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首页> 外文期刊>Cell and Tissue Research >The nervous system component of the mesentery of the sea cucumber Holothuria glaberrima in normal and regenerating animals
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The nervous system component of the mesentery of the sea cucumber Holothuria glaberrima in normal and regenerating animals

机译：海参的神经系统成分在正常和再生动物中海参Holothuria Glaberrima的神经系统成分

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The mesenterial tissues play important roles in the interactions between the viscera and the rest of the organism. Among these roles, they serve as the physical substrate for nerves connecting the visceral nervous components to the central nervous system. Although the mesenterial nervous system component has been described in vertebrates, particularly in mammals, a description in other deuterostomes is lacking. Using immunohistochemistry in tissue sections and whole mounts, we describe here the nervous component of the intestinal mesentery in the sea cucumber Holothuria glaberrima. This echinoderm has the ability to regenerate its internal organs in a process that depends on the mesentery. Therefore, we have also explored changes in the mesenterial nervous component during intestinal regeneration. Extensive fiber bundles with associated neurons are found in the mesothelial layer, extending from the body wall to the intestine. Neuron-like cells are also found within a plexus in the connective tissue layer. We also show that most of the cells and nerve fibers within the mesentery remain during the regenerative process, with only minor changes: a general disorganization of the fiber bundles and a retraction of nerve fibers near the tip of the mesentery during the first days of regeneration. Our results provide a basic description of mesenterial nervous component that can be of importance for comparative studies as well as for the analyses of visceral regeneration.
机译：肠系膜组织在内脏和其余的生物之间的相互作用中起重要作用。在这些作用中，它们用作神经的物理底物，用于将内脏神经成分连接到中枢神经系统。虽然已在脊椎动物中描述了肠系膜神经系统组分，但特别是在哺乳动物中，缺乏其他氘前跖的描述。在组织切片和整个安装座中使用免疫组织化学，我们在这里描述了海参Holothuria Glaberrima的肠肠系膜的神经成分。这种棘突具有在取决于肠系膜的过程中再生其内脏器官的能力。因此，我们还在肠道再生期间探讨了肠系膜神经组分的变化。在间皮层中发现具有相关神经元的广泛纤维束，从体壁延伸到肠道。内核状细胞也发现在结缔组织层中的丛中。我们还表明，肠膜内的大多数细胞和神经纤维在再生过程中仍然存在，只有轻微的变化：纤维束的一般混乱以及在再生的第一天内肠系膜尖端附近的神经纤维的缩回。我们的结果提供了肠系膜神经组分的基本描述，对比较研究以及内脏再生的分析可能具有重要性。

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