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Chiapparelli E, Burkhard MD, Amoroso K, Guven AE, Camino-Willhuber G, Zhu J, Caffard T, Evangelisti G, Hambrecht J, Köhli P, Tsuchiya K, Shue J, Sama A, Girardi FP, Cammisa FP, Hughes AP. Association between skin ultrasound parameters and revision surgery after posterior spinal fusion. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2024:10.1007/s00586-024-08319-1. [PMID: 38937347 DOI: 10.1007/s00586-024-08319-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 03/11/2024] [Accepted: 05/16/2024] [Indexed: 06/29/2024]
Abstract
PURPOSE The literature is scarce in exploring the role of imaging parameters like ultrasound (US) as a biomarker for surgical outcomes. The purpose of this study is to investigate the associations between skin US parameters and revision surgery following spine lumbar fusion. METHODS Posterior lumbar fusion patients with 2-years follow-up were assessed. Previous fusion or revision not due to adjacent segment disease (ASD) were excluded. Revisions were classified as cases and non-revision were classified as controls. US measurements conducted at two standardized locations on the lumbar back. Skin echogenicity of the average dermal (AD), upper 1/3 of the dermal (UD), lower 1/3 of the dermal (LD), and subcutaneous layer were measured. Echogenicity was calculated with the embedded echogenicity function of our institution's imaging platform (PACS). Statistical significance was set at p < 0.05. RESULTS A total of 128 patients (51% female, age 62 [54-72] years) were included in the final analysis. 17 patients required revision surgery. AD, UD, and LD echogenicity showed significantly higher results among revision cases 124.5 [IQR = 115.75,131.63], 128.5 [IQR = 125,131.63] and 125.5 [IQR = 107.91,136.50] compared to the control group 114.3 [IQR = 98.83,124.8], 118.5 [IQR = 109.28,127.50], 114 [IQR = 94.20,126.75] respectively. CONCLUSION The findings of this study demonstrate a significant association between higher echogenicity values in different layers of the dermis and requiring revision surgery. The results provide insights into the potential use of skin US parameters as predictors for revision surgery. These findings may reflect underlying alterations in collagen. Further research is warranted to elucidate the mechanisms driving these associations.
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Affiliation(s)
- Erika Chiapparelli
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Marco D Burkhard
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Krizia Amoroso
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Ali E Guven
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Gaston Camino-Willhuber
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Jiaqi Zhu
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
- Biostatistics Core, Hospital for Special Surgery, New York City, NY, USA
| | - Thomas Caffard
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
- Klinik für Orthopädie, Universitätsklinikum Ulm, Ulm, Germany
| | - Gisberto Evangelisti
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
- IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Jan Hambrecht
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
- Balgrist University Hospital, Zurich, Switzerland
| | - Paul Köhli
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
- Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Koki Tsuchiya
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
- Department of Orthopaedic Surgery, School of Medicine, Showa University Hospital, Tokyo, Japan
| | - Jennifer Shue
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Andrew Sama
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Federico P Girardi
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Frank P Cammisa
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA
| | - Alexander P Hughes
- Department of Orthopaedic Surgery, Spine Care Institute, Hospital for Special Surgery, Weill Cornell Medicine, 535 East 70th Street, New York City, NY, 10021, USA.
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Nieuwoudt M, Jarrett P, Matthews H, Locke M, Bonesi M, Burnett B, Holtkamp H, Aguergaray C, Mautner I, Minnee T, Simpson MC. Portable System for In-Clinic Differentiation of Skin Cancers from Benign Skin Lesions and Inflammatory Dermatoses. JID INNOVATIONS 2024; 4:100238. [PMID: 38274304 PMCID: PMC10808988 DOI: 10.1016/j.xjidi.2023.100238] [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] [Received: 02/05/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 01/27/2024] Open
Abstract
The exquisite sensitivity of Raman spectroscopy for detecting biomolecular changes in skin cancer has previously been explored; however, this mostly required analysis of excised tissue samples using bulky, immobile laboratory instrumentation. In this study, the technique was translated for clinical use with a portable Raman system and customized fiber optic probe and applied to differentiation of skin cancers from benign lesions and inflammatory dermatoses. The aim was to provide an easy-to-use, easy-to-manage assessment tool for clinicians to use in their daily patient examination routine to perform rapid Raman measurements of skin lesions in vivo. Using this system, >867 spectra were measured in vivo from 330 patients with a wide variety of different benign skin lesions (n = 603), inflammatory dermatoses (n = 140), and skin cancers (n = 124). Ethnicities represented were 70% European; 16% Asian; 6% Māori; 5% Pacific people; and 4% Middle East, Latin American, and African. Accurate differentiation of skin cancers from benign lesions and inflammatory dermatoses was achieved using partial least squares discriminant analysis, with area under curve for the receiver operator curves for external validation sets ranging from 0.916 to 0.958. This study shows evidence for robust clinical translation of Raman spectroscopy for rapid, accurate diagnosis of skin cancer.
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Affiliation(s)
- Michel Nieuwoudt
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
| | - Paul Jarrett
- Department of Dermatology, Middlemore Hospital, Auckland, New Zealand
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Hannah Matthews
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
| | - Michelle Locke
- Department of Plastic Surgery, Middlemore Hospital, Auckland, New Zealand
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - Marco Bonesi
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
- Department of Physics, University of Auckland, Auckland, New Zealand
| | - Brydon Burnett
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- The Photon Factory, University of Auckland, Auckland, New Zealand
| | - Hannah Holtkamp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
| | - Claude Aguergaray
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
- Department of Physics, University of Auckland, Auckland, New Zealand
| | - Ira Mautner
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
- Department of Physics, University of Auckland, Auckland, New Zealand
| | - Thom Minnee
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
| | - M. Cather Simpson
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
- The Photon Factory, University of Auckland, Auckland, New Zealand
- The Dodd Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington, New Zealand
- Department of Physics, University of Auckland, Auckland, New Zealand
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Amiri M, Meçani R, Niehot CD, Phillips T, Kolb J, Daughtry H, Muka T. Skin regeneration-related mechanisms of Calcium Hydroxylapatite (CaHA): a systematic review. Front Med (Lausanne) 2023; 10:1195934. [PMID: 37332763 PMCID: PMC10273839 DOI: 10.3389/fmed.2023.1195934] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/08/2023] [Indexed: 06/20/2023] Open
Abstract
Introduction Calcium Hydroxylapatite (CaHA) is a common dermal filler used in aesthetic medicine for volumizing and contouring. Understanding mechanisms of actions of CaHA can help improve our understanding of its clinical applications. Methods We performed a systematic review to summarize the skin-regeneration related mechanisms of CaHA. Five bibliographic databases were searched for English-language publications that evaluated CaHA in skin regeneration outcomes including neocollagenesis, cell proliferation and growth factors, angiogenesis, vascular dynamic and inflammatory markers, among others. Methodological rigor of included studies was assessed. Results Of 2,935 identified citations, 12 studies were included for final analysis. Collagen production was reported by nine studies, cell proliferation by four, elastic fibers and/or elastin by four, and three studies on angiogenesis, while limited studies were available on the other outcomes. Six were clinical/observational studies. Only seven studies had a control group. Overall, studies showed CaHA resulted in increased cell proliferation, increased collagen production and angiogenesis, as well as in higher elastic fiber and elastin formation. Limited and inconclusive evidence was available on the other mechanisms. The majority of the studies had methodological limitations. Discussion Current evidence is limited but indicates several mechanisms through which CaHA could lead to skin regeneration, volume enhancement, and contouring. Systematic review registration https://doi.org/10.17605/OSF.IO/WY49V.
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Affiliation(s)
- Mojgan Amiri
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, Netherlands
- Epistudia, Bern, Switzerland
| | - Renald Meçani
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | | | | | | | - Hua Daughtry
- Merz North America, Inc., Raleigh, NC, United States
| | - Taulant Muka
- Epistudia, Bern, Switzerland
- Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland
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Shin SH, Lee YH, Rho NK, Park KY. Skin aging from mechanisms to interventions: focusing on dermal aging. Front Physiol 2023; 14:1195272. [PMID: 37234413 PMCID: PMC10206231 DOI: 10.3389/fphys.2023.1195272] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Skin aging is a multifaceted process that involves intrinsic and extrinsic mechanisms that lead to various structural and physiological changes in the skin. Intrinsic aging is associated with programmed aging and cellular senescence, which are caused by endogenous oxidative stress and cellular damage. Extrinsic aging is the result of environmental factors, such as ultraviolet (UV) radiation and pollution, and leads to the production of reactive oxygen species, ultimately causing DNA damage and cellular dysfunction. In aged skin, senescent cells accumulate and contribute to the degradation of the extracellular matrix, which further contributes to the aging process. To combat the symptoms of aging, various topical agents and clinical procedures such as chemical peels, injectables, and energy-based devices have been developed. These procedures address different symptoms of aging, but to devise an effective anti-aging treatment protocol, it is essential to thoroughly understand the mechanisms of skin aging. This review provides an overview of the mechanisms of skin aging and their significance in the development of anti-aging treatments.
