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Barbosa YGDS, Santos-Oliveira R, Alencar LMR, Ladd FVL, da Silva FL, do Nascimento AGS, da Rocha Neto HJ, Freitas RICD, Carvalho MAMD, Neto NMA. Exploring the epidermal architecture of Dasyprocta prymnolopha: A potential dermatology research model. Tissue Cell 2024; 90:102500. [PMID: 39178578 DOI: 10.1016/j.tice.2024.102500] [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: 03/30/2024] [Revised: 07/15/2024] [Accepted: 07/26/2024] [Indexed: 08/26/2024]
Abstract
The agouti (Dasyprocta prymnolopha) is a medium-sized, wild rodent that is highly rustic and docile. Its size and ease of management make it a viable candidate for an alternative animal model to traditional murine subjects. However, data on the epidermal strata of agoutis are lacking, with significant uncertainties persisting regarding their skin's characterization. This study aimed to describe and quantify the epidermal strata of skin biopsies from male and female agoutis raised in captivity, to further validate the species as a model for dermatological research. Ultrastructural evaluations through atomic force microscopy (AFM) and stereological analyses were conducted, revealing significant differences between the layers of the skin; notably, the dermis exhibited a greater total volume than the epidermis. The findings suggest that the epidermal strata are well-defined, with the volume likely correlating to the size and cellular density of the keratinocytes. Corneodesmosomes and tonofilaments were identified across all epidermal layers, indicating the probable maintenance of anchoring protein activity, even post-cornification of these cells. These results suggest that the agouti may serve as a promising model for dermatological studies, owing to the homogeneity of its cutaneous tissue across different body regions and the distinct volume and morphology of its epithelial stratification, which could enhance the applicability of systematic investigative methods in the future.
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Affiliation(s)
| | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Rio de Janeiro 21941906, Brazil; Rio de Janeiro State University, Laboratory of Nanoradiopharmacy, Rio de Janeiro 23070200, Brazil.
| | - Luciana Magalhães Rebelo Alencar
- Federal University of Maranhão, Department of Physics, Laboratory of Biophysics and Nanosystems, Campus Bacanga, São Luís, Maranhão 65080-805, Brazil
| | - Fernando Vagner Lobo Ladd
- Programa de Pós-gaduação em Biologia Estrutural e Funcional, Universidade Federal do Rio Grande do Norte, Brazil
| | - Fabiane Leite da Silva
- Programa de Pós-graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina 64049-550, Brazil
| | - Ana Gabriellen Souza do Nascimento
- Programa de Pós-graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina 64049-550, Brazil
| | - Hermínio José da Rocha Neto
- Programa de Pós-graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina 64049-550, Brazil
| | | | - Maria Acelina Martins de Carvalho
- Programa de Pós-graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina 64049-550, Brazil; Universidade Federal do Piauí, graduação em medicina veterinária, Teresina 64049-550, Brazil; Núcleo Integrado de Morfologia e Pesquisas com Células-tronco, Universidade Federal do Piauí, Teresina 64049-550, Brazil
| | - Napoleão Martins Argôlo Neto
- Programa de Pós-graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina 64049-550, Brazil; Universidade Federal do Piauí, graduação em medicina veterinária, Teresina 64049-550, Brazil; Núcleo Integrado de Morfologia e Pesquisas com Células-tronco, Universidade Federal do Piauí, Teresina 64049-550, Brazil.
