This project seeks to understand differences in the serum vitamin D levels and immune status in cutaneous malignant melanoma patients with different UV exposure histories in New Mexico.
It is well established that ultraviolet radiation (UV) exposure is related to the development of melanoma. There is also evidence that immune reactions are altered after UV exposure in the skin (locally) and perhaps throughout the body (systemically). Additionally, while the role of vitamin D and melanoma development has not been fully established, UV-B exposure is essential for vitamin D production in the skin. Increased sun exposure is also related to the presence of solar elastosis, which might protect (1) or improve survival from melanoma. Thus, melanoma represents a unique model for studying UV exposure, the immune system, and vitamin D. Malignant melanoma is an antigenic cancer; therefore, the role of UV exposure-induced immunosuppression and vitamin D production in the recognition, destruction and growth inhibition of cancerous melanocytes is worth further study. To underscore the importance of this project, the Scientific Advisory Committee of the Melanoma Research Foundation and the Steering Committee of the Society of Melanoma Research have indicated a need to collect more human data on the host immune response mechanisms in melanoma and also to focus on the skin as a whole microenvironment, moving away from only in vitro experiments.
Study Type
OBSERVATIONAL
Enrollment
100
Lovelace Women's Hospial
Albuquerque, New Mexico, United States
University of New Mexico
Albuquerque, New Mexico, United States
• Evaluate serum 25(OH)-vitamin D concentrations. • Detect the presence of solar elastosis and local immunosuppression in skin biopsy samples • Assess the role of the systemic humoral immune response
Time frame: 1 year
• Evaluate cellular immunological changes of peripheral lymphocyte subpopulations • Sequence chromosome 6 from blood DNA samples of the patients
Time frame: 1 year
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