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Affiliation(s)
- Sun Hye Shin
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Yoon Hwan Lee
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Nark-Kyoung Rho
- Leaders Aesthetic Laser & Cosmetic Surgery Center, Seoul, Republic of Korea
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Haffer H, Chiapparelli E, Moser M, Muellner M, Dodo Y, Adl Amini D, Zhu J, Miller TT, Han YX, Donnelly E, Shue J, Sama AA, Cammisa FP, Girardi FP, Hughes AP. Dermal ultrasound measurements for bone quality assessment : An investigation of advanced glycation endproducts derived from confocal fluorescence microscopy. J Orthop Res 2023; 41:345-354. [PMID: 35470915 PMCID: PMC9596615 DOI: 10.1002/jor.25350] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 02/04/2023]
Abstract
Bone quality is increasingly being recognized in the assessment of fracture risk. Nonenzymatic collagen cross-linking with the accumulation of advanced glycation end products stiffens and embrittles collagen fibers thus increasing bone fragility. Echogenicity is an ultrasound (US) parameter that provides information regarding the skin collagen structure. We hypothesized that both skin and bone collagen degrade in parallel fashion. Prospectively collected data of 110 patients undergoing posterior lumbar fusion was analyzed. Preoperative skin US measurements were performed in the lumbar region to assess dermal thickness and echogenicity. Intraoperative bone biopsies from the posterior superior iliac spine were obtained and analyzed with confocal fluorescence microscopy for fluorescent advanced glycation endproducts (fAGEs). Pearson's correlation was calculated to examine relationships between (1) US and fAGEs, and (2) age and fAGEs stratified by sex. Multivariable linear regression analysis with adjustments for age, sex, body mass index (BMI), diabetes mellitus, and hemoglobin A1c (HbA1c) was used to investigate associations between US and fAGEs. One hundred and ten patients (51.9% female, 61.6 years, BMI 29.8 kg/m2 ) were included in the analysis. In the univariate analysis cortical and trabecular fAGEs decreased with age, but only in women (cortical: r = -0.32, p = 0.031; trabecular: r = -0.32; p = 0.031). After adjusting for age, sex, BMI, diabetes mellitus, and HbA1c, lower dermal (β = 1.01; p = 0.012) and subcutaneous (β = 1.01; p = 0.021) echogenicity increased with increasing cortical fAGEs and lower dermal echogenicity increased with increasing trabecular fAGEs (β = 1.01; p = 0.021). This is the first study demonstrating significant associations between skin US measurements and in vivo bone quality parameters in lumbar fusion patients. As a noninvasive assessment tool, skin US measurements might be incorporated into future practice to investigate bone quality in spine surgery patients.
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Affiliation(s)
- Henryk Haffer
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
- Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Erika Chiapparelli
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Manuel Moser
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
- Department of Spine Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Maximilian Muellner
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
- Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Yusuke Dodo
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Dominik Adl Amini
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
- Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jiaqi Zhu
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Theodore T. Miller
- Department of Radiology and Imaging, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Yi Xin Han
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - Eve Donnelly
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
- Musculoskeletal Integrity Program, Research Institute, Hospital for Special Surgery, New York City, NY, USA
| | - Jennifer Shue
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Andrew A. Sama
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Frank P. Cammisa
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Federico P. Girardi
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
| | - Alexander P. Hughes
- Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY, USA
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Song B, Yin X, Fan Y, Zhao Y. Quantitative spatial mapping of tissue water and lipid content using spatial frequency domain imaging in the 900- to 1000-nm wavelength region. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:JBO-220120GRR. [PMID: 36303279 PMCID: PMC9612091 DOI: 10.1117/1.jbo.27.10.105005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Significance Water and lipid are key participants of many biological processes, but there are few label-free, non-contact optical methods that can spatially map these components in-vivo. Shortwave infrared meso-patterned imaging (SWIR-MPI) is an emerging technique that successfully addresses this need. However, it requires a dedicated SWIR camera to probe the 900- to 1300-nm wavelength region, which hinders practical translation of the technology. Aim Compared with SWIR-MPI, we aim to develop a new technique that can dramatically reduce the cost in detector while maintaining high accuracy for the quantification of tissue water and lipid content. Approach By utilizing water and lipid absorption features in the 900- to 1000-nm wavelength region as well as optimal wavelength and spatial frequency combinations, we develop a new imaging technique based on spatial frequency domain imaging to quantitatively map tissue water and lipid content using a regular silicon-based camera. Results The proposed method is validated with a phantom study, which shows average error of 0.9 ± 1.2 % for water content estimation, and -0.4 ± 0.7 % for lipid content estimation, respectively. The proposed method is also demonstrated for ex vivo porcine tissue lipid mapping as well as in-vivo longitudinal water content monitoring. Conclusions The proposed technique enables spatial mapping of tissue water and lipid content with the cost in detector reduced by two orders of magnitude compared with SWIR-MPI while maintaining high accuracy. The experimental results highlight the potential of this technique for substantial impact in both scientific and industrial applications.
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Affiliation(s)
- Bowen Song
- Beihang University, School of Engineering Medicine, Beijing Advanced Innovation Center for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing, China
| | - Xinman Yin
- Beihang University, School of Engineering Medicine, Beijing Advanced Innovation Center for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing, China
| | - Yubo Fan
- Beihang University, School of Engineering Medicine, Beijing Advanced Innovation Center for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing, China
| | - Yanyu Zhao
- Beihang University, School of Engineering Medicine, Beijing Advanced Innovation Center for Biomedical Engineering, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing, China
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Mayrovitz HN. Circumferential and Depth Variations in Tissue Dielectric Constant Values as Indices of Lower Leg Localized Skin Water. Cureus 2022; 14:e27617. [PMID: 36059342 PMCID: PMC9433792 DOI: 10.7759/cureus.27617] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 08/02/2022] [Indexed: 11/19/2022] Open
Abstract
The primary goal of this study was to quantify circumferential (medial, anterior, lateral) and measurement depth variations (0.5 mm, 1.5 mm, 2.5 mm) in tissue dielectric constant (TDC) values as an aid to their use to assess the presence and progression of lower extremity edema and lymphedema. Measurements were done in 30 healthy non-edematous women to provide reference data to estimate expected values and thresholds when evaluating clinical edematous or lymphedematous conditions. A second goal was to determine the extent to which TDC values evaluated at lower leg sites depend on body mass index (BMI). The study protocol (#12180901) was approved by the university’s institutional review board and subjects were evaluated after signing an approved informed consent. The study group had an age range of 19-54 years with a mean age and SD of 30.6 ± 10.1 years and had a BMI between 18.1-44.1 Kg/m2 with a mean BMI and SD of 24.5 ± 5.4 Kg/m2. The main findings show that at the three circumferential sites (medial, anterior, and lateral) located eight cm from the mid-malleolus, there are small but statistically significant differences in TDC values at every measurement depth (0.5 mm, 1.5 mm and 2.5 mm). For each depth, the maximum difference occurs between the medial and lateral locations with lateral locations having a greater TDC value at all depths. Despite the wide range of BMI values of the subjects evaluated, no significant relationship between TDC value and BMI was detected. It is concluded that TDC measurements in the lower leg reveal statistically significant differences among circumferential sites and measurement depths that should be considered when evaluating or tracking lower extremity tissue water changes associated with edema, lymphedema or other conditions related to skin water. The absolute values of these non-edematous TDC values herein determined may provide a basis for calculating TDC thresholds applicable to edematous or lymphedematous lower leg conditions.
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Park S. Biochemical, structural and physical changes in aging human skin, and their relationship. Biogerontology 2022; 23:275-288. [PMID: 35292918 DOI: 10.1007/s10522-022-09959-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 02/25/2022] [Indexed: 11/02/2022]
Abstract
Skin is the largest organ of the human body, having the purpose of regulating temperature, protecting us from microbes or mechanical shocks, and allowing the sensations from touch. It is generally accepted that aging induces profound changes in the skin's biochemical, structural and physical properties, which can lead to impaired biological functions and/or diverse diseases. So far, the effects of aging on these skin properties have been well documented. However, very few studies have focused exclusively on the relationship among these critical properties in the aging process, which is this review's primary focus. Many in vivo, ex vivo, and in vitro techniques have been previously used to characterize these properties of the skin. This review aims to provide a comprehensive overview on the effects of aging on the changes in biochemical, structural, and physical properties, and explore the potential mechanisms of skin with the relation between these properties. First, we review different or contradictory results of aging-related changes in representative parameters of each property, including the interpretations of the findings. Next, we discuss the need for a standardized method to characterize aging-related changes in these properties, to improve the way of defining age-property relationship. Moreover, potential mechanisms based on the previous results are explored by linking the biochemical, structural, and physical properties. Finally, the need to study changes of various functional properties in the separate skin layers is addressed. This review can help understand the underlying mechanism of aging-related alterations, to improve the evaluation of the aging process and guide effective treatment strategies for aging-related diseases.
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Affiliation(s)
- Seungman Park
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA. .,Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
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9
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Chavoshnejad P, Foroughi AH, Dhandapani N, German GK, Razavi MJ. Effect of collagen degradation on the mechanical behavior and wrinkling of skin. Phys Rev E 2021; 104:034406. [PMID: 34654184 DOI: 10.1103/physreve.104.034406] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 08/27/2021] [Indexed: 11/07/2022]
Abstract
Chronological skin aging is a complex process that is controlled by numerous intrinsic and extrinsic factors. One major factor is the gradual degradation of the dermal collagen fiber network. As a step toward understanding the mechanistic importance of dermal tissue in the process of aging, this study employs analytical and multiscale computational models to elucidate the effect of collagen fiber bundle disintegration on the mechanical properties and topography of skin. Here, human skin is modeled as a soft composite with an anisotropic dermal layer. The anisotropy of the tissue is governed by collagen fiber bundles with varying densities, average fiber alignments, and normalized alignment distributions. In all finite element models examined, collagen fiber bundle degradation results in progressive decreases in dermal and full-thickness composite stiffness. This reduction is more profound when collagen bundles align with the compression axis. Aged skin models with low collagen fiber bundle densities under compression exhibit notably smaller critical wrinkling strains and larger critical wavelengths than younger skin models, in agreement with in vivo wrinkling behavior with age. The propensity for skin wrinkling can be directly attributable to the degradation of collagen fiber bundles, a relationship that has previously been assumed but unsubstantiated. While linear-elastic analytical models fail to capture the postbuckling behavior in skin, nonlinear finite element models can predict the complex bifurcations of the compressed skin with different densities of collagen bundles.
