Tag: "neurons" at medical news
Commonly used antidepressants may also affect human immune system
...a manner similar to its transmission between brain neurons
was revealed in mid-October, when the research tea...work. In the brain, serotonin transmission between neurons
is associated with feelings of pleasure, mood, and appetite, and the class of antidepressants known ...
New key brain target of fat hormone
...naling. Even though leptin was known to act on the neurons
of the ARC, wrote the researchers, knocking out leptin receptors in those neurons
caused only mild obesity in mice, compared to the effects of knocking out such receptors throughout ...
In the mind's eye: How the brain makes a whole out of parts
... a human looks at a number, letter or other shape, neurons
in various areas of the brain's visual center resp...ts are signaled or encoded by large populations of neurons
at higher-level stages in the object-processing part of the brain." The report, based on recordings ...
Gene therapy 'turns off' mutation linked to Parkinson's disease
...pha-synuclein from the diseased dopamine-producing neurons
that die in Parkinson's disease. Alpha-synuclein is abundant in structures known as Lewy bodies a diagnostic hallmark of Parkinson's disease. Research has shown that mutant forms of the alpha-synuclein gene, as well as too much alpha- synuclein pro...
Motor symptoms associated with increased risk for future Parkinson's disease
...e JAMA/Archives journals. PD develops over time as neurons
in certain areas of the brain that control muscle movement slowly waste away, according to background information in the article. The degeneration occurs in areas that produce a neurotransmitter known as dopamine. Typical symptoms of PD--including ...
UCLA develops new method to track neuron cell death leading to Alzheimer's disease
...ured the amount of serotonin receptors 1A found in neurons
abundantly present in the hippocampus. In Alzheimer's disease these neural cells die, causing the hippocampus to atrophy and shrink. Impact : This new imaging method may allow doctors to track neuronal cell reductions in the hippocampus in peopl...
Blood flow in brain takes a twist, affecting views of Alzheimer's
...h would starve from a lack of nutrients, since the neurons
depend on the astrocytes for their survival." The ...assumption that more blood flow equals more active neurons
forms the basis for interpretation of sophisticated brain imaging techniques such as PET scans and f...
UCSD team creates model for genetic brain syndrome
... within the cerebral cortex. In the normal brain, neurons
are born adjacent to fluid-filled cavities deep w...ered cortex. When this migration is defective and neurons
stop short of their proper destination, there is an absence of the normal grooves and ridges that ch...
New neurons take baby steps in the adult brain
...ave discovered the steps required to integrate new neurons
into the brain's existing operations. For more tha... lose nerve cells, not gain them, but in fact, new neurons
do form during adulthood in all mammals, including humans, and become a working part of the adult br...
Cedars-Sinai researchers demonstrate a new way to switch therapeutic genes 'on' and 'off'
...at reversing the symptoms and rescuing the damaged neurons
in Parkinson's disease patients. Researchers hope to begin a Phase 1 clinical trial in humans in the near future....
Research clarifies how brain replenishes memory-making molecules
New research on living neurons
has clarified how the brain refreshes the supply o...volve a strengthening of the communication between neurons
in the part of the brain known as the hippocampus. Researchers know that this increased communicatio...
Pular antidepressants boost brain growth, Hopkins scientists report
...sos. Axons are long, filament-shaped extensions of neurons
that, together with myelin, are the main constituents of nerves. Axons conduct chemically driven nerve impulses away from the cell body toward a narrow gap known as a synapse. Among the chemicals involved are such monoamines as norepinephrine and ser...
Brandeis researchers propose model of neural circuit underlying working memory
...making process. Essentially, the study shows that neurons
in the prefrontal cortex fire with greater or less...findings provide a framework for understanding how neurons
operate in a part of the brain that controls behavior and which is often compromised in people with ...
What can change in the brain? Electrical synapses, research shows
...f - strengthening or weakening connections between neurons
or adding or subtracting those connections - allow...ral plasticity. Chemical synapses, junctions where neurons
communicate using chemical substances, have long been implicated in plasticity. Now, for the first t...
Researchers identify key protein involved in neuropathic pain
...tion in the spinal cord, which causes spinal relay neurons
to send an abnormal signal to pain-processing neural networks in the brain, ultimately causing the experience of aberrant pain. The research team hopes that this new information on neuropathic pain can be applied to diagnostics. "Effective pain diagn...
Evidence links cocaine abuse and Parkinson's disease
... called the substantia nigra. This damage made the neurons
more susceptible to MPTP, a toxin known to cause s...ads out into certain other parts of the brain. The neurons
in the SNpc make the neurotransmitter dopamine, and degeneration of this area and the nigrostriatal ...
Growth factor protects brain against damage from stroke
...at did not receive it. Neuregulin-1 also protected neurons
from damage even when administered as long as 13 hours after the stroke's onset. In DNA microarray analysis of the affected brain tissue, Ford and his team determined neuregulin-1 produces its protective effects by turning on or off nearly 1,000 gene...
How the neuron sprouts its branches
Neurobiologists have gained new insights into how neurons
control growth of the intricate tracery of branche...nections are the basic receiving stations by which neurons
form the signaling networks that constitute the brain's circuitry. Such basic insights into neuronal...
UCLA imaging study of children with autism finds broken mirror neuron system
...tem while imitating and observing emotions. Mirror neurons
fire when a person performs a goal-directed action and while he or she observes the same action performed by others. Neuroscientists believe this observation-execution matching system provides a neural mechanism by which others' actions, intentions a...
Tracking the memory trace
...n Drosophila or fruit flies is formed in a pair of neurons
called the dorsal pair medial neurons, but only 30...n odor with an electric shock. The change in these neurons
was immediate, but lasted only five to seven minutes. In the more recent report involving the DPM n...
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