The prokinetic effect of metoclopramide is mediated through the blockade of enteric (neuronal and muscular) inhibitory dopamine D2 receptors, and metoclopramide has the ability to stimulate 5-HT3 and 5-HT4 receptors (2). Metoclopramide also exerts inhibitory effects on D2 receptors centrally (located outside the blood-brain barrier), and these contribute to its antiemetic effect. Metoclopramide...

ion fluxes in these cells, we have now examined the possibility that the decrease in beta receptor number might be associated with concomitant changes in catecholamine-dependent potassium ion transport. Hypothyroid turkey erythrocytes display decreased sensitivity to isoproterenol-stimulated potassium influx. Half-maximal stimulation of potassium influx occurs at 9.2±+1.7 nM in hypothyroid cell...

Objective - to study, the dynamics of catecholamine binding on erythrocytes when modeling stimulation and blockade adrenergic regulation mechanisms using cytological method
 Material methods. The number granules was determined silver nitrate impregnation under conditions administration anapriline -adrenergic receptor blocker (2 mg/kg), acute stress, activation noradrenergic systems (maprot...

Previous studies performed with crude homogenates have demonstrated the presence of beta-adrenergic receptors in the rat ventral prostate. The precise localization of these receptors in prostatic tissue, however, has not been determined. The present study describes the localization of beta-adrenergic receptors using in vitro radioautography. beta-adrenergic receptors are present exclusively in ...

Different classes of receptors mediate norepinephrine and epinephrine effects, one of the most recently discovered being the beta 3 adrenergic ones. The paper has proposed itself to present the history of the discovery of beta 3 adrenergic receptors, different techniques for their identification, their structure, localization, genetic data and also the mechanism of regulation of their functions...

Norepinephrine regulates latent neural stem cell activity and adult hippocampal neurogenesis, and has an important role in modulating hippocampal functions such as learning, memory and mood. Adult hippocampal neurogenesis is a multi-stage process, spanning from the activation and proliferation of hippocampal stem cells, to their differentiation into neurons. However, the stage-specific effects ...

To elucidate the mechanisms responsible for the increase in a,-adrenergic receptors during ischemia in vivo, we developed a procedure for measuring a,-adrenergic receptors in isolated, calcium-tolerant adult canine myocytes. Specific pH]prazosin binding was rapid, saturable, reversible, and demonstrated the expected order of potency and stereospecificity for the a,-adrenergic receptor. Myocytes...

The pattern of cardiac beta-adrenergic receptor changes in different hypertrophy models varies according to the pathophysiology. In salt-sensitive Dahl rats, high dietary salt intake leads to a moderate degree of cardiac hypertrophy associated with increased numbers of cardiac beta-adrenergic receptors but unchanged affinity for agonists. Isoproterenol-stimulated cardiac adenylate cyclase is al...

To elucidate the mechanisms responsible for the increase in alpha 1-adrenergic receptors during ischemia in vivo, we developed a procedure for measuring alpha 1-adrenergic receptors in isolated, calcium-tolerant adult canine myocytes. Specific [3H]prazosin binding was rapid, saturable, reversible, and demonstrated the expected order of potency and stereospecificity for the alpha 1-adrenergic re...

The development of experimental deoxycorticosterone-salt (DOCA-salt) and renal artery clip hypertension in rats is associated with alterations in the sensitivity of the myocardium to adrenergic stimulation. We studied beta-adrenergic receptors and isoproterenol-stimulated adenylate cyclase in myocardial membranes from hypertensive rats to determine whether this altered sensitivity is associated...