Spontaneous reactivation of fenitro-oxon-inhibited plasma cholinesterase in various mammals.
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منابع مشابه
Reactivation of Human Acetylcholinesterase and Butyrylcholinesterase Inhibited by Leptophos-Oxon with Different Oxime Reactivators in Vitro
We have evaluated in vitro the potency of 23 oximes to reactivate human erythrocyte acetylcholinesterase (AChE) and plasma butyrylcholinesterase (BChE) inhibited by racemic leptophos-oxon (O-[4-bromo-2,5-dichlorophenyl]-O-methyl phenyl-phosphonate), a toxic metabolite of the pesticide leptophos. Compounds were assayed in concentrations of 10 and 100 μM. In case of leptophos-oxon inhibited AChE,...
متن کاملThe reactivation of cholinesterase inhibited with organophosphorus compounds. 2. Reactivation by pyridinealdoxime methiodides.
Material8 The pyridinealdoxime methiodides were obtained by boiling the oximes with methyl iodide in ethanol (Green & Saville, 1956). Quinoline-4-aldoxime methiodide, m.p. 232-233° (Found: I 40x2. C11H11N20I requires 1 40.4%) and pyridine-2-alidoxime ethiodide, m.p. 186-188° (Found: I 45-3. C8H11N20I requires I 45-6%) were prepared similarly. Reactivation experiments These were carried out on h...
متن کاملThe kinetics of reactivation, by oximes, of cholinesterase inhibited by organophosphorus compounds.
The inhibition of cholinesterase (ChE) and related enzymes, by organophosphorus compounds, is generally believed to occur by direct phosphorylation of some group at the active centre of the enzyme, together with the liberation of an acid anion (Wilson, 1951; Balls & Jansen, 1952; Hartley & Kilby, 1952; Aldridge, 1954; Kilby & Youatt, 1954). Inhibition by organophosphorus compounds is generally ...
متن کاملOxime reactivation of erythrocyte cholinesterase inhibited by ethyl p-nitrophenyl ethylphosphonate.
1. Reactivation of erythrocyte cholinesterase inhibited by ethyl p-nitrophenyl ethylphosphonate (armine) was studied with NN'-dimethylenebis-(4-hydroxy-iminomethylpyridinium bromide) (C(2)-oxime), NN'-trimethylenebis-(4-hydroxy-iminomethylpyridinium bromide) (C(3)-oxime), NN'-tetramethylene-(4-hydroxy-iminomethylpyridinium bromide) (C(4)-oxime) and NN'-pentamethylenebis-(4-hydroxyiminomethylpyr...
متن کاملOxime reactivation of diethylphosphoryl human serum cholinesterase.
Reactivation of diethyl p-nitrophenyl phosphate inhibited human serum cholinesterase by pyridine-Z-aldoxime methiodide and isonitrosoacetophenone has been investigated as a function of reactivator concentration, pH, and temperature in boric acid-borax buffer and in salt solution. Constants shown were the dissociation constants of the diethylphosphoryl cholinesterase reactivator complex for the ...
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ژورنال
عنوان ژورنال: Journal of Pharmacobio-Dynamics
سال: 1982
ISSN: 0386-846X,1881-1353
DOI: 10.1248/bpb1978.5.155