neurotransmitter

Evidence Links Protein Damage to Neurodegenerative diseases like Parkinson's and Alzheimer's

...come symptomatic due to a deficiency of a specific neurotransmitter - in the case of Parkinson's it is dopamine. When the neurons that produce these chemicals die or become impaired, which occurs with oxidation, the eventual results are tremors and sometimes dementia. New evidence links oxidative damage in a protei...

Action of nerve cells

... the syntaxin protein so it can aid the release of neurotransmitter from one nerve cell to another. When a human or ....The strength of a signal depends on the number of neurotransmitter filled membrane balloons released by each neuron.So the strength of memory depends on how well the ...

Herbs for Rememberance

...some of the memory and concentration with them.The neurotransmitter chemicals dopamine and serotonin can also be affected. Smoking and other drugs can speed up the onset of memory loss, as can prolonged anxiety, grief and negative emotions. Recently some herbal formulations also claim to improve memory.Smriti Rasa...

Dopamine helps stroke survivors

...ed by stroke survivors.Levodopa is turned into the neurotransmitter dopamine in the body, and this may help brain cell...d that amphetamines, which boost levels of another neurotransmitter - noradrenaline (norepinephrine) - helps stroke survivors. Till now, physiotherapy has been the only...

Drug Combinations May Boost Stroke Risk

... include Prozac, Zoloft, and Paxil. Serotonin is a neurotransmitter that is released onto blood vessels by the nerves and can cause the vessels to contract. Other types of medications also increase serotonin levels, although they act through different mechanisms. When combined, these effects could be dangerous. Pati...

The route to fertilization

...ce drug, Viagra. It also functions as an important neurotransmitter in people and is used by white blood cells to kill tumors, bacteria and other invaders....

Researchers trick Alzheimer's Enzyme

... "click chemistry," to make a molecule that blocks neurotransmitter destruction caused by the brain enzyme acetylcholi...ymes identified. It breaks down acetylcholine, the neurotransmitter that propagates nerve signals. Inhibitors of acetylcholinesterase treat the dementia associated with...

How brain works

... the syntaxin protein so it can aid the release of neurotransmitter from one nerve cell to another. When a human or ....The strength of a signal depends on the number of neurotransmitter filled membrane balloons released by each neuron.So the strength of memory depends on how well the ...

Imaging Modality That Might Help Diagnose Depression

...transmitter GABA and high levels of the excitatory neurotransmitter glutamate in the brain appear to be linked to melancholic depression. Researchers say the findings add to mounting evidence that shows, along with serotonin and norepinepherine systems, both the GABA and glutamate systems also contribute to the mecha...

New drug for mental alertness

...tamate receptors. These activate the function of a neurotransmitter called glutamate and enhances the memeory. Because the drug effect only lasts for hours, they have relatively less side effects. The results of the drug test were published in the journal New Scientist....

Drug addiction can be genetical, says study

...h its effect on dopamine pathways. Dopamine is the neurotransmitter connected with the pleasure sensations of the brain.The researchers who had drawn animal parallels had reported that mice deficient in the Clock gene had produced more dopamine when injected with cocaine, much more than the control mice that had the ...

PET Scan find the Area of Brain Responsible for Anorexia Nervosa

...assess the activity of brain dopamine receptors, a neurotransmitter system that is best known for its role in controlling movement. The Dopamine receptors in the brain are usually associated with weight and feeding behaviors and responses to reinforcement and reward. Researchers used a harmless molecule designed to ...

Secret Of Heartbeat Protein Unravelled

...the cell surface. NMDA receptors help usher in a neurotransmitter called glutamate that is essential for learning and memory and also plays a role in drug addiction. A similar scaffolding mechanism is at work in the heart, where it affects basic functions, including the heartbeat. SAP97 is a complex protein made u...

Reaction To ADHD Medication May Be Genetic By Nature

...on the nerve cell membrane that helps to clear the neurotransmitter dopamine from the nerve junction. The researchers had first reported an association of this gene with ADHD 10 years ago. In the new study, they had examined the relationship between the gene and patients' medication response over a four-week period,...

PET scans may help deciding surgery for epilepsy

... a marker that shows deficits in signaling for the neurotransmitter serotonin is more sensitive than the traditional PET measurement of brain glucose. When drugs fail to control epilepsy, brain surgery is often the only remaining therapeutic option. However, identifying the correct spot for surgery has traditionall...

High-Fat Diet Can Ward Off Inflammation In The Gut

...us nerve, which in turn triggered the release of a neurotransmitter called acetylcholine. This bonded itself to the proteins and switched the immune cells off. The study authors say that this pathway may explain why the body does not reject food as a foreign invader. They also feel that it might be useful to activate...

