Abstract
The in vitro synthesis of HA in synovial fibroblasts derived from normal and rheumatoid joints was investigated. Incubation of these cells with ArteparonR and a variety of sulphated dextrans showed that macromolecular HA synthesis could be modified by these drugs. ArteparonR and a dextran sulphate (DS1) of molecular weight 20,600 and 0.8 sulphate substitution stimulated HA synthesis in rheumatoid cells by approximately 150%. In contrast the dextrans with higher sulphate substitution but similar molecular weight were less effective. Gel filtration chromatography of media from drug-treated cells showed an increase in HA hydrodynamic size.
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