Relationship between neurokinin-1 receptor and substance P in the striatum: Light and electron microscopic immunohistochemical study in the rat

J. Li, D. Wang, T. Kaneko, R. Shigemoto, S. Nomura, N. Mizuno, Journal of Comparative Neurology 418 (2000) 156–163.

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Abstract
The synaptic relationship between substance P (SP) and its receptor, i.e., neurokinin-1 receptor (NK1R), was examined in the striatum of the rat by confocal laser-scanning microscopy and electron microscopy. For confocal laser-scanning microscopy, triple-immunofluorescence histochemistry was performed to label NK1R, SP, and vesicular acetylcholine transporter (a specific marker for cholinergic neurons). In electron microscopic double- immunolabeling study, immunoreactivity for NK1R was detected with the silver- intensified gold method, while immunoreactivity for SP was detected with peroxidase immunohistochemistry. Simultaneous immunolabeling of NK1R and SP revealed significant mismatch at the synaptic level: although some SP- immunopositive axon terminals were in synaptic contact with NK1R- immunopositive sites of plasma membrane, NK1R-immunoreactivity was observed at both synaptic and non-synaptic sites of plasma membrane. Thus, SP released from the sites remote from NK1Rs might diffuse in the extracellular fluid to act, as a paracrine neurotransmitter, on NK1Rs distant from its releasing site. SP neurotransmission in the striatum might occur not only synaptically but also extrasynaptically. The SP-NK1R system might constitute an association system within the striatum.
Publishing Year
Date Published
2000-03-06
Journal Title
Journal of Comparative Neurology
Volume
418
Issue
2
Page
156 - 163
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Li J, Wang D, Kaneko T, Shigemoto R, Nomura S, Mizuno N. Relationship between neurokinin-1 receptor and substance P in the striatum: Light and electron microscopic immunohistochemical study in the rat. Journal of Comparative Neurology. 2000;418(2):156-163. doi:10.1002/(SICI)1096-9861(20000306)418:2<156::AID-CNE3>3.0.CO;2-Z
Li, J., Wang, D., Kaneko, T., Shigemoto, R., Nomura, S., & Mizuno, N. (2000). Relationship between neurokinin-1 receptor and substance P in the striatum: Light and electron microscopic immunohistochemical study in the rat. Journal of Comparative Neurology, 418(2), 156–163. https://doi.org/10.1002/(SICI)1096-9861(20000306)418:2<156::AID-CNE3>3.0.CO;2-Z
Li, Jin, Dan Wang, Takeshi Kaneko, Ryuichi Shigemoto, Sakashi Nomura, and Noboru Mizuno. “Relationship between Neurokinin-1 Receptor and Substance P in the Striatum: Light and Electron Microscopic Immunohistochemical Study in the Rat.” Journal of Comparative Neurology 418, no. 2 (2000): 156–63. https://doi.org/10.1002/(SICI)1096-9861(20000306)418:2<156::AID-CNE3>3.0.CO;2-Z.
J. Li, D. Wang, T. Kaneko, R. Shigemoto, S. Nomura, and N. Mizuno, “Relationship between neurokinin-1 receptor and substance P in the striatum: Light and electron microscopic immunohistochemical study in the rat,” Journal of Comparative Neurology, vol. 418, no. 2, pp. 156–163, 2000.
Li J, Wang D, Kaneko T, Shigemoto R, Nomura S, Mizuno N. 2000. Relationship between neurokinin-1 receptor and substance P in the striatum: Light and electron microscopic immunohistochemical study in the rat. Journal of Comparative Neurology. 418(2), 156–163.
Li, Jin, et al. “Relationship between Neurokinin-1 Receptor and Substance P in the Striatum: Light and Electron Microscopic Immunohistochemical Study in the Rat.” Journal of Comparative Neurology, vol. 418, no. 2, Wiley-Blackwell, 2000, pp. 156–63, doi:10.1002/(SICI)1096-9861(20000306)418:2<156::AID-CNE3>3.0.CO;2-Z.

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