martes, mayo 29, 2007

Citicolina mejora la memoria en ratas tratadas con bromazepam

Citicoline antagonizes bromazepam-induced amnesia in rats
X. Antón Alvarez 1 *, Begoña Vecino 1, Juan Enrique Perea 2, Danilo Daniele 2, Ramón Cacabelos 1
1EuroEspes Biomedical Research Center, A Coruña, Spain
2Laboratorios Baliarda, Buenos Aires, Argentina
email: X. Antón Alvarez ( )

*Correspondence to X. Antón Alvarez, Department of Neuropharmacology, EuroEspes Biomedical Research Center, Santa Marta de Babío, 15166-Bergondo, A Coruña, Spain. Tel and Fax: 34-81-78 05 05.

Funded by:
 Laboratories Baliarda, Argentina
 EuroEspes Foundation, Spain
citicoline • bromazepam • acquisition • retention • memory • amnesia • motor co-ordination • exploratory activity

Citicoline is an endogenous intermediate in the biosynthesis of brain phospholipids and acetylcholine used for the treatment of neurodegenerative processes associated with head trauma, stroke, brain aging, cerebrovascular pathology and Alzheimer's disease. In this study we have investigated the effects of citicoline on acquisition and retention in passive avoidance and spatial discriminative learning tasks in control rats and in bomazepam-treated animals. Interactions of citicoline with bromazepam on exploratory behaviour (anxiolytic/sedative activity) and motor co-ordination (myorelaxing activity) were also evaluated to test the specificity of the cognitive effects of citicoline. Our results indicate that citicoline reverses bromazepam-induced amnesia, improves retention in control rats, and has no significant effects on spontaneous activity and motor co-ordination when given alone or in combination with bromazepam. According to these results we conclude that citicoline acts as a promnesic and anti-amnesic drug with no sedative-myorelaxing activity in rats. Therefore, this compound might be of use for the specific treatment of cognitive impairments associated with the chronic use of benzodiazepines. © 1997 John Wiley & Sons, Ltd.

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