Neurotensin increases tyrosine hydroxylase messenger RNA-positive neurons in substantia nigra after retrograde axonal transport
Neuroscience, ISSN: 0306-4522, Vol: 49, Issue: 3, Page: 627-633
1992
- 46Citations
- 13Captures
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Metrics Details
- Citations46
- Citation Indexes46
- 46
- CrossRef30
- Captures13
- Readers13
- 13
Article Description
In previous studies we have shown that labelled neurotensin injected into the rat striatum was found to be transported retrogradely in dopaminergic neurons through a process which was receptor and microtubule dependent. Now, we show, by in situ hybridization, the consequences of the striatal injection of neurotensin on the gene expression of tyrosine hydroxylase in the substantia nigra. Rats were injected with neurotensin or its fragments in the striatum of one side and with saline or the inactive fragment on the other. The number of nigral cells expressing tyrosine hydroxylase mRNA was found to increase by 40% after injection of neurotensin or its active fragment (neurotensin 8–13). In the same experimental conditions, the inactive fragment (neurotensin 1–8) was without effect. Time-course experiments revealed that the tyrosine hydroxylase mRNA was increased 4 h after neurotensin injection but not at 1 or 16 h. The fact that the increase of mRNA parallels the appearance of labelled neurotensin in the substantia nigra indicates that the changes in the gene expression of tyrosine hydroxylase might be the consequence of the retrograde axonal transport of neurotensin.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/030645229290232Q; http://dx.doi.org/10.1016/0306-4522(92)90232-q; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0026691248&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/1354339; http://linkinghub.elsevier.com/retrieve/pii/030645229290232Q; http://api.elsevier.com/content/article/PII:030645229290232Q?httpAccept=text/xml; http://api.elsevier.com/content/article/PII:030645229290232Q?httpAccept=text/plain; https://linkinghub.elsevier.com/retrieve/pii/030645229290232Q; http://dx.doi.org/10.1016/0306-4522%2892%2990232-q; https://dx.doi.org/10.1016/0306-4522%2892%2990232-q
Elsevier BV
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