Neurotransmitter
hideNeurotransmitters are endogenous chemicals which relay, amplify, and modulate signals between a neuron and another cell. Neurotransmitters are packaged into synaptic vesicles that cluster beneath the membrane on the presynaptic side of a synapse, and are released into the synaptic cleft, where they bind to receptors in the membrane on the postsynaptic side of the synapse. Release of neurotransmitters usually follows arrival of an action potential at the synapse, but may follow graded electrical potentials. Low level "baseline" release also occurs without electrical stimulation.
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News tagged with neurotransmitter
Researchers Begin to Decipher Metabolism of Sexual Assault Drug
Nov 19, 2009 |
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(PhysOrg.com) -- It’s a naturally occurring brain chemical with an unwieldy name: 4-hydroxybutyrate (4-HB). Taken by mouth, it can be abused or used as a date-rape drug.
Findings could speed the development of drugs for Parkinson's disease
Medicine & Health / Neuroscience
Nov 18, 2009 |
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Australian scientists have significantly advanced our understanding of dopamine release from nerve cells, findings that should speed the development of more effective drugs for treating Parkinson's Disease.
Gene knockout may cheer up mice
Medicine & Health / Neuroscience
Nov 12, 2009 |
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Removing the PKCI/HINT1 gene from mice has an anti-depressant-like and anxiolytic-like effect. Researchers writing in the open access journal BMC Neuroscience applied a battery of behavioral tests to the PKCI/HINT1 knocko ...
Widely used cholesterol-lowering drug may prevent progression
Medicine & Health / Neuroscience
Oct 29, 2009 |
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Simvastatin, a commonly used, cholesterol-lowering drug, may prevent Parkinson's disease from progressing further. Neurological researchers at Rush University Medical Center conducted a study examining the use of the FDA-approved ...
Benefit of memantine in the treatment of Alzheimer's disease not proven
Medicine & Health / Medications
Oct 28, 2009 |
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There is no scientific proof that patients with moderate or severe Alzheimer's disease benefit from drugs containing the agent memantine. This is the conclusion in the final report that the Institute for Quality and Efficiency ...
Why antidepressants don't work for so many
Medicine & Health / Psychology & Psychiatry
Oct 23, 2009 |
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More than half the people who take antidepressants for depression never get relief. Why? Because the cause of depression has been oversimplified and drugs designed to treat it aim at the wrong target, according to new research ...
Now hear this: Scientists show how tiny cells deliver big sound
Oct 22, 2009 |
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Deep in the ear, 95 percent of the cells that shuttle sound to the brain are big, boisterous neurons that, to date, have explained most of what scientists know about how hearing works. Whether a rare, whisper-small second ...
Pushing through brain barriers
Medicine & Health / Neuroscience
Oct 21, 2009 |
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Understanding the inner workings of the brain remains one of the last frontiers in all of neurobiology. A Case Western Reserve University engineering professor is developing a miniaturized low-power device to detect how electrical ...
Understanding the brain's natural foil for over-excited neurons
Medicine & Health / Neuroscience
Oct 19, 2009 |
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Glutamate is to the brain like coffee is to our bodies. A cup of Joe in the morning can wake us, but overloading on caffeine causes the stimulant to work against us.
Fine-tuning treatments for depression
Medicine & Health / Neuroscience
Oct 18, 2009 |
3.5 / 5 (2) |
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New research clarifies how neurotransmitters like norepinephrine, serotonin, and dopamine, are regulated - a finding that may help fine-tune therapies for depression.
Popular antidepressant associated with a dramatic increase in suicidal thoughts amongst men
Medicine & Health / Medications
Oct 14, 2009 |
3.7 / 5 (3) |
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Nortriptyline has been found to cause a ten-fold increase in suicidal thoughts in men when compared to its competitor escitalopram. These findings are published in the open access journal BMC Medicine.
Study supports possible role of urate in slowing Parkinson's disease progression
Oct 12, 2009 |
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By examining data from a 20-year-old clinical trial, a research team based at the MassGeneral Institute for Neurodegenerative Diseases (MGH-MIND) and Harvard School of Public Health (HSPH), has found evidence supporting the ...
Why one way of learning is better than another
Medicine & Health / Neuroscience
Oct 01, 2009 |
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A new study from the Montreal Neurological Institute and Hospital (The Neuro) of McGill University reveals that different patterns of training and learning lead to different types of memory formation. The significance of ...
Researchers find a key mechanism in the development of nerve cells
Medicine & Health / Neuroscience
Sep 29, 2009 |
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Chaos brews in the brains of newborns: the nerve cells are still bound only loosely to each other. Under the leadership of Academy Research Fellow Sari Lauri, a team of researchers at the University of Helsinki has been studying ...
New links among alcohol abuse, depression, obesity in young women found
Sep 22, 2009 |
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(PhysOrg.com) -- There is new evidence that depression, obesity and alcohol abuse or dependency are interrelated conditions among young adult women but not men.
