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Chen K, Wang Z, Han Y, Cui Y. In vivo detection of healthy skin: Comparison of multiphoton microscopy and reflectance confocal microscopy. Skin Res Technol 2023; 29:e13340. [PMID: 37231920 PMCID: PMC10156995 DOI: 10.1111/srt.13340] [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: 04/09/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Noninvasive skin examination evolved rapidly in recent years, with multiphoton microscopy (MPM) and reflectance confocal microscopy (RCM) being used to image in-vivo skin at high resolution. The aim of this study is to compare the imaging clarity between the two techniques and measure the thickness of the epidermis in different body sites. We also measured the degree of skin aging with noninvasive tools. METHODS Fifty-six volunteers were evaluated and measured at three different body sites, including the cheek, volar forearm, and back. We used RCM and MPM to evaluate the clarity of each skin layer, including stratum corneum, stratum granulosum, stratum spinosum, dermo-epidermal junction, and dermis. We measured epidermal thickness (ET) at the three body sites in individuals of different ages and genders. We assessed skin aging by the second harmonic to autofluorescence aging index of dermis (SAAID), and multiple linear regression was used to analyze the factors affecting SAAID. RESULTS MPM had advantages in observation of stratum granulosum, collagen fiber, and elastic fiber (p < 0.001), but RCM provided better observation in dermo-epidermal junction layer (p < 0.001). The epidermis was thicker in the cheek area than the volar forearm and back in both RCM and MPM detection, and the average ET measured by MPM was lower than RCM. ET varied among the three body sites with significant differences (p < 0.05). ET was significantly lower at almost all sites in individuals above 40y (p < 0.05). SAAID decreased with age, and more rapidly in women. Cheeks have lower SAAID scores than other body sites. CONCLUSION MPM and RCM provide noninvasive methods for imaging skin and each method has its own advantages. Epidermal thickness and SAAID correlated with age, gender, and different body sites. MPM could also assess the degree of skin aging, which could guide the clinical treatment of patients with diffferent ages and genders in the above body sites.
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Affiliation(s)
- Ke‐Jun Chen
- Chinese Academy of Medical SciencesPeking Union Medical CollegeBeijingChina
- Department of DermatologyChina‐Japan Friendship HospitalBeijingChina
| | - Zi‐Yi Wang
- Chinese Academy of Medical SciencesPeking Union Medical CollegeBeijingChina
- Department of DermatologyChina‐Japan Friendship HospitalBeijingChina
| | - Yang Han
- Chinese Academy of Medical SciencesPeking Union Medical CollegeBeijingChina
- Department of DermatologyChina‐Japan Friendship HospitalBeijingChina
| | - Yong Cui
- Department of DermatologyChina‐Japan Friendship HospitalBeijingChina
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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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da Silva LQ, Cancela RBB, de Lima Montalvão SA, Huber SC, Vieira-Damiani G, Triglia RM, Annichino-Bizzacchi JM. The effect of lyophilized platelet rich-plasma on skin aging: a non-randomized, controlled, pilot trial. Arch Dermatol Res 2021; 313:863-871. [PMID: 33550448 DOI: 10.1007/s00403-021-02186-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/18/2020] [Accepted: 01/09/2021] [Indexed: 12/14/2022]
Abstract
Platelet-rich plasma (PRP) showed positive results in the improvement of skin aging. Lyophilized PRP can be interesting in clinical practice due to the facility to obtain many samples in a single blood collection and can be used in multiple injections. To evaluate the effect of lyophilized PRP in the treatment of skin aging, through a Phase II pilot study. Nineteen women (54 years ± 7 years) with Glogau photoaging II and III types were select for this non-randomized, split-face controlled study. They received monthly intradermal injections of lyophilized PRP and saline solution (as control) into the facial skin, during a period of 2 months. The evaluation was performed by imaging method, histological techniques, and multiphoton microscopy. Although lyophilized PRP presented 10 times the platelet baseline value (P < .0001) and growth factors in adequate levels, only saline solution showed an increase of dermis thickness (p = .0009). Collagen pre and post-application remained the same for both types of treatments. The use of lyophilized PRP by mesotherapy showed no improvement on skin aging. TRIAL REGISTRATION APPROVAL: RBR-3n9wxw, UTN U1111-1226-6093-retrospectively registered.
