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Chicharro-Luna E, Zúnica-García S, Martinez-Algarra C, Gracia-Sánchez A. Age-related variations in stratum corneum hydration in the foot. Maturitas 2024; 189:108104. [PMID: 39180901 DOI: 10.1016/j.maturitas.2024.108104] [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: 05/13/2024] [Revised: 08/11/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024]
Abstract
OBJECTIVE The aims of the study are to identify which region of the foot has lower hydration according to age, measure the variation in the level of stratum corneum hydration of the foot across the a wide age range, and examine hydration differences of the foot according to gender. STUDY DESIGN A descriptive observational study was conducted to assess stratum corneum hydration of the foot among 504 participants recruited between November 2023 and March 2024. MAIN OUTCOMES MEASURES Stratum corneum hydration assessment was conducted using a Corneometer 825® probe at 10 specific points on the foot. Data on sociodemographic variables, medical history, foot care habits, and hydration-related factors were collected. Statistical analyses were performed using SPSS v. 24.0. RESULTS Stratum corneum hydration of the foot varied significantly across regions, with higher hydration in the digital zone and lower hydration in the heel. An inverse correlation was found between age and hydration, with younger participants exhibiting higher hydration levels. Women showed higher hydration than men. Differences in hydration were observed between the right and left feet. CONCLUSION This study highlights the importance of localized assessment of foot skin dehydration. Aging significantly affects stratum corneum hydration of the foot. Gender differences in hydration suggest the importance of personalized approaches to skin care. Differential hydration between feet underscores the influence of mechanical load.
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Affiliation(s)
- Esther Chicharro-Luna
- Department of Behavioural Sciences and Health, Nursing Area, Faculty of Medicine, Miguel Hernández University, Institute of Health and Biomedical Research of Alicante (ISABIAL), Ctra N332, km 87, CP. 03550 San Juan de Alicante, Alicante, Spain.
| | - Sara Zúnica-García
- Department of Behavioural Sciences and Health, Nursing Area, Faculty of Medicine, Miguel Hernández University, Ctra N332, km 87, CP. 03550 San Juan de Alicante, Alicante, Spain.
| | - Cynthia Martinez-Algarra
- Department of Behavioural Sciences and Health, Nursing Area, Faculty of Medicine, Miguel Hernández University, Ctra N332, km 87, CP. 03550 San Juan de Alicante, Alicante, Spain
| | - Alba Gracia-Sánchez
- Department of Behavioural Sciences and Health, Nursing Area, Faculty of Medicine, Miguel Hernández University, Ctra N332, km 87, CP. 03550 San Juan de Alicante, Alicante, Spain.
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2
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Mambwe B, Mellody KT, Kiss O, O'Connor C, Bell M, Watson REB, Langton AK. Cosmetic retinoid use in photoaged skin: A review of the compounds, their use and mechanisms of action. Int J Cosmet Sci 2024. [PMID: 39128883 DOI: 10.1111/ics.13013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 07/22/2024] [Accepted: 07/22/2024] [Indexed: 08/13/2024]
Abstract
The inevitable attrition of skin due to ultraviolet radiation, termed photoaging, can be partially restored by treatment with retinoid compounds. Photoaged skin in lightly pigmented individuals, clinically presents with the appearance of wrinkles, increased laxity, and hyper- and hypopigmentation. Underlying these visible signs of ageing are histological features such as epidermal thinning, dermal-epidermal junction flattening, solar elastosis and loss of the dermal fibrillin microfibrillar network, fibrillar collagen and glycosaminoglycans. Retinoid compounds are comprised of three main generations with the first generation (all-trans retinoic acid, retinol, retinaldehyde and retinyl esters) primarily used for the clinical and cosmetic treatment of photoaging, with varying degrees of efficacy, tolerance and stability. All-trans retinoic acid is considered the 'gold standard' for skin rejuvenation; however, it is a prescription-only product largely confined to clinical use. Therefore, retinoid derivatives are readily incorporated into cosmeceutical formulations. The literature reported in this review suggests that retinol, retinyl esters and retinaldehyde that are used in many cosmeceutical products, are efficacious, safe and well-tolerated. Once in the skin, retinoids utilize a complex signalling pathway that promotes remodelling of photoaged epidermis and dermis and leads to the improvement of the cutaneous signs of photoaging.
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Affiliation(s)
- Bezaleel Mambwe
- Centre for Dermatology Research, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Kieran T Mellody
- Centre for Dermatology Research, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Orsolya Kiss
- Centre for Dermatology Research, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Clare O'Connor
- No7 Beauty Company, Walgreens Boots Alliance, Nottingham, UK
| | - Mike Bell
- No7 Beauty Company, Walgreens Boots Alliance, Nottingham, UK
| | - Rachel E B Watson
- Centre for Dermatology Research, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
- A*STAR Skin Research Laboratory (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore City, Singapore
| | - Abigail K Langton
- Centre for Dermatology Research, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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3
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Guy RH. Drug delivery to and through the skin. Drug Deliv Transl Res 2024; 14:2032-2040. [PMID: 38837116 PMCID: PMC11208237 DOI: 10.1007/s13346-024-01614-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2024] [Indexed: 06/06/2024]
Abstract
Drug delivery technology has advanced significantly over >50 years, and has produced remarkable innovation, countless publications and conferences, and generations of talented and creative scientists. However, a critical review of the current state-of-the-art reveals that the translation of clever and sophisticated drug delivery technologies into products, which satisfy important, unmet medical needs and have been approved by the regulatory agencies, has - given the investment made in terms of time and money - been relatively limited. Here, this point of view is illustrated using a case study of technology for drug delivery into and through the skin and aims: to examine the historical development of this field and the current state-of-the-art; to understand why the translation of drug delivery technologies into products that improve clinical outcomes has been quite slow and inefficient; and to suggest how the impact of technology may be increased and the process of concept to approved product accelerated.
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Affiliation(s)
- Richard H Guy
- Department of Life Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, U.K..
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4
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Polito MP, Marini G, Fabrizi A, Sercia L, Enzo E, De Luca M. Biochemical role of FOXM1-dependent histone linker H1B in human epidermal stem cells. Cell Death Dis 2024; 15:508. [PMID: 39019868 PMCID: PMC11255229 DOI: 10.1038/s41419-024-06905-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/04/2024] [Accepted: 07/09/2024] [Indexed: 07/19/2024]
Abstract
Epidermal stem cells orchestrate epidermal renewal and timely wound repair through a tight regulation of self-renewal, proliferation, and differentiation. In culture, human epidermal stem cells generate a clonal type referred to as holoclone, which give rise to transient amplifying progenitors (meroclone and paraclone-forming cells) eventually generating terminally differentiated cells. Leveraging single-cell transcriptomic data, we explored the FOXM1-dependent biochemical signals controlling self-renewal and differentiation in epidermal stem cells aimed at improving regenerative medicine applications. We report that the expression of H1 linker histone subtypes decrease during serial cultivation. At clonal level we observed that H1B is the most expressed isoform, particularly in epidermal stem cells, as compared to transient amplifying progenitors. Indeed, its expression decreases in primary epithelial culture where stem cells are exhausted due to FOXM1 downregulation. Conversely, H1B expression increases when the stem cells compartment is sustained by enforced FOXM1 expression, both in primary epithelial cultures derived from healthy donors and JEB patient. Moreover, we demonstrated that FOXM1 binds the promotorial region of H1B, hence regulates its expression. We also show that H1B is bound to the promotorial region of differentiation-related genes and negatively regulates their expression in epidermal stem cells. We propose a novel mechanism wherein the H1B acts downstream of FOXM1, contributing to the fine interplay between self-renewal and differentiation in human epidermal stem cells. These findings further define the networks that sustain self-renewal along the previously identified YAP-FOXM1 axis.
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Affiliation(s)
- Maria Pia Polito
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Science, University of Modena and Reggio Emilia, Modena, Italy
| | - Grazia Marini
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Science, University of Modena and Reggio Emilia, Modena, Italy
| | - Alessandra Fabrizi
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Science, University of Modena and Reggio Emilia, Modena, Italy
| | - Laura Sercia
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Science, University of Modena and Reggio Emilia, Modena, Italy
| | - Elena Enzo
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Science, University of Modena and Reggio Emilia, Modena, Italy.
| | - Michele De Luca
- Centre for Regenerative Medicine "Stefano Ferrari", Department of Life Science, University of Modena and Reggio Emilia, Modena, Italy.
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5
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Labecka N, Szczepanczyk M, Mojumdar E, Sparr E, Björklund S. Unraveling UVB effects: Catalase activity and molecular alterations in the stratum corneum. J Colloid Interface Sci 2024; 666:176-188. [PMID: 38593652 DOI: 10.1016/j.jcis.2024.03.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
AIM Ultraviolet B (UVB) radiation can compromise the functionality of the skin barrier through various mechanisms. We hypothesize that UVB induce photochemical alterations in the components of the outermost layer of the skin, known as the stratum corneum (SC), and modulate its antioxidative defense mechanisms. Catalase is a well-known antioxidative enzyme found in the SC where it acts to scavenge reactive oxygen species. However, a detailed characterization of acute UVB exposure on the activity of native catalase in the SC is lacking. Moreover, the effects of UVB irradiation on the molecular dynamics and organization of the SC keratin and lipid components remain unclear. Thus, the aim of this work is to characterize consequences of UVB exposure on the structural and antioxidative properties of catalase, as well as on the molecular and global properties of the SC matrix surrounding the enzyme. EXPERIMENTS The effect of UVB irradiation on the catalase function is investigated by chronoamperometry with a skin covered oxygen electrode, which probes the activity of native catalase in the SC matrix. Circular dichroism is used to explore changes of the catalase secondary structure, and gel electrophoresis is used to detect fragmentation of the enzyme following the UVB exposure. UVB induced alterations of the SC molecular dynamics and structural features of the SC barrier, as well as its water sorption behavior, are investigated by a complementary set of techniques, including natural abundance 13C polarization transfer solid-state NMR, wide-angle X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, and dynamic vapor sorption microbalance. FINDINGS The findings show that UVB exposure impairs the antioxidative function of catalase by deactivating both native catalase in the SC matrix and lyophilized catalase. However, UVB radiation does not alter the secondary structure of the catalase nor induce any observable enzyme fragmentation, which otherwise could explain deactivation of its function. NMR measurements on SC samples show a subtle increase in the molecular mobility of the terminal segments of the SC lipids, accompanied by a decrease in the mobility of lipid chain trans-gauche conformers after high doses of UVB exposure. At the same time, the NMR data suggest increased rigidity of the polypeptide backbone of the keratin filaments, while the molecular mobility of amino acid residues in random coil domains of keratin remain unaffected by UVB irradiation. The FTIR data show a consistent decrease in absorbance associated with lipid bond vibrations, relative to the main protein bands. Collectively, the NMR and FTIR data suggest a small modification in the composition of fluid and solid phases of the SC lipid and protein components after UVB exposure, unrelated to the hydration capacity of the SC tissue. To conclude, UVB deactivation of catalase is anticipated to elevate oxidative stress of the SC, which, when coupled with subtle changes in the molecular characteristics of the SC, may compromise the overall skin health and elevate the likelihood of developing skin disorders.
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Affiliation(s)
- Nikol Labecka
- Department of Biomedical Science, Malmö University, SE-205 06 Malmö, Sweden; Biofilms Research Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden; Division of Physical Chemistry, Chemistry Department, Lund University, SE-221 00 Lund, Sweden
| | - Michal Szczepanczyk
- Department of Biomedical Science, Malmö University, SE-205 06 Malmö, Sweden; Biofilms Research Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden
| | - Enamul Mojumdar
- Department of Biomedical Science, Malmö University, SE-205 06 Malmö, Sweden; Biofilms Research Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden; Division of Physical Chemistry, Chemistry Department, Lund University, SE-221 00 Lund, Sweden; CR Competence AB, Box 124, 22100 Lund, Sweden
| | - Emma Sparr
- Division of Physical Chemistry, Chemistry Department, Lund University, SE-221 00 Lund, Sweden
| | - Sebastian Björklund
- Department of Biomedical Science, Malmö University, SE-205 06 Malmö, Sweden; Biofilms Research Center for Biointerfaces, Malmö University, SE-205 06 Malmö, Sweden.
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6
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Nădăban A, Frame CO, El Yachioui D, Gooris GS, Dalgliesh RM, Malfois M, Iacovella CR, Bunge AL, McCabe C, Bouwstra JA. The Sphingosine and Phytosphingosine Ceramide Ratio in Lipid Models Forming the Short Periodicity Phase: An Experimental and Molecular Simulation Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13794-13809. [PMID: 38917358 PMCID: PMC11238587 DOI: 10.1021/acs.langmuir.4c00554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
The lipids located in the outermost layer of the skin, the stratum corneum (SC), play a crucial role in maintaining the skin barrier function. The primary components of the SC lipid matrix are ceramides (CERs), cholesterol (CHOL), and free fatty acids (FFAs). They form two crystalline lamellar phases: the long periodicity phase (LPP) and the short periodicity phase (SPP). In inflammatory skin conditions like atopic dermatitis and psoriasis, there are changes in the SC CER composition, such as an increased concentration of a sphingosine-based CER (CER NS) and a reduced concentration of a phytosphingosine-based CER (CER NP). In the present study, a lipid model was created exclusively forming the SPP, to examine whether alterations in the CER NS:CER NP molar ratio would affect the lipid organization. Experimental data were combined with molecular dynamics simulations of lipid models containing CER NS:CER NP at ratios of 1:2 (mimicking a healthy SC ratio) and 2:1 (observed in inflammatory skin diseases), mixed with CHOL and lignoceric acid as the FFA. The experimental findings show that the acyl chains of CER NS and CER NP and the FFA are in close proximity within the SPP unit cell, indicating that CER NS and CER NP adopt a linear conformation, similarly as observed for the LPP. Both the experiments and simulations indicate that the lamellar organization is the same for the two CER NS:CER NP ratios while the SPP NS:NP 1:2 model had a slightly denser hydrogen bonding network than the SPP NS:NP 2:1 model. The simulations show that this might be attributed to intermolecular hydrogen bonding with the additional hydroxide group on the headgroup of CER NP compared with CER NS.
