Dictionary » D » Dopamine



(Science: drug) a catecholamine neurotransmitter and hormone (153 D), formed by decarboxylation of dehydroxyphenylalanine (dopa). a precursor of adrenaline and noradrenaline.

pharmacologic action: 1. Precursor of norepinephrine 2. Stimulates dopaminergic, alpha and beta-1 adrenergic receptors: 3. Dopaminergic (1-2 mcg/kg per min): cerebral, renal, and mesenteric vasodilation increase urine output 4. Mixed alpha and beta-1 (2-10 mcg/kg per min): increases cardiac ouput with moderate increase systemic vascular resistance 5. Predominantly alpha (

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Is thiamin (thiamine) amine or not?

Examples of amines in the Merriam-Webster dictionary include dopamine and histamine, in both of which, amino group is attached to a carbohydrate chain, not to the ring. Yes, in thiamin, NH2 is attached directly to the ring.

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by boron
Fri Jan 23, 2015 11:08 am
Forum: Human Biology
Topic: Is thiamin (thiamine) amine or not?
Replies: 2
Views: 1521

Beet Root Pigment

... to synthesize and donate methyl groups (CH3) for other processes in the body. These processes include the synthesis of neurotransmitters such as dopamine, serotonin. Methylation is also required for the biosynthesis of melatonin and the electron transport chain constituent coenzyme Q10.

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by jinx25
Mon Oct 08, 2012 2:54 am
Forum: General Discussion
Topic: Beet Root Pigment
Replies: 7
Views: 5006

Dopamine Question

increased dopamine does not necessarily mean a person will get high right? I dont know the reasons why though

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by iamzlatan
Thu Oct 04, 2012 8:18 pm
Forum: General Discussion
Topic: Dopamine Question
Replies: 0
Views: 814

Neurons, Cocaine, and Shingles

1. While under the influence of cocaine, some users report prolonged feelings of pleasure because dopamine a) reduces the refractory period of neurons b) remains in the synapse longer than normal c) increases the speed of nerve impulse transmission d) diffuses rapidly throughout ...

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by homeworkdisaster
Sun Jun 10, 2012 8:11 pm
Forum: Human Biology
Topic: Neurons, Cocaine, and Shingles
Replies: 4
Views: 5395

Nervous system

... side of the body cross over to the other brain hemisphere at the region of the pons. Some other sources, identify the cross over in the medulla. 3.Dopamine and serotonin are neurotransmitters produced by certain neurons in the brain. One effect of dopamine is that it brings about feelings of euphoria ...

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by Catherine89
Sun Feb 05, 2012 7:22 pm
Forum: Human Biology
Topic: Nervous system
Replies: 0
Views: 5044
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