Summary
A patient is described with typical skin lesions of lichen myxedematosus and IgG-type lambda paraproteinemia. Fibroblasts cultured from the skin of the patient and from the skin of control persons were used to study glycosaminoglycan and collagen synthesis; the cultures were labelled with 3H-glucosamine and 3H-proline, respectively. Fibroblasts from the patient grew to a cell density which was lower than that of the control fibroblasts. The production of glycosaminoglycans was increased in lichen myxedematosus cultures, so that the ratio of hyaluronic acid to sulphated glucosaminoglycans was higher in the patient's cultures than in control cultures. Collagen production in the patient's cultures was about half of that in control cultures, whereas the ratio of type III to type I collagen was normal.
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Turakainen, H., Välimäki, M. & Penttinen, R. Synthesis of glycosaminoglycans and collagen in skin fibroblasts cultured from a patient with lichen myxedematosus. Arch Dermatol Res 277, 55–59 (1984). https://doi.org/10.1007/BF00406481
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DOI: https://doi.org/10.1007/BF00406481