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Alexiev U, Rühl E. Visualization of Nanocarriers and Drugs in Cells and Tissue. Handb Exp Pharmacol 2024; 284:153-189. [PMID: 37566121 DOI: 10.1007/164_2023_684] [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: 08/12/2023]
Abstract
In this chapter, the visualization of nanocarriers and drugs in cells and tissue is reviewed. This topic is tightly connected to modern drug delivery, which relies on nanoscopic drug formulation approaches and the ability to probe nanoparticulate systems selectively in cells and tissue using advanced spectroscopic and microscopic techniques. We first give an overview of the breadth of this research field. Then, we mainly focus on topical drug delivery to the skin and discuss selected visualization techniques from spectromicroscopy, such as scanning transmission X-ray microscopy and fluorescence lifetime imaging. These techniques rely on the sensitive and quantitative detection of the topically applied drug delivery systems and active substances, either by exploiting their molecular properties or by introducing environmentally sensitive probes that facilitate their detection.
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Affiliation(s)
- Ulrike Alexiev
- Fachbereich Physik, Freie Universität Berlin, Berlin, Germany.
| | - Eckart Rühl
- Physikalische Chemie, Freie Universität Berlin, Berlin, Germany.
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2
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Bonnier F, Pedrazzani M, Fischman S, Viel T, Lavoix A, Pegoud D, Nili M, Jimenez Y, Ralambondrainy S, Cauchard JH, Korichi R. Line-field confocal optical coherence tomography coupled with artificial intelligence algorithms to identify quantitative biomarkers of facial skin ageing. Sci Rep 2023; 13:13881. [PMID: 37620374 PMCID: PMC10449778 DOI: 10.1038/s41598-023-40340-0] [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: 04/25/2023] [Accepted: 08/09/2023] [Indexed: 08/26/2023] Open
Abstract
Quantitative biomarkers of facial skin ageing were studied from one hundred healthy Caucasian female volunteers, aged 20-70 years, using in vivo 3D Line-field Confocal Optical Coherence Tomography (LC-OCT) imaging coupled with Artificial Intelligence (AI)-based quantification algorithms. Layer metrics, i.e. stratum corneum thickness (SC), viable epidermal thickness and Dermal-Epidermal Junction (DEJ) undulation, as well as cellular metrics were measured for the temple, cheekbone and mandible. For all three investigated facial areas, minimal age-related variations were observed in the thickness of the SC and viable epidermis layers. A flatter and more homogeneous epidermis (decrease in the standard deviation of the number of layers means), a less dense cellular network with fewer cells per layer (decrease in cell surface density), and larger and more heterogeneous nuclei within each layer (increase in nuclei volume and their standard deviation) were found with significant variations with age. The higher atypia scores further reflected the heterogeneity of nuclei throughout the viable epidermis. The 3D visualisation of fine structures in the skin at the micrometric resolution and the 1200 µm × 500 µm field of view achieved with LC-OCT imaging enabled to compute relevant quantitative biomarkers for a better understanding of skin biology and the ageing process in vivo.
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Affiliation(s)
- Franck Bonnier
- LVMH Recherche, 185 Avenue de Verdun, 45804, Saint Jean de Braye, France.
| | | | | | - Théo Viel
- DAMAE Medical, 14 Rue Sthrau, 75013, Paris, France
| | - Agnes Lavoix
- DERMATECH, 8 Rue Jacqueline Auriol, 69008, Lyon, France
| | - Didier Pegoud
- DERMATECH, 8 Rue Jacqueline Auriol, 69008, Lyon, France
| | - Meryem Nili
- DERMATECH, 8 Rue Jacqueline Auriol, 69008, Lyon, France
| | | | | | | | - Rodolphe Korichi
- LVMH Recherche, 185 Avenue de Verdun, 45804, Saint Jean de Braye, France
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3
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Khadivar P, Alipour M. Synergic effect of bone marrow derived mesenchymal stem cells and differentiated keratinocytes-like cells with a novel cellulose and collagen nanoscaffold on wound healing in rats. Biomed Pharmacother 2023. [DOI: 10.1016/j.biopha.2023.114404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
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4
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Joshi A, Nuntapramote T, Brüggemann D. Self-Assembled Fibrinogen Scaffolds Support Cocultivation of Human Dermal Fibroblasts and HaCaT Keratinocytes. ACS OMEGA 2023; 8:8650-8663. [PMID: 36910955 PMCID: PMC9996769 DOI: 10.1021/acsomega.2c07896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Self-assembled fibrinogen scaffolds are highly attractive biomaterials to mimic native blood clots. To explore their potential for wound healing, we studied the interaction of cocultures of human dermal fibroblasts (HDFs) and HaCaT keratinocytes with nanofibrous, planar, and physisorbed fibrinogen. Cell viability analysis indicated that the growth of HDFs and HaCaTs was supported by all fibrinogen topographies until 14 days, either in mono- or coculture. Using scanning electron microscopy and cytoskeletal staining, we observed that the native morphology of both cell types was preserved on all topographies. Expression of the marker proteins vimentin and cytokeratin-14 showed that the native phenotype of fibroblasts and undifferentiated keratinocytes, respectively, was maintained. HDFs displayed their characteristic wound healing phenotype, characterized by expression of fibronectin. Finally, to mimic the multilayered microenvironment of skin, we established successive cocultures of both cells, for which we found consistently high metabolic activities. SEM analysis revealed that HaCaTs arranged into a confluent top layer after 14 days, while fluorescent labeling confirmed the presence of both cells in the layered structure after 6 days. In conclusion, all fibrinogen topographies successfully supported the cocultivation of fibroblasts and keratinocytes, with fibrinogen nanofibers being particularly attractive for skin regeneration due to their biomimetic porous architecture and the technical possibility to be detached from an underlying substrate.
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Affiliation(s)
- Arundhati Joshi
- Institute
for Biophysics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
| | - Titinun Nuntapramote
- Institute
for Biophysics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
| | - Dorothea Brüggemann
- Institute
for Biophysics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
- MAPEX
Center for Materials and Processes, University
of Bremen, 28359 Bremen, Germany
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5
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Pena AM, Baldeweck T, Decencière E, Koudoro S, Victorin S, Raynaud E, Ngo B, Bastien P, Brizion S, Tancrède-Bohin E. In vivo multiphoton multiparametric 3D quantification of human skin aging on forearm and face. Sci Rep 2022; 12:14863. [PMID: 36050338 PMCID: PMC9437074 DOI: 10.1038/s41598-022-18657-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Quantifying skin aging changes and characterizing its 3D structure and function in a non-invasive way is still a challenging area of research, constantly evolving with the development of imaging methods and image analysis tools. In vivo multiphoton imaging offers means to assess skin constituents in 3D, however prior skin aging studies mostly focused on 2D analyses of dermal fibers through their signals’ intensities or densities. In this work, we designed and implemented multiphoton multiparametric 3D quantification tools for in vivo human skin pigmentation and aging characterization. We first demonstrated that despite the limited field of view of the technic, investigation of 2 regions of interest (ROIs) per zone per volunteer is a good compromise in assessing 3D skin constituents in both epidermis and superficial dermis. We then characterized skin aging on different UV exposed areas—ventral and dorsal forearms, face. The three major facts of aging that are epidermal atrophy, the dermal–epidermal junction (DEJ) flattening and dermal elastosis can be non-invasively quantified and compared. Epidermal morphological changes occur late and were only objectified between extreme age groups. Melanin accumulation in suprabasal layers with age and chronic exposure on ventral and dorsal forearms is less known and appears earlier. Superficial dermal aging changes are mainly elastin density increase, with no obvious change in collagen density, reflected by SHGto2PEF ratio and SAAID index decrease and ImbrN index increase on all skin areas. Analysis of the z-dermal distribution of these parameters highlighted the 2nd 20 µm thickness normalized dermal sub-layer, that follows the DEJ shape, as exhibiting the highest aging differences. Moreover, the 3D ImbrN index allows refining the share of photoaging in global aging on face and the 3D SAAID index on forearm, which elastin or fibrillar collagens densities alone do not allow. Photoaging of the temple area evolves as a function of chronic exposure with a more pronounced increase in elastin density, also structurally modified from thin and straight elastic fibers in young volunteers to dense and compact pattern in older ones. More generally, multiphoton multiparametric 3D skin quantification offers rich spatial information of interest in assessing normal human skin condition and its pathological, external environment or product induced changes.
