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Vasudevan S, Vogt WC, Weininger S, Pfefer TJ. Melanometry for objective evaluation of skin pigmentation in pulse oximetry studies. COMMUNICATIONS MEDICINE 2024; 4:138. [PMID: 38992188 PMCID: PMC11239860 DOI: 10.1038/s43856-024-00550-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/11/2024] [Indexed: 07/13/2024] Open
Abstract
Pulse oximetry enables real-time, noninvasive monitoring of arterial blood oxygen levels. However, results can vary with skin color, thus detecting disparities during clinical validation studies requires an accurate measure of skin pigmentation. Recent clinical studies have used subjective methods such as self-reported color, race/ethnicity to categorize skin. Melanometers based on optical reflectance may offer a more effective, objective approach to assess pigmentation. Here, we review melanometry approaches and assess evidence supporting their use as clinical research tools. We compare performance data, including repeatability, robustness to confounders, and compare devices to each other, to subjective methods, and high-quality references. Finally, we propose best practices for evaluating melanometers and discuss alternate optical approaches that may improve accuracy. Whilst evidence indicates that melanometers can provide superior performance to subjective approaches, we encourage additional research and standardization efforts, as these are needed to ensure consistent and reliable results in clinical studies.
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Affiliation(s)
- Sandhya Vasudevan
- Center for Devices and Radiological Health, Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD, 20993, USA.
| | - William C Vogt
- Center for Devices and Radiological Health, Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD, 20993, USA
| | - Sandy Weininger
- Center for Devices and Radiological Health, Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD, 20993, USA
| | - T Joshua Pfefer
- Center for Devices and Radiological Health, Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD, 20993, USA
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2
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Pachyn E, Aumiller M, Freymüller C, Linek M, Volgger V, Buchner A, Rühm A, Sroka R. Investigation on the influence of the skin tone on hyperspectral imaging for free flap surgery. Sci Rep 2024; 14:13979. [PMID: 38886457 PMCID: PMC11183063 DOI: 10.1038/s41598-024-64549-9] [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: 01/15/2024] [Accepted: 06/10/2024] [Indexed: 06/20/2024] Open
Abstract
Hyperspectral imaging (HSI) is a new emerging modality useful for the noncontact assessment of free flap perfusion. This measurement technique relies on the optical properties within the tissue. Since the optical properties of hemoglobin (Hb) and melanin overlap, the results of the perfusion assessment and other tissue-specific parameters are likely to be distorted by the melanin, especially at higher melanin concentrations. Many spectroscopic devices have been shown to struggle with a melanin related bias, which results in a clinical need to improve non-invasive perfusion assessment, especially for a more pigmented population. This study investigated the influence of skin tones on tissue indices measurements using HSI. In addition, other factors that might affect HSI, such as age, body mass index (BMI), sex or smoking habits, were also considered. Therefore, a prospective feasibility study was conducted, including 101 volunteers from whom tissue indices measurements were performed on 16 different body sites. Skin tone classification was performed using the Fitzpatrick skin type classification questionnaire, and the individual typology angle (ITA) acquired from the RGB images was calculated simultaneously with the measurements. Tissue indices provided by the used HSI-device were correlated to the possible influencing factors. The results show that a dark skin tone and, therefore, higher levels of pigmentation influence the HSI-derived tissue indices. In addition, possible physiological factors influencing the HSI-measurements were found. In conclusion, the HSI-based tissue indices can be used for perfusion assessment for people with lighter skin tone levels but show limitations in people with darker skin tones. Furthermore, it could be used for a more individual perfusion assessment if different physiological influencing factors are respected.
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Affiliation(s)
- Ester Pachyn
- Department of Urology, Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstrasse 20, 82152, Planegg, Germany.
| | - Maximilian Aumiller
- Department of Urology, Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstrasse 20, 82152, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Christian Freymüller
- Department of Urology, Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstrasse 20, 82152, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Matthäus Linek
- Department of Urology, Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstrasse 20, 82152, Planegg, Germany
| | - Veronika Volgger
- Department of Otorhinolaryngology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Alexander Buchner
- Department of Urology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Adrian Rühm
- Department of Urology, Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstrasse 20, 82152, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Ronald Sroka
- Department of Urology, Laser-Forschungslabor, LIFE Center, University Hospital, LMU Munich, Fraunhoferstrasse 20, 82152, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, 81377, Munich, Germany
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Campbell JM, Gosnell M, Agha A, Handley S, Knab A, Anwer AG, Bhargava A, Goldys EM. Label-Free Assessment of Key Biological Autofluorophores: Material Characteristics and Opportunities for Clinical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403761. [PMID: 38775184 DOI: 10.1002/adma.202403761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/04/2024] [Indexed: 06/13/2024]
Abstract
Autofluorophores are endogenous fluorescent compounds that naturally occur in the intra and extracellular spaces of all tissues and organs. Most have vital biological functions - like the metabolic cofactors NAD(P)H and FAD+, as well as the structural protein collagen. Others are considered to be waste products - like lipofuscin and advanced glycation end products - which accumulate with age and are associated with cellular dysfunction. Due to their natural fluorescence, these materials have great utility for enabling non-invasive, label-free assays with direct ties to biological function. Numerous technologies, with different advantages and drawbacks, are applied to their assessment, including fluorescence lifetime imaging microscopy, hyperspectral microscopy, and flow cytometry. Here, the applications of label-free autofluorophore assessment are reviewed for clinical and health-research applications, with specific attention to biomaterials, disease detection, surgical guidance, treatment monitoring, and tissue assessment - fields that greatly benefit from non-invasive methodologies capable of continuous, in vivo characterization.
