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- W1556378034 abstract "The effect of nineteen antiarrhythmic agents on nonenzymatic lipid peroxidation, using rat hepatic microsomes, was studied. Lipid peroxidation was induced by Fe2+-ascorbic acid and assayed spectrophotometrically by measuring the 2-thiobarbituric acid reactive material. The compounds tested have various structural characteristics and represent class I and III of antiarrhythmics as classified by Vaughan Williams. The rm values, derived from reversed-phase thin-layer chromatography, were determined, and ∑f values calculated in order to correlate lipophilicity and antioxidant activity. The antiarrhythmics studied inhibited lipid peroxidation to various degrees. No apparent structural factor could definitely be attributed to this effect and antioxidants are found among both class I and class III compounds. There is a trend toward a parabolic relationship between antioxidant potency and lipophilicity. Three of the tested antiarrhythmics, namely the lipophilic amiodarone, aprindine and asocainol, were very potent antioxidants, and a further investigation of concentration and time dependency of lipid peroxidation was performed. It is suggested that, at least for some antiarrhythmic drugs, antioxidant activity may be part of their mode of action, and that it may form an additional beneficial feature for the treatment of cardiac failure." @default.
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- W1556378034 date "1990-01-01" @default.
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- W1556378034 title "Molecular pharmacological aspects of antiarrhythmic activity I" @default.
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- W1556378034 doi "https://doi.org/10.1016/0006-2952(90)90652-2" @default.
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