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Affiliation(s)
- Poorya Chavoshnejad
- Department of Mechanical Engineering, Binghamton University, State University of New York, New York 13902, USA
| | - Ali H Foroughi
- Department of Mechanical Engineering, Binghamton University, State University of New York, New York 13902, USA
| | - Niranjana Dhandapani
- Department of Biomedical Engineering, Binghamton University, State University of New York, Binghamton, New York 13902, USA
| | - Guy K German
- Department of Biomedical Engineering, Binghamton University, State University of New York, Binghamton, New York 13902, USA.,Department of Pharmaceutical Sciences, Binghamton University, State University of New York, Binghamton, New York 13902, USA
| | - Mir Jalil Razavi
- Department of Mechanical Engineering, Binghamton University, State University of New York, New York 13902, USA
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Rigal A, Michael-Jubeli R, Nkengne A, Baillet-Guffroy A, Bigouret A, Tfayli A. Raman confocal microscopy and biophysics multiparametric characterization of the skin barrier evolution with age. JOURNAL OF BIOPHOTONICS 2021; 14:e202100107. [PMID: 34105894 DOI: 10.1002/jbio.202100107] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
Skin aging is a multifactorial phenomenon that involves alterations at the molecular, cellular and tissue levels. Our aim was to carry out a multiparametric biophysical and Raman characterization of skin barrier between individuals of different age groups (<24 and >70 years old). Our results showed a significant decrease of lipids to proteins ratio overall the thickness of the stratum corneum and higher lateral packing in the outer part of the SC for elderly. This can explain the decrease in trans epidermal water loss measured values rather than only SC thickening. Both age groups showed similar water content at SC surface while elderly presented higher water content in deep SC and viable epidermis. Mechanical measurements showed a decrease in the elasticity and an increase in the fatigability with age and were correlated with partially bound water. Highest correlation and anti-correlation values were observed for the deepest part of the SC and the viable epidermis.
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Affiliation(s)
- Aline Rigal
- Lipides: Systèmes Analytiques et Biologiques Lip(Sys)2 Interdisciplinary Unit, Faculty of Pharmacy, University Paris-Saclay, Châtenay-Malabry, France
| | - Rime Michael-Jubeli
- Lipides: Systèmes Analytiques et Biologiques Lip(Sys)2 Interdisciplinary Unit, Faculty of Pharmacy, University Paris-Saclay, Châtenay-Malabry, France
| | - Alex Nkengne
- Clarins Laboratories, LEC : Laboratoire d'Evaluation Clinique, Pontoise, France
| | - Arlette Baillet-Guffroy
- Lipides: Systèmes Analytiques et Biologiques Lip(Sys)2 Interdisciplinary Unit, Faculty of Pharmacy, University Paris-Saclay, Châtenay-Malabry, France
| | - Armelle Bigouret
- Clarins Laboratories, LEC : Laboratoire d'Evaluation Clinique, Pontoise, France
| | - Ali Tfayli
- Lipides: Systèmes Analytiques et Biologiques Lip(Sys)2 Interdisciplinary Unit, Faculty of Pharmacy, University Paris-Saclay, Châtenay-Malabry, France
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11
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Štefík P, Annušová A, Lakatoš B, Elefantová K, Čepcová L, Hofbauerová M, Kálosi A, Jergel M, Majková E, Šiffalovič P. Targeting acute myeloid leukemia cells by CD33 receptor-specific MoS 2-based nanoconjugates. Biomed Mater 2021; 16. [PMID: 34280914 DOI: 10.1088/1748-605x/ac15b1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 07/19/2021] [Indexed: 11/12/2022]
Abstract
Acute myeloid leukemia (AML) is a highly aggressive type of cancer caused by the uncontrolled proliferation of undifferentiated myeloblasts, affecting the bone marrow and blood. Systemic chemotherapy is considered the primary treatment strategy; unfortunately, healthy cells are also affected to a large extent, leading to severe side effects of this treatment. Targeted drug therapies are becoming increasingly popular in modern medicine, as they bypass normal tissues and cells. Two-dimensional MoS2-based nanomaterials have attracted attention in the biomedical field as promising agents for cancer diagnosis and therapy. Cancer cells typically (over)express distinctive cytoplasmic membrane-anchored or -spanning protein-based structures (e.g., receptors, enzymes) that distinguish them from healthy, non-cancerous cells. Targeting cancer cells via tumor-specific markers using MoS2-based nanocarriers loaded with labels or drugs can significantly improve specificity and reduce side effects of such treatment. SKM-1 is an established AML cell line that has been employed in various bio-research applications. However, to date, it has not been used as the subject of studies on selective cancer targeting by inorganic nanomaterials. Here, we demonstrate an efficient targeting of AML cells using MoS2nanoflakes prepared by a facile exfoliation route and functionalized with anti-CD33 antibody that binds to CD33 receptors expressed by SKM-1 cells. Microscopic analyses by confocal laser scanning microscopy supplemented by label-free confocal Raman microscopy proved that (anti-CD33)-MoS2conjugates were present on the cell surface and within SKM-1 cells, presumably having been internalized via CD33-mediated endocytosis. Furthermore, the cellular uptake of SKM-1 specific (anti-CD33)-MoS2conjugates assessed by flow cytometry analysis was significantly higher compared with the cellular uptake of SKM-1 nonspecific (anti-GPC3)-MoS2conjugates. Our results indicate the importance of appropriate functionalization of MoS2nanomaterials by tumor-recognizing elements that significantly increase their specificity and hence suggest the utilization of MoS2-based nanomaterials in the diagnosis and therapy of AML.
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Affiliation(s)
- Pavol Štefík
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia
| | - Adriana Annušová
- Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia.,Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia
| | - Boris Lakatoš
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia
| | - Katarína Elefantová
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia
| | - Lucia Čepcová
- Institute of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia
| | - Monika Hofbauerová
- Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia
| | - Anna Kálosi
- Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia
| | - Matej Jergel
- Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia.,Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia
| | - Eva Majková
- Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia.,Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia
| | - Peter Šiffalovič
- Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia.,Centre for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 84511 Bratislava, Slovakia
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12
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Rescigno F, Ceriotti L, Meloni M. Extra Cellular Matrix Deposition and Assembly in Dermis Spheroids. Clin Cosmet Investig Dermatol 2021; 14:935-943. [PMID: 34321901 PMCID: PMC8312327 DOI: 10.2147/ccid.s316707] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/22/2021] [Indexed: 11/23/2022]
Abstract
Objective Dermis spheroids from different donors (40 and 50 years old) were developed from primary fibroblasts to demonstrate their capacity to synthetize and organize the main dermal structural components when cultured in 3D microenvironment, forming endogenous de novo ECM according to their potential metabolic activity. Methods Dermis spheroids were produced from primary human dermal fibroblasts at early passages in hanging drop culture system. Dermis models were characterized in terms of spheroid diameter, PICP release, collagen III and CD44 expression. Results An increase of collagen III synthesis (101%) was found in the young donor compared to the old donor (23.5%) after seven days of culture by immunofluorescence. The progressive ECM assembly over the time and dermis maturation was showed by Masson’s trichrome staining and by immunofluorescence for collagen III and CD44; both molecules significantly accumulated in the dermal compartment from day seven to day 10 of culture with a global decrease for both spheroid models after 21 days of culture. Conclusion Our results showed that specific culture conditions in the 3D scaffold-free microenvironment allowed the physiological and progressive ECM assembly of miniaturized dermis models reflecting phenotypic profile features of “young” and “old” native tissue from which cells were isolated with a potential application to personalized care approaches in dermatological research on aging processes and medicine.
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Affiliation(s)
| | | | - Marisa Meloni
- VitroScreen, In Vitro Innovation Center, Milan, Italy
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13
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Sadowski T, Bielfeldt S, Wilhelm KP, Sukopp S, Gordon C. Objective and subjective reduction of cellulite volume using a localized vibrational massage device in a 24-week randomized intra-individual single-blind regression study. Int J Cosmet Sci 2021; 42:277-288. [PMID: 32181499 PMCID: PMC7317706 DOI: 10.1111/ics.12613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/02/2020] [Indexed: 12/13/2022]
Abstract
Cellulite occurs in females and is a common condition of altered connective tissue matrix and increased adipogenicity with visible dimples and orange‐peel appearance on the skins surface. Whilst advancements in methods continue to help our understanding, attempts to correct the appearance of cellulite topically have yielded limited success. Various kinds of non‐invasive body contouring methods such as whole body vibration have been reported with demonstrable visible improvements in the cellulite condition. The aim of this study was to evaluate volume reduction and improvement of the visible appearance of cellulite as judged both objectively (AEVA‐HE phase‐shift 3‐D fringe projection, macrophotography image grading) and subjectively (questionnaires) after application of a hand‐held localized vibrational device over 24‐weeks. The study was conducted on 40 healthy female volunteers who were instructed how to use the device on defined areas of cellulite of the outside and rear of the thighs (iliotibial band, and over biceps femoris region respectively). The initial 12 weeks of continuous massage application of the study were followed by a 12 week phase in which volunteers were split into 2 subgroups – one for assessment of regression effects and one for continuous application effects. AEVA (skin surface volume) measurements of cellulite‐related dimples correlated with questionnaires and visual image evaluation scoring, in that in the iliotibial region cellulite was significantly reduced at 12 weeks. In the regression subgroup cellulite returned to initial values soon after cessation of treatment, whereas in the continuous application subgroup, cellulite remained diminished. The effect of this device to reduce cellulite as observed in this study proves that continuous use of vibrational massage is beneficial to mitigate visible signs of cellulite.
