder C, Moore TL, Manning JB, Dinsdale G, Berks M, Newton VL, Wilkinson S, Dickinson MR, Herrick AL, Watson REB, Murray AK. Polarisation-sensitive optical coherence tomography measurement of retardance in fibrosis, a non-invasive biomarker in patients with systemic sclerosis. Sci Rep 2022; 12:2893. [PMID: 35190594 PMCID: PMC8861061 DOI: 10.1038/s41598-022-06783-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 01/31/2022] [Indexed: 12/23/2022] Open
Abstract
Polarisation-sensitive optical coherence tomography (PS-OCT) offers a novel, non-invasive method of assessing skin fibrosis in the multisystem disease systemic sclerosis (SSc) by measuring collagen retardance. This study aimed to assess retardance as a biomarker in SSc. Thirty-one patients with SSc and 27 healthy controls (HC) underwent PS-OCT imaging. 'Skin score' was assessed by clinical palpation (0-3 scale). A subset of ten patients and ten age/sex-matched HC had a biopsy and longitudinal imaging. Histological assessment included quantification of epidermal thickness, collagen content (to assess fibrosis) and matrix metalloproteinase (MMP) activity (in situ zymography). PS-OCT images were assessed for epidermal thickness (structure) and fibrosis (retardance). Positive correlation was observed between epidermal thickness as measured by histology and structural PS-OCT (r = 0.79; p < 0.001). Retardance was: HC mean 0.21 (SD 0.21) radian/pixel; SSc skin score 0, 0.30 (0.19); skin score 1, 0.11 (0.16); skin score 2, 0.06 (0.12); skin score 3, 0.36 (0.35). Longitudinal retardance decreased at one-week across groups, increasing at one-month for HC/skin score 0-1; HC biopsy site retardance suggests scarring is akin to fibrosis. Relationships identified between retardance with both biopsy and skin score data indicate that retardance warrants further investigation as a suitable biomarker for SSc-related fibrosis.
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Affiliation(s)
- E J Marjanovic
- Musculoskeletal Research Group, Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Rm C215, Clinical Sciences Building, Salford, M6 8HD, UK
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
| | - V Sharma
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
- Centre for Dermatology Research, University of Manchester, Manchester, M13 9PL, UK
- Michigan State University College of Human Medicine, Lansing, MI, USA
| | - L Smith
- Photon Science Institute, University of Manchester, Manchester, M13 9PL, UK
| | - C Pinder
- School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK
| | - T L Moore
- Musculoskeletal Research Group, Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Rm C215, Clinical Sciences Building, Salford, M6 8HD, UK
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
| | - J B Manning
- Musculoskeletal Research Group, Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Rm C215, Clinical Sciences Building, Salford, M6 8HD, UK
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
| | - G Dinsdale
- Musculoskeletal Research Group, Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Rm C215, Clinical Sciences Building, Salford, M6 8HD, UK
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
| | - M Berks
- Centre for Imaging Sciences, Division of Informatics, Imaging and Data Sciences, University of Manchester, Manchester, M13 9PL, UK
| | - V L Newton
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
- Centre for Dermatology Research, University of Manchester, Manchester, M13 9PL, UK
| | - S Wilkinson
- Musculoskeletal Research Group, Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Rm C215, Clinical Sciences Building, Salford, M6 8HD, UK
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
| | - M R Dickinson
- School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK
- Photon Science Institute, University of Manchester, Manchester, M13 9PL, UK
| | - A L Herrick
- Musculoskeletal Research Group, Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Rm C215, Clinical Sciences Building, Salford, M6 8HD, UK
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
- NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester, M13 9PL, UK
| | - R E B Watson
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK
- Centre for Dermatology Research, University of Manchester, Manchester, M13 9PL, UK
- NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester, M13 9PL, UK
| | - A K Murray
- Musculoskeletal Research Group, Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Rm C215, Clinical Sciences Building, Salford, M6 8HD, UK.
- Salford Care Organisation, part of the Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK.
- Photon Science Institute, University of Manchester, Manchester, M13 9PL, UK.
- NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester, M13 9PL, UK.
