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Jay Sarkar T, Hermsmeier M, L. Ross J, Scott Herron G. Genetic and Epigenetic Influences on Cutaneous Cellular Senescence. Physiology (Bethesda) 2022. [DOI: 10.5772/intechopen.101152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Skin is the largest human organ system, and its protective function is critical to survival. The epithelial, dermal, and subcutaneous compartments are heterogeneous mixtures of cell types, yet they all display age-related skin dysfunction through the accumulation of an altered phenotypic cellular state called senescence. Cellular senescence is triggered by complex and dynamic genetic and epigenetic processes. A senescence steady state is achieved in different cell types under various and overlapping conditions of chronological age, toxic injury, oxidative stress, replicative exhaustion, DNA damage, metabolic dysfunction, and chromosomal structural changes. These inputs lead to outputs of cell-cycle withdrawal and the appearance of a senescence-associated secretory phenotype, both of which accumulate as tissue pathology observed clinically in aged skin. This review details the influence of genetic and epigenetic factors that converge on normal cutaneous cellular processes to create the senescent state, thereby dictating the response of the skin to the forces of both intrinsic and extrinsic aging. From this work, it is clear that no single biomarker or process leads to senescence, but that it is a convergence of factors resulting in an overt aging phenotype.
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Pararasa C, Messenger DJ, Barrett KE, Hyliands D, Talbot D, Fowler MI, Kawatra T, Gunn DA, Lim FL, Wainwright LJ, Jenkins G, Griffiths HR. Lower polyunsaturated fatty acid levels and FADS2 expression in adult compared to neonatal keratinocytes are associated with FADS2 promotor hypermethylation. Biochem Biophys Res Commun 2022; 601:9-15. [PMID: 35219001 PMCID: PMC8993048 DOI: 10.1016/j.bbrc.2022.02.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/06/2022] [Accepted: 02/16/2022] [Indexed: 11/27/2022]
Abstract
Keratinocytes produce lipids that are critical for the skin barrier, however, little is known about the impact of age on fatty acid (FA) biosynthesis in these cells. We have examined the relationship between keratinocyte FA composition, lipid biosynthetic gene expression, gene promoter methylation and age. Expression of elongase (ELOVL6 and 7) and desaturase (FADS1 and 2) genes was lower in adult versus neonatal keratinocytes, and was associated with lower concentrations of n-7, n-9 and n-10 polyunsaturated FA in adult cells. Consistent with these findings, transient FADS2 knockdown in neonatal keratinocytes mimicked the adult keratinocyte FA profile in neonatal cells. Interrogation of methylation levels across the FADS2 locus (53 genomic sites) revealed differential methylation of 15 sites in neonatal versus adult keratinocytes, of which three hypermethylated sites in adult keratinocytes overlapped with a SMARCA4 protein binding site in the FADS2 promoter.
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Affiliation(s)
- C Pararasa
- College of Health and Life Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK
| | - D J Messenger
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - K E Barrett
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - D Hyliands
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - D Talbot
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - M I Fowler
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - T Kawatra
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - D A Gunn
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - F L Lim
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - L J Wainwright
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - G Jenkins
- Unilever R&D, Colworth Science Park, Sharnbrook, Bedfordshire, MK44 1LQ, UK
| | - H R Griffiths
- College of Health and Life Sciences, Aston University, Aston Triangle, Birmingham, B4 7ET, UK; Faculty of Medicine, Health and Life Sciences, Swansea University, SA2 8PP, UK.
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3
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Li MY, Flora P, Pu H, Bar C, Silva J, Cohen I, Galbo PM, Liu H, Yu X, Jin J, Koseki H, D'Orazio JA, Zheng D, Ezhkova E. UV-induced reduction in Polycomb repression promotes epidermal pigmentation. Dev Cell 2021; 56:2547-2561.e8. [PMID: 34473941 PMCID: PMC8521440 DOI: 10.1016/j.devcel.2021.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 07/08/2021] [Accepted: 08/06/2021] [Indexed: 12/11/2022]
Abstract
Ultraviolet (UV) radiation is a prime environmental stressor that our epidermis is exposed to on a daily basis. To avert UV-induced damage, epidermal stem cells (EpSCs) become pigmented via a process of heterotypic interaction between melanocytes and EpSCs; however, the molecular mechanisms of this interaction are not well understood. In this study, we show that the function of a key chromatin regulator, the Polycomb complex, was reduced upon UV exposure in human and mouse epidermis. Genetic ablation of key Polycomb subunits in murine EpSCs, mimicking depletion upon UV exposure, results in an increased number of epidermal melanocytes and subsequent epidermal pigmentation. Genome-wide transcriptional and chromatin studies show that Polycomb regulates the expression of UV-responsive genes and identifies type II collagen (COL2A1) as a critical secreted regulator of melanogenesis and epidermal pigmentation. Together, our findings show how UV exposure induces Polycomb-mediated changes in EpSCs to affect melanocyte behavior and promote epidermal pigmentation.
