Abstract：
:Dopamine (DA) contributes to the regulation of voluntary movement, and a deficiency in DAergic neurons leads to movement disorders. The objective of this study was to examine the neuroprotective effect of DA D2-like receptor agonist, lisuride, and the role of DA receptors in this protection. Treatment with lisuride alleviated loss of tyrosine hydroxylase (TH) both direct and intraperitoneal injection in 6-hydroxydopamine (6-OHDA) mouse model. Similar results were obtained in primary neuronal cultures treated with lisuride. Lisuride protected TH expression against 6-OHDA-induced cytotoxicity in a concentration-dependent manner. Then, we evaluated the role of DA D2 and D3 receptor in neuroprotective effect of lisuride. Treatment of neuronal cultures with L-741,626, a DA D2 receptor-selective antagonist, did not alter neuroprotective effect of lisuride. However, protective effect of lisuride on TH expression was abolished when cells were treated with GR103691, a D3 receptor selective antagonist. Furthermore, whether lisuride can alleviate mitochondrial damage of DAergic neurons induced by 6-OHDA, we investigated the expression of the mitochondrial regulatory protein, paraplegin, and changes in mitochondria morphology. Treatment with lisuride countered a 6-OHDA-induced reduction in paraplegin and TH expression, and co-treatment with GR103691 blocked this effect of lisuride. Transmission electron microscopy confirmed the lisuride mitigation of 6-OHDA-induced damage to the mitochondrial membrane and cristae. These results suggest that the DA D3 receptor mediates the neuroprotective effects of lisuride by preventing mitochondrial damage.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Kim M,Lee S,Cho J,Kim G,Won Cdoi
10.1016/j.neuropharm.2017.01.022subject
Has Abstractpub_date
2017-05-01 00:00:00pages
14-20eissn
0028-3908issn
1873-7064pii
S0028-3908(17)30023-0journal_volume
117pub_type
杂志文章abstract：:Maternal aggression is highly expressed during lactation and serves to protect the developing young from intruders that may injure the offspring. One neurochemical modulator of maternal aggression appears to be arginine vasopressin (AVP). Earlier research supports a role for AVP in maternal aggression in rats as treat...
journal_title：Neuropharmacology
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pub_type： 杂志文章
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更新日期：2015-10-01 00:00:00
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journal_title：Neuropharmacology
pub_type： 杂志文章
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journal_title：Neuropharmacology
pub_type： 杂志文章
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更新日期：2012-06-01 00:00:00