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11
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Chauvel-Picard J, Bérot V, Tognetti L, Orte Cano C, Fontaine M, Lenoir C, Pérez-Anker J, Puig S, Dubois A, Forestier S, Monnier J, Jdid R, Cazorla G, Pedrazzani M, Sanchez A, Fischman S, Rubegni P, Del Marmol V, Malvehy J, Cinotti E, Perrot JL, Suppa M. Line-field confocal optical coherence tomography as a tool for three-dimensional in vivo quantification of healthy epidermis: A pilot study. JOURNAL OF BIOPHOTONICS 2022; 15:e202100236. [PMID: 34608756 DOI: 10.1002/jbio.202100236] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/16/2021] [Accepted: 09/23/2021] [Indexed: 05/12/2023]
Abstract
Epidermal three-dimensional (3D) topography/quantification has not been completely characterized yet. The recently developed line-field confocal optical coherence tomography (LC-OCT) provides real-time, high-resolution, in-vivo 3D imaging of the skin. This pilot study aimed at quantifying epidermal metrics (epidermal thicknesses, dermal-epidermal junction [DEJ] undulation and keratinocyte number/shape/size) using 3D LC-OCT. For each study participant (8 female, skin-type-II, younger/older volunteers), seven body sites were imaged with LC-OCT. Epidermal metrics were calculated by segmentations and measurements assisted by artificial intelligence (AI) when appropriate. Thicknesses of epidermis/SC, DEJ undulation and keratinocyte nuclei volume varied across body sites. Evidence of keratinocyte maturation was observed in vivo: keratinocyte nuclei being small/spherical near the DEJ and flatter/elliptical near the skin surface. Skin microanatomy can be quantified by combining LC-OCT and AI. This technology could be highly relevant to understand aging processes and conditions linked to epidermal disorders. Future clinical/research applications are to be expected in this scenario.
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Affiliation(s)
- Julie Chauvel-Picard
- Department of Craniomaxillofacial Surgery, University Hospital of Saint-Etienne, Saint-Etienne, France
| | - Vincent Bérot
- Department of Dermatology, University Hospital of Saint-Etienne, Saint-Etienne, France
| | - Linda Tognetti
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - Carmen Orte Cano
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Margot Fontaine
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Clément Lenoir
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Javiera Pérez-Anker
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain
- CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - Susana Puig
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain
- CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - Arnaud Dubois
- Université Paris-Saclay, Institut d'Optique Graduate School, Laboratoire Charles Fabry, Palaiseau, France
| | - Sandra Forestier
- Chanel Parfums Beauté, Innovation Research and Development, Pantin, France
| | - Jilliana Monnier
- Department of Dermatology and Skin Cancer, la Timone hospital, Assistance Publique-Hôpitaux de Marseille, Aix-Marseille University, Marseille, France
- Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD), Paris, France
| | - Randa Jdid
- Chanel Parfums Beauté, Innovation Research and Development, Pantin, France
| | - Gabriel Cazorla
- Chanel Parfums Beauté, Innovation Research and Development, Pantin, France
| | | | - Antoine Sanchez
- DAMAE Medical, Paris, France
- Department of Bioengineering, South Kensington Campus, Imperial College London, London, UK
| | | | - Pietro Rubegni
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - Véronique Del Marmol
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Joseph Malvehy
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain
- CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - Elisa Cinotti
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
- Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD), Paris, France
| | - Jean L Perrot
- Department of Dermatology, University Hospital of Saint-Etienne, Saint-Etienne, France
- Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD), Paris, France
| | - Mariano Suppa
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
- Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD), Paris, France
- Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium
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12
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Fischman S, Pérez-Anker J, Tognetti L, Di Naro A, Suppa M, Cinotti E, Viel T, Monnier J, Rubegni P, Del Marmol V, Malvehy J, Puig S, Dubois A, Perrot JL. Non-invasive scoring of cellular atypia in keratinocyte cancers in 3D LC-OCT images using Deep Learning. Sci Rep 2022; 12:481. [PMID: 35013485 PMCID: PMC8748986 DOI: 10.1038/s41598-021-04395-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 12/22/2021] [Indexed: 01/20/2023] Open
Abstract
Diagnosis based on histopathology for skin cancer detection is today's gold standard and relies on the presence or absence of biomarkers and cellular atypia. However it suffers drawbacks: it requires a strong expertise and is time-consuming. Moreover the notion of atypia or dysplasia of the visible cells used for diagnosis is very subjective, with poor inter-rater agreement reported in the literature. Lastly, histology requires a biopsy which is an invasive procedure and only captures a small sample of the lesion, which is insufficient in the context of large fields of cancerization. Here we demonstrate that the notion of cellular atypia can be objectively defined and quantified with a non-invasive in-vivo approach in three dimensions (3D). A Deep Learning (DL) algorithm is trained to segment keratinocyte (KC) nuclei from Line-field Confocal Optical Coherence Tomography (LC-OCT) 3D images. Based on these segmentations, a series of quantitative, reproducible and biologically relevant metrics is derived to describe KC nuclei individually. We show that, using those metrics, simple and more complex definitions of atypia can be derived to discriminate between healthy and pathological skins, achieving Area Under the ROC Curve (AUC) scores superior than 0.965, largely outperforming medical experts on the same task with an AUC of 0.766. All together, our approach and findings open the door to a precise quantitative monitoring of skin lesions and treatments, offering a promising non-invasive tool for clinical studies to demonstrate the effects of a treatment and for clinicians to assess the severity of a lesion and follow the evolution of pre-cancerous lesions over time.
