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Author:

Li, Xu-Hui (Li, Xu-Hui.) | Song, Qian (Song, Qian.) | Chen, Qi-Yu (Chen, Qi-Yu.) | Lu, Jing-Shan (Lu, Jing-Shan.) | Chen, Tao (Chen, Tao.) | Zhuo, Min (Zhuo, Min.) (Scholars:卓敏)

Indexed by:

SCIE PubMed Scopus

Abstract:

The tree shrew, as a primate-like animal model, has been used for studying high brain functions such as social emotion and spatial learning memory. However, little is known about the excitatory synaptic transmission in cortical brain areas of the tree shrew. In the present study, we have characterized the excitatory synaptic transmission and intrinsic properties of pyramidal neurons in the anterior cingulate cortex (ACC) of the adult tree shrew, a key cortical region for pain perception and emotion. We found that glutamate is the major excitatory transmitter for fast synaptic transmission. Excitatory synaptic responses induced by local stimulation were mediated by AMPA and kainate (KA) receptors. As compared with mice, AMPA and KA receptor mediated responses were significantly greater. Interestingly, the frequency of spontaneous excitatory postsynaptic currents (sEPSCs) and miniature excitatory postsynaptic currents (mEPSCs) in tree shrews was significantly less than that of mice. Moreover, both the ratio of paired-pulse facilitation (PPF) and the time of 50% decay for fast blockade of NMDA receptor mediated EPSCs were greater in the tree shrew. Finally, tree shrew neurons showed higher initial firing frequency and neuronal excitability with a cell type-specific manner in the ACC. Our studies provide the first report of the basal synaptic transmission in the ACC of adult tree shrew.

Keyword:

Anterior cingulate cortex Calcium signals Excitatory synaptic transmission Glutamate Intrinsic properties Tree shrew

Author Community:

  • [ 1 ] [Li, Xu-Hui; Song, Qian; Chen, Qi-Yu; Lu, Jing-Shan; Chen, Tao; Zhuo, Min] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China
  • [ 2 ] [Chen, Tao] Fourth Mil Med Univ, Dept Anat, Xian 710032, Shaanxi, Peoples R China
  • [ 3 ] [Chen, Tao] Fourth Mil Med Univ, KK Leung Brain Res Ctr, Xian 710032, Shaanxi, Peoples R China
  • [ 4 ] [Zhuo, Min] Univ Toronto, Dept Physiol, Fac Med, Med Sci Bldg,Room 3342,1 Kings Coll Circle, Toronto, ON M5S 1A8, Canada
  • [ 5 ] [Li, Xu-Hui]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China
  • [ 6 ] [Song, Qian]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China
  • [ 7 ] [Chen, Qi-Yu]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China
  • [ 8 ] [Lu, Jing-Shan]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China
  • [ 9 ] [Chen, Tao]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China
  • [ 10 ] [Zhuo, Min]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China
  • [ 11 ] [Chen, Tao]Fourth Mil Med Univ, Dept Anat, Xian 710032, Shaanxi, Peoples R China
  • [ 12 ] [Chen, Tao]Fourth Mil Med Univ, KK Leung Brain Res Ctr, Xian 710032, Shaanxi, Peoples R China
  • [ 13 ] [Zhuo, Min]Univ Toronto, Dept Physiol, Fac Med, Med Sci Bldg,Room 3342,1 Kings Coll Circle, Toronto, ON M5S 1A8, Canada

Reprint Author's Address:

  • 卓敏

    Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Ctr Neuron & Dis, Xian 710049, Peoples R China.; Zhuo, M (reprint author), Univ Toronto, Dept Physiol, Fac Med, Med Sci Bldg,Room 3342,1 Kings Coll Circle, Toronto, ON M5S 1A8, Canada.

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Source :

MOLECULAR BRAIN

ISSN: 1756-6606

Year: 2017

Volume: 10

3 . 4 4 9

JCR@2017

4 . 0 4 1

JCR@2020

ESI Discipline: NEUROSCIENCE & BEHAVIOR;

ESI HC Threshold:158

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 9

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 11

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