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Guo Q, Cen J, He M, Huang D, Tang Z, Xiong H. Fractional erbium:yttrium aluminum garnet laser in the treatment of morphea mouse model. J Cosmet Dermatol 2023; 22:3282-3290. [PMID: 37326004 DOI: 10.1111/jocd.15855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/11/2023] [Accepted: 05/24/2023] [Indexed: 06/17/2023]
Abstract
OBJECTIVE To assess the efficiency and the mechanism of fractional erbium:yttrium aluminum garnet (Er:YAG) laser for the treatment of morphea in mouse model. BACKGROUND Morphea is a rare autoimmune disease characterized by excessive collagen deposition in skin. Fractional Er:YAG laser treatment is a promising treatment to improve morphea, despite limited studies about the therapeutic effect and underlying mechanism. METHODS The mouse model of morphea was established by subcutaneously injecting with bleomycin (BLM). A total of 24 mice received fractional Er:YAG laser treatment once a week for 4 weeks. Objective measurement employed was ultrasonic imaging to measure dermal thickness. Subjective measures included scoring according to the adjusted Localized morphea Cutaneous Assessment Tool (LoSCAT); hematoxylin and eosin (H&E) staining to evaluate the histological grade of fibrosis; and quantitative morphometric studies to determine the expression of transforming growth factor-β1 (TGF-β1) and matrix metalloproteinase-1 (MMP1) by immunohistochemistry. RESULTS In this self-controlled study, fractional Er:YAG laser treatment significantly ameliorate the severity of morphea, including lower clinical score (p < 0.01), decreased dermal thickness (p < 0.001), declined histological grade of fibrosis (p < 0.001), increased MMP1 (p < 0.001), and reduced TGF-β1 (p < 0.01) expression. CONCLUSIONS We found that fractional Er:YAG laser treatment of morphea has good clinical, ultrasonic, and histopathologic efficacy, which may be a promising treatment in the future.
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Affiliation(s)
- Qing Guo
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Junjie Cen
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Mingjie He
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Danqi Huang
- Department of Chemical Pathology, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Zengqi Tang
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hui Xiong
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Sendín-Martín M, Posner J, Harris U, Moronta M, Conejo-Mir Sánchez J, Mukherjee S, Rajadhyaksha M, Kose K, Jain M. Quantitative collagen analysis using second harmonic generation images for the detection of basal cell carcinoma with ex vivo multiphoton microscopy. Exp Dermatol 2023; 32:392-402. [PMID: 36409162 PMCID: PMC10478030 DOI: 10.1111/exd.14713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/22/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022]
Abstract
Basal cell carcinoma (BCC) is the most common skin cancer, and its incidence is rising. Millions of benign biopsies are performed annually for BCC diagnosis, increasing morbidity, and healthcare costs. Non-invasive in vivo technologies such as multiphoton microscopy (MPM) can aid in diagnosing BCC, reducing the need for biopsies. Furthermore, the second harmonic generation (SHG) signal generated from MPM can classify and prognosticate cancers based on extracellular matrix changes, especially collagen type I. We explored the potential of MPM to differentiate collagen changes associated with different BCC subtypes compared to normal skin structures and benign lesions. Quantitative analysis such as frequency band energy analysis in Fourier domain, CurveAlign and CT-FIRE fibre analysis was performed on SHG images from 52 BCC and 12 benign lesions samples. Our results showed that collagen distribution is more aligned surrounding BCCs nests compared to the skin's normal structures (p < 0.001) and benign lesions (p < 0.001). Also, collagen was orientated more parallelly surrounding indolent BCC subtypes (superficial and nodular) versus those with more aggressive behaviour (infiltrative BCC) (p = 0.021). In conclusion, SHG signal from type I collagen can aid not only in the diagnosis of BCC but could be useful for prognosticating these tumors. Our initial results are limited to a small number of samples, requiring large-scale studies to validate them. These findings represent the groundwork for future in vivo MPM for diagnosis and prognosis of BCC.
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Affiliation(s)
- Mercedes Sendín-Martín
- Hospital Universitario Virgen del Rocío, Dermatology Department, Sevilla (Spain)
- Universidad de Sevilla, Department of Medicine, Sevilla (Spain)
| | - Jasmine Posner
- Memorial Sloan Kettering Cancer Center, Dermatology Service, Department of Medicine, New York (USA)
| | - Ucalene Harris
- Memorial Sloan Kettering Cancer Center, Dermatology Service, Department of Medicine, New York (USA)
| | - Matthew Moronta
- Memorial Sloan Kettering Cancer Center, Dermatology Service, Department of Medicine, New York (USA)
| | - Julián Conejo-Mir Sánchez
- Hospital Universitario Virgen del Rocío, Dermatology Department, Sevilla (Spain)
- Universidad de Sevilla, Department of Medicine, Sevilla (Spain)
| | - Sushmita Mukherjee
- Weill Cornell Medicine, Dermatology Service, Department of Medicine, New York (USA)
| | - Milind Rajadhyaksha
- Memorial Sloan Kettering Cancer Center, Dermatology Service, Department of Medicine, New York (USA)
| | - Kivanc Kose
- Memorial Sloan Kettering Cancer Center, Dermatology Service, Department of Medicine, New York (USA)
| | - Manu Jain
- Memorial Sloan Kettering Cancer Center, Dermatology Service, Department of Medicine, New York (USA)
- Weill Cornell Medicine, Dermatology Service, Department of Medicine, New York (USA)
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Characterisation of Collagen Re-Modelling in Localised Prostate Cancer Using Second-Generation Harmonic Imaging and Transrectal Ultrasound Shear Wave Elastography. Cancers (Basel) 2021; 13:cancers13215553. [PMID: 34771715 PMCID: PMC8582793 DOI: 10.3390/cancers13215553] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/20/2021] [Accepted: 11/03/2021] [Indexed: 12/19/2022] Open
Abstract
Prostate cancer has a poor prognosis and high mortality rate due to metastases. Extracellular matrix (ECM) re-modelling and stroma composition have been linked to cancer progression, including key components of cell migration, tumour metastasis, and tissue modulus. Moreover, collagens are one of the most significant components of the extracellular matrix and have been ascribed to many aspects of neoplastic transformation. This study characterises collagen re-modelling around localised prostate cancer using the second harmonic generation of collagen (SHG), genotyping and ultrasound shear wave elastography (USWE) measured modulus in men with clinically localised prostate cancer. Tempo-sequence assay for gene expression of COL1A1 and COL3A1 was used to confirm the expression of collagen. Second-harmonic generation imaging and genotyping of ECM around prostate cancer showed changes in content, orientation, and type of collagen according to Gleason grades (cancer aggressivity), and this correlated with the tissue modulus measured by USWE in kilopascals. Furthermore, there were clear differences between collagen orientation and type around normal and cancer tissues.
