1
|
Pereda J, Milde Khatib C, Kezic S, Christensen MO, Yang S, Thyssen JP, Chu CY, Riethmüller C, Liao HS, Akhtar I, Ungar B, Guttman-Yassky E, Hædersdal M, Hwu ET. A Review of Atomic-Force Microscopy in Skin Barrier Function Assessment. J Invest Dermatol 2024:S0022-202X(24)00357-9. [PMID: 38888524 DOI: 10.1016/j.jid.2024.04.005] [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: 05/05/2023] [Revised: 04/02/2024] [Accepted: 04/13/2024] [Indexed: 06/20/2024]
Abstract
Skin barrier function (SBF) disorders are a class of pathologies that affect a significant portion of the world population. These disorders cause skin lesions with intense itch, impacting patients' physical and psychological well-being as well as their social functioning. It is in the interest of patients that their disorder be monitored closely while under treatment to evaluate the effectiveness of the ongoing therapy and any potential adverse reactions. Symptom-based assessment techniques are widely used by clinicians; however, they carry some limitations. Techniques to assess skin barrier impairment are critical for understanding the nature of the disease and for helping personalize treatment. This review recalls the anatomy of the skin barrier and describes an atomic-force microscopy approach to quantitatively monitor its disorders and their response to treatment. We review a panel of studies that show that this technique is highly relevant for SBF disorder research, and we aim to motivate its adoption into clinical settings.
Collapse
Affiliation(s)
- Jorge Pereda
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Casper Milde Khatib
- Department of Dermatology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Sanja Kezic
- Amsterdam UMC, Coronel Institute of Occupational Health, Amsterdam, The Netherlands
| | | | - Sara Yang
- Department of Dermatology, Allergology and Venereology, University Hospital Schleswig-Holstein, University of Lübeck, Lübeck, Germany
| | - Jacob P Thyssen
- Department of Dermatology, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Chia-Yu Chu
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | | | - Hsien-Shun Liao
- Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
| | - Imtisal Akhtar
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Lyngby, Denmark
| | - Benjamin Ungar
- The Kimberly and Eric J. Waldman Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Emma Guttman-Yassky
- The Kimberly and Eric J. Waldman Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Merete Hædersdal
- Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - En-Te Hwu
- The Danish National Research Foundation and Villum Foundation's Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN), Department of Health Technology, Technical University of Denmark, Lyngby, Denmark.
| |
Collapse
|
2
|
Mias C, Stennevin A, Doat G, Catté A, Chlasta J, Bessou-Touya S, Duplan H. Effect of a low-mineralized thermal spring water on skin barrier mechanical properties using atomic force microscopy. Exp Dermatol 2024; 33:e15113. [PMID: 38855894 DOI: 10.1111/exd.15113] [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: 11/17/2023] [Revised: 05/13/2024] [Accepted: 05/22/2024] [Indexed: 06/11/2024]
Abstract
The mineral content of thermal spring water (TSW) applied to the skin surface can directly influence the skin barrier. Indeed, our previous study showed that Avène TSW (ATSW), a low mineral content thermal spring water, protects the stratum corneum from dehydration compared to a mineral-rich TSW (MR-TSW) and maintains skin surface ultrastructure. While many TSWs have been recognized to have beneficial effects on skin, little is known about their localized and specific effects on skin barrier biomechanics at the nanometric scale. The aim of this study was to compare the effects of ATSW with a reference, MR-TSW, on the biomechanical barrier properties of the skin under homeostasis conditions using atomic force microscopy (AFM). AFM was used to obtain a precise nanomechanical mapping of the skin surface after three applications of both TSW. This provides specific information on the skin topographical profile and elasticity. The topographic profile of skin samples showed a specific compaction of the skin layers after application of MR-TSW, characterized by an increase of the total number of external skin layers, compared to non-treated samples. By contrast, ATSW did not modify the skin topographic profile. High-resolution force/volume acquisitions to capture the elastic modulus showed that it was directly correlated with skin rigidity. The elastic modulus strongly and significantly increased after MR-TSW application compared to non-treated skin. By contrast, applications of ATSW did not increase elastic modulus. These data demonstrate that applications of MR-TSW significantly modified skin barrier properties by increasing skin surface layer compaction and skin rigidity. By contrast, ATSW did not modify the topographical profile of skin explants nor induce mechanical stress at the level of the stratum corneum, indicating it does not disrupt the biophysical properties linked to skin surface integrity.
