Abstract
Abstract Analysis of the low frequency region of Raman spectra enables determination of water structure. It has been previously demonstrated by various techniques that water content and possibly also the water structure is altered in some malignant tumours. To further elucidate possible change in water structure in tumours we performed NIR FT Raman spectroscopy on biopsies from selected benign and malignant skin tumours (benign: seborrheic keratosis, pigmented nevi; malignant: malignant melanoma, basal cell carcinoma). We did not observe any differences in water content between malignant and benign skin tumours with an exception of seborrheic keratosis, in which the water content was decreased. Increase in the tetrahedral (free) water was found in malignant skin tumours and sun-damaged skin relative to normal young skin and benign skin tumours. This finding may add to the understanding of molecular alterations in cancer.
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