| First Author | Bozzi Y | Year | 2002 |
| Journal | Mol Cell Neurosci | Volume | 19 |
| Issue | 2 | Pages | 263-71 |
| PubMed ID | 11860278 | Mgi Jnum | J:75428 |
| Mgi Id | MGI:2176618 | Doi | 10.1006/mcne.2001.1064 |
| Citation | Bozzi Y, et al. (2002) Dopamine d2 receptor signaling controls neuronal cell death induced by muscarinic and glutamatergic drugs. Mol Cell Neurosci 19(2):263-71 |
| abstractText | 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 minus sign/minus sign 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 minus sign/minus sign 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 minus sign/minus sign 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. (C)2002 Elsevier Science (USA). |
