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Identity of the cells recruited to a lesion in the central nervous system of a decapod crustacean

机译：十足纲甲壳动物中枢神经系统中受累的病变细胞的身份

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摘要

In a previous study, we analyzed and described the features of the degeneration of the protocerebral tract (PCT) of the crustacean Ucides cordatus, after the extirpation of the eyestalk. In that study, among axons with axoplasmic degeneration, cells with granules resembling blood cells (hemocytes) were seen. Therefore, in the present study, we characterized the circulating hemocytes and compared them with the cells recruited to a lesion, which was produced as in the former study. Using histochemistry, immunohistochemistry, and electron microscopy (transmission and scanning), we confirmed that circulating and recruited cells display a similar morphology. Therefore, in the crab, hemocytes were attracted to the lesion site in the acute stage of degeneration, appearing near local glial cells that showed signs of being responsive. Some of the attracted hemocytes displayed a morphology that was considered to be possibly activated blood cells. Also, the cells that migrated to the injured PCT displayed features, such as the presence of hydrolytic enzymes and an ability to phagocytize neural debris, similar to those of vertebrates. In summary, our results indicate that hemocytes were not only phagocytizing neural debris together with glial cells but also that they may be concerned with creating a favorable environment for regenerating events.
机译：在先前的研究中，我们分析并描述了在拔除眼球后甲壳类Ucides cordatus的前脑束（PCT）变性的特征。在该研究中，在具有轴质变性的轴突中，发现了具有类似于血细胞（血细胞）的颗粒的细胞。因此，在本研究中，我们对循环中的血细胞进行了表征，并将其与募集至病变的细胞进行了比较，后者与以前的研究一样产生。使用组织化学，免疫组织化学和电子显微镜（透射和扫描），我们确认循环和募集的细胞显示出相似的形态。因此，在螃蟹中，在变性的急性期，血细胞被吸引到病变部位，出现在局部神经胶质细胞附近，这表明有反应的迹象。一些吸引的血细胞显示出可能被激活的血细胞形态。同样，迁移到受伤的PCT的细胞也表现出特征，例如存在水解酶和吞噬神经碎片的能力，类似于脊椎动物。总之，我们的结果表明，血细胞不仅与神经胶质细胞一起吞噬神经碎片，而且还可能与创造有利的事件再生环境有关。

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