Abstract：
:The effects of GM1 ganglioside (30 mg/kg i.p.) administration for 22 days on choline acetyltransferase (ChAT) activity and noradrenaline (NA) levels in the cerebral cortex and on the acquisition of active and passive avoidance-conditioned responses were investigated in both sham-operated rats and in rats with a unilateral electrolytic lesion of the magnocellular forebrain nuclei (MFN). A statistically significant ChAT decrease in cortical areas ipsilateral to the lesion was found in saline-treated lesioned rats. In the lesioned GM1-treated rats, ChAT activity was only reduced in the frontoparietal areas and was significantly increased in the ipsilateral parietooccipital areas as well as in both contralateral regions. NA levels in the cortex were neither significantly affected by the lesion nor by GM1 treatment. The lesion impaired the acquisition of active and passive conditioned avoidance responses. GM1 treatment improved acquisition of the active avoidance response in the lesioned rats as indicated by a larger number of avoidances and a smaller number of escape failures during training in comparison with saline treatment. Ganglioside had no effect on the passive avoidance responses. These results demonstrate that GM1 administration facilitates the recovery of the cortical cholinergic system and of behavioral responses impaired by an electrolytic lesion of the cholinergic forebrain nuclei.
journal_name
Brain Resjournal_title
Brain researchauthors
Casamenti F,Bracco L,Bartolini L,Pepeu Gdoi
10.1016/0006-8993(85)90246-xsubject
Has Abstractpub_date
1985-07-08 00:00:00pages
45-52issue
1eissn
0006-8993issn
1872-6240pii
0006-8993(85)90246-Xjournal_volume
338pub_type
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