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Affiliation(s)
- Ana-Maria Pena
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France.
| | - Thérèse Baldeweck
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France
| | | | - Serge Koudoro
- MINES ParisTech-PSL Research University, Fontainebleau, France
| | - Steeve Victorin
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France
| | - Edouard Raynaud
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France
| | - Blandine Ngo
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France
| | - Philippe Bastien
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France
| | - Sébastien Brizion
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France
| | - Emmanuelle Tancrède-Bohin
- L'Oréal Research and Innovation, Campus Charles Zviak RIO, 9 rue Pierre Dreyfus, Clichy, France. .,Service de Dermatologie, Hôpital Saint-Louis, Paris, France.
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6
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Harmon RM, Devany J, Gardel ML. Dia1 coordinates differentiation and cell sorting in a stratified epithelium. J Biophys Biochem Cytol 2022; 221:213092. [PMID: 35323863 PMCID: PMC8958268 DOI: 10.1083/jcb.202101008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 11/10/2021] [Accepted: 03/01/2022] [Indexed: 11/27/2022] Open
Abstract
Although implicated in adhesion, only a few studies address how the actin assembly factors guide cell positioning in multicellular tissues. The formin, Dia1, localizes to the proliferative basal layer of the epidermis. In organotypic cultures, Dia1 depletion reduced basal cell density and resulted in stratified tissues with disorganized differentiation and proliferative markers. Since crowding induces differentiation in epidermal tissues, we hypothesized that Dia1 is essential to reach densities amenable to differentiation before or during stratification. Consistent with this, forced crowding of Dia1-deficient cells rescued transcriptional abnormalities. We find Dia1 promotes rapid growth of lateral cell–cell adhesions, necessary for the construction of a highly crowded monolayer. In aggregation assays, cells sorted into distinct layers based on Dia1 expression status. These results suggest that as basal cells proliferate, reintegration and packing of Dia1-positive daughter cells is favored, whereas Dia1-negative cells tend to delaminate to a suprabasal compartment. This work elucidates the role of formin expression patterns in constructing distinct cellular domains within stratified epithelia.
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Affiliation(s)
- Robert M Harmon
- James Franck Institute, The University of Chicago, Chicago, IL.,Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL
| | - John Devany
- James Franck Institute, The University of Chicago, Chicago, IL.,Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL.,Department of Physics, The University of Chicago, Chicago, IL
| | - Margaret L Gardel
- James Franck Institute, The University of Chicago, Chicago, IL.,Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL.,Department of Physics, The University of Chicago, Chicago, IL.,Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL
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7
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Schepler H, Neufurth M, Wang S, She Z, Schröder HC, Wang X, Müller WE. Acceleration of chronic wound healing by bio-inorganic polyphosphate: In vitro studies and first clinical applications. Am J Cancer Res 2022; 12:18-34. [PMID: 34987631 PMCID: PMC8690915 DOI: 10.7150/thno.67148] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022] Open
Abstract
The healing of chronic wounds is impaired by a lack of metabolic energy. In previous studies, we showed that physiological inorganic polyphosphate (polyP) is a generator of metabolic energy by forming ATP as a result of the enzymatic cleavage of the high-energy phosphoanhydride bonds of this polymer. Therefore, in the present study, we investigated whether the administration of polyP can substitute for the energy deficiency in chronic wound healing. Methods: PolyP was incorporated into collagen mats and applied in vitro and to patients in vivo. Results: (i) In vitro studies: Keratinocytes grown in vitro onto the polyP/collagen mats formed long microvilli to guide them to a favorable environment. HUVEC cells responded to polyP/collagen mats with an increased adhesion and migration propensity as well as penetration into the mats. (ii) In vivo - human clinical studies: In a “bench to bedside” process these promising in vitro results were translated from the laboratory into the clinic. In the proof-of-concept application, the engineered polyP/collagen mats were applied to chronic wounds in patients. Those mats impressively accelerated the re-epithelialization rate, with a reduction of the wound area to 65% after 3 weeks and to 36.6% and 22.5% after 6 and 9 weeks, respectively. Complete healing was achieved and no further treatment was necessary. Biopsy samples from the regenerating wound area showed predominantly myofibroblasts. The wound healing process was supported by the use of a polyP containing moisturizing solution. Conclusion: The results strongly recommend polyP as a beneficial component in mats for a substantial healing of chronic wounds.
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8
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Kim S, Le VH, Kim B, Kim CJ, Im SH, Kim KH. Longitudinal Label-Free Two-Photon Microscopy of Cellular Healing Processes in Non-Ablative Fractional Laser Wounds. Lasers Surg Med 2021; 53:1413-1426. [PMID: 34139024 DOI: 10.1002/lsm.23445] [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: 11/03/2020] [Revised: 05/26/2021] [Accepted: 05/31/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVES Wound healing is an important biomedical problem with various associated complications. Although cutaneous wound healing has been studied in vivo extensively using various optical imaging methods, early-stage cellular healing processes were difficult to study due to scab formation. The objective of this study is to demonstrate that minimal laser wounds and optical microscopy can access the detailed cellular healing processes of cutaneous wounds from the early stage. STUDY DESIGN/MATERIALS AND METHODS A non-ablative fractional laser (NAFL) and label-free two-photon microscopy (TPM) were used to induce minimal cutaneous wounds and to image the wounds in three-dimension. Sixteen hairless mice and a single human volunteer were used. NAFL wounds were induced in the hindlimb skin of the mice and in the forearm skin of the human subject. The NAFL wounds were longitudinally imaged during the healing period, starting from an hour post wound induction in the earliest and until 21 days. Cells in the wound and surrounding normal skin were visualized based on two-photon excited auto-fluorescence (TPAF), and cellular changes were tracked by analyzing longitudinal TPM images both qualitatively and quantitatively. Damage and recovery in the skin dermis were tracked by using the second harmonic generation (SHG) signal of collagen. Immunofluorescence and hematoxylin and eosin histology analysis were conducted to validate the TPM results of the murine skin. RESULTS Cellular healing processes in NAFL wounds and surroundings could be observed by longitudinal TPM. In the case of murine skin, various healing phases including inflammation, re-epithelization, granulation tissue formation, and late remodeling phase including collagen regeneration were observed in the same wounds owing to minimal or no scab formation. The re-epithelization process was analyzed quantitatively by measuring cell density and thickness of the epithelium in the wound surroundings. In the case of the human skin, the access inside the wound was blocked for a few days post wound induction due to scabs but the cellular changes in the wound surroundings were observed from the early stage. Cellular healing processes in the NAFL wound of the human skin were similar to those in murine skin. CONCLUSIONS The minimal NAFL wound model and label-free TPM demonstrated the cell level assessment of wound healing processes with applicability to human subjects. © 2021 Wiley Periodicals LLC.
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Affiliation(s)
- Seonghan Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Viet-Hoan Le
- Department of Life Sciences & Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Bumju Kim
- Department of Life Sciences & Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Chan Johng Kim
- Department of Life Sciences & Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Sin-Hyeog Im
- Department of Life Sciences & Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,ImmunoBiome Inc. Bio Open Innovation Center, 47 Jigok-ro, Nam-gu, Pohang, Gyeongbukdo, 37673, Republic of Korea
| | - Ki Hean Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
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9
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Miller C, Crampin E, Osborne JM. Maintaining the proliferative cell niche in multicellular models of epithelia. J Theor Biol 2021; 527:110807. [PMID: 34119497 DOI: 10.1016/j.jtbi.2021.110807] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 03/23/2021] [Accepted: 06/04/2021] [Indexed: 11/29/2022]
Abstract
The maintenance of the proliferative cell niche is critical to epithelial tissue morphology and function. In this paper we investigate how current modelling methods can result in the erroneous loss of proliferative cells from the proliferative cell niche. Using an established model of the inter-follicular epidermis we find there is a limit to the proliferative cell densities that can be maintained in the basal layer (the niche) if we do not include additional mechanisms to stop the loss of proliferative cells from the niche. We suggest a new methodology that enables maintenance of a desired homeostatic population of proliferative cells in the niche: a rotational force is applied to the two daughter cells during the mitotic phase of division to enforce a particular division direction. We demonstrate that this new methodology achieves this goal. This methodology reflects the regulation of the orientation of cell division.
