Dopamine News and Research RSS Feed - Dopamine News and Research

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.
DBS improves motor and non motor symptoms of patients with early Parkinson's disease

DBS improves motor and non motor symptoms of patients with early Parkinson's disease

Deep brain stimulation (DBS) has become a well-recognized non-pharmacologic treatment that improves motor symptoms of patients with early and advanced Parkinson's disease. [More]
Scientists use femtosecond lasers to tackle Parkinson's disease

Scientists use femtosecond lasers to tackle Parkinson's disease

Scientists are combining physics and neurobiology to tackle Parkinson's disease. The Okinawa Institute of Science and Technology Graduate University's Femtosecond Spectroscopy Unit and Neurobiology Research Unit, along with collaborators at the University of Otago, New Zealand are using lasers, nanotechnology and neuroscience to develop a new, versatile drug delivery system. [More]
Brain iron levels offer potential biomarker in the diagnosis of ADHD

Brain iron levels offer potential biomarker in the diagnosis of ADHD

Brain iron levels offer a potential biomarker in the diagnosis of attention deficit hyperactivity disorder (ADHD) and may help physicians and parents make better informed treatment decisions, according to new research published online in the journal Radiology. [More]
Failing dopamine pump damages brain cells of patients with Parkinson's disease

Failing dopamine pump damages brain cells of patients with Parkinson's disease

A study group at the Medical University of Vienna's Centre for Brain Research has investigated the function of an intracellular dopamine pump in Parkinson's patients compared to a healthy test group. [More]
Increase in protein helps store dopamine and protects from Parkinson's disease

Increase in protein helps store dopamine and protects from Parkinson's disease

Researchers from Emory's Rollins School of Public Health discovered that an increase in the protein that helps store dopamine, a critical brain chemical, led to enhanced dopamine neurotransmission and protection from a Parkinson's disease-related neurotoxin in mice. [More]
Combination of effective drugs for Parkinson's disease controls symptoms of Rett syndrome in mice

Combination of effective drugs for Parkinson's disease controls symptoms of Rett syndrome in mice

IDIBELL researchers, led by the director of the Program for Epigenetics and Cancer Biology, ICREA researcher and Professor of Genetics at the University of Barcelona, Manel Esteller, have shown that a combination of effective drugs for Parkinson's disease in mice that are used as a model of human Rett syndrome reduces some of the symptoms associated with this disease. [More]
PD MED trial: Levodopa drug better for long-term treatment of newly diagnosed PD

PD MED trial: Levodopa drug better for long-term treatment of newly diagnosed PD

For long-term treatment of newly diagnosed Parkinson’s disease (PD), the old drug levodopa provides better mobility and a higher quality of life than the two main alternatives, dopamine agonists (DA) and monoamine oxidase type B inhibitors (MAOBI), according to the largest-ever trial of PD treatment (PD MED), published in The Lancet. [More]
REM sleep disorder: A sign of impending neurodegenerative disease

REM sleep disorder: A sign of impending neurodegenerative disease

How many millions of people suffer from sleep disturbance? One sleep disorder in particular, called REM behavior disorder, could be a sign of impending neurodegenerative disease, including Parkinson's and dementia, say scientists presenting their research at the Society of Nuclear Medicine and Molecular Imaging's 2014 Annual Meeting. [More]
Brain circuit problem may contribute to auditory hallucinations of schizophrenia

Brain circuit problem may contribute to auditory hallucinations of schizophrenia

St. Jude Children's Research Hospital scientists have identified problems in a connection between brain structures that may predispose individuals to hearing the "voices" that are a common symptom of schizophrenia. The work appears in the June 6 issue of the journal Science. [More]

Dopamine transporter availability predicts ICDs

Reduced striatal dopamine transporter availability is already present in patients with Parkinson’s disease who go on to develop impulse control disorders, a study shows. [More]
Newron Pharmaceuticals submits safinamide NDA to FDA

Newron Pharmaceuticals submits safinamide NDA to FDA

Newron Pharmaceuticals S.p.A. ("Newron"), a research and development company focused on novel CNS and pain therapies, and its partner Zambon S.p.A., an international pharmaceutical company strongly committed to the CNS therapeutic area with a long experience in respiratory disease therapies, woman care and primary care, announce that the New Drug Application (NDA) for safinamide was submitted today to the US Food and Drug Administration (FDA). [More]
Stimulation of brain region causes behavioral changes

Stimulation of brain region causes behavioral changes

Artificially stimulating a brain region believed to play a key role in learning, reward and motivation induced monkeys to change which of two images they choose to look at. [More]
New research program to understand and treat debilitating psychiatric disorders

New research program to understand and treat debilitating psychiatric disorders

Scientists and physicians at UC San Francisco (UCSF) are leading a $26 million, multi-institutional research program in which they will employ advanced technology to characterize human brain networks and better understand and treat a range of common, debilitating psychiatric disorders, focusing first on anxiety disorders and major depression. [More]
Mice with 'mohawk hairstyles' reveal clues to development of autism

Mice with 'mohawk hairstyles' reveal clues to development of autism

"Aha" moments are rare in medical research, scientists say. As rare, they add, as finding mice with Mohawk-like hairstyles. [More]
New study provides evidence that bacteria in gut may be linked to children with autism

New study provides evidence that bacteria in gut may be linked to children with autism

Children with autism spectrum disorders (ASD) have significantly different concentrations of certain bacterial-produced chemicals, called metabolites, in their feces compared to children without ASD. [More]
Scan may rule out Parkinson’s disease

Scan may rule out Parkinson’s disease

Patients with clinical symptoms of early Parkinson’s disease but no evidence of dopaminergic deficit on brain imaging are unlikely to have the condition, say the PRECEPT Study investigators. [More]
Presynaptic dopaminergic lesion predicts drug-induced dyskinesia

Presynaptic dopaminergic lesion predicts drug-induced dyskinesia

Research suggests that the extent of presynaptic dopaminergic denervation before starting therapy may predict which patients with Parkinson’s disease will later develop levodopa-induced dyskinesia. [More]

New potential treatment for paraplegic patients

People with severe injuries to their spinal cord currently have no prospect of recovery and remain confined to their wheelchairs. Now, all that could change with a new treatment that stimulates the spinal cord using electric impulses. [More]
Inotropic agents support epoprostenol initiation in severe PAH

Inotropic agents support epoprostenol initiation in severe PAH

Researchers have published a protocol for use of inotropic agents during initiation of epoprostenol therapy in patients with severe pulmonary arterial hypertension. [More]
Smart drugs have lasting side-effects on young people's brain

Smart drugs have lasting side-effects on young people's brain

Over a million American students misuse prescription drugs or take illegal stimulants to increase their attention span, memory, and capacity to stay awake. Such "smart drugs" become more and more popular due to peer pressure, stricter academic requirements, and the tight job market. But young people who misuse them risk long-term impairments to brain function, warn Kimberly Urban at the University of Delaware and Wen-Jun Gao at Drexel University College of Medicine, USA, in a NIH-funded review published in the open-access journal Frontiers in Systems Neuroscience. [More]