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Affiliation(s)
- Meng-Yen Li
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Pooja Flora
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Hong Pu
- The Markey Cancer Center, Department of Toxicology and Cancer Biology, Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - Carmit Bar
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Jose Silva
- Department of Pathology, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, USA
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Phillip M Galbo
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Hequn Liu
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Xufen Yu
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jian Jin
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Haruhiko Koseki
- Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences (RIKEN-IMS) 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; AMED-CREST, 1-7-22 Suehiro-cho Tsurumi-ku, Yokohama 230-0045, Japan
| | - John A D'Orazio
- The Markey Cancer Center, Department of Toxicology and Cancer Biology, Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Departments of Genetics, Neurology, and Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA.
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5
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Gonzalez TJ, Lu Y, Boswell M, Boswell W, Medrano G, Walter S, Ellis S, Savage M, Varga ZM, Lawrence C, Sanders G, Walter RB. Fluorescent light exposure incites acute and prolonged immune responses in zebrafish (Danio rerio) skin. Comp Biochem Physiol C Toxicol Pharmacol 2018; 208:87-95. [PMID: 28965927 PMCID: PMC5876079 DOI: 10.1016/j.cbpc.2017.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/19/2017] [Accepted: 09/22/2017] [Indexed: 01/13/2023]
Abstract
Artificial light produces an emission spectrum that is considerably different than the solar spectrum. Artificial light has been shown to affect various behavior and physiological processes in vertebrates. However, there exists a paucity of data regarding the molecular genetic effects of artificial light exposure. Previous studies showed that one of the commonly used fluorescent light source (FL; 4100K or "cool white") can affect signaling pathways related to maintenance of circadian rhythm, cell cycle progression, chromosome segregation, and DNA repair/recombination in the skin of male Xiphophorus maculatus. These observations raise questions concerning the kinetics of the FL induced gene expression response, and which biological functions become modulated at various times after light exposure. To address these questions, we exposed zebrafish to 4100K FL and utilized RNA-Seq to assess gene expression changes in skin at various times (1 to 12h) after FL exposure. We found 4100K FL incites a robust early (1-2h) transcriptional response, followed by a more protracted late response (i.e., 4-12h). The early transcriptional response involves genes associated with cell migration/infiltration and cell proliferation as part of an overall increase in immune function and inflammation. The protracted late transcriptional response occurs within gene sets predicted to maintain and perpetuate the inflammatory response, as well as suppression of lipid, xenobiotic, and melatonin metabolism.
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Affiliation(s)
- Trevor J Gonzalez
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - Yuan Lu
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - Mikki Boswell
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - William Boswell
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - Geraldo Medrano
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - Sean Walter
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - Samuel Ellis
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA
| | - Markita Savage
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
| | - Zoltan M Varga
- Zebrafish International Resource Center (ZIRC), 5274 University of Oregon Eugene, OR 97403, USA.
| | - Christian Lawrence
- Children's Hospital Boston Karp Family Research Laboratories, 4th Floor One Blackfan Circle Boston, MA 02115, USA.
| | - George Sanders
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA 98195-7340, USA.
| | - Ronald B Walter
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA.