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Affiliation(s)
- Andreea Nădăban
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
| | - Chloe O Frame
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235-1604, United States of America
| | - Dounia El Yachioui
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
| | - Gerrit S Gooris
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
| | - Robert M Dalgliesh
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Marc Malfois
- ALBA Synchrotron, Cerdanyola del Vallès, 08290 Barcelona, Spain
| | - Christopher R Iacovella
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235-1604, United States of America
| | - Annette L Bunge
- Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado 80401, United States of America
| | - Clare McCabe
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235-1604, United States of America
- School of Engineering and Physical Science, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
| | - Joke A Bouwstra
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden 2333CC, The Netherlands
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7
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Antiguas A, Dunnwald M. A novel noncanonical function for IRF6 in the recycling of E-cadherin. Mol Biol Cell 2024; 35:ar102. [PMID: 38809584 PMCID: PMC11244161 DOI: 10.1091/mbc.e23-11-0430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 05/17/2024] [Accepted: 05/22/2024] [Indexed: 05/30/2024] Open
Abstract
Interferon Regulatory Factor 6 (IRF6) is a transcription factor essential for keratinocyte cell-cell adhesions. Previously, we found that recycling of E-cadherin was defective in the absence of IRF6, yet total E-cadherin levels were not altered, suggesting a previously unknown, nontranscriptional function for IRF6. IRF6 protein contains a DNA binding domain (DBD) and a protein binding domain (PBD). The transcriptional function of IRF6 depends on its DBD and PBD, however, whether the PBD is necessary for the interaction with cytoplasmic proteins has yet to be demonstrated. Here, we show that an intact PBD is required for recruitment of cell-cell adhesion proteins at the plasma membrane, including the recycling of E-cadherin. Colocalizations and coimmunoprecipitations reveal that IRF6 forms a complex in recycling endosomes with Rab11, Myosin Vb, and E-cadherin, and that the PBD is required for this interaction. These data indicate that IRF6 is a novel effector of the endosomal recycling of E-cadherin and demonstrate a non-transcriptional function for IRF6 in regulating cell-cell adhesions.
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Affiliation(s)
- Angelo Antiguas
- Department of Anatomy and Cell Biology, Carver College of Medicine, The University of Iowa, Iowa City, IA, 52245
| | - Martine Dunnwald
- Department of Anatomy and Cell Biology, Carver College of Medicine, The University of Iowa, Iowa City, IA, 52245
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8
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Agrawal R, Jurel P, Deshmukh R, Harwansh RK, Garg A, Kumar A, Singh S, Guru A, Kumar A, Kumarasamy V. Emerging Trends in the Treatment of Skin Disorders by Herbal Drugs: Traditional and Nanotechnological Approach. Pharmaceutics 2024; 16:869. [PMID: 39065566 PMCID: PMC11279890 DOI: 10.3390/pharmaceutics16070869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/21/2024] [Accepted: 06/27/2024] [Indexed: 07/28/2024] Open
Abstract
Since the earliest days, people have been employing herbal treatments extensively around the world. The development of phytochemical and phytopharmacological sciences has made it possible to understand the chemical composition and biological properties of a number of medicinal plant products. Due to certain challenges like large molecular weight and low bioavailability, some components of herbal extracts are not utilized for therapeutic purposes. It has been suggested that herbal medicine and nanotechnology can be combined to enhance the benefits of plant extracts by lowering dosage requirements and adverse effects and increasing therapeutic activity. Using nanotechnology, the active ingredient can be delivered in an adequate concentration and transported to the targeted site of action. Conventional therapy does not fulfill these requirements. This review focuses on different skin diseases and nanotechnology-based herbal medicines that have been utilized to treat them.
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Affiliation(s)
- Rutvi Agrawal
- Rajiv Academy for Pharmacy, Mathura 281001, Uttar Pradesh, India; (R.A.); (A.G.)
| | - Priyanka Jurel
- Institute of Pharmaceutical Research, GLA University, Mathura 281406, Uttar Pradesh, India; (P.J.); (R.D.); (R.K.H.)
| | - Rohitas Deshmukh
- Institute of Pharmaceutical Research, GLA University, Mathura 281406, Uttar Pradesh, India; (P.J.); (R.D.); (R.K.H.)
| | - Ranjit Kumar Harwansh
- Institute of Pharmaceutical Research, GLA University, Mathura 281406, Uttar Pradesh, India; (P.J.); (R.D.); (R.K.H.)
| | - Akash Garg
- Rajiv Academy for Pharmacy, Mathura 281001, Uttar Pradesh, India; (R.A.); (A.G.)
| | - Ashwini Kumar
- Research and Development Cell, Department of Mechanical Engineering, School of Engineering and Technology, Manav Rachna International Institute of Research and Studies, Faridabad 121003, Haryana, India;
| | - Sudarshan Singh
- Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand;
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Ajay Guru
- Department of Cariology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, Tamil Nadu, India;
| | - Arun Kumar
- School of Pharmacy, Sharda University, Greater Noida 201306, Uttar Pradesh, India
| | - Vinoth Kumarasamy
- Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur 56000, Malaysia
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9
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Lunter D, Klang V, Eichner A, Savic SM, Savic S, Lian G, Erdő F. Progress in Topical and Transdermal Drug Delivery Research-Focus on Nanoformulations. Pharmaceutics 2024; 16:817. [PMID: 38931938 PMCID: PMC11207871 DOI: 10.3390/pharmaceutics16060817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/06/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Skin is the largest organ and a multifunctional interface between the body and its environment. It acts as a barrier against cold, heat, injuries, infections, chemicals, radiations or other exogeneous factors, and it is also known as the mirror of the soul. The skin is involved in body temperature regulation by the storage of fat and water. It is an interesting tissue in regard to the local and transdermal application of active ingredients for prevention or treatment of pathological conditions. Topical and transdermal delivery is an emerging route of drug and cosmetic administration. It is beneficial for avoiding side effects and rapid metabolism. Many pharmaceutical, technological and cosmetic innovations have been described and patented recently in the field. In this review, the main features of skin morphology and physiology are presented and are being followed by the description of classical and novel nanoparticulate dermal and transdermal drug formulations. The biophysical aspects of the penetration of drugs and cosmetics into or across the dermal barrier and their investigation in diffusion chambers, skin-on-a-chip devices, high-throughput measuring systems or with advanced analytical techniques are also shown. The current knowledge about mathematical modeling of skin penetration and the future perspectives are briefly discussed in the end, all also involving nanoparticulated systems.
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Affiliation(s)
- Dominique Lunter
- Department of Pharmaceutical Technology, Eberhard-Karls-Universität Tübingen, 72074 Tübingen, Germany;
| | - Victoria Klang
- Department of Pharmaceutical Sciences, University of Vienna, 1010 Vienna, Austria;
| | - Adina Eichner
- Department of Dermatology and Venereology, Martin Luther University Halle-Wittenberg, 06108 Halle, Germany;
- Institute of Applied Dermatopharmacy, Martin Luther University Halle-Wittenberg (IADP) e.V., 06108 Halle, Germany
| | - Sanela M. Savic
- Faculty of Technology in Leskovac, University of Niš, 16000 Leskovac, Serbia;
- R&D Sector, DCP Hemigal, 16000 Leskovac, Serbia
| | - Snezana Savic
- Department of Pharmaceutical Technology and Cosmetology, Faculty of Pharmacy, University of Belgrade, 11000 Belgrade, Serbia;
| | - Guoping Lian
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, UK;
- Unilever R&D Colworth, Sharnbrook, Bedford MK44 1LQ, UK
| | - Franciska Erdő
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, 1083 Budapest, Hungary
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10
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Tam EA, Robb FE, Champagne AM. Lipids in the American Alligator stratum corneum provide insights into the evolution of vertebrate skin. Comp Biochem Physiol A Mol Integr Physiol 2024; 292:111620. [PMID: 38452971 DOI: 10.1016/j.cbpa.2024.111620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
In terrestrial vertebrates, the outermost layer of the skin, the stratum corneum (SC), provides a durable and flexible interface with the environment and is comprised of corneocytes embedded in lipids. However, the morphology and lipid composition of the SC varies throughout evolutionary history. Because crocodilians and birds phylogenetically bracket the Archosaurian clade, lipid composition in crocodilian SC may be compared with that of birds and other vertebrates to make inferences about broader phylogenetic patterns within Archosaurs while highlighting adaptations in vertebrate skin. We identified and quantified lipid classes in the SC of the American Alligator (Alligator mississippiensis) from three skin regions varying in mobility. Our results find similarities in lipid composition between alligator and avian SC, including a high percentage of cerebrosides, a polar lipid previously found only in the SC of birds and bats. Furthermore, polar lipids were more abundant in the most mobile region of the SC. Because polar lipids bind with water to increase skin hydration and therefore its pliability under physical stress, we hypothesize that selection for lipids in Archosaurian SC was driven by the unique distribution of proteins in the SC of this clade, and cerebrosides may have served as pre-adaptations for flight.
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Affiliation(s)
- Elissa A Tam
- Biology Department, University of Southern Indiana, Evansville, IN 47712, USA
| | - Frank E Robb
- Environmental Education Awareness Research Support and Services, Sharpes, FL 32959, USA
| | - Alex M Champagne
- Biology Department, University of Southern Indiana, Evansville, IN 47712, USA.
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11
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Gibson R, Krug L, Ramsey DL, Safaei A, Aspley S. Beneficial Effects of Multi-Micronutrient Supplementation with Collagen Peptides on Global Wrinkles, Skin Elasticity and Appearance in Healthy Female Subjects. Dermatol Ther (Heidelb) 2024; 14:1599-1614. [PMID: 38811471 PMCID: PMC11169317 DOI: 10.1007/s13555-024-01184-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 05/09/2024] [Indexed: 05/31/2024] Open
Abstract
INTRODUCTION With ageing, collagen production slows down, leading to wrinkle appearance and loss of elasticity. Replenishing key structural molecules through oral supplementation is a promising strategy that complements the topical delivery of cosmetic products and creates a holistic skincare regimen. The present study assessed the effectiveness of a food supplement with collagen peptides, vitamins and minerals in improving the quality of the skin and general wellbeing of healthy women. METHODS This was an open-label study of 135 women aged between 45 and 65 years. A 3-month treatment phase followed a 4-week washout phase, with visits scheduled at baseline and after each month of treatment. Subjects received three tablets of Richelet Skin Renewal daily. The primary outcome was change from baseline to month 3 in global wrinkles score by expert grader analysis. Secondary outcomes included changes in skin elasticity and other skin attributes, product assessment via self-perception questionnaires and total antioxidant status. RESULTS A total of 116 subjects completed the study. The mean global wrinkles score indicated a statistically significant decrease from 5.9 at baseline to 5.0 at month 3 (p < 0.0001), with 83.6% of subjects showing an improvement; significant changes were reported at all intermediate visits. The increase in skin elasticity was also statistically significant (R2 score 0.74 at month 3; p < 0.0001). All subjects (100%) demonstrated significant improvements in skin texture, skin tone evenness, skin radiance and overall skin quality at the month 3 visit. CONCLUSIONS The study product achieved statistically significant, noticeable effects on global wrinkles, skin elasticity and a range of skin attributes after 3 months of use in healthy women. These results strengthen the evidence for supplementation of collagen peptides and other micronutrients as an effective component of anti-ageing skincare.
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Affiliation(s)
| | - Lieselotte Krug
- P&G Health Germany GmbH, Sulzbacher Straße 40-65824, Schwalbach am Taunus, Germany
| | | | - Azadeh Safaei
- P&G Health, Route de Saint George 47, Petit-Lancy 1213, Geneva, Switzerland
| | - Sue Aspley
- P&G, 452 Basingstoke Road, Reading, RG2 0QE, UK
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12
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Oh S, Kim H, Kim M, Jin X, Zheng S, Yi TH. The effects of Jawoongo soap on skin improvement. J Cosmet Dermatol 2024; 23:1862-1874. [PMID: 38275088 DOI: 10.1111/jocd.16199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024]
Abstract
BACKGROUND Jawoongo is used to treat and prevent skin issues such as dry and keratinization disorders, burns, trauma, pigmentation, scarring, and inflammatory skin conditions. In this study, the efficacy and safety of 0.47% Jawoongo extract-containing soap (JAUN-CS) were assessed in terms of skin improvement effects such as cleansing, moisturizing, sebum secretion management, and skin elasticity enhancement. METHODS Twenty healthy adult men and women aged 20-60 years old took part in the study. Before and after using JAUN-CS, the participants were divided into groups, and various skin improvement effects were measured utilizing machines such as the Corneometer, Tewameter TM 300, and Visioscan. A dermatologist analyzed the product's safety in accordance with Frosch & Kligman and the Cosmetic, Toiletry, and Fragrance Association (CTFA) rules. RESULTS Using JAUN reduced the amount of base and point makeup by 25.7% and 76.7%, respectively. Also, JAUN showed a great facial exfoliation effect by removing the old and lifted skin keratins by 84.7% and 20.3%, respectively. Impurities in facial pores decreased by 58%, too. Furthermore, JAUN increased the moisture content of deep skin and skin surface by 3.5% and 74.0%, and skin elasticity by 2.8%. Skin tone, skin texture, skin radiance, and skin barrier all showed improvements of 3.3%, 20.0%, 15.0%, and 115.2%, respectively. Lastly, cleansing with JAUN successfully enhanced the condition of the youth triangle by 7.6%, while TEWL significantly decreased by 52.7%. Neither the JAUN nor the control group soap showed any adverse reactions, such as erythema or allergies, during the testing period. CONCLUSIONS The results of this study demonstrated that JAUN is safe for human use and has various skin-improving properties, making Jawoongo a promising natural material for the development of functional cosmetics in the future.
