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Dopamine in Medical News

Why dopamine freezes parkinson patients and drives drug addicts

CHICAGO -- 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...

Identification of dopamine 'mother cells' could lead to future Parkinson's treatments

Mother cells which produce the neurons affected by Parkinsons disease have been identified by scientists, according to new research published in the journal Glia. The new discovery could pave the way for future treatments for the disease, including the possibility of growing new neurons, and t...

Food restriction increases dopamine receptor levels in obese rats

UPTON, NY -- A brain-imaging study of genetically obese rats conducted at the U.S. Department of Energy's Brookhaven National Laboratory provides more evidence that dopamine - a brain chemical associated with reward, pleasure, movement, and motivation - plays a role in obesity. The scientists foun...

Risk takers, drug abusers driven by decreased ability to process dopamine

NASHVILLE, Tenn.--For risk-takers and impulsive people, New Year's resolutions often include being more careful, spending more frugally and cutting back on dangerous behavior, such as drug use. But new research from Vanderbilt finds that these individuals--labeled as novelty seekers by psychologis...

Antidepressants Can Increase Depression, Impulsivity and Suicide Risk by Decreasing Dopamine

TARPON SPRINGS, Fla., Feb. 8 /PRNewswire/ -- Antidepressant medications which increase serotonin neurotransmitter levels can depress dopamine levels. Decreasing dopamine level can increase depression, impulsivity and suicide risk in depressed patients, who were previously dopamine deficient. "...

New insight for dopamine transporter

Researchers of Yale University had discovered a changed version of dopamine// transporter in healthy persons with genetical variations that may be associated with substance abuse or attention deficit hyperactivity disorder (ADHD). Dopamine is a protein produced in the hypothalamus and some a...

Breast Cancer risk for women on dopamine antagonists

A study, by researchers of the Harvard Medical School, of more than 100,000 women, indicates that women who use dopamine antagonists, i.e. anti-psychotics, for either psychiatric// illnesses or other conditions, may have an increased risk of breast cancer. The study involved about 52,000 women...

Dementia induced and blocked in Parkinson's fly model

...stem of the brain, the part of the brain that produces the neurotransmitter dopamine and is at the center of the damage caused by Parkinson's. "In healthy flies, sleep deprivation decreases dopamine receptor production and causes temporary learning impairments that are full...

Older Diabetics Should Avoid Dementia Meds

...ne diabetes treatment and was strikingly high during the initial period of antipsychotic therapy." Other studies suggest that the neurotransmitter dopamine has a role in keeping blood glucose levels under control. The researchers noted that first-time antipsychotic users may get a disruption in this syste...

Hormones May Affect Neurological Disease Risk

... found that a number of estrogens acting through their receptors affect the dopamine transporter (DAT). dopamine is a neurotransmitter in the brain that plays an important role in normal f...
Dopamine in Medical Technology

U.S. FDA Approves Requip(R) XL(TM), the First and Only Oral Once-Daily Non-Ergot Dopamine Agonist for Parkinson's Disease

Requip XL Improved Symptoms in Patients Not Optimally Controlled with Levodopa and Reduced Patients' "Off" Time by Nearly Two Hours Per Day RESEARCH TRIANGLE PARK, N.C., June 13 /PRNewswire-FirstCall/ -- GlaxoSmithKline (NYSE: GSK ) today announced the approval of Requip(R) XL(TM) (ropini...

Michael J. Fox Foundation Awards Over $2 Million for Validation of 10 Parkinson's Therapeutic Targets

...son' s disease therapy Mathieu Lesort, PhD, University of Alabama at Birmingham The therapeutic role of CMA-MEF2D in the survival of dopamine neurons Zixu Mao, PhD, Emory University SHP-2 phosphatase: A new pharmacological target for Parkinson ' s disease? Maria-Crist...

ADHD Genes Found; Known to Play Roles in Neurodevelopment

...curred in a gene for a glutamate receptor. Glutamate is a neurotransmitter, a protein that carries signals in the brain. While ADHD medications act on dopamine and serotonin, which are also neurotransmitters, this new finding may suggest an important role for glutamate as well, at least for some ADHD patients...

