title: Simple screening methods for hypoxanthine-guanine phosphoribosyltransferase and adenine phosphoribosyltransferase deficiencies using dried blood spots on filter paper.
abstract: Simple methods for the detection of hypoxanthine-guanine phosphoribosyltransferase and/or adenine phosphoribosyltransferase deficiencies using dried filter paper blood spots were studied. Enzyme activities in the eluate from dried filter paper blood spots stored for 4 weeks at room conditions were shown to be quite stable. Autoradiographs prepared from dried filter paper blood spots and DE-81 papers soaked with enzyme reaction mixtures containing 14C-hypoxanthine and/or 14C-adenine showed sharp radioactive spots in normal subjects. No activity was evident in the cases of the Lesch-Nyhan syndrome and/or adenine phosphoribosyltransferase deficiency. The methods seem to be suitable for screening.
mesh_terms: D000228:Adenine Phosphoribosyltransferase / Q000097:blood / Q000172:deficiency*; D001345:Autoradiography; D004912:Erythrocytes / Q000201:enzymology; D006801:Humans; D007041:Hypoxanthine Phosphoribosyltransferase / Q000097:blood / Q000172:deficiency*; D007926:Lesch-Nyhan Syndrome / Q000201:enzymology; D010430:Pentosyltransferases / Q000172:deficiency*
chemical_list: D010430:Pentosyltransferases; D000228:Adenine Phosphoribosyltransferase; D007041:Hypoxanthine Phosphoribosyltransferase