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Affiliation(s)
- Sarang Oh
- College of Life Science, Kyung Hee University, Yongin-si, Gyeong-gi-do, Korea
- Snowwhitefactory Co., Ltd., Seoul, Korea
| | - Hongyong Kim
- College of Life Science, Kyung Hee University, Yongin-si, Gyeong-gi-do, Korea
| | - Myeongju Kim
- College of Life Science, Kyung Hee University, Yongin-si, Gyeong-gi-do, Korea
| | - Xiangji Jin
- Department of Pharmacology, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Shengdao Zheng
- College of Life Science, Kyung Hee University, Yongin-si, Gyeong-gi-do, Korea
- Snowwhitefactory Co., Ltd., Seoul, Korea
| | - Tae-Hoo Yi
- College of Life Science, Kyung Hee University, Yongin-si, Gyeong-gi-do, Korea
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13
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Yoon YE, Jung YJ, Lee SJ. The Anticancer Activities of Natural Terpenoids That Inhibit Both Melanoma and Non-Melanoma Skin Cancers. Int J Mol Sci 2024; 25:4423. [PMID: 38674007 PMCID: PMC11050645 DOI: 10.3390/ijms25084423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The prevalence of two major types of skin cancer, melanoma and non-melanoma skin cancer, has been increasing worldwide. Skin cancer incidence is estimated to rise continuously over the next 20 years due to ozone depletion and an increased life expectancy. Chemotherapeutic agents could affect healthy cells, and thus may be toxic to them and cause numerous side effects or drug resistance. Phytochemicals that are naturally occurring in fruits, plants, and herbs are known to possess various bioactive properties, including anticancer properties. Although the effects of phytochemicals are relatively milder than chemotherapeutic agents, the long-term intake of phytochemicals may be effective and safe in preventing tumor development in humans. Diverse phytochemicals have shown anti-tumorigenic activities for either melanoma or non-melanoma skin cancer. In this review, we focused on summarizing recent research findings of the natural and dietary terpenoids (eucalyptol, eugenol, geraniol, linalool, and ursolic acid) that have anticancer activities for both melanoma and non-melanoma skin cancers. These terpenoids may be helpful to protect skin collectively to prevent tumorigenesis of both melanoma and nonmelanoma skin cancers.
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Affiliation(s)
- Ye Eun Yoon
- Department of Biotechnology, Graduate School of Life Sciences & Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02855, Republic of Korea;
| | - Young Jae Jung
- Department of Biotechnology, Graduate School of Life Sciences & Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02855, Republic of Korea;
| | - Sung-Joon Lee
- Department of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul 02855, Republic of Korea
- Interdisciplinary Program in Precision Public Health, BK21 Four Institute of Precision Public Health, Korea University, Seoul 02846, Republic of Korea
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14
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Paraskevopoulos G, Fandrei F, Kumar Pratihast A, Paraskevopoulou A, Panoutsopoulou E, Opálka L, Singh Mithu V, Huster D, Vávrová K. Effects of imidazolium ionic liquids on skin barrier lipids - Perspectives for drug delivery. J Colloid Interface Sci 2024; 659:449-462. [PMID: 38183811 DOI: 10.1016/j.jcis.2023.12.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 11/27/2023] [Accepted: 12/20/2023] [Indexed: 01/08/2024]
Abstract
Ionic liquids (ILs) have great potential to facilitate transdermal and topical drug delivery. Here, we investigated the mechanism of action of amphiphilic ILs 1-methyl-3-octylimidazolium bromide (C8MIM) and 3-dodecyl-1-methylimidazolium bromide (C12MIM) in skin barrier lipid models in comparison to their complex effects in human skin. C8MIM incorporated in a skin lipid model was a better permeation enhancer than C12MIM for water and model drugs, theophylline and diclofenac. Solid state 2H NMR and X-ray diffraction indicated that both ILs prefer the cholesterol-rich regions in skin lipids without significantly perturbing their lamellar arrangement and that C8MIM induces the formation of an isotropic lipid phase to a greater extent compared to C12MIM. C12MIM applied topically to the lipid model or human skin as a pretreatment was more potent than C8MIM. When co-applied with the drugs to human skin, aqueous C12MIM was more potent than C8MIM in enhancing theophylline permeation, but neither IL affected (even decreased) diclofenac permeation. Thus, the IL's ability to permeabilize skin lipid barrier is strongly modulated by its ability to reach the site of action and its interactions with drug and solvent. Such an interplay is far from trivial and requires detailed investigation to realize the full potential of ILs.
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Affiliation(s)
- Georgios Paraskevopoulos
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Ferdinand Fandrei
- Institute of Medical Physics and Biophysics, University of Leipzig, Härtelstr. 16-18, 04275 Leipzig, Germany
| | - Ajit Kumar Pratihast
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Anna Paraskevopoulou
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Eleni Panoutsopoulou
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Lukáš Opálka
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Venus Singh Mithu
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Daniel Huster
- Institute of Medical Physics and Biophysics, University of Leipzig, Härtelstr. 16-18, 04275 Leipzig, Germany
| | - Kateřina Vávrová
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
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15
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Tan SH, Liu S, Teoh SH, Bonnard C, Leavesley D, Liang K. A sustainable strategy for generating highly stable human skin equivalents based on fish collagen. BIOMATERIALS ADVANCES 2024; 158:213780. [PMID: 38280287 DOI: 10.1016/j.bioadv.2024.213780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 12/20/2023] [Accepted: 01/17/2024] [Indexed: 01/29/2024]
Abstract
Tissue engineered skin equivalents are increasingly recognized as potential alternatives to traditional skin models such as human ex vivo skin or animal skin models. However, most of the currently investigated human skin equivalents (HSEs) are constructed using mammalian collagen which can be expensive and difficult to extract. Fish skin is a waste product produced by fish processing industries and identified as a cost-efficient and sustainable source of type I collagen. In this work, we describe a method for generating highly stable HSEs based on fibrin fortified tilapia fish collagen. The fortified fish collagen (FFC) formulation is optimized to enable reproducible fabrication of full-thickness HSEs that undergo limited contraction, facilitating the incorporation of human donor-derived skin cells and formation of biomimetic dermal and epidermal layers. The morphology and barrier function of the FFC HSEs are compared with a commercial skin model and validated with immunohistochemical staining and transepithelial electrical resistance testing. Finally, the potential of a high throughput screening platform with FFC HSE is explored by scaling down its fabrication to 96-well format.
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Affiliation(s)
- Shi Hua Tan
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Shaoqiong Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Swee Hin Teoh
- College of Materials Science and Engineering, Hunan University, People's Republic of China
| | - Carine Bonnard
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore; Skin Research Institute of Singapore (SRIS), Singapore
| | | | - Kun Liang
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), Singapore; Skin Research Institute of Singapore (SRIS), Singapore.
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16
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Wang L, Xue Z, Tian Y, Zeng W, Zhang T, Lu H. A single-cell transcriptome atlas of Lueyang black-bone chicken skin. Poult Sci 2024; 103:103513. [PMID: 38350389 PMCID: PMC10875617 DOI: 10.1016/j.psj.2024.103513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/15/2024] Open
Abstract
As the largest organ of the body, the skin participates in various physiological activities, such as barrier function, sensory function, and temperature regulation, thereby maintaining the balance between the body and the natural environment. To date, compositional and transcriptional profiles in chicken skin cells have not been reported. Here, we report detailed transcriptome analyses of cell populations present in the skin of a black-feather chicken and a white-feather chicken using single-cell RNA sequencing (scRNA-seq). By analyzing cluster-specific gene expression profiles, we identified 12 cell clusters, and their corresponding cell types were also characterized. Subsequently, we characterized the subpopulations of keratinocytes, myocytes, mesenchymal cells, fibroblasts, and melanocytes. It is worth noting that we have identified a subpopulation of keratinocytes involved in pigment granule capture and a subpopulation of melanocytes involved in pigment granule deposition, both of which have a higher cell abundance in black-feather chicken compared to white-feather chicken. Meanwhile, we also compared the cellular heterogeneity features of Lueyang black-bone chicken skin with different feather colors. In addition, we also screened out 12 genes those could be potential markers of melanocytes. Finally, we validated the specific expression of SGK1, WNT5A, CTSC, TYR, and LAPTM5 in black-feather chicken, which may be the key candidate genes determining the feather color differentiation of Lueyang black-bone chicken. In summary, this study first revealed the transcriptome characteristics of chicken skin cells via scRNA-seq technology. These datasets provide valuable information for the study of avian skin characteristics and have important implications for future poultry breeding.
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Affiliation(s)
- Ling Wang
- School of Biological Science and Engineering, Shaanxi University of Technology, 723001 Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, 723001 Hanzhong, China
- Engineering Research Center of Quality Improvement and Safety Control of Qinba Special Meat Products, Universities of Shaanxi Province, 723001 Hanzhong, China
- QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C., Shaanxi University of Technology, 723001 Hanzhong, China
| | - Zhen Xue
- School of Biological Science and Engineering, Shaanxi University of Technology, 723001 Hanzhong, China
| | - Yingmin Tian
- School of Mathematics and Computer Science, Shaanxi University of Technology, 723001 Hanzhong, China
| | - Wenxian Zeng
- School of Biological Science and Engineering, Shaanxi University of Technology, 723001 Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, 723001 Hanzhong, China
- Engineering Research Center of Quality Improvement and Safety Control of Qinba Special Meat Products, Universities of Shaanxi Province, 723001 Hanzhong, China
| | - Tao Zhang
- School of Biological Science and Engineering, Shaanxi University of Technology, 723001 Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, 723001 Hanzhong, China
- Engineering Research Center of Quality Improvement and Safety Control of Qinba Special Meat Products, Universities of Shaanxi Province, 723001 Hanzhong, China
- QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C., Shaanxi University of Technology, 723001 Hanzhong, China
| | - Hongzhao Lu
- School of Biological Science and Engineering, Shaanxi University of Technology, 723001 Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, 723001 Hanzhong, China
- Engineering Research Center of Quality Improvement and Safety Control of Qinba Special Meat Products, Universities of Shaanxi Province, 723001 Hanzhong, China
- QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C., Shaanxi University of Technology, 723001 Hanzhong, China
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17
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Yin C, Yu L, Feng L, Zhou JT, Du C, Shao X, Cheng Y. Nanotoxicity of two-dimensional nanomaterials on human skin and the structural evolution of keratin protein. NANOTECHNOLOGY 2024; 35:225101. [PMID: 38387099 DOI: 10.1088/1361-6528/ad2c58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/21/2024] [Indexed: 02/24/2024]
Abstract
Two-dimensional (2D) materials have been increasingly widely used in biomedical and cosmetical products nowadays, yet their safe usage in human body and environment necessitates a comprehensive understanding of their nanotoxicity. In this work, the effect of pristine graphene and graphene oxide (GO) on the adsorption and conformational changes of skin keratin using molecular dynamics simulations. It is found that skin keratin can be absorbed through various noncovalent driving forces, such as van der Waals (vdW) and electrostatics. In the case of GO, the oxygen-containing groups prevent tighter contact between skin keratin and the graphene basal plane through steric effects and electrostatic repulsion. On the other hand, electrostatic attraction and hydrogen bonding enhance their binding affinity to positively charged residues such as lysine and arginine. The secondary structure of skin keratin is better preserved in GO system, suggesting that GO has good biocompatibility. The charged groups on GO surface perform as the hydrogen bond acceptors, which is like to the natural receptors of keratin in this physiological environment. This work contributes to a better knowledge of the nanotoxicity of cutting-edge 2D materials on human health, thereby advancing their potential biological applications.
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Affiliation(s)
- Changji Yin
- Monash Suzhou Research Institute, Monash University, SIP, Suzhou 215000, People's Republic of China
- Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Lei Yu
- Guiyang Maternal and Child Health Care Hospital, Guiyang, Guizhou 550002, People's Republic of China
| | - Lei Feng
- Monash Suzhou Research Institute, Monash University, SIP, Suzhou 215000, People's Republic of China
| | - Joey Tianyi Zhou
- Centre for Frontier AI Research (CFAR), Agency for Science, Technology and Research (A*STAR), Singapore
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Chunbao Du
- Monash Suzhou Research Institute, Monash University, SIP, Suzhou 215000, People's Republic of China
- College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an 710065, People's Republic of China
| | - Xiaoshan Shao
- Guiyang Maternal and Child Health Care Hospital, Guiyang, Guizhou 550002, People's Republic of China
| | - Yuan Cheng
- Monash Suzhou Research Institute, Monash University, SIP, Suzhou 215000, People's Republic of China
- Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
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18
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Oizumi R, Sugimoto Y, Aibara H. The Potential of Exercise on Lifestyle and Skin Function: Narrative Review. JMIR DERMATOLOGY 2024; 7:e51962. [PMID: 38483460 PMCID: PMC10979338 DOI: 10.2196/51962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 01/24/2024] [Accepted: 02/06/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND The skin is an important organ of the human body and has moisturizing and barrier functions. Factors such as sunlight and lifestyle significantly affect these skin functions, with sunlight being extremely damaging. The effects of lifestyle habits such as smoking, diet, and sleep have been studied extensively. It has been found that smoking increases the risk of wrinkles, while excessive fat and sugar intake leads to skin aging. Lack of sleep and stress are also dangerous for the skin's barrier function. In recent years, the impact of exercise habits on skin function has been a focus of study. Regular exercise is associated with increased blood flow to the skin, elevated skin temperature, and improved skin moisture. Furthermore, it has been shown to improve skin structure and rejuvenate its appearance, possibly through promoting mitochondrial biosynthesis and affecting hormone secretion. Further research is needed to understand the effects of different amounts and content of exercise on the skin. OBJECTIVE This study aims to briefly summarize the relationship between lifestyle and skin function and the mechanisms that have been elucidated so far and introduce the expected effects of exercise on skin function. METHODS We conducted a review of the literature using PubMed and Google Scholar repositories for relevant literature published between 2000 and 2022 with the following keywords: exercise, skin, and life habits. RESULTS Exercise augments the total spectrum power density of cutaneous blood perfusion by a factor of approximately 8, and vasodilation demonstrates an enhancement of approximately 1.5-fold. Regular exercise can also mitigate age-related skin changes by promoting mitochondrial biosynthesis. However, not all exercise impacts are positive; for instance, swimming in chlorinated pools may harm the skin barrier function. Hence, the exercise environment should be considered for its potential effects on the skin. CONCLUSIONS This review demonstrates that exercise can potentially enhance skin function retention.
