Abstract
We analyzed the main disaccharide units of glycosaminoglycans synthesized by cardiac myxoma cells in vivo and in cell culture using high-performance liquid chromatography after 1-phenyl-3-methyl-5-pyrasolone labeling. Cardiac myxoma tissues contained large amounts of chondroitin-6-sulfate (46%) and hyaluronic acid (32%), along with some chondroitin-4-sulfate (13%), chondroitin (6%), and much less dermatan sulfate (3%). Cultured cardiac myxoma cells synthesized mainly chondroitin-6-sulfate. The abundant glycosaminoglycans in myxoma tissues may make up the characteristic friable gelatinous matrix which is favorable for embolism and tumor cell growth.
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