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Markiewicz E, Idowu OC. Personalized skincare: from molecular basis to clinical and commercial applications. Clin Cosmet Investig Dermatol 2018; 11:161-171. [PMID: 29692619 PMCID: PMC5903487 DOI: 10.2147/ccid.s163799] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Individual responses of human skin to the environmental stress are determined by differences in the anatomy and physiology that are closely linked to the genetic characteristics such as pigmentation. Ethnic skin phenotypes can be distinguished based on defined genotypic traits, structural organization and compartmentalized sensitivity to distinct extrinsic aging factors. These differences are not only responsible for the variation in skin performance after exposure to damaging conditions, but can also affect the mechanisms of drug absorption, sensitization and other longer term effects. The unique characteristics of the individual skin function and, particularly, of the ethnic skin type are currently considered to shape the future of clinical and pharmacologic interventions as a basis for personalized skincare. Individual approaches to skincare render a novel and actively growing area with a range of biomedical and commercial applications within cosmetics industry. In this review, we summarize the aspects of the molecular and clinical manifestations of the environmental stress on human skin and proposed protective mechanisms that are linked to ethnic differences and pathophysiology of extrinsic skin aging. We subsequently discuss the possible applications and translation of this knowledge into personalized skincare.
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Affiliation(s)
- Ewa Markiewicz
- Research & Development, Hexis Lab, Science Central, The Core, Bath Lane, Newcastle upon Tyne, UK
| | - Olusola Clement Idowu
- Research & Development, Hexis Lab, Science Central, The Core, Bath Lane, Newcastle upon Tyne, UK
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Kimball AB, Alora-Palli MB, Tamura M, Mullins LA, Soh C, Binder RL, Houston NA, Conley ED, Tung JY, Annunziata NE, Bascom CC, Isfort RJ, Jarrold BB, Kainkaryam R, Rocchetta HL, Swift DD, Tiesman JP, Toyama K, Xu J, Yan X, Osborne R. Age-induced and photoinduced changes in gene expression profiles in facial skin of Caucasian females across 6 decades of age. J Am Acad Dermatol 2017; 78:29-39.e7. [PMID: 29146147 DOI: 10.1016/j.jaad.2017.09.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 08/19/2017] [Accepted: 09/04/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Intrinsic and extrinsic factors, including ultraviolet irradiation, lead to visible signs of skin aging. OBJECTIVE We evaluated molecular changes occurring in photoexposed and photoprotected skin of white women 20 to 74 years of age, some of whom appeared substantially younger than their chronologic age. METHODS Histologic and transcriptomics profiling were conducted on skin biopsy samples of photoexposed (face and dorsal forearm) or photoprotected (buttocks) body sites from 158 women. 23andMe genotyping determined genetic ancestry. RESULTS Gene expression and ontologic analysis revealed progressive changes from the 20s to the 70s in pathways related to oxidative stress, energy metabolism, senescence, and epidermal barrier; these changes were accelerated in the 60s and 70s. The gene expression patterns from the subset of women who were younger-appearing were similar to those in women who were actually younger. LIMITATIONS Broader application of these findings (eg, across races and Fitzpatrick skin types) will require further studies. CONCLUSIONS This study demonstrates a wide range of molecular processes in skin affected by aging, providing relevant targets for improving the condition of aging skin at different life stages and defining a molecular pattern of epidermal gene expression in women who appear younger than their chronologic age.
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Affiliation(s)
- Alexa B Kimball
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
| | - Maria B Alora-Palli
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | | | | | | | | | - Neil A Houston
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | | | | | | | | | | | | | | | | | | | | | | | - Jun Xu
- The Procter & Gamble Company, Cincinnati, Ohio
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8
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In vivo confocal Raman spectroscopy for intrinsic aging and photoaging assessment. J Dermatol Sci 2017; 88:199-206. [DOI: 10.1016/j.jdermsci.2017.07.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 06/09/2017] [Accepted: 07/14/2017] [Indexed: 12/18/2022]
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9
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Tubulin Beta-3 Chain as a New Candidate Protein Biomarker of Human Skin Aging: A Preliminary Study. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017. [PMID: 28626498 PMCID: PMC5463169 DOI: 10.1155/2017/5140360] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Skin aging is a complex process, and a lot of efforts have been made to identify new and specific targets that could help to diagnose, prevent, and treat skin aging. Several studies concerning skin aging have analyzed the changes in gene expression, and very few investigations have been performed at the protein level. Moreover, none of these proteomic studies has used a global quantitative labeled proteomic offgel approach that allows a more accurate description of aging phenotype. We applied such an approach on human primary keratinocytes obtained from sun-nonexposed skin biopsies of young and elderly women. A total of 517 unique proteins were identified, and 58 proteins were significantly differentially expressed with 40 that were downregulated and 18 upregulated with aging. Gene ontology and pathway analysis performed on these 58 putative biomarkers of skin aging evidenced that these dysregulated proteins were mostly involved in metabolism and cellular processes such as cell cycle and signaling pathways. Change of expression of tubulin beta-3 chain was confirmed by western blot on samples originated from several donors. Thus, this study suggested the tubulin beta-3 chain has a promising biomarker in skin aging.