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Laser Therapy for the Treatment of Morphea: A Systematic Review of Literature. J Clin Med 2021; 10:jcm10153409. [PMID: 34362192 PMCID: PMC8347526 DOI: 10.3390/jcm10153409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 02/07/2023] Open
Abstract
Morphea, also known as localized scleroderma (LoS), comprises a set of autoimmune sclerotic skin diseases. It is characterized by inflammation and limited thickening and induration of the skin; however, in some cases, deeper tissues might also be involved. Although morphea is not considered a life-threatening disease, the apparent cosmetic disfigurement, functional or psychosocial impairment affects multiple fields of patients’ quality of life. Therapy for LoS is often unsatisfactory with numerous treatments that have only limited effectiveness or considerable side effects. Due to the advances in the application of lasers and their possible beneficial effects, the aim of this study is to review the reported usage of laser in morphea. We present a systematic review of available literature, performed with MEDLINE, Cinahl, Central, Scopus, Web of Science, and Google Scholar databases. We identified a total of twenty relevant studies (MEDLINE n = 10, Cinahl n = 1, Central n = 0, Scopus n = 2, Web of Science n = 5, Google Scholar n = 2) using laser therapy for LoS. Eight studies were focused on the use of PDL, six on fractional lasers (CO2 and Er:YAG), four on excimer, and two on either alexandrite or Nd:YAG.
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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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Chen CH, Nair AV, Chuang SC, Lin YS, Cheng MH, Lin CY, Chang CY, Chen SJ, Lien CH. Dual-LC PSHG microscopy for imaging collagen type I and type II gels with pixel-resolution analysis. BIOMEDICAL OPTICS EXPRESS 2021; 12:3050-3065. [PMID: 34168914 PMCID: PMC8194623 DOI: 10.1364/boe.416193] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/18/2021] [Accepted: 04/07/2021] [Indexed: 05/27/2023]
Abstract
Collagen of type I (Col I) and type II (Col II) are critical for cartilage and connective tissues in the human body, and several diseases may alter their properties. Assessing the identification and quantification of fibrillar collagen without biomarkers is a challenge. Advancements in non-invasive polarization-resolved second-harmonic generation (PSHG) microscopy have provided a method for the non-destructive investigation of collagen molecular level properties. Here we explored an alternative polarization modulated approach, dual-LC PSHG, that is based on two liquid crystal devices (Liquid crystal polarization rotators, LPRs) operating simultaneously with a laser scanning SHG microscope. We demonstrated that this more accessible technology allows the quick and accurate generation of any desired linear and circular polarization state without any mechanical parts. This study demonstrates that this method can aid in improving the ability to quantify the characteristics of both types of collagen, including pitch angle, anisotropy, and circular dichroism analysis. Using this approach, we estimated the effective pitch angle for Col I and Col II to be 49.7° and 51.6°, respectively. The effective peptide pitch angle for Col II gel was first estimated and is similar to the value obtained for Col I gel in the previous studies. Additionally, the difference of the anisotropy parameter of both collagen type gels was assessed to be 0.293, which reflects the different type molecular fibril assembly. Further, our work suggests a potential method for monitoring and differentiating different collagen types in biological tissues, especially cartilage or connective tissue.
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Affiliation(s)
- Chung-Hwan Chen
- Orthopaedic Research Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- Departments of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Adult Reconstruction Surgery, Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | | | - Shu-Chun Chuang
- Orthopaedic Research Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Shan Lin
- Orthopaedic Research Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Mei-Hsin Cheng
- Orthopaedic Research Centre, Kaohsiung Medical University, Kaohsiung, Taiwan
- Regeneration Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Yu Lin
- College of Photonics, National Chiao Tung University, Tainan, Taiwan
| | - Chia-Ying Chang
- College of Photonics, National Chiao Tung University, Tainan, Taiwan
| | - Shean-Jen Chen
- College of Photonics, National Chiao Tung University, Tainan, Taiwan
| | - Chi-Hsiang Lien
- Department of Mechanical Engineering, National United University, Miaoli, Taiwan
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Yang Q, Xu Z, Liao C, Cai J, Huang Y, Chen H, Tao X, Huang Z, Chen J, Dong J, Zhu X. Epithelium segmentation and automated Gleason grading of prostate cancer via deep learning in label-free multiphoton microscopic images. JOURNAL OF BIOPHOTONICS 2020; 13:e201900203. [PMID: 31710780 DOI: 10.1002/jbio.201900203] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 11/10/2019] [Accepted: 11/10/2019] [Indexed: 06/10/2023]
Abstract
In the current clinical care practice, Gleason grading system is one of the most powerful prognostic predictors for prostate cancer (PCa). The grading system is based on the architectural pattern of cancerous epithelium in histological images. However, the standard procedure of histological examination often involves complicated tissue fixation and staining, which are time-consuming and may delay the diagnosis and surgery. In this study, label-free multiphoton microscopy (MPM) was used to acquire subcellular-resolution images of unstained prostate tissues. Then, a deep learning architecture (U-net) was introduced for epithelium segmentation of prostate tissues in MPM images. The obtained segmentation results were then merged with the original MPM images to train a classification network (AlexNet) for automated Gleason grading. The developed method achieved an overall pixel accuracy of 92.3% with a mean F1 score of 0.839 for epithelium segmentation. By merging the segmentation results with the MPM images, the accuracy of Gleason grading was improved from 72.42% to 81.13% in hold-out test set. Our results suggest that MPM in combination with deep learning holds the potential to be used as a fast and powerful clinical tool for PCa diagnosis.