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Affiliation(s)
- Claire Miller
- School of Mathematics and Statistics, The University of Melbourne, Parkville, Victoria 3010, Australia; Systems Biology Laboratory, School of Mathematics and Statistics and Department of Biomedical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Edmund Crampin
- Systems Biology Laboratory, School of Mathematics and Statistics and Department of Biomedical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia; School of Medicine, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Melbourne School of Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - James M Osborne
- School of Mathematics and Statistics, The University of Melbourne, Parkville, Victoria 3010, Australia.
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10
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Ho YH, Pan Y, Sun CK, Liao YH. Presence of intralesional melanocytes as a histopathological feature of actinic keratosis based on in vivo harmonic generation microscopy in Asians. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2021; 37:20-27. [PMID: 33476066 DOI: 10.1111/phpp.12595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/04/2020] [Accepted: 07/16/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND Most patients with actinic keratosis (AK) present with more than one lesion. Although histopathological examination is the gold standard for diagnosing this condition, performing an invasive skin biopsy for each AK is impractical. Thus, this study aimed to identify AK's morphological characteristics based on harmonic generation microscopy (HGM). Moreover, the correlation between features observed using HGM and histopathological grading of AK was examined. METHODS Lesions of seven patients were examined using HGM (n = 1, ex vivo and n = 6, in vivo), and histopathological examinations of the biopsy specimens were also performed. The features of each AK, based on HGM, were assessed and compared with corresponding standard histopathological findings. RESULTS Using the histopathological findings as a standard reference, HGM's accuracy in detecting features of AK lesions, such as hyperkeratosis, epidermal thinning, abnormal architecture, and atypical honeycomb pattern, was 100%. Approximately five (72%) patients had similar histopathological grades. Moreover, based on HGM, except for one patient with grade 1 AK, six (85.71%) patients had lesions with intraepidermal dendritic cell-like cells, representing melanocytes. CONCLUSION Harmonic generation microscopy can be used in vivo to provide critical diagnostic information with a resolution comparable to histopathological examination. In addition, intralesional melanocytes in AK, which may be correlated with disease severity, can be specifically enhanced using HGM.
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Affiliation(s)
- Yi-Hsin Ho
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Dermatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yi Pan
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
| | - Chi-Kuang Sun
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan.,Molecular Imaging Center and Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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11
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Orlando I, Basnett P, Nigmatullin R, Wang W, Knowles JC, Roy I. Chemical Modification of Bacterial Cellulose for the Development of an Antibacterial Wound Dressing. Front Bioeng Biotechnol 2020; 8:557885. [PMID: 33072722 PMCID: PMC7543992 DOI: 10.3389/fbioe.2020.557885] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/20/2020] [Indexed: 01/09/2023] Open
Abstract
Bacterial cellulose is a bacterially derived polymer with great potential for application in wound healing due to its innate properties such as high biocompatibility and biodegradability. In addition to this, it is naturally biosynthesized by bacteria as a hydrogel, which makes it an optimal substrate for the treatment of dry wounds, where additional moisture is required to facilitate the healing process. However, this polymer lacks antibacterial properties. As bacterial infections are becoming increasingly common and difficult to treat due to antimicrobial resistance, it is of crucial importance to develop strategies for the modification of cellulose to ensure protection against bacterial contamination. In this study, a green-chemistry approach was proposed for the functionalization of cellulose to introduce antibacterial functional groups. Two different active agents, namely glycidyl trimethylammonium chloride and glycidyl hexadecyl ether, were used for the covalent derivatization of the hydroxyl groups of glucose through a heterogeneous reaction in basic aqueous conditions. The modified material was chemically and mechanically characterized by solid-state techniques and rheological measurements. A biological assessment was then carried out both using bacterial cells and human keratinocytes. It was observed that the functionalization performed induced a reduction of approximately half of the bacterial population within 24 h of direct contact with Staphylococcus aureus subsp. aureus Rosenbach 6538PTM and Escherichia coli (Migula) Castellani and Chalmers ATCC® 8739TM (respectively, a reduction of 53% and 43% in the cell number was registered for the two strains). In parallel, cytotoxicity studies performed on keratinocytes (HaCaT cell line) showed cell viability in the range of 90 to 100% for up to 6 days of direct contact with both unmodified and modified samples. The morphology of the cells was also visually evaluated, and no significant difference was noted as compared to the control. Finally, the in vitro scratch assay evidenced good wound closure rates in the presence of the samples, with complete coverage of the scratched area after 5 days for both the modified cellulose and the positive control (i.e., keratinocytes growth medium). Overall, the modified hydrogel showed promising features, confirming its potential as an alternative substrate to develop a sustainable, antibacterial and biocompatible wound dressing.
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Affiliation(s)
- Isabel Orlando
- School of Biosciences, College of Liberal Arts and Sciences, University of Westminster, London, United Kingdom
- School of Medicine and Medical Sciences, Charles Institute of Dermatology, University College Dublin, Dublin, Ireland
- Université Clermont Auvergne, Centre Nationale de la Recherche Scientifique (CNRS), SIGMA Clermont, Institut de Chimie de Clermont-Ferrand (ICCF), Clermont–Ferrand, France
| | - Pooja Basnett
- School of Biosciences, College of Liberal Arts and Sciences, University of Westminster, London, United Kingdom
| | - Rinat Nigmatullin
- Advanced Composites Collaboration for Science and Innovation, University of Bristol, Bristol, United Kingdom
| | - Wenxin Wang
- School of Medicine and Medical Sciences, Charles Institute of Dermatology, University College Dublin, Dublin, Ireland
| | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, University College London (UCL) Eastman Dental Institute, London, United Kingdom
- Department of Nanobiomedical Science and BK21 Plus NBM, Global Research Center for Regenerative Medicine, Dankook University, Cheonan, South Korea
- The Discoveries Centre for Regenerative and Precision Medicine, University College London, London, United Kingdom
| | - Ipsita Roy
- Department of Materials Science and Engineering, Faculty of Engineering, University of Sheffield, Sheffield, United Kingdom
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12
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Yamamoto T, Aoyama Y. Detection of multinucleated giant cells in differentiated keratinocytes with herpes simplex virus and varicella zoster virus infections by modified Tzanck smear method. J Dermatol 2020; 48:21-27. [PMID: 32940400 DOI: 10.1111/1346-8138.15619] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/26/2020] [Indexed: 11/29/2022]
Abstract
Herpes simplex virus (HSV) and varicella zoster virus (VZV) infections induce the formation of intraepidermal vesicles containing acantholytic cells and multinucleated giant cells in the skin. The Tzanck smear is most commonly used to diagnose cutaneous herpetic infections, but it leads to many false-positive and -negative results. This study aimed at establishing a method detecting much larger multinucleated giant cells using the Tzanck smear because these cells characterize the viral cytopathic effect in skin infections. Morphological changes were analyzed among several layers of keratinocytes with HSV- or VZV-related cutaneous lesions, clinically and in vitro. We compared the sensitivity of the Tzanck smear to detect large acantholytic cells using both the removed roof tissue part (our approach) and the floor of the lesion (conventional approach) of a fresh vesicle. Large acantholytic cells were detected 2.0-times more frequently in the removed roof tissue part of the vesicle than in the floor of the lesion. Round cells were much larger in the removed roof tissue part of the vesicle corresponding to the granular or prickle layer of the epidermis than in its floor of the lesion corresponding to the basal or prickle layer with the Tzanck smear. Differentiated cultured keratinocytes formed multinucleated giant cells by cell-to-cell fusion with resolution of cell membrane with VZV infection. Differentiated keratinocytes promote multinucleated giant cell formation by cell-to-cell fusion with HSV-1 or VZV infection. To increase the sensitivity, the Tzanck smear should be prepared from the removed roof tissue part of a fresh vesicle to detect multinucleated giant cells in herpetic infections.