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Affiliation(s)
- Ryosuke Oizumi
- Faculty of Nursing, Shijonawate gakuen University, Daito-shi, Japan
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19
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Peled A, Sprecher E. Proteolytic and Antiproteolytic Activity in the Skin: Gluing the Pieces Together. J Invest Dermatol 2024; 144:466-473. [PMID: 37865898 DOI: 10.1016/j.jid.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 08/22/2023] [Indexed: 10/23/2023]
Abstract
Epidermal differentiation is ultimately aimed at the formation of a functional barrier capable of protecting the organism from the environment while preventing loss of biologically vital elements. Epidermal differentiation entails a delicately regulated process of cell-cell junction formation and dissolution to enable upward cell migration and desquamation. Over the past two decades, the deciphering of the genetic basis of a number of inherited conditions has delineated the pivotal role played in this process by a series of proteases and protease inhibitors, including serpins, cathepsins, and cystatins, suggesting novel avenues for therapeutic intervention in both rare and common disorders of cornification.
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Affiliation(s)
- Alon Peled
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Eli Sprecher
- Division of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel; Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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20
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Kim JH, Sim WJ, Nam J, Park SH, Song JH, Nam TG, Kim JH, Lim W, Lim TG. Skin-whitening effects of Spergularia marina by suppressing MITF translocation. Food Sci Biotechnol 2024; 33:925-933. [PMID: 38371694 PMCID: PMC10866852 DOI: 10.1007/s10068-023-01376-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/16/2023] [Accepted: 06/15/2023] [Indexed: 02/20/2024] Open
Abstract
Spergularia marina is a plant that grows in salty regions along the coastline and exerts radical-scavenging and anti-inflammatory effects. In this study, we investigated the skin-whitening effects of S. marina extract (SME) in B16F10 melanoma cells. SME was found to exert radical-scavenging effects. It suppressed α-melanocyte-stimulating hormone-induced melanogenesis and tyrosinase activity. We also assessed the melanin production signaling pathway to identify the inhibitory action mechanism of SME on melanogenesis. SME decreased the protein expression levels of tyrosinase-related protein (TRP)-1, TRP-2, and tyrosinase, which play important roles in melanogenesis. Furthermore, western blotting revealed that SME inhibited the nuclear translocation of melanocyte inducing transcription factor (MITF), which is a transcription factor for TRP-1, TRP-2, and tyrosinase, suggesting that SME exerts its skin-whitening effect by inhibiting MITF nuclear translocation. Therefore, SME may potentially be used in skin-whitening medicines and cosmetics.
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Affiliation(s)
- Jae-Hoon Kim
- Department of Food Science & Biotechnology, Sejong University, Seoul, 05006 Republic of Korea
| | - Woo-Jin Sim
- Department of Food Science & Biotechnology, Sejong University, Seoul, 05006 Republic of Korea
| | - Jisoo Nam
- Department of Food Science & Biotechnology, Sejong University, Seoul, 05006 Republic of Korea
| | - Soo-Hyun Park
- Korea Food Research Institute, Jeollabuk-Do, Republic of Korea
| | - Ji-Hye Song
- Korea Food Research Institute, Jeollabuk-Do, Republic of Korea
| | - Tae Gyu Nam
- Major of Food Science and Biotechnology, Division of Bio-Convergence, Kyounggi University, Suwon, 16227 Republic of Korea
| | - Jong Hun Kim
- Department of Food Science and Biotechnology, Sungshin (Women’s) University, Seoul, 01133 Republic of Korea
| | - Wonchul Lim
- Department of Food Science & Biotechnology, and Carbohydrate Bioproduct Research Center, Sejong University, Seoul, 05006 Republic of Korea
| | - Tae-Gyu Lim
- Department of Food Science & Biotechnology, Sejong University, Seoul, 05006 Republic of Korea
- Department of Food Science & Biotechnology, and Carbohydrate Bioproduct Research Center, Sejong University, Seoul, 05006 Republic of Korea
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21
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Reuvekamp H, Hekman E, van der Heide E, Matthews D. Strategies in surface engineering for the regulation of microclimates in skin-medical product interactions. Heliyon 2024; 10:e25395. [PMID: 38370189 PMCID: PMC10869805 DOI: 10.1016/j.heliyon.2024.e25395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/17/2023] [Accepted: 01/25/2024] [Indexed: 02/20/2024] Open
Abstract
There is a growing number of personal healthcare devices that are in prolonged contact with the skin. The functionality of these products is linked to the interface formed by the contact between the medical apparatus and the skin. The interface can be characterised by its topology, compliance, and moisture and thermal regulating capabilities. Many devices are, however, described to have suboptimal and occlusive contacts, resulting in physiological unfavourable microclimates at the interface. The resulting poor management of moisture and temperature can impact the functionality and utility of the device and, in severe cases, lead to physical harm to the user. Being able to control the microclimate is therefore expected to limit medical-device related injuries and prevent associated skin complications. Surface engineering can modify and potentially enhance the regulation of the microclimate factors surrounding the interface between a product's surface and the skin. This review provides an overview of potential engineering solutions considering the needs for, and influences on, regulation of temperature and moisture by considering the skin-medical device interface as a system. These findings serve as a platform for the anticipated progress in the role of surface engineering for skin-device microclimate regulation.
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Affiliation(s)
- H. Reuvekamp
- Laboratory for Surface Technology and Tribology, Department of Mechanics of Solids, Surfaces and Systems (MS3), Faculty of Engineering Technology, University of Twente, Postbox 217, 7500 AE Enschede, the Netherlands
| | - E.E.G. Hekman
- Biomedical Device Design and Production Lab, Department of Biomechanical Engineering (BE), Faculty of Engineering Technology, University of Twente, Postbox 217, 7500 AE Enschede, the Netherlands
| | - E. van der Heide
- Laboratory for Surface Technology and Tribology, Department of Mechanics of Solids, Surfaces and Systems (MS3), Faculty of Engineering Technology, University of Twente, Postbox 217, 7500 AE Enschede, the Netherlands
| | - D.T.A. Matthews
- Laboratory for Surface Technology and Tribology, Department of Mechanics of Solids, Surfaces and Systems (MS3), Faculty of Engineering Technology, University of Twente, Postbox 217, 7500 AE Enschede, the Netherlands
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22
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Vindenes HK, Drengenes C, Amin H, Irgens-Hansen K, Svanes C, Bertelsen RJ. Longitudinal analysis of the skin microbiome in association with hand eczema, hand hygiene practices and moisturizer use. J Eur Acad Dermatol Venereol 2024. [PMID: 38419413 DOI: 10.1111/jdv.19906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/22/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND The skin microbiota maintains a physical and immunological barrier to the environment. Little is known about how the microbiome changes over time or the effect of hand hygiene practices and moisturizer use. OBJECTIVES To assess sex-specific changes in skin bacteria over time, and how the microbiome is related to self-reported hand eczema, hand hygiene practices and use of moisturizers. METHODS Swab samples from the dorsal hand were collected at baseline and 6.5 years later during the COVID-19 pandemic, in 168 participants from the RHINESSA study in Bergen, Norway. The skin samples were analysed by 16S rRNA amplicon sequencing. RESULTS The alpha diversity of the hand microbiome increased from baseline to follow-up, and beta diversity differed by sex at both time points. The relative abundance increased for several bacteria from baseline to follow-up, with sex-specific differences. Current hand eczema and aggravating hand eczema during the COVID-19 pandemic were associated with an increase in Staphylococcus. High hand washing frequency at home was associated with lower alpha diversity and with higher abundance of Staphylococcus, Corynebacterium, Finegoldia, and Pseudomonas and lower abundance of Propionibacterium and Pelomonas. The alpha diversity increased with increasing time passing between hand washing and sampling, whereas more frequent moisturizer use was associated with significantly lower alpha diversity, and a change in abundance for some bacteria, such as more Pseudomonas. CONCLUSIONS This longitudinal study revealed an overall increase in skin microbial diversity over a 6-year period, which was unexpected since follow-up was performed during the COVID-19 pandemic when vigorous hand hygienic practices were introduced. Sex-specific differences were identified at both time points. Individuals with hand eczema seem to develop a more dysbiotic skin bacterial community over time. Hand washing and use of moisturizers, with typically gender-specific habitual patterns, may lead to change in bacterial composition.
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Affiliation(s)
- H K Vindenes
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - C Drengenes
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - H Amin
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - K Irgens-Hansen
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Global Public Health and Primary Care, Occupational and Environmental Medicine, University of Bergen, Bergen, Norway
| | - C Svanes
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
- Centre for International Health, University of Bergen, Bergen, Norway
| | - R J Bertelsen
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
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23
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Sakamoto H, Nishikawa M, Yamada S. Development of tight junction-strengthening compounds using a high-throughput screening system to evaluate cell surface-localized claudin-1 in keratinocytes. Sci Rep 2024; 14:3312. [PMID: 38332234 PMCID: PMC10853544 DOI: 10.1038/s41598-024-53649-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 02/03/2024] [Indexed: 02/10/2024] Open
Abstract
Tight junctions (TJs) are important factors constituting the physical barriers of the skin, and their suppression has been described in various conditions, such as aged skin and atopic dermatitis lesions. However, the methods for improving skin TJ function remain insufficient. Therefore, to obtain compounds that can improve TJ function, we developed a novel high-throughput screening system termed live-cell immunostaining to evaluate cell surface-localized claudin-1 (CLDN1) with high selectivity using normal human epidermal keratinocytes (NHEKs). Heparinoid and phospho-pyridoxal (p-Pyr), a metabolite of pyridoxine, were identified as hit compounds. In addition, heparinoid was strongly suggested to increase CLDN1 expression by inhibiting epidermal growth factor receptor signaling. By contrast, p-Pyr did not enhance CLDN1 expression, but it accelerated the translocation of CLDN1 to the cell surface. Finally, we confirmed that heparinoid and p-Pyr improved barrier function in NHEKs in a transepithelial electrical resistance assay. In conclusion, heparinoid and p-Pyr could potentially ameliorate skin conditions by improving TJ function.
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Affiliation(s)
- Hiroki Sakamoto
- Research and Development Headquarters, Well-Being Research Laboratories, Lion Corporation, 100 Tajima, Odawara, Kanagawa, 256-0811, Japan
| | - Momoyo Nishikawa
- Research and Development Headquarters, Well-Being Research Laboratories, Lion Corporation, 100 Tajima, Odawara, Kanagawa, 256-0811, Japan
| | - Seigo Yamada
- Research and Development Headquarters, Well-Being Research Laboratories, Lion Corporation, 100 Tajima, Odawara, Kanagawa, 256-0811, Japan.
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24
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Landau M, Landau SB. Hacking the International Nomenclature of Cosmetic Ingredients List- How to Read Ingredients in Cosmetic Products and What Is Important for a Dermatologist to Know? Dermatol Clin 2024; 42:7-11. [PMID: 37977687 DOI: 10.1016/j.det.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Skin specialists and practitioners are commonly requested to recommend on cosmetic products to improve skin appearance and address certain "non-medical" concerns. During residency and further education, dermatologists rarely expand their knowledge regarding cosmetic ingredients, except if they are a cause of medical condition or disease, such as contact dermatitis. This review provides guidelines to the INCI list structure, together with basic principles of cosmetic products formulation.
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Affiliation(s)
- Marina Landau
- Department of Plastic and Reconstructive Surgery, Shamir Medical Center, Be'er Ya'aqov, Merkaz, Israel.
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25
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Ferrara F, Pecorelli A, Pambianchi E, White S, Choudhary H, Casoni A, Valacchi G. Vitamin C compounds mixture prevents skin barrier alterations and inflammatory responses upon real life multi pollutant exposure. Exp Dermatol 2024; 33:e15000. [PMID: 38284201 DOI: 10.1111/exd.15000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 12/10/2023] [Accepted: 12/15/2023] [Indexed: 01/30/2024]
Abstract
Cutaneous tissues is among the main target of outdoor stressors such as ozone (O3 ), particulate matter (PM), and ultraviolet radiation (UV) all involved in inducing extrinsic skin aging. Only a few reports have studied the multipollutant interaction and its effect on skin damage. In the present work, we intended to evaluate the ability of pollutants such as O3 and PM to further aggravate cutaneous UV damage. In addition, the preventive properties of a cosmeceutical formulation mixture (AOX mix) containing 15% vitamin C (L-ascorbic acid), 1% vitamin E (α-tocopherol) and 0.5% ferulic acid was also investigated. Skin explants obtained from three different subjects were exposed to 200 mJ UV light, 0.25 ppm O3 for 2 h, and 30 min of diesel engine exhaust (DEE), alone or in combination for 4 days (time point D1 and D4). The results showed a clear additive effect of O3 and DEE in combination with UV in terms of keratin 10, Desmocollin and Claudin loss. In addition, the multipollutant exposure significantly induced the inflammatory response measured as NLRP1/ASC co-localization suggesting the activation of the inflammasome machinery. Finally, the loss of Aquaporin3 was also affected by the combined outdoor stressors. Furthermore, daily topical pre-treatment with the AOX Mix significantly prevented the cutaneous changes induced by the multipollutants. In conclusion, this study is among the first to investigate the combined effects of three of the most harmful outdoor stressors on human skin and confirms that daily topical of an antioxidant application may prevent pollution-induced skin damage.
