neurons

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

...n 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 protein found in nerve cells to the development of degenerative dise...

Alzheimer cure

...brain cells called the basal forebrain cholinergic neurons shrivels and dies. The brain chemical, acetylcholine, which these neurons produce, is lost and, since it is involved in learning and memory, results in cognitive decline. I...

Action of nerve cells

...animals, the nerve cells must communicate with the neurons by releasing chemicals called neurotransmitters. ...aring a sound or remembering something millions of neurons are sending signals in the form of neurotransmitters,Jorgensen said.The strength of a signal depends...

Ecstasy shrinks brain!!-researchers unveil the secrets of MDMA.

...l consequences of MDMA-induced damage of serotonin neurons to emerge.And now the question is how long MDMA-induced brain damage persists and the long-term consequences of that damage,for the researchers to investigate in the days to come....

Creating brain cells from bone marrow

...hat's lacking in depression. The hope is to create neurons that would produce dopamine, which is depleted in Parkinson's disease, as the basis for a brain implant using the patient's own bone marrow. This would sidestep ethical and technical problems around using embryonic stem cells....

Drug Combinations May Boost Stroke Risk

...levels of serotonin in the blood by preventing the neurons from "reabsorbing" serotonin it has already released. Commonly prescribed SSRIs 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...

Microchip gives blind a chance of sight

...nt works for eye diseases in which healthy retinal neurons remain intact after they lose use of the eye’s photoreceptors.// These receptors convert images into electric impulses. Researchers reported that tests show faces can be recognised and words in large type can be read. Human tests started recently.Dr....

Microchip gives blind a chance of sight

...nt works for eye diseases in which healthy retinal neurons remain intact after they lose use of the eye’s photoreceptors. These receptors convert images into electric impulses. Researchers reported that tests show faces can be recognised and words in large type can be read. Human tests started recently. Dr...

Nose plug: switch that stops smelling

...ose’ of odour receptor cells.The main job of these neurons is to detect smells and send that information to the brain as an electrical signal. The ‘nose’ is really a channel in the neurons’ membrane that opens when an odour is presented and closes as the neuron becomes desensitised to that smell.By measuri...

How brain works

...animals, the nerve cells must communicate with the neurons by releasing chemicals called neurotransmitters. ...aring a sound or remembering something millions of neurons are sending signals in the form of neurotransmitters,Jorgensen said.The strength of a signal depends...

Cell transplants used to fend off Parkinson's symptoms

...r cells produce dopamine, normally manufactured by neurons in the brain. Levels of dopamine steadily decrease as Parkinson's progresses. This is the first human intracerebral retinal cell implantation study in the world and we are encouraged by the results so far. In the implantation procedure, doctors use ...

Clotting Protein plays a role in nerve repair

...ocess, he explained. The presence of fibrin tells neurons and supporting cells that there has been an injury. But the repair process does not start until the injury is resolved and fibrin stops leaking in from the blood. Strickland pointed out that just as it would not make sense to refinish a damaged floor...

Scientists locate key hormone involved in appetite control

...e shown that the hormone activated the specialized neurons in the hypothalamus involved in weight regulation. Ghrelin is a hormone produced in the stomach with the ability to stimulate feeding when introduced to specialized weight regulating brain cells called neuropeptide Y neurons. Lead author Michael Cowl...

Delaying Parkinson’s Diseas

...rkinson’s disease is characterized by the death of neurons in the brain. The result is a loss in motor function. Some NSAIDs appear to be protective in animal studies and they also are shown to reduce the risk of Alzheimer’s disease in humans. This study looked at the results of two previous studies. The tw...

New Findings Could Reduce The Extent Of Spinal Cord Injuries

...ich is significant to people because loss of motor neurons means paralysis say specialists . Cells produce proteins called Hsc70 and Hsp70 that help protect them from death when they are exposed to heat, injury or any other stresses that threaten their normal function.This is a way cells have of protecting...

A Better Understanding Of The Brain Network

...mands. Stroke or traumatic brain injury results in neurons taking over for the damaged ones. But until now, scientists were not sure which neurons compensated for the damaged ones or how the brain cells learned their new jobs. For the study 17 he...