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Affiliation(s)
- Jared M Campbell
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | | | - Adnan Agha
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Shannon Handley
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Aline Knab
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Ayad G Anwer
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Akanksha Bhargava
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
| | - Ewa M Goldys
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW, 2033, Australia
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Hasse S, Sommer MC, Guenther S, Schulze C, Bekeschus S, von Woedtke T. Exploring the Influence of Cold Plasma on Epidermal Melanogenesis In Situ and In Vitro. Int J Mol Sci 2024; 25:5186. [PMID: 38791225 PMCID: PMC11120903 DOI: 10.3390/ijms25105186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 04/30/2024] [Accepted: 05/05/2024] [Indexed: 05/26/2024] Open
Abstract
Epidermal melanin synthesis determines an individual's skin color. In humans, melanin is formed by melanocytes within the epidermis. The process of melanin synthesis strongly depends on a range of cellular factors, including the fine-tuned interplay with reactive oxygen species (ROS). In this context, a role of cold atmospheric plasma (CAP) on melanin synthesis was proposed due to its tunable ROS generation. Herein, the argon-driven plasma jet kINPen® MED was employed, and its impact on melanin synthesis was evaluated by comparison with known stimulants such as the phosphodiesterase inhibitor IBMX and UV radiation. Different available model systems were employed, and the melanin content of both cultured human melanocytes (in vitro) and full-thickness human skin biopsies (in situ) were analyzed. A histochemical method detected melanin in skin tissue. Cellular melanin was measured by NIR autofluorescence using flow cytometry, and a highly sensitive HPLC-MS method was applied, which enabled the differentiation of eu- and pheomelanin by their degradation products. The melanin content in full-thickness human skin biopsies increased after repeated CAP exposure, while there were only minor effects in cultured melanocytes compared to UV radiation and IBMX treatment. Based on these findings, CAP does not appear to be a useful option for treating skin pigmentation disorders. On the other hand, the risk of hyperpigmentation as an adverse effect of CAP application for wound healing or other dermatological diseases seems to be neglectable.
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Affiliation(s)
- Sybille Hasse
- Leibniz Institute for Plasma Science and Technology e.V. (INP), a Member of the Leibniz Health Technologies Research Alliance, Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (M.-C.S.); (S.B.); (T.v.W.)
| | - Marie-Christine Sommer
- Leibniz Institute for Plasma Science and Technology e.V. (INP), a Member of the Leibniz Health Technologies Research Alliance, Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (M.-C.S.); (S.B.); (T.v.W.)
| | - Sebastian Guenther
- Institute of Pharmacy, Department Pharmaceutical Biology, Greifswald University, Friedrich-Ludwig-Jahn-Str. 17, 17489 Greifswald, Germany; (S.G.); (C.S.)
| | - Christian Schulze
- Institute of Pharmacy, Department Pharmaceutical Biology, Greifswald University, Friedrich-Ludwig-Jahn-Str. 17, 17489 Greifswald, Germany; (S.G.); (C.S.)
| | - Sander Bekeschus
- Leibniz Institute for Plasma Science and Technology e.V. (INP), a Member of the Leibniz Health Technologies Research Alliance, Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (M.-C.S.); (S.B.); (T.v.W.)
| | - Thomas von Woedtke
- Leibniz Institute for Plasma Science and Technology e.V. (INP), a Member of the Leibniz Health Technologies Research Alliance, Felix-Hausdorff-Str. 2, 17489 Greifswald, Germany; (M.-C.S.); (S.B.); (T.v.W.)
- Institute for Hygiene and Environmental Medicine, Greifswald University Medical Centre, Walther-Rathenau-Str. 48, 17489 Greifswald, Germany
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Guo K, Wang Y, Feng ZX, Lin XY, Wu ZR, Zhong XC, Zhuang ZM, Zhang T, Chen J, Tan WQ. Recent Development and Applications of Polydopamine in Tissue Repair and Regeneration Biomaterials. Int J Nanomedicine 2024; 19:859-881. [PMID: 38293610 PMCID: PMC10824616 DOI: 10.2147/ijn.s437854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/29/2023] [Indexed: 02/01/2024] Open
Abstract
The various tissue damages are a severe problem to human health. The limited human tissue regenerate ability requires suitable biomaterials to help damage tissue repair and regeneration. Therefore, many researchers devoted themselves to exploring biomaterials suitable for tissue repair and regeneration. Polydopamine (PDA) as a natural and multifunctional material which is inspired by mussel has been widely applied in different biomaterials. The excellent properties of PDA, such as strong adhesion, photothermal and high drug-loaded capacity, seem to be born for tissue repair and regeneration. Furthermore, PDA combined with different materials can exert unexpected effects. Thus, to inspire researchers, this review summarizes the recent and representative development of PDA biomaterials in tissue repair and regeneration. This article focuses on why apply PDA in these biomaterials and what PDA can do in different tissue injuries.
