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交配过的和未交配过的杜氏泡螺（软体动物：肺螺亚纲）大脑中的多巴胺能神经元及蛋白腺的多巴胺能神经支配

Dopaminergic neurons in the brain and dopaminergic innervation of the albumen gland in mated and virgin helisoma duryi (mollusca: pulmonata).

作者信息

Kiehn L, Saleuddin S, Lange A

机构信息

Department of Biology, York University, Toronto, Ontario, M3J1P3, Canada.

出版信息

BMC Physiol. 2001;1:9. doi: 10.1186/1472-6793-1-9. Epub 2001 Aug 1.

DOI:10.1186/1472-6793-1-9
PMID:11513757
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC37538/
Abstract

BACKGROUND

Dopamine was shown to stimulate the perivitelline fluid secretion by the albumen gland. Even though the albumen gland has been shown to contain catecholaminergic fibers and its innervation has been studied, the type of catecholamines, distribution of fibers and the precise source of this neural innervation has not yet been deduced. This study was designed to address these issues and examine the correlation between dopamine concentration and the sexual status of snails.

RESULTS

Dopaminergic neurons were found in all ganglia except the pleural and right parietal, and their axons in all ganglia and major nerves of the brain. In the albumen gland dopaminergic axons formed a nerve tract in the central region, and a uniform net in other areas. Neuronal cell bodies were present in the vicinity of the axons. Dopamine was a major catecholamine in the brain and the albumen gland. No significant difference in dopamine quantity was found when the brain and the albumen gland of randomly mating, virgin and first time mated snails were compared.

CONCLUSIONS

Our results represent the first detailed studies regarding the catecholamine innervation and quantitation of neurotransmitters in the albumen gland. In this study we localized catecholaminergic neurons and axons in the albumen gland and the brain, identified these neurons and axons as dopaminergic, reported monoamines present in the albumen gland and the brain, and compared the dopamine content in the brain and the albumen gland of randomly mating, virgin and first time mated snails.

摘要

背景

多巴胺被证明可刺激蛋白腺分泌卵周液。尽管已经证明蛋白腺含有儿茶酚胺能纤维并对其神经支配进行了研究，但儿茶酚胺的类型、纤维分布以及这种神经支配的确切来源尚未推断出来。本研究旨在解决这些问题，并研究多巴胺浓度与蜗牛性状态之间的相关性。

结果

除胸膜和右顶叶外，在所有神经节中均发现多巴胺能神经元，其轴突存在于所有神经节和脑的主要神经中。在蛋白腺中，多巴胺能轴突在中央区域形成一条神经束，在其他区域形成均匀的网络。神经元细胞体存在于轴突附近。多巴胺是脑和蛋白腺中的主要儿茶酚胺。比较随机交配、未交配和首次交配蜗牛的脑和蛋白腺时，未发现多巴胺量有显著差异。

结论

我们的结果代表了关于蛋白腺中儿茶酚胺神经支配和神经递质定量的首次详细研究。在本研究中，我们在蛋白腺和脑中定位了儿茶酚胺能神经元和轴突，将这些神经元和轴突鉴定为多巴胺能，报告了蛋白腺和脑中存在的单胺，并比较了随机交配、未交配和首次交配蜗牛的脑和蛋白腺中的多巴胺含量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6fcd/37538/a9decdf1e8c9/1472-6793-1-9-12.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6fcd/37538/a9decdf1e8c9/1472-6793-1-9-12.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6fcd/37538/0bb476d2cbb1/1472-6793-1-9-8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6fcd/37538/e8f4497d4afd/1472-6793-1-9-9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6fcd/37538/e1b1a21f56d4/1472-6793-1-9-10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6fcd/37538/3ed9f96c8dee/1472-6793-1-9-11.jpg
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