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Affiliation(s)
- Qinqin Yang
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
- Department of Electronic Science, Xiamen University, Xiamen, China
| | - Zhexin Xu
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Chenxi Liao
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Jianyong Cai
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Ying Huang
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Hong Chen
- Department of Pathology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xuan Tao
- Department of Pathology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Zheng Huang
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Jianxin Chen
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Jiyang Dong
- Department of Electronic Science, Xiamen University, Xiamen, China
| | - Xiaoqin Zhu
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
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Lee JH, Shih YT, Wei ML, Sun CK, Chiang BL. Classification of established atopic dermatitis in children with the in vivo imaging methods. JOURNAL OF BIOPHOTONICS 2019; 12:e201800148. [PMID: 30302943 DOI: 10.1002/jbio.201800148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/24/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
Atopic dermatitis (AD) is a cutaneous disease resulting from a defective barrier and dysregulated immune response. The severity scoring of atopic dermatitis (SCORAD) is used to classify AD. Noninvasive imaging approaches supplementary to SCORAD were investigated. Cr:forsterite laser-based microscopy was employed to analyze endogenous third-harmonic generation (THG) and second-harmonic generation (SHG) signals from skin. Imaging parameters were compared between different AD severities. Three-dimensional reconstruction of imaged skin layers was performed. Finally, statistic models from quantitative imaging parameters were developed for predicting disease severity. Our data demonstrate that THG signal intensity of lesional skin in AD were significantly increased and was positively correlated with AD severity. Characteristic gray level co-occurrence matrix (GLCM) values were observed in more severe AD. In the 3D reconstruction video, individual dermal papilla and obvious fibrosis in the upper papillary dermis were easily identified. Our estimation models could predict the disease severity of AD patients with an accuracy of nearly 85%. The THG signal intensity and characteristic GLCM patterns are associated with AD severity and can serve as quantitative predictive parameters. Our imaging approach can be used to identify the histopathological changes of AD objectively, and to complement the SCORAD index, thus improving the accuracy of classifying AD severity.
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Affiliation(s)
- Jyh-Hong Lee
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan, Republic of China
| | - Yuan-Ta Shih
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Ming-Liang Wei
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
| | - Chi-Kuang Sun
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
- Research Center for Applied Sciences and Institute of Physics, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Bor-Luen Chiang
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan, Republic of China
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan, Republic of China
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Amori P, Di Nardo V, Vitiello G, Franca K, Hercogova J, Wollina U, Daaboul F, Tchernev G, Lotti T. Primavera: A new therapeutical approach to vulvo-vaginal atrophy. Dermatol Ther 2018; 31:e12678. [DOI: 10.1111/dth.12678] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/12/2018] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Katlein Franca
- Dermatology & Cutaneous Surgery; University of Miami School of Medicine; Miami Florida
| | - Jana Hercogova
- Department of Dermatovenerology; 2nd Faculty of Medicine, Charles University; Prague Czech Republic
| | - Uwe Wollina
- Dermatology, Venereology and Allergology; Academic Teaching Hospital Dresden-Friedrichstadt; Dreseden Germany
| | - Farah Daaboul
- Institute of Dermatological and Regenerative Sciences; Florence Italy
| | - Georgi Tchernev
- Dermatology and Venereology; Medical Institute of the Ministry of Interior; Sofia Bulgaria
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10
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Baria E, Nesi G, Santi R, Maio V, Massi D, Pratesi C, Cicchi R, Pavone FS. Improved label-free diagnostics and pathological assessment of atherosclerotic plaques through nonlinear microscopy. JOURNAL OF BIOPHOTONICS 2018; 11:e201800106. [PMID: 29931805 DOI: 10.1002/jbio.201800106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
Coronary heart disease is the most common type of heart disease caused by atherosclerosis. In fact, an arterial wall lesion centered on the accumulation of cholesterol-rich lipids and the accompanying inflammatory response generates a plaque, whose rupture may result in a thrombus with fatal consequences. Plaque characterization for assessing the severity of atherosclerosis is generally performed through standard histopathological examination based on hematoxylin/eosin staining, which is operator-dependent and requires relatively long procedures. In this framework, nonlinear optical microscopy is a valid, label-free alternative to standard diagnostic methods. We combined second-harmonic generation (SHG), two-photon excited fluorescence (TPEF) and fluorescence lifetime imaging microscopy in a multimodal scheme for obtaining morphological and molecular information on human carotid ex vivo specimens affected by atherosclerosis. In this study, discrimination between different tissues within the atherosclerotic plaque was achieved based on both lifetime, TPEF-to-SHG ratio, and image pattern analysis. The presented methodology aims to be a starting point for future fully automated and fast characterization of atherosclerotic biopsies; moreover, it could be extended to the study of other tissues and pathologies. Combined TPEF/SHG mapping of a carotid specimen affected by atherosclerosis.
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Affiliation(s)
- Enrico Baria
- National Institute of Optics, National Research Council, Florence, Italy
| | - Gabriella Nesi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Raffaella Santi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Vincenza Maio
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Daniela Massi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - Carlo Pratesi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Riccardo Cicchi
- National Institute of Optics, National Research Council, Florence, Italy
- European Laboratory for Non-Linear Spectroscopy, University of Florence, Florence, Italy
| | - Francesco S Pavone
- National Institute of Optics, National Research Council, Florence, Italy
- European Laboratory for Non-Linear Spectroscopy, University of Florence, Florence, Italy
- Department of Physics, University of Florence, Florence, Italy
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Chu J, Shi P, Deng X, Jin Y, Liu H, Chen M, Han X, Liu H. Dynamic multiphoton imaging of acellular dermal matrix scaffolds seeded with mesenchymal stem cells in diabetic wound healing. JOURNAL OF BIOPHOTONICS 2018; 11:e201700336. [PMID: 29575792 DOI: 10.1002/jbio.201700336] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 03/08/2018] [Indexed: 06/08/2023]
Abstract
Significantly effective therapies need to be developed for chronic nonhealing diabetic wounds. In this work, the topical transplantation of mesenchymal stem cell (MSC) seeded on an acellular dermal matrix (ADM) scaffold is proposed as a novel therapeutic strategy for diabetic cutaneous wound healing. GFP-labeled MSCs were cocultured with an ADM scaffold that was decellularized from normal mouse skin. These cultures were subsequently transplanted as a whole into the full-thickness cutaneous wound site in streptozotocin-induced diabetic mice. Wounds treated with MSC-ADM demonstrated an increased percentage of wound closure. The treatment of MSC-ADM also greatly increased angiogenesis and rapidly completed the reepithelialization of newly formed skin on diabetic mice. More importantly, multiphoton microscopy was used for the intravital and dynamic monitoring of collagen type I (Col-I) fibers synthesis via second harmonic generation imaging. The synthesis of Col-I fibers during diabetic wound healing is of great significance for revealing wound repair mechanisms. In addition, the activity of GFP-labeled MSCs during wound healing was simultaneously traced via two-photon excitation fluorescence imaging. Our research offers a novel advanced nonlinear optical imaging method for monitoring the diabetic wound healing process while the ADM and MSCs interact in situ. Schematic of dynamic imaging of ADM scaffolds seeded with mesenchymal stem cells in diabetic wound healing using multiphoton microscopy. PMT, photo-multiplier tube.