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Affiliation(s)
- Kai Guo
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Yong Wang
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Zi-Xuan Feng
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Xiao-Ying Lin
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Zhang-Rui Wu
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Xin-Cao Zhong
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Ze-Ming Zhuang
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Tao Zhang
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
| | - Jian Chen
- Department of Ultrasonography, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang Province, People’s Republic of China
| | - Wei-Qiang Tan
- Department of Plastic Surgery, Sir Run Run Shaw Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, People’s Republic of China
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Wang YJ, Chang CC, Wu YH, Huang L, Shen JW, Lu ME, Chiang HM, Lin BS. Adaptability of melanocytes post ultraviolet stimulation in patients with melasma. Lasers Surg Med 2023; 55:680-689. [PMID: 37365922 DOI: 10.1002/lsm.23699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/17/2023] [Accepted: 06/15/2023] [Indexed: 06/28/2023]
Abstract
BACKGROUND Dynamic in vivo changes in melanin in melasma lesions after exposure to ultraviolet (UV) irradiation have not been described. OBJECTIVES To determine whether melasma lesions and nearby perilesions demonstrated different adaptive responses to UV irradiation and whether the tanning responses were different among different locations on face. METHODS We collected sequential images from real-time cellular resolution full-field optical coherence tomography (CRFF-OCT) at melasma lesions and perilesions among 20 Asian patients. Quantitative and layer distribution analyses for melanin were performed using a computer-aided detection (CADe) system that utilizes spatial compounding-based denoising convolutional neural networks. RESULTS The detected melanin (D) is melanin with a diameter >0.5 µm, among which confetti melanin (C) has a diameter of >3.3 µm and corresponds to a melanosome-rich package. The calculated C/D ratio is proportional to active melanin transportation. Before UV exposure, melasma lesions had more detected melanin (p = 0.0271), confetti melanin (p = 0.0163), and increased C/D ratio (p = 0.0152) in the basal layer compared to those of perilesions. After exposure to UV irradiation, perilesions have both increased confetti melanin (p = 0.0452) and the C/D ratio (p = 0.0369) in basal layer, and this effect was most prominent in right cheek (p = 0.030). There were however no significant differences in the detected, confetti, or granular melanin areas before and after exposure to UV irradiation in melasma lesions in all the skin layers. CONCLUSIONS Hyperactive melanocytes with a higher baseline C/D ratio were noted in the melasma lesions. They were "fixed" on the plateau and were not responsive to UV irradiation regardless of the location on face. Perilesions retained adaptability with a dynamic response to UV irradiation, in which more confetti melanin was shed, mainly in the basal layer. Therefore, aggravating effect of UV on melasma was mainly due to UV-responsive perilesions rather than lesions.
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Affiliation(s)
- Yen-Jen Wang
- Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Cosmetic Applications and Management, MacKay Junior College of Medicine, Nursing, and Management, New Taipei City, Taiwan
| | - Chang-Cheng Chang
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
- Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, Tainan, Taiwan
- School of Medicine, College of Medicine, China Medical University Hospital, Taichung, Taiwan
- Aesthetic Medical Center, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Hung Wu
- Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
- Department of Medicine, Mackay Medical College, New Taipei City, Taiwan
| | - Ling Huang
- Clinical Development, Apollo Medical Optics, Ltd., Taipei, Taiwan
| | - Jia-Wei Shen
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
| | - Meng-En Lu
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
| | - Hsiu-Mei Chiang
- Department of Cosmeceutics, China Medical University, Taichung, Taiwan
| | - Bor-Shyh Lin
- Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, Tainan, Taiwan
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Wakamatsu K, Ito S. Recent Advances in Characterization of Melanin Pigments in Biological Samples. Int J Mol Sci 2023; 24:ijms24098305. [PMID: 37176019 PMCID: PMC10179066 DOI: 10.3390/ijms24098305] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 04/23/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
The melanin pigments eumelanin (EM) and pheomelanin (PM), which are dark brown to black and yellow to reddish-brown, respectively, are widely found among vertebrates. They are produced in melanocytes in the epidermis, hair follicles, the choroid, the iris, the inner ear, and other tissues. The diversity of colors in animals is mainly caused by the quantity and quality of their melanin, such as by the ratios of EM versus PM. We have developed micro-analytical methods to simultaneously measure EM and PM and used these to study the biochemical and genetic fundamentals of pigmentation. The photoreactivity of melanin has become a major focus of research because of the postulated relevance of EM and PM for the risk of UVA-induced melanoma. Our biochemical methods have found application in many clinical studies on genetic conditions associated with alterations in pigmentation. Recently, besides chemical degradative methods, other methods have been developed for the characterization of melanin, and these are also discussed here.
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Affiliation(s)
- Kazumasa Wakamatsu
- Institute for Melanin Chemistry, Fujita Health University, Toyoake 470-192, Aichi, Japan
| | - Shosuke Ito
- Institute for Melanin Chemistry, Fujita Health University, Toyoake 470-192, Aichi, Japan
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Owida HA. Developments and Clinical Applications of Noninvasive Optical Technologies for Skin Cancer Diagnosis. J Skin Cancer 2022; 2022:9218847. [PMID: 36437851 PMCID: PMC9699785 DOI: 10.1155/2022/9218847] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/29/2022] [Accepted: 11/09/2022] [Indexed: 04/03/2024] Open
Abstract
Skin cancer has shown a sharp increase in prevalence over the past few decades and currently accounts for one-third of all cancers diagnosed. The most lethal form of skin cancer is melanoma, which develops in 4% of individuals. The rising prevalence and increased number of fatalities of skin cancer put a significant burden on healthcare resources and the economy. However, early detection and treatment greatly improve survival rates for patients with skin cancer. Since the rising rates of both the incidence and mortality have been particularly noticeable with melanoma, significant resources have been allocated to research aimed at earlier diagnosis and a deeper knowledge of the disease. Dermoscopy, reflectance confocal microscopy, optical coherence tomography, multiphoton-excited fluorescence imaging, and dermatofluorescence are only a few of the optical modalities reviewed here that have been employed to enhance noninvasive diagnosis of skin cancer in recent years. This review article discusses the methodology behind newly emerging noninvasive optical diagnostic technologies, their clinical applications, and advantages and disadvantages of these techniques, as well as the potential for their further advancement in the future.