Tiagabine Enhances Sleep Maintenance In Insomnia Patients

...2005) assert that since GABA is a major inhibitory neurotransmitter in the central nervous system and tiagabine increa...increases in slow wave sleep mediated by different neurotransmitter systems....

Therapy inducing self-repair of nerves to help Alzheimer’

... thought to accumulate. Glutamate, which acts as a neurotransmitter that nerves use to communicate at normal concentrations, becomes toxic at excessive levels, resulting in over stimulation of nerve cells, known as excitotoxicity, and causing excessive stress on the nerve cells eventually ending in cell death. How...

Treatment Resistant Tumors Can Be Targeted Better Using Botox

...neurotransmitters). It is hypothesized that this neurotransmitter release inhibition could inhibit neuromuscular contraction of blood vessels that supply the tumor. This could eventually pave way for enhanced tumor perfusion, allowing effective delivery of cytotoxic drugs and oxygen (improves tumor response to radi...

Aggressive Teenage Behaviour: Blame It On The Anabolic Steroids

...ttributed to increased secretion of vasopressin, a neurotransmitter secreted by anterior hypothalamus. Previous studie... fluctuations in vasopressin makes it an important neurotransmitter to target for pharmacotherapy,' concluded the researchers. Let us hope that such studies would eve...

Concerta, Drug Used in ADHD Treatment Less Likely To Result In Abuse

...This molecule accounts for increased levels of the neurotransmitter in the brain. ADHD patients lose control over movement, behaviour and attention, as their brains do not regulate the dopamine levels effectively. Such stimulant drugs though provide control of ADHD symptoms, do have the potential of being abused. ...

Experimental Alzheimer’s Drug curbs the disease in mic

...e is a selective loss of neurons which produce the neurotransmitter acetylcholine. He said that by stimulating the M1 receptor one can boost the acetylcholine activity and AF267B does the stimulation. It was developed by the famous Alzheimer's researcher and study co-author Abraham Fisher, of the Israel Institute for...

Anorexia - Overcoming Hunger Pangs Isn’t Just About Will Powe

...n eating disorder has now been linked to lack of a neurotransmitter that is responsible for stimulation of appetite//....t just about extraordinary will power alone. The neurotransmitter is known to be neuropeptide Y (NPY). The oversupply of NPY makes it hard for obese people to lose we...

Estrogen also a potential neurotransmitter

...ting that estrogen, should also be thought of as a neurotransmitter when acting in the brain. // The study was funded ...ail. They suggested that estrogen in its role as a neurotransmitter helps to regulate male sexual activity and the levels at which pain is perceived. Ball said, “How w...

Meth Addiction On The Rise, US Health Authorities Concerned

...mprove their alertness. The release of dopamine, a neurotransmitter into specific brain areas that regulate feelings of pleasure has been accounted for its stimulant effects. Even when taken at very small doses, it results in a prolonged stimulant effect. Although short-term use of the drug can enhance alertness an...

Link Between Immune System And Nervous System

...R) are docking sites for substance P, a well-known neurotransmitter that plays important roles in both immune function and the nervous system. In the current study, the Douglas team investigated two forms of NK-1R in a human monocyte/macrophage cell line. One was a full-length receptor, the other a shortened versio...

Transporter offers reliable clues for safer pain medicine

... Ganapathy says. This is the case for at least one neurotransmitter – acetylcholine, implicated in Alzheimer’s - which is inactivated by an enzyme, rather than being transported back into the neuron like other neurotransmitters, such as serotonin, which has a role in depression. But when he watched the activity of ...

Origin of obesity may be in brain: scientists

...s of overweight people have more receptors for the neurotransmitter serotonin than those of normal weight, reported online edition of New Scientist. Nurotransmitter serotonin, thought to be secreted by the Pineal Gland, is called a neurohormone because of its specific regulatory effect on the activity of the endocri...

Infant Formula With High Iron Content Packs Brain Disorder

...gra (SN), an area of the brain where dopamine, the neurotransmitter associated with Parkinson’s disease, is made. Excess iron is believed to cause oxidative stress which eventually destroys the neurons which produce dopamine. Iron levels in the iron-fed pups were found to be significantly increased in the SN by two...

Schizophrenia Complicates With Altered Receptor Activity

...eceptor called NMDA, which receives input from the neurotransmitter glutamate. Previous studies at other labs have demonstrated the relationship between erbB4 and NMDA receptor activity and have led researchers to believe that enhanced activity of erbB4 receptors results in a decrease in NMDA receptor activity. Low...

