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[Studies on normal and pathological human cartilage proteoglycans with metrizamide density gradient ultracentrifugation]. 1985

T Matsumoto

In order to study human articular cartilage proteoglycans (PG) in aging and pathological states, PG extracts of normal cartilage, osteoarthritic cartilage, chondrosarcoma and osteochondroma were subjected to the density gradient ultracentrifugation in 23% metrizamide-6M urea system. Normal cartilages have chondroitin sulfate rich PG and keratan sulfate rich PG. The latter has a higher buoyant density and increases markedly with aging, but is missing in all of the pathological cartilages tested which have juvenile profiles corresponding to the normal cartilage of a child under 10 years of age. No differences in the chain lengths of glycosaminoglycans were observed in any of the cartilages tested, but marked differences were observed in the aggregation PG and hyaluronate in the pathological cartilages. The molecular sizes of hyaluronate are probably small in normal adults but large in the pathological state. Determinations of hexose and uronate distribution in the density gradient characterize easily the differences in aging and pathological cartilages. This system provided more information than the CsCl-guanidine HCl system.

UI MeSH Term Description Entries
D007632 Keratan Sulfate A sulfated mucopolysaccharide initially isolated from bovine cornea. At least two types are known. Type I, found mostly in the cornea, contains D-galactose and D-glucosamine-6-O-sulfate as the repeating unit; type II, found in skeletal tissues, contains D-galactose and D-galactosamine-6-O-sulfate as the repeating unit. Keratosulfate,Sulfate, Keratan
D008793 Metrizamide A solute for density gradient centrifugation offering higher maximum solution density without the problems of increased viscosity. It is also used as a resorbable, non-ionic contrast medium. Amipak,Amipaque
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011509 Proteoglycans Glycoproteins which have a very high polysaccharide content. Proteoglycan,Proteoglycan Type H
D002356 Cartilage A non-vascular form of connective tissue composed of CHONDROCYTES embedded in a matrix that includes CHONDROITIN SULFATE and various types of FIBRILLAR COLLAGEN. There are three major types: HYALINE CARTILAGE; FIBROCARTILAGE; and ELASTIC CARTILAGE. Cartilages
D002357 Cartilage Diseases Pathological processes involving the chondral tissue (CARTILAGE). Chondromalacia,Cartilage Disease,Chondromalacias
D002809 Chondroitin Sulfates Derivatives of chondroitin which have a sulfate moiety esterified to the galactosamine moiety of chondroitin. Chondroitin sulfate A, or chondroitin 4-sulfate, and chondroitin sulfate C, or chondroitin 6-sulfate, have the sulfate esterified in the 4- and 6-positions, respectively. Chondroitin sulfate B (beta heparin; DERMATAN SULFATE) is a misnomer and this compound is not a true chondroitin sulfate. Chondroitin 4-Sulfate,Chondroitin 6-Sulfate,Chondroitin Sulfate A,Chondroitin Sulfate C,Blutal,Chondroitin 4-Sulfate, Aluminum Salt,Chondroitin 4-Sulfate, Potassium Salt,Chondroitin 6-Sulfate, Potassium Salt,Chondroitin 6-Sulfate, Sodium Salt,Chondroitin Sulfate,Chondroitin Sulfate 4-Sulfate, Sodium Salt,Chondroitin Sulfate, Calcium Salt,Chondroitin Sulfate, Iron (+3) Salt,Chondroitin Sulfate, Iron Salt,Chondroitin Sulfate, Potassium Salt,Chondroitin Sulfate, Sodium Salt,Chondroitin Sulfate, Zinc Salt,Chonsurid,Sodium Chondroitin Sulfate,Translagen,Chondroitin 4 Sulfate,Chondroitin 4 Sulfate, Aluminum Salt,Chondroitin 4 Sulfate, Potassium Salt,Chondroitin 6 Sulfate,Chondroitin 6 Sulfate, Potassium Salt,Chondroitin 6 Sulfate, Sodium Salt,Chondroitin Sulfate 4 Sulfate, Sodium Salt,Chondroitin Sulfate, Sodium,Sulfate, Chondroitin,Sulfate, Sodium Chondroitin,Sulfates, Chondroitin
D006601 Hexoses MONOSACCHARIDES whose molecules contain six carbon atoms, such as GLUCOSE and FRUCTOSE. They generally have the chemical formula C6H12O6. Hexose
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths

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