Distribution of Calretinin Immunoreactivity in the Lateral Nucleus of the Bottlenose Dolphin (Tursiops truncatus) Amygdala.
Anat Rec (Hoboken)
; 300(11): 2008-2016, 2017 Nov.
Article
em En
| MEDLINE
| ID: mdl-28681399
ABSTRACT
The amgdaloid complex consists of different nuclei, each with unique cytoarchitectonic, chemoarchitectonic and connectional characteristics. Most of the inputs coming from cortical and subcortical areas enter the amygdala via the lateral nucleus, which makes it the main receiving structure of the complex. The activity of its neurons is coordinated and modulated by different inhibitory, GABAergic-interneurons, which can be classified for their expression of various calcium-binding proteins, as well as by morphological characteristics. This research based on the analysis of the amygdala of three bottlenose dolphins, provides the first description of the topography, cytoarchitecture and distribution of calretinin immunoreactivity of the lateral nucleus. Our observations on the bottlenose dolphin confirmed the general topography of the mammalian amygdala and of the lateral nucleus. Notably, we identified six subdivision of the nucleus, more than those reported until now in the rat, monkey and human lateral nucleus. This could reveal an outstanding capability of integration and elaboration of external stimuli. In addition, we observed a strong presence of CR-immunoreactive (-ir) neurons and fibres. CR-ir neurons were mainly non-pyramidal inhibitory neurons; in particular, 80% of IR-cells were represented by large and small polygonal neurons. In the lateral nucleus of the human amygdala, CR-ir neurons form inhibitory synapses on calbindin-D28k-IR inhibitory interneurons. Since calbindin-D28k-ir interneurons make inhibitory synapses on the pyramidal cells, the final goal of the CR-ir interneurons could be the synchronization of cells activity, thus playing an important role in the control of information flow in the lateral amygdalar nucleus. Anat Rec, 2017. © 2017 Wiley Periodicals, Inc. Anat Rec, 3002008-2016, 2017. © 2017 Wiley Periodicals, Inc.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sinapses
/
Golfinho Nariz-de-Garrafa
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Calbindina 2
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Tonsila do Cerebelo
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Interneurônios
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Anat Rec (Hoboken)
Assunto da revista:
ANATOMIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Itália
País de publicação:
EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
/
UNITED STATES
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UNITED STATES OF AMERICA
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US
/
USA