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Affiliation(s)
- Jing Chu
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
| | - Panpan Shi
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
| | - Xiaoyuan Deng
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
| | - Ying Jin
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
| | - Hao Liu
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
| | - Maosheng Chen
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
| | - Xue Han
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
| | - Hanping Liu
- Department of College of Biophotonics, South China Normal University, Guangzhou, China
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12
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Ling Y, Li C, Zhou K, Guan G, Appleton PL, Lang S, McGloin D, Huang Z, Nabi G. Microscale characterization of prostate biopsies tissues using optical coherence elastography and second harmonic generation imaging. J Transl Med 2018; 98:380-390. [PMID: 29251735 PMCID: PMC5842892 DOI: 10.1038/labinvest.2017.132] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/01/2017] [Accepted: 10/17/2017] [Indexed: 01/29/2023] Open
Abstract
Photonics, especially optical coherence elastography (OCE) and second harmonic generation (SHG) imaging are novel high-resolution imaging modalities for characterization of biological tissues. Following our preliminary experience, we hypothesized that OCE and SHG imaging would delineate the microstructure of prostate tissue and aid in distinguishing cancer from the normal benign prostatic tissue. Furthermore, these approaches may assist in characterization of the grade of cancer, as well. In this study, we confirmed a high diagnostic accuracy of OCE and SHG imaging in the detection and characterization of prostate cancer for a large set of biopsy tissues obtained from men suspected to have prostate cancer using transrectal ultrasound (TRUS). The two techniques and methods described here are complementary, one depicts the stiffness of tissues and the other illustrates the orientation of collagen structure around the cancerous lesions. The results showed that stiffness of cancer tissue was ~57.63% higher than that of benign tissue (Young's modulus of 698.43±125.29 kPa for cancerous tissue vs 443.07±88.95 kPa for benign tissue with OCE. Using histology as a reference standard and 600 kPa as a cut-off threshold, the data analysis showed sensitivity and specificity of 89.6 and 99.8%, respectively. Corresponding positive and negative predictive values were 99.5 and 94.6%, respectively. There was a significant difference noticed in terms of Young's modulus for different Gleason scores estimated by OCE (P-value<0.05). For SHG, distinct patterns of collagen distribution were seen for different Gleason grade disease with computed quantification employing a ratio of anisotropic to isotropic (A:I ratio) and this correlated with disease aggressiveness.
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Affiliation(s)
- Yuting Ling
- Division of Cancer Research, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK,School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK
| | - Chunhui Li
- Division of Cancer Research, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK,School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK
| | - Kanheng Zhou
- Division of Cancer Research, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK,School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK
| | - Guangying Guan
- Division of Cancer Research, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK,School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK
| | - Paul L. Appleton
- Dundee Imaging Facility, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
| | - Stephen Lang
- Department of Pathology, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
| | - David McGloin
- School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK
| | - Zhihong Huang
- Division of Cancer Research, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK,School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK
| | - Ghulam Nabi
- Division of Cancer Research, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK
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13
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Sherlock B, Warren SC, Alexandrov Y, Yu F, Stone J, Knight J, Neil MAA, Paterson C, French PMW, Dunsby C. In vivo multiphoton microscopy using a handheld scanner with lateral and axial motion compensation. JOURNAL OF BIOPHOTONICS 2018; 11:e201700131. [PMID: 28858435 DOI: 10.1002/jbio.201700131] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/25/2017] [Accepted: 08/28/2017] [Indexed: 06/07/2023]
Abstract
This paper reports a handheld multiphoton fluorescence microscope designed for clinical imaging that incorporates axial motion compensation and lateral image stabilization. Spectral domain optical coherence tomography is employed to track the axial position of the skin surface, and lateral motion compensation is realised by imaging the speckle pattern arising from the optical coherence tomography beam illuminating the sample. Our system is able to correct lateral sample velocities of up to approximately 65 μm s-1 . Combined with the use of negative curvature microstructured optical fibre to deliver tunable ultrafast radiation to the handheld multiphoton scanner without the need of a dispersion compensation unit, this instrument has potential for a range of clinical applications. The system is used to compensate for both lateral and axial motion of the sample when imaging human skin in vivo.
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Affiliation(s)
- Ben Sherlock
- Department of Physics, Imperial College London, London, UK
| | - Sean C Warren
- Department of Physics, Imperial College London, London, UK
| | | | - Fei Yu
- Department of Physics, University of Bath, Bath, UK
| | - James Stone
- Department of Physics, University of Bath, Bath, UK
| | | | - Mark A A Neil
- Department of Physics, Imperial College London, London, UK
| | - Carl Paterson
- Department of Physics, Imperial College London, London, UK
| | | | - Chris Dunsby
- Department of Physics, Imperial College London, London, UK
- Centre for Pathology, Imperial College London, London, UK
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14
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Kapsokalyvas D, van Hoof M, Wigren S, Chimhanda T, Kuijpers HJ, Ramaekers FCS, Stokroos RJ, van Zandvoort MAMJ. Investigating the race for the surface and skin integration in clinically retrieved abutments with two-photon microscopy. Colloids Surf B Biointerfaces 2017; 159:97-107. [PMID: 28780465 DOI: 10.1016/j.colsurfb.2017.07.072] [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: 04/03/2017] [Revised: 07/14/2017] [Accepted: 07/26/2017] [Indexed: 12/14/2022]
Abstract
Bone conduction hearing implants can rehabilitate some types of hearing loss. A hydroxyapatite (HA)-coated skin-penetrating abutment was developed to allow for soft tissue preservation and increased skin-abutment adherence. Inflammation is thought to relate to bacterial infection of pockets around the abutment. Upon integration, the host's ability to cover the abutment surface ("race for the surface"), and thus control and prevent competitive bacteria from colonizing it, is improved. However, the attachment mechanisms behind it are not clear. In this study, we applied two-photon microscopy to visualize tissue attachment on abutments retrieved from patients. Skin integration markers were validated and applied to four HA-coated abutments. Evidence of skin integration was found, including the presence of hemidesmosomes, a basement membrane, dermal collagen and vascularization. Cases with clinical signs of severe inflammation and evident biofilm formation showed limited skin integration based on these indicators, confirming the applicability of the "race for the surface" model.
