Assay of catechol O-methyltransferase by determination of the m-and p-O-methylated products using high-performance liquid chromatography.
Explore the source record for details and available documents.
Animals↗
Biomedical subjects
G M Van Kempen
Publications and source records attributed to G M Van Kempen.
PH-dependent behavior of erythrocyte membrane elevations. II Occurrence in moderate acidemic and alkalemic conditions.
Changes of the number of red cell membrane elevations revealed by freeze-etch electron microscopy are pH-dependent in vitro and in vivo. In healthy volunteers a decrease of the number of red cell surfaces with elevations was observed under moderate acidemic and alkalemic conditions. These changes were different in patients with Huntington's chorea and affective psychotic disorders. Elevations of the red cell membrane with the same diameter can be demonstrated in ultrathin sections, if sodium azide is added during the fixation procedure.
Erythrocyte Membrane↗
pH-dependent behaviour of erythrocyte membrane elevations.
Freeze-etch electron microscopy of human erythrocytes from heparinized normal blood reveals membrane elevations. These elevations disappear at low pH values and reappear under normal pH conditions in vitro, both in the absence and the presence of plasma. This pH-dependent behaviour is discussed as an intrinsic membrane event.
Anticoagulants↗
Anomalous effect of probenecid on rat brain phenolsulphotransferase.
Explore the source record for details and available documents.
Animals↗
Inhibition of rat brain phenol sulphotransferase in vitro by noradrenaline and dopamine metabolites.
Explore the source record for details and available documents.
3,4-Dihydroxyphenylacetic Acid↗