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Affiliation(s)
- Letícia Queiroz da Silva
- Hemostasis Laboratory - Hemocentro, University of Campinas, 480, Carlos Chagas Street, Campinas, SP, Brazil.
| | | | | | - Stephany Cares Huber
- Hemostasis Laboratory - Hemocentro, University of Campinas, 480, Carlos Chagas Street, Campinas, SP, Brazil
| | - Gislaine Vieira-Damiani
- Department of Medicine, Medical Sciences School, University of Campinas, 126, Tessália Vieira de Camargo Street, Campinas, SP, Brazil
| | - Renata Marchi Triglia
- Department of Pathological Anatomy, Hospital das Clínicas, University of Campinas, 251, Vital Brazil Street, Campinas, SP, Brazil
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Yamazaki K, Li E, Miyazawa A, Kobayashi M, Sayo T, Makita S, Takahashi Y, Yasuno Y, Sakai S. Depth-resolved investigation of multiple optical properties and wrinkle morphology in eye-corner areas with multi-contrast Jones matrix optical coherence tomography. Skin Res Technol 2020; 27:435-443. [PMID: 33111404 DOI: 10.1111/srt.12960] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 09/07/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Multi-contrast Jones matrix optical coherence tomography (JM-OCT) can provide quantitative depth-resolved local optical properties by improving the measurement algorithm. MATERIALS AND METHODS We examined the relationship between depth-resolved local optical properties of eye-corner skin measured by JM-OCT and corresponding wrinkle morphology of aged women (n = 21; age range, 71.7 ± 1.7 years). Wrinkle morphology was analyzed by measuring the surface topography of three-dimensional replicas. The same regions were measured three-dimensionally by JM-OCT, and the local optical properties at each depth were computed. RESULTS Birefringence (BR) and mean wrinkle depth correlated significantly at a depth of 88.2-138.6 µm from the skin surface, and attenuation coefficient (AC) and mean wrinkle depth correlated significantly at a depth of 12.6-18.9 µm and 189-459.9 μm from the skin surface, although a degree of polarization uniformity (DOPU) did not. Stepwise multiple regression analysis demonstrated that a significant regression equation (R2 = 0.649, P < .001) for predicting mean wrinkle depth was determined by BR at 107.1 µm depth (BR 107.1 µm ), DOPU at 170.1 µm (DOPU 170.1µm ), and AC at 252 µm (AC 252 µm ) as independent variables and that these standardized beta regression coefficients were -0.860, -0.593, and -0.440, respectively, suggesting that BR, DOPU, and AC sufficiently explained mean wrinkle depth. CONCLUSION These results suggest that BR 107.1 µm , DOPU 170.1 µm, and AC 252 µm may indicate collagen-related structure in the papillary, upper-reticular dermis, and microstructure or tissue density in reticular dermis, respectively, and may be involved in wrinkle formation.
