Abstract:
:We administered a series of alpha-blocking drugs to the nucleus reticularis lateralis (NRL) of the medulla oblongata, the main site for the hypotensive action of clonidine. These experiments were performed on pentobarbital anaesthetized cats. Drugs were injected through a needle which was stereotaxically inserted. Prazosin (6 nmol) was hypertensive (MBP = +25 +/- 8%), corynanthine had no effect and AR-C239 (7 nmol), another alpha 1-blocker, was hypotensive (MBP = -16 +/- 3.5%). The alpha 2-blockers, yohimbine and idaxozan, were hypotensive. The blood pressure effects of alpha-blocking drugs directly microinjected in the nucleus reticularis lateralis cannot be simply related to their selectivity for a particular subtype of alpha-receptors.
journal_name
Life Scijournal_title
Life sciencesauthors
Bousquet P,Feldman Jdoi
10.1016/0024-3205(87)90566-2subject
Has Abstractpub_date
1987-03-16 00:00:00pages
1045-52issue
11eissn
0024-3205issn
1879-0631pii
0024-3205(87)90566-2journal_volume
40pub_type
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