Study Demonstrating Lurasidone Is Effective in Patients With Schizophrenia Published in The Journal of Clinical Psychiatry

...renia. Lurasidone has a unique chemical structure that differs from conventional and atypical antipsychotic agents. It possesses high affinities for dopamine D(2), serotonin 5-HT(7), 5-HT(2A), 5-HT(1A), and noradrenaline alpha(2C) receptors. Lurasidone exhibits little or no affinity for histamine H(1) or ac...

Dainippon Sumitomo Pharma Announces Lurasidone Phase III Data in Patients With Schizophrenia

...nd developed by Dainippon Sumitomo Pharma Co., Ltd., lurasidone is a novel compound with a unique receptor-binding profile including high affinity for dopamine D(2), serotonin 5-HT(2A), 5-HT(7), 5-HT(1A), and noradrenalin alpha(2c) receptors. Lurasidone has low affinity for histamine H(1), and cholinergic M(1...

RISPERDAL(R) CONSTA(R) (Risperidone) Long-Acting Treatment Delayed the Time to Relapse in Patients with Bipolar I Disorder

...ho develop symptoms of hyperglycemia should also undergo fasting blood glucose testing. Hyperprolactinemia: As with other drugs that antagonize dopamine D2 receptors, RISPERDAL(R) CONSTA(R) elevates prolactin levels and the elevation persists during chronic administration. Risperidone is associated wi...

Addrenex Pharmaceuticals Expands Product Pipeline by Licensing New Drug to Treat Narcolepsy

...sion. According to Khayrallah, the compound has numerous potential applications because it is thought to engage multiple neurotransmitters, including dopamine and noradrenalin, that play a role in a variety of disorders. Under the terms of the contract, Addrenex will pay licensing fees and royalties to...

FDA Approves Vanda Pharmaceuticals' Fanapt(TM) for the Treatment of Schizophrenia

...apt(TM) to placebo and active control in patients with schizophrenia, as well as safety data from more than 3,000 patients. Fanapt(TM) is a mixed dopamine D2 / serotonin 5HT2A receptor antagonist, and belongs to the class of atypical antipsychotics. "The approval of Fanapt(TM) marks a new opportuni...

New Studies on Once-Daily Extended Release Pramipexole Presented at American Academy of Neurology Annual Meeting

...s. 10%). Patients and caregivers should be informed that impulse control disorders and compulsive behaviors have been reported in patients taking dopamine agonists, including pramipexole. A once-daily, extended release formulation of pramipexole dihydrochloride tablets is currently under review by t...

Parkinson's Disease Medication Triggers Destructive Behaviors

...blished in 2005 that reported a connection between dopamine agonist medications and compulsive gambling or hypersexuality. dopamine agonists are a class of drugs that include pramipe...up included 267 patients. Of those, 66 were taking dopamine agonists for their Parkinson's disease. Of those 6...
Dopamine in Medical Definition

Galactogogue

... in humans and other animals. It may be synthetic , plant-derived, or endogenous . Most of those discovered have been found to interact with the dopamine system in such a way to increase the production of prolactin endogenously. Examples include Domperidone & Metoclopramide (synthetic), sw...
Dopamine in Medical Dictionary

Yawning

...gy, pathology, phylogenesis, history, yawning contagiosiness, beliefs ... dopamine agonist-induced yawning in rats: a dopamine D3 ... Cooling Diminish the Incidence of Contagious Yawning ... In hu...

Tardive dyskinesia

... dyskinesia manifesting as a side effect of long-term or high-dose use of dopamine antagonists, usually antipsychotics. Other dopamine antagonists that can cause tardive dyskinesia are drugs for gastrointest...

Serotonin

... the transmission of nerve impulses. ... Serotonin food serotonin depression serotonin norepinephrine natural serotonin supplement dopamine ... Serotonin happens to be the most widely studied ... Up-to-the-minute news coverage of national, regional and international news enhanced wit...

