Biomaterial Database

An ultramicrochemical test for mycoplasmal contamination of cultured cells. 1979

M P Uitendaal, and C H DeBruyn, and M Hatanaka, and P Hösli

A sensitive ultramicrochemical enzyme test for mycoplasmal contamination of cultured cells, based on the determination of the activity of adenosine phosphorylase, is described. The test was performed by assaying the enzymatic conversion of [8-14C]adenine and ribose-1-phosphate to [8-14C]adenosine by incubating a plastic leaflet carrying a counted number of cells (1 to 10). These leaflets were isolated from the bottom of the same plastic film dish in which the cells were cultured for experimental or diagnostic purposes, e.g. prenatal diagnosis or inborn errors of metabolism. The present test should be several 1000-fold more sensitive than the originally reported enzymatic method because (a) the adenosine-phosphorylase reaction is measured in the nucleoside forming direction which is by far the most active; and (b) the assay is performed with the cells and not with the culture medium. The latter is of special importance for the detection of those low-grade contamination in which most of the mycoplasma particles are attached to cell membranes.

UI	MeSH Term	Description	Entries
D007041	Hypoxanthine Phosphoribosyltransferase	An enzyme that catalyzes the conversion of 5-phosphoribosyl-1-pyrophosphate and hypoxanthine, guanine, or MERCAPTOPURINE to the corresponding 5'-mononucleotides and pyrophosphate. The enzyme is important in purine biosynthesis as well as central nervous system functions. Complete lack of enzyme activity is associated with the LESCH-NYHAN SYNDROME, while partial deficiency results in overproduction of uric acid. EC 2.4.2.8.	Guanine Phosphoribosyltransferase,HPRT,Hypoxanthine-Guanine Phosphoribosyltransferase,IMP Pyrophosphorylase,HGPRT,HPRTase,Hypoxanthine Guanine Phosphoribosyltransferase,Phosphoribosyltransferase, Guanine,Phosphoribosyltransferase, Hypoxanthine,Phosphoribosyltransferase, Hypoxanthine-Guanine,Pyrophosphorylase, IMP
D007926	Lesch-Nyhan Syndrome	An inherited disorder transmitted as a sex-linked trait and caused by a deficiency of an enzyme of purine metabolism; HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE. Affected individuals are normal in the first year of life and then develop psychomotor retardation, extrapyramidal movement disorders, progressive spasticity, and seizures. Self-destructive behaviors such as biting of fingers and lips are seen frequently. Intellectual impairment may also occur but is typically not severe. Elevation of uric acid in the serum leads to the development of renal calculi and gouty arthritis. (Menkes, Textbook of Child Neurology, 5th ed, pp127)	Choreoathetosis Self-Mutilation Hyperuricemia Syndrome,Hypoxanthine-Phosphoribosyl-Transferase Deficiency Disease,Choreoathetosis Self-Mutilation Syndrome,Complete HGPRT Deficiency Disease,Complete HPRT Deficiency,Complete Hypoxanthine-Guanine Phosphoribosyltransferase Deficiency,Deficiency Disease, Complete HGPRT,Deficiency Disease, Hypoxanthine-Phosphoribosyl-Transferase,Deficiency of Guanine Phosphoribosyltransferase,Deficiency of Hypoxanthine Phosphoribosyltransferase,HGPRT Deficiency,HGPRT Deficiency Disease, Complete,Hypoxanthine Guanine Phosphoribosyltransferase 1 Deficiency,Hypoxanthine Guanine Phosphoribosyltransferase Deficiency,Hypoxanthine Phosphoribosyltransferase Deficiency,Juvenile Gout, Choreoathetosis, Mental Retardation Syndrome,Juvenile Hyperuricemia Syndrome,Lesch-Nyhan Disease,Primary Hyperuricemia Syndrome,Total HPRT Deficiency,Total Hypoxanthine-Guanine Phosphoribosyl Transferase