Diabetes and Alzheimer’s linked to each other

...IGF I and IGF II were produced in the nerve cells, neurons in several brain regions. Brain tissue from people who had died from Alzheimer’s disease was also examined .It led to the of lower-than-normal levels of insulin and the growth factors in areas of the brain known to be involved in the development of ...

Can There Be A Diabetes Type III?

...ad found that insulin and IGF are all found in the neurons of some areas of the brain. When the level of insulin production drops, the brain cells degenerate to showcase early symptoms of Alzheimer's. This fall in insulin level do not correspond to any form of diabetes. Scientists are of the opinion that ...

Bright arctic lights to cause headaches

...such attacks, suggests the study, may lie with the neurons of the occipital lobe of the brain that is the seat of vision. The neurons here becomes hyper excitable for people with migraines and easily triggers the condition. The light...

Brain mapping technique to explain sleep

...kes them inactive, and hence animals sleep. These neurons produce a chemical called orexin that keeps the an...ts of the study feel that how the orexin-producing neurons connect to other neurons, is the fact that will perhaps be able to explain how when a person gets up...

Brain cells associated with insomnia and obesity

...of these cells. The cells, which have hypocretin neurons that correlate with the arousal and alertness, have been found in a excitable condition in mice with a unique organization of inputs that make the excitatory nerve junctions outnumber inhibitory contacts by almost ten times. In human beings these ce...

New ways developed to understand dyslexia

...ry and social adjustment. Misinformation send by neurons are what causes the problems of perception in dyslexic children. They are unable to filter the sound and the sight from the ‘noise’ that seems to affect their ability to perceive correctly. Using a new approach, researchers had tried to find out if...

New insight for dopamine transporter

...ansporter mediates the acceptance of dopamine into neurons and is often the target of various drugs targeting the functions of the systems activated by it. The new study found out that one gene may be associated with several disorders like substance abuse, tobacco smoking and ADHD by altered levels of centr...

Language development linked to Foxp2 gene

...is gene can cause disruptions in the maturation of neurons in the development of the cerebellum that is responsible for coordination of voluntary muscular movements like speech etc. Researchers are hopeful that this study may open ways for establishing links between the Foxp2 gene and autism in children. ...

Cure For Deafness Leads Scientist To Find How Fishes Can Hear And Hum Sounds At Same Time

...and that mechanism very well. Observing what these neurons do may offer insights into what leads to hearing deficits." Only a few fish vocalize, but male plainfin midshipman fish hum to attract a mate or grunt when stressed. During the mating season, houseboat owners in San Francisco Bay have often complai...

Gene mutation identified for inherited pain syndrome

...ition. The genetic mutation makes the pain sensing neurons to be hyper excited and trigger rapids signals even at lower than normal stimulating sensations. Primary erythromelalgia is a disorder where the symptoms are intense burning pain felt in the hands and feet. The other symptoms of the condition are re...

New Insight To The Role Of Peptide Signals

...f University of Edinburgh report that hypothalamic neurons use the chemical signals of 60 types of peptides t...here is a system in which the alpha-MSH generating neurons play an important part in controlling the sex drive of the animals. The research suggests that it is...

Wearing High Heels May Be Dangerous To Health

...ansporter mediates the acceptance of dopamine into neurons and is often the target of various drugs targeting the functions of the systems activated by it. For more information read: http://www.medindia.net/patients/ patientinfo/schizophrenia.asp...

Research Finds How Post-traumatic Stress Leads to Long-Lasting Memories

...which then increases a protein called "Arc" in the neurons in the hippocampus, a part of the brain involved in processing and enabling the storage of lasting memories. The researchers believe that Arc helps store these memories by strengthening the synapses, the connections between neurons. "Emotionally ne...

Sleep Apnea Related To Death And Loss Of Brain Cells

...beings, and this function is enacted by a group of neurons called preB?tC neurons. Researchers had given rats a cell specific compound targeted to kill half or more of the preB?tC neurons. The results showed that rats stopped breathing when they where in their first stage of sleep characterized by rapid eye...

Scientists crack mechanism of Leptin-Obesity Hormone

...n activates brain cells called proopiomelanocortin neurons and also binds to the receptors on a second type o...sm of leptin action on two interconnected types of neurons was previously unknown. This mechanism may be an important of the brains ability to maintain...

