Methotrexate: studies on cellular metabolism. III.--Effect on the transplasma-membrane redox activity and on ferricyanide-induced proton extrusion by HeLa cells.
The effect of methotrexate (MTX) on transplasma-membrane electron transport and ferricyanide-induced proton extrusion by HeLa cells was studied. Both systems were inhibited by MTX. It is suggested that inhibition of electron transport and proton extrusion caused by MTX could be associated with other metabolic alterations such as response to the increase in NADH levels and decrease in intracellular pH.
Oliveira
M B
MB
Departamento de Bioquimica da Universidade Federal do Paraná, Brasil.
Campello
A P
AP
Klüppel
W L
WL
D002462:Cell Membrane / Q000187:drug effects / Q000378:metabolism*; D005292:Ferricyanides / Q000494:pharmacology*; D006367:HeLa Cells / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D008727:Methotrexate / Q000494:pharmacology*; D009247:NADH, NADPH Oxidoreductases / Q000378:metabolism; D010084:Oxidation-Reduction; D011522:Protons
D005292:Ferricyanides; D011522:Protons; C007931:hexacyanoferrate III; D009247:NADH, NADPH Oxidoreductases; C014227:ferricyanide reductase; D008727:Methotrexate