Abstract:
:The effects of intracerebral microinjections of neurotensin and xenopsin on self-stimulation of the medial prefrontal cortex of the rat were studied. Unilateral microinjections into the medial prefrontal cortex of neurotensin at doses of 0.625, 1.25, 2.5, 5 and 10 nmol produced a dose-related decrease of self-stimulation in the ipsilateral medial prefrontal cortex. Self-stimulation of the contralateral medial prefrontal contex, used as control, was not affected by the microinjections. Similar results were found with the neurotension-like octapeptide, xenopsin. Unilateral microinjections of xenoposin into the medial prefrontal cortex, at doses of 1.8, 3.6, 7.2 and 14.4 nmol produced a dose-related decrease of self-stimulation of the ipsilateral medial prefrontal cortex. Self-stimulation of the contralateral medial prefrontal cortex was not affected. These results suggest that neurotensin is part of the neurochemical substrate of self-stimulation in this cortical area.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Ferrer JM,Sabater R,Saez JAdoi
10.1016/0014-2999(93)90681-7subject
Has Abstractpub_date
1993-01-26 00:00:00pages
39-45issue
1eissn
0014-2999issn
1879-0712pii
0014-2999(93)90681-7journal_volume
231pub_type
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