Mapping of octopamine-immunoreactive neurons in the central nervous system of the lobster.
Mapping of octopamine-immunoreactive neurons in the central nervous system of the lobster.
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龙虾中枢神经系统中章鱼胺免疫反应神经元的定位。
DOI：
10.1002/cne.903290109
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Kravitz,EA
中科院分区：
文献类型：
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作者：
Schneider,H;Trimmer,BA;Rapus,J;Eckert,M;Valentine,DE;Kravitz,EA
已有研究表明，5-羟色胺和章鱼胺在龙虾的行为调节中起着重要作用。本文对四期美国龙虾(Homarus Americanus)幼体腹侧神经索的整层标本进行了章鱼胺免疫反应神经元定位。共发现约86个神经元，分布如下：脑12个，食道周围神经节2个，食道下神经节38个，胸神经节6个，第4腹节和第5腹神经节各2个。所有章鱼胺免疫反应神经元都成对分布在中线上。在86个神经元中，28个为神经内分泌型，26个为节段间上胸、上腹部或下行中间神经元。神经分泌系统呈节段性分布，完全位于胸神经和食道下神经节内，沿着第二胸神经根和食道下神经根有广泛的终末野。这组神经元具有中枢和外周终末的特征，在第五胸神经节和第一腹部神经节中发现了两对大型的含5-羟色胺的神经分泌神经元。节间神经元包括：(1)脑中的两个细胞和食道下神经节的第3和第4神经节中的2对细胞，投射到第6腹神经节；(2)在食道下神经节和整个胸神经节中发现的一组节段性组织的上行内神经元；(3)在腹神经索的第4和第5神经节中发现的一对上行中间神经元。用生物化学方法，发现脊髓胸段章鱼胺免疫反应神经分泌细胞胞体含有40~100fmol章鱼胺，而对照神经元没有章鱼胺。©1993 Wiley-Liss，Inc.
It has been suggested that serotonin and octopamine serve important roles in behavioral regulation in lobsters. In this paper the locations of octopamine‐immunoreactive neurons were mapped in wholemount preparations of the ventral nerve cord of 4th stage lobster (Homarus americanus) larvae. Approximately 86 neurons were found, distributed as follows: brain, 12; circumesophageal ganglia, 2; subesophageal ganglion, 38; thoracic ganglia, 6 each; and 4th and 5th abdominal ganglia, 2 each. All the octopamine‐immunoreactive neurons are paired and located along the midline. Of the 86 neurons, 28 were identified as neurosecretory, and 26 as intersegmental ascending thoracic, ascending abdominal, or descending interneurons. The neurosecretory system is arranged segmentally and located entirely within the thoracic and subesophageal neuromeres with extensive terminal fields of endings along 2nd thoracic and subesophageal nerve roots. This set of neurons shares the features of central and peripheral endings with 2 pairs of large serotonin‐containing neurosecretory neurons found in the fifth thoracic and first abdominal ganglia. The intersegmental neurons include: (1) two cells in the brain and 2 pairs of cells in the 3rd and 4th neuromeres of the subesophageal ganglion, which project to the 6th abdominal ganglion; (2) a segmentally organized group of ascending internurons found in the subesophageal and in all thoracic ganglia; and (3) pairs of ascending interneurons found in the 4th and 5th ganglia in the abdominal nerve cord. By means of a biochemical assay, the cell bodies of octopamine‐immunoreactive neurosecretory cells in the thoracic segment of the nerve cord were found to contain 40–100 fmol of octopamine, while control neurons had none. © 1993 Wiley‐Liss, Inc.