Norepinephrine

...rine acts at presynaptic alpha2 receptors to inhibit its own release. ... There is very limited clincial use of norepinephrine . ... ... such as dopamine or norepinephrine , generally have fewer side effects than tricyclics. ... primarily serotonin and norepinephrine , known as monoamines. ... B...

Hyperinsulinemia

...f frank ... ... is characterized by hyperinsulinemia . Although hyperinsulinemia is usually thought ... Hyperinsulinemia also interferes with dopamine clearance in the ventral ... ... fashion, there is no widely agreed upon definition of hyperinsulinemia . ... Chronic Hyperinsulinemia Associat...

Catecholamines

...prise important neurotransmitters and hormones , of which the main ones are dopamine , noradrenaline catecholamine n. Any of a group of amines derived fro...olamines are dopamine, norepinephrine, and epinephrine. ... This forms dopamine (DA), one of three naturally occurring catecholamines . ... In addition to...
Dopamine in Biological News

Phasic firing of dopamine neurons is key to brain's prediction of rewards

San Antonio Researchers are one step closer to understanding the neurobiology that allows people to successfully learn motivated behaviors by associating environmental cues with rewarding outcomes, according to a study published yesterday in the Proceedings of the National Academy of Sciences ' ...

Caltech scientists engineer supersensitive receptor, gain better understanding of dopamine system

PASADENA, Calif.--Genetically modifying a receptor found on the neurons that produce the neurotransmitter dopamine has given California Institute of Technology (Caltech) researchers a unique glimpse into the workings of the brain's dopamine system--as well as a new target for treating diseases tha...

Unlocking mystery of why dopamine freezes Parkinson's patients

CHICAGO -- 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...

The birth and death of dopamine neurons: A new model for neurodegeneration

The gradual loss of dopamine neurons is a hallmark of many neurodegenerative diseases - Parkinsons Disease chief among them. Stem cell biology and regenerative medicine offer novel therapies for the restoration of dopamine neurons. This week in the online open-access journal PLoS Biology Dr. Raja...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

Implanting dopamine generators (dopaminergics) in brain cells has produced improvement in the symptoms in Parkinson's, according to the results of tests carried out with monkeys by the Navarra University Hospital, led by Dr MarĂ­a Rosario Luquin Piudo, neurologist at the Hospital and at the other Na...

New dopamine brain target discovered

A team of Canadian researchers, lead by Dr. Susan George and Dr. Brian O'Dowd at the Centre for Addiction and Mental health (CAMH), discovered a distinct dopamine signalling complex in the brain. Composed of two different types of dopamine receptors, this novel target may have a significant role i...

High dopamine transporter levels not correlated with ADHD

Results from a brain-imaging study conducted at the U.S. Department of Energy's Brookhaven National Laboratory in collaboration with Mount Sinai School of Medicine in New York indicate that levels of a brain protein proposed as a diagnostic marker for attention-deficit hyperactivity disorder (ADHD)...

Jefferson biologist coaxing human embryonic stem cells to make dopamine with simpler, faster method

For clinicians, the ability to look routinely inside the body and see -- at the level of the cell -- how it confronts disease is a distant dream. But in a series of experiments with genetically engineered mice, a team of researchers from the Howard Hughes Medical Institute (HHMI) at the University ...

Flies on speed offer insight into the roles of dopamine in sleep and arousal

Methamphetamine, the drug of choice for long-distance truckers and college students pulling all-nighters, appears to do a similar trick for fruit flies, too. This finding is one of several in a new study that demonstrates a critical role for the neurotransmitter dopamine in the modulation of sleep,...

Discovery of New Dopamine Action May Yield Alternative Psychiatric Drugs

Duke University Medical Center researchers have discovered a new mechanism by which chronically high levels of the neurotransmitter dopamine exert their effects on the brain. Normally associated with triggering feelings of pleasure, excess concentrations of dopamine underlie schizophrenia, attentio...

