Dopamine News and Research

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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 has many functions in the brain, including important roles in behavior and cognition, motor activity, motivation and reward, inhibition of prolactin production (involved in lactation), sleep, mood, attention, and learning. Dopaminergic neurons (i.e., neurons whose primary neurotransmitter is dopamine) are present chiefly in the ventral tegmental area (VTA) of the midbrain, substantia nigra pars compacta, and arcuate nucleus of the hypothalamus.

Researchers find protein that controls neurotransmission: findings may lead to new drugs to treat neurological disorders

Scientists at Weill Cornell Medical College have discovered that the single protein -- alpha 2 delta -- exerts a spigot-like function, controlling the volume of neurotransmitters and other chemicals that flow between the synapses of brain neurons. The study, published online in Nature, shows how brain cells talk to each other through these signals, relaying thoughts, feelings and action, and this powerful molecule plays a crucial role in regulating effective communication.

15 May 2012

CU scientist looks at reward circuits in the brain

Why does one person become anorexic and another obese? A study recently published by a University of Colorado School of Medicine researcher shows that reward circuits in the brain are sensitized in anorexic women and desensitized in obese women.

15 May 2012

Sunovion announces results from LATUDA open-label study for schizophrenia

Sunovion Pharmaceuticals Inc. today announced results from an open-label study that switched clinically stable, but symptomatic adult outpatients with schizophrenia from other antipsychotic agents to LATUDA.

10 May 2012

Scientists pinpoint mechanism essential for memory formation

Now, in a study that appears in the May 10, 2012 issue of the journal Neuron, scientists from the Florida campus of The Scripps Research Institute have pinpointed a mechanism that is essential for forming memories in the first place and, as it turns out, is equally essential for eliminating them after memories have formed.

10 May 2012

Combination of Pressure Right device and antiemetics effective in reducing PONV

Pressure Point Inc. stated in a recent press release that in a peer reviewed research article appearing in the Anesthesia & Analgesia Journal last month entitled: Use of Disposable Acupressure Device, its Pressure Right acustimulation disposable (adhesive) wrist device confirmed a positive advantage when used as part of a multimodal antiemetic regimen. The clinical effects of the Pressure Right acupressure technique in a sham-controlled study comparison demonstrated a definite impact in reducing PONV.

9 May 2012

Two studies suggest long-term value of Deplin in treating MDD

Two studies presented this week at the 164th Annual Meeting of the American Psychiatric Association suggest the long-term value of Deplin (L-methylfolate 15mg) in treating major depressive disorder (MDD) and describe subsets of patients who may benefit more robustly from this medical food.

9 May 2012

Study shows how adolescent cannabis use can cause schizophrenia

New research from the Royal College of Surgeons in Ireland (RCSI) published in Nature's Neuropsychopharmacology has shown physical changes to exist in specific brain areas implicated in schizophrenia following the use of cannabis during adolescence. The research has shown how cannabis use during adolescence can interact with a gene, called the COMT gene, to cause physical changes in the brain.

9 May 2012

Researchers find talking about ourselves triggers sensation of pleasure

According to researchers, talking about ourselves - whether in a personal conversation or through social media sites like Facebook and Twitter - can trigger the same sensation of pleasure in the brain as food, money or sex.

8 May 2012

Positive results from Dainippon Sumitomo Pharma's LATUDA trials for bipolar I depression

Dainippon Sumitomo Pharma Co., Ltd. announced today results from two Phase 3 clinical trials designed to evaluate the efficacy and safety of LATUDA as adjunctive therapy and monotherapy, respectively, in patients with bipolar I depression (PREVAIL 1 and PREVAIL 2; PRogram to EValuate the Antidepressant Impact of Lurasidone).

7 May 2012

Therapy to halt symptoms in Parkinson's patients

Parkinson's disease, a disorder which affects movement and cognition, affects over a million Americans, including actor Michael J. Fox, who first brought it to the attention of many TV-watching Americans. It's characterized by a gradual loss of neurons that produce dopamine. Mutations in the gene known as DJ-1 lead to accelerated loss of dopaminergic neurons and result in the onset of Parkinson's symptoms at a young age.

3 May 2012

Dopamine linked to willingness to work for a monetary reward

A new brain imaging study has shown that an individual’s willingness to work hard to earn money is strongly influenced by the chemistry in three specific areas of the brain. Researchers claim that this could have important implications for the treatment of attention-deficit disorder, depression, schizophrenia and other forms of mental illness characterized by decreased motivation.

3 May 2012

ASNTR honors UTMSH, MSU scientists with 2012 Sanberg awards

At the 19th Annual Conference of the American Society of Neural Therapy and Repair (ASNTR), held April 26 - 28 in Clearwater Beach, Florida, the ASNTR awarded The 2012 Bernard Sanberg Memorial Award for Brain Repair to Timothy J. Collier, PhD, professor of translational science and molecular medicine at Michigan State University and director of the Udall Center of Excellence in Parkinson's Disease Research at Michigan State University and the University of Cincinnati. ASNTR also presented The Molly and Bernard Sanberg Memorial Award to Sean I. Savitz, MD, associat

2 May 2012

Human study suggests biological basis for individual differences in behavior

Whether someone is a "go-getter" or a "slacker" may depend on individual differences in the brain chemical dopamine, according to new research in the May 2 issue of The Journal of Neuroscience. The findings suggest that dopamine affects cost-benefit analyses.

2 May 2012

First-ever study to evaluate effects of interaction between metamphetamines and Ibudilast

John W. Tsuang, M.D., principal investigator at the Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center (LA BioMed), in conjunction with Steven J. Shoptaw, Ph.D., from the UCLA Department of Family Medicine, is spearheading a Phase I clinical safety trial that for the first time examines the effects of Ibudilast when administered with metamphetamine (MA), an addictive stimulant that is closely related to amphetamine.

26 Apr 2012

Abbott reports positive results from LCIG Phase 3 trial for advanced Parkinson's disease

Abbott announced today the results from a Phase 3 trial evaluating the company's investigational compound for advanced Parkinson's disease, levodopa-carbidopa intestinal gel (LCIG).

18 Apr 2012

Berries may reduce Parkinson’s disease risk in men: Study

A new study has found that men who regularly consume foods rich in flavonoids, such as berries, apples, certain vegetables, tea and red wine, may significantly reduce their risk for developing Parkinson's disease. The study was published in the journal Neurology this week. It added that there was no such effect among women.

9 Apr 2012

Brains of people with anorexia and obesity are wired differently

The brains of people with anorexia and obesity are wired differently, according to new research. Neuroscientists for the first time have found that how our brains respond to food differs across a spectrum of eating behaviors - from extreme overeating to food deprivation.

4 Apr 2012

UCB receives FDA approval for Neupro to treat idiopathic Parkinson's, RLS

UCB announced today that the U.S. Food and Drug Administration (FDA) approved Neupro (Rotigotine Transdermal System) for the treatment of the signs and symptoms of advanced stage idiopathic Parkinson's disease (PD) and as a treatment for moderate-to-severe primary Restless Legs Syndrome.

3 Apr 2012

Introducing art into nursing care improves stroke survivors' QOL

Stroke survivors who like art have a significantly higher quality of life than those who do not, according to new research. Patients who appreciated music, painting and theatre recovered better from their stroke than patients who did not.

16 Mar 2012

AT-1001 shows promise in treating drug addiction

In preclinical studies, researchers at SRI International and Astraea Therapeutics have recently evaluated the role of a new drug receptor target that shows promise for the treatment of drug addiction.

15 Mar 2012