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Affiliation(s)
- Takenobu Yamamoto
- Department of Dermatology, Kawasaki Medical School, Kurashiki, Japan.,Department of Dermatology, Kawasaki Medical School General Medical Center, Okayama, Japan
| | - Yumi Aoyama
- Department of Dermatology, Kawasaki Medical School, Kurashiki, Japan
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13
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Recent Advances and the Potential for Clinical Use of Autofluorescence Detection of Extra-Ophthalmic Tissues. Molecules 2020; 25:molecules25092095. [PMID: 32365790 PMCID: PMC7248908 DOI: 10.3390/molecules25092095] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 02/07/2023] Open
Abstract
The autofluorescence (AF) characteristics of endogenous fluorophores allow the label-free assessment and visualization of cells and tissues of the human body. While AF imaging (AFI) is well-established in ophthalmology, its clinical applications are steadily expanding to other disciplines. This review summarizes clinical advances of AF techniques published during the past decade. A systematic search of the MEDLINE database and Cochrane Library databases was performed to identify clinical AF studies in extra-ophthalmic tissues. In total, 1097 articles were identified, of which 113 from internal medicine, surgery, oral medicine, and dermatology were reviewed. While comparable technological standards exist in diabetology and cardiology, in all other disciplines, comparability between studies is limited due to the number of differing AF techniques and non-standardized imaging and data analysis. Clear evidence was found for skin AF as a surrogate for blood glucose homeostasis or cardiovascular risk grading. In thyroid surgery, foremost, less experienced surgeons may benefit from the AF-guided intraoperative separation of parathyroid from thyroid tissue. There is a growing interest in AF techniques in clinical disciplines, and promising advances have been made during the past decade. However, further research and development are mandatory to overcome the existing limitations and to maximize the clinical benefits.
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14
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Paasch U, Said T. Stimulation of collagen and elastin production in-vivo using 1,540 nm Er:Glass laser: assessment of safety and efficacy. J COSMET LASER THER 2020; 22:77-83. [PMID: 32079432 DOI: 10.1080/14764172.2020.1728339] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Introduction: Induction of collagen and elastin remodeling in the human skin can be achieved by non-ablative fractional laser (NAFXL) and ablative fractional laser (AFXL). Our objective was to compare the safety, efficacy, tolerability, and ability to induce collagen and elastin remodeling of NAFXL versus AFXL in a series of treatments over time.Materials and Methods: In this prospective, proof of principle, single-case study, the safety, tolerability and efficacy of the laser systems were assessed via histopathology and clinical evaluations including photographs. Optical biopsies by means of multiphoton tomography (MPT) were used to evaluate the induction of collagen and elastin remodeling.Results: Treatments by both NAFXL and AFXL were well tolerated. The NAFXL system was found to be less painful and resulted in a shorter down- and healing times. MPT findings showed the superior capability of the AFXL procedure to induce collagen; on the other hand, elastin induction was more pronounced after NAFXL treatments.Conclusions: While NAFXL is as effective and safe as the traditional AFXL, it is better tolerated and has a shorter downtime. Serial optical biopsies over time over time can be a useful tool to assess the induction of collagen and elastin remodeling in the human skin.
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Affiliation(s)
- Uwe Paasch
- Department of Dermatology, Venereology and Allergology, University of Leipzig, 04103 Leipzig, Saxony, Germany
| | - Tamer Said
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
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15
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Dong P, Nikolaev V, Kröger M, Zoschke C, Darvin ME, Witzel C, Lademann J, Patzelt A, Schäfer-Korting M, Meinke MC. Barrier-disrupted skin: Quantitative analysis of tape and cyanoacrylate stripping efficiency by multiphoton tomography. Int J Pharm 2019; 574:118843. [PMID: 31759105 DOI: 10.1016/j.ijpharm.2019.118843] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/30/2019] [Accepted: 11/01/2019] [Indexed: 01/02/2023]
Abstract
Numerous studies have employed tape stripping (TS) or cyanoacrylate stripping (CS) to induce skin barrier disruption of the stratum corneum (SC) in human and porcine skin. However, the thickness of the remaining SC and the respective changes of the skin permeability have been rarely quantified. By using high-resolution multiphoton tomography, about 5 µm thick SC was found remaining on human skin after the performance of 30 times TS or 2 times CS. 50 tape strips or 4 times CS removed the entire human SC, but on porcine skin 2-3 µm thick SC was still left. TS can only reach the transition zone between the SC and the stratum granulosum because of the limited adhesion, whereas CS was able to remove viable skin layers. Permeation investigations on porcine skin revealed that the apparent permeability coefficient of the hydrophilic nitroxide spin 2,5,5-Tetramethyl-1-pyrrolidinyloxy-3-carboxylic acid increased 15-, 18-, and 21-fold when the SC amount remaining in the skin was 30%, 16%, and 8%, respectively. It is recommended to use at most 30 times TS or 3 times CS to obtain ex vivo barrier-disrupted skin that mimics diseased skin. The study provides quantitative information for the utility of TS and CS in skin penetration research.
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Affiliation(s)
- Pin Dong
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Berlin, Germany
| | - Viktor Nikolaev
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Berlin, Germany; Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences (ISPMS SB RAS), Tomsk, Russia; Tomsk State University, Faculty of Physics, Tomsk, Russia
| | - Marius Kröger
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Berlin, Germany
| | - Christian Zoschke
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Berlin, Germany
| | - Maxim E Darvin
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Berlin, Germany
| | - Christian Witzel
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Division of Plastic and Reconstructive Surgery, Department of Surgery, CVK CCM, Berlin, Germany
| | - Jürgen Lademann
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Berlin, Germany
| | - Alexa Patzelt
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Berlin, Germany
| | - Monika Schäfer-Korting
- Freie Universität Berlin, Institute of Pharmacy (Pharmacology & Toxicology), Berlin, Germany
| | - Martina C Meinke
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Dermatology, Venereology and Allergology, Berlin, Germany.
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16
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van den Akker PC, Pasmooij AMG, Joenje H, Hofstra RMW, te Meerman GJ, Jonkman MF. A "late-but-fitter revertant cell" explains the high frequency of revertant mosaicism in epidermolysis bullosa. PLoS One 2018; 13:e0192994. [PMID: 29470523 PMCID: PMC5823395 DOI: 10.1371/journal.pone.0192994] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 02/03/2018] [Indexed: 12/20/2022] Open
Abstract
Revertant mosaicism, or "natural gene therapy", is the phenomenon in which germline mutations are corrected by somatic events. In recent years, revertant mosaicism has been identified in all major types of epidermolysis bullosa, the group of heritable blistering disorders caused by mutations in the genes encoding epidermal adhesion proteins. Moreover, revertant mosaicism appears to be present in all patients with a specific subtype of recessive epidermolysis bullosa. We therefore hypothesized that revertant mosaicism should be expected at least in all patients with recessive forms of epidermolysis bullosa. Naturally corrected, patient-own cells are of extreme interest for their promising therapeutic potential, and their presence in all patients would open exciting, new treatment perspectives to those patients. To test our hypothesis, we determined the probability that single nucleotide reversions occur in patients' skin using a mathematical developmental model. According to our model, reverse mutations are expected to occur frequently (estimated 216x) in each patient's skin. Reverse mutations should, however, occur early in embryogenesis to be able to drive the emergence of recognizable revertant patches, which is expected to occur in only one per ~10,000 patients. This underestimate, compared to our clinical observations, can be explained by the "late-but-fitter revertant cell" hypothesis: reverse mutations arise at later stages of development, but provide revertant cells with a selective growth advantage in vivo that drives the development of recognizable healthy skin patches. Our results can be extrapolated to any other organ with stem cell division numbers comparable to skin, which may offer novel future therapeutic options for other genetic conditions if these revertant cells can be identified and isolated.
