Tag: "neurons" at medical news
Chemical used in food containers disrupts brain development
...aled that near-maximal effects of BPA on rat brain neurons
not only occurred "at surprisingly low" doses of 0...d estrogens could control the survival of maturing neurons
in the brain region involved in movement and coordination, Dr. Belcher and his co-workers found the ...
JCI table of contents: December 1, 2005
...ust how these specific glial cells then connect to neurons
within the brain to relay information about glucose level, which then prompts glucagon secretion, remains unknown. TITLE: Regulation of glucagon secretion by glucose transporter type 2 (glut2) and astrocyte-dependent glucose sensors AUTHOR CONTACT:...
Specialized neurons allow the brain to focus on novel sounds
...panish and American neuroscientists has discovered neurons
in the mammalian brainstem that focus exclusively ...ogy professor at the University of Washington. The neurons
can detect changes in the pitch, loudness or duration of a single sound and can even detect changes ...
Disruption of gene interaction linked to schizophrenia
...ase of glutamate at synapses formed by CA3 and CA1 neurons
in the part of the brain called the hippocampus. These synapses are routinely used as models of specific types of brain activity responsible for learning and memory. A synapse is the gap between an incoming nerve and its target cell across that gap. ...
Hormone aldosterone is promising target for stroke treatment
...roke, emerging evidence suggests aldosterone helps neurons
survive. "This is still a very big 'perhaps,' but perhaps at the time of a stroke, it may be beneficial, but only within the brain," Dr. Dorrance says of high aldosterone levels. "There is a huge caveat because aldosterone does not get into the brain...
New 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 Pr...
Researchers reveals how certain chemicals protect the brain against cell damage
...ed neurotoxicity, Dor and his team incubated these neurons
with freshly dissolved A1-42 protein for 48 hours.... investigate the effect of PGE2 on A1-42 toxicity, neurons
were co-treated with A1-42 and different concentrations of PGE2. Results showed that PGE2 significan...
Brain morphing technology simplifies the surgical treatment for movement disorders
...ectrode and monitor the electrical activity of the neurons
that it touches. Sometimes they have to remove and reinsert the electrode two or more times. Sometimes they have to insert three or four electrodes at the same time in order to find the elusive spot. "I tell patients that it is something like playing...
Early experience may shape our sensory perceptions
...r perceptions. The researchers studied individual neurons
in the neocortex of cats to see how they respond t...d touch. Surprisingly, they found that many of the neurons
could respond to stimuli in several of these senses. "The neurons
responses to combinations of sens...
Brain scan, cerebrospinal fluid analysis may help predict Alzheimer's disease
...ool of Medicine in St. Louis. "Up to 30 percent of neurons
in vulnerable areas are already dead, and you can't get them back. So finding markers that can help us identify patients prior to symptoms is really our big push now." With colleagues Mark Mintun, M.D., professor of radiology, and David Holtzman, M....
Jefferson scientists show protein in heart and adrenal gland plays critical role in heart failure
...hat GRK2 was increased.According to Dr. Koch, when neurons
release catecholamines, a feedback system that works through alpha 2-adrenergic receptors "is the brake on the system." They foundthat mice in heart failure had high levels of GRK2 in the chromaffin cells in the adrenal gland, which caused the downre...
Neurons generated in the adult brain learn to respond to novel stimuli
...ent from that of older neurons. The new olfactory neurons
are especially sensitive to novel stimuli, prefere... of flexibility suggests that such newly-generated neurons
could be induced to adapt to and integrate into other regions of the brain, perhaps allowing them to...
'Sharp' older brains are not the same as younger brains
... to young rats in some of the basic machinery that neurons
use to encode and store information in the brain," said Gallagher, who collaborated with Alfredo Kirkwood and Sun Seek Min of Johns Hopkins' Krieger Mind/Brain Institute and Hey-Kyoung Lee, now of the University of Maryland College Park. Lee was a re...
Cord blood cells may widen treatment window for stroke
...rmally. "These findings show we are able to rescue neurons
at a time when most research suggests they are already dead." Dr. Willing presented the preliminary findings Nov. 12 at the Society for Neuroscience annual meeting in Washington, DC. The only drug currently approved for ischemic stroke treatment is t...
MIT researcher presents new view of how the cortex forms
...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...
RNA splicing occurs in nerve-cell dendrites
...een cells of the nervous system, allowing for many neurons
to connect with each other to form a network. Dend...lure in protein regulation or proper expression in neurons
may give rise to cognitive dysfunction. "Most neurodegenerative and psychiatric illnesses exhibit de...
Johns Hopkins celebrates its first century of neuroscience
...s are measuring electrical signals from individual neurons
in a laboratory dish to study how they react to different stimulation. Four major areas of investigation occupy the time of brain scientists at Hopkins: Cellular and Molecular Neuroscience; Systems, Cognitive, and Computational Neuroscience; Develo...
New findings help explain how brain pathways control body weight
... coauthors set out to identify the exact groups of neurons
responsible for producing these important effects ...dala were controlling food intake, while MC4Rs on neurons
elsewhere in the brain were controlling energy expenditure. "When the MC4R was reactivated only in t...
Scientists show how thinking can harm brain cells
... of memories, these impulses can inflict injury on neurons
and disrupt neurologic function. Understanding th...ists focused on dendrites, the crooked branches of neurons
that carry impulses toward the body of the nerve cell, and synapses, the places where impulses pass ...
Lipids play important role in nervous system development
...ions they need to wire the body and may even cause neurons
to die, researchers have found. The researchers hope this piece of the puzzle of how the central nervous system develops in the first place will one day help them repair loss from injury or disease. It's already helped them understand the ailments of...
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