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Affiliation(s)
- T Sadowski
- proDERM Institute of Applied Dermatological Research GmbH, 22869, Schenefeld-Hamburg, Germany
| | - S Bielfeldt
- proDERM Institute of Applied Dermatological Research GmbH, 22869, Schenefeld-Hamburg, Germany
| | - K-P Wilhelm
- proDERM Institute of Applied Dermatological Research GmbH, 22869, Schenefeld-Hamburg, Germany
| | - S Sukopp
- Beurer GmbH, 89077, Ulm-Donau, Germany
| | - C Gordon
- CIT Research Institute, Ahornstr. 31, 70597, Stuttgart, Germany
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14
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Misiakiewicz-Has K, Zawiślak A, Pilutin A, Kolasa-Wołosiuk A, Szumilas P, Duchnik E, Wiszniewska B. Morphological and Functional Changes in Skin of Adult Male Rats Chronically Treated with Letrozole, a Nonsteroidal Inhibitor of Cytochrome P450 Aromatase. Acta Histochem Cytochem 2020; 53:99-111. [PMID: 33177782 PMCID: PMC7642481 DOI: 10.1267/ahc.20009] [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: 03/13/2020] [Accepted: 07/08/2020] [Indexed: 11/22/2022] Open
Abstract
Skin is a target for hormones and a site of hormone production. Aromatase inhibitors such as letrozole reduce circulating estrogen. The aim of the study was to investigate the morphology of the dermis and immunoexpression of androgen receptor (AR), estrogen receptor α and β (ERα, ERβ), luteinizing hormone receptor (LHR), follicle-stimulating hormone receptor (FSHR), and cytochrome P450 aromatase (P450arom) in male rats with a deficit of estradiol. Experiments were performed on skin of 12 male rats. Rats in the experimental group received per os letrozole for 6 months. For morphological analysis, van Gieson, Sirius Red and orcein staining of sections was performed. In immunohistochemistry, reactions with specific antibodies (anti-P450arom, LHR, FSHR, ERα, ERβ) were used. In morphometric analysis, sections were stained with hematoxylin and eosin. Differences between groups were assessed by Mann-Whitney U-test. There were no differences in the diameter of collagen fibers. The dermis of letrozole-treated animals showed areas without collagen fibers, and expression of P450arom, ERα and ERβ was diminished in the skin of these animals. This study indicates that estrogens exert an effect via ERs that has a role in maintaining proper skin morphology in males, together with androgen. This is also the first documented expression of FSHR in the skin of male rats.
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Affiliation(s)
| | - Alicja Zawiślak
- Department of Interdisciplinary Dentistry, Pomeranian Medical University in Szczecin
| | - Anna Pilutin
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin
| | | | - Paweł Szumilas
- Department of Social Medicine and Public Health, Pomeranian Medical University in Szczecin
| | - Ewa Duchnik
- Department of Dermatology and Venereology, Pomeranian Medical University in Szczecin
| | - Barbara Wiszniewska
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin
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15
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Kourbaj G, Bielfeldt S, Seise M, Wilhelm KP. Measurement of dermal water content by confocal RAMAN spectroscopy to investigate intrinsic aging and photoaging of human skin in vivo. Skin Res Technol 2020; 27:404-413. [PMID: 33098353 DOI: 10.1111/srt.12948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/05/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND In vivo confocal Raman spectroscopy (CRS) revealed a clear correlation of age and dermal water content, indicating increasing water content of the dermis with increasing age. This enhancement of water has been interpreted as an age-dependent depletion, of proteins, mainly of collagen. Chronical sun exposure is known to destroy the collagen network of the skin, which leads to the signs of photoaging as the formation of wrinkles. Noninvasive in vivo measuring techniques for photoaging are limited. Therefore, sensitive techniques to quantify even mild degrees of photoaging in a clinical setting are of high interest. We used CRS to measure the water content in human dermis in vivo, assuming that additionally to the increase of water content in intrinsic aging, photoaging would lead to further collagen depletion and an additional increase in water content of the dermis. MATERIALS AND METHODS A panel of 24 female subjects of different age-groups and scores of photoaging was recruited. A ranking of high resolution dorsal forearm photographs was used to classify the degree of photoaging with high precision. After that, CRS water content and collagen measurements were performed in the photoexposed dorsal as well as the photoprotected volar dermis of the subjects. RESULTS A positive correlation of water content in the dermis with age could be confirmed (r = .550). Further, a positive correlation between water content of dorsal dermis and photoaging ranks was observed (Pearson's r = .417). CONCLUSION Assessment of water content in the dermis with confocal Raman spectroscopy was found to be a promising method to measure the degree of photoaging in human subjects in vivo.
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Affiliation(s)
- Ghaith Kourbaj
- proDERM Institute of Applied Dermatological Research GmbH, Hamburg, Germany
| | - Stephan Bielfeldt
- proDERM Institute of Applied Dermatological Research GmbH, Hamburg, Germany
| | - Matthias Seise
- proDERM Institute of Applied Dermatological Research GmbH, Hamburg, Germany
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16
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Nkengne A, Robic J, Lua BL. Self-perceived and objective measurements of facial puffiness in Chinese women. Skin Res Technol 2020; 27:385-392. [PMID: 33089925 DOI: 10.1111/srt.12955] [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: 05/10/2020] [Revised: 07/23/2020] [Accepted: 09/07/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Facial puffiness, caused by mild or normal fluid retention, commonly experienced by women, may not pose a health risk, but it can be a cause of cosmetic concern. The objectives of this study were to determine whether self-perceived facial puffiness can be measured objectively. MATERIALS AND METHODS A total of 151 Chinese women between 20 and 68 years of age were recruited. Facial water content, skin thickness, and elasticity were measured at two time points within a day (visit one occurred when the participants perceived they had facial puffiness; visit two occurred when the participants perceived their facial puffiness had subsided). Participants were also given a rating scale to self-evaluate their puffiness and firmness at different regions of the face. RESULTS The participants could perceive a difference in facial puffiness between the two visits. Water content and skin thickness were significantly higher in all regions of the face for all participants during the first visit. Skin elasticity was also significantly different between visits one and two. There was a significant increase in water content and skin thickness in the lower eyelid region in women who were older than 40 years. CONCLUSION This is the first study to show that self-perceived facial puffiness can be measured objectively and that skin elasticity can change significantly when facial puffiness subsides.
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17
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Monteiro E Silva SA, Souza JGD, Melo PS, Moreno IAM, Alencar SM, Lopez RFV, Ricci Leonardi G. Target action of antioxidants using iontophoresis. J Cosmet Dermatol 2020; 20:664-676. [PMID: 32573989 DOI: 10.1111/jocd.13560] [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: 05/01/2020] [Accepted: 06/10/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND The use of antioxidants in applications for topical use seems promising, however, many studies must be performed to ensure processes and products that can effectively bring benefits to combat the action of free radicals in the skin. For topical antioxidants to be effective against free radicals from the skin, it is essential that the antioxidants compounds permeate the different skin layers, to reach deeper layers of the epidermis in active form and stay there for a sufficient time to cause the beneficial effects. AIM This work aimed to evaluate the antioxidant action of formulations with phenolic compounds as well as to comprehend the skin retention profile of these actives. METHODS The antioxidant potential was recognized with isolated phenolic acids (gallic, caffeic, and ferulic acid) or in combinations, using different in vitro methods (DPPH ABTS , FRAP , β-carotene/linoleic acid system and ORAC). The skin retention study was performed through in vitro assay with Franz's diffusion cell associating, or not, the cathodic iontophoresis. RESULTS Gallic acid showed the greatest antioxidant activity and was selected for a study of skin permeation following gel application to porcine skin, with or without cathodic iontophoresis. Gallic acid retention in deeper skin layers was promoted by iontophoresis, and increased skin antioxidant activity was detected after only 20 min of iontophoresis. The present study demonstrated the importance of polymeric gelling agents for optimizing the antioxidant activity. CONCLUSION The cathodic iontophoresis represents a promising strategy to promote a target action of antioxidants in the skin.
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Affiliation(s)
| | | | - Priscilla Siqueira Melo
- Biochemistry Department, Luiz de Queiroz College of Agriculture, University of São Paulo - USP, Piracicaba, Brazil
| | | | - Severino Matias Alencar
- Biochemistry Department, Luiz de Queiroz College of Agriculture, University of São Paulo - USP, Piracicaba, Brazil
| | | | - Gislaine Ricci Leonardi
- Medicine Department, Federal University of São Paulo, São Paulo, Brazil.,Faculty of Pharmaceutical Science, State University of Campinas, UNICAMP, Campinas, Brazil
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18
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Das G, Paramithiotis S, Sundaram Sivamaruthi B, Wijaya CH, Suharta S, Sanlier N, Shin HS, Patra JK. Traditional fermented foods with anti-aging effect: A concentric review. Food Res Int 2020; 134:109269. [PMID: 32517898 DOI: 10.1016/j.foodres.2020.109269] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 04/08/2020] [Accepted: 04/20/2020] [Indexed: 12/22/2022]
Abstract
Fermentation has been applied since antiquity as a way to preserve foodstuff or as a necessary step in the production of a variety of products. The research was initially focused on accurate description of production procedure and identification of parameters that may affect the composition and dynamics of the developing micro-communities, since the major aim was standardization and commercial exploitation of the products. Soon it was realized that consumption of these products was associated with an array of health benefits, such as anti-hypertensive, anti-inflammatory, anti-diabetic, anti-carcinogenic and anti-allergenic activities. These were credited to the microorganisms present in the fermented products as well as their metabolic activities and the bio-transformations that took place during the fermentation process. Aging has been defined as a gradual decline in the physiological function and concomitantly homeostasis, which is experienced by all living beings over time, leading inevitably to age-associated injuries, diseases, and finally death. Research has focused on effective strategies to delay this process and thus increase both lifespan and well-being. Fermented food products seem to be a promising alternative due to the immunomodulatory effect of microorganisms and elevated amounts of bioactive compounds. Indeed, a series of anti-aging related benefits have been reported, some of which have been attributed to specific compounds such as genistein and daidzein in soybeans, while others are yet to be discovered. The present article aims to collect and critically discuss all available literature regarding the anti-aging properties of fermented food products.
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Affiliation(s)
- Gitishree Das
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Goyangsi, South Korea
| | - Spiros Paramithiotis
- Department of Food Science and Human Nutrition, Agricultural University of Athens, Athens, Greece
| | - Bhagavathi Sundaram Sivamaruthi
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
| | - Christofora Hanny Wijaya
- Department of Food Science and Technology, Faculty of Agricultural Engineering and Technology, Bogor Agricultural University, Bogor, Indonesia
| | - Sigit Suharta
- Department of Food Science and Technology, Faculty of Agricultural Engineering and Technology, Bogor Agricultural University, Bogor, Indonesia
| | - Nevin Sanlier
- Ankara Medipol University, School of Health Science, Department of Nutrition and Dietetics, Ankara, Turkey
| | - Han-Seung Shin
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Goyang, South Korea
| | - Jayanta Kumar Patra
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Goyangsi, South Korea.
