RT Journal Article SR Electronic T1 High molecular weight glycosaminoglycans in AA type amyloid fibril extracts from human liver. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 562 OP 566 DO 10.1136/ard.50.8.562 VO 50 IS 8 A1 Magnus, J H A1 Kolset, S O A1 Husby, G YR 1991 UL http://ard.bmj.com/content/50/8/562.abstract AB Glycosaminoglycans have previously been identified in extracts of AA type hepatic amyloid fibril from a patient with amyloidosis associated with juvenile rheumatoid arthritis. The macromolecular properties of these polysaccharides are described here in more detail. By gel filtration and ion exchange chromatography glycosaminoglycans in the form of high molecular weight free chains were shown to coisolate with water extracted amyloid fibrils. About 60% of these were characterised as galactosamines (chondroitin sulphate/dermatan sulphate), whereas the remaining 40% consisted of N-sulphated glucosamines (heparin/heparan sulphate). The amyloid associated glycosaminoglycans were not part of intact proteoglycans in the fibril extracts.