Collapse
Affiliation(s)
- C Mias
- Pierre Fabre Dermo-Cosmétique et Personal Care, Toulouse, France
| | | | - G Doat
- Direction médicale AVENE, Lavaur, France
| | | | | | - S Bessou-Touya
- Pierre Fabre Dermo-Cosmétique et Personal Care, Toulouse, France
| | - H Duplan
- Pierre Fabre Dermo-Cosmétique et Personal Care, Toulouse, France
| |
Collapse
|
3
|
Cho DH, Aguayo S, Cartagena-Rivera AX. Atomic force microscopy-mediated mechanobiological profiling of complex human tissues. Biomaterials 2023; 303:122389. [PMID: 37988897 PMCID: PMC10842832 DOI: 10.1016/j.biomaterials.2023.122389] [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: 07/27/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/23/2023]
Abstract
Tissue mechanobiology is an emerging field with the overarching goal of understanding the interplay between biophysical and biochemical responses affecting development, physiology, and disease. Changes in mechanical properties including stiffness and viscosity have been shown to describe how cells and tissues respond to mechanical cues and modify critical biological functions. To quantitatively characterize the mechanical properties of tissues at physiologically relevant conditions, atomic force microscopy (AFM) has emerged as a highly versatile biomechanical technology. In this review, we describe the fundamental principles of AFM, typical AFM modalities used for tissue mechanics, and commonly used elastic and viscoelastic contact mechanics models to characterize complex human tissues. Furthermore, we discuss the application of AFM-based mechanobiology to characterize the mechanical responses within complex human tissues to track their developmental, physiological/functional, and diseased states, including oral, hearing, and cancer-related tissues. Finally, we discuss the current outlook and challenges to further advance the field of tissue mechanobiology. Altogether, AFM-based tissue mechanobiology provides a mechanistic understanding of biological processes governing the unique functions of tissues.
Collapse
Affiliation(s)
- David H Cho
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
| | - Sebastian Aguayo
- Dentistry School, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile; Schools of Engineering, Medicine, and Biological Sciences, Institute for Biological and Medical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexander X Cartagena-Rivera
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
| |
Collapse
|
4
|
Sandmair MN, Kleber C, Ströbele DA, von See C. AFM Analysis of a Three-Point Flexure Tested, 3D Printing Definitive Restoration Material for Dentistry. J Funct Biomater 2023; 14:jfb14030152. [PMID: 36976076 PMCID: PMC10056548 DOI: 10.3390/jfb14030152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Background: Three-dimensional printing is a rapidly developing technology across all industries. In medicine recent developments include 3D bioprinting, personalized medication and custom prosthetics and implants. To ensure safety and long-term usability in a clinical setting, it is essential to understand material specific properties. This study aims to analyze possible surface changes of a commercially available and approved DLP 3D printed definitive restoration material for dentistry after three-point flexure testing. Furthermore, this study explores whether Atomic Force Microscopy (AFM) is a feasible method for examination of 3D printed dental materials in general. This is a pilot study, as there are currently no studies that analyze 3D printed dental materials using an AFM. Methods: The present study consisted of a pretest followed by the main test. The resulting break force of the preliminary test was used to determine the force used in the main test. The main test consisted of atomic force microscopy (AFM) surface analysis of the test specimen followed by a three-point flexure procedure. After bending, the same specimen was analyzed with the AFM again, to observe possible surface changes. Results: The mean root mean square (RMS) roughness of the segments with the most stress was 20.27 nm (±5.16) before bending, while it was 26.48 nm (±6.67) afterward. The corresponding mean roughness (Ra) values were 16.05 nm (±4.25) and 21.19 nm (±5.71) Conclusions: Under three-point flexure testing, the surface roughness increased significantly. The p-value for RMS roughness was p = 0.003, while it was p = 0.006 for Ra. Furthermore, this study showed that AFM surface analysis is a suitable procedure to investigate surface changes in 3D printed dental materials.
