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Doctor insights on: Dopamine Plasma

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Plasma (Definition)

It is the fluid portion of both the blood and lymph system in which the ...Read more


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What is plasma acth cortisol response?

What is plasma acth cortisol response?

Test adrenal fxn.: This test is to check on whether or not your adrenal glands are working right. The acth action is to increase production and release of corticosteroids. In the test, a small amount of synthetic acth is injected and the amount of cortisol the adrenals produce in response is measured. This is used to check for things like primary and secondary adrenal insufficiency, and addison's disease. ...Read more

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What is plasma osmolarity? Plasma osmolality?

What is plasma osmolarity? Plasma osmolality?

Conc. electrolytes.: These refer to the concentration of electrolytes in the body/plasma, or the electrolyte-water balance. These measure the same thing, only that osmolality is the number of osmoles per kilogram of solvent or osm/kg, while osmolarity is the number of osmoles per liter of solution or osm/ltr. Osmolality excludes the solute, while osmolarity includes it, so osmolality has a slightly higher reading. ...Read more

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Do only dopaminergic neurons release dopamine?

Do only dopaminergic neurons release dopamine?

Yes: Yes, only dopaminergic neurons release dopamine, but there are several dopaminergic pathways in the brain. Dopaminergic neurons in midbrain are the main source of Dopamine in the mammalian cns. Losing these is associated with parkinson's disease. Dopamine neurons are involved with voluntary movement and other behavioral processes such as mood, reward, addiction, psychosis, and stress. ...Read more

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What is the difference between plasma renin activity (pra) vs plasma renin concentration (prc)?

What is the difference between plasma renin activity (pra) vs plasma renin concentration (prc)?

See below:: Not all proteins are functionally active, especially in the case of enzymes. Discordance between renin concentration (prc) and renin activity (pra) allows detection of adrenal tumors. See this site for more info. http://www.ncbi.nlm.nih.gov/pubmed/15080782. ...Read more

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What is the acth plasma stimulation test?

What is the acth plasma stimulation test?

Inject syn. ACTH: Hi. It's a test for primary adrenal insufficiency (where the adrenal glands themselves have failed) where synthetic ACTH(1-24), the N-terminal 24 amino acid peptide of native ACTH, is injected IV, and the adrenal response in making cortisol is measured at 0, 30, and 60 minutes. Dead adrenals don't respond. The ACTH-stim test does not reliably test for pituitary disease. ...Read more

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What is the acth plasma stimulation test?

What is the acth plasma stimulation test?

ACTH: ACTH is Adrenocortic hormone that is produced in the pituitary gland and stimulates the adrenal glands. If things are OK the labs will be fine. If not you will told how to take care of any hormone problems. ...Read more

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What is plasma acth?

Pituitary hormone: Hi. ACTH is a hormone from the pituitary gland that travels by the bloodstream to the adrenal glands and stimulates cortisol production (and to a lesser extent, aldosterone). The cortisol feeds back to the pituitary to regulate ACTH release (also effects on hypothalamic CRH, but we'll keep it simple). ACTH positive feedforward & cortisol negative feedback works beautifully. Diseases can affect it. ...Read more

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What substances interfere with the plasma metanephrine test? 

What substances interfere with the plasma metanephrine test? 

Metanephrine: You should discontinue Epinephrine and epinephrine-like drugs for at least 1 week before the test, stop using Acetaminophen 48 hours beforehand, and fast for 8-10 hours prior to collection. It is especially important not to have any caffeine containing food (soda, chocolate), coffee (including decaf), tobacco (smoking cigarettes or cigars), tea, or alcohol for at least 4 hours before specimen coll. ...Read more

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Sine seratonin depletes other nerotransmitters like dopamine, norepinephrine, and epinephrine...By "deplete" does it mean a permanent thing?

Sine seratonin depletes other nerotransmitters like dopamine, norepinephrine, and epinephrine...By "deplete" does it mean a permanent thing?

