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.
Teenagers’ impulsive and risk taking behavior not related to brain deficit symptoms

Teenagers’ impulsive and risk taking behavior not related to brain deficit symptoms

Brain scans reveal lower serotonin transporters in people with mild cognitive impairment

Brain scans reveal lower serotonin transporters in people with mild cognitive impairment

ACR develops 3 new guidance documents, revises 32 others to advance science of radiology

ACR develops 3 new guidance documents, revises 32 others to advance science of radiology

Diabetes drug shows promise as Parkinson’s treatment

Diabetes drug shows promise as Parkinson’s treatment

UVA researchers identify connection between dopamine neurons and brain’s circadian center

UVA researchers identify connection between dopamine neurons and brain’s circadian center

New drug may limit disease progression, provide better symptom relief to Parkinson's patients

New drug may limit disease progression, provide better symptom relief to Parkinson's patients

Immune system may wage a battle in Parkinson’s disease

Immune system may wage a battle in Parkinson’s disease

Scientists discover new way to observe brain changes caused by Parkinson's disease

Scientists discover new way to observe brain changes caused by Parkinson's disease

Low-dose anxiolytics can ameliorate social disadvantage related to trait anxiety

Low-dose anxiolytics can ameliorate social disadvantage related to trait anxiety

Dietary shift from high-fat foods to low-fat diet causes withdrawal-like symptoms in mice

Dietary shift from high-fat foods to low-fat diet causes withdrawal-like symptoms in mice

Scientists find simple way to raise accuracy of diagnostic tests and common assays

Scientists find simple way to raise accuracy of diagnostic tests and common assays

Vitamin D deficiency during pregnancy negatively impacts development of children

Vitamin D deficiency during pregnancy negatively impacts development of children

New technology could help patients requiring stem cell therapies for Parkinson's, stroke, other diseases

New technology could help patients requiring stem cell therapies for Parkinson's, stroke, other diseases

Neuroscientists discover how prenatal alcohol exposure increases risk for drug addiction later in life

Neuroscientists discover how prenatal alcohol exposure increases risk for drug addiction later in life

Frequent sex linked to higher cognitive function in seniors

Frequent sex linked to higher cognitive function in seniors

Researchers find new evidence that autoimmunity plays role in Parkinson's disease

Researchers find new evidence that autoimmunity plays role in Parkinson's disease

Study explores factors, patterns that predict use of restrictive feeding for children

Study explores factors, patterns that predict use of restrictive feeding for children

Study shows correlation between urinary stress hormones and coronary heart disease

Study shows correlation between urinary stress hormones and coronary heart disease

New molecular compound improves balance and coordination in mouse model of Parkinson's disease

New molecular compound improves balance and coordination in mouse model of Parkinson's disease

Single bout of exercise can have significant positive behavioral and cognitive effects

Single bout of exercise can have significant positive behavioral and cognitive effects