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Affiliation(s)
- Francesca Ferrara
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Ferrara, Italy
| | - Alessandra Pecorelli
- Department of Environmental and Prevention Sciences, University of Ferrara, Ferrara, Italy
| | - Erika Pambianchi
- Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, North Carolina, USA
| | | | | | - Alice Casoni
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Ferrara, Italy
| | - Giuseppe Valacchi
- Department of Environmental and Prevention Sciences, University of Ferrara, Ferrara, Italy
- Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, North Carolina, USA
- Department of Food and Nutrition, Kyung Hee University, Seoul, South Korea
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26
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You L, Shen T, Hu W, Cho JY. Protopanaxatriol activates EGFR and HER2 to strengthen the molecules of skin protection in human keratinocytes. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 123:155167. [PMID: 37952408 DOI: 10.1016/j.phymed.2023.155167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/06/2023] [Accepted: 10/24/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUND Protopanaxatriol (PPT) is an important ginsenoside produced by ginseng, a tonic plant used in many areas. PPT has beneficial effects against many disease states including inflammation, diabetes, and cancer. However, PPT's protective effects on skin integrity have been rarely studied. Previously, we reported that PPT can maintain skin moisture through activation of nuclear factor kappa B (NF-κB) and mitogen-activated protein kinases (MAPKs) pathways. However, the cellular targets for enhancing skin moisturizing effects via PPT are still unknown. PURPOSE We wanted to identify the upstream targets of PPT on upregulating moisturizing factor (HAS-2) expression. STUDY DESIGN We investigated which upstream proteins can be directly stimulated by PPT to modulate NF-κB, MAPKs and other signaling cascades. Then, the targeted proteins were overexpressed to check the relationship with HAS-2. Next, the cellular thermal shift assay (CETSA) was conducted to check the relationship between targeted proteins and PPT. METHODS A human keratinocyte HaCaT were employed to measure the levels of moisturizing factors and the signaling proteins activated by PPT. Transfection conditions were established with DNA constructs expressing epidermal growth factor receptor (EGFR) and human epidermal growth factor receptor 2 (HER2) and their mutants prepared by site-directed mutagenesis. Further investigation on molecular mechanisms was conducted by RT-PCR, luciferase reporter gene assay, CETSA, or Western blot. RESULTS We found that PPT can activate the phosphorylation of EGFR and HER2. These stimulations caused Src phosphorylation, which resulted in the activation of phosphoinositide 3-kinases (PI3K)/pyruvate dehydrogenase kinase 1 (PDK1)/protein kinase B (AKT)/NF-κB and MAPKs signaling cascades. Additionally, EGFR and HER2 activation resulted in phosphorylation of signal transducer and activator of transcription 3 (STAT3) and calcium/calmodulin-dependent protein kinase II (CaMKII). This induced the AMP-activated protein kinase alpha (AMPKα) signaling pathway. Additionally, PPT blocked peroxisome proliferator activated receptor gamma (PPARγ), which also contributed to the phosphorylation of Src. CONCLUSION Overall, we first found that PPT offers excellent protection of the skin barrier and hydrogen supply in keratinocytes. Moreover, growth factor receptors such as EGFR and HER2 were revealed to be central enzymes to be directly targeted by PPT. These results suggest a potentially valuable role as a cosmetic ingredient.
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Affiliation(s)
- Long You
- Department of Integrative Biotechnology, and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ting Shen
- Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Experimental & Translational Non-Coding RNA Research, School of Medicine, Yangzhou University, Yangzhou 225009, China.
| | - Weicheng Hu
- Institute of Translational Medicine, School of Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Experimental & Translational Non-Coding RNA Research, School of Medicine, Yangzhou University, Yangzhou 225009, China.
| | - Jae Youl Cho
- Department of Integrative Biotechnology, and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea.
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27
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Dessì A, Di Maria C, Pintus R, Fanos V, Bosco A. Lipidomics and Metabolomics in Infant Atopic Dermatitis: What's the Correlation with Early Nutrition? Curr Pediatr Rev 2024; 20:510-524. [PMID: 37055903 DOI: 10.2174/1573396320666230411093122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 02/22/2023] [Accepted: 03/02/2023] [Indexed: 04/15/2023]
Abstract
To date, the complex picture of atopic dermatitis (AD) has not yet been fully clarified, despite the important prevalence of this disease in the pediatric population (20%) and the possibility of persistence into adulthood, with important implications for the quality of life of those affected, as well as significant social and financial costs. The most recent scientific evidence suggests a new interpretation of AD, highlighting the important role of the environment, particularly that of nutrition in the early stages of development. In fact, the new indications seem to point out the harmful effect of elimination diets, except in rare cases, the uselessness of chrono-insertions during complementary feeding and some benefits, albeit weak, of breastfeeding in those at greater risk. In this context, metabolomics and lipidomics can be necessary for a more in-depth knowledge of the complex metabolic network underlying this pathology. In fact, an alteration of the metabolic contents in children with AD has been highlighted, especially in correlation to the intestinal microbiota. While preliminary lipidomic studies showed the usefulness of a more in-depth knowledge of the alterations of the skin barrier to improve the development of baby skin care products. Therefore, investigating the response of different allergic phenotypes could be useful for better patient management and understanding, thus providing an early intervention on dysbiosis necessary to regulate the immune response from the earliest stages of development.
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Affiliation(s)
- Angelica Dessì
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, AOU Cagliari, Cagliari, Italy
| | - Camilla Di Maria
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, AOU Cagliari, Cagliari, Italy
| | - Roberta Pintus
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, AOU Cagliari, Cagliari, Italy
| | - Vassilios Fanos
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, AOU Cagliari, Cagliari, Italy
| | - Alice Bosco
- Department of Surgical Sciences, University of Cagliari and Neonatal Intensive Care Unit, AOU Cagliari, Cagliari, Italy
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28
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Gou S, Lapteva M, Brusini R, Flegeau K, Bourdon F, Kaya G, Faivre J, Kalia YN. Development of an ex vivo porcine skin model for the preclinical evaluation of subcutaneously injected biomacromolecules. Int J Pharm 2023; 648:123562. [PMID: 37907142 DOI: 10.1016/j.ijpharm.2023.123562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/27/2023] [Accepted: 10/28/2023] [Indexed: 11/02/2023]
Abstract
Subcutaneous administration is used to deliver systemically-acting biotherapeutics, e.g. antibodies, and locally-acting biomacromolecules, e.g. hyaluronic acid. However, few preclinical models are available to evaluate post-injection behaviour in the tissue microenvironment. In vivo animal studies are costly, time-consuming, and raise obvious ethical concerns. In vitro models are cost-efficient, high-throughput solutions, but cannot simulate complex skin structure and biological function. An ex vivo model (containing hypodermis) with an extended culture period that enabled longitudinal studies would be of great interest for both the pharmaceutical and cosmeceutical industries. We describe the development of one such ex vivo model, using viable full-thickness porcine skin. Structural integrity was evaluated using a histological scoring system: spongiosis and epidermal detachment were identified as discriminating parameters. Ki67 and Claudin-1 expression reported on epidermal cell proliferation and barrier function, respectively and their expression decreased as a function of incubation time. After optimization, the system was used to investigate the fate/impact of subcutaneously administered hyaluronic acid (HA) formulations. The results showed that HA was localized at the injection site and adjacent adipocytes were well preserved during 5 days' incubation and confirmed that the full-thickness ex vivo porcine skin model could provide a platform for preclinical evaluation of subcutaneously injected biomacromolecules.
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Affiliation(s)
- Si Gou
- School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
| | - Maria Lapteva
- School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
| | | | | | | | - Gürkan Kaya
- Department of Dermatology, University Hospital of Geneva, 1211 Geneva, Switzerland
| | - Jimmy Faivre
- Teoxane SA, Rue de Lyon 105, 1203 Geneva, Switzerland
| | - Yogeshvar N Kalia
- School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland.
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29
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Jančálková P, Kopečná M, Kurka M, Kováčik A, Opálka L, Sagrafena I, Vávrová K. Skin Barrier Fine Tuning through Low-Temperature Lipid Chain Transition. J Invest Dermatol 2023; 143:2427-2435.e3. [PMID: 37394058 DOI: 10.1016/j.jid.2023.06.193] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 05/31/2023] [Accepted: 06/16/2023] [Indexed: 07/04/2023]
Abstract
The lipids in the mammalian stratum corneum (SC) adopt an unusually rigid arrangement to form a vital barrier preventing water loss and harmful environmental impacts. Just above the physiological temperature, a subset of barrier lipids undergoes a phase transition from a very tight orthorhombic to a looser hexagonal arrangement and vice versa. The purpose of this lipid transition in skin physiology is unknown. Permeability experiments on isolated human SC indicated that the transition affects the activation energy for a model compound that prefers lateral movement along lipid layers but not for water or a large polymer that would cross the SC through the pore pathway. The orthorhombic phase content of SC lipids, as determined by infrared spectroscopy, was also modulated by (de)hydration. Spontaneous rearrangement of human SC lipid monolayers into 10 nm higher multilamellar islets at 32-37 °C but not at room temperature was revealed by atomic force microscopy. Our findings add to our knowledge of fundamental skin physiology suggesting a fine temperature- and hydration-controlled switch from fluid lipids (required for lipid barrier assembly) to rigid and tightly packed lipids in the mature SC (necessary for the water and permeability barriers).
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Affiliation(s)
- Pavla Jančálková
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Monika Kopečná
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Michal Kurka
- Center of Materials and Nanotechnologies (CEMNAT), Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Andrej Kováčik
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Lukáš Opálka
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Irene Sagrafena
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Kateřina Vávrová
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic.
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30
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Deacon BN, Piasentin N, Cai Q, Chen T, Lian G. An examination of published datasets of skin permeability and partition coefficients. Toxicol In Vitro 2023; 93:105702. [PMID: 37769857 DOI: 10.1016/j.tiv.2023.105702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 09/15/2023] [Accepted: 09/22/2023] [Indexed: 10/03/2023]
Abstract
Permeability and partition coefficients of the skin barrier are important for assessing dermal absorption, bioavailability, and safety of cosmetics and medicine. We use the Potts and Guy equation to analyse the dependence of skin permeability on the hydrophobicity of permeants and highlight the significant differences in published datasets. Correlations of solute partition to skin are examined to understand the likely causes of the differences in the skin permeability datasets. Recently published permeability datasets show weak correlation and low dependence on hydrophobicity. As expected, early datasets show good correlation with hydrophobicity due to the related derivation. The weaker correlation of later datasets cannot be explained by the partition to skin lipids. All the datasets of solute partition to skin lipid showed a similar correlation to hydrophobicity where the log-linear correlation coefficient of partition is almost the same of the log-linear coefficient of Potts and Guy equation. Weak correlation and dependence of the late permeability datasets with SC lipid/water partition and that they are significantly under predicted by the Potts and Guy equation suggests either additional non-lipid pathway at play or a weaker skin barrier property.
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Affiliation(s)
- Benjamin N Deacon
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU27XH, UK
| | - Nicola Piasentin
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU27XH, UK; Unilever R&D Colworth, Unilever, Sharnbrook MK441LQ, UK
| | - Qiong Cai
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU27XH, UK
| | - Tao Chen
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU27XH, UK
| | - Guoping Lian
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU27XH, UK; Unilever R&D Colworth, Unilever, Sharnbrook MK441LQ, UK.
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31
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Méchin MC, Simon M. Deimination in epidermal barrier and hair formation. Philos Trans R Soc Lond B Biol Sci 2023; 378:20220245. [PMID: 37778378 PMCID: PMC10542453 DOI: 10.1098/rstb.2022.0245] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/13/2023] [Indexed: 10/03/2023] Open
Abstract
Peptidylarginine deiminases (PADs) transform a protein arginine residue into the non-standard amino acid citrulline. This calcium-dependent post-translational modification of proteins is called citrullination or deimination. As described in this special issue, PADs play a role in various physiological processes, and PAD deregulations are involved in many human diseases. Three PADs are expressed in the epidermis, where their roles begin to be deciphered. PAD1 and PAD3 are involved in keratinocyte differentiation, particularly in the epidermal barrier function, keratins, filaggrin and filaggrin-related proteins being the most abundant deiminated epidermal proteins. Reduced amounts of deiminated proteins and PAD1 expression may be involved in the pathogenesis of psoriasis and atopic dermatitis, two very frequent and chronic skin inflammatory diseases. The trichohyalin/PAD3/transglutaminase three pathway is important for hair shaft formation. Mutations of the PADI3 gene, leading to a decreased activity or abnormal localization of the corresponding isotype, are the cause of a rare hair disorder called uncombable hair syndrome, and are associated with the central centrifugal cicatricial alopecia, a frequent alopecia mainly affecting women of African ancestry. This article is part of the Theo Murphy meeting issue 'The virtues and vices of protein citrullination'.
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Affiliation(s)
- Marie-Claire Méchin
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, INSERM, University Paul Sabatier, 31024 Toulouse, France
| | - Michel Simon
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, INSERM, University Paul Sabatier, 31024 Toulouse, France
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Fernandes B, Alves S, Schmidt V, Bizarro AF, Pinto M, Pereira H, Marto J, Lourenço AM. Primary Prevention of Canine Atopic Dermatitis: Breaking the Cycle-A Narrative Review. Vet Sci 2023; 10:659. [PMID: 37999481 PMCID: PMC10674681 DOI: 10.3390/vetsci10110659] [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: 09/20/2023] [Revised: 10/24/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023] Open
Abstract
Canine atopic dermatitis (cAD) is a common and distressing skin condition in dogs, affecting up to 30% of the canine population. It not only impacts their quality of life but also that of their owners. Like human atopic dermatitis (hAD), cAD has a complex pathogenesis, including genetic and environmental factors. Current treatments focus on managing clinical signs, but they can be costly and have limitations. This article emphasizes the importance of preventing cAD from developing in the first place. Understanding the role of the skin's protective barrier is crucial, as its dysfunction plays a vital role in both hAD and cAD. hAD prevention studies have shown promising results in enhancing the skin barrier, but more research is needed to support more robust conclusions. While hAD primary prevention is currently a focal point of intensive investigation in human medicine, research on cAD primary prevention remains under-researched and almost non-existent. Pioneering effective prevention strategies for cAD holds immense potential to enhance the quality of life for both dogs and their owners. Additionally, it bears the promise of a translational impact on human research. Hence, further exploration of this crucial topic is not only relevant but also timely and imperative, warranting support and encouragement.
