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@ARTICLE{Gruss:136539,
author = {Gruss, Michael and Appenroth, Dorothea and Flubacher, Armin
and Enzensperger, Christoph and Bock, Jörg and Fleck,
Christian and Gille, Gabriele and Braun, Katharina},
title = {9-{M}ethyl-β-carboline-induced cognitive enhancement is
associated with elevated hippocampal dopamine levels and
dendritic and synaptic proliferation.},
journal = {Journal of neurochemistry},
volume = {121},
number = {6},
issn = {0022-3042},
address = {Oxford},
publisher = {Wiley-Blackwell},
reportid = {DZNE-2020-02861},
pages = {924-931},
year = {2012},
abstract = {β-Carbolines (BCs) belong to the heterogenous family of
carbolines, which have been found exogenously, that is, in
various fruits, meats, tobacco smoke, alcohol and coffee,
but also endogenously, that is, blood, brain and CSF. These
exogenous and endogenous BCs and some of their metabolites
can exert neurotoxic effects, however, an unexpected
stimulatory effect of 9-methyl-β-carboline (9-me-BC) on
dopaminergic neurons in primary mesencephalic cultures was
recently discovered. The aim of the present study was to
extend our knowledge on the stimulatory effects of 9-me-BC
and to test the hypothesis that 9-me-BC may act as a
cognitive enhancer. We found that 10 days (but not 5 days)
of pharmacological treatment with 9-me-BC (i) improves
spatial learning in the radial maze, (ii) elevates dopamine
levels in the hippocampal formation, and (iii) results after
10 days of treatment in elongated, more complex dendritic
trees and higher spine numbers on granule neurons in the
dentate gyrus of 9-me-BC-treated rats. Our results
demonstrate that beyond its neuroprotective/neurorestorative
and anti-inflammatory effects, 9-me-BC acts as a cognitive
enhancer in a hippocampus-dependent task, and that the
behavioral effects may be associated with a stimulatory
impact on hippocampal dopamine levels and dendritic and
synaptic proliferation.},
keywords = {Animals / Carbolines: pharmacology / Central Nervous System
Stimulants: pharmacology / Chromatography, High Pressure
Liquid / Cognition: drug effects / Dendrites: drug effects /
Dopamine: metabolism / Female / Hippocampus: drug effects /
Hippocampus: metabolism / Hippocampus: ultrastructure / Maze
Learning: drug effects / Rats / Rats, Wistar / Synapses:
drug effects / 9-methyl-beta-carboline (NLM Chemicals) /
Carbolines (NLM Chemicals) / Central Nervous System
Stimulants (NLM Chemicals) / Dopamine (NLM Chemicals)},
cin = {AG Reymann},
ddc = {610},
cid = {I:(DE-2719)1310005},
pnm = {342 - Disease Mechanisms and Model Systems (POF3-342)},
pid = {G:(DE-HGF)POF3-342},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22380576},
doi = {10.1111/j.1471-4159.2012.07713.x},
url = {https://pub.dzne.de/record/136539},
}