Dopamine
Hormone
Findings That Should Speed The Development Of Drugs For Parkinson's DiseaseArticle Date: 19 Nov 2009 - 5:00 PST Australian scientists have significantly advanced our understanding of dopamine release from nerve cells, findings that should speed the development of more effective drugs for treating Parkinson's... In this article: Dopamine, Parkinson's disease, Medical advice, Garvan Institute of Medical Research, Tremor, and Sydney |
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New Kerala | 3 days ago
New discovery can speed up development of Parkinson's drugs
...tremor, a slowing of physical movement and, in extreme cases, a loss of physical movement. These primary symptoms are caused by the loss of dopamine producing nerve cells in the brain. Medicines used for treating Parkinson's either provide...
In this article: Parkinson's disease, Garvan Institute of Medical Research, Tremor, Sydney, and Washington
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Life123 | 4 days ago
The Stages of Parkinson's
...and muscle control. What Is Parkinson's Disease? Parkinson's Disease causes a deficiency in the amount of dopamine in the brain. Dopamine controls nerve signals in your brain that are responsible for movement; if there isn't enough...
In this article: Parkinson's disease and Tremor
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The History of Parkinson's Disease
...then those without Parkinson's. The tests showed that Parkinson's patients suffered from a low level of dopamine in the brain. This low level of dopamine caused the nerve cells in the region of the brain known as the substantia nigra to...
In this article: James Parkinson, Parkinson's disease, Jean Martin Charcot, Arvid Carlsson, Degenerative disease, Levodopa, Michael J. Fox Foundation, and London
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Telegraph.co.uk - UK news | 6 days ago
Desire in a pill the drug that boosts a woman's libido
...had lost interest in sex. Researchers have hailed it as a potential "Viagra for women". The drug mimics serotonin and a certain forms of dopamine which are substances produced naturally in the body connected with mood, reward, and...
In this article: Flibanserin, Viagra, Antidepressant, Hypoactive Sexual Desire Disorder, Chest pain, Hormone, and University of North Carolina at Chapel Hill
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Medical News Today | November 14, 2009
Human Expectation Of Pleasure Enhanced By Dopamine
Article Date: 14 Nov 2009 - 0:00 PST Enhancing the effects of the brain chemical dopamine influences how people make life choices by affecting expectations of pleasure, according to new research from the UCL Institute of Neurology. The...
In this article: L-DOPA, Medical advice, Parkinson's disease, Meningitis, and Wellcome Trust
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Dopamine key to decisions based on pleasure
...could govern such choices by influencing our expectations of the pleasure associated with these activities. When dopamine is released, it provides feelings of enjoyment and reinforcement, and motivates us to do or continue doing certain...
In this article: L-DOPA, Current Biology, University College, University College London, London, Thailand, and Greece
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MedicineNet | November 12, 2009
What's for Dinner? Brain Chemical Helps People Decide
...helps determine article What's for Dinner? Brain Chemical Helps People Decide THURSDAY, Nov. 12 (HealthDay News) -- The brain chemical dopamine influences how people make simple and complex decisions, from what to make for dinner to...
In this article: Direct evidence, Cell Press, and University College London
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Independent.ie | November 12, 2009
It's true . . . life is one long pleasure cruise, say boffins
...as where to go on holiday. They believe the "pleasure principle" may be at the heart of most human decision-making. The neurotransmitter dopamine, which helps transmit signals between nerve cells, generates pleasant feelings associated with...
In this article: L-DOPA, University College London, Thailand, and Greece
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Pursuit of pleasure drives human decisions
...where to go on holiday. They believe the ''pleasure principle'' may be at the heart of most human decision making. The neurotransmitter dopamine, which helps transmit signals between nerve cells, is linked to reward-seeking behaviour. It...
In this article: Direct evidence, Current Biology, L-DOPA, University College London, Thailand, and Greece
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Pursuit of hedonistic pleasure our only desire
...also believe that a lack of the chemical, caused by depression, disease or drug addiction, can lead to us making bad life choices. Dopamine, a substance which carries messages between brain cells, is believed to be the currency of the...
In this article: L-DOPA, Current Biology, Depression, University College London, Thailand, and Greece
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Description from Wikipedia:
Dopamine is a hormone and 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.
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