Collapse
Affiliation(s)
- Maximilian N. Sandmair
- Research Center for Digital Technologies in Dentistry and CAD/CAM, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University, 3500 Krems, Austria
- Correspondence: (M.N.S.); (C.v.S.)
| | - Christoph Kleber
- Department of Medicine, Faculty of Medicine and Dentistry, Danube Private University, 3500 Krems, Austria
| | - Dragan A. Ströbele
- Research Center for Digital Technologies in Dentistry and CAD/CAM, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University, 3500 Krems, Austria
| | - Constantin von See
- Research Center for Digital Technologies in Dentistry and CAD/CAM, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University, 3500 Krems, Austria
- Correspondence: (M.N.S.); (C.v.S.)
| |
Collapse
|
5
|
Altamimi M, Hussain A, Mahdi WA, Imam SS, Alshammari MA, Alshehri S, Khan MR. Mechanistic Insights into Luteolin-Loaded Elastic Liposomes for Transdermal Delivery: HSPiP Predictive Parameters and Instrument-Based Evidence. ACS OMEGA 2022; 7:48202-48214. [PMID: 36591170 PMCID: PMC9798756 DOI: 10.1021/acsomega.2c06288] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/30/2022] [Indexed: 05/14/2023]
Abstract
We evaluated mechanistic insights into luteolin (LUT)-loaded elastic liposomes (OLEL1) permeated across rat skin. HSPiP software-based parameters, thermal analysis, infrared analysis, and morphological evaluations were employed to understand mechanistic observations of drug permeation and deposition. HSPiP provided HSP values (δd, δp, and δh) of OLEL1 (based on composition), LUT, excipients, and rat skin (literature value and by-default value). Rat skin was studied via Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), fluorescence microscopy, scanning electron microscopy (SEM), and atomic force microscopy (AFM) studies. The δd and δh estimation of the skin and phosphatidylcholine showed close relation in terms of δd and δh. Similarly, OLEL1 and the skin might interact with each other mainly through δd and δp forces as evidenced by the predicted values. The untreated skin showed characteristic stretching and vibrations as compared to lower frequencies caused by OLEL1. DSC showed changes in the thermal behavior of the skin after OLEL1 treatment as compared to the untreated skin. Visualization of these changes was evident under fluorescence microscopy and SEM for confirmed substantial reversible surface perturbation of the skin protein layer for improved vesicle permeation and subsequent internalization with the inner skin matrix. The AFM study confirmed the nanoscale surface roughness variation caused substantially by OLEL1 and OLEL1 placebo as compared to the untreated control and drug solution. Thus, the study clearly demonstrated mechanistic insights into LUT-loaded vesicles across rat skin for enhanced permeation and drug deposition.
Collapse
Affiliation(s)
- Mohammad
A. Altamimi
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Afzal Hussain
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
- . Phone: +966564591584
| | - Wael A. Mahdi
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Syed Sarim Imam
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Musaad A. Alshammari
- Department
of Pharmacology, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Sultan Alshehri
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Mohammad Rashid Khan
- Department
of Pharmacology, College of Pharmacy, King
Saud University, Riyadh 11451, Saudi Arabia
| |
Collapse
|
6
|
Johnson JL, Brown SJ, Le LQ, Udey MC. The Research Techniques Made Simple Series: Lasting and Future Impact on Investigative Dermatology. J Invest Dermatol 2021; 141:2761-2764. [PMID: 34802548 DOI: 10.1016/j.jid.2021.09.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 09/30/2021] [Indexed: 12/22/2022]
Affiliation(s)
- Jodi L Johnson
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA; Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
| | - Sara J Brown
- Department of Dermatology, NHS Lothian, Edinburgh, United Kingdom; Centre for Genomics & Experimental Medicine, The University of Edinburgh, Edinburgh, United Kingdom
| | - Lu Q Le
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Mark C Udey
- Division of Dermatology, John T. Milliken Department of Internal Medicine, Washington University School of Medicine in St Louis, Saint Louis, Missouri, USA
| |
Collapse
|