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Affiliation(s)
| | - Javiera Pérez-Anker
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain
- CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - Linda Tognetti
- Dermatology Unit - Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - Angelo Di Naro
- Dermatology Unit - Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - Mariano Suppa
- Department of Dermatology, Université Libre de Bruxelles, Hôpital Erasme, Brussels, Belgium
- Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD), Paris, France
- Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium
| | - Elisa Cinotti
- Dermatology Unit - Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
- Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD), Paris, France
| | | | - Jilliana Monnier
- Groupe d'Imagerie Cutanée Non Invasive (GICNI) of the Société Française de Dermatologie (SFD), Paris, France
- Department of Dermatology and skin cancer, la Timone hospital, Assistance Publique-Hôpitaux de Marseille, Aix-Marseille University, Marseille, France
| | - Pietro Rubegni
- Dermatology Unit - Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - Véronique Del Marmol
- Department of Dermatology, Université Libre de Bruxelles, Hôpital Erasme, Brussels, Belgium
| | - Josep Malvehy
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain
- CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - Susana Puig
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain
- CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - Arnaud Dubois
- Université Paris-Saclay, Institut d'Optique Graduate School, Laboratoire Charles Fabry, Palaiseau, France
| | - Jean-Luc Perrot
- Department of Dermatology, University Hospital of Saint-Etienne, Saint-Etienne, France
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13
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Low E, Alimohammadiha G, Smith LA, Costello LF, Przyborski SA, von Zglinicki T, Miwa S. How good is the evidence that cellular senescence causes skin ageing? Ageing Res Rev 2021; 71:101456. [PMID: 34487917 PMCID: PMC8524668 DOI: 10.1016/j.arr.2021.101456] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/25/2021] [Accepted: 08/31/2021] [Indexed: 12/11/2022]
Abstract
Skin is the largest organ of the body with important protective functions, which become compromised with time due to both intrinsic and extrinsic ageing processes. Cellular senescence is the primary ageing process at cell level, associated with loss of proliferative capacity, mitochondrial dysfunction and significantly altered patterns of expression and secretion of bioactive molecules. Intervention experiments have proven cell senescence as a relevant cause of ageing in many organs. In case of skin, accumulation of senescence in all major compartments with ageing is well documented and might be responsible for most, if not all, the molecular changes observed during ageing. Incorporation of senescent cells into in-vitro skin models (specifically 3D full thickness models) recapitulates changes typically associated with skin ageing. However, crucial evidence is still missing. A beneficial effect of senescent cell ablation on skin ageing has so far only been shown following rather unspecific interventions or in transgenic mouse models. We conclude that evidence for cellular senescence as a relevant cause of intrinsic skin ageing is highly suggestive but not yet completely conclusive.