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2
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Karagöz Girişgen D, Zeynep Atay N, Yalçin ÖC, Öztürk EM. Ceramide 3 Effect on the Physical Properties of Ambora Extract and Chromabright-Loaded Transethosomes. ACS OMEGA 2024; 9:38044-38053. [PMID: 39281937 PMCID: PMC11391439 DOI: 10.1021/acsomega.4c04992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 08/22/2024] [Accepted: 08/23/2024] [Indexed: 09/18/2024]
Abstract
Spontaneous self-assembly of phospholipids into lipid vesicles in aqueous media is called liposomes, and these structures are widely used as nanocarriers in the cosmeceutical industry. Transethosomes are ethanol and edge activator-containing liposomes that are proven to be very effective in topical applications for penetrating the skin barrier. Many cosmeceutical products contain formulations with ceramides to restore the skin barrier and treat eczema. However, due to the low solubility and penetration ability of the ceramides, the effectiveness of these products is limited. In this study, a transethosome formulation containing ceramide 3 (Cer 3) was achieved by introducing varying concentrations of cholesterol and an edge activator (Tween 80) to improve the effect of the skin products used to treat eczema. The obtained transethosomes were examined in terms of size, homogeneity, zeta potential, morphology, and one-month stability. Loading capability experiments were carried out with lipophilic Chromabright and hydrophilic Ambora extract. The effect of Cer 3 on the loading of the selected payloads was evaluated. Data were analyzed statistically with linear regression analysis and two-way analysis of variance. The results showed that the inclusion of Cer 3 had almost no effect on the physical properties of the loaded or empty transethosomes. Independently of the presence of Cer 3, loading of the lipophilic compound was more efficient than that of the hydrophilic one.
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Affiliation(s)
- Derya Karagöz Girişgen
- Department of Chemistry, Institute for Graduate Science and Engineering, Boğaziçi University, Istanbul 34342, Turkey
| | - Naz Zeynep Atay
- Department of Chemistry, Faculty of Arts and Sciences, Boğaziçi University, Istanbul 34342, Turkey
| | - Özge Ceren Yalçin
- Department of Chemistry, Faculty of Arts and Sciences, Boğaziçi University, Istanbul 34342, Turkey
| | - Elif Mey Öztürk
- Department of Chemistry, Faculty of Arts and Sciences, Boğaziçi University, Istanbul 34342, Turkey
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3
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Oliveira LR, Pinheiro MR, Tuchina DK, Timoshina PA, Carvalho MI, Oliveira LM. Light in evaluation of molecular diffusion in tissues: Discrimination of pathologies. Adv Drug Deliv Rev 2024; 212:115420. [PMID: 39096937 DOI: 10.1016/j.addr.2024.115420] [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: 05/22/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/05/2024]
Abstract
The evaluation of the diffusion properties of different molecules in tissues is a subject of great interest in various fields, such as dermatology/cosmetology, clinical medicine, implantology and food preservation. In this review, a discussion of recent studies that used kinetic spectroscopy measurements to evaluate such diffusion properties in various tissues is made. By immersing ex vivo tissues in agents or by topical application of those agents in vivo, their diffusion properties can be evaluated by kinetic collimated transmittance or diffuse reflectance spectroscopy. Using this method, recent studies were able to discriminate the diffusion properties of agents between healthy and diseased tissues, especially in the cases of cancer and diabetes mellitus. In the case of cancer, it was also possible to evaluate an increase of 5% in the mobile water content from the healthy to the cancerous colorectal and kidney tissues. Considering the application of some agents to living organisms or food products to protect them from deterioration during low temperature preservation (cryopreservation), and knowing that such agent inclusion may be reversed, some studies in these fields are also discussed. Considering the broadband application of the optical spectroscopy evaluation of the diffusion properties of agents in tissues and the physiological diagnostic data that such method can acquire, further studies concerning the optimization of fruit sweetness or evaluation of poison diffusion in tissues or antidote application for treatment optimization purposes are indicated as future perspectives.