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Affiliation(s)
- Peter C. van den Akker
- University of Groningen, University Medical Center Groningen, Department of Genetics, Groningen, the Netherlands
- University of Groningen, University Medical Center Groningen, Department of Dermatology, Groningen, the Netherlands
| | - Anna M. G. Pasmooij
- University of Groningen, University Medical Center Groningen, Department of Dermatology, Groningen, the Netherlands
| | - Hans Joenje
- Department of Clinical Genetics and the Cancer Center Amsterdam/VUmc Institute for Cancer and Immunology, VU University Medical Center, Amsterdam, the Netherlands
| | - Robert M. W. Hofstra
- Department of Clinical Genetics, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Gerard J. te Meerman
- University of Groningen, University Medical Center Groningen, Department of Genetics, Groningen, the Netherlands
| | - Marcel F. Jonkman
- University of Groningen, University Medical Center Groningen, Department of Dermatology, Groningen, the Netherlands
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17
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Springer S, Zieger M, Hipler UC, König K, Lademann J, Kaatz M, Koehler MJ. Non‐invasive evaluation of human mucosal structures by multiphoton laser scanning tomography in vitro. Skin Res Technol 2018; 24:445-449. [DOI: 10.1111/srt.12451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/01/2018] [Indexed: 12/24/2022]
Affiliation(s)
- S. Springer
- Department of DermatologyUniversity Hospital Jena Jena Germany
| | - M. Zieger
- Department of DermatologyUniversity Hospital Jena Jena Germany
- Department of DermatologySRH Wald‐Klinikum Gera GmbH Gera GmbH Germany
| | - U. C. Hipler
- Department of DermatologyUniversity Hospital Jena Jena Germany
| | | | - J. Lademann
- Department of Dermatology, Venereology and AllergologyCenter of Experimental and Cutaneous Physiology (CCP)Charité‐Universitätsmedizin Berlin Berlin Germany
| | - M. Kaatz
- Department of DermatologyUniversity Hospital Jena Jena Germany
- Department of DermatologySRH Wald‐Klinikum Gera GmbH Gera GmbH Germany
| | - M. J. Koehler
- Department of DermatologyUniversity Hospital Jena Jena Germany
- Department of DermatologySRH Zentralklinikum Suhl Suhl Germany
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18
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Wu Z, Rademakers T, Kiessling F, Vogt M, Westein E, Weber C, Megens RT, van Zandvoort M. Multi-photon microscopy in cardiovascular research. Methods 2017; 130:79-89. [DOI: 10.1016/j.ymeth.2017.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/27/2017] [Accepted: 04/11/2017] [Indexed: 01/26/2023] Open
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19
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Springer S, Zieger M, Böttcher A, Lademann J, Kaatz M. Examination of wound healing after curettage by multiphoton tomography of human skin in vivo. Skin Res Technol 2017; 23:452-458. [DOI: 10.1111/srt.12355] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2017] [Indexed: 12/31/2022]
Affiliation(s)
- S. Springer
- Department of Dermatology and Allergology; University Hospital; Jena Germany
| | - M. Zieger
- Department of Dermatology and Allergology; University Hospital; Jena Germany
- Department of Dermatology and Allergology; SRH Wald-Klinikum Gera GmbH; Gera Germany
| | - A. Böttcher
- Department of Dermatology and Allergology; SRH Wald-Klinikum Gera GmbH; Gera Germany
| | - J. Lademann
- Center of Experimental and Cutaneous Physiology (CCP); Department of Dermatology, Venereology and Allergology; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - M. Kaatz
- Department of Dermatology and Allergology; University Hospital; Jena Germany
- Department of Dermatology and Allergology; SRH Wald-Klinikum Gera GmbH; Gera Germany
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20
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Sütterlin T, Tsingos E, Bensaci J, Stamatas GN, Grabe N. A 3D self-organizing multicellular epidermis model of barrier formation and hydration with realistic cell morphology based on EPISIM. Sci Rep 2017; 7:43472. [PMID: 28262741 PMCID: PMC5338006 DOI: 10.1038/srep43472] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 01/24/2017] [Indexed: 11/09/2022] Open
Abstract
The epidermis and the stratum corneum (SC) as its outermost layer have evolved to protect the body from evaporative water loss to the environment. To morphologically represent the extremely flattened cells of the SC - and thereby the epidermal barrier - in a multicellular computational model, we developed a 3D biomechanical model (BM) based on ellipsoid cell shapes. We integrated the BM in the multicellular modelling and simulation platform EPISIM. We created a cell behavioural model (CBM) with EPISIM encompassing regulatory feedback loops between the epidermal barrier, water loss to the environment, and water and calcium flow within the tissue. This CBM allows a small number of stem cells to initiate self-organizing epidermal stratification, yielding the spontaneous emergence of water and calcium gradients comparable to experimental data. We find that the 3D in silico epidermis attains homeostasis most quickly at high ambient humidity, and once in homeostasis the epidermal barrier robustly buffers changes in humidity. Our model yields an in silico epidermis with a previously unattained realistic morphology, whose cell neighbour topology is validated with experimental data obtained from in vivo images. This work paves the way to computationally investigate how an impaired SC barrier precipitates disease.
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Affiliation(s)
- Thomas Sütterlin
- Hamamatsu TIGA Center, BioQuant, Heidelberg University, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany.,National Center for Tumor Diseases, Dept. of Medical Oncology, Im Neuenheimer Feld 460, 69120 Heidelberg, Germany
| | - Erika Tsingos
- Hamamatsu TIGA Center, BioQuant, Heidelberg University, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany.,Centre for Organismal Studies, Heidelberg University, Im Neuenheimer Feld 230, 69120 Heidelberg, Germany
| | - Jalil Bensaci
- Emerging Science &Innovation, Johnson &Johnson, Santé Beauté France, 1 rue Camille Desmoulins, 92130 Issy les Moulineaux, France
| | - Georgios N Stamatas
- Emerging Science &Innovation, Johnson &Johnson, Santé Beauté France, 1 rue Camille Desmoulins, 92130 Issy les Moulineaux, France
| | - Niels Grabe
- Hamamatsu TIGA Center, BioQuant, Heidelberg University, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany.,National Center for Tumor Diseases, Dept. of Medical Oncology, Im Neuenheimer Feld 460, 69120 Heidelberg, Germany
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21
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Pastore MN, Studier H, Bonder CS, Roberts MS. Non-invasive metabolic imaging of melanoma progression. Exp Dermatol 2017; 26:607-614. [PMID: 27992081 DOI: 10.1111/exd.13274] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2016] [Indexed: 12/17/2022]
Abstract
Skin cancer is associated with abnormal cellular metabolism which if identified early introduces the possibility of intervention to prevent its progress to a deadly metastatic stage. This study combines multiphoton microscopy with fluorescence lifetime imaging (FLIM) using a syngeneic melanoma mouse model, to detect changes in metabolic state of single epidermal cells as a metabolic marker to monitor the progress of tumor growth. This method utilizes imaging of the ratio of the amounts of the free and protein-bound forms of the intracellular autofluorescent metabolic co-enzyme nicotinamide adenine dinucleotide (NADH). Here, we investigate the impact of the primary tumor lesion on the epidermal layers at three different growth stages of melanoma lesion compared to normal skin as a control. We showed a significant increase in the free-to-bound NADH ratio with the growth of the solid melanoma tumor, while concurrently the short and the long lifetime components of NADH remained constant. These results demonstrate the ability of FLIM for rapid, non-invasive and sensitive assessment of melanoma progression revealing its potential as a diagnostic tool for melanoma detection and as an aid for melanoma staging.