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Affiliation(s)
- Hamza Abu Owida
- Medical Engineering Department, Faculty of Engineering, Al Ahliyya Amman University, Amman 19328, Jordan
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Handl J, Nyvltova P, Capek J, Cesla P, Hovsepyan A, Avetisyan S, Micankova P, Bruckova L, Stankova P, Knotkova K, Petrosyan T, Rousar T. The comparison of biological effects of bacterial and synthetic melanins in neuroblastoma cells. Food Chem Toxicol 2022; 168:113355. [PMID: 35952821 DOI: 10.1016/j.fct.2022.113355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/28/2022] [Accepted: 08/03/2022] [Indexed: 11/26/2022]
Abstract
Melanins belong to a group of pigments of different structure and origin. They can be produced synthetically or isolated from living organisms. A number of studies have reported testing of various melanins in neurological studies providing different outcomes. Because the structure of melanins can have an effect on obtained results in cell toxicity studies, we present here our original study which aimed to compare the biological effects of bacterial melanin (biotechnologically obtained from B. thuringiensis) with that of synthetic melanin in neuroblastoma cells. Both melanins were structurally characterized in detail. After melanin treatment (0-200 μg/mL), cell viability, glutathione levels, cell morphology and respiration were assessed in SH-SY5Y cells. The structural analysis showed that bacterial melanin is more hydrophilic according to the presence of larger number of -OH moieties. After melanin treatment, we found that synthetic melanin at similar dosage caused always larger cell impairment compared to bacterial melanin. In addition, more severe toxic effect of synthetic melanin was found in mitochondria. In general, we conclude that more hydrophilic, bacterial melanin induced lower toxicity in neuroblastoma cells in comparison to synthetic melanin. Our findings can be useable for neuroscientific studies estimating the potential use for study of neuroprotection, neuromodulation or neurotoxicity.
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Affiliation(s)
- Jiri Handl
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Pavlina Nyvltova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Jan Capek
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Petr Cesla
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Anichka Hovsepyan
- Scientific and Production Center "Armbiotechnology" SNPO NAS RA, 14 Gyurjyan St., Yerevan, Armenia
| | - Sona Avetisyan
- Scientific and Production Center "Armbiotechnology" SNPO NAS RA, 14 Gyurjyan St., Yerevan, Armenia
| | - Petra Micankova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Lenka Bruckova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Pavla Stankova
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Katerina Knotkova
- Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic
| | - Tigran Petrosyan
- Department of Physiology and Pathophysiology, Medical Institute, Yerevan Haybusak University, 6 Abelyan St., Yerevan, Armenia
| | - Tomas Rousar
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10, Pardubice, Czech Republic.
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Bouzin M, Marini M, Chirico G, Granucci F, Mingozzi F, Colombo R, D'Alfonso L, Sironi L, Collini M. Melanin concentration maps by label-free super-resolution photo-thermal imaging on melanoma biopsies. BIOMEDICAL OPTICS EXPRESS 2022; 13:1173-1187. [PMID: 35414966 PMCID: PMC8973199 DOI: 10.1364/boe.445945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 05/04/2023]
Abstract
Surgical excision followed by histopathological examination is the gold standard for melanoma screening. However, the color-based inspection of hematoxylin-and-eosin-stained biopsies does not provide a space-resolved quantification of the melanin content in melanocytic lesions. We propose a non-destructive photo-thermal imaging method capable of characterizing the microscopic distribution and absolute concentration of melanin pigments in excised melanoma biopsies. By exploiting the photo-thermal effect primed by melanin absorption of visible laser light we obtain label-free super-resolution far-infrared thermal images of tissue sections where melanin is spatially mapped at sub-diffraction 40-μm resolution. Based on the finite-element simulation of the full 3D heat transfer model, we are able to convert temperature maps into quantitative images of the melanin molar concentration on B16 murine melanoma biopsies, with 4·10-4 M concentration sensitivity. Being readily applicable to human melanoma biopsies in combination with hematoxylin-and-eosin staining, the proposed approach could complement traditional histopathology in the characterization of pigmented lesions ex-vivo.
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Affiliation(s)
- Margaux Bouzin
- Physics Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126, Milano, Italy
- Equal contribution
| | - Mario Marini
- Physics Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126, Milano, Italy
- Equal contribution
| | - Giuseppe Chirico
- Physics Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126, Milano, Italy
- CNR Institute for Applied Science and Intelligent Systems, Via Campi Flegrei 34, 80078, Pozzuoli, Italy
| | - Francesca Granucci
- Biotechnology and Biosciences Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy
| | - Francesca Mingozzi
- Biotechnology and Biosciences Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy
| | - Roberto Colombo
- Department of Earth and Environmental Sciences, Università degli Studi di Milano-Bicocca, Piazza della Scienza 1, 20126, Milano, Italy
| | - Laura D'Alfonso
- Physics Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126, Milano, Italy
| | - Laura Sironi
- Physics Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126, Milano, Italy
| | - Maddalena Collini
- Physics Department, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126, Milano, Italy
- CNR Institute for Applied Science and Intelligent Systems, Via Campi Flegrei 34, 80078, Pozzuoli, Italy
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Pena AM, Decencière E, Brizion S, Sextius P, Koudoro S, Baldeweck T, Tancrède-Bohin E. In vivo melanin 3D quantification and z-epidermal distribution by multiphoton FLIM, phasor and Pseudo-FLIM analyses. Sci Rep 2022; 12:1642. [PMID: 35102172 PMCID: PMC8803839 DOI: 10.1038/s41598-021-03114-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/26/2021] [Indexed: 12/15/2022] Open
Abstract
Characterizing melanins in situ and determining their 3D z-epidermal distribution is paramount for understanding physiological/pathological processes of melanin neosynthesis, transfer, degradation or modulation with external UV exposure or cosmetic/pharmaceutical products. Multiphoton fluorescence intensity- and lifetime-based approaches have been shown to afford melanin detection, but how can one quantify melanin in vivo in 3D from multiphoton fluorescence lifetime (FLIM) data, especially since FLIM imaging requires long image acquisition times not compatible with 3D imaging in a clinical setup? We propose an approach combining (i) multiphoton FLIM, (ii) fast image acquisition times, and (iii) a melanin detection method called Pseudo-FLIM, based on slope analysis of autofluorescence intensity decays from temporally binned data. We compare Pseudo-FLIM to FLIM bi-exponential and phasor analyses of synthetic melanin, melanocytes/keratinocytes coculture and in vivo human skin. Using parameters of global 3D epidermal melanin density and z-epidermal distribution profile, we provide first insights into the in vivo knowledge of 3D melanin modulations with constitutive pigmentation versus ethnicity, with seasonality over 1 year and with topical application of retinoic acid or retinol on human skin. Applications of Pseudo-FLIM based melanin detection encompass physiological, pathological, or environmental factors-induced pigmentation modulations up to whitening, anti-photoaging, or photoprotection products evaluation.