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Affiliation(s)
- D Kapsokalyvas
- Department of Molecular Cell Biology, CARIM School for Cardiovascular diseases, Maastricht University Medical Center, UNS 50, 6229 ER Maastricht, The Netherlands
| | - M van Hoof
- Department of Otorhinolaryngology and Head and Neck Surgery, Maastricht University Medical Center, PO Box 5800, 6202, AZ, Maastricht, The Netherlands.
| | - S Wigren
- Cochlear Bone Anchored Solutions, AB, Mölnlycke, Sweden
| | - T Chimhanda
- Department of Molecular Cell Biology, CARIM School for Cardiovascular diseases, Maastricht University Medical Center, UNS 50, 6229 ER Maastricht, The Netherlands
| | - H J Kuijpers
- Department of Molecular Cell Biology, CARIM School for Cardiovascular diseases, Maastricht University Medical Center, UNS 50, 6229 ER Maastricht, The Netherlands
| | - F C S Ramaekers
- Department of Molecular Cell Biology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - R J Stokroos
- Department of Otorhinolaryngology and Head and Neck Surgery, Maastricht University Medical Center, PO Box 5800, 6202, AZ, Maastricht, The Netherlands
| | - M A M J van Zandvoort
- Department of Molecular Cell Biology, CARIM School for Cardiovascular diseases, Maastricht University Medical Center, UNS 50, 6229 ER Maastricht, The Netherlands
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15
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Ling Y, Li C, Feng K, Palmer S, Appleton PL, Lang S, McGloin D, Huang Z, Nabi G. Second harmonic generation (SHG) imaging of cancer heterogeneity in ultrasound guided biopsies of prostate in men suspected with prostate cancer. JOURNAL OF BIOPHOTONICS 2017; 10:911-918. [PMID: 27545683 DOI: 10.1002/jbio.201600090] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 07/13/2016] [Accepted: 07/19/2016] [Indexed: 05/11/2023]
Abstract
Prostate cancer is a multifocal disease with characteristic heterogeneity and foci that can range from low grade indolent to aggressive disease. The latter is characterised by the well-established histopathological Gleason grading system used in the current clinical care. Nevertheless, a large discrepancy exists on initial biopsy and after the final radical prostatectomy. Moreover, there is no reliable imaging modality to study these foci, in particular at the level of the cells and surrounding matrix. Extracellular matrix (ECM) remodelling is significant in cancer progression with collagen as the dominant structural component providing mechanical strength and flexibility of tissue. In this study, the collagen assembly in prostate tissue was investigated with second harmonic generation (SHG) microscopy: malignant foci demonstrated a reticular pattern, with a typical collagen pattern for each Gleason score. The orientation of collagen for each biopsy was computed by applying a ratio of the anisotropic and isotropic collagen fibres. This value was found to be distinct for each Gleason score. The findings suggest that this approach can not only be used to detect prostate cancer, but also can act as a potential biomarker for cancer aggressiveness.
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Affiliation(s)
- Yuting Ling
- Academic Section of Urology, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
- School of Science and Engineering, University of Dundee, Dundee, DD1 4HN, Scotland, UK
| | - Chunhui Li
- Academic Section of Urology, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
- School of Science and Engineering, University of Dundee, Dundee, DD1 4HN, Scotland, UK
| | - Kairui Feng
- School of Science and Engineering, University of Dundee, Dundee, DD1 4HN, Scotland, UK
| | - Scott Palmer
- Academic Section of Urology, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Paul L Appleton
- Dundee Imaging Facility, School of Medicine, University of Dundee, Dundee, DD1 9SY, UK
| | - Stephen Lang
- Department of Pathology, Ninewells Hospital, Dundee, DD1 9SY, UK
| | - David McGloin
- School of Science and Engineering, University of Dundee, Dundee, DD1 4HN, Scotland, UK
| | - Zhihong Huang
- School of Science and Engineering, University of Dundee, Dundee, DD1 4HN, Scotland, UK
| | - Ghulam Nabi
- Academic Section of Urology, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
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16
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SHG-specificity of cellular Rootletin filaments enables naïve imaging with universal conservation. Sci Rep 2017; 7:39967. [PMID: 28059168 PMCID: PMC5216331 DOI: 10.1038/srep39967] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 11/30/2016] [Indexed: 02/01/2023] Open
Abstract
Despite growing demand for truly naïve imaging, label-free observation of cilium-related structure remains challenging, and validation of the pertinent molecules is correspondingly difficult. In this study, in retinas and cultured cells, we distinctively visualized Rootletin filaments in rootlets in the second harmonic generation (SHG) channel, integrated in custom coherent nonlinear optical microscopy (CNOM) with a simple, compact, and ultra-broadband supercontinuum light source. This SHG signal was primarily detected on rootlets of connecting cilia in the retinal photoreceptor and was validated by colocalization with anti-Rootletin staining. Transfection of cells with Rootletin fragments revealed that the SHG signal can be ascribed to filaments assembled from the R234 domain, but not to cross-striations assembled from the R123 domain. Consistent with this, Rootletin-depleted cells lacked SHG signal expected as centrosome linker. As a proof of concept, we confirmed that similar fibrous SHG was observed even in unicellular ciliates. These findings have potential for broad applications in clinical diagnosis and biophysical experiments with various organisms.
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17
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Krafft C. Modern trends in biophotonics for clinical diagnosis and therapy to solve unmet clinical needs. JOURNAL OF BIOPHOTONICS 2016; 9:1362-1375. [PMID: 27943650 DOI: 10.1002/jbio.201600290] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
This contribution covers recent original research papers in the biophotonics field. The content is organized into main techniques such as multiphoton microscopy, Raman spectroscopy, infrared spectroscopy, optical coherence tomography and photoacoustic tomography, and their applications in the context of fluid, cell, tissue and skin diagnostics. Special attention is paid to vascular and blood flow diagnostics, photothermal and photodynamic therapy, tissue therapy, cell characterization, and biosensors for biomarker detection.
