Plasticity in D1-like receptor expression is associated with different components of cognitive processes.

Plasticity in D1-like receptor expression is associated with different components of cognitive processes.
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DOI:
10.1371/journal.pone.0036484
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Güntürkün O
Güntürkün O
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Herold C;Joshi I;Chehadi O;Hollmann M;Güntürkün O

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多巴胺 D1 样受体由 D1 (D1A) 和 D5 (D1B) 受体组成,在工作记忆中发挥关键作用。然而,它们对工作记忆可能的不同贡献尚不清楚。我们将工作记忆训练方案与逐步增加认知子成分以及鸽子多巴胺受体表达的实时 RT-PCR 分析相结合,以确定伴随孤立认知子功能训练的分子变化。在鸟类中,D1 样受体家族得到扩展,由 D1A、D1B 和 D1D 受体组成。我们的数据表明,D1B 受体可塑性遵循包括积极的信息心理维护在内的训练,而 D1A 和 D1D 受体可塑性还伴随着刺激-反应关联的学习。 D1 样受体的可塑性对于反应选择和刺激辨别等过程不起作用。所有任务均未改变 D2 受体表达。我们的研究表明,工作记忆训练的不同认知成分对 D1 样受体表达具有不同的影响。
Dopamine D1-like receptors consist of D1 (D1A) and D5 (D1B) receptors and play a key role in working memory. However, their possibly differential contribution to working memory is unclear. We combined a working memory training protocol with a stepwise increase of cognitive subcomponents and real-time RT-PCR analysis of dopamine receptor expression in pigeons to identify molecular changes that accompany training of isolated cognitive subfunctions. In birds, the D1-like receptor family is extended and consists of the D1A, D1B, and D1D receptors. Our data show that D1B receptor plasticity follows a training that includes active mental maintenance of information, whereas D1A and D1D receptor plasticity in addition accompanies learning of stimulus-response associations. Plasticity of D1-like receptors plays no role for processes like response selection and stimulus discrimination. None of the tasks altered D2 receptor expression. Our study shows that different cognitive components of working memory training have distinguishable effects on D1-like receptor expression.
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