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19
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Ishigaki M, Yasui Y, Kajita M, Ozaki Y. Assessment of Embryonic Bioactivity through Changes in the Water Structure Using Near-Infrared Spectroscopy and Imaging. Anal Chem 2020; 92:8133-8141. [PMID: 32407102 DOI: 10.1021/acs.analchem.0c00076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We explored the influence of embryonic bioactivity on the water structure using near-infrared (NIR) spectroscopy and imaging. Four groups of Japanese medaka fish (Oryzias latipes) eggs were studied: (a) one group of eggs was activated by fertilization, and (b-d) three groups of eggs were not activated because embryogenesis was stopped or not started by (b) culturing under cold temperature, (c) instant freezing, or (d) lack of fertilization. The yolks of the activated eggs contained higher proportions of weakly hydrogen bonded water than those of nonactivated eggs. A possible factor responsible for the significant changes in the water structure was revealed to be a protein secondary structural change from an α-helix to a β-sheet in the activated eggs. NIR images of the activated eggs successfully visualized the water structural variation in the yolk with a higher proportion of weak hydrogen bonds due to the activation of embryonic development. The embryogenic activity could be assessed through the water hydrogen bond network, which is affected by newly generated proteins with different secondary structures.
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Affiliation(s)
- Mika Ishigaki
- Raman Project Center for Medical and Biological Applications, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.,Faculty of Life and Environmental Sciences, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan
| | - Yui Yasui
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Misato Kajita
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Yukihiro Ozaki
- School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
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20
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Phipps KR, Lee HY, Kim H, Jeon B. Oral administration of a novel hydrolyzed chicken sternal cartilage extract (BioCell Collagen®) reduces UVB-induced photoaging in mice. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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21
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Liendl L, Grillari J, Schosserer M. Raman fingerprints as promising markers of cellular senescence and aging. GeroScience 2020; 42:377-387. [PMID: 30715693 PMCID: PMC7205846 DOI: 10.1007/s11357-019-00053-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 01/17/2019] [Indexed: 12/15/2022] Open
Abstract
Due to our aging population, understanding of the underlying molecular mechanisms constantly gains more and more importance. Senescent cells, defined by being irreversibly growth arrested and associated with a specific gene expression and secretory pattern, accumulate with age and thus contribute to several age-related diseases. However, their specific detection, especially in vivo, is still a major challenge. Raman microspectroscopy is able to record biochemical fingerprints of cells and tissues, allowing a distinction between different cellular states, or between healthy and cancer tissue. Similarly, Raman microspectroscopy was already successfully used to distinguish senescent from non-senescent cells, as well as to investigate other molecular changes that occur at cell and tissue level during aging. This review is intended to give an overview about various applications of Raman microspectroscopy to study aging, especially in the context of detecting senescent cells.
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Affiliation(s)
- Lisa Liendl
- Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, 1190, Vienna, Austria
| | - Johannes Grillari
- Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, 1190, Vienna, Austria
- Evercyte GmbH, 1190, Vienna, Austria
- Christian Doppler Laboratory on Biotechnology of Skin Aging, 1190, Vienna, Austria
| | - Markus Schosserer
- Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, 1190, Vienna, Austria.
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22
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Bezci SE, Werbner B, Zhou M, Malollari KG, Dorlhiac G, Carraro C, Streets A, O'Connell GD. Radial variation in biochemical composition of the bovine caudal intervertebral disc. JOR Spine 2019; 2:e1065. [PMID: 31572982 PMCID: PMC6764789 DOI: 10.1002/jsp2.1065] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 07/19/2019] [Accepted: 08/02/2019] [Indexed: 12/18/2022] Open
Abstract
Bovine caudal discs have been widely used in spine research due to their increased availability, large size, and mechanical and biochemical properties that are comparable to healthy human discs. However, despite their extensive use, the radial variations in bovine disc composition have not yet been rigorously quantified with high spatial resolution. Previous studies were limited to qualitative analyses or provided limited spatial resolution in biochemical properties. Thus, the main objective of this study was to provide quantitative measurements of biochemical composition with higher spatial resolution than previous studies that employed traditional biochemical techniques. Specifically, traditional biochemical analyses were used to measure water, sulfated glycosaminoglycan, collagen, and DNA contents. Gravimetric water content was compared to data obtained through Raman spectroscopy and differential scanning calorimetry. Additionally, spatial distribution of lipids in the disc's collagen network was visualized and quantified, for the first time, using multi-modal second harmonic generation (SHG) and Coherent anti-Stokes Raman (CARS) microscopy. Some heterogeneity was observed in the nucleus pulposus, where the water content and water-to-protein ratio of the inner nucleus were greater than the outer nucleus. In contrast, the bovine annulus fibrosus exhibited a more heterogeneous distribution of biochemical properties. Comparable results between orthohydroxyproline assay and SHG imaging highlight the potential benefit of using SHG microscopy as a less destructive method for measuring collagen content, particularly when relative changes are of interest. CARS images showed that lipid deposits were distributed equally throughout the disc and appeared either as individual droplets or as clusters of small droplets. In conclusion, this study provided a more comprehensive assessment of spatial variations in biochemical composition of the bovine caudal disc.
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Affiliation(s)
- Semih E. Bezci
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | - Benjamin Werbner
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | - Minhao Zhou
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | | | - Gabriel Dorlhiac
- Berkeley Biophysics ProgramUniversity of CaliforniaBerkeleyCalifornia
| | - Carlo Carraro
- Department of Chemical and Biomolecular EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | - Aaron Streets
- Berkeley Biophysics ProgramUniversity of CaliforniaBerkeleyCalifornia
- Department of BioengineeringUniversity of CaliforniaBerkeleyCalifornia
- Chan‐Zuckerberg BiohubSan FranciscoCalifornia
| | - Grace D. O'Connell
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
- Department of Orthopaedic SurgeryUniversity of CaliforniaSan FranciscoCalifornia
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Darvin ME, Choe CS, Schleusener J, Lademann J. Non-invasive depth profiling of the stratum corneum in vivo using confocal Raman microscopy considering the non-homogeneous distribution of keratin. BIOMEDICAL OPTICS EXPRESS 2019; 10:3092-3103. [PMID: 31259076 PMCID: PMC6583359 DOI: 10.1364/boe.10.003092] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/02/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
Confocal Raman microscopy has a number of advantages in investigating the human stratum corneum (SC) in vivo and ex vivo. The penetration profiles of xenobiotics in the SC, as well as depth profiles of the physiological parameters of the SC, such as the concentration of water depending on the strength of hydrogen bonds, total water concentration, the hydrogen bonding state of water molecules, concentration of intercellular lipids, the lamellar and lateral packing order of intercellular lipids, the concentration of natural moisturizing factor molecules, carotenoids, and the secondary and tertiary structure properties of keratin are well investigated. To consider the depth-dependent Raman signal attenuation, in most cases a normalization procedure is needed, which uses the main SC's protein keratin-related Raman peaks, based on the assumption that keratin is homogeneously distributed in the SC. We found that this assumption is not accurate for the bottom part of the SC, where the water concentration is considerably increased, thus, reducing the presence of keratin. Our results demonstrate that the bottom part of the SC depth profile should be multiplied by 0.94 in average in order to match this non-homogeneity, which result in a decrease of the uncorrected values in these depths. The correctly normalized depth profiles of the concentration of lipids, water, natural moisturizing factor and carotenoids are presented in this work. The obtained results should be taken into consideration in future skin research using confocal Raman microscopy.
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Affiliation(s)
- Maxim E. Darvin
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Chun-Sik Choe
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
- Kim Il Sung University, Ryongnam-Dong, Taesong District, Pyongyang, DPR Korea
| | - Johannes Schleusener
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Jürgen Lademann
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
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Chronic UVA1 Irradiation of Human Dermal Fibroblasts: Persistence of DNA Damage and Validation of a Cell Cultured-Based Model of Photoaging. J Invest Dermatol 2019; 139:1821-1824.e3. [PMID: 30878671 DOI: 10.1016/j.jid.2019.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 01/22/2019] [Accepted: 02/11/2019] [Indexed: 11/22/2022]
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25
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Abstract
Skin hydration is a complex process that influences the physical and mechanical properties of skin. Various technologies have emerged over the years to assess this parameter, with the current standard being electrical probe-based instruments. Nevertheless, their inability to provide detailed information has prompted the use of sophisticated spectroscopic and imaging methodologies, which are capable of in-depth skin analysis that includes structural and composition details. Modern imaging and spectroscopic techniques have transformed skin research in the dermatological and cosmetics disciplines, and are now commonly employed in conjunction with traditional methods for comprehensive assessment of both healthy and pathological skin. This article reviews current techniques employed in measuring skin hydration, and gives an account on their principle of operation and applications in skin-related research.