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Affiliation(s)
- Christoph Krafft
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745, Jena, Germany
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18
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Yim JH, Jeong KH, Shin MK. Comparative study of skin autofluorescence expression in atopic dermatitis and psoriasis: A prospective in vivo study. Skin Res Technol 2016; 23:169-175. [PMID: 27511797 DOI: 10.1111/srt.12315] [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] [Accepted: 06/21/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND/PURPOSE Treatment of atopic dermatitis (AD) and psoriasis requires their differentiation from other eczematoid dermatitis and a determination of disease severity. However, both can be clinically difficult and the findings subjectively interpreted. We investigated the utility of in vivo autofluorescence (AF) measurements for diagnosis of both diseases, and determination of severity. MATERIALS AND METHODS Thirty patients with AD and 30 with psoriasis were recruited, together with sex- and age-matched patients with healthy skin. AF intensity was measured using the EcoSkin® fluorescence video dermatoscope. In AD and psoriasis patients, AF in non-sun-exposed lesional and non-lesional skin was measured. To identify the locations that reflect characteristics of AD, AF was also measured at the other sites in the patients with AD. RESULTS AD was associated with lower AF and psoriasis with higher AF intensity peaking around 620 nm. In addition, skin AF intensity of each disease was associated with severity of lesion. CONCLUSIONS Non-invasive measurement of skin AF in vivo can aid in diagnosis of AD and psoriasis as well as in treatment monitoring.
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Affiliation(s)
- J H Yim
- Department of Dermatology, College of Medicaine, Kyung Hee University, Seoul, Korea
| | - K H Jeong
- Department of Dermatology, College of Medicaine, Kyung Hee University, Seoul, Korea
| | - M K Shin
- Department of Dermatology, College of Medicaine, Kyung Hee University, Seoul, Korea
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19
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Fractional carbon dioxide laser versus low-dose UVA-1 phototherapy for treatment of localized scleroderma: a clinical and immunohistochemical randomized controlled study. Lasers Med Sci 2016; 31:1707-1715. [PMID: 27510285 DOI: 10.1007/s10103-016-2041-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 07/25/2016] [Indexed: 12/26/2022]
Abstract
Morphea is a rare fibrosing skin disorder that occurs as a result of abnormal homogenized collagen synthesis. Fractional ablative laser resurfacing has been used effectively in scar treatment via abnormal collagen degradation and induction of healthy collagen synthesis. Therefore, fractional ablative laser can provide an effective modality in treatment of morphea. The study aimed at evaluating the efficacy of fractional carbon dioxide laser as a new modality for the treatment of localized scleroderma and to compare its results with the well-established method of UVA-1 phototherapy. Seventeen patients with plaque and linear morphea were included in this parallel intra-individual comparative randomized controlled clinical trial. Each with two comparable morphea lesions that were randomly assigned to either 30 sessions of low-dose (30 J/cm2) UVA-1 phototherapy (340-400 nm) or 3 sessions of fractional CO2 laser (10,600 nm-power 25 W). The response to therapy was then evaluated clinically and histopathologically via validated scoring systems. Immunohistochemical analysis of TGF-ß1 and MMP1 was done. Patient satisfaction was also assessed. Wilcoxon signed rank test for paired (matched) samples and Spearman rank correlation equation were used as indicated. Comparing the two groups, there was an obvious improvement with fractional CO2 laser that was superior to that of low-dose UVA-1 phototherapy. Statistically, there was a significant difference in the clinical scores (p = 0.001), collagen homogenization scores (p = 0.012), and patient satisfaction scores (p = 0.001). In conclusion, fractional carbon dioxide laser is a promising treatment modality for cases of localized morphea, with proved efficacy of this treatment on clinical and histopathological levels.
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20
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Cicchi R, Rossi F, Alfieri D, Bacci S, Tatini F, De Siena G, Paroli G, Pini R, Pavone FS. Observation of an improved healing process in superficial skin wounds after irradiation with a blue-LED haemostatic device. JOURNAL OF BIOPHOTONICS 2016; 9:645-655. [PMID: 26756549 DOI: 10.1002/jbio.201500191] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 11/19/2015] [Accepted: 12/07/2015] [Indexed: 06/05/2023]
Abstract
The healing process of superficial skin wounds treated with a blue-LED haemostatic device is studied. Four mechanical abrasions are produced on the back of 10 Sprague Dawley rats: two are treated with the blue-LED device, while the other two are left to naturally recover. Visual observations, non-linear microscopic imaging, as well as histology and immunofluorescence analyses are performed 8 days after the treatment, demonstrating no adverse reactions neither thermal damages in both abraded areas and surrounding tissue. A faster healing process and a better-recovered skin morphology are observed: the treated wounds show a reduced inflammatory response and a higher collagen content. Blue LED induced photothermal effect on superficial abrasions.
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Affiliation(s)
- Riccardo Cicchi
- National Institute of Optics, National Research Council (INO-CNR), Florence, 50125, Italy
- European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, Sesto Fiorentino, 50019, Italy
| | - Francesca Rossi
- Institute of Applied Physics, National Research Council (IFAC-CNR), Sesto Fiorentino, 50019, Italy.
| | | | - Stefano Bacci
- Department of Clinical and Experimental Medicine, University of Florence, Florence, 50139, Italy
| | - Francesca Tatini
- Institute of Applied Physics, National Research Council (IFAC-CNR), Sesto Fiorentino, 50019, Italy
| | - Gaetano De Siena
- Institute of Applied Physics, National Research Council (IFAC-CNR), Sesto Fiorentino, 50019, Italy
| | - Gaia Paroli
- Department of Clinical and Experimental Medicine, University of Florence, Florence, 50139, Italy
| | - Roberto Pini
- Institute of Applied Physics, National Research Council (IFAC-CNR), Sesto Fiorentino, 50019, Italy
| | - Francesco S Pavone
- National Institute of Optics, National Research Council (INO-CNR), Florence, 50125, Italy
- European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, Sesto Fiorentino, 50019, Italy
- Department of Physics, University of Florence, Sesto Fiorentino, 50019, Italy
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21
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Houle MA, Couture CA, Bancelin S, Van der Kolk J, Auger E, Brown C, Popov K, Ramunno L, Légaré F. Analysis of forward and backward Second Harmonic Generation images to probe the nanoscale structure of collagen within bone and cartilage. JOURNAL OF BIOPHOTONICS 2015; 8:993-1001. [PMID: 26349534 DOI: 10.1002/jbio.201500150] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 07/17/2015] [Accepted: 07/27/2015] [Indexed: 05/22/2023]
Abstract
Collagen ultrastructure plays a central role in the function of a wide range of connective tissues. Studying collagen structure at the microscopic scale is therefore of considerable interest to understand the mechanisms of tissue pathologies. Here, we use second harmonic generation microscopy to characterize collagen structure within bone and articular cartilage in human knees. We analyze the intensity dependence on polarization and discuss the differences between Forward and Backward images in both tissues. Focusing on articular cartilage, we observe an increase in Forward/Backward ratio from the cartilage surface to the bone. Coupling these results to numerical simulations reveals the evolution of collagen fibril diameter and spatial organization as a function of depth within cartilage.
