On the response of hepatic glucose-6-phosphate dehydrogenase activity to changes in diet composition and food intake pattern

1963 ◽  
Vol 1 ◽  
pp. 121-136 ◽  
Author(s):  
Helen M. Tepperman ◽  
Jay Tepperman ◽  
Janet D. Pownall ◽  
Andrew Branch
Keyword(s):  
Food Intake ◽  
Dehydrogenase Activity ◽  
Diet Composition ◽  
Hepatic Glucose ◽  
Food Intake Pattern ◽  
Glucose 6 Phosphate Dehydrogenase

scholarly journals A critical appraisal of the effect of oxidized glutathione on hepatic glucose 6-phosphate dehydrogenase activity

1983 ◽  
Vol 214 (3) ◽  
pp. 959-965 ◽  
Author(s):  
H R Levy ◽  
M Christoff
Keyword(s):  
Glutathione Reductase ◽  
Dehydrogenase Activity ◽  
Rat Liver ◽  
Critical Appraisal ◽  
Oxidized Glutathione ◽  
Assay Procedure ◽  
Low Concentrations ◽  
Hepatic Glucose ◽  
Spurious Effect ◽  
Glucose 6 Phosphate Dehydrogenase

Experiments were undertaken to elucidate the mechanism of the reversal of NADPH inhibition of rat liver glucose 6-phosphate dehydrogenase by oxidized gluthathione alone and in combination with a putative cofactor described by Eggleston & Krebs [(1974) Biochem. J. 138, 425-435]. Evidence is presented that this reversal is largely an artifact, caused by the incorrect application of a control assay procedure and a spurious effect of Zn2+ (added in order to inhibit glutathione reductase) in crude enzyme solutions. When the proper assay procedure is used and glutathione reductase is inhibited with low concentrations of Hg2+, glutathione addition has no effect on NADPH inhibition of glucose 6-phosphate dehydrogenase. No evidence was found for the existence of a cofactor that mediates an effect of glutathione on glucose 6-phosphate dehydrogenase.

ACUTE ENZYME HISTOCHEMICAL CHANGES IN THE ZONA GLOMERULOSA OF THE RAT ADRENAL CORTEX

1968 ◽  
Vol 59 (3) ◽  
pp. 508-518
Author(s):  
J. D. Elema ◽  
M. J. Hardonk ◽  
Joh, Koudstaal ◽  
A. Arends
Keyword(s):  
Peritoneal Dialysis ◽  
Succinate Dehydrogenase ◽  
Dehydrogenase Activity ◽  
Adrenal Cortex ◽  
Isocitrate Dehydrogenase ◽  
Hydroxysteroid Dehydrogenase ◽  
Zona Glomerulosa ◽  
Acute Changes ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Histochemical Changes

ABSTRACT Acute changes in glucose-6-phosphate dehydrogenase and isocitrate dehydrogenase activity in the zona glomerulosa of the rat adrenal cortex were induced by peritoneal dialysis with 5 % glucose. Although less clear, the activity of 3β-ol-hydroxysteroid dehydrogenase also seemed to increase as well. No changes were seen in the activity of succinate dehydrogenase. Dialysis with 0.9 % NaCl had no effect on any of the enzymes investigated. The possible significance of these observations is discussed.

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