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Affiliation(s)
- Luís R Oliveira
- Department of Public and Environmental Health, Polytechnic of Porto - School of Health (ESS), Porto, Portugal
| | - Maria R Pinheiro
- Institute for Systems and Computer Engineering, Technology and Science (INESC TEC), Porto, Portugal
| | - Daria K Tuchina
- Institute of Physics and Science Medical Center, Saratov State University, Saratov, Russian Federation; Laboratory of Laser Molecular Imaging and Machine Learning, Tomsk State University, Tomsk, Russian Federation
| | - Polina A Timoshina
- Institute of Physics and Science Medical Center, Saratov State University, Saratov, Russian Federation; Laboratory of Laser Molecular Imaging and Machine Learning, Tomsk State University, Tomsk, Russian Federation; Lomonosov Moscow State University, Moscow, Russian Federation
| | - Maria I Carvalho
- Institute for Systems and Computer Engineering, Technology and Science (INESC TEC), Porto, Portugal; Department of Electrical and Computer Engineering, Porto University - Faculty of Engineering, Porto, Portugal
| | - Luís M Oliveira
- Institute for Systems and Computer Engineering, Technology and Science (INESC TEC), Porto, Portugal; Physics Department, Polytechnic of Porto - School of Engineering (ISEP), Porto, Portugal.
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4
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Mijaljica D, Townley JP, Spada F, Harrison IP. The heterogeneity and complexity of skin surface lipids in human skin health and disease. Prog Lipid Res 2024; 93:101264. [PMID: 37940006 DOI: 10.1016/j.plipres.2023.101264] [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: 07/07/2023] [Revised: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 11/10/2023]
Abstract
The outermost epidermal layer of the skin, the stratum corneum, is not simply a barrier that safeguards skin integrity from external insults and invaders, it is also a delicately integrated interface composed of firm, essentially dead corneocytes and a distinctive lipid matrix. Together, the stratum corneum lipid matrix and sebum lipids derived from sebaceous glands give rise to a remarkably complex but quite unique blend of skin surface lipids that demonstrates tremendous heterogeneity and provides the skin with its indispensable protective coating. The stratum corneum lipid matrix is composed primarily of three major lipid classes: ceramides, non-esterified fatty acids and cholesterol, whereas sebum is a waxy mixture predominantly composed of acylglycerols, wax esters, non-esterified fatty acids, squalene, cholesterol and cholesterol esters. The balance of these skin surface lipids in terms of their relative abundance, composition, molecular organisation and dynamics, and their intricate interactions play a crucial role in the maintenance of healthy skin. For that reason, even minuscule alterations in skin surface lipid properties or overall lipid profile have been implicated in the aetiology of many common skin diseases including atopic dermatitis, psoriasis, xerosis, ichthyosis and acne. Novel lipid-based interventions aimed at correcting the skin surface lipid abnormalities have the potential to repair skin barrier integrity and the symptoms associated with such skin diseases, even though the exact mechanisms of lipid restoration remain elusive.
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Affiliation(s)
- Dalibor Mijaljica
- Department of Scientific Affairs, Ego Pharmaceuticals Pty Ltd, 21-31 Malcolm Road, Braeside, Victoria 3195, Australia.
| | - Joshua P Townley
- Department of Scientific Affairs, Ego Pharmaceuticals Pty Ltd, 21-31 Malcolm Road, Braeside, Victoria 3195, Australia.
| | - Fabrizio Spada
- Department of Scientific Affairs, Ego Pharmaceuticals Pty Ltd, 21-31 Malcolm Road, Braeside, Victoria 3195, Australia.
| | - Ian P Harrison
- Department of Scientific Affairs, Ego Pharmaceuticals Pty Ltd, 21-31 Malcolm Road, Braeside, Victoria 3195, Australia.