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Affiliation(s)
- Michael N Pastore
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia
| | - Hauke Studier
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia
| | - Claudine S Bonder
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia
| | - Michael S Roberts
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia.,Therapeutics Research Centre, School of Medicine, Translational Research Institute, University of Queensland, Brisbane, Qld, Australia
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22
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Newton VL, Bradley RS, Seroul P, Cherel M, Griffiths CEM, Rawlings AV, Voegeli R, Watson REB, Sherratt MJ. Novel approaches to characterize age-related remodelling of the dermal-epidermal junction in 2D, 3D andin vivo. Skin Res Technol 2016; 23:131-148. [DOI: 10.1111/srt.12312] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2016] [Indexed: 12/21/2022]
Affiliation(s)
- V. L. Newton
- Centre for Dermatology Research; Institute of Inflammation & Repair; Manchester Academic Health Science Centre; University of Manchester; Manchester UK
- The Dermatology Centre; Salford Royal NHS Foundation Trust; Salford UK
| | - R. S. Bradley
- School of Materials; The University of Manchester; Manchester UK
| | | | | | - C. E. M. Griffiths
- Centre for Dermatology Research; Institute of Inflammation & Repair; Manchester Academic Health Science Centre; University of Manchester; Manchester UK
- The Dermatology Centre; Salford Royal NHS Foundation Trust; Salford UK
| | | | - R. Voegeli
- DSM Nutritional Products Ltd; Kaiseraugst Switzerland
| | - R. E. B. Watson
- Centre for Dermatology Research; Institute of Inflammation & Repair; Manchester Academic Health Science Centre; University of Manchester; Manchester UK
- The Dermatology Centre; Salford Royal NHS Foundation Trust; Salford UK
| | - M. J. Sherratt
- Centre for Tissue Injury and Repair; Institute of Inflammation & Repair; Manchester Academic Health Science Centre; The University of Manchester; Manchester UK
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23
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Honda T, Otsuka A, Kabashima K. Novel insights into cutaneous immune systems revealed by in vivo imaging. Allergol Int 2016; 65:228-34. [PMID: 27021658 DOI: 10.1016/j.alit.2016.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 02/18/2016] [Indexed: 12/26/2022] Open
Abstract
In vivo imaging is a novel experimental approach for biological research. Multiphoton microscopy (MPM), a type of fluorescence microscopy, is a new tool for in vivo imaging analysis. MPM allows observation of both tissue structures and cell behaviors or cell-cell interactions in living animals in real time. Skin is an ideal tissue for MPM analysis as it is directly accessible to the microscope. In the skin, immune cells cooperate to maintain skin homeostasis or to exert immune responses against foreign antigens. In vivo imaging by MPM analysis provides precise information on cell dynamics in the skin, and has significantly expanded our knowledge of the cutaneous immune system. In this review, we will discuss recent insights related to the mechanisms of allergic skin inflammation that have been revealed by MPM analysis.
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24
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Hattori M, Kawamura G, Kojima R, Kamiya M, Urano Y, Ozawa T. Confocal Bioluminescence Imaging for Living Tissues with a Caged Substrate of Luciferin. Anal Chem 2016; 88:6231-8. [DOI: 10.1021/acs.analchem.5b04142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mitsuru Hattori
- Department of Chemistry, School
of Science, ‡Graduate School of Pharmaceutical
Sciences, and §Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Hongo, Tokyo 113-0033, Japan
| | - Genki Kawamura
- Department of Chemistry, School
of Science, ‡Graduate School of Pharmaceutical
Sciences, and §Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Hongo, Tokyo 113-0033, Japan
| | - Ryosuke Kojima
- Department of Chemistry, School
of Science, ‡Graduate School of Pharmaceutical
Sciences, and §Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Hongo, Tokyo 113-0033, Japan
| | - Mako Kamiya
- Department of Chemistry, School
of Science, ‡Graduate School of Pharmaceutical
Sciences, and §Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Hongo, Tokyo 113-0033, Japan
| | - Yasuteru Urano
- Department of Chemistry, School
of Science, ‡Graduate School of Pharmaceutical
Sciences, and §Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Hongo, Tokyo 113-0033, Japan
| | - Takeaki Ozawa
- Department of Chemistry, School
of Science, ‡Graduate School of Pharmaceutical
Sciences, and §Graduate School of Medicine, The University of Tokyo, 7-3-1 Bunkyo-ku, Hongo, Tokyo 113-0033, Japan
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25
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Klemp M, Meinke MC, Weinigel M, Röwert-Huber HJ, König K, Ulrich M, Lademann J, Darvin ME. Comparison of morphologic criteria for actinic keratosis and squamous cell carcinoma using in vivo multiphoton tomography. Exp Dermatol 2016; 25:218-22. [PMID: 26659897 DOI: 10.1111/exd.12912] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2015] [Indexed: 12/25/2022]
Abstract
The routine diagnostic procedure of actinic keratosis (AK) and invasive squamous cell carcinoma (SCC) is a histological examination after taking a biopsy. In the past decades, non-invasive optical methods for skin examination have been developed. Patients with clinical diagnosis of AK or SCC were examined. The morphological criteria were determined for healthy, AK and SCC skin and compared for statistically significant differences. In this study, the applicability of multiphoton tomography (MPT) as an in vivo diagnostic tool for AK and SCC was evaluated. Changes in the morphology of the keratinocytes such as broadened epidermis, large intercellular spaces, enlarged nucleus and a large variance in cell shape could easily be recognized. The cell nuclei of AK and SCC were significantly larger compared to healthy skin cells in all cell layers. The nucleus-cytoplasm ratio was also significantly higher for AK and SCC than for the healthy skin cells. It was even higher in SCC compared to spinous and basal cell layer of AK. The cell density in AK and SCC was significantly lower than in the basal and spinous cell layers of healthy skin. In SCC, the cell density was significantly lower than in AK. Concerning the intercellular spaces, significant differences were found for AK and healthy skin in spinous and basal cell layer and for SCC compared to AK and healthy skin. In this study, MPT proved to be a valuable non-invasive imaging method for in vivo detection and discrimination of AK and SCC from healthy skin.
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Affiliation(s)
- Marisa Klemp
- Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Martina C Meinke
- Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | | | - Hans-Joachim Röwert-Huber
- Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Karsten König
- JenLab GmbH, Jena, Germany.,Department of Biophotonics and Laser Technology, Saarland University, Saarbrücken, Germany
| | | | - Juergen Lademann
- Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Maxim E Darvin
- Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
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26
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Koehler MJ, Kellner K, Kaatz M, Hipler UC. Epidermal changes during UVB phototherapy assessed by multiphoton laser tomography. Skin Res Technol 2016; 22:437-442. [PMID: 26853735 DOI: 10.1111/srt.12284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2015] [Indexed: 02/03/2023]
Abstract
BACKGROUND Multiphoton laser tomography (MPT) is a non-invasive technique that allows imaging of skin in vivo with very high spatial resolution and contrast. Previous work of our group has demonstrated that known morphological changes due to erythematogenic ultraviolet B (UVB) irradiation may be imaged in vivo by MPT. The present work investigated if morphological skin changes known from experimental erythematogenic UVB irradiation are also demonstrable in the course of a standard phototherapy regime that implies suberythematogenic doses of narrow band UVB. METHODS Sixteen patients with psoriasis vulgaris receiving a narrow band phototherapy were included. A test field and a light-protected control field were measured with the multiphoton tomograph DermaInspect® at four time points: at baseline, the next day, after 3 days and at the day of the last exposure. RESULTS In the course of the UVB phototherapy, spongiosis and pleomorphy as parameters of inflammation and cellular damage did not show significant changes. By contrast, an adaptive skin reaction with significant changes of keratosis and pigmentation was observed. CONCLUSION MPT is a suitable technique for the investigation of qualitative and quantitative skin changes after UVB irradiation. After suberythematogenic UVB irradiation, photoadaptive skin changes, but no cellular damage can be observed with MPT.
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Affiliation(s)
- M J Koehler
- Department of Dermatology, University Hospital Jena, Jena, Germany.
| | - K Kellner
- Department of Dermatology, University Hospital Jena, Jena, Germany.,ENT Department, University Hospital Leipzig, Leipzig, Germany
| | - M Kaatz
- Department of Dermatology, SRH Waldklinikum Gera, Gera, Germany
| | - U-C Hipler
- Department of Dermatology, University Hospital Jena, Jena, Germany
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27
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Springer S, Zieger M, Koenig K, Kaatz M, Lademann J, Darvin ME. Optimization of the measurement procedure during multiphoton tomography of human skinin vivo. Skin Res Technol 2015; 22:356-62. [DOI: 10.1111/srt.12273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2015] [Indexed: 11/29/2022]
Affiliation(s)
- S. Springer
- Department of Dermatology and Allergology; University Hospital; Jena Germany
| | - M. Zieger
- Department of Dermatology and Allergology; University Hospital; Jena Germany
| | - K. Koenig
- Faculty of Physics and Mechatronics; Saarland University; Saarbrücken Germany
- JenLab GmbH; Jena Germany
| | - M. Kaatz
- Department of Dermatology and Allergology; University Hospital; Jena Germany
- Department of Dermatology and Allergology; SRH Waldklinikum Gera gGmbH; Gera Germany
| | - J. Lademann
- Center of Experimental and Cutaneous Physiology (CCP); Department of Dermatology, Venereology and Allergology; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - M. E. Darvin
- Center of Experimental and Cutaneous Physiology (CCP); Department of Dermatology, Venereology and Allergology; Charité-Universitätsmedizin Berlin; Berlin Germany
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Liao YH, Kuo WC, Chou SY, Tsai CS, Lin GL, Tsai MR, Shih YT, Lee GG, Sun CK. Quantitative analysis of intrinsic skin aging in dermal papillae by in vivo harmonic generation microscopy. BIOMEDICAL OPTICS EXPRESS 2014; 5:3266-79. [PMID: 25401037 PMCID: PMC4230862 DOI: 10.1364/boe.5.003266] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/25/2014] [Accepted: 08/08/2014] [Indexed: 05/20/2023]
Abstract
Chronological skin aging is associated with flattening of the dermal-epidermal junction (DEJ), but to date no quantitative analysis focusing on the aging changes in the dermal papillae (DP) has been performed. The aim of the study is to determine the architectural changes and the collagen density related to chronological aging in the dermal papilla zone (DPZ) by in vivo harmonic generation microscopy (HGM) with a sub-femtoliter spatial resolution. We recruited 48 Asian subjects and obtained in vivo images on the sun-protected volar forearm. Six parameters were defined to quantify 3D morphological changes of the DPZ, which we analyzed both manually and computationally to study their correlation with age. The depth of DPZ, the average height of isolated DP, and the 3D interdigitation index decreased with age, while DP number density, DP volume, and the collagen density in DP remained constant over time. In vivo high-resolution HGM technology has uncovered chronological aging-related variations in DP, and sheds light on real-time quantitative skin fragility assessment and disease diagnostics based on collagen density and morphology.