Deficiency,X-Linked Hyperuricemia,X-Linked Primary Hyperuricemia,Choreoathetosis Self Mutilation Hyperuricemia Syndrome,Choreoathetosis Self Mutilation Syndrome,Choreoathetosis Self-Mutilation Syndromes,Complete HPRT Deficiencies,Complete Hypoxanthine Guanine Phosphoribosyltransferase Deficiency,Deficiencies, Complete HPRT,Deficiencies, HGPRT,Deficiencies, Hypoxanthine Phosphoribosyltransferase,Deficiencies, Total HPRT,Deficiency Disease, Hypoxanthine Phosphoribosyl Transferase,Deficiency Diseases, Hypoxanthine-Phosphoribosyl-Transferase,Deficiency, Complete HPRT,Deficiency, HGPRT,Deficiency, Hypoxanthine Phosphoribosyltransferase,Deficiency, Total HPRT,Guanine Phosphoribosyltransferase Deficiencies,Guanine Phosphoribosyltransferase Deficiency,HGPRT Deficiencies,HPRT Deficiencies, Complete,HPRT Deficiencies, Total,HPRT Deficiency, Complete,HPRT Deficiency, Total,Hyperuricemia Syndrome, Juvenile,Hyperuricemia Syndrome, Primary,Hyperuricemia Syndromes, Juvenile,Hyperuricemia Syndromes, Primary,Hyperuricemia, X-Linked,Hyperuricemia, X-Linked Primary,Hyperuricemias, X-Linked,Hyperuricemias, X-Linked Primary,Hypoxanthine Phosphoribosyl Transferase Deficiency Disease,Hypoxanthine Phosphoribosyltransferase Deficiencies,Hypoxanthine-Phosphoribosyl-Transferase Deficiency Diseases,Juvenile Hyperuricemia Syndromes,Lesch Nyhan Disease,Lesch Nyhan Syndrome,Phosphoribosyltransferase Deficiencies, Guanine,Phosphoribosyltransferase Deficiencies, Hypoxanthine,Phosphoribosyltransferase Deficiency, Guanine,Phosphoribosyltransferase Deficiency, Hypoxanthine,Primary Hyperuricemia Syndromes,Primary Hyperuricemia, X-Linked,Primary Hyperuricemias, X-Linked,Self-Mutilation Syndrome, Choreoathetosis,Self-Mutilation Syndromes, Choreoathetosis,Syndrome, Choreoathetosis Self-Mutilation,Syndrome, Juvenile Hyperuricemia,Syndrome, Primary Hyperuricemia,Syndromes, Choreoathetosis Self-Mutilation,Syndromes, Juvenile Hyperuricemia,Syndromes, Primary Hyperuricemia,Total HPRT Deficiencies,Total Hypoxanthine Guanine Phosphoribosyl Transferase Deficiency,X Linked Hyperuricemia,X Linked Primary Hyperuricemia,X-Linked Hyperuricemias,X-Linked Primary Hyperuricemias
D008722	Methods	A series of steps taken in order to conduct research.	Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique
D009174	Mycoplasma	A genus of gram-negative, mostly facultatively anaerobic bacteria in the family MYCOPLASMATACEAE. The cells are bounded by a PLASMA MEMBRANE and lack a true CELL WALL. Its organisms are pathogens found on the MUCOUS MEMBRANES of humans, ANIMALS, and BIRDS.	Eperythrozoon,Haemobartonella,Mycoplasma putrefaciens,PPLO,Pleuropneumonia-Like Organisms,Pleuropneumonia Like Organisms
D011683	Purine-Nucleoside Phosphorylase	An enzyme that catalyzes the reaction between a purine nucleoside and orthophosphate to form a free purine plus ribose-5-phosphate. EC 2.4.2.1.	Inosine Phosphorylase,Nicotinamide Riboside Phosphorylase,Purine Nucleoside Phosphorylases,Nucleoside Phosphorylases, Purine,Phosphorylase, Inosine,Phosphorylase, Nicotinamide Riboside,Phosphorylase, Purine-Nucleoside,Phosphorylases, Purine Nucleoside,Purine Nucleoside Phosphorylase,Riboside Phosphorylase, Nicotinamide
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, Cell
D005347	Fibroblasts	Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.	Fibroblast
D006073	Gout	Metabolic disorder characterized by recurrent acute arthritis, hyperuricemia and deposition of sodium urate in and around the joints, sometimes with formation of URIC ACID calculi.	Gouts
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012867	Skin	The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.