Tag: "dendrites" at medical news
Investigating 'brain shrinkage' in alcoholics
...orter and more numerous fibres or processes called dendrites
with many fine branching processes similar to the root system of a tree that allow them to 'talk' with neighbouring neurons, often as many as five to 10,000 at a time." Alcohol appears to be particularly damaging to the "white matter" or "hard wir...
Scientists show how thinking can harm brain cells
...ere impulses pass from neuron to neuron. Injury to dendrites
characterized by swelling or beading, loss of den...egenerative diseases. "We found that disease makes dendrites
more vulnerable to excitotoxicity," said Matthew J. Bellizzi, a researcher and student in the M.D./P...
RNA splicing occurs in nerve-cell dendrites
...School of Medicine have discovered that nerve-cell dendrites
have the capacity to splice messenger RNA (pre-mRN...s successful in showing that splicing can occur in dendrites
because they have employed very sensitive technologies developed in their lab, which permits the det...
Synaptic connections need nurturing to retain their structure and keep outsiders at bay
...s of granule cells and they form synapses with the dendrites
of Purkinje cells. The investigators showed that g... However, the specialized regions of Purkinje cell dendrites
that participate in the synapse (postsynaptic spines), were still present in normal numbers. But the...
How the neuron sprouts its branches
...growth of the intricate tracery of branches called dendrites
that enable them to connect with their neighbors. ...ought these remote structures we had discovered in dendrites
called Golgi outposts might play a role." The researchers studied the dendritic growth process in py...
Research clarifies how brain replenishes memory-making molecules
...t the cell body and then migrate along the arms or dendrites
of the cell to synapses, rather than moving within the cell to the synapse as had been thought. The scientists suspect the trafficking process their research revealed also occurs during learning and memory formation, but at a much faster rate. The...
Researchers find molecule that may hold key to learning and memory
...eases, and psychiatric disorders. Though axons and dendrites
can be easily spotted waxing and waning under the ...ternalizing glutamate receptors, which occurs when dendrites
are being disassembled. SynGAP works to turn off the synapse-promoting ras gene. Bonni and his colle...
Different forms of amyloid beta in Alzheimer's disease harm neurons in different ways
...e fibrillar form slowly degenerated. The axons and dendrites
in the cells became twisted and rendered the cell functionally useless. For the most part, however, the cells did not die. According to the scientists, previous research has shown that the brain levels of soluble amyloid beta appear to correlate bett...
Nanowire arrays can detect signals along individual neurons
...ate, and inhibit nerve signals along the axons and dendrites
of live mammalian neurons. Harvard chemist Charl...een ultra-fine silicon nanowires and the axons and dendrites
projecting from nerve cells: Nanowires, like neuronal offshoots, are just tens of nanometers in widt...
Limiting stroke damage is focus of study
... "This is what is happening in the ischemic core; dendrites
get beaded, spines are lost and synapses are proba...al imaging to monitor changes in neurons and their dendrites
and spines following a stroke, and pharmaceuticals including an antibiotic and an anesthetic to tr...