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Parisi N, Matts PJ, Lever R, Hadgraft J, Lane ME. Hexamidine salts - applications in skin health and personal care products. Int J Cosmet Sci 2017; 39:361-365. [DOI: 10.1111/ics.12392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 01/23/2017] [Indexed: 11/30/2022]
Affiliation(s)
- N. Parisi
- UCL School of Pharmacy; 29-39 Brunswick Square London WC1N 1AX UK
| | - P. J. Matts
- Procter & Gamble Technical Centres Ltd, London Innovation Centre; Whitehall Lane Egham Surrey TW20 9NW UK
| | - R. Lever
- UCL School of Pharmacy; 29-39 Brunswick Square London WC1N 1AX UK
| | - J. Hadgraft
- UCL School of Pharmacy; 29-39 Brunswick Square London WC1N 1AX UK
| | - M. E. Lane
- UCL School of Pharmacy; 29-39 Brunswick Square London WC1N 1AX UK
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11
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Mercurio D, Jdid R, Morizot F, Masson P, Maia Campos P. Morphological, structural and biophysical properties of French and Brazilian photoaged skin. Br J Dermatol 2016; 174:553-61. [DOI: 10.1111/bjd.14280] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2015] [Indexed: 12/30/2022]
Affiliation(s)
- D.G. Mercurio
- NEATEC; Faculty of Pharmaceutical Science of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - R. Jdid
- Chanel Research and Technology Centre; Pantin France
| | - F. Morizot
- Chanel Research and Technology Centre; Pantin France
| | | | - P.M.B.G. Maia Campos
- NEATEC; Faculty of Pharmaceutical Science of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
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12
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Caetano LDVN, Soares JLM, Bagatin E, Miot HA. Reliable assessment of forearm photoageing by high-frequency ultrasound: a cross-sectional study. Int J Cosmet Sci 2015; 38:170-7. [DOI: 10.1111/ics.12272] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 08/24/2015] [Indexed: 12/18/2022]
Affiliation(s)
- L. de V. N. Caetano
- Dermatology Department; Universidade Federal de São Paulo - UNIFESP; R Borges Lagoa, 508 São Paulo SP 04038-001 Brazil
| | - J. L. M. Soares
- Dermatology Department; Universidade Federal de São Paulo - UNIFESP; R Borges Lagoa, 508 São Paulo SP 04038-001 Brazil
| | - E. Bagatin
- Dermatology Department; Universidade Federal de São Paulo - UNIFESP; R Borges Lagoa, 508 São Paulo SP 04038-001 Brazil
| | - H. A. Miot
- Department of Dermatology and Radiotherapy; Universidade Estadual Paulista “Julio de Mesquita Filho” - UNESP; Campus Universitário de Rubião Jr. Botucatu SP 18618-000 Brazil
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13
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Preparation and characterisation of hexamidine salts. Int J Pharm 2015; 493:404-11. [PMID: 26235920 DOI: 10.1016/j.ijpharm.2015.07.071] [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: 06/03/2015] [Revised: 07/26/2015] [Accepted: 07/28/2015] [Indexed: 11/22/2022]
Abstract
Hexamidine diisethionate (HEX D) has been used in the personal care industry and in a number of over-the-counter (OTC) drug products as an antimicrobial agent since the 1950's. Recently, the compound has also been investigated for its beneficial effects on skin health. Surprisingly, there is only limited information describing the physicochemical properties of this compound in the literature. The objective of this work was therefore to conduct a comprehensive programme of characterisation of HEX D as well as its dihydrochloride salt (HEX H). HEX H was prepared from HEX D by a simple acid addition reaction. Both salts were characterised using Nuclear Magnetic Resonance (NMR), Differential scanning calorimetry (DSC), and Thermogravimetric analysis (TGA). A new high performance liquid chromatographic method was developed and validated for both compounds. The pH in aqueous solution as well as respective distribution coefficients between octanol and pH 7.4 buffer were also determined. Finally, solubility and short term stability studies were conducted in a range of solvents. NMR analysis confirmed the preparation of HEX H from HEX D. Thermal analysis indicated the melting points of HEX D and HEX H were 225°C and 266°C respectively. HPLC analysis confirmed the purity of both salts. LogD values at pH 7.4 were -0.74 for HEX D and -0.70 for HEX H respectively. The physicochemical properties of two HEX salts have been established using a range of analytical approaches. Detailed solubility and stability data have also been collated. This information will be useful in the design of novel formulations for targeted delivery of these compounds to the skin.
