Not exact matches
By using a method like Pick Up, Put Down
neurons link together
into circuits controlling learning, memory, and social behavior, according to Science News, and in turn, the method affects where
neurons end up and the connections they form.
Leptin circulates in the blood and crosses
into the brain, where it is sensed
by leptin receptors expressed on
neurons in the hypothalamus.
To transmit electrical signals along a
neuron, a strong difference in charge between the interior and exterior of the cell is needed, which is created
by pumping positive ions
into the cell.
Using a high - resolution analysis of how individual
neurons and their connected brain networks processed this touch information, designed
by neurocomputational scientist Alberto Mazzoni and physics scientist Anton Spanne, the groups got an unexpected insight
into the brain representations of the external world experienced through touch.
Nusinersen, which is injected
into the spine and works
by temporarily enabling SMA patients to make more of the survival motor
neuron protein, is one of the most expensive drugs on the market.
We already knew that the brain is constantly adapting throughout our lives, for example
by generating new
neurons well
into adulthood.
The bacteria, when injected
into mice, activate a set of serotonin - releasing
neurons in the brain — the same nerves targeted
by Prozac.
When the researchers tracked the stem cells in the mice's brains, they saw that only about 5 percent of them actually developed
into neurons, suggesting the cells did not rescue memory
by replacing dead
neurons, LaFerla says.
To visualize this activation, a needle - thin glass lens was inserted
into the hypothalamus, and images of flashing
neurons were recorded
by a miniature, portable microscope attached to the mouse's head.
There, the cells differentiate
into interneurons, an important subcategory of
neurons that are called «inhibitory» because they tamp down firing
by «excitatory»
neurons.
In addition to helping understand disease
by providing more powerful study models, «what this technology would allow you to do is reprogram a skin cell, for example, from a Parkinson's patient...
into a pluripotent cell and then in a petri dish redirect that cell
into... a
neuron» to treat that patient.
Once the
neuron stably incorporates both types
into its membrane, it can be excited
by blue light and subdued
by yellow.
The cells were put
into a special culture and then suspended in a gel and stimulated
by nutrients, all geared to turn them
into neurons like those found in the cortex.
They then induced Parkinson's symptoms in laboratory rats
by killing the rodents» dopamine - producing
neurons with toxins, and injected the viruses
into the damaged tissue of some of the animals.
Normally, pain is triggered
by a set of danger - sensing
neurons, called nociceptors, that extend
into the organs, muscles, and skin.
A study in the International Society for Stem Cell Research's journal Stem Cell Reports, published
by Cell Press on November 20 shows that a Sox2 protein, alone or in combination with another protein, Ascl1, can cause nonneuronal cells, called NG2 glia, to turn
into neurons in the injured cerebral cortex of adult mice.
Zheng, together with Leah Boyer, then a researcher in Gage's lab and now director of Salk's Stem Cell Core, generated diseased
neurons by taking skin cells from patients with Leigh syndrome, reprogramming them
into stem cells in culture and then coaxing them to develop
into brain cells in a dish.
The results obtained
by Afsaneh Gaillard's team and that Pierre Vanderhaeghen at the Institute of Interdisciplinary Research in Human and Molecular Biology show, for the first time, using mice, that pluripotent stem cells differentiated
into cortical
neurons make it possible to reestablish damaged adult cortical circuits, both neuroanatomically and functionally.
«Our study suggests that direct current stimulation can compensate somewhat for the loss of dopamine
by decreasing the effort the brain has to put
into getting its motor
neurons to fire,» adds Shadmehr, the senior author of a report on the research published online in The Journal of Neuroscience on Sept. 2.
The researchers implanted stem cells from mouse embryos
into the brains of rats and mice whose dopamine - producing
neurons had been obliterated
by a toxin.
I wouldn't say that we have provided any great insight
into that, other than to say that
neurons acquire the ability to grow that extensive distance
by virtue of their genetic profiles.
By observing the cells in action and over time the team showed how most stem cells divide only for a few rounds before they mature
into neurons.
Many antidepressants that target serotonin work
by blocking serotonin transporters that reabsorb the neurotransmitter
into a
neuron, so it can be reused after it has sent a chemical signal.
Belgian researchers have identified a new strategy for treating an inherited form of dementia after attempting to turn stem cells derived from patients
into the
neurons most affected
by the disease.
By using «artificial
neurons» — essentially lines of code, software — with neural network models, they can parse out the various elements that go
into recognizing a specific place or object.
