Inhibition of the substantia nigra pars reticulata produces divergent effects on sensorimotor gating in rats and monkeys.

Inhibition of the substantia nigra pars reticulata produces divergent effects on sensorimotor gating in rats and monkeys.
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DOI:
10.1038/s41598-018-27577-w
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发表时间:
2018-06-19
期刊:
影响因子:
4.6
通讯作者:
Malkova L
Malkova L
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Aguilar BL;Forcelli PA;Malkova L

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基底节是一组进化上古老的结构,大体组织在不同物种之间保存不变。尽管存在这种保守性,但有证据表明,基底节的关键输出核--黑质网状核(SNPR)的解剖组织在不同物种之间存在差异。然而,考察SNPR跨物种操纵的影响的比较研究相对较少。在这里,我们评估了SNPR在一种高度保守的行为中的作用:脉冲前抑制声学惊厥反应(PPI)。我们在大鼠和恒河猴身上进行了平行实验,使用GABAA激动剂Muscimol的颅内微量输注来研究SNPR在PPI中的作用。SNPR失活显著扰乱大鼠的PPI,这与先前的研究一致;然而,在猕猴中,SNPR失活导致PPI的促进。我们认为,这种电路功能的差异是由于解剖连接的差异,强调了跨物种电路解剖研究的重要性。
The basal ganglia are an evolutionarily old group of structures, with gross organization conserved across species. Despite this conservation, there is evidence suggesting that anatomical organization of a key output nucleus of the basal ganglia, the substantia nigra pars reticulata (SNpr), diverges across species. Nevertheless, there are relatively few comparative studies examining the impact of manipulations of SNpr across species. Here, we evaluated the role of SNpr in a highly conserved behavior: prepulse inhibition of the acoustic startle response (PPI). We performed parallel experiments in both rats and rhesus macaques using intracranial microinfusions of GABAA agonist muscimol to investigate the role of SNpr in PPI. SNpr inactivation significantly disrupted PPI in rats, congruent with prior studies; however, in macaques, SNpr inactivation resulted in facilitation of PPI. We suggest that this difference in circuit function results from a divergence in anatomical connectivity, underscoring the importance of circuit dissection studies across species.
DOI: 10.1073/pnas.1320562111
发表时间: 2014-03-18
影响因子: 11.1
作者:
Forcelli, Patrick A.;Palchik, Guillermo;Malkova, Ludise
通讯作者: Malkova, Ludise
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发表时间: 1997-04-14
期刊: NEUROREPORT
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