Interneuron Diversity in Layers 2-3 of Monkey Prefrontal Cortex

被引:93
作者
Zaitsev, Aleksey V. [1 ]
Povysheva, Nadezhda V. [1 ]
Gonzalez-Burgos, Guillermo [1 ]
Rotaru, Diana [1 ]
Fish, Kenneth N. [1 ]
Krimer, Leonid S. [1 ]
Lewis, David A. [1 ,2 ]
机构
[1] Univ Pittsburgh, Dept Psychiat, Pittsburgh, PA 15213 USA
[2] Univ Pittsburgh, Dept Neurosci, Pittsburgh, PA 15213 USA
基金
美国国家卫生研究院;
关键词
cerebral cortex; fast-spiking cells; GABA cells; inhibition; parvalbumin; patch clamp; LOCAL-CIRCUIT NEURONS; RAT FRONTAL-CORTEX; GENE-EXPRESSION PROFILES; GABAERGIC CELL SUBTYPES; SYNAPTIC CONNECTIONS; PYRAMIDAL NEURONS; SOMATOSENSORY CORTEX; INHIBITORY NEURONS; VISUAL-CORTEX; MORPHOLOGICAL-CHARACTERISTICS;
D O I
10.1093/cercor/bhn198
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The heterogeneity of gamma-aminobutyric acid interneurons in the rodent neocortex is well-established, but their classification into distinct subtypes remains a matter of debate. The classification of interneurons in the primate neocortex is further complicated by a less extensive database of the features of these neurons and by reported interspecies differences. Consequently, in this study we characterized 8 different morphological types of interneurons from monkey prefrontal cortex, 4 of which have not been previously classified. These interneuron types differed in their expression of molecular markers and clustered into 3 different electrophysiological classes. The first class consisted of fast-spiking parvalbumin-positive chandelier and linear arbor cells. The second class comprised 5 different morphological types of continuous-adapting calretinin- or calbindin-positive interneurons that had the lowest level of firing threshold. However, 2 of these morphological types had short spike duration, which is not typical for rodent adapting cells. Neurogliaform cells (NGFCs), which coexpressed calbindin and neuropeptide Y, formed the third class, characterized by strong initial adaptation. They did not exhibit the delayed spikes seen in rodent NGFCs. These results indicate that primate interneurons have some specific properties; consequently, direct translation of classification schemes developed from studies in rodents to primates might be inappropriate.
引用
收藏
页码:1597 / 1615
页数:19
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