norepinephrine
Noun
Meaning
a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
Source: WordNetSynonyms
Hypernyms
Phrases with the word
Examples
Adrenergic receptors, again, play a key role in this symptom, as altered norepinephrine (an adrenoceptor agonist) neurotransmission contribute to the etiology of depression.
Additionally, noradrenergic CNS hyperactivity may play a role as CNS norepinephrine concentrations are increased in serotonin syndrome and levels appear to correlate with the clinical outcome.
Based upon neuronal TAAR1 mRNA expression, amphetamine is thought to affect norepinephrine analogously to dopamine.
Antidepressants Antidepressants reduce symptoms of mood disorders primarily through the regulation of norepinephrine and serotonin (particularly the 5-HT receptors ).
Fainting can occur but usually baroreceptors within the aortic sinuses initiate a baroreflex such angiotensin II and norepinephrine stimulate vasoconstriction and heart rate increases to return blood flow.
Approximately 20% noradrenaline (norepinephrine) and 80% adrenaline (epinephrine) are secreted here.