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Abnormal dopamine receptor signaling and dopaminergic nerve function is implicated in several neuropsychiatric disorders. [1] Dopamine receptors are therefore common drug targets. Dopamine receptors activate different effectors through not only G-protein coupling, but also signaling through different protein (dopamine receptor-interacting ...
The mechanisms of sympathomimetic drugs can be direct-acting (direct interaction between drug and receptor), such as α-adrenergic agonists, β-adrenergic agonists, and dopaminergic agonists; or indirect-acting (interaction not between drug and receptor), such as MAOIs, COMT inhibitors, release stimulants, and reuptake inhibitors that increase the levels of endogenous catecholamines.
Bromocriptine is a D 2 receptor agonist and D 1 receptor antagonist with a binding affinity to D 2 receptors of anterior pituitary cells, exclusively on lactotrophs. Bromocriptine stimulates Na +, K +-ATPase activity and/or cytosolic Ca 2+ elevation and therefore reduction of prolactin which leads to no production of cAMP.
This is a list of adrenergic drugs. These are pharmaceutical drugs , naturally occurring compounds and other chemicals that influence the function of the neurotransmitter epinephrine (adrenaline). Receptor ligands
Stimulants (also known as central nervous system stimulants, or psychostimulants, or colloquially as uppers) are a class of drugs that increase the activity of the brain. They are used for various purposes, such as enhancing alertness , attention , motivation , cognition , mood , and physical performance .
Alpha-adrenergic agonists are a class of sympathomimetic agents that selectively stimulates alpha adrenergic receptors. The alpha-adrenergic receptor has two subclasses α 1 and α 2. Alpha 2 receptors are associated with sympatholytic properties. Alpha-adrenergic agonists have the opposite function of alpha blockers.
Some drugs do not appear to increase motivation and can actually have anti-motivational effects. [4] [13] [19] Examples of these drugs include selective serotonin reuptake inhibitors (SSRIs), [19] [20] [21] selective norepinephrine reuptake inhibitors (NRIs), [19] and antipsychotics (which are dopamine receptor antagonists or partial agonists).
The drugs that enter an individual tend to stimulate certain receptors, ion channels, act on enzymes or transport proteins. As a result, they cause the human body to react in a specific way. Based on drug action on receptors, there are 2 different types of drugs: Agonists – they stimulate and activate the receptors