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Affiliation(s)
- Beatriz Fernandes
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1649-004 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1600-277 Lisbon, Portugal
| | - Susana Alves
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1649-004 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
| | - Vanessa Schmidt
- School of Veterinary Science, University of Liverpool, Liverpool L69 3GH, UK
| | - Ana Filipa Bizarro
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1649-004 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1600-277 Lisbon, Portugal
| | - Marta Pinto
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1649-004 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1600-277 Lisbon, Portugal
| | - Hugo Pereira
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1649-004 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
| | - Joana Marto
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1600-277 Lisbon, Portugal
| | - Ana Mafalda Lourenço
- CIISA—Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1649-004 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
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Chao CL, Kuo HP, Huang HW, Cheng MY, Chao HF, Lu SM, Lin HC, Wang CJ, Chang TC, Wu CR. Poria cocos Lanostane Triterpenoids Extract Promotes Collagen and Hyaluronic Acid Production in D-Galactose-Induced Aging Rats. Life (Basel) 2023; 13:2130. [PMID: 38004270 PMCID: PMC10672192 DOI: 10.3390/life13112130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/18/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
The global aging population is expanding at an increasingly rapid pace, with approximately one-fourth of the world's population expected to be composed of elderly individuals by 2050. Aging skin is one of the major characteristics expressed in the elderly. The study comprehensively utilizes both cell and animal experiments to confirm the skin anti-aging effects of Poria cocos (P. cocos), which is one of the most important traditional Chinese medicines classified as tonic Chinese medicine, commonly used to treat physical weakness and aging-associated diseases. We demonstrate in this study that P. cocos lanostane triterpenoids extract (Lipucan®) ameliorates aging skin and promotes collagen accumulation and hyaluronic acid production in galactose-induced aging rats. Purified lanostane triterpenoids were initially identified as active components in P. cocos, which significantly increased collagen and hyaluronic acid levels in cultured human skin cells.
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Affiliation(s)
- Chien-Liang Chao
- Sinphar Pharmaceutical Co., Ltd., Sinphar Group, Yilan 269, Taiwan; (C.-L.C.); (H.-W.H.); (M.-Y.C.); (H.-F.C.); (S.-M.L.); (H.-C.L.)
| | - Han-Peng Kuo
- SynCore Biotechnology Co., Ltd., Sinphar Group, Yilan 269, Taiwan;
| | - Hsin-Wen Huang
- Sinphar Pharmaceutical Co., Ltd., Sinphar Group, Yilan 269, Taiwan; (C.-L.C.); (H.-W.H.); (M.-Y.C.); (H.-F.C.); (S.-M.L.); (H.-C.L.)
| | - Maw-Yeun Cheng
- Sinphar Pharmaceutical Co., Ltd., Sinphar Group, Yilan 269, Taiwan; (C.-L.C.); (H.-W.H.); (M.-Y.C.); (H.-F.C.); (S.-M.L.); (H.-C.L.)
| | - Hsin-Fan Chao
- Sinphar Pharmaceutical Co., Ltd., Sinphar Group, Yilan 269, Taiwan; (C.-L.C.); (H.-W.H.); (M.-Y.C.); (H.-F.C.); (S.-M.L.); (H.-C.L.)
| | - Shih-Min Lu
- Sinphar Pharmaceutical Co., Ltd., Sinphar Group, Yilan 269, Taiwan; (C.-L.C.); (H.-W.H.); (M.-Y.C.); (H.-F.C.); (S.-M.L.); (H.-C.L.)
| | - Hang-Ching Lin
- Sinphar Pharmaceutical Co., Ltd., Sinphar Group, Yilan 269, Taiwan; (C.-L.C.); (H.-W.H.); (M.-Y.C.); (H.-F.C.); (S.-M.L.); (H.-C.L.)
- School of Pharmacy, National Defense Medical Center, Taipei 114, Taiwan
| | - Chao-Jih Wang
- Sinphar Tian-Li Pharmaceutical Co., Ltd., Sinphar Group, Hangzhou 311100, China;
| | - Tsu-Chung Chang
- Department of Biochemistry, National Defense Medical Center, Taipei 114, Taiwan
| | - Chi-Rei Wu
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 404, Taiwan
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Mou CY, Zhang L, Zhao H, Huang ZP, Duan YL, Zhao ZM, Ke HY, Du J, Li Q, Zhou J. Single-nuclei RNA-seq reveals skin cell responses to Aeromonas hydrophila infection in Chinese longsnout catfish Leiocassis longirostris. Front Immunol 2023; 14:1271466. [PMID: 37908355 PMCID: PMC10613986 DOI: 10.3389/fimmu.2023.1271466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/25/2023] [Indexed: 11/02/2023] Open
Abstract
As the primary natural barrier that protects against adverse environmental conditions, the skin plays a crucial role in the innate immune response of fish, particularly in relation to bacterial infections. However, due to the diverse functionality and intricate anatomical and cellular composition of the skin, deciphering the immune response of the host is a challenging task. In this study, single nuclei RNA-sequencing (snRNA-seq) was performed on skin biopsies obtained from Chinese longsnout catfish (Leiocassis longirostris), comparing Aeromonas hydrophila-infected subjects to healthy control subjects. A total of 19,581 single nuclei cells were sequenced using 10x Genomics (10,400 in the control group and 9,181 in the treated group). Based on expressed unique transcriptional profiles, 33 cell clusters were identified and classified into 12 cell types including keratinocyte (KC), fibroblast (FB), endothelial cells (EC), secretory cells (SC), immune cells, smooth muscle cells (SMC), and other cells such as pericyte (PC), brush cell (BC), red blood cell (RBC), neuroendocrine cell (NDC), neuron cells (NC), and melanocyte (MC). Among these, three clusters of KCs, namely, KC1, KC2, and KC5 exhibited significant expansion after A. hydrophila infection. Analysis of pathway enrichment revealed that KC1 was primarily involved in environmental signal transduction, KC2 was primarily involved in endocrine function, and KC5 was primarily involved in metabolism. Finally, our findings suggest that neutrophils may play a crucial role in combating A. hydrophila infections. In summary, this study not only provides the first detailed comprehensive map of all cell types present in the skin of teleost fish but also sheds light on the immune response mechanism of the skin following A. hydrophila infection in Chinese longsnout catfish.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Qiang Li
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
| | - Jian Zhou
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, China
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Cui H, Feng C, Zhang T, Martínez-Ríos V, Martorell P, Tortajada M, Cheng S, Cheng S, Duan Z. Effects of a lotion containing probiotic ferment lysate as the main functional ingredient on enhancing skin barrier: a randomized, self-control study. Sci Rep 2023; 13:16879. [PMID: 37803101 PMCID: PMC10558477 DOI: 10.1038/s41598-023-43336-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 09/22/2023] [Indexed: 10/08/2023] Open
Abstract
There is an emergent need to develop functional cosmetic ingredients for the topical management of skin barrier function. This study aimed to investigate the efficacy of a lotion containing fermented lysates VHProbi® Mix R for enhancing the skin barrier. In vitro studies demonstrated that fermented cultures of both Lacticaseibacillus rhamnosus VHProbi® E06 (E06) and L. paracasei VHProbi® E12 (E12) had antioxidant capacity, showing promising scavenging capability for 2,2-diphenyl-1-picryl-hydrazyl. The antioxidant capacity of these strains was also demonstrated in the model of Caenorhabditis elegans. In addition, the fermented lysates of both E06 and E12 enhanced the proliferation of HaCaT cells and ameliorated the toxicity induced by Staphylococcus aureus ATCC 25923, hydrogen peroxide, and ultraviolet B radiation in the HaCaT cell models, which simulated the irritants that facial sensitive skin is exposed to. Subsequently, the ingredient VHProbi® Mix R was formulated using four kinds of fermented lysates: E06, E12, Lactiplantibacillus plantarum VHProbi® E15, and Lactobacillus helveticus VHProbi® Y21. A clinical study was conducted to investigate whether a lotion containing VHProbi® Mix R would be beneficial for people to enhance skin barrier. The participants were asked to use the investigational product for 30 days. Several indicators, including transepidermal water loss (TEWL), skin moisturization, and redness were measured at day 0 and day 30 using VISIA®-CR and CK®-MPA systems. Meanwhile, the burden of sensitive skin (BoSS) and self-assessment questionnaires were performed at baseline and endpoint of this study. The study data showed that at day 30, there was a significant decrease in TEWL (P < 0.01), redness measured by CK®-MPA (P < 0.01), and redness profile measured by VISIA®-CR compared with the baseline measurements. Skin moisturization had significantly increased after treatment with the lotion for 30 days. BoSS and self-assessment questionnaires also substantiated that the participants felt a markedly positive change in their sensitive skin. Hence, we hypothesize that applying the topical functional VHProbi® Mix R could confer effective benefits for people with sensitive skin and this represents a promising intervention for enhancing skin barrier.
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Affiliation(s)
- Hongchang Cui
- Qingdao Vland Biotech Co., Ltd., 596-1 Jiushui East Road, Laoshan District, Qingdao, 266102, China
| | - Congrui Feng
- Qingdao Vland Biotech Co., Ltd., 596-1 Jiushui East Road, Laoshan District, Qingdao, 266102, China
| | - Tao Zhang
- Qingdao Vland Biotech Co., Ltd., 596-1 Jiushui East Road, Laoshan District, Qingdao, 266102, China
| | - Verónica Martínez-Ríos
- ADM, Nutrition, Health and Wellness, Biopolis S.L., Parc Científic Universitat de València, C/ Catedrático Agustín Escardino Benlloch, 9, 46980, Paterna, Spain
| | - Patricia Martorell
- ADM, Nutrition, Health and Wellness, Biopolis S.L., Parc Científic Universitat de València, C/ Catedrático Agustín Escardino Benlloch, 9, 46980, Paterna, Spain
| | - Marta Tortajada
- ADM, Nutrition, Health and Wellness, Biopolis S.L., Parc Científic Universitat de València, C/ Catedrático Agustín Escardino Benlloch, 9, 46980, Paterna, Spain
| | - Sidao Cheng
- Qingdao Vland Biotech Co., Ltd., 596-1 Jiushui East Road, Laoshan District, Qingdao, 266102, China
| | - Shumin Cheng
- Qingdao Vland Biotech Co., Ltd., 596-1 Jiushui East Road, Laoshan District, Qingdao, 266102, China
| | - Zhi Duan
- Qingdao Vland Biotech Co., Ltd., 596-1 Jiushui East Road, Laoshan District, Qingdao, 266102, China.
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Van Oosterwyck R, Loos E, Willaert A. Otological problems in ichthyosis: A literature review. Int J Pediatr Otorhinolaryngol 2023; 173:111714. [PMID: 37714023 DOI: 10.1016/j.ijporl.2023.111714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 07/29/2023] [Accepted: 08/27/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Ichthyoses are a rare group of keratinization disorders characterized by scaling of the skin due to an impaired barrier function. Few studies have addressed ear involvement in patients with ichthyosis, although it is a probably underestimated aspect of the disease. OBJECTIVE This study aims to provide an overview of the otological manifestations in ichthyosis and propose specific treatment options. METHODS Articles were collected using PubMed, EMBASE, and Web of Science. A total of 53 articles were included in this literature review. RESULTS The most common ear problem in patients with ichthyosis is scale accumulation in the ear canals, which can lead to conductive hearing loss and increases the risk of ear infections. Furthermore, some types of ichthyosis are associated with outer ear malformations. Lastly, sensorineural hearing loss is common in syndromic forms of ichthyosis. CONCLUSIONS Otological problems are present in all types of ichthyoses and their treatment is challenging. The involvement of ear, nose, and throat specialists in the routine care of ichthyosis patients is essential for early identification and treatment of these manifestations. More research is needed to provide more insight into the otological problems in ichthyosis and to ameliorate treatment options.
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Affiliation(s)
- R Van Oosterwyck
- University Hospitals Leuven, Department of Otorhinolaryngology-Head and Neck Surgery, Herestraat 49, B-3000, Leuven, Belgium
| | - E Loos
- University Hospitals Leuven, Department of Otorhinolaryngology-Head and Neck Surgery, Herestraat 49, B-3000, Leuven, Belgium; KU Leuven, University of Leuven, Department of Neurosciences, Research Group ExpORL, Leuven, Belgium.
| | - A Willaert
- University Hospitals Leuven, Department of Otorhinolaryngology-Head and Neck Surgery, Herestraat 49, B-3000, Leuven, Belgium
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37
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Ahn M, Cho WW, Lee H, Park W, Lee SH, Back JW, Gao Q, Gao G, Cho DW, Kim BS. Engineering of Uniform Epidermal Layers via Sacrificial Gelatin Bioink-Assisted 3D Extrusion Bioprinting of Skin. Adv Healthc Mater 2023; 12:e2301015. [PMID: 37537366 DOI: 10.1002/adhm.202301015] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/19/2023] [Indexed: 08/05/2023]
Abstract
To reconstruct an ideal full-thickness skin model, basal keratinocytes must be distributed as a confluent monolayer on the dermis. However, the currently available extrusion bioprinting method for the skin is limited when producing an air-exposed cellular monolayer because the cells are encapsulated within a bioink. This is the first study to use sacrificial gelatin-assisted extrusion bioprinting to reproduce a uniform and stratified epidermal layer. Experimental analyses of the rheological properties, printability, cell viability, and initial keratinocyte adhesion shows that the optimal gelatin bioink concentration is 4 wt.%. The appropriate thickness of the bioprinted gelatin structure for achieving a confluent keratinocyte layer is determined to be 400 µm. The suggested strategy generates a uniform keratinocyte monolayer with tight junctions throughout the central and peripheral regions, whereas manual seeding generates non-uniform cellular aggregates and vacancies. These results influence gene expression, exhibiting a propensity for epidermal differentiation. Finally, the gelatin-assisted keratinocytes are bioprinted onto a dermis composed of gelatin methacryloyl and dermis-derived decellularized extracellular matrix to establish a full-thickness skin model. Thus, this strategy leads to significant improvements in epidermal differentiation/stratification. The findings demonstrate that the gelatin-assisted approach is advantageous for recreating reliable full-thickness skin models with significant consistency for mass production.