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Affiliation(s)
- Evon Low
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Ghazaleh Alimohammadiha
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Lucy A Smith
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Lydia F Costello
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Stefan A Przyborski
- Department of Biosciences, Durham University, South Road, Durham DH1 3LE, UK
| | - Thomas von Zglinicki
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK.
| | - Satomi Miwa
- Ageing Biology Laboratories, Newcastle University Biosciences Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK
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14
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Aleemardani M, Trikić MZ, Green NH, Claeyssens F. The Importance of Mimicking Dermal-Epidermal Junction for Skin Tissue Engineering: A Review. Bioengineering (Basel) 2021; 8:bioengineering8110148. [PMID: 34821714 PMCID: PMC8614934 DOI: 10.3390/bioengineering8110148] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/14/2021] [Accepted: 10/16/2021] [Indexed: 12/11/2022] Open
Abstract
There is a distinct boundary between the dermis and epidermis in the human skin called the basement membrane, a dense collagen network that creates undulations of the dermal-epidermal junction (DEJ). The DEJ plays multiple roles in skin homeostasis and function, namely, enhancing the adhesion and physical interlock of the layers, creating niches for epidermal stem cells, regulating the cellular microenvironment, and providing a physical boundary layer between fibroblasts and keratinocytes. However, the primary role of the DEJ has been determined as skin integrity; there are still aspects of it that are poorly investigated. Tissue engineering (TE) has evolved promising skin regeneration strategies and already developed TE scaffolds for clinical use. However, the currently available skin TE equivalents neglect to replicate the DEJ anatomical structures. The emergent ability to produce increasingly complex scaffolds for skin TE will enable the development of closer physical and physiological mimics to natural skin; it also allows researchers to study the DEJ effect on cell function. Few studies have created patterned substrates that could mimic the human DEJ to explore their significance. Here, we first review the DEJ roles and then critically discuss the TE strategies to create the DEJ undulating structure and their effects. New approaches in this field could be instrumental for improving bioengineered skin substitutes, creating 3D engineered skin, identifying pathological mechanisms, and producing and screening drugs.
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Affiliation(s)
- Mina Aleemardani
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
| | - Michael Zivojin Trikić
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
| | - Nicola Helen Green
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
| | - Frederik Claeyssens
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
- Correspondence:
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15
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Eckersley A, Ozols M, O'Connor C, Bell M, Sherratt MJ. Predicting and characterising protein damage in the extracellular matrix. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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16
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El Genedy-Kalyoncu M, Richter C, Surber C, Blume-Peytavi U, Kottner J. The effect of a basic skin care product on the structural strength of the dermo-epidermal junction: An exploratory, randomised, controlled split-body trial. Int Wound J 2021; 19:426-435. [PMID: 34121334 PMCID: PMC8762572 DOI: 10.1111/iwj.13643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 12/17/2022] Open
Abstract
Skin ageing is associated with various structural alterations including a decreased strength of the dermo‐epidermal adhesion increasing the risk for shear type injuries (skin tears). Topical applications of basic skin care products seem to reduce skin tear incidence. The suction blister method leads to the artificial and controlled separation of dermis and epidermis. Therefore, time to blister formation may be used as outcome measuring the strength of dermo‐epidermal adhesion. We conducted an exploratory, randomised, controlled trial with a split‐body design on forearms in healthy female subjects (n = 12; mean age 70.3 [SD 2.1] years). Forearms assigned to the intervention were treated twice daily with petrolatum for 8 weeks. Suction blisters were induced on forearms after 4 and 8 weeks and time to blister formation was measured. Stratum corneum and epidermal hydration were measured and epidermal thickness was assessed via optical coherence tomography. Time to blistering was longer and stratum corneum as well as epidermal hydration was consistently higher in intervention skin areas. We conclude that topical application of basic skin care products may improve mechanical adhesion of the dermo‐epidermal junction and that the parameter “time to blistering” is a suitable outcome to measure dermo‐epidermal adhesion strength in clinical research.
