Dopamine D2 receptor signaling controls neuronal cell death induced by muscarinic and glutamatergic drugs (Articolo in rivista)

Type
Label
  • Dopamine D2 receptor signaling controls neuronal cell death induced by muscarinic and glutamatergic drugs (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bozzi Y., Borrelli E. (2002)
    Dopamine D2 receptor signaling controls neuronal cell death induced by muscarinic and glutamatergic drugs
    in Molecular and cellular neurosciences (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bozzi Y., Borrelli E. (literal)
Pagina inizio
  • 263 (literal)
Pagina fine
  • 271 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 19 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • Dopamine D2 receptor signaling controls neuronal cell death induced by muscarinic and glutamatergic drugs (literal)
Abstract
  • Dopamine (DA), through D1/D2 receptor-mediated signaling, plays a major role in the control of epileptic seizures arising in the limbic system. Excitotoxicity leading to neuronal cell death in the affected areas is a major consequence of seizures at the cellular level. In this respect, little is known about the role of DA receptors in the occurrence of epilepsy-induced neuronal cell death. Here we analyze the occurrence of seizures and neurotoxicity in D2R -/- mice treated with the cholinergic agonist pilocarpine. We compared these results with those previously obtained with kainic acid (KA), a potent glutamate agonist. Importantly, D2R -/- mice develop seizures at doses of both drugs that are not epileptogenic for WT littermates and show greater neurotoxicity. However, pilocarpine-induced seizures result in a more widespread neuronal death in both WT and D2R -/- brains in comparison to KA. Thus, the absence of D2R lowers the threshold for seizures induced by both glutamate and acetylcholine. Moreover, the dopaminergic control of epilepsy-induced neurodegeneration seems to be mediated by distinct interactions of D2R signaling with these two neurotransmitters. (literal)
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