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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The ethanol-induced open-field activity in rodents treated with isethionic acid, a central metabolite of taurine.

The effect of isethionic acid, a central metabolite of taurine, on ethanol-induced locomotor activity was investigated in rodents. Ten minutes following an (i.p.) simultaneous administration of ethanol (0.0, 1.5, 2.0, 2.5, 3.0, 3.5 g/kg) and isethionic acid (0.0, 22.5, 45.0, 90.0, 180.0 mg/kg), mice were placed in the open-field chambers and locomotor activity was measured during a ten-minute testing period. A significant interaction was found between isethionic acid and ethanol. Isethionic acid pre-treated mice (45.0, 90.0 and 180.0 mg/kg) showed a higher locomotor activity than the saline group at 2.5 and 3 g/kg of ethanol. In a second study, isethionic acid (45 mg/kg) and ethanol (1 g/kg) were simultaneously injected to rats. Ten minutes after the two treatments, rats were placed in the open-field chamber for a 30-minute period. The depressant effects that ethanol produced on rat locomotion were amplified by the same dose of isethionic acid as it affected ethanol-induced locomotion in mice (45 mg/kg). However, isethionic acid did not change the spontaneous locomotion at any of the doses tested in mice or rats. Since no differences in blood ethanol levels were detected in both mice and rats, the interaction between isethionic acid's action and ethanol-related locomotion does not seem to be due to different rates of absorption of ethanol or any other pharmacokinetic process related to ethanol levels. The current study displayed that isethionic acid, administered intraperitoneally, behaves in a similar way to its immediate precursor, taurine, by amplifying ethanol-induction of the locomotor activity.[1]


  1. The ethanol-induced open-field activity in rodents treated with isethionic acid, a central metabolite of taurine. Miquel, M., Correa, M., Sanchis-Segura, C., Aragon, C.M. Life Sci. (1999) [Pubmed]
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