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Affiliation(s)
- Monira El Genedy-Kalyoncu
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Claudia Richter
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Surber
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland
| | - Ulrike Blume-Peytavi
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Jan Kottner
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Charité Center for Health and Human Sciences, Charité-Universitätsmedizin Berlin, Berlin, Germany
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17
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Mehrabi JN, Baugh EG, Fast A, Lentsch G, Balu M, Lee BA, Kelly KM. A Clinical Perspective on the Automated Analysis of Reflectance Confocal Microscopy in Dermatology. Lasers Surg Med 2021; 53:1011-1019. [PMID: 33476062 DOI: 10.1002/lsm.23376] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/30/2020] [Accepted: 12/25/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND OBJECTIVES Non-invasive optical imaging has the potential to provide a diagnosis without the need for biopsy. One such technology is reflectance confocal microscopy (RCM), which uses low power, near-infrared laser light to enable real-time in vivo visualization of superficial human skin from the epidermis down to the papillary dermis. Although RCM has great potential as a diagnostic tool, there is a need for the development of reliable image analysis programs, as acquired grayscale images can be difficult and time-consuming to visually assess. The purpose of this review is to provide a clinical perspective on the current state of artificial intelligence (AI) for the analysis and diagnostic utility of RCM imaging. STUDY DESIGN/MATERIALS AND METHODS A systematic PubMed search was conducted with additional relevant literature obtained from reference lists. RESULTS Algorithms used for skin stratification, classification of pigmented lesions, and the quantification of photoaging were reviewed. Image segmentation, statistical methods, and machine learning techniques are among the most common methods used to analyze RCM image stacks. The poor visual contrast within RCM images and difficulty navigating image stacks were mediated by machine learning algorithms, which allowed the identification of specific skin layers. CONCLUSIONS AI analysis of RCM images has the potential to increase the clinical utility of this emerging technology. A number of different techniques have been utilized but further refinements are necessary to allow consistent accurate assessments for diagnosis. The automated detection of skin cancers requires more development, but future applications are truly boundless, and it is compelling to envision the role that AI will have in the practice of dermatology. Lasers Surg. Med. © 2020 Wiley Periodicals LLC.
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Affiliation(s)
- Joseph N Mehrabi
- Department of Dermatology, University of California, Irvine, California, 92697
| | - Erica G Baugh
- Department of Dermatology, University of California, Irvine, California, 92697
| | - Alexander Fast
- Beckman Laser Institute, University of California Irvine, Irvine, California, 92612
| | - Griffin Lentsch
- Beckman Laser Institute, University of California Irvine, Irvine, California, 92612
| | - Mihaela Balu
- Beckman Laser Institute, University of California Irvine, Irvine, California, 92612
| | - Bonnie A Lee
- Department of Dermatology, University of California, Irvine, California, 92697
| | - Kristen M Kelly
- Department of Dermatology, University of California, Irvine, California, 92697.,Beckman Laser Institute, University of California Irvine, Irvine, California, 92612
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18
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Roig-Rosello E, Rousselle P. The Human Epidermal Basement Membrane: A Shaped and Cell Instructive Platform That Aging Slowly Alters. Biomolecules 2020; 10:E1607. [PMID: 33260936 PMCID: PMC7760980 DOI: 10.3390/biom10121607] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022] Open
Abstract
One of the most important functions of skin is to act as a protective barrier. To fulfill this role, the structural integrity of the skin depends on the dermal-epidermal junction-a complex network of extracellular matrix macromolecules that connect the outer epidermal layer to the underlying dermis. This junction provides both a structural support to keratinocytes and a specific niche that mediates signals influencing their behavior. It displays a distinctive microarchitecture characterized by an undulating pattern, strengthening dermal-epidermal connectivity and crosstalk. The optimal stiffness arising from the overall molecular organization, together with characteristic anchoring complexes, keeps the dermis and epidermis layers extremely well connected and capable of proper epidermal renewal and regeneration. Due to intrinsic and extrinsic factors, a large number of structural and biological changes accompany skin aging. These changes progressively weaken the dermal-epidermal junction substructure and affect its functions, contributing to the gradual decline in overall skin physiology. Most changes involve reduced turnover or altered enzymatic or non-enzymatic post-translational modifications, compromising the mechanical properties of matrix components and cells. This review combines recent and older data on organization of the dermal-epidermal junction, its mechanical properties and role in mechanotransduction, its involvement in regeneration, and its fate during the aging process.
