{"pmid":1,"abstract":[{"text":"It is well known that striatonigral neurons produce substance P (SP); however, no SP receptor (SPR) has so far been found in the substantia nigra. On the other hand, a previous study in the rat striatum indicated that SPR was expressed only in cholinergic or somatostatinergic intrinsic neurons (Kaneko et al. [1993] Brain Res. 631:297-303). Thus, it was assumed that SP produced by striatenigral neurons might be released through their intrastriatal axon collaterals to act upon intrinsic neurons in the striatum. To confirm this assumption, the distribution of axon collaterals of striatonigral neurons was examined in the striatum of the rat. The experiments were performed on brain slices by combining retrograde labeling with tetramethylrhodamine-dextran amine, electrophysiological recording, intracellular staining with biocytin, and immunocytochemistry for SPR. The distribution of axons of cholinergic striatal neurons (a group of SP-negative intrinsic striatal neurons) was also examined. It was observed that 16% of varicosities of intrastriatal axon collaterals of striatonigral neurons, as well as 6% of axonal varicosities of cholinergic neurons, were in close apposition to dendrites and cell bodies of SPB-immunoreactive striatal neurons. Since SPR-immunoreactive striatal neurons constituted only 2.7% of the total population of striatal neurons (Kaneko et al. [1993] Brain Res. 631:297-303), it appeared that axonal varicosities of striatonigral neurons were preferentially apposed to SPR-immunoreactive striatal neurons and that the varicosities in close apposition to SPR-immunoreactive neurons were derived more frequently from striatonigral neurons than from cholinergic interneurons. Confocal laser scanning microscopy indicated that axonal varicosities in close apposition to SPR-immunoreactive cells showed synaptophysin immunoreactivity, a marker of synaptic vesicles. In intrastriatal axons of striatonigral neurons, it was further revealed from electron microscopy that axonal varicosities in close apposition to SPR- immunoreactive dendrites, at least a part of them, made synapses of the symmetric type. Striatonigral neurons might release SP preferentially around cholinergic or somatostatinergic intrinsic neurons to regulate them through SP-SPR interactions.","lang":"eng"}],"oa_version":"None","date_published":"1997-11-17T00:00:00Z","publist_id":"4316","type":"journal_article","publisher":"Wiley-Blackwell","article_type":"original","issue":"2","page":"250 - 264","day":"17","intvolume":" 388","publication_identifier":{"issn":["0021-9967"]},"language":[{"iso":"eng"}],"date_created":"2018-12-11T11:58:30Z","title":"Collateral projections from striatonigral neurons to substance P receptor-expressing intrinsic neurons in the striatum of the rat","article_processing_charge":"No","status":"public","acknowledgement":"The authors are grateful for the photographic help of Mr.A. Uesugi. We also express our gratitude for the support ofDrs. Satoru Fukuchi, Ritsu Hayashi, Sohzaburo Hayashi,Mizuho Katsurada, Hitoshi Kawai, Yutaka Kitani, Toshi-hiko Kuroda, Keiko Kumagai, Hiroshi Matsubara, HiroshiMatsushima, Chisato Minakuchi, Gonpei Niwa, HajimeOda, Masahiko Ohbayashi, Sei-ichi Ohbayashi, Hiroyasu Ohtsuka, Shigeo Tamaki, Eizo Watanabe, Kazuo Yoshino,and Toshiaki Yoshino.","publication_status":"published","scopus_import":"1","volume":388,"extern":"1","citation":{"apa":"Lee, T., Kaneko, T., Shigemoto, R., Nomura, S., & Mizuno, N. (1997). Collateral projections from striatonigral neurons to substance P receptor-expressing intrinsic neurons in the striatum of the rat. Journal of Comparative Neurology. Wiley-Blackwell. https://doi.org/10.1002/(SICI)1096-9861(19971117)388:2<250::AID-CNE5>3.0.CO;2-0","chicago":"Lee, Teffy, Takeshi Kaneko, Ryuichi Shigemoto, Sakashi Nomura, and Noboru Mizuno. “Collateral Projections from Striatonigral Neurons to Substance P Receptor-Expressing Intrinsic Neurons in the Striatum of the Rat.” Journal of Comparative Neurology. Wiley-Blackwell, 1997. https://doi.org/10.1002/(SICI)1096-9861(19971117)388:2<250::AID-CNE5>3.0.CO;2-0.","ama":"Lee T, Kaneko T, Shigemoto R, Nomura S, Mizuno N. Collateral projections from striatonigral neurons to substance P receptor-expressing intrinsic neurons in the striatum of the rat. Journal of Comparative Neurology. 1997;388(2):250-264. doi:10.1002/(SICI)1096-9861(19971117)388:2<250::AID-CNE5>3.0.CO;2-0","short":"T. Lee, T. Kaneko, R. Shigemoto, S. Nomura, N. Mizuno, Journal of Comparative Neurology 388 (1997) 250–264.","ieee":"T. Lee, T. Kaneko, R. Shigemoto, S. Nomura, and N. Mizuno, “Collateral projections from striatonigral neurons to substance P receptor-expressing intrinsic neurons in the striatum of the rat,” Journal of Comparative Neurology, vol. 388, no. 2. Wiley-Blackwell, pp. 250–264, 1997.","ista":"Lee T, Kaneko T, Shigemoto R, Nomura S, Mizuno N. 1997. Collateral projections from striatonigral neurons to substance P receptor-expressing intrinsic neurons in the striatum of the rat. Journal of Comparative Neurology. 388(2), 250–264.","mla":"Lee, Teffy, et al. “Collateral Projections from Striatonigral Neurons to Substance P Receptor-Expressing Intrinsic Neurons in the Striatum of the Rat.” Journal of Comparative Neurology, vol. 388, no. 2, Wiley-Blackwell, 1997, pp. 250–64, doi:10.1002/(SICI)1096-9861(19971117)388:2<250::AID-CNE5>3.0.CO;2-0."},"month":"11","publication":"Journal of Comparative Neurology","_id":"2581","year":"1997","quality_controlled":"1","doi":"10.1002/(SICI)1096-9861(19971117)388:2<250::AID-CNE5>3.0.CO;2-0","author":[{"full_name":"Lee, Teffy","first_name":"Teffy","last_name":"Lee"},{"first_name":"Takeshi","last_name":"Kaneko","full_name":"Kaneko, Takeshi"},{"full_name":"Shigemoto, Ryuichi","id":"499F3ABC-F248-11E8-B48F-1D18A9856A87","last_name":"Shigemoto","orcid":"0000-0001-8761-9444","first_name":"Ryuichi"},{"full_name":"Nomura, Sakashi","first_name":"Sakashi","last_name":"Nomura"},{"full_name":"Mizuno, Noboru","first_name":"Noboru","last_name":"Mizuno"}],"external_id":{"pmid":["9368840"]},"date_updated":"2022-08-22T10:03:38Z","user_id":"ea97e931-d5af-11eb-85d4-e6957dddbf17"}