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26
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Limbert G, Masen MA, Pond D, Graham HK, Sherratt MJ, Jobanputra R, McBride A. Biotribology of the ageing skin—Why we should care. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biotri.2019.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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27
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Villaret A, Ipinazar C, Satar T, Gravier E, Mias C, Questel E, Schmitt A, Samouillan V, Nadal F, Josse G. Raman characterization of human skin aging. Skin Res Technol 2018; 25:270-276. [DOI: 10.1111/srt.12643] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 09/24/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Aurélie Villaret
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Célia Ipinazar
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Tuvana Satar
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Eléonore Gravier
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Céline Mias
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Emmanuel Questel
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Anne‐Marie Schmitt
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Valérie Samouillan
- CIRIMAT UMR 5085Institut CarnotEquipe Physique des PolymèresPaul Sabatier University Toulouse Cedex France
| | - Florence Nadal
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
| | - Gwendal Josse
- Centre de Recherche sur la PeauPierre Fabre Dermo‐Cosmétique Toulouse France
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Abstract
The constant intrinsic and extrinsic stress the skin is exposed to leads to significant impairments of the regenerative capacity of aging skin. Current skin rejuvenation approaches lack the ability to holistically support the biological processes that exhaust during aging skin degeneration, such as collagen production, cell migration and proliferation, and new vessel formation. Similar to chronic wounds, aged skin is characterized by dysfunction of key cellular regulatory pathways impairing regeneration. Recent evidence suggests that the same mechanisms hindering a physiologic healing response in chronic wounds are the basis of impaired tissue homeostasis in aged skin. Dysfunction of a main response-to-injury pathway, the hypoxia-inducible factor (HIF)-1α regulatory pathway, has been identified as pivotal both in chronic wounds and in aging skin degeneration. HIF-1α signaling is significantly involved in tissue homeostasis and neovascularization, resulting in the production of new collagen, elastin, and nourishing blood vessels. Modulating the functionality of this pathway has been demonstrated to significantly enhance tissue regeneration. In this review, we present an overview of the regenerative effects linked to the up-regulation of HIF-1α functionality, potentially resulting in skin rejuvenation on both the cellular level and the tissue level.
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29
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A comprehensive in vivo study of Caucasian facial skin parameters on 442 women. Arch Dermatol Res 2018; 310:691-699. [DOI: 10.1007/s00403-018-1860-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 07/05/2018] [Accepted: 08/26/2018] [Indexed: 10/28/2022]
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Kerch G. Distribution of tightly and loosely bound water in biological macromolecules and age-related diseases. Int J Biol Macromol 2018; 118:1310-1318. [PMID: 29981332 DOI: 10.1016/j.ijbiomac.2018.06.187] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/21/2018] [Accepted: 06/29/2018] [Indexed: 02/06/2023]
Abstract
This mini-review article is focused on publications devoted to the changes in water binding energy and content of bound water in biological tissues during aging processes, when bound water lost from the hydration layer becomes free water. Bound water is released during cataractogenesis. In skin, water bound to proteins and other biomacromolecules becomes more mobile with increasing skin age. Extracellular to intracellular water ratio increases with age and was associated with muscle cell atrophy. Bound water concentration decreases with age in hydrated human bone and can be correlated with the strength and toughness of the bone. Higher fraction of free water in malignant tissues compared to normal tissues was observed. Hydration water mobility is enhanced around tau amyloid fibers. Water plays a decisive role in amyloid formation as entropic driving force. In the natural aging processes dehydration and glycation may be considered as subsequent steps.
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Affiliation(s)
- G Kerch
- Institute of Polymer Materials, Department of Materials Science and Applied Chemistry, Riga Technical University, Azenes 14/24, Riga, Latvia.
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31
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Age related depth profiles of human Stratum Corneum barrier-related molecular parameters by confocal Raman microscopy in vivo. Mech Ageing Dev 2018; 172:6-12. [DOI: 10.1016/j.mad.2017.08.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 08/19/2017] [Indexed: 12/20/2022]
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32
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Samouillan V, Tang R, Dandurand J, Lacabanne C, Lacoste-Ferré MH, Villaret A, Nadal-Wollbold F, Schmitt AM. Chain dynamics of human dermis by Thermostimulated currents: A tool for new markers of aging. Skin Res Technol 2018; 25:12-19. [PMID: 29797593 DOI: 10.1111/srt.12588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND/PURPOSE The purpose of this clinical study was to identify dielectric markers to complete a previous thermal and vibrational study on the molecular and organizational changes in human dermis during intrinsic and extrinsic aging. METHODS Sun-exposed and non-exposed skin biopsies were collected from 28 women devised in two groups (20-30 and ≥60 years old). The dielectric relaxation modes associated with localized and delocalized dynamics in the fresh and dehydrated state were determined by the Thermostimulated currents technique (TSC). RESULTS Intrinsic and extrinsic aging induced significant evolution of some of the dielectric parameters of localized and delocalized dynamics of human skin. With photo-aging, freezable water forms a segregated phase in dermis and its dynamics is close to free water, what evidences the major role of extrinsic aging on water organization in human skin. Moreover, TSC indicators highlight the restriction of localized mobility with intrinsic aging due to glycation, and the cumulative effect of chronological aging and photo-exposition on the molecular mobility of the main structural proteins of the dermis at the mesoscopic scale. CONCLUSION TSC is a well-suited technique to scan the molecular mobility of human skin. It can be uses as a relevant complement of vibrational and thermal characterization to follow human skin modifications with intrinsic and extrinsic aging.
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Affiliation(s)
- V Samouillan
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, Toulouse, Cedex, France
| | - R Tang
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, Toulouse, Cedex, France
| | - J Dandurand
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, Toulouse, Cedex, France
| | - C Lacabanne
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, Toulouse, Cedex, France
| | - M-H Lacoste-Ferré
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, Toulouse, Cedex, France
| | - A Villaret
- Pierre Fabre Dermo-Cosmetique, Toulouse, Cedex, France
| | | | - A-M Schmitt
- Pierre Fabre Dermo-Cosmetique, Toulouse, Cedex, France
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33
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The Rejuvenating Effect and Tolerability of an Auto-Cross-Linked Hyaluronic Acid on Décolletage: A Pilot Prospective Study. Aesthetic Plast Surg 2018; 42:520-529. [PMID: 29218478 DOI: 10.1007/s00266-017-1022-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 10/29/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND A novel auto-cross-linked hyaluronic acid formulation (HA-ACP) has been proposed as a treatment for skin rejuvenation. This prospective pilot study aims to assess its tolerability and performance in the treatment of skin aging of the décolletage. METHODS Fifteen women (mean age 49.0 ± 8.0 (range 30-65)) who complained about the appearance of their décolletage were prospectively enrolled and treated with three sets of HA-ACP (IAL-SYSTEM ACP®) intradermal injections, administered three weeks apart. Control visits followed at 80 and 120 days from enrollment. The rejuvenating effect was assessed using the Beagley-Gibson and Fabi-Bolton scores. The investigators and the subjects also subjectively assessed skin appearance using a 1-10 scale. The rejuvenating effect and its persistence were assessed comparing the scores collected at the different experimental times by means of Wilcoxon rank tests. Adverse events and their duration were recorded and compared to those reported in the literature. RESULTS The HA-ACP formulation provided a significant improvement according to the Beagley-Gibson score (p < 0.005) at all time points. At the 120-day follow-up, the Fabi-Bolton score was significantly improved with respect to baseline (p < 0.05). The rejuvenating effect persisted unaltered between the 80-day and the 120-day visits. At the 120-day visit, the subjects' and investigators' subjective scores were between 8 and 10 in most cases. No unexpected adverse effects were observed. All adverse effects were well tolerated and disappeared over a short period. CONCLUSIONS The HA-ACP treatment under investigation is safe, well tolerated, and provides effective and long-lasting décolletage rejuvenation. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Lung PW, Tippavajhala VK, de Oliveira Mendes T, Téllez-Soto CA, Schuck DC, Brohem CA, Lorencini M, Martin AA. In vivo study of dermal collagen of striae distensae by confocal Raman spectroscopy. Lasers Med Sci 2018; 33:609-617. [PMID: 29308552 DOI: 10.1007/s10103-017-2431-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/26/2017] [Indexed: 11/29/2022]
Abstract
This research work mainly deals with studying qualitatively the changes in the dermal collagen of two forms of striae distensae (SD) namely striae rubrae (SR) and striae albae (SA) when compared to normal skin (NS) using confocal Raman spectroscopy. The methodology includes an in vivo human skin study for the comparison of confocal Raman spectra of dermis region of SR, SA, and NS by supervised multivariate analysis using partial least squares discriminant analysis (PLS-DA) to determine qualitatively the changes in dermal collagen. These groups are further analyzed for the extent of hydration of dermal collagen by studying the changes in the water content bound to it. PLS-DA score plot showed good separation of the confocal Raman spectra of dermis region into SR, SA, and NS data groups. Further analysis using loading plot and S-plot indicated the participation of various components of dermal collagen in the separation of these groups. Bound water content analysis showed that the extent of hydration of collagen is more in SD when compared to NS. Based on the results obtained, this study confirms the active involvement of dermal collagen in the formation of SD. It also emphasizes the need to study quantitatively the role of these various biochemical changes in the dermal collagen responsible for the variance between SR, SA, and NS.
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Affiliation(s)
- Pam Wen Lung
- Institute of Research and Development (IP&D), Universidade do Vale do Paraiba (UNIVAP), Av. Shishima Hifumi, 2911, Urbanova, São José dos Campos, SP, CEP: 12244-000, Brazil
| | - Vamshi Krishna Tippavajhala
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
| | - Thiago de Oliveira Mendes
- Biomedical Engineering Innovation Center, Biomedical Vibrational Spectroscopy Group, Universidade Brasil-UNBr, Rua Carolina Fonseca, 235-08230-030, Itaquera, Sao Paulo, Brazil
| | - Claudio A Téllez-Soto
- Biomedical Engineering Innovation Center, Biomedical Vibrational Spectroscopy Group, Universidade Brasil-UNBr, Rua Carolina Fonseca, 235-08230-030, Itaquera, Sao Paulo, Brazil
| | - Desirée Cigaran Schuck
- Grupo O Boticário, Av. Rui Barbosa, 4.110, Parque da Fonte, São José dos Pinhais, PR, CEP: 83050-010, Brazil
| | - Carla Abdo Brohem
- Grupo O Boticário, Av. Rui Barbosa, 4.110, Parque da Fonte, São José dos Pinhais, PR, CEP: 83050-010, Brazil
| | - Marcio Lorencini
- Grupo O Boticário, Av. Rui Barbosa, 4.110, Parque da Fonte, São José dos Pinhais, PR, CEP: 83050-010, Brazil
| | - Airton Abrahão Martin
- Biomedical Engineering Innovation Center, Biomedical Vibrational Spectroscopy Group, Universidade Brasil-UNBr, Rua Carolina Fonseca, 235-08230-030, Itaquera, Sao Paulo, Brazil. .,Departmento de Fisica, Universidade Federal do Piaui (UFPI), Campus Ministro Petronio Portella, Teresina, PI, CEP: 64049-550, Brazil.