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Affiliation(s)
- Marie-Andrée Houle
- Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunication, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1S2, Canada
| | - Charles-André Couture
- Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunication, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1S2, Canada
| | - Stéphane Bancelin
- Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunication, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1S2, Canada
| | - Jarno Van der Kolk
- University of Ottawa, Department of Physics, MacDonald Hill, 150 Louis Pasteur, ON, K1N 6N5, Canada
| | - Etienne Auger
- Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunication, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1S2, Canada
| | - Cameron Brown
- University of Oxford, Botnar Research Center, NDORMS, UK
| | - Konstantin Popov
- University of Ottawa, Department of Physics, MacDonald Hill, 150 Louis Pasteur, ON, K1N 6N5, Canada
| | - Lora Ramunno
- University of Ottawa, Department of Physics, MacDonald Hill, 150 Louis Pasteur, ON, K1N 6N5, Canada
| | - François Légaré
- Institut National de la Recherche Scientifique - Centre Énergie, Matériaux et Télécommunication, 1650 boulevard Lionel-Boulet, Varennes, QC, J3X 1S2, Canada.
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22
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Ogrinc UB, Senčar S, Lenasi H. Novel minimally invasive laser treatment of urinary incontinence in women. Lasers Surg Med 2015; 47:689-97. [PMID: 26388213 PMCID: PMC5396289 DOI: 10.1002/lsm.22416] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2015] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVE Urinary incontinence (UI) is a common disorder that affects women of various ages and impacts all aspects of life. Our aim was to evaluate the non-invasive erbium:yttrium-aluminum-garnet (Er:YAG) laser that exploits its thermal effect and has been used in reconstructive and rejuvenation surgery as a potential treatment strategy for stress UI (SUI) and mixed UI (MUI). STUDY DESIGN/MATERIALS AND METHODS We included 175 women (aged 49.7 ± 10 years) with newly diagnosed SUI (66% of women) and MUI (34%), respectively. Patients were clinically examined and classified by incontinence types (SUI and MUI) and grades (mild, moderate, severe, and very severe) using International Consultation on Incontinence Modular Questionnaire (ICIQ) and assessing Incontinence Severity Index (ISI). Using Er:YAG laser, we performed on average 2.5 ± 0.5 procedures in each woman separated by a 2 month period. At each session, clinical examination was performed, ICIQ and ISI assessed and treatment discomfort measured with visual analog system (VAS) pain scale, and adverse effects and patients' satisfaction were followed. Follow-ups were performed at 2, 6, and 12 months after the treatment. RESULTS After the treatment, ISI decreased for 2.6 ± 1.0 points in patients diagnosed with mild UI before the treatment, for 3.6 ± 1.4 points in those with moderate UI, for 5.7 ± 1.8 points in those with severe UI and for 8.4 ± 2.6 in those with very severe UI (P < 0.001, paired samples t-test). Altogether, in 77% patients diagnosed with SUI, a significant improvement was found after treatment, while only 34% of women with MUI exhibited no UI at one year follow-up. Age did not affect the outcome. No major adverse effects were noticed in either group. CONCLUSION The results of our study, have shown that new non-invasive Er:YAG laser could be regarded as a promising additional treatment strategy for SUI with at least one year lasting positive effects. On the other hand, it does not seem appropriate for treating MUI.
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Affiliation(s)
| | | | - Helena Lenasi
- Institute of PhysiologyMedical FacultyUniversity of LjubljanaZaloška 4Ljubljana1000Slovenia
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23
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Zhu XQ, Xu YH, Liao CX, Liu WG, Cheng KK, Chen JX. Differentiating the extent of cartilage repair in rabbit ears using nonlinear optical microscopy. J Microsc 2015; 260:219-26. [PMID: 26366638 DOI: 10.1111/jmi.12288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Accepted: 06/09/2015] [Indexed: 11/26/2022]
Abstract
Nonlinear optical microscopy (NLOM) was used as a noninvasive and label-free tool to detect and quantify the extent of the cartilage recovery. Two cartilage injury models were established in the outer ears of rabbits that created a different extent of cartilage recovery based on the presence or absence of the perichondrium. High-resolution NLOM images were used to measure cartilage repair, specifically through spectral analysis and image texture. In contrast to a wound lacking a perichondrium, wounds with intact perichondria demonstrated significantly larger TPEF signals from cells and matrix, coarser texture indicating the more deposition of type I collagen. Spectral analysis of cells and matrix can reveal the matrix properties and cell growth. In addition, texture analysis of NLOM images showed significant differences in the distribution of cells and matrix of repaired tissues with or without perichondrium. Specifically, the decay length of autocorrelation coefficient based on TPEF images is 11.2 ± 1.1 in Wound 2 (with perichondrium) and 7.5 ± 2.0 in Wound 1 (without perichondrium), indicating coarser image texture and faster growth of cells in repaired tissues with perichondrium (p < 0.05). Moreover, the decay length of autocorrelation coefficient based on collagen SHG images also showed significant difference between Wound 2 and 1 (16.2 ± 1.2 vs. 12.2 ± 2.1, p < 0.05), indicating coarser image texture and faster deposition of collagen in repaired tissues with perichondrium (Wound 2). These findings suggest that NLOM is an ideal tool for studying cartilage repair, with potential applications in clinical medicine. NLOM can capture macromolecular details and distinguish between different extents of cartilage repair without the need for labelling agents.