Excited
into action
by the electrical charge,
neurons communicate with each other and with muscles to create movement.
They did this
by packaging CasRx
into a virus and delivering it to
neurons grown from an FTD patient's stem cells.
When methamphetamine is administered after a period of withdrawal, however, the dopamine released
by the midbrain
neurons has the opposite effect on the acetylcholine cells, prompting them to release the chemical
into the striatum.
The cell culture experiments showed that MAbs prevented the uptake of misfolded α - syn fibrils
by neurons and sharply reduced the recruitment of natural α - syn
into new Lewy body aggregates.
The approach used
by Carleo and his collaborators takes this
into account
by using a layer of «hidden»
neurons, which allow the computer to encode the correct quantum state in a much more compact fashion.
He mentioned mouse studies
by Chris Fiorillo, now at the Korea Advanced Institute of Science and Technology (KAIST), who inserted genetic sequences that code for a light - sensitive protein called channelrhodopsin - 2
into dopamine - producing
neurons of mice.
«In this study, we showed that
by just doing a rearrangement of the top electrode
into a fractal geometry then we can stimulate the
neurons within the open - circuit voltage of silicon photodiodes.»
Another unexpected discovery, Dyer said, was the point during development when the immature cells transition from making new tissue
by dividing rapidly, to differentiating
into a mature retinal
neuron.
Finally, they showed that they could cure the inflammation
by transplanting gut
neurons from healthy fish
into the diseased fish.
The
neuron pathways activated in the moths were tracked
by inserting a 16 - channel electrode
into the moth's antennal lobe, where the moth processes odor information from its antennae.
A new paper published in
Neuron by a team of neurobiologists led
by Professor Andreas Nieder at the University of Tübingen gives insight
into just how the brain manages this problem.
«Interestingly, even the slightest manipulation of this balance changes the pattern of blood vessel growth, causing the blood vessels to grow
into the motor
neuron region prematurely,» explains the first author of the study, Patricia Himmels, a doctoral candidate in the research group led
by Dr Ruiz de Almodóvar.
«
By blocking this message, the mutant GlyRS enzyme causes the motor
neurons to go
into decline and even die, which breaks the connection between the brain and the muscles in the limbs.»
But it also damages
neurons that don't lie directly in its path, because it is trailed
by a pressure wave that transfers the energy of bullet
into the surrounding brain tissue.
But a broad range of brain disorders may be treatable
by blocking astrocytes» metamorphosis
into toxic cells, or
by pharmaceutically countering the
neuron - killing toxin those harmful cells almost certainly secrete.
By taking measurements on each side of a synapse leading
into the cerebral cortex, the team could measure when
neurons were firing, the strength of the signal and the signal - to - noise ratio.
Recent research
by neuroscientist Fred Gage and colleagues at the University of California (UC), San Diego, has shown that one of the most common types of jumping gene in people, called L1, is particularly abundant in human stem cells in the brain that ultimately differentiate
into neurons and plays an important role in regulating neuronal development and proliferation.
So - called hair cells in the inner ear convert sounds
into neural signals that are relayed to the brain
by spiral ganglion
neurons, the study notes.
These problems are caused
by a type of white blood cells called T cells that, after becoming activated, find their way
into the brain and attack the protective covering — myelin — of
neurons in the brain and spinal cord, causing inflammation and damage to the central nervous system.
These, such as verapamil, diltiazem, nifedipine, nitrendipine and nimodipine are not only widely used to treat hypertension, and hence might affect cognition
by increasing cerebral blood flow, but also block the entry of calcium ions
into neurons.
In the paper, publishing September 26 in the ISSCR's journal Stem Cell Reports, published
by Cell Press, iPSCs from nonhuman primates successfully developed
into the
neurons depleted
by Parkinson's disease while eliciting only a minimal immune response.
The researchers, led
by Fred Gage at the Salk Institute for Biological Sciences in La Jolla, California, were investigating how neural stem cells decide whether to turn
into neurons or support cells.
Cocaine and methamphetamine affect the brain
by blocking the normal transport of dopamine back
into neurons.
Many cells lit up, and when the researchers took a closer look, they found that L1 jumped
into several genes typically expressed
by neurons.
By implanting electrodes
into the somatosensory cortex — the brain region that registers touch — Brecht and his team have identified the
neurons that activate physical responses to tickling (Science, doi.org/bsxv).