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5
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Şahin Bektay H, Sağıroğlu AA, Bozali K, Güler EM, Güngör S. The Design and Optimization of Ceramide NP-Loaded Liposomes to Restore the Skin Barrier. Pharmaceutics 2023; 15:2685. [PMID: 38140026 PMCID: PMC10747297 DOI: 10.3390/pharmaceutics15122685] [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: 09/12/2023] [Revised: 10/08/2023] [Accepted: 10/25/2023] [Indexed: 12/24/2023] Open
Abstract
The impairment of skin integrity derived from derangement of the orthorhombic lateral organization is mainly caused by dysregulation of ceramide amounts in the skin barrier. Ceramides, fatty acids, and cholesterol-containing nano-based formulations have been used to impair the skin barrier. However, there is still a challenge to formulate novel formulations consisting of ceramides due to their chemical structure, poor aqueous solubility, and high molecular weight. In this study, the design and optimization of Ceramide 3 (CER-NP)-loaded liposomes are implemented based on response surface methodology (RSM). The optimum CER-NP-loaded liposome was selected based on its particle size (PS) and polydispersity index (PDI). The optimum CER-NP-loaded liposome was imagined by observing the encapsulation by using a confocal laser scanning microscope (CLSM) within fluorescently labeled CER-NP. The characteristic liquid crystalline phase and lipid chain conformation of CER-NP-loaded liposomes were determined using attenuated total reflectance infrared spectroscopy (ATR-IR). The CER-NP-loaded liposomes were imagined using a field emission scanning electron microscope (FE-SEM). Finally, the in vitro release of CER-NP from liposomes was examined using modified Franz Cells. The experimental and predicted results were well correlated. The CLSM images of optimized liposomes were conformable with the other studies, and the encapsulation efficiency of CER-NP was 93.84 ± 0.87%. ATR-IR analysis supported the characteristics of the CER-NP-loaded liposome. In addition, the lipid chain conformation shows similarity with skin barrier lipid organization. The release pattern of CER-NP liposomes was fitted with the Korsmeyer-Peppas model. The cytotoxicity studies carried out on HaCaT keratinocytes supported the idea that the liposomes for topical administration of CER-NP could be considered relatively safe. In conclusion, the optimized CER-NP-loaded liposomes could have the potential to restore the skin barrier function.
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Affiliation(s)
- Hümeyra Şahin Bektay
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34116, Türkiye
- Health Science Institute, Istanbul University, Istanbul 34126, Türkiye
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Bezmialem Vakıf University, Istanbul 34093, Türkiye
| | - Ali Asram Sağıroğlu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Bezmialem Vakıf University, Istanbul 34093, Türkiye
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University-Cerrahpaşa, Istanbul 34500, Türkiye
| | - Kübra Bozali
- Department of Medical Biochemistry, Faculty of Hamidiye Medicine, University of Health Science, Istanbul 34668, Türkiye
| | - Eray Metin Güler
- Department of Medical Biochemistry, Faculty of Hamidiye Medicine, University of Health Science, Istanbul 34668, Türkiye
| | - Sevgi Güngör
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34116, Türkiye
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6
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Berkey CA, Styke C, Yoshitake H, Sonoki Y, Uchiyama M, Dauskardt RH. Carbon dioxide foam bubbles enhance skin penetration through the stratum corneum layer with mechanical mechanism. Colloids Surf B Biointerfaces 2023; 231:113538. [PMID: 37738871 DOI: 10.1016/j.colsurfb.2023.113538] [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: 07/09/2023] [Revised: 08/25/2023] [Accepted: 09/08/2023] [Indexed: 09/24/2023]
Abstract
Topical skin formulations often include penetration enhancers that interact with the outer stratum corneum (SC) layer to chemically enhance diffusion. Alternatively, penetration can be mechanically enhanced with simple rubbing in the presence of solid particles sometimes included to exfoliate the top layers of the SC. Our goal was to evaluate micron-sized carbon dioxide bubbles included in a foamed moisturizing formulation as a mechanical penetration enhancement strategy. We show that moisturizing foam bubbles cause an increase in SC formulation penetration using both mechanical and spectroscopic characterization. Our results suggest viscous liquid film drainage between coalescing gaseous bubbles creates local regions of increased hydrodynamic pressure in the foam liquid layer adjacent to the SC surface that enhances treatment penetration. An SC molecular diffusion model is used to rationalize the observed behavior. The findings indicate marked increased levels of treatment concentration in the SC at 2 h and that persists to 18 h after exposure, far exceeding non-foamed treatments. The study suggests an alternate strategy for increasing formulation penetration with a non-chemical mechanism.