Effect of ADHD Drugs on the Brain - Study Finds

... High-dose stimulants can cause dramatic spikes in neurotransmitter levels in the brain, which can in turn impair atte...wer that question, Berridge and his team monitored neurotransmitter levels in three different brain regions thought to be targeted by ADHD drugs: the PFC and two smalle...

Neurology behind Drinking in Teenagers

...l cells become less responsive than adults' to the neurotransmitter gamma-amino butyric acid, or GABA, which helps induce calmness and sleepiness. This probably explains why teenagers can drink more than adults before they get sleepy enough to stop. However impairment of their cognitive functions is another side ef...

Definite Connection Between Receptor Levels and Cocaine Abuse Reveals PET Imaging

...e number of receptors in part of the brain for the neurotransmitter dopamine – measured before cocaine use begins – an...gests that "other factors, perhaps involving other neurotransmitter systems, mediate the recovery of D2 receptor function." (Source: Eurekalert)...

Varied Applications of Adult Stem Cells to Treat Host of Disorders in Human

...f nerve cells and expressed neuronal proteins. The neurotransmitter glutamate was also present in the cells, but the neurotransmitter dopamine was not detected. Thirdly, about 80% of the stem cells grown in the muscle media differen...

Scientists Uncover The Secret Behind The Speed In Nerve cells Conduction

...membrane, because they have to be ready to release neurotransmitter to the next nerve cell at a moment's notice," said... membrane fusion – the act that opens the door for neurotransmitter to leave the neuronal cell – was inhibited by complexin. "By halting fusion partway, complexin ess...

Study Shows Tomosyn Plays an Important Role in Learning and Memory

...fuse at synapses, thereby regulating the amount of neurotransmitter released. ‘If you remove tomosyn, you get exuberant neurotransmitter release,’ said Richmond. ‘This suggests tomosyn is a negative regulator of release. In other words, ...

Apple Juice May Keep Alzheimer's Away

...rease the production in the brain of the essential neurotransmitter acetylcholine. This in turn helps memory. Neuro...ain. Those results encouraged Shea to evaluate the neurotransmitter effect, as is done in the current study. Medications given to humans with Alzheimer's disease have b...

Anesthesia Drug To Bring Solace To The Depressed

...the brain called glutamate. It's the main excitory neurotransmitter in the brain," he added. Depression , a disabling condition, chronic in nature, affects almost 15 million Americans, that is, 7 percent of the adult U.S. population -- in any given year. 4 percent of these patients take their own lives, resulting ...

Fittest Of Newborn Neurons Survive

...of Nature. The NMDA receptor is activated by the neurotransmitter glutamate, a chemical released by neurons in order to transmit information to neighboring cells. Whenever the receptor picks up a glutamate signal it is stimulated and relays the signal. But for newborn neurons that signal means something else entire...

Drug Improves Memory Loss for Traumatic Brain Injury Patients

...hought to enhance the function of acetylcholine, a neurotransmitter involved in memory and learning. “With an estimated 1.5 million people suffering from traumatic brain injury each year in the United States, rivastigmine shows promising results for these patients with moderate to severe memory loss,” said the stud...

With an aim to cure stuttering

...e and others reveal that there is an excess of the neurotransmitter dopamine in the brains of those who stammer. However, much has to be learnt about the causes and cure. GT...

Women More Prone to Anxiety Disorders than Men

...ists know that estrogen interacts with serotonin—a neurotransmitter involved in regulating moods, sleep, and appetite—but they’re just beginning to tease out the relationship. Girls and women are also more likely than males to be victims of physical or mental abuse, a known risk factor for PTSD. Childhood abuse als...

Rising numbers indicate looming cocaine epidemic

...porarily induces a high but depletes the feel-good neurotransmitter dopamine, which in turn triggers a craving for more of the drug. It is this "drive for the drug," he said, that makes it more likely for someone who has used cocaine once to use it a second time. Gold and his colleagues, including Bruce Goldberger,...

Gene therapy Beneficial in Parkinson's Disease

...result of the death of brain cells that produces a neurotransmitter called dopamine. Dopamine plays a key role in transmitting commands from the brain's muscle-control centers. Same technology was used by both teams for performing gene therapy, wherein a desired gene is inserted into a common virus called adeno-ass...

Pick Apples for Good Neurological Health, Says New Research

...rease the production in the brain of the essential neurotransmitter acetylcholine, resulting in improved memory among mice who have Alzheimer’s-like symptoms. Neurotransmitters such as acetylcholine are chemicals released from nerve cells that transmit messages to other nerve cells. Such communication between nerve...

Substance P May Pre-empt VIP in Regulating Temperature

An elusive neurotransmitter pathway in the skin may have been isolated by Univ...heorized but failed to definitively prove that the neurotransmitter vasoactive intestinal polypeptide (VIP) – when released with the sweat-causing compound acetylcholin...