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35
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Mayrovitz HN, Wong J, Fasen M. Age and Hydration dependence of jowl and forearm skin firmness in young and mature women. J Cosmet Dermatol 2017; 17:1262-1270. [PMID: 29280546 DOI: 10.1111/jocd.12477] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND Quantitative assessment of possible linkages between skin's firmness and water content is useful for cosmetic and clinical purposes and to better understand features of advancing age. OBJECTIVES Our goals were to characterize age-related differential features in skin firmness in women and determine the relationship between skin firmness and indices of skin water. METHODS Skin firmness was quantified using handheld devices that measure the force to indent skin 0.3 and 1.3 mm (F0.3 and F1.3). Skin hydration was quantified using handheld devices that measured tissue dielectric constant (TDC) at 300 MHz to skin depths of 0.5 and 2.0-2.5 mm. All parameters were measured bilaterally in the jowl area and volar forearm of 60 women grouped by age <45 years (YOUNG) and ≥45 years old (MATURE). RESULTS All measured parameters were bilaterally symmetrical at jowl and forearm. Forearm and jowl indentation forces were greater in YOUNG with statistically significant declines with advancing age with regression relations most evident at shallower indentation depths (P < .001). Quantitative relations for arm and jowl were F0.3 = 0.256 × AGE + 32.7 mN and F0.3 = -0.07 × AGE + 17.7 mN. Firmness was related to TDC values only when indentation force and TDC were assessed on the arm at the shallowest skin depths, as weakly related to firmness and was observed to change with age only when measured to a depth of 0.5 mm represented by TDC5 = 0.096 × AGE + 32.7. CONCLUSIONS Experimental finding show clear differences in skin firmness between age-groups with skin hydration playing a minor role. Possible explanations and suggestions for further studies are provided.
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Affiliation(s)
- Harvey N Mayrovitz
- College of Medical Sciences, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Jennifer Wong
- College of Medical Sciences, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Madeline Fasen
- College of Medical Sciences, Nova Southeastern University, Fort Lauderdale, FL, USA
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Choe C, Schleusener J, Lademann J, Darvin ME. Keratin-water-NMF interaction as a three layer model in the human stratum corneum using in vivo confocal Raman microscopy. Sci Rep 2017; 7:15900. [PMID: 29162917 PMCID: PMC5698327 DOI: 10.1038/s41598-017-16202-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 11/09/2017] [Indexed: 11/09/2022] Open
Abstract
The secondary and tertiary structure of keratin and natural moisturizing factor (NMF) are of great importance regarding the water regulating functions in the stratum corneum (SC). In this in vivo study, the depth-dependent keratin conformation and its relationship to the hydrogen bonding states of water and its content in the SC, are investigated using confocal Raman microscopy. Based on the obtained depth-profiles for the β-sheet/α-helix ratio, the stability of disulphide bonds, the amount of cysteine forming disulphide bonds, the buried/exposed tyrosine and the folding/unfolding states of keratin, a "three layer model" of the SC, regarding the keratin-water-NMF interaction is proposed. At the uppermost layers (30-0% SC depth), the keratin filaments are highly folded, entailing limited water binding sites, and NMF is mostly responsible for binding water. At the intermediate layers (70-30% SC depth), the keratin filaments are unfolded, have the most water binding sites and are prone to swelling. At the bottom layers (100-80% SC depth), the water binding sites are already occupied with water and cannot swell substantially. The hydrogen bonding states of water molecules can only be explained by considering both, the molecular structure of keratin and the contribution of NMF as a holistic system.
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Affiliation(s)
- ChunSik Choe
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117, Berlin, Germany.,Kim Il Sung University, Ryongnam-Dong, Taesong District, Pyongyang, Democratic People's Republic of Korea
| | - Johannes Schleusener
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117, Berlin, Germany
| | - Jürgen Lademann
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117, Berlin, Germany
| | - Maxim E Darvin
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117, Berlin, Germany.
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37
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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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38
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Tang R, Samouillan V, Dandurand J, Lacabanne C, Lacoste-Ferre MH, Bogdanowicz P, Bianchi P, Villaret A, Nadal-Wollbold F. Identification of ageing biomarkers in human dermis biopsies by thermal analysis (DSC) combined with Fourier transform infrared spectroscopy (FTIR/ATR). Skin Res Technol 2017; 23:573-580. [DOI: 10.1111/srt.12373] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2017] [Indexed: 01/05/2023]
Affiliation(s)
- R. Tang
- CIRIMAT; Paul Sabatier University; Toulouse France
| | | | - J. Dandurand
- CIRIMAT; Paul Sabatier University; Toulouse France
| | - C. Lacabanne
- CIRIMAT; Paul Sabatier University; Toulouse France
| | | | | | - P. Bianchi
- Pierre Fabre Dermo Cosmetique; Toulouse France
| | - A. Villaret
- Pierre Fabre Dermo Cosmetique; Toulouse France
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Silva SAME, Michniak-Kohn B, Leonardi GR. An overview about oxidation in clinical practice of skin aging. An Bras Dermatol 2017; 92:367-374. [PMID: 29186250 PMCID: PMC5514578 DOI: 10.1590/abd1806-4841.20175481] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 05/05/2016] [Indexed: 12/23/2022] Open
Abstract
Free radicals are unstable chemical species, highly reactive, being formed by cellular entities of different tissues. Increased production of these species without proper effective action of endogenous and exogenous antioxidant systems, generates a condition of oxidative stress, potentially provider of skin disorders that extend from functional impairments (skin cancer, dermatitis, chronic and acute inflammatory processes) even aesthetic character, with the destruction of structural proteins and cellular changes with the appearance of stains, marks and lines of expressions and other signs inherent to the intrinsic and extrinsic skin aging process. The antioxidants are chemical substances commonly used in clinical practice for topical application and may contribute in the fight against the radical species responsible for many skin damage. This paper summarized the main evidence of the benefits brought by the topical application of antioxidants in the skin, considering the amplitude of the indicative performance of antioxidant activity by in vitro and ex-vivo tests as well as in vivo tests. It is recognized that a breadth of product performance tests should be explored to truly identify the effectiveness of antioxidant products for an anti-aging effect.
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Affiliation(s)
| | - Bozena Michniak-Kohn
- Department of Pharmaceutics, Rutgers-The State University of New
Jersey, Ernest Mario School of Pharmacy - New Jersey, United States of
America
| | - Gislaine Ricci Leonardi
- Faculty of Pharmaceutical Sciences, Universidade Estadual de
Campinas (UNICAMP) - Campinas (SP), Brazil
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40
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Mayrovitz HN, Mahtani SA, Pitts E, Michaelos L. Race-related differences in tissue dielectric constant measured noninvasively at 300 MHz in male and female skin at multiple sites and depths. Skin Res Technol 2017; 23:471-478. [DOI: 10.1111/srt.12358] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2015] [Indexed: 11/27/2022]
Affiliation(s)
- H. N. Mayrovitz
- College of Medical Sciences; Nova Southeastern University; Ft. Lauderdale FL USA
| | - S. A. Mahtani
- College of Medical Sciences; Nova Southeastern University; Ft. Lauderdale FL USA
| | - E. Pitts
- College of Medical Sciences; Nova Southeastern University; Ft. Lauderdale FL USA
| | - L. Michaelos
- College of Medical Sciences; Nova Southeastern University; Ft. Lauderdale FL USA
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41
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Real-time atomic force microscopy imaging of collagen fibril under ultraviolet irradiation. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.07.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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42
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Mayrovitz HN, Corbitt K, Grammenos A, Abello A, Mammino J. Skin indentation firmness and tissue dielectric constant assessed in face, neck, and arm skin of young healthy women. Skin Res Technol 2016; 23:112-120. [DOI: 10.1111/srt.12310] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Harvey N. Mayrovitz
- College of Medical Sciences; Nova Southeastern University; Ft. Lauderdale FL USA
| | - Kelly Corbitt
- College of Osteopathic Medicine; Nova Southeastern University; Ft. Lauderdale FL USA
| | - Alexandra Grammenos
- College of Osteopathic Medicine; Nova Southeastern University; Ft. Lauderdale FL USA
| | - Allen Abello
- College of Osteopathic Medicine; Nova Southeastern University; Ft. Lauderdale FL USA
| | - Jason Mammino
- College of Osteopathic Medicine; Nova Southeastern University; Ft. Lauderdale FL USA
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Eklouh-Molinier C, Happillon T, Bouland N, Fichel C, Diébold MD, Angiboust JF, Manfait M, Brassart-Pasco S, Piot O. Investigating the relationship between changes in collagen fiber orientation during skin aging and collagen/water interactions by polarized-FTIR microimaging. Analyst 2016; 140:6260-8. [PMID: 26120602 DOI: 10.1039/c5an00278h] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Upon chronological aging, human skin undergoes structural and molecular modifications, especially at the level of type I collagen. This macromolecule is one of the main dermal structural proteins and presents several age-related alterations. It exhibits a triple helical structure and assembles itself to form fibrils and fibers. In addition, water plays an important role in stabilizing the collagen triple helix by forming hydrogen-bonds between collagen residues. However, the influence of water on changes of dermal collagen fiber orientation with age has not been yet understood. Polarized-Fourier Transform Infrared (P-FTIR) imaging is an interesting biophotonic approach to determine in situ the orientation of type I collagen fibers, as we have recently shown by comparing skin samples of different ages. In this work, P-FTIR spectral imaging was performed on skin samples from two age groups (35- and 38-year-old on the one hand, 60- and 66-year-old on the other hand), and our analyses were focused on the effect of H2O/D2O substitution. Spectral data were processed with fuzzy C-means (FCM) clustering in order to distinguish different orientations of collagen fibers. We demonstrated that the orientation was altered with aging, and that D2O treatment, affecting primarily highly bound water molecules, is more marked for the youngest skin samples. Collagen-bound water-related spectral markers were also highlighted. Our results suggest a weakening of water/collagen interactions with age. This non-destructive and label-free methodology allows us to understand better the importance of bound water in collagen fiber orientation alterations occurring with skin aging. Obtaining such structural information could find benefits in dermatology as well as in cosmetics.