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Affiliation(s)
- Eva Roig-Rosello
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS-Université Lyon 1, SFR BioSciences Gerland-Lyon Sud, 7 Passage du Vercors, 69367 Lyon, France;
- Roger Gallet SAS, 4 rue Euler, 75008 Paris, France
| | - Patricia Rousselle
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR 5305, CNRS-Université Lyon 1, SFR BioSciences Gerland-Lyon Sud, 7 Passage du Vercors, 69367 Lyon, France;
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19
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Graham HK, McConnell JC, Limbert G, Sherratt MJ. How stiff is skin? Exp Dermatol 2020; 28 Suppl 1:4-9. [PMID: 30698873 DOI: 10.1111/exd.13826] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2019] [Indexed: 12/17/2022]
Abstract
The measurement of the mechanical properties of skin (such as stiffness, extensibility and strength) is a key step in characterisation of both dermal ageing and disease mechanisms and in the assessment of tissue-engineered skin replacements. However, the biomechanical terminology and plethora of mathematical analysis approaches can be daunting to those outside the field. As a consequence, mechanical studies are often inaccessible to a significant proportion of the intended audience. Furthermore, devices for the measurement of skin function in vivo generate relative values rather than formal mechanical measures, therefore limiting the ability to compare studies. In this viewpoint essay, we discuss key biomechanical concepts and the influence of technical and biological factors (including the nature of the testing apparatus, length scale, donor age and anatomical site) on measured mechanical properties such as stiffness. Having discussed the current state-of-the-art in macro-mechanical and micromechanical measuring techniques and in mathematical and computational modelling methods, we then make suggestions as to how these approaches, in combination with 3D X-ray imaging and mechanics methods, may be adopted into a single strategy to characterise the mechanical behaviour of skin.
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Affiliation(s)
- Helen K Graham
- Division of Musculoskeletal& Dermatological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - James C McConnell
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Georges Limbert
- National Centre for Advanced Tribology at Southampton (nCATS), Bioengineering Science Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton, UK.,Biomechanics and Mechanobiology Laboratory, Biomedical Engineering Division, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Michael J Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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20
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Blair MJ, Jones JD, Woessner AE, Quinn KP. Skin Structure-Function Relationships and the Wound Healing Response to Intrinsic Aging. Adv Wound Care (New Rochelle) 2020; 9:127-143. [PMID: 31993254 DOI: 10.1089/wound.2019.1021] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/09/2019] [Indexed: 02/06/2023] Open
Abstract
Significance: Chronic wounds, such as diabetic foot ulcers, venous stasis ulcers, and pressure ulcers affect millions of Americans each year, and disproportionately afflict our increasingly older population. Older individuals are predisposed to wound infection, repeated trauma, and the development of chronic wounds. However, a complete understanding of how the attributes of aging skin affect the wound healing process has remained elusive. Recent Advances: A variety of studies have demonstrated that the dermal matrix becomes thinner, increasingly crosslinked, and fragmented with advanced age. These structural changes, as well as an increase in cell senescence, result in altered collagen fiber remodeling and increased stiffness. Studies combining mechanical testing with advanced imaging techniques are providing new insights into the relationships between these age-related changes. Emerging research into the mechanobiology of aging and the wound healing process indicate that the altered mechanical environment of aged skin may have a significant effect on age-related delays in healing. Critical Issues: The interpretation and synthesis of clinical studies is confounded by the effects of common comorbidities that also contribute to the development of chronic wounds. A lack of quantitative biomarkers of wound healing and age-related changes makes understanding structure-function relationships during the wound healing process challenging. Future Directions: Additional work is needed to establish quantitative and mechanistic relationships among age-related changes in the skin microstructure, mechanical function, and the cellular responses to wound healing.
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Affiliation(s)
- Michael J. Blair
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas
| | - Jake D. Jones
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas
| | - Alan E. Woessner
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas
| | - Kyle P. Quinn
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, Arkansas
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21
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Jeong S, Yoon S, Kim S, Jung J, Kor M, Shin K, Lim C, Han HS, Lee H, Park KY, Kim J, Chung HJ, Kim HJ. Anti-Wrinkle Benefits of Peptides Complex Stimulating Skin Basement Membrane Proteins Expression. Int J Mol Sci 2019; 21:E73. [PMID: 31861912 PMCID: PMC6981886 DOI: 10.3390/ijms21010073] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/15/2019] [Accepted: 12/18/2019] [Indexed: 12/16/2022] Open
Abstract
The dermal-epidermal junction (DEJ) provides a physical and biological interface between the epidermis and the dermis. In addition to providing a structural integrity, the DEJ also acts as a passageway for molecular transport. Based on the recently reported importance of the DEJ in skin aging, novel peptide derivatives have been tested for their effects on basement membrane (BM) protein expressions in cultured human epidermal keratinocytes. As a result, protein expressions of collagen XVII, laminin and nidogen were stimulated by the test peptide and peptides complex. Further ex vivo evaluation using excised human skin, confirmed that the topical application of the peptides complex significantly increased dermal collagen expression, as well as expressions of collagen XVII and laminin. Interestingly, while the origin of the laminin protein is epidermal keratinocytes, the immunohistochemical staining of skin showed that laminin was only detected in the uppermost layer of the dermis, which suggests a tight assembly of laminin protein onto the dermal side of the DEJ. These results suggest that a peptide complex could improve the structural properties of the DEJ through its ability to stimulate BM proteins. In order to evaluate the anti-wrinkle benefits of the peptide complex in vivo, a clinical study was performed on 22 healthy Asian female volunteers older than 40 years. As a result, significant improvements in skin wrinkles for all of the five sites were observed after two weeks, as assessed by skin topographic measurements. Collectively, these results demonstrate the anti-aging efficacy of the peptides complex.
