Gourt > Health > Pharmacy > Drugs and Medications > N > Norepinephrine
Norepinephrine (INN) or noradrenaline (BAN) is a catecholamine and a phenethylamine with chemical formula C8H11NO3. The natural stereoisomer is L-(−)-(R)-norepinephrine. It is released from the medulla of the adrenal glands as a hormone into the blood, but it is also a neurotransmitter in the nervous system where it is released from noradrenergic neurons during synaptic transmission. As a stress hormone, it affects parts of the human brain where attention and impulsivity are controlled. Along with epinephrine, this compound affects the fight-or-flight response, activating the sympathetic nervous system to directly increase heart rate, release energy from fat, and increase muscle readiness.
The host of physiological changes activated by a stressful event are unleashed in part by activation of a nucleus in the brain stem called the locus ceruleus. This nucleus is the origin of most norepinephrine pathways in the brain. Neurons using norepinephrine as their neurotransmitter project bilaterally from the locus ceruleus along distinct pathways to the cerebral cortex, limbic system, and the spinal cord, among other projections.
At synapses it acts on both alpha and beta adrenoreceptors.
More on [ Norepinephrine ]
Droxidopa, an investigational norepinephrine pro-drug, reduced symptoms of neurogenic orthostatic hypotension in Parkinson's patients
elena_ivanina (elena ivanina) Thu, 17 Dec 2009 14:12:48 -0000
Droxidopa, an investigational norepinephrine pro-drug, reduced symptoms of neurogenic orthostatic hypotension in Parkinson's patients
Neurotransmitters and Sex (!!!) - Norephinephrine before. Dopamine during. Endorphins after. Norepinephrine... http://tumblr.com/xaj4r425h
thepatdes (Patricia Descallar) Thu, 17 Dec 2009 11:37:44 -0000
Neurotransmitters and Sex (!!!) - Norephinephrine before. Dopamine during. Endorphins after. Norepinephrine... http://tumblr.com/xaj4r425h
@fibroaction Norepinephrine is first & is what causes the feeling. However, NE is a precursor of dopamine, so it raises that as well.
fibroadrienne (Adrienne Dellwo) Thu, 17 Dec 2009 05:55:53 -0000
@fibroaction Norepinephrine is first & is what causes the feeling. However, NE is a precursor of dopamine, so it raises that as well.
Serotonin & norepinephrine are td's drugs of choice
shawneeArchacki (Jolyn Spar) Thu, 17 Dec 2009 05:16:30 -0000
Serotonin & norepinephrine are td's drugs of choice
MOA of Methyldopa (Aldomet): stimulates central presynaptic alpha-2-adrenergic receptors and inhibits the release of norepinephrine.
score95com (Score95.com) Wed, 16 Dec 2009 22:02:04 -0000
MOA of Methyldopa (Aldomet): stimulates central presynaptic alpha-2-adrenergic receptors and inhibits the release of norepinephrine.
@Notoriouskitsch Apparently it's the dopamine & norepinephrine we crave in cheese... Don't ask! All I know is life ain't the same without it
BartonAndBarton (Vintage Clothing) Wed, 16 Dec 2009 20:23:47 -0000
@Notoriouskitsch Apparently it's the dopamine & norepinephrine we crave in cheese... Don't ask! All I know is life ain't the same without it
| A Story About Cocaine: | |
| Next Video | |