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Affiliation(s)
- Kohei Yamazaki
- Biological Science Research, Kao Corporation, Odawara, Japan
| | - En Li
- Computational Optics Group, University of Tsukuba, Tsukuba, Japan
| | - Arata Miyazawa
- Computational Optics Group, University of Tsukuba, Tsukuba, Japan
| | | | - Tetsuya Sayo
- Biological Science Research, Kao Corporation, Odawara, Japan
| | - Shuichi Makita
- Computational Optics Group, University of Tsukuba, Tsukuba, Japan
| | | | - Yoshiaki Yasuno
- Computational Optics Group, University of Tsukuba, Tsukuba, Japan
| | - Shingo Sakai
- Skin Care Product Research, Kao Corporation, Odawara, Japan
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Gorzelanny C, Mess C, Schneider SW, Huck V, Brandner JM. Skin Barriers in Dermal Drug Delivery: Which Barriers Have to Be Overcome and How Can We Measure Them? Pharmaceutics 2020; 12:E684. [PMID: 32698388 PMCID: PMC7407329 DOI: 10.3390/pharmaceutics12070684] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/11/2020] [Accepted: 07/14/2020] [Indexed: 12/13/2022] Open
Abstract
Although, drugs are required in the various skin compartments such as viable epidermis, dermis, or hair follicles, to efficiently treat skin diseases, drug delivery into and across the skin is still challenging. An improved understanding of skin barrier physiology is mandatory to optimize drug penetration and permeation. The various barriers of the skin have to be known in detail, which means methods are needed to measure their functionality and outside-in or inside-out passage of molecules through the various barriers. In this review, we summarize our current knowledge about mechanical barriers, i.e., stratum corneum and tight junctions, in interfollicular epidermis, hair follicles and glands. Furthermore, we discuss the barrier properties of the basement membrane and dermal blood vessels. Barrier alterations found in skin of patients with atopic dermatitis are described. Finally, we critically compare the up-to-date applicability of several physical, biochemical and microscopic methods such as transepidermal water loss, impedance spectroscopy, Raman spectroscopy, immunohistochemical stainings, optical coherence microscopy and multiphoton microscopy to distinctly address the different barriers and to measure permeation through these barriers in vitro and in vivo.
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Affiliation(s)
| | | | | | | | - Johanna M. Brandner
- Department of Dermatology and Venerology, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (C.G.); (C.M.); (S.W.S.); (V.H.)
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Wang H, Guo B, Hui Q, Lin F, Tao K. CO 2 lattice laser reverses skin aging caused by UVB. Aging (Albany NY) 2020; 12:7056-7065. [PMID: 32312940 PMCID: PMC7202480 DOI: 10.18632/aging.103063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 03/24/2020] [Indexed: 01/01/2023]
Abstract
The carbon dioxide (CO2) lattice laser has been successfully used to treat facial skin photoaging induced by UV light. In this study, we analyzed the effect of CO2 lattice laser irradiation on skin photoaging, and investigated the underlying mechanisms. Our results demonstrate that the laser promoted collagen synthesis and proliferation of primary human skin fibroblasts, inhibited cell senescence, and induced expression of superoxide dismutase (SOD) and the signaling protein SMAD3. In addition, this laser reversed cell cycle arrest and fibroblast apoptosis induced by UVB irradiation, and restored fibroblast proliferation inhibited by SMAD3 silencing. Using a rat model of photoaging, our results show that the laser increased collagen expression and dermal thickness, demonstrating that the CO2 lattice laser has a profound therapeutic effect on photoaged skin. Together, our in vitro and in vivo data show that the CO2 lattice laser can reverse the skin aging caused by UVB, and indicate that this effect is mediated through SMAD3.
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Affiliation(s)
- Hongyi Wang
- Reconstructive and Plastic Surgery, General Hospital of Northern Theater Command, Shenyang, P.R.China
| | - Bingyu Guo
- Reconstructive and Plastic Surgery, General Hospital of Northern Theater Command, Shenyang, P.R.China
| | - Qiang Hui
- Reconstructive and Plastic Surgery, General Hospital of Northern Theater Command, Shenyang, P.R.China
| | - Feng Lin
- Reconstructive and Plastic Surgery, General Hospital of Northern Theater Command, Shenyang, P.R.China
| | - Kai Tao
- Reconstructive and Plastic Surgery, General Hospital of Northern Theater Command, Shenyang, P.R.China
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7
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Kistenev YV, Nikolaev VV, Kurochkina OS, Borisov AV, Vrazhnov DA, Sandykova EA. Application of multiphoton imaging and machine learning to lymphedema tissue analysis. BIOMEDICAL OPTICS EXPRESS 2019; 10:3353-3368. [PMID: 31467782 PMCID: PMC6706037 DOI: 10.1364/boe.10.003353] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/08/2019] [Accepted: 05/11/2019] [Indexed: 05/04/2023]
Abstract
The results of in-vivo two-photon imaging of lymphedema tissue are presented. The study involved 36 image samples from II stage lymphedema patients and 42 image samples from healthy volunteers. The papillary layer of the skin with a penetration depth of about 100 μm was examined. Both the collagen network disorganization and increase of the collagen/elastin ratio in lymphedema tissue, characterizing the severity of fibrosis, was observed. Various methods of image characterization, including edge detectors, a histogram of oriented gradients method, and a predictive model for diagnosis using machine learning, were used. The classification by "ensemble learning" provided 96% accuracy in validating the data from the testing set.