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Affiliation(s)
- X Q Zhu
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, P. R. China
| | - Y H Xu
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, P. R. China
| | - C X Liao
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, P. R. China
| | - W G Liu
- Department of Orthopedics, Affiliated Union Hospital of Fujian Medical University, Fuzhou, P. R. China
| | - K K Cheng
- Institute of Bioproduct Development & Department of Bioprocess Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - J X Chen
- Institute of Laser and Optoelectronics Technology, Fujian Provincial Key Laboratory for Photonics Technology, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, P. R. China
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Sherlock B, Warren S, Stone J, Neil M, Paterson C, Knight J, French P, Dunsby C. Fibre-coupled multiphoton microscope with adaptive motion compensation. BIOMEDICAL OPTICS EXPRESS 2015; 6:1876-1884. [PMID: 26137387 PMCID: PMC4467716 DOI: 10.1364/boe.6.001876] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/20/2015] [Accepted: 03/20/2015] [Indexed: 06/04/2023]
Abstract
To address the challenge of sample motion during in vivo imaging, we present a fibre-coupled multiphoton microscope with active axial motion compensation. The position of the sample surface is measured using optical coherence tomography and fed back to a piezo actuator that adjusts the axial location of the objective to compensate for sample motion. We characterise the system's performance and demonstrate that it can compensate for axial sample velocities up to 700 µm/s. Finally we illustrate the impact of motion compensation when imaging multiphoton excited autofluorescence in ex vivo mouse skin.
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Affiliation(s)
- Ben Sherlock
- Department of Physics, Imperial College London, London, SW7 2AZ,
UK
| | - Sean Warren
- Department of Physics, Imperial College London, London, SW7 2AZ,
UK
| | - James Stone
- Department of Physics, University of Bath, Bath, BA2 7AY,
UK
| | - Mark Neil
- Department of Physics, Imperial College London, London, SW7 2AZ,
UK
| | - Carl Paterson
- Department of Physics, Imperial College London, London, SW7 2AZ,
UK
| | - Jonathan Knight
- Department of Physics, University of Bath, Bath, BA2 7AY,
UK
| | - Paul French
- Department of Physics, Imperial College London, London, SW7 2AZ,
UK
| | - Chris Dunsby
- Department of Physics, Imperial College London, London, SW7 2AZ,
UK
- Centre for Histopathology, Imperial College London, London, SW7 2AZ,
UK
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Boddupalli A, Bratlie KM. Multimodal imaging of harmonophores and application of high content imaging for early cancer detection. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.md.2015.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Clinical nonlinear laser imaging of human skin: a review. BIOMED RESEARCH INTERNATIONAL 2014; 2014:903589. [PMID: 25250337 PMCID: PMC4163368 DOI: 10.1155/2014/903589] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 07/11/2014] [Indexed: 11/23/2022]
Abstract
Nonlinear optical microscopy has the potential of being used in vivo as a noninvasive imaging modality for both epidermal and dermal imaging. This paper reviews the capabilities of nonlinear microscopy as a noninvasive high-resolution tool for clinical skin inspection. In particular, we show that two-photon fluorescence microscopy can be used as a diagnostic tool for characterizing epidermal layers by means of a morphological examination. Additional functional information on the metabolic state of cells can be provided by measuring the fluorescence decay of NADH. This approach allows differentiating epidermal layers having different structural and cytological features and has the potential of diagnosing pathologies in a very early stage. Regarding therapy follow-up, we demonstrate that nonlinear microscopy could be successfully used for monitoring the effect of a treatment. In particular, combined two-photon fluorescence and second-harmonic generation microscopy were used in vivo for monitoring collagen remodeling after microablative fractional laser resurfacing and for quantitatively monitoring psoriasis on the basis of the morphology of epidermal cells and dermal papillae. We believe that the described microscopic modalities could find in the near future a stable place in a clinical dermatological setting for quantitative diagnostic purposes and as a monitoring method for various treatments.
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Kapsokalyvas D, Schiffers PM, Maij N, Suylen DP, Hackeng TM, van Zandvoort MA, De Mey JG. Imaging evidence for endothelin ETA/ETB receptor heterodimers in isolated rat mesenteric resistance arteries. Life Sci 2014; 111:36-41. [DOI: 10.1016/j.lfs.2014.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/16/2014] [Accepted: 07/02/2014] [Indexed: 01/25/2023]
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Kapsokalyvas D, Cicchi R, Bruscino N, Alfieri D, Prignano F, Massi D, Lotti T, Pavone FS. In-vivo imaging of psoriatic lesions with polarization multispectral dermoscopy and multiphoton microscopy. BIOMEDICAL OPTICS EXPRESS 2014; 5:2405-19. [PMID: 25071974 PMCID: PMC4102374 DOI: 10.1364/boe.5.002405] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/25/2014] [Accepted: 04/28/2014] [Indexed: 05/18/2023]
Abstract
Psoriasis is a skin autoimmune disease characterized by hyperkeratosis, hyperproliferation of the epidermis and dilatation of dermal papillary blood vessels. Healthy skin (5 volunteers) and psoriatic lesions (3 patients) were visualized in vivo, with high contrast and resolution, with a Polarization Multispectral Dermoscope and a Multiphoton Microscope. Psoriatic features were identified and quantified. The effective diameter of the superficial blood vessels was measured at 35.2 ± 7.2 μm and the elongated dermal papillae had an effective diameter of 64.2 ± 22.6 μm. The methodologies developed could be employed for quantitative diagnostic purposes and furthermore serve as a monitoring method of the effect of personalized treatments.
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Affiliation(s)
- Dimitrios Kapsokalyvas
- European Laboratory for Non-Linear Spectroscopy (LENS) University of Florence, Sesto-Fiorentino, 50019, Italy
| | - Riccardo Cicchi
- European Laboratory for Non-Linear Spectroscopy (LENS) University of Florence, Sesto-Fiorentino, 50019, Italy
- National Institute of Optics, National Research Council (INO-CNR), 50125, Florence, Italy
| | - Nicola Bruscino
- Division of Clinical, Preventive and Oncology Dermatology, Department of Critical Care Medicine and Surgery, University of Florence, 50129, Florence, Italy
| | | | - Francesca Prignano
- Division of Clinical, Preventive and Oncology Dermatology, Department of Critical Care Medicine and Surgery, University of Florence, 50129, Florence, Italy
| | - Daniela Massi
- Department of Surgery and Translational Medicine, University of Florence, 50134, Florence, Italy
| | - Torello Lotti
- Department of Dermatology and Venereology, University Guglielmo Marconi, 00193, Rome, Italy
| | - Francesco S. Pavone
- European Laboratory for Non-Linear Spectroscopy (LENS) University of Florence, Sesto-Fiorentino, 50019, Italy
- National Institute of Optics, National Research Council (INO-CNR), 50125, Florence, Italy
- Department of Physics, University of Florence, 50019, Sesto Fiorentino, Italy
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