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Extrahypothalamic Projection of Immunoreactive Vasotocin Fibers in the Brain of the Toad, Bufo japonicus

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Title: Extrahypothalamic Projection of Immunoreactive Vasotocin Fibers in the Brain of the Toad, Bufo japonicus
Authors: Jokura, Yoji Browse this author
Urano, Akihisa Browse this author
Issue Date: 1987
Publisher: Zoological Society of Japan
Journal Title: Zoological Science
Volume: 4
Start Page: 675
End Page: 681
Abstract: Extrahypothalamic projection of vasotocin (AVT) fibers in the brain of the toad (Bufo japonicus) was examined immunohistochemically by the avidin-biotin-peroxidase complex (ABC) method. Immunoreactive AVT perikarya are localized in the nucleus preopticus pars magnocellularis. The AVT neurons send their immunoreactive varicose fibers to many discrete brain regions, such as the limbic cortex, the thalamus, the optic tectum and the lower brain stem, in addition to the neurohypophysis. A dense network of AVT fibers was found in the septal nuclei and the anterior part of the preoptic nucleus. AVT fibers which run postero-dorsad project to the nucleus posterocentralis thalami, the nucleus posterodorsalis tegmenti mesencephali, and the nucleus isthmi. Meanwhile, AVT fibers which run through in the dorsal infundibular region and then the mesencephalic reticular formation are distributed in the medulla oblongata. These findings suggest that AVT acts as a neuromodulator or a local hormone in the toad brain.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 浦野 明央

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