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Affiliation(s)
- Ana-Maria Pena
- 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
| | - Peggy Sextius
- L'Oréal Research and Innovation, 1 Avenue Eugène Schueller, BP22, 93601, Aulnay-sous-Bois, France
| | - Serge Koudoro
- MINES ParisTech - PSL Research University, Fontainebleau, France
| | - Thérèse Baldeweck
- 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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12
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Chen IL, Wang YJ, Chang CC, Wu YH, Lu CW, Shen JW, Huang L, Lin BS, Chiang HM. Computer-Aided Detection (CADe) System with Optical Coherent Tomography for Melanin Morphology Quantification in Melasma Patients. Diagnostics (Basel) 2021; 11:1498. [PMID: 34441432 PMCID: PMC8391880 DOI: 10.3390/diagnostics11081498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 02/05/2023] Open
Abstract
Dark skin-type individuals have a greater tendency to have pigmentary disorders, among which melasma is especially refractory to treat and often recurs. Objective measurement of melanin amount helps evaluate the treatment response of pigmentary disorders. However, naked-eye evaluation is subjective to weariness and bias. We used a cellular resolution full-field optical coherence tomography (FF-OCT) to assess melanin features of melasma lesions and perilesional skin on the cheeks of eight Asian patients. A computer-aided detection (CADe) system is proposed to mark and quantify melanin. This system combines spatial compounding-based denoising convolutional neural networks (SC-DnCNN), and through image processing techniques, various types of melanin features, including area, distribution, intensity, and shape, can be extracted. Through evaluations of the image differences between the lesion and perilesional skin, a distribution-based feature of confetti melanin without layering, two distribution-based features of confetti melanin in stratum spinosum, and a distribution-based feature of grain melanin at the dermal-epidermal junction, statistically significant findings were achieved (p-values = 0.0402, 0.0032, 0.0312, and 0.0426, respectively). FF-OCT enables the real-time observation of melanin features, and the CADe system with SC-DnCNN was a precise and objective tool with which to interpret the area, distribution, intensity, and shape of melanin on FF-OCT images.
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Affiliation(s)
- I-Ling Chen
- Apollo Medical Optics, Ltd., Taipei City 11491, Taiwan; (I.-L.C.); (C.-W.L.); (L.H.)
| | - Yen-Jen Wang
- Department of Dermatology, MacKay Memorial Hospital, Taipei City 10449, Taiwan; (Y.-J.W.); (Y.-H.W.)
- Department of Cosmetic Applications and Management, MacKay Junior College of Medicine, Nursing, and Management, New Taipei City 25245, Taiwan
| | - Chang-Cheng Chang
- Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan;
- Department of Cosmeceutics, China Medical University, Taichung 40433, Taiwan; (J.-W.S.); (H.-M.C.)
- School of Medicine, College of Medicine, China Medical University, China Medical University Hospital, Taichung 404332, Taiwan
- Aesthetic Medical Center, China Medical University Hospital, Taichung 40402, Taiwan
| | - Yu-Hung Wu
- Department of Dermatology, MacKay Memorial Hospital, Taipei City 10449, Taiwan; (Y.-J.W.); (Y.-H.W.)
- Department of Medicine, Mackay Medical College, New Taipei City 25245, Taiwan
| | - Chih-Wei Lu
- Apollo Medical Optics, Ltd., Taipei City 11491, Taiwan; (I.-L.C.); (C.-W.L.); (L.H.)
| | - Jia-Wei Shen
- Department of Cosmeceutics, China Medical University, Taichung 40433, Taiwan; (J.-W.S.); (H.-M.C.)
| | - Ling Huang
- Apollo Medical Optics, Ltd., Taipei City 11491, Taiwan; (I.-L.C.); (C.-W.L.); (L.H.)
| | - Bor-Shyh Lin
- Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan;
| | - Hsiu-Mei Chiang
- Department of Cosmeceutics, China Medical University, Taichung 40433, Taiwan; (J.-W.S.); (H.-M.C.)
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13
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Meng X, Chen J, Zhang Z, Li K, Li J, Yu Z, Zhang Y. Non-invasive optical methods for melanoma diagnosis. Photodiagnosis Photodyn Ther 2021; 34:102266. [PMID: 33785441 DOI: 10.1016/j.pdpdt.2021.102266] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/09/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023]
Abstract
Cutaneous melanoma is one of the most common malignancies with increased incidence in the past few decades, making it a significant public health problem. The early diagnosis of melanoma is a major factor in improving patient's survival. The traditional pathway to melanoma diagnosis starts with a visual diagnosis, followed by subsequent biopsy and histopathologic evaluation. Recently, multiple innovative optical technology-based methods, including dermoscopy, reflectance confocal microscopy, optical coherence tomography, multiphoton excited fluorescence imaging and stepwise two-photon excited fluorescence (dermatofluoroscopy), have been developed to increase the diagnostic accuracy for the non-invasive melanoma diagnosis. Some of them have already been applied to real-life clinical settings, others require more research and development. These technologies show promise in facilitating the diagnosis of melanoma since they are non-invasive, sensitive, objective and easy to apply. Diagnostic accuracy, detection time, portability and the cost-effectiveness of the device are all aspects that need to be improved. This article reviews the method of these emerging optical non-invasive diagnostic technologies, their clinical application, their benefits and limitations, as well as their possible future development.
