Biomaterial Database

Effects of some drugs on human erythrocyte glucose 6-phosphate dehydrogenase: an in vitro study. 2010

Ebru Akkemik, and Harun Budak, and Mehmet Ciftci

Ataturk University, Science Faculty, Department of Chemistry, Erzurum, Turkey.

Inhibitory effects of some drugs on glucose 6-phosphate dehydrogenase from the erythrocytes of human have been investigated. For this purpose, at the beginning, erythrocyte glucose 6-phosphate dehydrogenase was purified 2256 times in a yield of 44.22% by using ammonium sulphate precipitation and 2', 5'-ADP Sepharose 4B affinity gel. Temperature of +4°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. Ketotifen, dacarbazine, thiocolchicoside, meloxicam, methotrexate, furosemide, olanzapine, methylprednizolone acetate, paricalcitol, ritodrine hydrochloride, and gadobenate-dimeglumine were used as drugs. All the drugs indicated the inhibitory effects on the enzyme. Ki constants for glucose 6-phosphate dehydrogenase were found by means of Lineweaver-Burk graphs. While methylprednizolone acetate showed competitive inhibition, the others displayed non-competitive inhibition. In addition, IC(50) values of the drugs were determined by plotting Activity% vs [I].

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008297	Male		Males
D010427	Pentose Phosphate Pathway	An oxidative decarboxylation process that converts GLUCOSE-6-PHOSPHATE to D-ribose-5-phosphate via 6-phosphogluconate. The pentose product is used in the biosynthesis of NUCLEIC ACIDS. The generated energy is stored in the form of NADPH. This pathway is prominent in tissues which are active in the synthesis of FATTY ACIDS and STEROIDS.	Hexose Monophosphate Shunt,Pentose Phosphate Shunt,Pentose Shunt,Pentosephosphate Pathway,Pentose-Phosphate Pathway,Pentosephosphate Shunt,Hexose Monophosphate Shunts,Pathway, Pentose Phosphate,Pathway, Pentose-Phosphate,Pathway, Pentosephosphate,Pathways, Pentose Phosphate,Pathways, Pentose-Phosphate,Pathways, Pentosephosphate,Pentose Phosphate Pathways,Pentose Phosphate Shunts,Pentose Shunts,Pentose-Phosphate Pathways,Pentosephosphate Pathways,Pentosephosphate Shunts,Shunt, Hexose Monophosphate,Shunt, Pentose,Shunt, Pentose Phosphate,Shunt, Pentosephosphate,Shunts, Hexose Monophosphate,Shunts, Pentose,Shunts, Pentose Phosphate,Shunts, Pentosephosphate
D004791	Enzyme Inhibitors	Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.	Enzyme Inhibitor,Inhibitor, Enzyme,Inhibitors, Enzyme
D004912	Erythrocytes	Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN.	Blood Cells, Red,Blood Corpuscles, Red,Red Blood Cells,Red Blood Corpuscles,Blood Cell, Red,Blood Corpuscle, Red,Erythrocyte,Red Blood Cell,Red Blood Corpuscle
D005954	Glucosephosphate Dehydrogenase		Glucose-6-Phosphate Dehydrogenase,Dehydrogenase, Glucose-6-Phosphate,Dehydrogenase, Glucosephosphate,Glucose 6 Phosphate Dehydrogenase
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D001667	Binding, Competitive	The interaction of two or more substrates or ligands with the same binding site. The displacement of one by the other is used in quantitative and selective affinity measurements.	Competitive Binding
D013457	Sulfur Compounds	Inorganic or organic compounds that contain sulfur as an integral part of the molecule.	Sulfur Compound,Compound, Sulfur,Compounds, Sulfur