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Affiliation(s)
- Christopher A Berkey
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Cassandra Styke
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | | | | | | | - Reinhold H Dauskardt
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA.
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7
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Larese Filon F, Maculan P, Crivellaro MA, Mauro M. Effectiveness of a Skin Care Program With a Cream Containing Ceramide C and a Personalized Training for Secondary Prevention of Hand Contact Dermatitis. Dermatitis 2023; 34:127-134. [PMID: 36939821 PMCID: PMC10029085 DOI: 10.1089/derm.2022.29002.flf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
Background/Objectives: The aim of our study was to investigate the effectiveness of personalized training on skin protection associated with the regular use of ceramide-containing cream (CC) versus other creams (OC) for improving hand contact dermatitis. Methods: We performed a double-center randomized trial that enrolled workers with hand dermatitis. All workers received personalized training. The intervention was 3 times per day application of the study emollient. The control arm used an emollient of choice without ceramide, as needed. The primary outcome was improvement in hand dermatitis at 1 and 3 months of follow-up. Results: In total, 102 patients with hand dermatitis were enrolled in this study. Improvement in dermatitis was found in 40%, 52.5%, 50%, and 63% of OC and CC, at the first and second follow-ups, respectively. The use of CC was significantly associated with an improvement in dermatitis (odds ratios 2.6; 95% confidence intervals 1.30-5.2), analyzed using generalized equation estimation during the follow-up. Conclusion: Our study demonstrated that an educational personalized intervention could improve the signs and symptoms in patients with hand dermatitis, and the use of a CC resulted in a significantly better outcome during the 3 months of follow-up.
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Affiliation(s)
| | - Pietro Maculan
- Unit of Occupational Medicine, University of Padova, Via Giustiniani 2, 35128 Padova, Italy
| | | | - Marcella Mauro
- From the *Unit of Occupational Medicine, University of Trieste, Trieste, Italy
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8
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Honma N, Hatta I, Okazaki T, Tokudome Y. Modulation of function and structure of stratum corneum in sphingomyelin synthase 2-deficient mice. Chem Phys Lipids 2022; 249:105255. [PMID: 36279928 DOI: 10.1016/j.chemphyslip.2022.105255] [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: 07/15/2022] [Revised: 09/22/2022] [Accepted: 10/17/2022] [Indexed: 01/25/2023]
Abstract
Sphingomyelin synthase (SMS) synthesizes sphingomyelin (SM) from ceramide (Cer), a precursor of Cer. The effects of SMS deficiency on stratum corneum (SC) barrier function and SC lamellar structure are unknown. In this report, permeation of hydrophilic and lipophilic compounds through full-thickness skin or stripped skin of SMS2-knockout (KO) and wild-type (WT) mice was examined. Furthermore, small-angle and wide-angle X-ray scattering (SAXS and WAXS) measurements of the SC were performed as a function of temperature to analyze the lamellar structure and hydrocarbon chain packing, where a SC sample was changed from 10 °C to 120 °C at 2 °C/min and the X-ray diffraction profile in the small-angle region and the wide-angle region was observed. Skin permeability of the hydrophilic compound increased significantly for SMS2-KO mice when compared with that of WT mice. In contrast, no difference was observed in the penetration of lipophilic compounds in the skin of both SMS2-KO and WT mice. In SC of SMS2-KO mice, two sharp SAXS peaks were observed due to the lamellar structure with a repetition period of 4.8 nm. The WAXS revealed that the intensity ratio R0.42/0.37 of the 0.42 nm peak at 2.4 nm-1 to the 0.37 nm peak at 2.7 nm-1 was smaller in the SMS2-KO mouse than in the WT mouse. Due to the temperature dependence of the WAXS, the peaks of 2.4 and 2.7 nm-1 remained until the higher temperatures in SMS2-KO mouse SC than those in WT mouse SC. The results of X-ray diffraction suggest that deficiency of SMS2 may cause the appearance of highly ordered structures of SC, which in turn may reduce the barrier function of SC.