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Affiliation(s)
- Xinxian Meng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jun Chen
- Department of Dermatology and Dermatologic Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Zheng Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Ke Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Jie Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Zhixi Yu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Yixin Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China; Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai, China.
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14
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Galeb HA, Wilkinson EL, Stowell AF, Lin H, Murphy ST, Martin‐Hirsch PL, Mort RL, Taylor AM, Hardy JG. Melanins as Sustainable Resources for Advanced Biotechnological Applications. GLOBAL CHALLENGES (HOBOKEN, NJ) 2021; 5:2000102. [PMID: 33552556 PMCID: PMC7857133 DOI: 10.1002/gch2.202000102] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/04/2020] [Indexed: 05/17/2023]
Abstract
Melanins are a class of biopolymers that are widespread in nature and have diverse origins, chemical compositions, and functions. Their chemical, electrical, optical, and paramagnetic properties offer opportunities for applications in materials science, particularly for medical and technical uses. This review focuses on the application of analytical techniques to study melanins in multidisciplinary contexts with a view to their use as sustainable resources for advanced biotechnological applications, and how these may facilitate the achievement of the United Nations Sustainable Development Goals.
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Affiliation(s)
- Hanaa A. Galeb
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
- Department of ChemistryScience and Arts CollegeRabigh CampusKing Abdulaziz UniversityJeddah21577Saudi Arabia
| | - Emma L. Wilkinson
- Department of Biomedical and Life SciencesLancaster UniversityLancasterLA1 4YGUK
| | - Alison F. Stowell
- Department of Organisation, Work and TechnologyLancaster University Management SchoolLancaster UniversityLancasterLA1 4YXUK
| | - Hungyen Lin
- Department of EngineeringLancaster UniversityLancasterLA1 4YWUK
| | - Samuel T. Murphy
- Department of EngineeringLancaster UniversityLancasterLA1 4YWUK
- Materials Science InstituteLancaster UniversityLancasterLA1 4YBUK
| | - Pierre L. Martin‐Hirsch
- Lancashire Teaching Hospitals NHS TrustRoyal Preston HospitalSharoe Green LanePrestonPR2 9HTUK
| | - Richard L. Mort
- Department of Biomedical and Life SciencesLancaster UniversityLancasterLA1 4YGUK
| | - Adam M. Taylor
- Lancaster Medical SchoolLancaster UniversityLancasterLA1 4YWUK
| | - John G. Hardy
- Department of ChemistryLancaster UniversityLancasterLA1 4YBUK
- Materials Science InstituteLancaster UniversityLancasterLA1 4YBUK
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15
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Yakimov BP, Shirshin EA, Schleusener J, Allenova AS, Fadeev VV, Darvin ME. Melanin distribution from the dermal-epidermal junction to the stratum corneum: non-invasive in vivo assessment by fluorescence and Raman microspectroscopy. Sci Rep 2020; 10:14374. [PMID: 32873804 PMCID: PMC7463016 DOI: 10.1038/s41598-020-71220-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/11/2020] [Indexed: 12/11/2022] Open
Abstract
The fate of melanin in the epidermis is of great interest due to its involvement in numerous physiological and pathological processes in the skin. Melanin localization can be assessed ex vivo and in vivo using its distinctive optical properties. Melanin exhibits a characteristic Raman spectrum band shape and discernible near-infrared excited (NIR) fluorescence. However, a detailed analysis of the capabilities of depth-resolved confocal Raman and fluorescence microspectroscopy in the evaluation of melanin distribution in the human skin is lacking. Here we demonstrate how the fraction of melanin at different depths in the human skin in vivo can be estimated from its Raman spectra (bands at 1,380 and 1,570 cm-1) using several procedures including a simple ratiometric approach, spectral decomposition and non-negative matrix factorization. The depth profiles of matrix factorization components specific to melanin, collagen and natural moisturizing factor provide information about their localization in the skin. The depth profile of the collagen-related matrix factorization component allows for precise determination of the dermal-epidermal junction, i.e. the epidermal thickness. Spectral features of fluorescence background originating from melanin were found to correlate with relative intensities of the melanin Raman bands. We also hypothesized that NIR fluorescence in the skin is not originated solely from melanin, and the possible impact of oxidized species should be taken into account. The ratio of melanin-related Raman bands at 1,380 and 1,570 cm-1 could be related to melanin molecular organization. The proposed combined analysis of the Raman scattering signal and NIR fluorescence could be a useful tool for rapid non-invasive in vivo diagnostics of melanin-related processes in the human skin.
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Affiliation(s)
- B P Yakimov
- Faculty of Physics, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, Moscow, Russia, 119991
- Medical Research and Education Center, M.V. Lomonosov Moscow State University, Lomonosovsky Prospect 27/10, Moscow, Russia, 119991
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Trubetskaya 8-2, Moscow, Russia, 119991
| | - E A Shirshin
- Faculty of Physics, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, Moscow, Russia, 119991.
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Trubetskaya 8-2, Moscow, Russia, 119991.
- Institute of Spectroscopy of the Russian Academy of Sciences, Fizicheskaya Str., 5, 108840, Troitsk, Moscow, Russia.
| | - J Schleusener
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - A S Allenova
- Medical Research and Education Center, M.V. Lomonosov Moscow State University, Lomonosovsky Prospect 27/10, Moscow, Russia, 119991
- Division of Immune-Mediated Skin Diseases, Sechenov First Moscow State Medical University, Trubetskaya 8-2, Moscow, Russia, 119991
| | - V V Fadeev
- Faculty of Physics, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, Moscow, Russia, 119991
| | - M E Darvin
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany.