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Affiliation(s)
- Yury V. Kistenev
- Tomsk State University, 36 Lenin Ave., Tomsk, Russia, 6340502
- Siberian State Medical University, 2 Moscovsky Trakt, Tomsk, Russia, 634050
| | - Viktor V. Nikolaev
- Tomsk State University, 36 Lenin Ave., Tomsk, Russia, 6340502
- Institute of Strength Physics and Materials Science of Siberian Branch of the RAS, 2/4, pr. Akademicheskii, Tomsk, Russia, 634055
| | - Oksana S. Kurochkina
- The Institute of Microsurgery, Russia, 96 I. Chernykh St., Tomsk, Russia, 634063
| | - Alexey V. Borisov
- Tomsk State University, 36 Lenin Ave., Tomsk, Russia, 6340502
- Siberian State Medical University, 2 Moscovsky Trakt, Tomsk, Russia, 634050
| | - Denis A. Vrazhnov
- Tomsk State University, 36 Lenin Ave., Tomsk, Russia, 6340502
- Institute of Strength Physics and Materials Science of Siberian Branch of the RAS, 2/4, pr. Akademicheskii, Tomsk, Russia, 634055
| | - Ekaterina A. Sandykova
- Tomsk State University, 36 Lenin Ave., Tomsk, Russia, 6340502
- Institute of Strength Physics and Materials Science of Siberian Branch of the RAS, 2/4, pr. Akademicheskii, Tomsk, Russia, 634055
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8
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Dudenkova VV, Shirmanova MV, Lukina MM, Feldshtein FI, Virkin A, Zagainova EV. Examination of Collagen Structure and State by the Second Harmonic Generation Microscopy. BIOCHEMISTRY (MOSCOW) 2019; 84:S89-S107. [DOI: 10.1134/s0006297919140062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Obeidy P, Tong PL, Weninger W. Research Techniques Made Simple: Two-Photon Intravital Imaging of the Skin. J Invest Dermatol 2018; 138:720-725. [DOI: 10.1016/j.jid.2018.01.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Czekalla C, Schönborn KH, Döge N, Jung S, Darvin ME, Lademann J, Meinke MC. Impact of Body Site, Age, and Gender on the Collagen/Elastin Index by Noninvasive in vivo Vertical Two-Photon Microscopy. Skin Pharmacol Physiol 2017; 30:260-267. [PMID: 28803240 DOI: 10.1159/000477854] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 05/24/2017] [Indexed: 01/16/2023]
Abstract
BACKGROUND/AIMS Extrinsic and intrinsic skin aging is subject to constant remodeling and degradation processes, primarily in components of the extracellular matrix. While collagen fibers thin out during the aging process, the amorphous elastin fibers accumulate. These are essential formative components of the dermis. So far, these processes have been detected in vertical histological sections of invasive biopsies and recently in noninvasive horizontal scans. METHODS In this pilot study, a modified noninvasive 2-photon microscope was applied to measure the collagen/elastin index of skin in vivo. The obtained images permit an immediate vertical survey and allow a conclusion on the dermal composition at once. The collagen/elastin index was quantified by the second harmonic to autofluorescence aging index of dermis (SAAID) depending on volunteers' age (18-66 years), gender, and body area. RESULTS The highest SAAID was measured at the volar forearm as compared to the abdominal SAAID, which was significantly lower (p < 0.05). The gluteal region showed the significantly lowest SAAID (p < 0.05). The SAAID in female skin was higher compared to male skin and decreased with increasing age. CONCLUSION These effects are to be considered in subsequent studies to be able to specifically detect and evaluate influences.
