Biomaterial Database

Elevated nucleotide pyrophosphatase activity in cultured skin fibroblasts from patients with Lowe's syndrome. 1988

K Horie, and T Yano, and I Funakoshi, and I Yamashina

Department of Biological Chemistry, Faculty of Pharmaceutical Sciences, Kyoto University, Japan.

In previous papers we reported that nucleotide pyrophosphatase (NPPase) activities are markedly elevated in skin fibroblasts from patients with Lowe's syndrome. To reveal the molecular basis for this elevation, we investigated to see whether or not the activities are proportional to the amounts of enzyme protein. Determination of the amounts of NPPase proteins by a radioimmunoassay using monoclonal antibodies revealed that the amounts of NPPase proteins were proportional to the enzyme activities. The NPPase proteins from patients' and normal cells were indistinguishable, after SDS-polyacrylamide gel electrophoresis, on Western blot analysis with staining with polyclonal antibodies raised against denatured NPPase. These data suggested that the elevated NPPase activities in fibroblasts in this disorder resulted from increased amounts of the enzyme proteins.

UI	MeSH Term	Description	Entries
D009800	Oculocerebrorenal Syndrome	A sex-linked recessive disorder affecting multiple systems including the EYE, the NERVOUS SYSTEM, and the KIDNEY. Clinical features include congenital CATARACT; MENTAL RETARDATION; and renal tubular dysfunction (FANCONI SYNDROME; RENAL TUBULAR ACIDOSIS; X-LINKED HYPOPHOSPHATEMIA or vitamin-D-resistant rickets) and SCOLIOSIS. This condition is due to a deficiency of phosphatidylinositol 4,5-bisphosphate-5-phosphatase leading to defects in PHOSPHATIDYLINOSITOL metabolism and INOSITOL signaling pathway. (from Menkes, Textbook of Child Neurology, 5th ed, p60; Am J Hum Genet 1997 Jun;60(6):1384-8)	Cerebrooculorenal Syndrome,Lowe Syndrome,Cerebro-Oculo-Renal Syndrome,Lowe Disease,Lowe Oculocerebrorenal Syndrome,Lowe-Bickel Syndrome,Lowe-Terrey-MacLachlan Syndrome,Oculocerebrorenal Dystrophy,Oculocerebrorenal Syndrome of Lowe,Phosphatidylinositol 4,5-Bisphosphate 5-Phosphatase Deficiency,Phosphatidylinositol-4,5-Bisphosphate-5-Phosphatase Deficiency,Renal-Oculocerebrodystrophy,Cerebro Oculo Renal Syndrome,Deficiency, Phosphatidylinositol-4,5-Bisphosphate-5-Phosphatase,Dystrophy, Oculocerebrorenal,Lowe Bickel Syndrome,Lowe Terrey MacLachlan Syndrome,Phosphatidylinositol 4,5 Bisphosphate 5 Phosphatase Deficiency,Renal Oculocerebrodystrophy
D011755	Pyrophosphatases	A group of enzymes within the class EC 3.6.1.- that catalyze the hydrolysis of diphosphate bonds, chiefly in nucleoside di- and triphosphates. They may liberate either a mono- or diphosphate. EC 3.6.1.-.	Pyrophosphatase
D011863	Radioimmunoassay	Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indirectly to measure the binding of the unlabeled substance to a specific antibody or other receptor system. Non-immunogenic substances (e.g., haptens) can be measured if coupled to larger carrier proteins (e.g., bovine gamma-globulin or human serum albumin) capable of inducing antibody formation.	Radioimmunoassays
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
D004591	Electrophoresis, Polyacrylamide Gel	Electrophoresis in which a polyacrylamide gel is used as the diffusion medium.	Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
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
D000911	Antibodies, Monoclonal	Antibodies produced by a single clone of cells.	Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D012867	Skin	The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.
D015153	Blotting, Western	Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes.	Immunoblotting, Western,Western Blotting,Western Immunoblotting,Blot, Western,Immunoblot, Western,Western Blot,Western Immunoblot,Blots, Western,Blottings, Western,Immunoblots, Western,Immunoblottings, Western,Western Blots,Western Blottings,Western Immunoblots,Western Immunoblottings