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Affiliation(s)
- Nozomi Honma
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan
| | - Ichiro Hatta
- Department of Research, Nagoya Industrial Science Research Institute, 1-13 Yotsuyadori, Chikusa-ku, Nagoya 464-0819, Japan
| | - Toshiro Okazaki
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, 1-308 Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Yoshihiro Tokudome
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan; Laboratory of Cosmetic Sciences, Regional Innovation Center, Saga University, 1 Honjo, Saga 840-8502, Japan.
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Shin KO, Mihara H, Ishida K, Uchida Y, Park K. Exogenous Ceramide Serves as a Precursor to Endogenous Ceramide Synthesis and as a Modulator of Keratinocyte Differentiation. Cells 2022; 11:cells11111742. [PMID: 35681438 PMCID: PMC9179460 DOI: 10.3390/cells11111742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/18/2022] [Accepted: 05/18/2022] [Indexed: 12/16/2022] Open
Abstract
Since ceramide is a key epidermal barrier constituent and its deficiency causes barrier-compromised skin, several molecular types of ceramides are formulated in commercial topical agents to improve barrier function. Topical ceramide localizes on the skin surface and in the stratum corneum, but certain amounts of ceramide penetrate the stratum granulosum, becoming precursors to endogenous ceramide synthesis following molecular modification. Moreover, exogenous ceramide as a lipid mediator could modulate keratinocyte proliferation/differentiation. We here investigated the biological roles of exogenous NP (non-hydroxy ceramide containing 4-hydroxy dihydrosphingosine) and NDS (non-hydroxy ceramide containing dihydrosphingosine), both widely used as topical ceramide agents, in differentiated-cultured human keratinocytes. NDS, but not NP, becomes a precursor for diverse ceramide species that are required for a vital permeability barrier. Loricrin (late differentiation marker) production is increased in keratinocytes treated with both NDS and NP vs. control, while bigger increases in involucrin (an early differentiation marker) synthesis were observed in keratinocytes treated with NDS vs. NP and control. NDS increases levels of a key antimicrobial peptide (an innate immune component), cathelicidin antimicrobial peptide (CAMP/LL-37), that is upregulated by a ceramide metabolite, sphingosine-1-phosphate. Our studies demonstrate that NDS could be a multi-potent ceramide species, forming heterogenous ceramide molecules and a lipid mediator to enhance differentiation and innate immunity.
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Affiliation(s)
- Kyong-Oh Shin
- Department of Food Science & Nutrition, Convergence Program of Material Science for Medicine and Pharmaceutics, Hallym University, Chuncheon 31151, Korea;
- The Korean Institute of Nutrition, Hallym University, Chuncheon 31151, Korea
- LaSS Lipid Institute (LLI), LaSS Inc., Chuncheon 31151, Korea
| | - Hisashi Mihara
- Takasago International Company, Hiratsuka 259-1207, Japan; (H.M.); (K.I.)
| | - Kenya Ishida
- Takasago International Company, Hiratsuka 259-1207, Japan; (H.M.); (K.I.)
| | - Yoshikazu Uchida
- Department of Food Science & Nutrition, Convergence Program of Material Science for Medicine and Pharmaceutics, Hallym University, Chuncheon 31151, Korea;
- The Korean Institute of Nutrition, Hallym University, Chuncheon 31151, Korea
- Veterans Affairs Medical Center, Department of Dermatology, School of Medicine, Northern California Institute for Research and Education, University of California, San Francisco, CA 94158, USA
- Correspondence: (Y.U.); (K.P.); Tel.: +82-33-248-3146 (Y.U.); +82-33-248-2131 (K.P.)
| | - Kyungho Park
- Department of Food Science & Nutrition, Convergence Program of Material Science for Medicine and Pharmaceutics, Hallym University, Chuncheon 31151, Korea;
- The Korean Institute of Nutrition, Hallym University, Chuncheon 31151, Korea
- Correspondence: (Y.U.); (K.P.); Tel.: +82-33-248-3146 (Y.U.); +82-33-248-2131 (K.P.)