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Affiliation(s)
- Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 10002, Taiwan
- Molecular Imaging Center, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Cheng Kuo
- Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Sin-Yo Chou
- Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
| | - Cheng-Shiun Tsai
- Department of Electrical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Guan-Liang Lin
- Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei 10617, Taiwan
| | - Ming-Rung Tsai
- Molecular Imaging Center, National Taiwan University, Taipei 10617, Taiwan
| | - Yuan-Ta Shih
- Molecular Imaging Center, National Taiwan University, Taipei 10617, Taiwan
| | - Gwo-Giun Lee
- Department of Electrical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Chi-Kuang Sun
- Molecular Imaging Center, National Taiwan University, Taipei 10617, Taiwan
- Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei 10617, Taiwan
- Research Center for Applied Sciences and Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
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Koehler MJ, Kellner K, Hipler UC, Kaatz M. Acute UVB-induced epidermal changes assessed by multiphoton laser tomography. Skin Res Technol 2014; 21:137-43. [PMID: 25066913 DOI: 10.1111/srt.12168] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2014] [Indexed: 01/20/2023]
Abstract
BACKGROUND In vivo multiphoton tomography (MPT) of human skin has become a valuable tool for non-invasive examination of morphological and biophysical skin properties and their alterations. So far, skin changes after UVB irradiation were mainly evaluated clinically and histologically. The present study aimed at non-invasive imaging of histological changes during acute UVB irradiation by multiphoton laser tomography. METHODS In 10 volunteers, five areas were irradiated once with an erythematous UVB dose. Multiphoton measurements were performed four times, i.e. before irradiation (baseline), and 24, 48 and 72 h after irradiation, respectively. The data were evaluated for changes of epidermal pleomorphy, spongiosis, pigmentation and thickness. RESULTS The four parameters were altered significantly by acute UVB irradiation, i.e. epidermal pleomorphy, spongiosis, pigmentation and thickness increased within 72 h after irradiation. CONCLUSION Thus, the study has shown that typical epidermal changes induced by acute UVB irradiation can be evaluated by MPT.
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Affiliation(s)
- M J Koehler
- Department of Dermatology, SRH Waldklinikum Gera, Gera, Germany; Department of Dermatology, University Hospital Jena, Jena, Germany
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Yew E, Rowlands C, So PTC. Application of Multiphoton Microscopy in Dermatological Studies: a Mini-Review. JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES 2014; 7:1330010. [PMID: 25075226 PMCID: PMC4112132 DOI: 10.1142/s1793545813300103] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This review summarizes the historical and more recent developments of multiphoton microscopy, as applied to dermatology. Multiphoton microscopy offers several advantages over competing microscopy techniques: there is an inherent axial sectioning, penetration depths that compete well with confocal microscopy on account of the use of near-infrared light, and many two-photon contrast mechanisms, such as second-harmonic generation, have no analogue in one-photon microscopy. While the penetration depths of photons into tissue are typically limited on the order of hundreds of microns, this is of less concern in dermatology, as the skin is thin and readily accessible. As a result, multiphoton microscopy in dermatology has generated a great deal of interest, much of which is summarized here. The review covers the interaction of light and tissue, as well as the various considerations that must be made when designing an instrument. The state of multiphoton microscopy in imaging skin cancer and various other diseases is also discussed, along with the investigation of aging and regeneration phenomena, and finally, the use of multiphoton microscopy to analyze the transdermal transport of drugs, cosmetics and other agents is summarized. The review concludes with a look at potential future research directions, especially those that are necessary to push these techniques into widespread clinical acceptance.
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Affiliation(s)
- Elijah Yew
- Singapore-MIT Alliance for Research and Technology (SMART), 1 CREATE Way CREATE Tower, Singapore 138602
| | - Christopher Rowlands
- Department of Biological Engineering Massachusetts Institute of Technology 77 Massachusetts Ave, Cambridge MA 02139, USA
| | - Peter T. C. So
- Singapore-MIT Alliance for Research and Technology (SMART), 1 CREATE Way CREATE Tower, Singapore 138602
- Department of Biological Engineering Massachusetts Institute of Technology 77 Massachusetts Ave, Cambridge MA 02139, USA
- Department of Mechanical Engineering Massachusetts Institute of Technology 77 Massachusetts Ave, Cambridge MA 02139, USA
- GR Harrison Spectroscopy Laboratory 77 Massachusetts Ave, Cambridge MA 02139, USA
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Li X, Upadhyay AK, Bullock AJ, Dicolandrea T, Xu J, Binder RL, Robinson MK, Finlay DR, Mills KJ, Bascom CC, Kelling CK, Isfort RJ, Haycock JW, MacNeil S, Smallwood RH. Skin stem cell hypotheses and long term clone survival--explored using agent-based modelling. Sci Rep 2013; 3:1904. [PMID: 23712735 PMCID: PMC3664904 DOI: 10.1038/srep01904] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 05/07/2013] [Indexed: 12/20/2022] Open
Abstract
Epithelial renewal in skin is achieved by the constant turnover and differentiation of keratinocytes. Three popular hypotheses have been proposed to explain basal keratinocyte regeneration and epidermal homeostasis: 1) asymmetric division (stem-transit amplifying cell); 2) populational asymmetry (progenitor cell with stochastic fate); and 3) populational asymmetry with stem cells. In this study, we investigated lineage dynamics using these hypotheses with a 3D agent-based model of the epidermis. The model simulated the growth and maintenance of the epidermis over three years. The offspring of each proliferative cell was traced. While all lineages were preserved in asymmetric division, the vast majority were lost when assuming populational asymmetry. The third hypothesis provided the most reliable mechanism for self-renewal by preserving genetic heterogeneity in quiescent stem cells, and also inherent mechanisms for skin ageing and the accumulation of genetic mutation.
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Affiliation(s)
- X Li
- Department of Computer Science, University of Sheffield, Sheffield, United Kingdom.
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Watson JM, Marion SL, Rice PF, Bentley DL, Besselsen DG, Utzinger U, Hoyer PB, Barton JK. In vivo time-serial multi-modality optical imaging in a mouse model of ovarian tumorigenesis. Cancer Biol Ther 2013; 15:42-60. [PMID: 24145178 DOI: 10.4161/cbt.26605] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Identification of the early microscopic changes associated with ovarian cancer may lead to development of a diagnostic test for high-risk women. In this study we use optical coherence tomography (OCT) and multiphoton microscopy (MPM) (collecting both two photon excited fluorescence [TPEF] and second harmonic generation [SHG]) to image mouse ovaries in vivo at multiple time points. We demonstrate the feasibility of imaging mouse ovaries in vivo during a long-term survival study and identify microscopic changes associated with early tumor development. These changes include alterations in tissue microstructure, as seen by OCT, alterations in cellular fluorescence and morphology, as seen by TPEF, and remodeling of collagen structure, as seen by SHG. These results suggest that a combined OCT-MPM system may be useful for early detection of ovarian cancer.
