School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Republic of South Africa.
Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Ilorin, Ilorin, Nigeria.
J Comp Neurol. 2022 Oct;530(15):2590-2610. doi: 10.1002/cne.25345. Epub 2022 May 14.
Here, we describe the cytoarchitecture and chemoarchitecture of the amygdaloid body of the tree pangolin. Our definition of the amygdaloid body includes the pallial portions of the amygdala, and the centromedial group that is a derivative of the subpallium and part of the extended amygdala. The remainder of the extended amygdala is not described herein. Within the amygdaloid body of the tree pangolin, we identified the basolateral group (composed of the lateral, basal, and accessory basal amygdaloid nuclei), the superficial, or cortical nuclei (the anterior and posterior cortical nuclei, the periamygdaloid cortex, and nuclei of the olfactory tract), the centromedial group (the central amygdaloid nucleus and the medial nuclear cluster), and other amygdaloid nuclei (the anterior amygdaloid area, the amygdalohippocampal area, the intramedullary group, and intercalated islands). The location within and relative to each other within the amygdaloid body and the internal subdivisions of these groups were very similar to that reported in other mammalian species, with no clearly derived features specific to the tree pangolin. The only variation was the lack of an insular appearance of the intercalated islands, which in the tree pangolin were observed as a continuous band of neurons located dorsomedial to the basolateral group similar in appearance to and almost continuous with the intramedullary group. In carnivores, the closest relatives of the pangolins, and laboratory rats, a similar appearance of portions of the intercalated islands has been noted.
在这里，我们描述了树穿山甲的杏仁体的细胞构筑和化学构筑。我们对杏仁体的定义包括了杏仁核的皮层部分和中央核团，中央核团是由下皮层衍生而来的，是扩展杏仁体的一部分。本文未描述扩展杏仁体的其余部分。在树穿山甲的杏仁体中，我们确定了基底外侧核群（由外侧核、基底核和辅助基底核组成）、浅层或皮质核（前皮质核和后皮质核、围杏仁皮质和嗅束核）、中央核群（杏仁中央核和内侧核簇）和其他杏仁核（前杏仁核区、杏仁海马区、髓内核群和镶嵌岛）。这些核群在杏仁体中的位置和彼此之间的相对位置与其他哺乳动物物种报告的非常相似，没有明显特化于树穿山甲的衍生特征。唯一的变化是镶嵌岛没有岛屿样外观，在树穿山甲中，这些岛状结构被观察到呈位于基底外侧核群背内侧的连续神经元带，外观与髓内核群相似，几乎连续。在食肉动物（穿山甲的近亲）和实验大鼠中，也观察到了类似的镶嵌岛部分的外观。
