Journal article
PRESYNAPTIC ADENOSINE A(2A) RECEPTORS ON SOMA AND CENTRAL TERMINALS OF RAT VAGAL AFFERENT NEURONS
M CASTILLOMELENDEZ, E KRSTEW, AJ LAWRENCE, B JARROTT
BRAIN RESEARCH | ELSEVIER SCIENCE BV | Published : 1994
Abstract
The dorsal vagal complex of the medulla oblongata is a key centre involved in the regulation of numerous autonomic functions, including cardiovascular control. Adenosine has been implicated as a potential neuromodulator of the baroreceptor reflex, and therefore the current study has investigated the presence and characteristics of adenosine receptors on rat vagal afferent neurons. In the nodose-vagal grease gap preparation, the adenosine A2a agonist CGS-21680 evoked a depolarisation only in the presence of the selective adenosine A1 antagonist PACPX. Autoradiography using [3H]NECA (4 nM) with suppression of A1 binding enabled the first visualisation of high affinity adenosine A2 receptors in..
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