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Antiadrenergic agents inhibit the signals of adrenaline and noradrenaline. They are mainly adrenergic antagonists, inhibiting adrenergic receptors, but there are exceptions: clonidine is an adrenergic agonist on the α2 receptor, since this receptor is located presynaptically to inhibit further release of adrenaline and noradrenaline.
Other ways of inhibiting adrenergic signaling is by catecholamine synthesis blocking, e.g. by methyltyrosine. Reserpine works by inhibiting transport into synaptic vesicles of noradrenaline by inhibiting the VMAT transporter.
Many antiadrenergic agents used as antihypertensives include:
- centrally acting:
- peripherally acting
Receptor agonists, antagonists, and reuptake inhibitors
|5-HT (serotonin) receptor|
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