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16
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Cavallini C, Vitiello G, Adinolfi B, Silvestri B, Armanetti P, Manini P, Pezzella A, d’Ischia M, Luciani G, Menichetti L. Melanin and Melanin-Like Hybrid Materials in Regenerative Medicine. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1518. [PMID: 32756369 PMCID: PMC7466405 DOI: 10.3390/nano10081518] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/21/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
Abstract
Melanins are a group of dark insoluble pigments found widespread in nature. In mammals, the brown-black eumelanins and the reddish-yellow pheomelanins are the main determinants of skin, hair, and eye pigmentation and play a significant role in photoprotection as well as in many biological functions ensuring homeostasis. Due to their broad-spectrum light absorption, radical scavenging, electric conductivity, and paramagnetic behavior, eumelanins are widely studied in the biomedical field. The continuing advancements in the development of biomimetic design strategies offer novel opportunities toward specifically engineered multifunctional biomaterials for regenerative medicine. Melanin and melanin-like coatings have been shown to increase cell attachment and proliferation on different substrates and to promote and ameliorate skin, bone, and nerve defect healing in several in vivo models. Herein, the state of the art and future perspectives of melanins as promising bioinspired platforms for natural regeneration processes are highlighted and discussed.
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Affiliation(s)
- Chiara Cavallini
- Institute of Clinical Physiology, National Research Council, via Giuseppe Moruzzi 1, 56124 Pisa, Italy; (P.A.); (L.M.)
| | - Giuseppe Vitiello
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy; (G.V.); (B.S.)
| | - Barbara Adinolfi
- Institute of Applied Physics “Nello Carrara”, National Research Council, via Madonna del Piano 10, 50019 Sesto Fiorentino, FI, Italy;
| | - Brigida Silvestri
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy; (G.V.); (B.S.)
| | - Paolo Armanetti
- Institute of Clinical Physiology, National Research Council, via Giuseppe Moruzzi 1, 56124 Pisa, Italy; (P.A.); (L.M.)
| | - Paola Manini
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Napoli, Italy; (P.M.); (A.P.); (M.d.)
| | - Alessandro Pezzella
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Napoli, Italy; (P.M.); (A.P.); (M.d.)
| | - Marco d’Ischia
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Napoli, Italy; (P.M.); (A.P.); (M.d.)
| | - Giuseppina Luciani
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Napoli, Italy; (G.V.); (B.S.)
| | - Luca Menichetti
- Institute of Clinical Physiology, National Research Council, via Giuseppe Moruzzi 1, 56124 Pisa, Italy; (P.A.); (L.M.)
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17
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Zhang Y, Moy AJ, Feng X, Nguyen HTM, Sebastian KR, Reichenberg JS, Markey MK, Tunnell JW. Diffuse reflectance spectroscopy as a potential method for nonmelanoma skin cancer margin assessment. TRANSLATIONAL BIOPHOTONICS 2020. [DOI: 10.1002/tbio.202000001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Yao Zhang
- Department of Biomedical Engineering The University of Texas at Austin Austin Texas USA
| | - Austin J. Moy
- Department of Biomedical Engineering The University of Texas at Austin Austin Texas USA
| | - Xu Feng
- Department of Biomedical Engineering The University of Texas at Austin Austin Texas USA
| | - Hieu T. M. Nguyen
- Department of Biomedical Engineering The University of Texas at Austin Austin Texas USA
| | | | | | - Mia K. Markey
- Department of Biomedical Engineering The University of Texas at Austin Austin Texas USA
- Department of Imaging Physics The University of Texas MD Anderson Cancer Center Houston Texas USA
| | - James W. Tunnell
- Department of Biomedical Engineering The University of Texas at Austin Austin Texas USA
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18
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Poh AH, Mahamd Adikan FR, Moghavvemi M, Syed Omar SF, Poh K, Mahyuddin MBH, Yan G, Azizah Ariffin MA, Harun SW. Precursors to non-invasive clinical dengue screening: Multivariate signature analysis of in-vivo diffuse skin reflectance spectroscopy on febrile patients in Malaysia. PLoS One 2020; 15:e0228923. [PMID: 32236132 PMCID: PMC7112162 DOI: 10.1371/journal.pone.0228923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 01/26/2020] [Indexed: 11/18/2022] Open
Abstract
Dengue diagnostics have come a long way. Attempts at breaking away from lab-oriented dengue detection, such as NS1 antigen, IgM or IgG antibodies detection have extensively received numerous coverage. As a result, rapid detection tests (RDTs) have started to gain inroads in medical practice. Rapid detection tests notwithstanding, analysis of blood serum is still a relatively complicated task. This includes the necessity of phlebotomy, centrifugation for blood serum, and other reagent-based tests. Therefore, a non-invasive method of dengue detection was considered. In this study, we present the utility of diffuse reflectance skin spectroscopy (bandwidth of 200-2500nm) on the forearm during the triaging period for dengue screening potential. This is performed with multivariate analysis of 240 triaged febrile/suspected dengue patients. The data is then scrutinized for its clinical validity to be included as either confirmed or probable dengue, or a control group. Based on discriminant analysis of several data normalization models, we can predict the patients' clinical dengue-positivity at ranges of accuracy between ~93-98% depending on mode of the data, with a probably optimal sensitivity and specificity to the clinical diagnosis of ~89% and ~100% respectively. From the outcomes of this study, we recommend further trials with cautious optimism. With these findings, it is hoped that the elusive non-invasive detection of tropical diseases may gain platform in the near future.