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Čuříková-Kindlová BA, Vovesná A, Nováčková A, Zbytovská J. In Vitro Modeling of Skin Barrier Disruption and its Recovery by Ceramide-Based Formulations. AAPS PharmSciTech 2021; 23:21. [PMID: 34907505 DOI: 10.1208/s12249-021-02154-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/27/2021] [Indexed: 11/30/2022] Open
Abstract
Disrupted skin barrier, one of the severe attributes of inflammatory skin diseases, is caused by lower content and pathological changes of lipids in the uppermost skin layer-stratum corneum (SC). Restoring skin barrier with native skin lipids, especially ceramides (Cers), appears to be a promising therapy with minimum side effects. For testing the efficiency of these formulations, suitable in vitro models of the skin with disrupted barriers are needed. For the similarity with the human tissue, our models were based on the pig ear skin. Three different ways of skin barrier disruption were tested and compared: tape stripping, lipid extraction with organic solvents, and barrier disruption by sodium lauryl sulfate. The level of barrier disruption was investigated by permeation studies, and parameters of each method were modified to reach significant changes between the non-disrupted skin and our model. Fourier transform infrared (FTIR) spectroscopy was employed to elucidate the changes of the skin permeability on the molecular scale. Further, the potential of the developed models to be restored by skin barrier repairing agents was evaluated by the same techniques. We observed a significant decrease in permeation characteristics through our in vitro models treated with the lipid mixtures compared to the untreated damaged skin, which implied that the skin barrier was substantially restored. Taken together, the results suggest that our in vitro models are suitable for the screening of potential barrier repairing agents.
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11
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Abstract
Ceramides are a class of sphingolipid that is the backbone structure for all sphingolipids, such as glycosphingolipids and phosphosphingolipids. While being a minor constituent of cellular membranes, ceramides are the major lipid component (along with cholesterol, free fatty acid, and other minor components) of the intercellular spaces of stratum corneum that forms the epidermal permeability barrier. These stratum corneum ceramides consist of unique heterogenous molecular species that have only been identified in terrestrial mammals. Alterations of ceramide molecular profiles are characterized in skin diseases associated with compromised permeability barrier functions, such as atopic dermatitis, psoriasis and xerosis. In addition, hereditary abnormalities of some ichthyoses are associated with an epidermal unique ceramide species, omega-O-acylceramide. Ceramides also serve as lipid modulators to regulate cellular functions, including cell cycle arrest, differentiation, and apoptosis, and it has been demonstrated that changes in ceramide metabolism also cause certain diseases. In addition, ceramide metabolites, sphingoid bases, sphingoid base-1-phosphate and ceramide-1-phosphate are also lipid mediators that regulate cellular functions. In this review article, we describe diverse physiological and pathological roles of ceramides and their metabolites in epidermal permeability barrier function, epidermal cell proliferation and differentiation, immunity, and cutaneous diseases. Finally, we summarize the utilization of ceramides as therapy to treat cutaneous disease.
