Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Stephen Gene Sullivan"'
Publikováno v:
Free Radical Biology and Medicine. 9:5-10
Hemin binding to red cell membranes, its effect on red cell hemolysis, and it interaction with desferrioxamine (DFO) in these processes were investigated. DFO interacted with hemin via the iron moiety. Blockage of the binding groups in DFO prevented
Autor:
Jamin M. Wang, Arnold Stern, Jian-Shen Qi, Mourad Errasfa, Stephen Gene Sullivan, Daniel T.Y. Chiu
Publikováno v:
Free radical biologymedicine. 16(3)
Oxidative stress has been implicated in protein phosphorylation and dephosphorylation in cells. In our current studies, H2O2 was shown to reversibly inhibit protein tyrosine phosphatase (PTPase) activity in HER14 cells. H2O2 (150 mM) resulted in 40%
Publikováno v:
Biochimica et biophysica acta. 1104(1)
Hemin binds to red cell membranes during hemin-induced hemolysis but the precise mechanism of hemolysis has not been characterized. Desferrioxamine (DFO), an iron chelator, inhibited hemin-induced hemolysis. DFO partially prevented hemin binding to r
Publikováno v:
Journal of applied toxicology : JAT. 10(2)
The effect on red blood cell metabolism of a series of substituted 1,4-naphthoquinones has been investigated. 2-Methoxy-1,4-naphthoquinone was found to be a potent oxidative compound, generating hydrogen peroxide in erythrocytes and causing both meth
Publikováno v:
Free Radical Biology and Medicine. 9:21
Publikováno v:
Free Radical Research Communications. 8:55-59
The binding of Fe3+ to red cell membranes was studied in a system in which lipid peroxidation was proportional to Fe3+ concentration. Binding of Fe3+ was evaluated by labeling with 59FeCl3 and measurement of NMR water-proton relaxation times. Labelin
Publikováno v:
Archives of Biochemistry and Biophysics. 176:225-234
A reliable and reproducible assay was developed for measuring mitochondrial α-keto acid decarboxylase activity using ferricyanide as the electron acceptor. This method permitted the functional isolation and investigation of the decarboxylase step of
Autor:
Arnold Stern, Stephen Gene Sullivan
Publikováno v:
Biochemical Pharmacology. 33:1417-1421
Red cells suspended in either defined medium or buffered plasma were oxidatively stressed by incubation in the presence of 1, 4-naphthoquinone-2-sulfonate at concentrations which caused less than 50% methemoglobin accumulation, stimulation of the hex
Publikováno v:
Biochemical Journal. 212:759-772
Red cells exposed to t-butyl hydroperoxide undergo lipid peroxidation, haemoglobin degradation and hexose monophosphate-shunt stimulation. By using the lipid-soluble antioxidant 2,6-di-t-butyl-p-cresol, the relative contributions of t-butyl hydropero
Publikováno v:
International Journal of Biochemistry. 21:1109-1113
1. t-Butylhydroperoxide (tBuOOH) a lipoperoxide analog, causes rapid and considerable sulphydryl (SH) oxidation but almost no lipid peroxidation in red blood cell membranes (ghosts) containing no detectable haemoglobin. 2. tBuOOH, in the presence of