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Affiliation(s)
- Christophe Eklouh-Molinier
- Equipe MéDIAN-Biophotonique et Technologies pour la Santé, UFR de Pharmacie, Université de Reims Champagne-Ardenne, Reims, France.
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44
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Saito M, Tanaka M, Misawa E, Yao R, Nabeshima K, Yamauchi K, Abe F, Yamamoto Y, Furukawa F. Oral administration of Aloe vera gel powder prevents UVB-induced decrease in skin elasticity via suppression of overexpression of MMPs in hairless mice. Biosci Biotechnol Biochem 2016; 80:1416-24. [PMID: 27045316 DOI: 10.1080/09168451.2016.1156480] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
This study reports the effects of oral Aloe vera gel powder (AVGP) containing Aloe sterols on skin elasticity and the extracellular matrix in ultraviolet B (UVB)-irradiated hairless mice. Ten-week-old hairless mice were fed diets containing 0.3% AVGP for 8 weeks and irradiated UVB for 6 weeks. Mice treated with AVGP showed significant prevention of the UVB-induced decrease in skin elasticity. To investigate the mechanism underlying this suppression of skin elasticity loss, we measured the expression of matrix metalloproteinase (MMP)-2, -9, and -13. AVGP prevented both the UVB-induced increases in MMPs expressions. Moreover, we investigated hyaluronic acid (HA) content of mice dorsal skin and gene expression of HA synthase-2 (Has2). In the results, AVGP oral administration prevented UVB-induced decreasing in skin HA content and Has2 expression and attenuates the UVB-induced decrease in serum adiponectin, which promotes Has2 expression. These results suggested that AVGP has the ability to prevent the skin photoaging.
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Affiliation(s)
- Marie Saito
- a Functional Food Ingredients Department, Food Ingredients & Technology Institute , Morinaga Milk Industry Co. Ltd. , Zama , Japan
| | - Miyuki Tanaka
- a Functional Food Ingredients Department, Food Ingredients & Technology Institute , Morinaga Milk Industry Co. Ltd. , Zama , Japan
| | - Eriko Misawa
- a Functional Food Ingredients Department, Food Ingredients & Technology Institute , Morinaga Milk Industry Co. Ltd. , Zama , Japan
| | - Ruiquing Yao
- a Functional Food Ingredients Department, Food Ingredients & Technology Institute , Morinaga Milk Industry Co. Ltd. , Zama , Japan
| | - Kazumi Nabeshima
- a Functional Food Ingredients Department, Food Ingredients & Technology Institute , Morinaga Milk Industry Co. Ltd. , Zama , Japan
| | - Kouji Yamauchi
- a Functional Food Ingredients Department, Food Ingredients & Technology Institute , Morinaga Milk Industry Co. Ltd. , Zama , Japan
| | - Fumiaki Abe
- a Functional Food Ingredients Department, Food Ingredients & Technology Institute , Morinaga Milk Industry Co. Ltd. , Zama , Japan
| | - Yuki Yamamoto
- b Department of Dermatology , Wakayama Medical University , Wakayama , Japan
| | - Fukumi Furukawa
- b Department of Dermatology , Wakayama Medical University , Wakayama , Japan
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45
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Abstract
Cutaneous science has seen considerable development in the last 25 years, in part due to the Omics revolution, and the appreciation that this organ is hardwired into the body's key neuro-immuno-endocrine axes. Moreover, there is greater appreciation of how stratification of skin disorders will permit more targeted and more effective treatments. Against this has been how the remarkable extension in the average human life-span, though in the West at least, this parallels worrying increases in lifestyle-associated conditions like diabetes, skin cancer etc. These demographic trends bring greater urgency to finding clinical solutions for numerous age-related deficits in skin function caused by extrinsic and intrinsic factors. Mechanisms for aging skin include the actions of reactive oxygen species (ROS), mtDNA mutations, and telomere shortening, as well as hormonal changes. We have also significantly improved our understanding of how to harness the skin's considerable regenerative capacity e.g., via its remarkable investment of stem cell subpopulations. In this way we hope to develop new strategies to selectively target the skin's capacity to undergo optimal wound repair and regeneration. Here, the unsung hero of the skin regenerative power may be the humble hair follicle, replete with its compliment of epithelial, mesenchymal, neural and other stem cells. This review introduces the topic of human skin aging, with a focus on how maintenance of function in this complex multi-cell type organ is key for retaining quality of life into old age.
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A Split-Face Study of the Effects of a Stabilized Hyaluronic Acid–Based Gel of Nonanimal Origin for Facial Skin Rejuvenation Using a Stamp-Type Multineedle Injector. Plast Reconstr Surg 2016; 137:809-816. [DOI: 10.1097/01.prs.0000480686.68275.60] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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[Methods for measuring skin aging]. Hautarzt 2016; 67:117-24. [PMID: 26746403 DOI: 10.1007/s00105-015-3752-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Aging affects human skin and is becoming increasingly important with regard to medical, social and aesthetic issues. Detection of intrinsic and extrinsic components of skin aging requires reliable measurement methods. Modern techniques, e.g., based on direct imaging, spectroscopy or skin physiological measurements, provide a broad spectrum of parameters for different applications.
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48
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In vivo confocal Raman microspectroscopy of the human skin: highlighting of spectral markers associated to aging via a research of correlation between Raman and biometric mechanical measurements. Anal Bioanal Chem 2015; 407:8363-72. [DOI: 10.1007/s00216-015-8964-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 07/29/2015] [Accepted: 08/05/2015] [Indexed: 10/23/2022]
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49
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Nissen CV, Philipsen PA, Wulf HC. Protoporphyrin IX formation after topical application of methyl aminolaevulinate and BF-200 aminolaevulinic acid declines with age. Br J Dermatol 2015; 173:760-6. [PMID: 25997508 DOI: 10.1111/bjd.13923] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2015] [Indexed: 01/22/2023]
Abstract
BACKGROUND Topical photodynamic therapy (PDT) is a popular treatment modality in dermatology. The effect of PDT in epidermal cells depends on formation of protoporphyrin IX (PpIX) from 5-aminolevulinic acid (ALA). A variety of physiological changes in epidermal function occur with increasing age, but no studies have investigated whether PpIX formation is age-related. OBJECTIVES To investigate a possible relationship between age and PpIX formation. METHODS Methyl aminolaevulinate cream (MAL) and 5-ALA gel (BF-200 ALA) were applied to two identical fields on the forearm of 30 healthy volunteers for 24 h. The volunteers were divided into two age groups: a young group under 55 years (range 18-54) and an older group over 55 years (range 65-85). PpIX formation was measured noninvasively every hour from 1-5 h, and after 18, 21 and 24 h. Skin phototype, stratum corneum hydration and ultraviolet (UV) damage were also assessed. Treatment efficacy in relation to age was evaluated in 100 basal cell carcinomas (BCCs) treated with MAL-PDT. RESULTS Both photosensitizers induced significantly more PpIX formation in the younger group. Linear regression revealed a significant age-related decline in PpIX formation after the standard application time of 3 h (P < 0.001 for both treatments). Skin phototype, stratum corneum hydration and UV damage were not associated with PpIX formation. The treatment efficacy of BCCs 3 months after MAL-PDT was higher in young patients (P = 0.012). CONCLUSIONS PpIX formation in human skin declines with age. No explanation could be attributed to skin phototype, stratum corneum hydration or UV damage. The consequence might be reduced efficacy of PDT in the elderly.
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Affiliation(s)
- C V Nissen
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Bispebjerg Bakke 23, DK-2400, Copenhagen NV, Denmark
| | - P A Philipsen
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Bispebjerg Bakke 23, DK-2400, Copenhagen NV, Denmark
| | - H C Wulf
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Bispebjerg Bakke 23, DK-2400, Copenhagen NV, Denmark
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50
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Mayrovitz HN, Grammenos A, Corbitt K, Bartos S. Age-related changes in male forearm skin-to-fat tissue dielectric constant at 300 MHz. Clin Physiol Funct Imaging 2015; 37:198-204. [PMID: 26278683 DOI: 10.1111/cpf.12286] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 06/29/2015] [Indexed: 11/29/2022]
Abstract
Prior research suggests that tissue dielectric constant (TDC) values are useful to assess localized skin water in females for early diagnosing breast cancer treatment-related lymphoedema and TDC values in young adults have shown gender differences. However, no TDC data are available for older males nor have ageing effects been studied despite known shifts in water state and other skin age-related changes. Thus our goals were to (i) characterize TDC values at various skin depths in young and older males, (ii) determine the dependence of these values on body composition parameters and (iii) establish inter-arm TDC ratios for use as normal male reference values. TDC measurements were made to depths of 0·5, 1·5, 2·5 and 5·0 mm bilaterally on volar forearm skin in 60 males in three groups of 20 that had mean ages ± SD of 24·0 ± 0·9, 40·0 ± 12·9 and 71·0 ± 8·0 years. Total body fat and water percentages were determined via bioimpedance at 50 KHz. Results showed that (i) for all age groups TDC values decreased with increasing depth, (ii) TDC values were not statistically different among age groups except at a depth of 0·5 mm, (iii) TDC values were highly negatively correlated with total body fat and (iv) inter-arm ratios varied little among age groups and depths. It is concluded that (i) age-related larger TDC values at only the shallowest depth is consistent with skin water shifting state from bound to more mobile in the oldest group and (ii) inter-arm ratios at any depth provide a basis to test for unilateral oedema.
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Affiliation(s)
- Harvey N Mayrovitz
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Alexandra Grammenos
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Kelly Corbitt
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
| | - Simona Bartos
- College of Medical Sciences, Nova Southeastern University, Ft. Lauderdale, FL, USA
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