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12
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Ohnari H, Sekiya M, Naru E, Ogura T, Sakata O, Obata Y. Amino Acids and Their N-Acetylated Derivatives Maintain the Skin's Barrier Function. Chem Pharm Bull (Tokyo) 2021; 69:652-660. [PMID: 34193714 DOI: 10.1248/cpb.c21-00152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The hydrocarbon-chain packing structure of intercellular lipids in the stratum corneum (SC) is critical to the skin's barrier function. We previously found that formation of V-shaped ceramide reduces the barrier function of skin. There are few agents, apart from ceramides and fatty acids that can improve the orthorhombic packing (Orth) ratio of the intercellular lipid packing structure. In this study, we investigated agents that directly increase the Orth ratio. We selected an intercellular lipid model consisting of ceramide, cholesterol, and palmitic acid and performed differential scanning calorimetry. We focused on natural moisturizing factor components in the SC, and therefore investigated amino acids and their derivatives. The results of our intercellular lipid model-based study indicate that N-acetyl-L-hydroxyproline (AHYP), remarkably, maintains the lamellar structure. We verified the effect of AHYP on the lamellar structure and hydrocarbon chain packing structure of intercellular lipids using time-resolved X-ray diffraction measurements of human SC. We also determined the direct physicochemical effects of AHYP on the Orth ratio of the hydrocarbon-chain packing structure. Hence, the results of our human SC study suggest that AHYP preserves skin barrier function by maintaining the hydrocarbon-chain packing structure of intercellular lipids via electrostatic repulsion. These findings will facilitate the development of skincare formulation that can maintain the skin's barrier function.
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Affiliation(s)
| | | | - Eiji Naru
- Research and Development Division, KOSÉ Corporation
| | - Taku Ogura
- Research Institute for Science & Technology, Tokyo University of Science
| | - Osamu Sakata
- Research and Development Division, KOSÉ Corporation
| | - Yasuko Obata
- Department of Pharmaceutical Sciences, Hoshi University
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Role of the Permeability Barrier in Contact Dermatitis. Contact Dermatitis 2021. [DOI: 10.1007/978-3-030-36335-2_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Liu Y, Lunter DJ. Selective and sensitive spectral signals on confocal Raman spectroscopy for detection of ex vivo skin lipid properties. TRANSLATIONAL BIOPHOTONICS 2020. [DOI: 10.1002/tbio.202000003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Yali Liu
- Department of Pharmaceutical Technology, Faculty of Science Eberhard Karls Universität Tübingen Tuebingen Germany
| | - Dominique Jasmin Lunter
- Department of Pharmaceutical Technology, Faculty of Science Eberhard Karls Universität Tübingen Tuebingen Germany
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15
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Role of the Permeability Barrier in Contact Dermatitis. Contact Dermatitis 2020. [DOI: 10.1007/978-3-319-72451-5_6-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Bhattacharya N, Sato WJ, Kelly A, Ganguli-Indra G, Indra AK. Epidermal Lipids: Key Mediators of Atopic Dermatitis Pathogenesis. Trends Mol Med 2019; 25:551-562. [PMID: 31054869 DOI: 10.1016/j.molmed.2019.04.001] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/19/2019] [Accepted: 04/01/2019] [Indexed: 02/06/2023]
Abstract
The skin barrier keeps the 'inside in' and the 'outside out', forming a protective blanket against external insults. Epidermal lipids, such as ceramides, fatty acids (FAs), triglycerides, and cholesterol, are integral components driving the formation and maintenance of the epidermal permeability barrier (EPB). A breach in this lipid barrier sets the platform for the subsequent onset and progression of atopic dermatitis (AD). Such lipids are also important in the normal functioning of organisms, both plants and animals, and in diseases, including cancer. Given the doubling of the number of cases of AD in recent years and the chronic nature of this disorder, here we shed light on the multifaceted role of diverse types of lipid in mediating AD pathogenesis.
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Affiliation(s)
- Nilika Bhattacharya
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA
| | - William J Sato
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA
| | - Avalon Kelly
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA
| | - Gitali Ganguli-Indra
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA; Knight Cancer Institute, Portland, OR 97239, USA
| | - Arup K Indra
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, OR 97331, USA; Knight Cancer Institute, Portland, OR 97239, USA; Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, USA; Linus Pauling Science Center, Oregon State University, Corvallis, OR, USA; Departments of Dermatology, Oregon Health & Science University (OHSU), Portland, OR 97239, USA.
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