Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant Melanomas
It has been known for a long time that the melanin pigments present in normal skin, hair, and most of malignant melanomas can be detected by electron paramagnetic resonance (EPR) spectrometry. In this study, we used EPR imaging as a tool to map the concentration of melanin inside ex vivo human pigme...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
2013-06-01
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| Series: | Molecular Imaging |
| Online Access: | https://doi.org/10.2310/7290.2012.00037 |
| _version_ | 1797283460338941952 |
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| author | Quentin Godechal Ghanem E. Ghanem Martin G. Cook Bernard Gallez |
| author_facet | Quentin Godechal Ghanem E. Ghanem Martin G. Cook Bernard Gallez |
| author_sort | Quentin Godechal |
| collection | DOAJ |
| description | It has been known for a long time that the melanin pigments present in normal skin, hair, and most of malignant melanomas can be detected by electron paramagnetic resonance (EPR) spectrometry. In this study, we used EPR imaging as a tool to map the concentration of melanin inside ex vivo human pigmented and nonpigmented melanomas and correlated this cartography with anatomopathology. We obtained accurate mappings of the melanin inside pigmented human melanoma samples. The signal intensity observed on the EPR images correlated with the concentration of melanin within the tumors, visible on the histologic sections. In contrast, no EPR signal coming from melanin was observed from nonpigmented melanomas, therefore demonstrating the absence of EPR-detectable pigments inside these particular cases of skin cancer and the importance of pigmentation for further EPR imaging studies on melanoma. |
| first_indexed | 2024-03-07T17:31:56Z |
| format | Article |
| id | doaj.art-5909a6ddf6d8429e8dd888652da72506 |
| institution | Directory Open Access Journal |
| issn | 1536-0121 |
| language | English |
| last_indexed | 2024-03-07T17:31:56Z |
| publishDate | 2013-06-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Molecular Imaging |
| spelling | doaj.art-5909a6ddf6d8429e8dd888652da725062024-03-02T17:47:14ZengSAGE PublicationsMolecular Imaging1536-01212013-06-011210.2310/7290.2012.0003710.2310_7290.2012.00037Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant MelanomasQuentin GodechalGhanem E. GhanemMartin G. CookBernard GallezIt has been known for a long time that the melanin pigments present in normal skin, hair, and most of malignant melanomas can be detected by electron paramagnetic resonance (EPR) spectrometry. In this study, we used EPR imaging as a tool to map the concentration of melanin inside ex vivo human pigmented and nonpigmented melanomas and correlated this cartography with anatomopathology. We obtained accurate mappings of the melanin inside pigmented human melanoma samples. The signal intensity observed on the EPR images correlated with the concentration of melanin within the tumors, visible on the histologic sections. In contrast, no EPR signal coming from melanin was observed from nonpigmented melanomas, therefore demonstrating the absence of EPR-detectable pigments inside these particular cases of skin cancer and the importance of pigmentation for further EPR imaging studies on melanoma.https://doi.org/10.2310/7290.2012.00037 |
| spellingShingle | Quentin Godechal Ghanem E. Ghanem Martin G. Cook Bernard Gallez Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant Melanomas Molecular Imaging |
| title | Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant Melanomas |
| title_full | Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant Melanomas |
| title_fullStr | Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant Melanomas |
| title_full_unstemmed | Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant Melanomas |
| title_short | Electron Paramagnetic Resonance Spectrometry and Imaging in Melanomas: Comparison between Pigmented and Nonpigmented Human Malignant Melanomas |
| title_sort | electron paramagnetic resonance spectrometry and imaging in melanomas comparison between pigmented and nonpigmented human malignant melanomas |
| url | https://doi.org/10.2310/7290.2012.00037 |
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