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Affiliation(s)
- Minjun Ahn
- Medical Research Institute, Pusan National University, Yangsan, 626841, Republic of Korea
| | - Won-Woo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Hanju Lee
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan, 626841, Republic of Korea
| | - Wonbin Park
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Seok-Hyeon Lee
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan, 626841, Republic of Korea
| | - Jae Woo Back
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan, 626841, Republic of Korea
| | - Qiqi Gao
- School of Medical Technology, Beijing Institute of Technology, Beijing, 100081, China
| | - Ge Gao
- School of Medical Technology, Beijing Institute of Technology, Beijing, 100081, China
| | - Dong-Woo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Byoung Soo Kim
- Medical Research Institute, Pusan National University, Yangsan, 626841, Republic of Korea
- School of Biomedical Convergence Engineering, Pusan National University, Yangsan, 626841, Republic of Korea
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38
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Telgenhoff D. Claudin-2 in hyperproliferative migrating keratinocytes and migration inhibition via siRNA knockdown. Anat Histol Embryol 2023; 52:723-731. [PMID: 37147871 DOI: 10.1111/ahe.12929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/07/2023] [Accepted: 04/17/2023] [Indexed: 05/07/2023]
Abstract
Claudin-2 is a tight junction protein found in various tissues including the epidermis of the skin. Intracellular signalling via claudin-2 may have an effect on cell proliferation and migration. While the role of claudin-2 in the epidermis has not been established, here we show an increase in claudin-2 expression in hyperproliferative archival skin samples. To further examine the role of claudin-2 in cell migration we examined its expression in cultured keratinocytes and found it was increased in wound margins in an in vitro scratch test assay. We then used a claudin-2 knockdown assay using small interfering ribonucleic acid (siRNA) with a 77% transfection efficiency and decrease in claudin-2 protein via Western blot analysis to examine cell migration, which was inhibited following claudin-2 knockdown over a 5-day period. Cells transfected with claudin-2 siRNA also showed a decreased size compared to controls and a more diffuse staining pattern. Lastly we examined claudin-2 expression in migrating keratinocytes by Western blot analysis and found a significant decrease in protein staining in scratch-test assay cultures after 4 h, followed by a significant increase in claudin-2 protein after 24 h. Taken together these results indicate a role for claudin-2 signalling in proliferation and cell migration in the epidermis of the skin.
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Affiliation(s)
- Dale Telgenhoff
- Clinical and Diagnostic Sciences, Oakland University, Rochester, Michigan, USA
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39
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Asoh T, Miyahara S, Villanueva SYAM, Kanemaru T, Takigawa T, Mori H, Gloriani NG, Yoshida SI, Saito M. Protective role of stratum corneum in percutaneous Leptospira infection in a hamster model. Microb Pathog 2023; 182:106243. [PMID: 37422175 DOI: 10.1016/j.micpath.2023.106243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/28/2023] [Accepted: 07/05/2023] [Indexed: 07/10/2023]
Abstract
Leptospira enters humans and animals through injured skin or mucous membranes by direct or indirect contact with urine excreted from infected reservoirs. Individuals with cut or scratched skin are at high risk of infection and are recommended to be protected from contact with Leptospira, but the risk of infection via skin without apparent wounds is unknown. We hypothesized that the stratum corneum of the epidermis might prevent percutaneous invasion of leptospires. We established a stratum corneum deficient model of hamsters using the tape stripping method. The mortality rate of hamsters lacking stratum corneum that were exposed to Leptospira was higher than that of controls with shaved skin, and was not significantly different from an epidermal wound group. These results indicated that the stratum corneum plays a critical role in protecting the host against leptospiral entry. We also examined the migration of leptospires through the monolayer of HaCaT cells (human keratinocyte cell line) using Transwell. The number of pathogenic leptospires penetrating the HaCaT cell monolayers was higher than that of non-pathogenic leptospires. Furthermore, scanning and transmission electron microscopic observations revealed that the bacteria penetrated the cell monolayers through both intracellular and intercellular routes. This suggested that pathogenic Leptospira can migrate easily through keratinocyte layers and is associated with virulence. Our study further highlights the importance of the stratum corneum as a critical barrier against the invasion of Leptospira found in contaminated soil and water. Hence, preventative measures against contact infection should be taken, even without visible skin wounds.
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Affiliation(s)
- Tatsuma Asoh
- Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka City, Fukuoka, Japan; Hamanomachi Hospital, Fukuoka City, Fukuoka, Japan
| | - Satoshi Miyahara
- Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka City, Fukuoka, Japan; Department of Microbiology, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu City, Fukuoka, Japan
| | - Sharon Yvette Angelina M Villanueva
- Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka City, Fukuoka, Japan; Department of Medical Microbiology, College of Public Health, University of the Philippines, Manila, Philippines
| | - Takaaki Kanemaru
- Department of Morphology Core Unit, Kyushu University Hospital, Fukuoka City, Fukuoka, Japan
| | - Tomoya Takigawa
- Department of Microbiology, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu City, Fukuoka, Japan; Department of Cardiovascular Surgery, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu City, Fukuoka, Japan
| | - Hiroshi Mori
- Department of Microbiology, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu City, Fukuoka, Japan; Department of Obstetrics and Gynecology, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu City, Fukuoka, Japan
| | - Nina G Gloriani
- Department of Medical Microbiology, College of Public Health, University of the Philippines, Manila, Philippines; Department of Pathology, St. Luke's Medical Center, Quezon City, Philippines
| | - Shin-Ichi Yoshida
- Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka City, Fukuoka, Japan
| | - Mitsumasa Saito
- Department of Bacteriology, Graduate School of Medical Sciences, Kyushu University, Fukuoka City, Fukuoka, Japan; Department of Microbiology, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu City, Fukuoka, Japan.
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40
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Hayashi K, Nozaki S, Tokushima K, Tanaka F, Hirai Y. Role of syntaxin3 an apical polarity protein in poorly polarized keratinocytes: regulation of asymmetric barrier formations in the skin epidermis. Cell Tissue Res 2023; 393:523-535. [PMID: 37351635 DOI: 10.1007/s00441-023-03798-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 06/13/2023] [Indexed: 06/24/2023]
Abstract
The skin epidermis exhibits an asymmetric structure composed of multilayered keratinocytes and those in the outer layers form two-way physical barriers, cornified cell envelope (CCE), and tight junctions (TJs). While undifferentiated keratinocytes in the basal layer continuously deliver daughter cells outward, which undergo successive differentiation with losing their polarized characteristics, they retain the expression of several polarity proteins. In the present study, we revealed that the t-SNARE protein syntaxin3, a critical element for the formation of the apical compartment in simple epithelial cells, is required to confer the ability to organize the physical barriers on "poorly polarized" keratinocytes in epidermal outer layers. HaCaT keratinocytes with genetic ablation of syntaxin3 readily succumbed to hydrogen peroxide-induced cell death. Additionally, they lost the ability to organize TJ and CCE structures, accompanied by notable downregulation of transglutaminase1 and caspase14 (a cornification regulator) expression. These syntaxin3-knockout cells appeared to restore oxidative stress tolerance and functional TJ formation ability, in response to the inducible re-expression of exogenous syntaxin3. While plausible mechanisms underlying these phenomena remain unclear, syntaxin3, an apical polarity protein in the simple epithelia, has emerged as a potentially crucial element for barrier formation in poorly polarized keratinocytes in polarized epidermal tissue.
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Affiliation(s)
- Kaho Hayashi
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University, Gakuen-Uegahara, Sanda, 669-1330, Japan
| | - Sae Nozaki
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University, Gakuen-Uegahara, Sanda, 669-1330, Japan
| | - Kanako Tokushima
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University, Gakuen-Uegahara, Sanda, 669-1330, Japan
| | - Fumika Tanaka
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University, Gakuen-Uegahara, Sanda, 669-1330, Japan
| | - Yohei Hirai
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University, Gakuen-Uegahara, Sanda, 669-1330, Japan.
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41
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Wennberg C, Lundborg M, Lindahl E, Norlén L. Understanding Drug Skin Permeation Enhancers Using Molecular Dynamics Simulations. J Chem Inf Model 2023; 63:4900-4911. [PMID: 37462219 PMCID: PMC10428223 DOI: 10.1021/acs.jcim.3c00625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Indexed: 08/15/2023]
Abstract
Our skin constitutes an effective permeability barrier that protects the body from exogenous substances but concomitantly severely limits the number of pharmaceutical drugs that can be delivered transdermally. In topical formulation design, chemical permeation enhancers (PEs) are used to increase drug skin permeability. In vitro skin permeability experiments can measure net effects of PEs on transdermal drug transport, but they cannot explain the molecular mechanisms of interactions between drugs, permeation enhancers, and skin structure, which limits the possibility to rationally design better new drug formulations. Here we investigate the effect of the PEs water, lauric acid, geraniol, stearic acid, thymol, ethanol, oleic acid, and eucalyptol on the transdermal transport of metronidazole, caffeine, and naproxen. We use atomistic molecular dynamics (MD) simulations in combination with developed molecular models to calculate the free energy difference between 11 PE-containing formulations and the skin's barrier structure. We then utilize the results to calculate the final concentration of PEs in skin. We obtain an RMSE of 0.58 log units for calculated partition coefficients from water into the barrier structure. We then use the modified PE-containing barrier structure to calculate the PEs' permeability enhancement ratios (ERs) on transdermal metronidazole, caffeine, and naproxen transport and compare with the results obtained from in vitro experiments. We show that MD simulations are able to reproduce rankings based on ERs. However, strict quantitative correlation with experimental data needs further refinement, which is complicated by significant deviations between different measurements. Finally, we propose a model for how to use calculations of the potential of mean force of drugs across the skin's barrier structure in a topical formulation design.
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Affiliation(s)
| | - Magnus Lundborg
- Science
for Life Laboratory, ERCO Pharma AB, 171 65 Solna, Sweden
| | - Erik Lindahl
- Department
of Biophysics and Biochemistry, Stockholm
University, 106 91 Stockholm, Sweden
- Department
of Applied Physics, Swedish e-Science Research Center, KTH Royal Institute of Technology, 106 91 Stockholm, Sweden
| | - Lars Norlén
- Department
of Cell and Molecular Biology (CMB), Karolinska
Institutet, 171 77 Solna, Sweden
- Dermatology
Clinic. Karolinska University Hospital, 171 77 Solna, Sweden
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42
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Nădăban A, Rousel J, El Yachioui D, Gooris GS, Beddoes CM, Dalgliesh RM, Malfois M, Rissmann R, Bouwstra JA. Effect of sphingosine and phytosphingosine ceramide ratio on lipid arrangement and barrier function in skin lipid models. J Lipid Res 2023; 64:100400. [PMID: 37301511 PMCID: PMC10457584 DOI: 10.1016/j.jlr.2023.100400] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/15/2023] [Accepted: 06/06/2023] [Indexed: 06/12/2023] Open
Abstract
The lipids in the uppermost layer of the skin, the stratum corneum (SC), play an important role in the skin barrier function. The three main subclasses in the SC lipid matrix are ceramides (CER), cholesterol, and free fatty acids. In inflammatory skin diseases, such as atopic dermatitis and psoriasis, the SC lipid composition is modulated compared to the composition in healthy SC. One of the main alterations is the molar ratio between the concentration of CER N-(tetracosanoyl)-sphingosine (CER NS) and CER N-(tetracosanoyl)-phytosphingosine (CER NP), which correlated with an impaired skin barrier function. In the present study, we investigated the impact of varying the CER NS:CER NP ratios on the lipid organization, lipid arrangement, and barrier functionality in SC lipid model systems. The results indicate that a higher CER NS:CER NP ratio as observed in diseased skin did not alter the lipid organization or lipid arrangement in the long periodicity phase encountered in SC. The trans-epidermal water loss, an indication of the barrier functionality, was significantly higher for the CER NS:CER NP 2:1 model (mimicking the ratio in inflammatory skin diseases) compared to the CER NS:CER NP 1:2 ratio (in healthy skin). These findings provide a more detailed insight into the lipid organization in both healthy and diseased skin and suggest that in vivo the molar ratio between CER NS:CER NP contributes to barrier impairment as well but might not be the main factor.
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Affiliation(s)
- Andreea Nădăban
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Jannik Rousel
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands; Centre for Human Drug Research, Leiden, The Netherlands
| | - Dounia El Yachioui
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Gerrit S Gooris
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Charlotte M Beddoes
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Robert M Dalgliesh
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, United Kingdom
| | | | - Robert Rissmann
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands; Centre for Human Drug Research, Leiden, The Netherlands; Leiden University Medical Center, Leiden, The Netherlands
| | - Joke A Bouwstra
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.
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43
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Vilela de Sousa I, Ferreira MJS, Bebiano LB, Simões S, Matos AF, Pereira RF, Granja PL. Skin models of cutaneous toxicity, transdermal transport and wound repair. BURNS & TRAUMA 2023; 11:tkad014. [PMID: 37520659 PMCID: PMC10382248 DOI: 10.1093/burnst/tkad014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/09/2023] [Accepted: 03/02/2023] [Indexed: 08/01/2023]
Abstract
Skin is widely used as a drug delivery route due to its easy access and the possibility of using relatively painless methods for the administration of bioactive molecules. However, the barrier properties of the skin, along with its multilayer structure, impose severe restrictions on drug transport and bioavailability. Thus, bioengineered models aimed at emulating the skin have been developed not only for optimizing the transdermal transport of different drugs and testing the safety and toxicity of substances but also for understanding the biological processes behind skin wounds. Even though in vivo research is often preferred to study biological processes involving the skin, in vitro and ex vivo strategies have been gaining increasing relevance in recent years. Indeed, there is a noticeably increasing adoption of in vitro and ex vivo methods by internationally accepted guidelines. Furthermore, microfluidic organ-on-a-chip devices are nowadays emerging as valuable tools for functional and behavioural skin emulation. Challenges in miniaturization, automation and reliability still need to be addressed in order to create skin models that can predict skin behaviour in a robust, high-throughput manner, while being compliant with regulatory issues, standards and guidelines. In this review, skin models for transdermal transport, wound repair and cutaneous toxicity will be discussed with a focus on high-throughput strategies. Novel microfluidic strategies driven by advancements in microfabrication technologies will also be revised as a way to improve the efficiency of existing models, both in terms of complexity and throughput.
