Tag: "dopamine" at medical news
What Makes Tics Tick? Clues Found In Tourette Twins' Caudates
...al Brain Disorders Branch found that binding to D2 dopamine
receptors in the caudate nucleus was higher in the...affected persons had failed to show differences in dopamine
system function, the NIMH investigators were spurred by the fact that Tourette symptoms respond to d...
New Drug For Parkinson's Disease Proves Effective, Study Finds
...ochloride is a member of a family of drugsknown as dopamine
agonists, which mimic dopamine
and stimulatebrain cells just as the natural neurotransmitter would. Dopamineagonists on the market ...
Is Ritalin As Effective--And As Harmless--As It Could Be?
... that the d-threoenantiomer bound precisely to the dopamine
targets in the brain, while thebinding of l-threo ...hey say,because of its high-specificity binding of dopamine
receptors, d-threo taggedwith carbon-11 might prove useful as a PET radiotracer to probe the neurona...
Pioneer In Nuclear Medicine Wins Lifetime Award
...uroreceptors in thebrain. Their pinpointing of the dopamine
receptors inside the brain led to muchwork in addi...tereceptors. "We now know that cocaine affects the dopamine
receptors," saidWagner, "and we continue to learn about addiction." Parallel to his work in ...
A Concentration Killer: Study Shows Brain Chemistry Defect Is Key To Attention
Deficit Hyperactivity Disorder In Adults
...active. Previous evidence suggested that a dopamine
malfunction occurs in thosewith ADHD. For example, drugs that enhance dopamine
function appear to quellthe disorder's symptoms. "Our finding, however, is the first direct evidenc...
Novel Imaging Agent Developed By Penn Researchers Provides Insight Into Brain's Message Delivery System
...e flow of a chemical messenger in the brain called dopamine
-- and canbe used as a diagnostic tool for imaging dopamine
transporters. "The dopamine
system in the brain contains receptors that control basicfunctions lik...
The Problem With Fen-Phen
...e of phentermine to volunteers,he found that their dopamine
levels increased. As a control, Wurtman alsomeasured serotonin in platelets, and was surprised to find that plateletserotonin increased much more, an effect that could only have resulted from MAOinhibition. Ulus then confirmed this action in lungs an...
Schizophrenia-Like Behavior In Rats Blocked Via Glutamate
...calglutamate while stimulating activation of brain dopamine
systems. Currentantipsychotic drugs act by reducing dopamine
activity. When Dr. Bita Moghaddam and Barbara Adams of Yale University injected rats withPCP, they...
Patients are sought for a clinical study to determine
...trol their own movements. Levodopa andMirapex are dopamine
agonists that work by fooling the brain into thinking thatdopamine exists. When effective, these medications allow patients to regainsome control over their motor functions. "Our hypothesis is that estrogen will work with the Mirapex and Levodopa...
Neurotransmission Machinery Visualized For The First Time
..., vesicles fill up with neurotransmitters, such as dopamine
orserotonin. They then travel out into the neuron's extensions (axons), where theydock at the membrane and await an electrochemical signal to merge. At thismoment the SNAREs form a complex. Like other known fusion mechanisms, such as those used by v...
Altered Brain Chemistry In Bulimia Nervosa Patients Persists After Recovery, According To UPMC Researchers
...jormetabolites of the neurotransmitters serotonin, dopamine
and norepinephrine. They also gave the participant...xactness. The levels of the other brainchemicals, dopamine
and norepinephrine, were normal in comparison. In addition,the group of recovered bulimia nervosa w...
Differences In Brain Function Found For Attention Deficit Disorder
...Ritalin primarily, but not exclusively, influences dopamine
neurotransmission.The opposite effects of Ritalin ...out the disordersuggest that ADD involves atypical dopamine
modulation in the striatum, shesaid. The researchers caution that the study was conducted with a sma...
New Theory May Explain Ritalin Action In Hyperactivity
...clude regulation of activity and locomotion. Both dopamine
andserotonin are neurotransmitters, chemicals whic...creating"knockout" mice lacking a protein called a dopamine
transporter that scavengesthe dopamine
remaining in the spaces between neurons after the chemical ha...
Breakthrough? Study Finds Dopamine Cannot Be Source Of Pleasure In Brain
...Carolina at Chapel Hill study suggests insteadthat dopamine
plays an early central role in pleasure, but anoth... animals themselves applied theshock, little or no dopamine
appeared," Wightman said. "Considering thatscientists have been pretty satisfied that dopamine
Fetal Cell Therapy Benefits Some Parkinson's Patients
... the area of the brain in whichprogressive loss of dopamine
production triggers the symptoms of Parkinson'sdis...implants had a greater than 20 percent increase in dopamine
activity in theputamen, regardless of age. There were no significant surgical complicationsduring t...
New Findings On Dopamine Receptor Biology: Implications For Mental Illness
...essor Richard C. Dethhas discovered a link between dopamine
receptors and cognition that could opennew avenues...ention. While researchers have long suspected that dopamine
and folate contribute tomental illness, they have not been able to show how. Deth's team hasdemonstr...
Emory University researchers say cholinergic agents may offer relief from tics in adults with Tourette syndrome
...ome work on otherneurotransmitters. For instance, dopamine
blockers such as haloperidol can alleviate tics at theexpense of a number of side effects. Fluoxetine (Prozac) and sertraline(Zoloft), which act upon the serotonin system, lessen obsessive-compulsivesymptoms associated with Tourette but may aggravat...
Jefferson scientist begins clinical trial to study promising Parkinson's disease drug
...PECT will allow the team tovisualize the number of dopamine
terminals in the striatum, the part of thebrain that receives dopamine
from the substantia nigra, which is the brainregion that dies in Parkinson's disease. Comparing pati...
Pain, itself, elicits pain relief, and does so through 'reward' pathway
...rturns the long-held assumptionthat the release of dopamine
in the nucleus accumbens is associated only withpositive experiences. The evolutionary value of a rush of analgesia is clear, as it could allow, forexample, a badly injured individual to escape an attacker. It probably couldalso explain why some in...
Alcohol: the chemistry of the dark side
...emicalmarkers-as an example, perhaps low levels of dopamine
and high levels of CRFthat could better warn of danger ahead....
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