Studying brain anatomy without surgery

...suring the scattering , we can determine where the neurons are firing. By this way one can simultaneously detect both blood profusion and neural activity and this technique can be used in many diagnostic, prognostic and clinical applications. Gratton said, that it could be used to monitor recovering stroke ...

Brain Cell Repair Loss disclosed

...round them. These long and short branches are what neurons use to talk with one another. Since axons are long...age from injury or disease involve axons. Although neurons in the arms and legs can regenerate axons incredibly efficiently, the ones in the brain and spinal c...

Astrocytes Found To Cause Epilepsy

...urs when the brain chemical, glutamate, stimulates neurons to act in an uncontrolable way leading to seizures...as been focussed on the brain cells and not in the neurons and this new study will open new avenuses for the pharmacological treatment of epilepsy. Neurologist...

Learning process to be regulated by altering brain protein

...ation of a new biochemical switch that affects how neurons fire in a part of the brain associated with learni...on in the primary function of Apoer2, from guiding neurons in the embryonic brain to regulating synaptic signaling, occurs around the time of birth. A small st...

Brain Chemical Identified For Drug Dependent Behavior

...d with food or drug reward, the more activated the neurons become. In rats that had their drug-seeking behavior extinguished, the preference for drug-associated cues was reinstated by chemically activating these cells and orexin production. These data suggest that this brain system may be involved in the dev...

Brain functioning not hampered by old age

...he white matter. Grey matter of the brain contains neurons and the white matter helps in connecting the left and right lobes of the brain for good functioning of the brain. Using effectively the white matter (front lobe) of the brain helps in good brain activity and an old brain can think and work as a teena...

Scientists breaking theory of cortex formation

...he cerebral cortex is a sheet of around 10 billion neurons divided into distinctly separate areas that process particular aspects of sensation, movement and cognition. To what extent are these areas predetermined by genes or shaped by the environment? The protomap and protocortex theories developed before 19...

Research Targets treatment for dementia and brain injuries

...e the brain's ability to regenerate nerve cells or neurons is known to degenerate with age. The study by Dr Natalie Bull and Professor Perry Bartlett, from The University of Queensland-based institute, features on the front cover of the prestigious Washington-based Journal of Neuroscience. Dr Bull's and ...

Alzheimer's a new type of diabetes: Study

... able to target the disease early, further loss of neurons could be prevented. However, they add that the resistance of its receptors in the brain, along with the loss of insulin will have to be targeted. The researchers also found that acetylcholine deficiency, a hallmark of the disease, that is also asso...

Bisphenol A In Food Containers Has Adverse Effect On Brain Tissue

...rogen, which increases the growth and viability of neurons resulting in damage to the brain cells. Experiments on rat brain neurons revealed that damage occurred within minutes even at very low doses. It was proved to increase breas...

An insight in to the memory pattern

... in Drosophila is formed in the dorsal pair medial neurons only after 30 minutes mediated by the gene amnesiac but lasted for two hours, but in the earlier reports the changes were immediate an lasted for five to seven minutes. This experiment is first of its kind done by Davis and his colleagues. Memory ...

Food packaging with Bisphenol A damages the brain

...,' said Dr. Belcher. Oestrogen’s actions on these neurons appear to be a double-edged sword,' he said. "During certain periods of development oestrogen can kill specific subsets of neurons, but at a later developmental stage it actually appears to increase their viability.' Disruption of either of these act...

Early Intervention Required For The Hearing Impaired

...ing. "When sound reaches the implant and the fine neurons of the cochlea, they decode the sound and send it ... cochlea is bypassed by the implant and the intact neurons are stimulated, hearing can be restored. But the implants do not come cheap - the most economical m...

Bisphenol A in plastics affects brain

...estrogens which is required for the development of neurons which leads to inactivity in the specific subsets of neurons which are required for the survival of maturing neurons in the brain region causing disruption of no...

Excess Cdk5 Enzyme Can Harm Brain

...nzyme also plays an important role in the death of neurons in disorders like the Alzheimer's disease. According to the researchers' studies, increased levels of Cdk5, as well as increased levels of a regulatory protein called p25 that is known to hyper-activate Cdk5, had been found in the brains of patient...