Not correct: Serotonin does not deplete other neurotransmitters, but there is a balance especially between Dopamine and serotonin. This balance is dynamic and constantly re-establishing itself. Unless there is damage to neurons (which there can be when abusing certain drugs) neurotransmitter changes would not be permanent. ...Read more

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Can taking bovine colostrum increase plasma immunoglobulin levels, thereby masking an underlying immunoglobulin deficiency by altering blood tests?

Can taking bovine colostrum increase plasma immunoglobulin levels, thereby masking an underlying immunoglobulin deficiency by altering blood tests?

Unlikely: Very thoughtful idea. Unfortunately, the bovine immunoglobins are too large to be absorbed from the intestine and would be digested by stomach and intestinal juices and enzymes. With use you would be providing body with raw materials for making your own immunoglobulins, but at a cost. Any "complete" proteins from eggs or milk could provide the same protein precursors and support good health. ...Read more

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Does Effexor (venlafaxine) raise shbg (sex hormone binding gobulin) levels?

Does Effexor (venlafaxine) raise shbg (sex hormone binding gobulin) levels?

Interesting question: I have not found any publications specifically studying this question. Antipsychotics and Prozac (fluoxetine) can affect prolactin, potentially changing sex hormone levels. This may or may not relate to shbg levels, though. I did find one small (20 patients) study online concerning low testosterone levels and antidepressant-induced sexual dysfunction: http://tinyurl.Com/mk84cfr further research needed. ...Read more

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Does dopamite(dopamine supplement) increase more dopamine level or prescribed medicine like biperiden(dopamine reuptake inhibitor) does?

Does dopamite(dopamine supplement) increase more dopamine level or prescribed medicine like biperiden(dopamine reuptake inhibitor) does?

I'm curious: Why do you believe you need to take medication that claims to affect dopamine, especially OTC remedy which will NOT cross the brain-blood barrier? If you are depressed, you could see a psychiatrist, and if you have Parkinson's disease, a neurologist. ...Read more

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Does coffee affects the levels of serotonin, noradrenaline and dopamine ?

Does coffee affects the levels of serotonin,  noradrenaline and dopamine ?

Yes: The caffeine in coffee blocks Adenosine receptors, which when activated make you tired and sleepy. This blockade also affects all major neurotransmitters, such as dopamine, acetylcholine, serotonin -- and in high doses, norepinephrine too. Dopamine effects are not in the exact same regions of the brain that other addictive substances affect, though. ...Read more

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Does exercise increase serotonin by stimulating the uptake of tryptophan by brain synaptosomes(sze py.1976)?

Does exercise increase serotonin by stimulating the uptake of tryptophan by brain synaptosomes(sze py.1976)?

Stress does: That paper describes increased uptake of tryptophan caused by glucocorticoids. If you stress yourself while exercising, you might get some increase in the uptake, however, direct connection between tryptophan uptake and exercise was not described. ...Read more

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Blood work showed supine norepinephrine 183pg/ml, epinephrine 11, dopac 1204, dopa 2339; standing norep 639, epi 121, dopac 1099, dopa 1992, normal?

Blood work showed supine norepinephrine 183pg/ml, epinephrine 11, dopac 1204, dopa 2339;  standing norep 639, epi 121, dopac 1099, dopa 1992, normal?

Catecholamine levels: Not sure why you have done these levels, please provide the context, if elevated they suggest an hyper catecholamine state, adrenal tumor etc. ...Read more

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Is plasma cell myeloma hereditary?

Is plasma cell myeloma hereditary?

Majority Not: Majority of myeloma cases is not hereditary. A small but unknown fraction of cases are familial. The risk of developing myeloma is approximately 3.7-fold higher for persons with a first degree relative with myeloma. ...Read more

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Dr. Martin Johnson
905 doctors shared insights

Dopamine (Definition)

Dopamine is an inotrope which is a kind of heart ...Read more