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Rubaj, A. et al.

Rubaj, Zgodziński, Sieklucka-Dziuba,

The influence of adenosine A3 receptor agonist: IB-MECA, on scopolamine- and MK-801-induced memory impairment.

The effects of adenosine A3 agonist IB-MECA on scopolamine- and MK-801-induced impairment of spontaneous alternation and learning abilities were examined using Y-maze and passive avoidance tasks in mice. IB-MECA given 20 min before test had no effect on spontaneous alternation performance. Similarly learning abilities tested in passive avoidance were not disturbed after IB-MECA administration before training session. IB-MECA significantly diminished scopolamine- and MK-801-induced impairment of spontaneous alternation in Y-maze and learning abilities in passive avoidance task as well as reduced higher locomotor activity in MK-801-treated group. This ameliorating effect of IB-MECA was not antagonised by adenosine A1 antagonists CPX. Obtained results indicate that adenosine A3 receptor stimulation may ameliorate spatial memory and long term memory impairments in terms of cholinergic and glutamatergic deficits induced by scopolamine and MK-801, respectively.[1]

References

The influence of adenosine A3 receptor agonist: IB-MECA, on scopolamine- and MK-801-induced memory impairment. Rubaj, A., Zgodziński, W., Sieklucka-Dziuba, M. Behav. Brain Res. (2003) [Pubmed]

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