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Affiliation(s)
- Carolin Czekalla
- Department of Dermatology, Venereology, and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Wei H, Gu SX, Liang YD, Liang ZJ, Chen H, Zhu MG, Xu FT, He N, Wei XJ, Li HM. Nanofat-derived stem cells with platelet-rich fibrin improve facial contour remodeling and skin rejuvenation after autologous structural fat transplantation. Oncotarget 2017; 8:68542-68556. [PMID: 28978136 PMCID: PMC5620276 DOI: 10.18632/oncotarget.19721] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 06/19/2017] [Indexed: 12/28/2022] Open
Abstract
Traditional autologous fat transplantation is a common surgical procedure for treating facial soft tissue depression and skin aging. However, the transplanted fat is easily absorbed, reducing the long-term efficacy of the procedure. Here, we examined the efficacy of nanofat-assisted autologous fat structural transplantation. Nanofat-derived stem cells (NFSCs) were isolated, mechanically emulsified, cultured, and characterized. Platelet-rich fibrin (PRF) enhanced proliferation and adipogenic differentiation of NFSCs in vitro. We then compared 62 test group patients with soft tissue depression or signs of aging who underwent combined nanofat, PRF, and autologous fat structural transplantation to control patients (77 cases) who underwent traditional autologous fat transplantation. Facial soft tissue depression symptoms and skin texture were improved to a greater extent after nanofat transplants than after traditional transplants, and the nanofat group had an overall satisfaction rate above 90%. These data suggest that NFSCs function similarly to mesenchymal stem cells and share many of the biological characteristics of traditional fat stem cell cultures. Transplants that combine newly-isolated nanofat, which has a rich stromal vascular fraction (SVF), with PRF and autologous structural fat granules may therefore be a safe, highly-effective, and long-lasting method for remodeling facial contours and rejuvenating the skin.
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Affiliation(s)
- Hua Wei
- Department of Endocrinology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
| | - Shi-Xing Gu
- Department of Burns & Plastic Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
| | - Yi-Dan Liang
- Central Laboratory of Medical Science, The Fifth Affiliated Hospital of Guangxi Medical University & The First People's Hospital of Nanning, Nanning 530022, China
| | - Zhi-Jie Liang
- Department of Gland Surgery, The Fifth Affiliated Hospital of Guangxi Medical University & The First People's Hospital of Nanning, Nanning 530022, China
| | - Hai Chen
- Department of Gland Surgery, The Fifth Affiliated Hospital of Guangxi Medical University & The First People's Hospital of Nanning, Nanning 530022, China
| | - Mao-Guang Zhu
- Department of Gland Surgery, The Fifth Affiliated Hospital of Guangxi Medical University & The First People's Hospital of Nanning, Nanning 530022, China
| | - Fang-Tian Xu
- Department of Orthopedics, The First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Ning He
- Department of Plastic and Aesthetic Surgery, The Fifth Affiliated Hospital of Guangxi Medical University & The First People's Hospital of Nanning, Nanning 530022, China
| | - Xiao-Juan Wei
- Department of Urinary Surgery, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise 533000, China
| | - Hong-Mian Li
- Department of Plastic and Aesthetic Surgery, The Fifth Affiliated Hospital of Guangxi Medical University & The First People's Hospital of Nanning, Nanning 530022, China
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Evaluation of Elastin/Collagen Content in Human Dermis in-Vivo by Multiphoton Tomography—Variation with Depth and Correlation with Aging. COSMETICS 2014. [DOI: 10.3390/cosmetics1030211] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Tong PL, Qin J, Cooper CL, Lowe PM, Murrell DF, Kossard S, Ng LG, Roediger B, Weninger W, Haass NK. A quantitative approach to histopathological dissection of elastin-related disorders using multiphoton microscopy. Br J Dermatol 2014; 169:869-79. [PMID: 23662922 DOI: 10.1111/bjd.12430] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2013] [Indexed: 01/03/2023]
Abstract
