News tagged with dopamine
Restless legs syndrome, insomnia and brain chemistry: A tangled mystery solved?
Johns Hopkins researchers believe they may have discovered an explanation for the sleepless nights associated with restless legs syndrome (RLS), a symptom that persists even when the disruptive, overwhelming nocturnal urge ...
Neuroscience
May 07, 2013 |
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Maternal diet sets up junk food addiction in babies, study finds
(Medical Xpress)—Research from the University of Adelaide suggests that mothers who eat junk food while pregnant have already programmed their babies to be addicted to a high fat, high sugar diet by the time they are weaned.
Health
Apr 30, 2013 |
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Dopamine regulates the motivation to act
The widespread belief that dopamine regulates pleasure could go down in history with the latest research results on the role of this neurotransmitter. Researchers have proved that it regulates motivation, causing individuals ...
Neuroscience
Apr 29, 2013 |
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New research examines connection between inflammatory stimulus and Parkinson's disease
Parkinson's disease (PD) is a progressive degenerative disease affecting a person's ability to coordinate and control their muscle movement. What starts out as a tremor in a finger will eventually lead to difficulty in writing ...
Parkinson's & Movement disorders
Apr 23, 2013 |
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A noninvasive avenue for Parkinson's disease gene therapy
Researchers at Northeastern University in Boston have developed a gene therapy approach that may one day stop Parkinson's disease (PD) in it tracks, preventing disease progression and reversing its symptoms. The novelty of ...
Parkinson's & Movement disorders
Apr 21, 2013 |
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Taste of beer, without effect from alcohol, triggers dopamine release in the brain
The taste of beer, without any effect from alcohol itself, can trigger dopamine release in the brain, which is associated with drinking and other drugs of abuse, according to Indiana University School of Medicine ...
Neuroscience
Apr 15, 2013 |
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Breaking down the Parkinson's pathway: How affected brain cells respond during different behavioral tasks
The key hallmark of Parkinson's disease is a slowdown of movement caused by a cutoff in the supply of dopamine to the brain region responsible for coordinating movement. While scientists have understood this ...
Neuroscience
Mar 13, 2013 |
4 / 5 (2) |
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New effort to identify Parkinson's biomarkers
Last month, the National Institutes of Health announced a new collaborative initiative that aims to accelerate the search for biomarkers—changes in the body that can be used to predict, diagnose or monitor a disease—in ...
Parkinson's & Movement disorders
Mar 05, 2013 |
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Drugs may help relieve restless legs syndrome
(HealthDay)—People suffering from restless legs syndrome may find some relief by taking one of several drugs approved to treat the condition, a new review confirms.
Diseases, Conditions, Syndromes
Mar 04, 2013 |
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Group Therapy: New approach to psychosis treatment could target multiple nervous system receptors
Antipsychotic drugs, used in the treatment of psychotic disorders involving severe delusions and hallucinations, have been studied for more than 70 years. Currently available antipsychotic drugs, however, only alleviate certain ...
Psychology & Psychiatry
Feb 01, 2013 |
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Study reveals promising new target for Parkinson's disease therapies
With a new insight into a model of Parkinson's disease, researchers from the University of Pennsylvania School of Veterinary Medicine have identified a novel target for mitigating some of the disease's toll on the brain.
Parkinson's & Movement disorders
Jan 19, 2013 |
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Mouse research links adolescent stress and severe adult mental illness
Working with mice, Johns Hopkins researchers have established a link between elevated levels of a stress hormone in adolescence—a critical time for brain development—and genetic changes that, in young adulthood, cause ...
Neuroscience
Jan 17, 2013 |
5 / 5 (5) |
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Parkinson's treatment can trigger creativity
Parkinson's experts across the world have been reporting a remarkable phenomenon—many patients treated with drugs to increase the activity of dopamine in the brain as a therapy for motor symptoms such as ...
Parkinson's & Movement disorders
Jan 14, 2013 |
4.3 / 5 (4) |
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Dopamine-receptor gene variant linked to human longevity
(Medical Xpress)—A variant of a gene associated with active personality traits in humans seems to also be involved with living a longer life, UC Irvine and other researchers have found.
Neuroscience
Jan 03, 2013 |
3.7 / 5 (3) |
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Many causes for learning lags in tumor disorder
(Medical Xpress)—The causes of learning problems associated with an inherited brain tumor disorder are much more complex than scientists had anticipated, researchers at Washington University School of Medicine ...
Neuroscience
Dec 21, 2012 |
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Dopamine
Dopamine is a neurotransmitter occurring in a wide variety of animals, including both vertebrates and invertebrates. In the brain, this phenethylamine functions as a neurotransmitter, activating the five types of dopamine receptors — D1, D2, D3, D4, and D5, and their variants. Dopamine is produced in several areas of the brain, including the substantia nigra and the ventral tegmental area. Dopamine is also a neurohormone released by the hypothalamus. Its main function as a hormone is to inhibit the release of prolactin from the anterior lobe of the pituitary.
Dopamine can be supplied as a medication that acts on the sympathetic nervous system, producing effects such as increased heart rate and blood pressure. However, because dopamine cannot cross the blood-brain barrier, dopamine given as a drug does not directly affect the central nervous system. To increase the amount of dopamine in the brains of patients with diseases such as Parkinson's disease and dopa-responsive dystonia, L-DOPA (levodopa), which is the precursor of dopamine, can be given because it can cross the blood-brain barrier.
For more information about Dopamine, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