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Affiliation(s)
- Sekyoo Jeong
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Seokjeong Yoon
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Sungwoo Kim
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Juyeon Jung
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Myungho Kor
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Kayoung Shin
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Chaejin Lim
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Hyo Sun Han
- P&K Skin Research Center Company Limited, Seoul 07236, Korea; (H.S.H.); (H.L.)
| | - Haekwang Lee
- P&K Skin Research Center Company Limited, Seoul 07236, Korea; (H.S.H.); (H.L.)
| | - Kyeong-Yong Park
- Research Division, Cha Meditech Corporation, Daejeon 34025, Korea;
| | | | - Hwa Jee Chung
- Research Division, Incospharm Corporation, Daejeon 34036, Korea; (S.J.); (S.Y.); (S.K.); (J.J.); (M.K.); (K.S.); (C.L.); (H.J.C.)
| | - Hyun Jung Kim
- CHA Bio F&C, Seongnam 13488, Korea;
- Department of Dermatology, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea
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22
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Yonezawa T, Momota R, Iwano H, Zhao S, Hakozaki T, Soh C, Sawaki S, Toyama K, Oohashi T. Unripe peach (Prunus persica) extract ameliorates damage from UV irradiation and improved collagen XVIII expression in 3D skin model. J Cosmet Dermatol 2019; 18:1507-1515. [PMID: 30548159 DOI: 10.1111/jocd.12841] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/28/2018] [Accepted: 11/09/2018] [Indexed: 01/24/2023]
Abstract
INTRODUCTION Collagen type XVIII regulates cellular activities of adjacent cells at the dermal-epidermal junction (DEJ). To investigate its possible changes during aging, we compared its mRNA levels and protein localization in skin samples from female participants aged 20-70 years old. In addition, we evaluated the beneficial effects of unripe peach extracts in a 3D skin model. METHODS Sun-exposed or sun-protected female skin samples were compared by DNA array or by immunohistochemistry for basement membrane components. To evaluate protective effects of fresh unripe peach extract, UV-B irradiated human 3D skin models were incubated in the presence or absence of the extract, followed by measurements of mRNA levels by real-time PCR, or by immunohistochemistry. RESULTS In aged skin samples, COL18A1 mRNA levels were lower and the protein localization exhibited less intensive signal by anti-collagen type XVIII immunostaining. As observed in the skin tissues, collagen type XVIII exists at the DEJ in the 3D skin model. Fresh unripe peach extract significantly improved mRNA levels and partially localizations of collagen type XVIII, suggesting that fresh unripe peach extract ameliorates DEJ damages caused by UV-B irradiation. CONCLUSION Collagen type XVIII and fresh unripe peach extract can be promising protective cosmetic strategies against skin aging.
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Affiliation(s)
- Tomoko Yonezawa
- Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ryusuke Momota
- Human Morphology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | | | - Steven Zhao
- The Procter & Gamble Company, Cincinnati, Ohio
| | | | | | | | | | - Toshitaka Oohashi
- Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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23
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Shirshin EA, Yakimov BP, Darvin ME, Omelyanenko NP, Rodionov SA, Gurfinkel YI, Lademann J, Fadeev VV, Priezzhev AV. Label-Free Multiphoton Microscopy: The Origin of Fluorophores and Capabilities for Analyzing Biochemical Processes. BIOCHEMISTRY (MOSCOW) 2019; 84:S69-S88. [PMID: 31213196 DOI: 10.1134/s0006297919140050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Multiphoton microscopy (MPM) is a method of molecular imaging and specifically of intravital imaging that is characterized by high spatial resolution in combination with a greater depth of penetration into the tissue. MPM is a multimodal method based on detection of nonlinear optical signals - multiphoton fluorescence and optical harmonics - and also allows imaging with the use of the parameters of fluorescence decay kinetics. This review describes and discusses photophysical processes within major reporter molecules used in MPM with endogenous contrasts and summarizes several modern experiments that illustrate the capabilities of label-free MPM for molecular imaging of biochemical processes in connective tissue and cells.