BACKGROUND Multiphoton microscopy (MPM) is a novel imaging technology that has recently become applicable for diagnostic purposes. The use of (near) infrared light in MPM allows for deep tissue imaging. In addition, this modality exploits the autofluorescent nature of extracellular matrix fibres within the skin. OBJECTIVES To quantitate the structure and abundance of elastic fibres in human dermis in three dimensions utilizing autofluorescent signals generated by MPM for the objective examination of elastin-related skin disorders. METHODS Cross-sections of skin samples from elastin-related disorders were analysed by MPM and correlated to histopathology. In situ visualization of elastic fibres by MPM was conducted by en face imaging of ex vivo skin samples through the intact epidermis. Image analysis software was used to quantify elastic fibres in three dimensions. RESULTS Based on the MPM-detected elastin-specific autofluorescence, we developed the Dermal Elastin Morphology Index (DEMI), calculated as the ratio of elastic fibre surface area and volume. This enabled objective three-dimensional quantification of elastic fibres. Quantitative scoring of sun-damaged skin using DEMI correlated with qualitative histopathological grading of the severity of solar elastosis. Furthermore, this approach was applied to changes in elastic fibre architecture in other disorders, such as pseudoxanthoma elasticum (PXE), PXE-like syndrome, elastofibroma, focal dermal elastosis, anetoderma, mid-dermal elastolysis and striae distensae. We imaged elastic fibres in intact ex vivo skin imaged en face through the epidermis, indicating that this approach could be used in vivo. CONCLUSIONS MPM has the potential for noninvasive in vivo visualization of elastic fibres in the dermis with near histological resolution. DEMI allows objective assessment of elastic fibres to support diagnosis and monitoring of disease progress or therapy of elastin-related skin disorders.
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Affiliation(s)
- P L Tong
- Centenary Institute, Newtown, NSW, Australia; Discipline of Dermatology, University of Sydney, Camperdown, NSW, Australia; Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
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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: 51] [Impact Index Per Article: 5.1] [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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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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Lv T, Huang ZF, Wang HW, Lin JQ, Chen GN, Chen XW, Chen R, Huang Z, Wang XL. Evaluation of collagen alteration after topical photodynamic therapy (PDT) using second harmonic generation (SHG) microscopy--in vivo study in a mouse model. Photodiagnosis Photodyn Ther 2012; 9:164-9. [PMID: 22594987 DOI: 10.1016/j.pdpdt.2011.12.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Revised: 12/03/2011] [Accepted: 12/10/2011] [Indexed: 12/19/2022]
Abstract
Topical photodynamic therapy (PDT) mediated by 5-aminolevulinic acid (ALA) has been used for the treatment of age-related skin lesions for therapeutic or cosmetic purposes. The modulation of collagen component and structure might play a significant role in influencing treatment outcomes of PDT. In this study, the effect of multi-session low dose ALA PDT on skin rejuvenation was examined in a hairless mouse model. Changes in collagen and skin texture were investigated by histological examination and in vivo second harmonic generation (SHG) microscopy. Results indicated that multi-session PDT could improve the collagen density and arrangement of skin tissue. SHG microscopy combined with quantitative collagen analysis could provide a useful tool for the evaluation of collagen alteration induced by ALA PDT.
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Affiliation(s)
- Ting Lv
- Shanghai Skin Diseases Hospital, Shanghai 200050, PR China
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Labouta HI, Kraus T, El-Khordagui LK, Schneider M. Combined multiphoton imaging-pixel analysis for semiquantitation of skin penetration of gold nanoparticles. Int J Pharm 2011; 413:279-82. [DOI: 10.1016/j.ijpharm.2011.03.067] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 03/26/2011] [Accepted: 03/29/2011] [Indexed: 10/18/2022]
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