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Dopamine in Biological Technology

Alseres Pharmaceuticals Presents Inosine and Dopamine Transporter (DAT) Blocker Preclinical Data at the American Society for Experimental NeuroTherapeutics (ASENT) Conference

Preclinical Studies Demonstrate a Viable Intravenous Inosine Formulation and Support Oral Dosing for Three Alseres' DAT Blocker Compounds HOPKINTON, Mass., March 10 /PRNewswire-FirstCall/ -- Alseres Pharmaceuticals, Inc. (Nasdaq: ALSE ) announced that data from preclinical studies of the C...

Ceregene Receives Additional Grant From Michael J. Fox Foundation to Expand Long-Term Testing of CERE-120 Patients

...harmacological properties, and both have been shown to benefit the midbrain dopamine neurons that degenerate in Parkinson's disease. Degeneration of these neur...ve cells in the substantia nigra, which project their axons to the putamen. dopamine is a neurotransmitter involved in controlling movement and coordination, so...

Novel drug discovery tool could identify promising new therapies for Parkinson's disease

...y shaking, slowed movement, stiffened muscles, and impaired balance. The neurons normally produce a chemical called dopamine. A synthetic precursor of dopamine called L-DOPA or drugs that mimic dopamine's action can provide symptomatic relief from Parkinson's disease. Unfortunately, these drugs lose much of t...

Vanda Pharmaceuticals to Present Data on Fanapt(TM) and Tasimelteon at the 162nd American Psychiatric Association Annual Meeting

...th iloperidone efficacy on long term clinical outcome of patients who switch to iloperidone. NR1-058 Effect of polymorphisms in the dopamine receptor 2 gene on iloperidone efficacy for the treatment of patients with schizophrenia. NR7-009 Common effect of antipsychotics on bi...

Neurocrine Biosciences Reports First Quarter 2009 Results

...hly selective VMAT2 inhibitor that is effective in regulating the levels of dopamine release during nerve communication, while at the same time having minimal i...dive dyskinesia, and Huntington's disease. Additionally, the modulation of dopamine pathways may also be useful for patients suffering from schizophrenia. ...

Intra-Cellular Therapies Reports Positive Final Results of a Phase II Clinical Trial with ITI-007 in Patients with Sleep Maintenance Insomnia

...act simultaneously as a 5HT2A receptor antagonist, dopamine receptor phosphoprotein modulator (DPPM), and inhi...HT2A receptors while adding incremental amounts of dopamine receptor and serotonin reuptake transporter (SERT)...igh-potency blockade of 5HT2A receptors and unique dopamine receptor activity should allow a personalized appr...

New Report Provides Expert Analysis of Recent Advances and Setbacks in Parkinson's Disease Drug Development

...eatment and disease modification of PD, including: -- Unmet needs: dopamine agonists, wearing off vs. dyskinesia, depression, pain, dementia, ps...eublastin, GAD/glutamic acid decarboxylase), alpha-synuclein; -- dopamine agonists, monoamine oxidase inhibitors; -- Levodopa formulations, COMT ...

Ceregene Announces Clinical Data From Phase 2 Clinical Trial of CERE-120 for Parkinson's Disease

...people in the United States. Its main symptoms are caused by a reduction in dopamine containing nerve cells of the midbrain. dopamine is a neurotransmitter involved in controlling movement and coordination, so...

Michael J. Fox Foundation Awards $2 Million Grant From EMD Serono to Research Projects on Cognitive Deficits in Parkinson's Disease

...test the hypothesis that simultaneous reduction of dopamine and the neurotransmitter acetylcholine, which play...roblems with impulse control that may be linked to dopamine replacement therapy in PD. While dopamine is involved with both the motor and reward systems...