Brain cells by millions die during a stroke

...s, each minute of an untreated stroke, 1.9 million neurons die, resulting in the loss of 14 billion synapses ...ogy did not exist to precisely count the number of neurons lost with each passing minute that the blood supply is interrupted to the affected region, says Dr S...

Stroke Destroys Nearly 32, 000 Neurons In Just A Second!

... on stroke has highlighted that more than// 32,000 neurons (brain cells) die in just a second following an acute episode of stroke. In addition, nearly 14 billion synapses (connections between nerve cells) and myelinated fibres approximating to 7.5 miles are lost in just a single minute following the attack....

Golgi Orientation controls Neuron Growth

... neurons//. The dendrite cells are the branches of neurons that are responsible for transmission and collecti... understand the mechanism of growth and control of neurons and on the mechanism of transfer of molecules for the growth of dendrites. Source: Eurekalert....

Mirror Neurons Connected To Autism

...ay also have a part to play in autism. A system of neurons is known to exist in the human brain which special...e watching another person. Malfunctioning mirror neurons may have a role in autistic children's social isolation, according to the Nature Neuroscience Journa...

Human neurons grown in the brains of mice

...Institute for Biological Sciences in La Jolla, the neurons were formed in the brains of mice that had been in...rders develop out of the mysterious interaction of neurons and their surroundings. The question is whether a diseased environment influences nondiseased cel...

Worms Learn To Choose Their Diet

...ria (both harmless and pathogenic ones).It has 302 neurons totally which can be mapped to individual behaviors. The genes responsible for the nervous system to function are very similar to that of humans. Worms like humans make mistakes and learn from them. Worms feed on the bacteria present in the soi...

OHSU Researchers Announce New Discovery

...n be manipulated, there is now a way of generating neurons which can be utilized for replacing lost cells. Si...e brain to replace the lost cells. Damaged motor neurons in the case patients with brain injuries can also be replaced as a result of the research. The Chris...

Protein Fragments Blocking Cures Alzheimer's Disease

... providing the glucose present in the brain to the neurons causing brain cell death. The apoE protein consisted of 299 amino acids and is responsible for causing neurotoxicity. The researchers feel that the apoE protein is responsible for mitochondrial dysfunction and instability and the researchers feel th...

Stem Cell Treatment For Children With Brain Injury To Be Initiated

...area in the brain followed by differentiation into neurons and induce repair in animal models has offered a n...f differentiating into bone, cartilage, fat cells, neurons and hematopoietic stem cells capable of differentiating into blood cells. This would be followed b...

More The Usage More The Growth In The Adult Brain.

...cower Institute for Learning and Memory shows that neurons tend to grow in the adult brain. This proved that ...various techniques that could induce growth in the neurons of the adult brain. There are many approaches like the genetic or the sensory or by other ways that ...

Chemical Signaling Helps Regulate Sensory Map Formation In The Brain

...perimental evidence for a decades-old model of how neurons establish distant connections in a way that can co... of neuronal connection where the spatial order of neurons of one part of the nervous system is `copied’ onto another—as "topographic mapping." The term descri...

Weizmann Institute of Science says Immune Cells Could Help Maintain Brain Function

...elieved that the brain possessed a fixed number of neurons that do not regenerate if they die or degenerate. But recent research has highlighted the fact that certain areas in the brain do possess the ability to regenerate neurons. One such region is the hippocampus, which is believed to be the seat of memor...

Novel Protein, Staufen2 Important In Maintenance Of Nerve Synapses

...ain. // In simple terms, the junction between two neurons is referred to as a synapse. It serves as a gateway of communication between the same. Storage and transmission of information occurs through these specialized contact sites. This synaptic connection is of great importance in the process of learning ...

microRNA And Its Role In Synaptic Regulation

...is causes the growth of the dendritic spines. When neurons were exposed to a growth factor, brain-derived neurotrophic factor (BDNF), Limk1 became active again, enhancing spine growth. Greenberg believes that the microRNA are responsible in controlling synaptic development. A single neuron can give rise to...