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Affiliation(s)
- E A Shirshin
- Lomonosov Moscow State University, Faculty of Physics, Moscow, 119991, Russia. .,Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, 108840, Moscow, Russia
| | - B P Yakimov
- Lomonosov Moscow State University, Faculty of Physics, Moscow, 119991, Russia
| | - M E Darvin
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, 10117, Germany
| | - N P Omelyanenko
- N. N. Priorov National Medical Research Center of Traumatology and Orthopaedics, Moscow, 127299, Russia
| | - S A Rodionov
- N. N. Priorov National Medical Research Center of Traumatology and Orthopaedics, Moscow, 127299, Russia
| | - Y I Gurfinkel
- Medical Scientific-Educational Center of Lomonosov Moscow State University, Moscow, 119192, Russia
| | - J Lademann
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, 10117, Germany
| | - V V Fadeev
- Lomonosov Moscow State University, Faculty of Physics, Moscow, 119991, Russia
| | - A V Priezzhev
- Lomonosov Moscow State University, Faculty of Physics, Moscow, 119991, Russia
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24
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Fernandez E, Marull‐Tufeu S. 3D imaging of human epidermis micromorphology by combining fluorescent dye, optical clearing and confocal microscopy. Skin Res Technol 2019; 25:735-742. [DOI: 10.1111/srt.12710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 04/14/2019] [Indexed: 01/21/2023]
Affiliation(s)
- Eric Fernandez
- Yves Rocher – Direction Innovation & Développement – Laboratoire Application Cutanée Issy les Moulineaux France
| | - Sylvie Marull‐Tufeu
- Yves Rocher – Direction Innovation & Développement – Laboratoire Application Cutanée Issy les Moulineaux France
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25
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Human Skin: Composition, Structure and Visualisation Methods. STUDIES IN MECHANOBIOLOGY, TISSUE ENGINEERING AND BIOMATERIALS 2019. [DOI: 10.1007/978-3-030-13279-8_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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26
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Shirshin EA, Gurfinkel YI, Priezzhev AV, Fadeev VV, Lademann J, Darvin ME. Two-photon autofluorescence lifetime imaging of human skin papillary dermis in vivo: assessment of blood capillaries and structural proteins localization. Sci Rep 2017; 7:1171. [PMID: 28446767 PMCID: PMC5430894 DOI: 10.1038/s41598-017-01238-w] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/28/2017] [Indexed: 11/27/2022] Open
Abstract
The papillary dermis of human skin is responsible for its biomechanical properties and for supply of epidermis with chemicals. Dermis is mainly composed of structural protein molecules, including collagen and elastin, and contains blood capillaries. Connective tissue diseases, as well as cardiovascular complications have manifestations on the molecular level in the papillary dermis (e.g. alteration of collagen I and III content) and in the capillary structure. In this paper we assessed the molecular structure of internal and external regions of skin capillaries using two-photon fluorescence lifetime imaging (FLIM) of endogenous compounds. It was shown that the capillaries are characterized by a fast fluorescence decay, which is originated from red blood cells and blood plasma. Using the second harmonic generation signal, FLIM segmentation was performed, which provided for spatial localization and fluorescence decay parameters distribution of collagen I and elastin in the dermal papillae. It was demonstrated that the lifetime distribution was different for the inner area of dermal papillae around the capillary loop that was suggested to be due to collagen III. Hence, we propose a generalized approach to two-photon imaging of the papillary dermis components, which extends the capabilities of this technique in skin diagnosis.
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Affiliation(s)
- Evgeny A Shirshin
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia.
| | - Yury I Gurfinkel
- Research Clinical Center of JSC "Russian Railways", Moscow, Russia
| | | | - Victor V Fadeev
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
| | - Juergen Lademann
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité -Universitätsmedizin Berlin, Berlin, Germany
| | - Maxim E Darvin
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité -Universitätsmedizin Berlin, Berlin, Germany.
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