Circassia Acquires North American and Japanese Rights to Dopexamine

...ospital for 17.5 days on average compared with 29.5 days (p = 0.001) for those who received standard therapy. Dopexamine is a beta2 adrenoceptor and dopamine receptor agonist, which is approved in Europe in indications related to heart failure. Dopexamine is not approved for use currently in the US, Canada ...
Dopamine in Biological Products

Rabbit Anti-Human D4 Dopamine Receptor Antibody, Unconjugated from Sigma-Aldrich

Description: Immunogen: synthetic peptide corresponding to the third cytoplasmic loop of human D 4 dopamine receptor, conjugated to KLH. The immunizing peptide has 79% homology with the rat and mouse gene. Physical form: Solution in phosphate buffered saline, pH 7.7, containing 0.01% sodium azide. Titertest ...
Company:Sigma-Aldrich

Anti-Dopamine D2 / D3 Receptor Polyclonal Antibody, Unconjugated from CHEMICON

Description:... dopamine D2 and D3 receptor, human and possibly mouse. AB1502 detects 40 ng of dopamine receptor peptide by ELISA. AB1502 is not neutralizing....
Company:CHEMICON

Mouse Dopaminergic Neuron Differentiation Kit, 2nd Generation from R&D Systems

Description:...ouse embryonic stem cells to dopaminergic neurons. dopamine cell bodies exist in the midbrain, where they are ...rgic (DA) neurons give rise to extensive forebrain dopamine innervation ( e.g.projections to the caudate nucle...l hippocampus). The basic organization of midbrain dopamine neurons and their projections is consistent across...
Company:R&D Systems
Dopamine in Biological Definition

Hormone

...cologic doses of glucocorticoid to suppress inflammation. Important human hormones Amine-derived hormones : adrenaline (or epinephrine) dopamine melatonin (N-acetyl-5-methoxytryptamine) noradrenaline (or norepinephrine) serotonin (5-HT) thyroxine (T4) triiodothyronine (T3)...

Limbic system

...he pleasure center is located in the limbic system. It is involved in sexual arousal and in the "high" derived from certain recreational drugs . dopamine acts here. Rats with electrodes implanted into their limbic system will self-stimulate in preference over food and will eventually die of exhaustio...

Neurotransmitter

...mitter in cells involved in emotional regulation. dopamine acts as the neurotransmitter of choice for cells ...s. Cocaine , for example, blocks the reuptake of dopamine , leaving these neurotransmitters in the synaptic... , the precursor to dopamine; reserpine prevents dopamine storage within vesicles; and deprenyl inhibits ...
Dopamine in Biological Dictionary

Membrane transporter

...re integral membrane proteins; that is... The dopamine transporter is a membrane -spanning protein t...; DAT provides the primary mechanism through which dopamine is cleared from synapses, transporting dopamine from the synapse into... Disease Related Mem...
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(Date:9/19/2014)... human cancers have abnormally upregulated chemical signals related ... controlled during tumor formation is not fully understood. ... PhD, both researchers in the department of Pathology ... Medicine, University of Pennsylvania, and colleagues report that ... by targeting these pathways. , Lipid second messengers ...
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Breaking Medicine News(10 mins):Health News:New cancer drug target involving lipid chemical messengers 2Health News:Hastings And Hastings Announces a Record Number of Visitors to Its New Phoenix Personal Injury Website 2Health News:Melanoma risk found to have genetic determinant 2Health News:NJ Largest Home Healthcare Not-for-Profit Joins Deutsche Bank to Ring NYSE Opening Bell 2Health News:NJ Largest Home Healthcare Not-for-Profit Joins Deutsche Bank to Ring NYSE Opening Bell 3Health News:Xarelto Makers Seek Dismissal of Cases Brought in Philadelphia, Notes Rottenstein Law Group LLP 2Health News:Xarelto Makers Seek Dismissal of Cases Brought in Philadelphia, Notes Rottenstein Law Group LLP 3
(Date:9/19/2014)... Jimmy Durante of dinosaurs a newly discovered ... new dinosaur, named Rhinorex condrupus by ... Young University, lived in what is now Utah ... Cretaceous period. , Rhinorex, which translates roughly into ... relative of other Cretaceous hadrosaurs like Parasaurolophus and ...
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Breaking Biology News(10 mins):New hadrosaur noses into spotlight 2Soft robotics 'toolkit' features everything a robot-maker needs 2
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