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14
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Kishikawa A, Ashour A, Zhu Q, Yasuda M, Ishikawa H, Shimizu K. Multiple Biological Effects of Olive Oil By-products such as Leaves, Stems, Flowers, Olive Milled Waste, Fruit Pulp, and Seeds of the Olive Plant on Skin. Phytother Res 2015; 29:877-86. [DOI: 10.1002/ptr.5326] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 12/17/2014] [Accepted: 02/17/2015] [Indexed: 01/19/2023]
Affiliation(s)
- Asuka Kishikawa
- Department of Agro-environmental Sciences, Faculty of Agriculture; Kyushu University; Fukuoka 812-8581 Japan
| | - Ahmed Ashour
- Department of Pharmacognosy, Faculty of Pharmacy; Mansoura University; Mansoura Egypt
| | - Qinchang Zhu
- Department of Agro-environmental Sciences, Faculty of Agriculture; Kyushu University; Fukuoka 812-8581 Japan
| | - Midori Yasuda
- Department of Health and Nutrition Science; Nishikyushu University; Saga 842-8585 Japan
| | - Hiroya Ishikawa
- International College of Arts and Sciences; Fukuoka Women's University; Fukuoka 813-8529 Japan
| | - Kuniyoshi Shimizu
- Department of Agro-environmental Sciences, Faculty of Agriculture; Kyushu University; Fukuoka 812-8581 Japan
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15
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Al-Nuaimi Y, Sherratt MJ, Griffiths CEM. Skin health in older age. Maturitas 2014; 79:256-64. [PMID: 25213594 DOI: 10.1016/j.maturitas.2014.08.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 08/08/2014] [Indexed: 01/09/2023]
Abstract
As people age, their skin undergoes changes which result in reduced elasticity, increased fragility and an altered immune response; in essence it becomes frail. As life expectancy is increasing the health of older skin is becoming a progressively more important facet of overall care. In addition to the consequences of ageing for otherwise healthy skin, the relative incidence of some dermatological conditions is age-dependent. In particular, xerosis (dry skin), cutaneous malignancies and skin injuries are more common in older people. In this review we describe the functional consequences of skin ageing and discuss the current evidence on how skin health may be maintained and dermatological conditions prevented in an ageing population. The future of dermatological health-care provision in the older population relies on the development of coordinated pathways of care, which start from a young age. Better quality research coordinated by the establishment of institutions dealing with skin health and ageing would be a method of addressing these needs.
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Affiliation(s)
- Yusur Al-Nuaimi
- Manchester Academic Health Sciences Centre, The University of Manchester, Manchester M13 9PT, UK; The Dermatology Centre, Barnes Building, Salford Royal NHS Foundation Trust M6 8HD, UK.
| | - Michael J Sherratt
- Manchester Academic Health Sciences Centre, The University of Manchester, Manchester M13 9PT, UK; School of Biomedicine, The University of Manchester, Manchester M13 9PT, UK
| | - Christopher E M Griffiths
- Manchester Academic Health Sciences Centre, The University of Manchester, Manchester M13 9PT, UK; The Dermatology Centre, Barnes Building, Salford Royal NHS Foundation Trust M6 8HD, UK
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16
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Aguilera J, de Gálvez MV, Sánchez-Roldán C, Herrera-Ceballos E. New advances in protection against solar ultraviolet radiation in textiles for summer clothing. Photochem Photobiol 2014; 90:1199-206. [PMID: 24861801 DOI: 10.1111/php.12292] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 05/14/2014] [Indexed: 12/17/2022]
Abstract
Clothing is considered one of the most important tools for photoprotection against harmful solar ultraviolet radiation (UVR). The standard for sun-protective clothing is based on erythema despite other biological effects of UVR on the skin. We analyzed the potential protection against UVR in fabrics destined for summer clothing based on several action spectra. We examined 50 garments classified by type of fabric composition, structure of the fiber yarn and color. The ultraviolet protection factor was calculated based on fabric ultraviolet transmittance corrected for erythema according to the EU standard E-13758 as well as the UVA transmittance of fabrics. UVR protection was also analyzed in base of different action spectra as for previtamin D3, nonmelanoma skin cancer, photoimmunosuppression and photoaging. Most knitted fabrics used for sports T-shirts offered excellent ratings for ultraviolet protection while normal shirts showed very low ratings, particularly against photoaging. The cover is the most influential variable in fabric photoprotection, having an exponential relationship with the UPF. The relation between cover and UVA protection was linearly negative. Information about ultraviolet protection in textiles used for summer clothing should be included in labeling as some types of fabrics, especially those used for shirts, offer very low UVR protection.