Depression After Heart Attack Means More Heart Problems

...eek to improve mood by slowing the reuptake of the neurotransmitter serotonin in the brain; the medications have been shown to be safe and efficient in patients with heart disease. Serotonin affects emotions, mood and thought. “In addition, improving social support, establishing a physical exercise regimen and addr...

Synthetic Cannabinoid Could Improve Fertility in Smokers

...ry the cholinergic receptor, which responds to the neurotransmitter acetylcholine," noted Burkman. "Nicotine mimics acetylcholine and binds to the cholinergic receptor." In earlier research, Burkman and colleagues also showed that human sperm contain cannabinoid receptors, which respond to marijuana, as well as natur...

New Compound May Improve Fertility in Smokers

...ry the cholinergic receptor, which responds to the neurotransmitter acetylcholine," noted Burkman. "Nicotine mimics acetylcholine and binds to the cholinergic receptor." In earlier research, Burkman and colleagues also showed that human sperm contain cannabinoid receptors, which respond to marijuana, as well as natur...

Common PTSD Drug is No More Effective Than Placebo

...-2 agonists, which lower the brain’s supply of the neurotransmitter norepinephrine. Neurotransmitters are chemicals that transmit electrical signals between nerve cells. They are responsible for many aspects of behavior. “Norepinephrine is released in the brain during states of excited arousal, and PTSD is associat...

Taste Buds Could Suggest Best Cures For Depression

...hod of treatment by speculating about the probable neurotransmitter in the brain which needs help, whether it// is ser...s found that ‘taste’ does change to alterations in neurotransmitter levels and to fluctuations in moods, - Taste is infact’plastic’, researchers opined. During their ...

Researcher Discovers Target Site for Developing Mosquito Pesticides

...me to both insects and mammals. It breaks down the neurotransmitter acetylcholine, which is a primary neurotransmitter in the brain that is associated with memory and cognition. Dr. Pang, director of Mayo Clinic’s Com...

Mayo Researcher Discovers Target Site for Developing Mosquito Pesticides

...me to both insects and mammals. It breaks down the neurotransmitter acetylcholine, which is a primary neurotransmitter in the brain that is associated with memory and cognition. Dr. Pang, director of Mayo Clinic's Com...

Electrical Activity Alters Language Used By Nerve Cells

...isease, involve problems with neurotransmitters or neurotransmitter receptors,” said Nicholas Spitzer, a professor of ...ns, nerves communicate with muscles by releasing a neurotransmitter called acetylcholine. Spitzer and Laura Borodinsky, who was an assistant project scientist working w...

Prior Experience to Stress Acts as an Immunization

...rollable and uncontrollable stress while measuring neurotransmitter activity and gene expression in cells of the alarm center via chemical monitoring and brain mapping techniques. Increased secretion of serotonin (a mood regulating chemical) and gene expression in the alarm center, as well as the depression-like beha...

Cocaine's Use During Pregnancy May Cause Lasting Cellular Effects

...pecific alterations in brain circuits that use the neurotransmitter dopamine. Additionally, these cocaine-exposed offspring showed attention problems as well as insensitivity to stimulants like amphetamine, suggesting that cocaine exposure had altered the development of the dopamine pathways in the brain. 'In co...

Cocaine During Pregnancy can Cause Behavioral and Neurological Problems in the Child

...pecific alterations in brain circuits that use the neurotransmitter dopamine. Additionally, these cocaine-exposed offspring showed attention problems as well as insensitivity to stimulants like amphetamine, suggesting that cocaine exposure had altered the development of the dopamine pathways in the brain. 'In collab...

UCLA Find Yields Further Insight into Causes of Parkinson’s Diseas

In humans, a dearth of the neurotransmitter dopamine has long been known to play a role in Par...as the death of the neurons that use dopamine, the neurotransmitter long implicated in Parkinson's disease. "We put the mutant parkin in all different kinds of tissu...

Natural Brain Substance Linked to Parkinson's Symptoms

...other signaling system in the brain, driven by the neurotransmitter dopamine, starts to break down. Without enough dopamine, the researchers found, brain cells stop-producing endocannabinoids in the proper amount needed to control movement. Researchers used mice specially bred so that target cells in the striatum ...

Smoking Alters the Human Brain Like Those in Animals Using Illicit Drugs

...e chemical signals outside the neuron, such as the neurotransmitter dopamine, into chemical signals and changes inside the neuron. They found elevated levels of these enzymes in the smokers, but, more interesting, levels remained high, as compared to nonsmokers, in the ventral midbrains of former smokers. This sugges...