Biomaterial Database

The correction of Hunter fibroblasts by exogenous iduronate sulfate sulfatase: biochemical and ultrastructural studies. 1981

R Eliahu, and E Sekeles, and R Cohen, and G Bach

The exogenous addition of iduronate sulfate sulfatase to cultured fibroblasts of Hunter patients resulted in a full correction of the metabolic defect as demonstrated by chemical and ultrastructural analyses. As little as 25% of the normal fibroblasts' enzyme levels were sufficient for this correction. The half-disappearance time of the internalized enzyme was 3-4 days. Prolonged incubation of corrected cells resulted in a gradual reaccumulation of mucopolysaccharides.

UI	MeSH Term	Description	Entries
D007066	Iduronate Sulfatase	An enzyme that specifically cleaves the ester sulfate of iduronic acid. Its deficiency has been demonstrated in Hunter's syndrome, which is characterized by an excess of dermatan sulfate and heparan sulfate. EC 3.1.6.13.	Hunter Corrective Factor,Iduronatesulfate Sulfohydrolase,Sulfoiduronate Sulfatase,Iduronate Sulfate Sulfatase,Corrective Factor, Hunter,Factor, Hunter Corrective,Sulfatase, Iduronate,Sulfatase, Iduronate Sulfate,Sulfatase, Sulfoiduronate,Sulfate Sulfatase, Iduronate,Sulfohydrolase, Iduronatesulfate
D008854	Microscopy, Electron	Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.	Electron Microscopy
D002478	Cells, Cultured	Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.	Cultured Cells,Cell, Cultured,Cultured Cell
D005347	Fibroblasts	Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.	Fibroblast
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013429	Sulfatases	A class of enzymes that catalyze the hydrolysis of sulfate ESTERS.	Sulfatase
D016532	Mucopolysaccharidosis II	Systemic lysosomal storage disease marked by progressive physical deterioration and caused by a deficiency of L-sulfoiduronate sulfatase. This disease differs from MUCOPOLYSACCHARIDOSIS I by slower progression, lack of corneal clouding, and X-linked rather than autosomal recessive inheritance. The mild form produces near-normal intelligence and life span. The severe form usually causes death by age 15.	Gargoylism, Hunter Syndrome,Hunter's Syndrome,Iduronate 2-Sulfatase Deficiency,Iduronate Sulfatase Deficiency,Sulfoiduronate Sulfatase Deficiency,Hunter Syndrome,Hunter Syndrome Gargoylism,I2S Deficiency,Mucopolysaccharidosis 2,Mucopolysaccharidosis Type 2,Mucopolysaccharidosis Type II,Deficiency, I2S,Deficiency, Iduronate 2-Sulfatase,Deficiency, Iduronate Sulfatase,Deficiency, Sulfoiduronate Sulfatase,Hunters Syndrome,Iduronate 2 Sulfatase Deficiency,Syndrome, Hunter,Syndrome, Hunter's
D066298	In Vitro Techniques	Methods to study reactions or processes taking place in an artificial environment outside the living organism.	In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In