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

Cyanamide reduces brain catalase and ethanol-induced locomotor activity: is there a functional link?

The present study was designed in an attempt to assess a previously suggested role of brain catalase activity in ethanol-induced behaviour by examining ethanol-induced locomotor activity in cyanamide-treated mice. Mice were pretreated with IP injections of the catalase inhibitor cyanamide (3.75, 7.5, 15, 30 or 45 mg/kg) or saline. Following this treatment, animals in each group received IP injections of ethanol (0.0, 1.6, 2.4 or 3.2 g/kg) and locomotion was recorded. Several time intervals (0, 5, 10, 15, 20 or 25 h) between the two treatments were also evaluated. Results indicated that cyanamide administration produced a dose-dependent decrease in ethanol-induced locomotor activity that depends on the time between treatments. However, cyanamide did not change spontaneous or d-amphetamine-induced locomotor activity. Moreover, an additive effect of cyanamide and another brain catalase inhibitor, 3-amino-1,2,4-triazole (AT), on the reduction of ethanol-induced locomotor activity was observed. Perfused brain homogenates of mice treated with cyanamide, AT or cyanamide+AT showed a significant reduction of brain catalase activity. The dose and time patterns of both effects were closely related and a significant correlation between them was obtained. These results suggest that cyanamide could reduce locomotor activity through its inhibition of brain catalase, giving further support to the notion that brain catalase may be an important regulator of some ethanol-induced behavioural effects.[1]


  1. Cyanamide reduces brain catalase and ethanol-induced locomotor activity: is there a functional link? Sanchis-Segura, C., Miquel, M., Correa, M., Aragon, C.M. Psychopharmacology (Berl.) (1999) [Pubmed]
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