Dopamine News and Research

Latest Dopamine News and Research

Researchers identify best time for stem cell collection for Parkinson's therapy

Researchers have identified a stage during dopamine neuron differentiation that may be an ideal time to collect human embryonic stem cells for transplantation to treat Parkinson's disease, according to data presented at Neuroscience 2008, the 38th annual meeting of the Society for Neuroscience.

19 Nov 2008

Researchers define ideal time for stem cell collection for Parkinson's disease therapy

19 Nov 2008

Breakthrough in cellular analysis

Like skilled assassins, many diseases seem to know exactly what types of cells to attack.

16 Nov 2008

Breakthrough in cell-type analysis offers new ways to study development and disease

Like skilled assassins, many diseases seem to know exactly what types of cells to attack. While decimating one cadre of cells, diseases will inexplicably spare a seemingly identical group of neighbors. What makes cells vulnerable or not depends largely on the kinds and amounts of proteins they produce - their 'translational profile,' in the lingo of molecular biology. For this reason, scientists have struggled to parse the subtle molecular differences among the hundreds of specialized cell types that are tangled together in tissues like the brain.

13 Nov 2008

Light triggers a new chemical code for brain cells

Brain cells can adopt a new chemical code in response to cues from the outside world, scientists working with tadpoles at the University of California, San Diego report in the journal Nature this week.

12 Nov 2008

Novel tool helps study the biochemical basis of Alzheimer's

A new study being published in this Friday's online edition of Cell will help answer the question, what causes Parkinson's disease?

12 Nov 2008

Interaction between gene variants may alter brain function in schizophrenia

A collaborative study led by investigators from Massachusetts General Hospital (MGH) is giving what may be the first look at how interactions between genes underlie a key symptom of schizophrenia, impaired working memory.

8 Nov 2008

Discovery of new target in brain for treating schizophrenia

Research from the University of Pittsburgh could expand the options for controlling schizophrenia by identifying a brain region that responds to more than one type of antipsychotic drug.

6 Nov 2008

New obesity drug Tesofensine may have huge potential

According to trials, a new obesity drug, Tesofensine, which may be launched on the world market in a few years, can produce weight loss twice that of currently approved obesity drugs. The Danish company Neurosearch and a number of researchers at the Faculty of Life Sciences at University of Copenhagen are behind the promising findings.

23 Oct 2008

Low levels of vitamin D linked to Parkinson's

Scientists in the U.S. have found that many people suffering from Parkinson's disease have inadequate levels of vitamin D compared to healthy people.

14 Oct 2008

Prevalence of vitamin D insufficiency in patients with Parkinson's and Alzheimer's disease

A majority of Parkinson's disease patients had insufficient levels of vitamin D in a new study from Emory University School of Medicine.

13 Oct 2008

Methamphetamine enters brain quickly and lingers

Using positron emission tomography (PET) to track tracer doses of methamphetamine in humans' brains, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory find that the addictive and long-lasting effects of this increasingly prevalent drug can be explained in part by its pharmacokinetics - the rate at which it enters and clears the brain, and its distribution.

13 Oct 2008

Women who smoke at risk for major depression

A new study by Australian scientists has revealed that women who smoke are at greater risk of developing a major depressive disorder.

1 Oct 2008

Study questions use of newer antipsychotic drugs in children

A new study has found that older antipsychotic drugs are as effective as newer ones for some children.

16 Sep 2008

Abuse of painkillers can predispose adolescents to lifelong addiction

No child aspires to a lifetime of addiction. But their brains might. In new research to appear online in the journal Neuropsychopharmacology today, Rockefeller University researchers reveal that adolescent brains exposed to the painkiller OxyContin can sustain lifelong and permanent changes in their reward system - changes that increase the drug's euphoric properties and make such adolescents more vulnerable to the drug's effects later in adulthood.

10 Sep 2008

Diazepam effects nerve cells in the brain reward system

Addictions to medicines and drugs are thought to develop over a relatively long period of time. The process involves both structural and functional changes in brain nerve cells that are still poorly understood.

27 Aug 2008

One night without sleep increases chemical dopamine in the human brain

Because drugs that increase dopamine, like amphetamines, promote wakefulness, the findings offer a potential mechanism explaining how the brain helps people stay awake despite the urge to sleep. However, the study also shows that the increase in dopamine cannot compensate for the cognitive deficits caused by sleep deprivation.

19 Aug 2008

Being outdoors good for children's eyesight

Australian researchers have found that children who spend the most time outdoors are least likely to suffer from myopia.

13 Aug 2008

Dopamine and Parkinson's

Parkinson's disease and drug addiction are polar opposite diseases, but both depend upon dopamine in the brain. Parkinson's patients don't have enough of it; drug addicts get too much of it. Although the importance of dopamine in these disorders has been well known, the way it works has been a mystery.

10 Aug 2008

COMT gene variation affects fear processing, anxiety

Inborn differences may help explain why trauma gives some people bad memories and others the nightmare of post-traumatic stress. Scientists in Germany and the United States have reported evidence linking genes to anxious behavior. The findings appear in the August issue of Behavioral Neuroscience, published by the American Psychological Association.

10 Aug 2008