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Affiliation(s)
| | | | - Luís B Bebiano
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
- ISEP - Instituto Superior de Engenharia do Porto, Universidade do Porto, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal
| | - Sandra Simões
- iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Ana Filipa Matos
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Rúben F Pereira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal
- INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
- ICBAS – Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
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Segarra S, Sanmiguel D, Zuriaga E, Leclerc S, Cabañas J, Seigneuric E, Miquel A, Vázquez A, Ferrer L. Sphingomyelin-Rich Lipid Extract Collar for Canine Atopic Dermatitis. Vet Sci 2023; 10:389. [PMID: 37368775 DOI: 10.3390/vetsci10060389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/01/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
The management of canine atopic dermatitis (CAD) is complex, and it needs to be multimodal, combining topical and systemic therapies. Given that the currently available options are not always totally effective and might have some associated adverse effects, novel alternatives are needed. For this reason, a new collar for CAD was developed with 2.5% of a sphingomyelin-rich lipid extract (LE) with proven benefits for skin health. The release of the active ingredient when incorporated into the collar was tested in vitro, showing an adequate kinetic profile. Then, the efficacy and safety of the collar were assessed in 12 client-owned dogs with CAD in a pilot study. After eight weeks, the dogs experienced significant clinical improvements on the Canine Atopic Dermatitis Extent and Severity Index (CADESI)-4, Pruritus Index for Canine Atopic Dermatitis (PCAD) and Pruritus Visual Analogue Scale (PVAS) scores, without any adverse effects. Additionally, further in vitro studies were performed, indicating that this LE collar should be compatible with antiparasitic collars (with deltamethrin or imidacloprid/flumethrin) if worn simultaneously. Given the observed benefits of this LE collar, combining it with other CAD therapies could potentially allow for drug sparing, reduction in adverse effects, enhanced owner compliance, and reduced treatment costs.
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Affiliation(s)
- Sergi Segarra
- R&D Bioiberica S.A.U., Avinguda dels Països Catalans, 34, 08950 Esplugues de Llobregat, Spain
| | - David Sanmiguel
- Clínica Veterinaria Wecan De Carreres, Avinguda Mutxamel, 1, Local 2, 03550 Sant Joan d'Alacant, Spain
| | - Eliseo Zuriaga
- Hospital Veterinario Global, Carrer Laminacio, 18, 46520 Port de Sagunt, Spain
| | | | - Jesús Cabañas
- R&D Bioiberica S.A.U., Avinguda dels Països Catalans, 34, 08950 Esplugues de Llobregat, Spain
| | | | | | - Ana Vázquez
- Servei d'Estadística Aplicada, Facultat de Ciències, Universitat Autònoma de Barcelona, C5b/111, Edifici C, 08193 Cerdanyola del Vallès, Spain
| | - Lluís Ferrer
- Departament de Medicina i Cirurgia Animals, S/N, Campus Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Spain
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45
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Mouth proximity influences perceived disgust of visual stimuli. PERSONALITY AND INDIVIDUAL DIFFERENCES 2023. [DOI: 10.1016/j.paid.2023.112146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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46
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Brash AR, Noguchi S, Boeglin WE, Calcutt MW, Stec DF, Schneider C, Meyer JM. Two C18 hydroxy-cyclohexenone fatty acids from mammalian epidermis: Potential relation to 12R-lipoxygenase and covalent binding of ceramides. J Biol Chem 2023; 299:104739. [PMID: 37086788 PMCID: PMC10209020 DOI: 10.1016/j.jbc.2023.104739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/11/2023] [Accepted: 04/15/2023] [Indexed: 04/24/2023] Open
Abstract
A key requirement in forming the water permeability barrier in the mammalian epidermis is the oxidation of linoleate esterified in a skin-specific acylceramide by the sequential actions of 12R-lipoxygenase, epidermal lipoxygenase-3, and the epoxyalcohol dehydrogenase SDR9C7 (short-chain dehydrogenase-reductase family 7 member 9). By mechanisms that remain unclear, this oxidation pathway promotes the covalent binding of ceramides to protein, forming a critical structure of the epidermal barrier, the corneocyte lipid envelope. Here, we detected, in porcine, mouse, and human epidermis, two novel fatty acid derivatives formed by KOH treatment from precursors covalently bound to protein: a "polar" lipid chromatographing on normal-phase HPLC just before omega-hydroxy ceramide and a "less polar" lipid nearer the solvent front. Approximately 100 μg of the novel lipids were isolated from porcine epidermis, and the structures were established by UV-spectroscopy, LC-MS, GC-MS, and NMR. Each is a C18 fatty acid and hydroxy-cyclohexenone with the ring on carbons C9-C14 in the polar lipid and C8-C13 in the less polar lipid. Overnight culture of [14C]linoleic acid with whole mouse skin ex vivo led to recovery of the 14C-labeled hydroxy-cyclohexenones. We deduce they are formed from covalently bound precursors during the KOH treatment used to release esterified lipids. KOH-induced intramolecular aldol reactions from a common precursor can account for their formation. Discovery of these hydroxy-cyclohexenones presents an opportunity for a reverse pathway analysis, namely to work back from these structures to identify their covalently bound precursors and relationship to the linoleate oxidation pathway.
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Affiliation(s)
- Alan R Brash
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
| | - Saori Noguchi
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - William E Boeglin
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - M Wade Calcutt
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Donald F Stec
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, USA
| | - Claus Schneider
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Jason M Meyer
- Department of Dermatology, Vanderbilt University Medical Center, and Dermatology Service, Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, USA
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47
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Yang C, Zhang Q, Ma C, Huang Y, Ding HX, Lu JW, Wang J, Li X, Zhong YH, Li ZQ. Characteristics and management of tumor treating fields-related dermatological complications in patients with glioblastoma. Medicine (Baltimore) 2023; 102:e33830. [PMID: 37335714 PMCID: PMC10194479 DOI: 10.1097/md.0000000000033830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/26/2023] [Indexed: 06/21/2023] Open
Abstract
Tumor treating fields (TTFields) is a novel approved modality for the treatment of glioblastoma (GBM) exhibiting a satisfactory effect. Although TTFields has shown considerable safety for the normal brain, dermatological adverse events (DAEs) often occur during therapy. However, studies focused on the identification and management of DAEs are rare. The clinical data and photos of skin lesions from 9 patients with GBM were retrospectively analyzed, and the types and grades of individual scalp dermatitis were evaluated based on the Common Terminology Criteria for Adverse Events version 5.0 (CTCAE v 5.0). Adherence and safety were also evaluated on the basis of the device monitoring data. Eight patients (88.9%) exhibited grade 1 or grade 2 CTCAE DAEs, all of whom were cured after interventions. The adherence was >90%, with no relevant safety events reported. Finally, a guideline for preventing DAEs in patients with GBM was proposed. The identification and management of TTFields-related DAEs is necessary and urgent in patients with GBM. Timely interventions of DAEs will help to improve the adherence and quality of life of patients, which ultimately improves prognosis. The proposed guideline for preventing DAEs in patients with GBM assists in the management of healthcare providers and may avoid dermatologic complications.
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Affiliation(s)
- Chao Yang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Qing Zhang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Chao Ma
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yong Huang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hai-Xia Ding
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jun-Wei Lu
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jie Wang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiang Li
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ya-Hua Zhong
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhi-Qiang Li
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
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48
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Polito MP, Marini G, Palamenghi M, Enzo E. Decoding the Human Epidermal Complexity at Single-Cell Resolution. Int J Mol Sci 2023; 24:ijms24108544. [PMID: 37239891 DOI: 10.3390/ijms24108544] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 04/27/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
The epidermis is one of the largest tissues in the human body, serving as a protective barrier. The basal layer of the epidermis, which consists of epithelial stem cells and transient amplifying progenitors, represents its proliferative compartment. As keratinocytes migrate from the basal layer to the skin surface, they exit the cell cycle and initiate terminal differentiation, ultimately generating the suprabasal epidermal layers. A deeper understanding of the molecular mechanisms and pathways driving keratinocytes' organization and regeneration is essential for successful therapeutic approaches. Single-cell techniques are valuable tools for studying molecular heterogeneity. The high-resolution characterization obtained with these technologies has identified disease-specific drivers and new therapeutic targets, further promoting the advancement of personalized therapies. This review summarizes the latest findings on the transcriptomic and epigenetic profiling of human epidermal cells, analyzed from human biopsy or after in vitro cultivation, focusing on physiological, wound healing, and inflammatory skin conditions.
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Affiliation(s)
- Maria Pia Polito
- Centre for Regenerative Medicine ''Stefano Ferrari'', University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Grazia Marini
- Centre for Regenerative Medicine ''Stefano Ferrari'', University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Michele Palamenghi
- Centre for Regenerative Medicine ''Stefano Ferrari'', University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Elena Enzo
- Centre for Regenerative Medicine ''Stefano Ferrari'', University of Modena and Reggio Emilia, 41125 Modena, Italy
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Toriyama M, Rizaldy D, Nakamura M, Atsumi Y, Toriyama M, Fujita F, Okada F, Morita A, Itoh H, Ishii KJ. Dendritic cell proliferation by primary cilium in atopic dermatitis. Front Mol Biosci 2023; 10:1149828. [PMID: 37179569 PMCID: PMC10169737 DOI: 10.3389/fmolb.2023.1149828] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/04/2023] [Indexed: 05/15/2023] Open
Abstract
Introduction: Atopic dermatitis (AD) is a common allergic eczema that affects up to 10% of adults in developed countries. Immune cells in the epidermis, namely, Langerhans cells (LCs), contribute to the pathogenesis of AD, although their exact role(s) in disease remain unclear. Methods: We performed immunostaining on human skin and peripheral blood mononuclear cells (PBMCs) and visualized primary cilium. Result and discussion: We show that human dendritic cells (DCs) and LCs have a previously unknown primary cilium-like structure. The primary cilium was assembled during DC proliferation in response to the Th2 cytokine GM-CSF, and its formation was halted by DC maturation agents. This suggests that the role of primary cilium is to transduce proliferation signaling. The platelet-derived growth factor receptor alpha (PDGFRα) pathway, which is known for transducing proliferation signals in the primary cilium, promoted DC proliferation in a manner dependent on the intraflagellar transport (IFT) system. We also examined the epidermal samples from AD patients, and observed aberrantly ciliated LCs and keratinocytes in immature and proliferating states. Our results identify a potential relationship between the primary cilium and allergic skin barrier disorders, and suggest that targeting the primary cilium may contribute to treating AD.
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Affiliation(s)
- Manami Toriyama
- Graduate School of Pharmacological Sciences, Osaka University, Osaka, Japan
- Center for Vaccine and Adjuvant Research (CVAR), National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
- Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara, Japan
| | - Defri Rizaldy
- Graduate School of Pharmacological Sciences, Osaka University, Osaka, Japan
- Center for Vaccine and Adjuvant Research (CVAR), National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
- School of Pharmacy, Institut Teknologi Bandung, Bandung, Indonesia
| | - Motoki Nakamura
- Graduate School of Pharmacological Sciences, Osaka University, Osaka, Japan
- Department of Geriatric and Environmental Dermatology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Yukiko Atsumi
- Graduate School of Pharmacological Sciences, Osaka University, Osaka, Japan
- Center for Vaccine and Adjuvant Research (CVAR), National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Michinori Toriyama
- School of Biological and Environmental Sciences, Kwansei Gakuin University, Hyogo, Japan
| | - Fumitaka Fujita
- Graduate School of Pharmacological Sciences, Osaka University, Osaka, Japan
- Center for Vaccine and Adjuvant Research (CVAR), National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
- Mandom Corporation, Osaka, Japan
| | - Fumihiro Okada
- Graduate School of Pharmacological Sciences, Osaka University, Osaka, Japan
- Mandom Corporation, Osaka, Japan
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan
| | - Hiroshi Itoh
- Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara, Japan
| | - Ken J. Ishii
- Center for Vaccine and Adjuvant Research (CVAR), National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
- Division of Vaccine Science, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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50
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Sassa T, Kihara A. Involvement of ω-O-acylceramides and protein-bound ceramides in oral permeability barrier formation. Cell Rep 2023; 42:112363. [PMID: 37054712 DOI: 10.1016/j.celrep.2023.112363] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 01/23/2023] [Accepted: 03/21/2023] [Indexed: 04/15/2023] Open
Abstract
The permeability barrier present in the oral cavity is critical for protection from infection. Although lipids have properties suitable for permeability barrier formation, little is known about their role in oral barrier formation. Here, we show the presence of ω-O-acylceramides (acylceramides) and protein-bound ceramides, which are essential for the formation of permeability barriers in the epidermis, in the oral mucosae (buccal and tongue mucosae), esophagus, and stomach in mice. Conditional knockout of the fatty acid elongase Elovl1, which is involved in the synthesis of ≥C24 ceramides including acylceramides and protein-bound ceramides, in the oral mucosae and esophagus causes increased pigment penetration into the mucosal epithelium of the tongue and enhanced aversive responses to capsaicin-containing water. We find acylceramides in the buccal and gingival mucosae and protein-bound ceramides in the gingival mucosa in humans. These results indicate that acylceramides and protein-bound ceramides are important for oral permeability barrier formation.
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Affiliation(s)
- Takayuki Sassa
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Akio Kihara
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
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