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Affiliation(s)
- Abdul Halim Poh
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Integrated Lightwave Research Group, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Center of Research for Applied Electronics (CRAE), Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Faisal Rafiq Mahamd Adikan
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Integrated Lightwave Research Group, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- * E-mail:
| | - Mahmoud Moghavvemi
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Center of Research for Applied Electronics (CRAE), Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- University of Science and Culture, Tehran, Iran
| | - Sharifah Faridah Syed Omar
- Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Infectious Diseases and Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Khadijah Poh
- Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohamad Badrol Hisyam Mahyuddin
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Photonics Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | - Grace Yan
- Integrated Lightwave Research Group, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Sulaiman Wadi Harun
- Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
- Photonics Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
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19
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Di W, Clark HA. Optical Nanosensors for in vivo Physiological Chloride Detection for Monitoring Cystic Fibrosis Treatment. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:1441-1448. [PMID: 32226484 PMCID: PMC7100910 DOI: 10.1039/c9ay02717c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Personalized approaches for continuous monitoring of chloride levels are potentially valuable for evaluating the efficacy of new treatments of genetic disorders such as cystic fibrosis. In this report, we validated optode-based nanosensors for real-time chloride monitoring in the interstitial fluid of living animals. These nanosensors take advantage of a ratiometric sensing scheme which demonstrates reversible and selective chloride detection in the physiological range. We further investigate how skin pigmentation affects the sensor performance during in vivo fluorescence imaging. We successfully monitored endogenous chloride changes using nanosensors during pharmacological treatment in a cystic fibrosis mouse model. We believe this platform is a valuable tool for chloride detection which could assess the efficacy of new treatments for cystic fibrosis.
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Affiliation(s)
- Wenjun Di
- Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, United States
| | - Heather A Clark
- Department of Bioengineering, Northeastern University, Boston, Massachusetts 02115, United States
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States
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20
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Zhang Y, Moy AJ, Feng X, Nguyen HTM, Reichenberg JS, Markey MK, Tunnell JW. Physiological model using diffuse reflectance spectroscopy for nonmelanoma skin cancer diagnosis. JOURNAL OF BIOPHOTONICS 2019; 12:e201900154. [PMID: 31325232 DOI: 10.1002/jbio.201900154] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/10/2019] [Accepted: 07/17/2019] [Indexed: 05/25/2023]
Abstract
Diffuse reflectance spectroscopy (DRS) is a noninvasive, fast, and low-cost technology with potential to assist cancer diagnosis. The goal of this study was to test the capability of our physiological model, a computational Monte Carlo lookup table inverse model, for nonmelanoma skin cancer diagnosis. We applied this model on a clinical DRS dataset to extract scattering parameters, blood volume fraction, oxygen saturation and vessel radius. We found that the model was able to capture physiological information relevant to skin cancer. We used the extracted parameters to classify (basal cell carcinoma [BCC], squamous cell carcinoma [SCC]) vs actinic keratosis (AK) and (BCC, SCC, AK) vs normal. The area under the receiver operating characteristic curve achieved by the classifiers trained on the parameters extracted using the physiological model is comparable to that of classifiers trained on features extracted via Principal Component Analysis. Our findings suggest that DRS can reveal physiologic characteristics of skin and this physiologic model offers greater flexibility for diagnosing skin cancer than a pure statistical analysis. Physiological parameters extracted from diffuse reflectance spectra data for nonmelanoma skin cancer diagnosis.
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Affiliation(s)
- Yao Zhang
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Austin J Moy
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Xu Feng
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | - Hieu T M Nguyen
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
| | | | - Mia K Markey
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - James W Tunnell
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas
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21
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The rheumatoid hand in the light of fluorescence: a diagnostic technique of the future? Reumatologia 2019; 57:45-49. [PMID: 30858630 PMCID: PMC6409828 DOI: 10.5114/reum.2019.83239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/10/2019] [Indexed: 11/17/2022] Open
Abstract
Fluorescence spectroscopy is usually applied in physics, chemistry and related sciences. However, in recent years we can observe a growing interest in fluorescence spectroscopy for medical diagnostics. Currently, it is beginning to be used in the monitoring of rheumatoid arthritis (RA) activity. As the knowledge on RA increases, growing importance is being placed on the evaluation of synovitis. Today, it is difficult to imagine contemporary rheumatology without ultrasound (US) and magnetic resonance imaging (MRI). However, it turns out that these are not the only methods allowing one to visualise subclinical lesions, particularly synovitis. Fluorescence optical imaging (FOI) is also useful for the evaluation of inflammatory lesions in the joints. In the future, FOI may become competitive with "traditional" imaging studies. It is characterised by low cost, short duration and similar sensitivity to US.
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Pupinyo N, Chatatikun M, Chiabchalard A, Laiwattanapaisal W. In situ paper-based 3D cell culture for rapid screening of the anti-melanogenic activity. Analyst 2019; 144:290-298. [DOI: 10.1039/c8an01725e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Recently, paper has gained traction in the biotechnology research field due to its ability to be a substrate for 3D cell culture.
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Affiliation(s)
- Naricha Pupinyo
- Graduate Program in Clinical Biochemistry and Molecular Medicine
- Department of Clinical Chemistry
- Faculty of Allied Health Sciences
- Chulalongkorn University
- Bangkok 10330
| | - Moragot Chatatikun
- Graduate Program in Clinical Biochemistry and Molecular Medicine
- Department of Clinical Chemistry
- Faculty of Allied Health Sciences
- Chulalongkorn University
- Bangkok 10330
| | - Anchalee Chiabchalard
- Department of Clinical Chemistry
- Faculty of Allied Health Sciences
- Chulalongkorn University
- Bangkok
- Thailand
| | - Wanida Laiwattanapaisal
- Department of Clinical Chemistry
- Faculty of Allied Health Sciences
- Chulalongkorn University
- Bangkok
- Thailand
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