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Affiliation(s)
| | - Samuel L Marion
- Physiology Department; University of Arizona; Tucson, AZ USA
| | - Photini F Rice
- Biomedical Engineering; University of Arizona; Tucson, AZ USA
| | - David L Bentley
- Biomedical Engineering; University of Arizona; Tucson, AZ USA
| | | | - Urs Utzinger
- Biomedical Engineering; University of Arizona; Tucson, AZ USA
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Decencière E, Tancrède-Bohin E, Dokládal P, Koudoro S, Pena AM, Baldeweck T. Automatic 3D segmentation of multiphoton images: a key step for the quantification of human skin. Skin Res Technol 2013; 19:115-24. [PMID: 23441573 DOI: 10.1111/srt.12019] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2012] [Indexed: 11/29/2022]
Abstract
BACKGROUND/PURPOSE Multiphoton microscopy has emerged in the past decade as a useful noninvasive imaging technique for in vivo human skin characterization. However, it has not been used until now in evaluation clinical trials, mainly because of the lack of specific image processing tools that would allow the investigator to extract pertinent quantitative three-dimensional (3D) information from the different skin components. METHODS We propose a 3D automatic segmentation method of multiphoton images which is a key step for epidermis and dermis quantification. This method, based on the morphological watershed and graph cuts algorithms, takes into account the real shape of the skin surface and of the dermal-epidermal junction, and allows separating in 3D the epidermis and the superficial dermis. RESULTS The automatic segmentation method and the associated quantitative measurements have been developed and validated on a clinical database designed for aging characterization. The segmentation achieves its goals for epidermis-dermis separation and allows quantitative measurements inside the different skin compartments with sufficient relevance. CONCLUSIONS This study shows that multiphoton microscopy associated with specific image processing tools provides access to new quantitative measurements on the various skin components. The proposed 3D automatic segmentation method will contribute to build a powerful tool for characterizing human skin condition. To our knowledge, this is the first 3D approach to the segmentation and quantification of these original images.
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Affiliation(s)
- Etienne Decencière
- Centre de Morphologie Mathématique, Mathématiques et Systèmes, MINES ParisTech, Fontainebleau, France.
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Liao YH, Chen SY, Chou SY, Wang PH, Tsai MR, Sun CK. Determination of chronological aging parameters in epidermal keratinocytes by in vivo harmonic generation microscopy. BIOMEDICAL OPTICS EXPRESS 2013; 4:77-88. [PMID: 23304649 PMCID: PMC3539190 DOI: 10.1364/boe.4.000077] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 10/29/2012] [Accepted: 10/30/2012] [Indexed: 05/04/2023]
Abstract
Skin aging is an important issue in geriatric and cosmetic dermatology. To quantitatively analyze changes in keratinocytes related to intrinsic aging, we exploited a 1230 nm-based in vivo harmonic generation microscopy, combining second- and third-harmonic generation modalities. 52 individuals (21 men and 31 women, age range 19-79) were examined on the sun-protected volar forearm. Through quantitative analysis by the standard algorithm provided, we found that the cellular and nuclear size of basal keratinocytes, but not that of granular cells, was significantly increased with advancing age. The cellular and nuclear areas, which have an increase of 0.51 μm(2) and 0.15 μm(2) per year, respectively, can serve as scoring indices for intrinsic skin aging.
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Affiliation(s)
- Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and College of Medicine, National Taiwan University, No.7, Chung-Shan South Road, Taipei 10002, Taiwan
- Molecular Imaging Center, National Taiwan University, No.1, Sec.4, Roosevelt Road, Taipei 10617, Taiwan
| | - Szu-Yu Chen
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, No.1, Sec.4, Roosevelt Road, Taipei 10617, Taiwan
- Graduate Institute of Optics and Photonics, National Central University, No.300, Jhongda Road, Jhongli City, Taoyuan 32001, Taiwan
| | - Sin-Yo Chou
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, No.1, Sec.4, Roosevelt Road, Taipei 10617, Taiwan
| | - Pei-Hsun Wang
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, No.1, Sec.4, Roosevelt Road, Taipei 10617, Taiwan
| | - Ming-Rung Tsai
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, No.1, Sec.4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chi-Kuang Sun
- Molecular Imaging Center, National Taiwan University, No.1, Sec.4, Roosevelt Road, Taipei 10617, Taiwan
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, No.1, Sec.4, Roosevelt Road, Taipei 10617, Taiwan
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Najari BB, Ramasamy R, Sterling J, Aggarwal A, Sheth S, Li PS, Dubin JM, Goldenberg S, Jain M, Robinson BD, Shevchuk M, Scherr DS, Goldstein M, Mukherjee S, Schlegel PN. Pilot Study of the Correlation of Multiphoton Tomography of Ex Vivo Human Testis with Histology. J Urol 2012; 188:538-43. [DOI: 10.1016/j.juro.2012.03.124] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Indexed: 11/26/2022]
Affiliation(s)
- Bobby B. Najari
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Ranjith Ramasamy
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Joshua Sterling
- Department of Biochemistry, Weill Cornell Medical College, New York, New York
| | - Amit Aggarwal
- Department of Biochemistry, Weill Cornell Medical College, New York, New York
| | - Seema Sheth
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Philip S. Li
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Justin M. Dubin
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Sagit Goldenberg
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Manu Jain
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Brian D. Robinson
- Department of Pathology, Weill Cornell Medical College, New York, New York
| | - Maria Shevchuk
- Department of Pathology, Weill Cornell Medical College, New York, New York
| | - Douglas S. Scherr
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Marc Goldstein
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Sushmita Mukherjee
- Department of Biochemistry, Weill Cornell Medical College, New York, New York
| | - Peter N. Schlegel
- Department of Urology, Weill Cornell Medical College, New York, New York
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Ramasamy R, Sterling J, Li PS, Robinson BD, Parekattil S, Chen J, Felsen D, Mukherjee S, Goldstein M, Schlegel PN. Multiphoton Imaging and Laser Ablation of Rodent Spermatic Cord Nerves: Potential Treatment for Patients With Chronic Orchialgia. J Urol 2012; 187:733-8. [DOI: 10.1016/j.juro.2011.09.143] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Indexed: 11/29/2022]
Affiliation(s)
- Ranjith Ramasamy
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Joshua Sterling
- Department of Biochemistry, Weill Cornell Medical College, New York, New York
| | - Philip S. Li
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Brian D. Robinson
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York
| | - Sijo Parekattil
- Department of Urology, Winter Haven Hospital, University of Florida, Winter Haven, Florida
| | - Jie Chen
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Diane Felsen
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Sushmita Mukherjee
- Department of Biochemistry, Weill Cornell Medical College, New York, New York
| | - Marc Goldstein
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Peter N. Schlegel
- Department of Urology, Weill Cornell Medical College, New York, New York
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38
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Multiphoton microscopy. a powerful tool in skin research and topical drug delivery science. J Drug Deliv Sci Technol 2012. [DOI: 10.1016/s1773-2247(12)50036-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Ramasamy R, Sterling J, Fisher ES, Li PS, Jain M, Robinson BD, Shevchuck M, Huland D, Xu C, Mukherjee S, Schlegel PN. Identification of Spermatogenesis With Multiphoton Microscopy: An Evaluation in a Rodent Model. J Urol 2011; 186:2487-92. [DOI: 10.1016/j.juro.2011.07.081] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Indexed: 11/25/2022]
Affiliation(s)
- Ranjith Ramasamy
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Joshua Sterling
- Department of Biochemistry, Weill Cornell Medical College, New York, New York
| | - Erik S. Fisher
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Philip S. Li
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Manu Jain
- Department of Urology, Weill Cornell Medical College, New York, New York
| | - Brian D. Robinson
- Department of Pathology, Weill Cornell Medical College, New York, New York
| | - Maria Shevchuck
- Department of Pathology, Weill Cornell Medical College, New York, New York
| | - David Huland
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York
| | - Chris Xu
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York
| | - Sushmita Mukherjee
- Department of Biochemistry, Weill Cornell Medical College, New York, New York
| | - Peter N. Schlegel
- Department of Urology, Weill Cornell Medical College, New York, New York
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