Effects of some drugs on human erythrocyte 6-phosphogluconate dehydrogenase: an in vitro study.
Article Details
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Akkemik E, Budak H, Ciftci M
Effects of some drugs on human erythrocyte 6-phosphogluconate dehydrogenase: an in vitro study.
J Enzyme Inhib Med Chem. 2010 Aug;25(4):476-9. doi: 10.3109/14756360903257900.
- PubMed ID
- 20235752 [ View in PubMed]
- Abstract
The inhibitory effects of some drugs on 6-phosphogluconate dehydrogenase from human erythrocytes have been investigated. For this purpose, initially, erythrocyte 6-phosphogluconate dehydrogenase was purified 3364 times in a yield of 58% by using ammonium sulfate precipitation and 2',5'-ADP Sepharose 4B affinity gel. A temperature of +4 degrees C was maintained during the purification process. Enzyme activity was determined with the Beutler method by using a spectrophotometer at 340 nm. This method was utilized for all kinetic studies. Many commonly used drugs were investigated in this study. Some drugs (ketotifen (K(i): 8.3 +/- 1.7 microM), dacarbazine (K(i): 10.1 +/- 0.7 microM), meloxicam (K(i): 50.9 +/- 13.2 microM), furosemide (K(i): 127 +/- 37.8 microM), methotrexate (K(i): 136.7 +/- 25.3 microM), metochloropramide hydrochloride (K(i): 2.1113 +/- 0.6979 mM), ritodrine hydrochloride (K(i): 6.0353 +/- 1.2783 mM), and gadopentetic acid (K(i): 73.4 +/- 21.9 mM)) inhibited enzyme activity in vitro. K(i) constants for the enzyme were found by means of Lineweaver-Burk graphs. All drugs showed non-competitive inhibition. In addition, IC(50) values of the drugs were determined by plotting activity percent vs [I].
DrugBank Data that Cites this Article
- Drug Targets
Drug Target Kind Organism Pharmacological Action Actions Dacarbazine 6-phosphogluconate dehydrogenase, decarboxylating Protein Humans UnknownInhibitorDetails Gadopentetic acid 6-phosphogluconate dehydrogenase, decarboxylating Protein Humans UnknownInhibitorDetails Ketotifen 6-phosphogluconate dehydrogenase, decarboxylating Protein Humans UnknownInhibitorDetails - Drug Enzymes
Drug Enzyme Kind Organism Pharmacological Action Actions Furosemide 6-phosphogluconate dehydrogenase, decarboxylating Protein Humans UnknownInhibitorDetails Meloxicam 6-phosphogluconate dehydrogenase, decarboxylating Protein Humans UnknownInhibitorDetails Methotrexate 6-phosphogluconate dehydrogenase, decarboxylating Protein Humans UnknownInhibitorDetails Ritodrine 6-phosphogluconate dehydrogenase, decarboxylating Protein Humans UnknownInhibitorDetails