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Intrastriatal methylmalonic acid administration induces rotational behavior and convulsions through glutamatergic mechanisms

by: Carlos F. de Mello, Jairo Begnini, Rolando E. Jiménez-Bernal, Maribel A. Rubin, Juliano de Bastiani, da Costa, Moacir Wajner
Brain Research, Vol. 721, No. 1-2. (May 1996), pp. 120-125, doi:10.1016/0006-8993(96)00117-5  Key: citeulike:12089819

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Abstract

The effect of intrastriatal administration of methylmalonic acid (MMA), a metabolite that accumulates in methylmalonic aciduria, on behavior of adult male Wistar rats was investigated. After cannula placing, rats received unilateral intrastriatal injections of MMA (buffered to pH 7.4 with NaOH) or NaCl. MMA induced rotational behavior toward the contralateral side of injection and clonic convulsions in a dose-dependent manner. Rotational behavior and convulsions were prevented by intrastriatal preadministration of MK-801 and attenuated by preadministration of succinate. This study provides evidence for a participation of NMDA receptors in the MMA-induced behavioral alterations, where succinate dehydrogenase inhibition seems to have a pivotal role.


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