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Affiliation(s)
- José Aguilera
- Photobiological Dermatology Laboratory, Medical Research Centre, Department of Dermatology and Medicine, Faculty of Medicine, University of Malaga, Malaga, Spain
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Osborne R, Carver RS, Mullins LA, Finlay DR. Practical application of cellular bioenergetics to the care of aged skin. Br J Dermatol 2014; 169 Suppl 2:32-8. [PMID: 23786618 DOI: 10.1111/bjd.12439] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2013] [Indexed: 12/01/2022]
Abstract
In human skin fibroblasts in vitro, procollagen-1 and NAD(+)/NADH were reduced in three strains of adult fibroblasts compared with neonatal fibroblasts. The levels of both procollagen-1 and NAD(+)/NADH were increased in the adult fibroblasts by treatment for 24 (NAD energy) or 48 h (procollagen-1) with a complex containing niacinamide, Pal-KTTKS peptide and an olive oil fatty acid derivative (Olivem(®)), especially in combination with a natural extract from dill (Lys'lastine V(®)). In one of the adult fibroblast strains evaluated, these changes in procollagen-1 and NAD(+)/NADH in response to the complex of bioactives were in parallel with increased expression of mRNA biomarkers related primarily to dermal matrix and basement membrane structure, including COL1A1, COL3A1, COL5A1, COL14A1, ELN and LOXL2, in addition to SOD2, NAMPT and TGFBR3; MMP1 was decreased in expression. In general, these mRNA biomarker effects were maintained or boosted by the addition of Lys'lastine V, particularly at 1%, and were similar to the fold changes in mRNA expression in neonatal compared with adult fibroblasts. These results indicate that the complex of niacinamide, Pal-KTTKS and Olivem, especially with addition of Lys'lastine V, increases the NAD(+)/NADH bioenergy level of adult skin fibroblasts in parallel with increased expression of skin structure biomarkers in vitro to levels similar to those in younger fibroblasts. Thus, niacinamide, Pal-KTTKS, Olivem and Lys'lastine V are promising bioactive candidates for inclusion in cosmetic formulations.
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Affiliation(s)
- R Osborne
- The Procter & Gamble Company, Mason Business Center, 8700 Mason-Montgomery Road, Mason, OH 45040-8006, USA.
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18
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Visscher MO, Pan BS, Kitzmiller WJ. Photodamage: treatments and topicals for facial skin. Facial Plast Surg Clin North Am 2013; 21:61-75. [PMID: 23369590 DOI: 10.1016/j.fsc.2012.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This article provides an overview of current therapies for photodamaged facial skin and their efficacy, with particular focus on studies that use the objective, quantitative evaluation methods discussed in the previous article. The role of topically applied agents including prescription drugs and cosmetics is discussed. From this information, a schema for the relative effectiveness of therapeutic modalities in reducing perceived age is presented. This information assists the facial plastic surgeon in evaluating patient expectations and selecting the most effective program.
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Affiliation(s)
- Marty O Visscher
- Skin Sciences Program, Division of Plastic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
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Kimball A, Grant R, Wang F, Osborne R, Tiesman J. Beyond the blot: cutting edge tools for genomics, proteomics and metabolomics analyses and previous successes. Br J Dermatol 2012; 166 Suppl 2:1-8. [DOI: 10.1111/j.1365-2133.2012.10859.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Osborne R, Hakozaki T, Laughlin T, Finlay D. Application of genomics to breakthroughs in the cosmetic treatment of skin ageing and discoloration. Br J Dermatol 2012; 166 Suppl 2:16-9. [DOI: 10.1111/j.1365-2133.2012.10960.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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