Vol. 273, Issue 5, R1567-R1568, November 1997
INVITED REVIEW
Thomas E.
Lohmeier
Department of Physiology and
Biophysics University of Mississippi Medical Center Jackson,
Mississippi 39211
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ARTICLE |
The antihypertensive effects of clonidine and related
drugs, such as moxonidine and rilmenidine, are believed to be mediated primarily by actions on the central nervous system that inhibit sympathetic outflow. The central actions of clonidine-like agents are
generally ascribed to stimulation of medullary
2-adrenergic receptors. However, recent studies have
implicated a newly characterized class of imidazoline receptors as
playing a role in mediating the sympathoinhibition and hypotension
induced by these compounds. Because of the controversial nature of this
topic, the following investigators have been asked to express their
views on the "role of imidazoline receptors in the central
cardiovascular effects of clonidine-like agents." The first article
by Drs. D. J. Reis and J. E. Piletz provides a brief background for
this topic. The subsequent articles by Drs. P. Ernsberger and M. Haxhui
and by Dr. P. Guyenet express their arguments for and against,
respectively, central imidazoline receptor-mediated mechanisms that
impact on cardiovascular function.
AJP Regul Integr Compar Physiol 273(5):R1567-R1568