Fecal transplants could one day be used as a therapy to restore cognitive function in the elderly—according to new research from the University of East Anglia, the University of Florence and the Quadram Institute.
A new study published today shows how fecal transplants from older to younger mice altered their gut microbiome, which in turn impacted their spatial learning and memory.
Researchers have identified a bio-chemical circuit that supports neuron-microglia communication. When neurons are active, they release ATP. Microglia sense extracellular ATP and the compound draws the immune cell toward the neuron.circuit that supports neuron-microglia communication. When neurons are active, they release ATP. Microglia sense extracellular ATP and the compound draws the immune cell toward the neuron.circuit that supports neuron-microglia communication. When neurons are active, they release ATP. Microglia sense extracellular ATP and the compound draws the immune cell toward the neuron.
Han from WrySci HX gives you a few different reasons why Neuralink is not quite as scary as you may think, especially if you’re not super familiar in the brain machine interface area. Share with a skeptic! More below ↓↓↓
Stem cells are a promising experimental treatment for a variety of diseases. Now researchers at the University of Wisconsin-Madison have found that transplanting neurons grown from stem cells into the brains of mice with Parkinson’s disease repaired the damaged brain circuits, improving the animals’ motor skills.
In people afflicted with Parkinson’s, neurons that produce dopamine begin to break down and die. The disease gradually presents as tremors, involuntary movements, and trouble with walking, speaking and other actions. While it currently can’t be cured, studies are suggesting new ways to slow progression and reduce severity of symptoms through new drugs or repurposed old ones, deep brain stimulation or probiotic treatments.
But an emerging and potentially ground-breaking treatment involves stem cells. In several studies, researchers have used stem cells to grow new dopamine-producing neurons, and then transplant them into animals. And now the UW-Madison team’s work has shown that doing so can help restore brain circuits damaged by Parkinson’s.
Summary: Novel technology allows researchers to understand how a fruit fly’s brain processes color.
Source: University of Minnesota
Through the development of new technology, University of Minnesota researchers have developed a method that allows scientists to understand how a fruit fly’s brain responds to seeing color. Prior to this, being able to determine how a brain responds to color was limited to humans and animals with slower visual systems. A fruit fly, when compared to a human, has a visual system that is five times faster. Some predatory insects see ten times faster than humans.
Some people are at higher risk of developing obesity because they possess genetic variants that affect how the brain processes sensory information and regulates feeding and behavior. The findings from scientists at the University of Copenhagen support a growing body of evidence that obesity is a disease whose roots are in the brain.
Over the past decade, scientists have identified hundreds of different genetic variants that increase a person’s risk of developing obesity. But a lot of work remains to understand how these variants translate into obesity. Now scientists at the University of Copenhagen have identified populations of cells in the body that play a role in the development of the disease—and they are all in the brain.
“Our results provide evidence that biological processes outside the traditional organs investigated in obesity research, such as fat cells, play a key role in human obesity,” says Associate Professor Tune H Pers from the Novo Nordisk Foundation Center for Basic Metabolic Research (CBMR), at the University of Copenhagen, who published his team’s findings in the internationally-recognized journal eLife.
WOODS HOLE, Mass. — The dialogue between neurons is of critical importance for all nervous system activities, from breathing to sensing, thinking to running. Yet neuronal communication is so fast, and at such a small scale, that it is exceedingly difficult to explain precisely how it occurs. A preliminary observation in the Neurobiology course at the Marine Biological Laboratory (MBL), enabled by a custom imaging system, has led to a clear understanding of how neurons communicate with each other by modulating the “tone” of their signal, which previously had eluded the field. The report, led by Grant F. Kusick and Shigeki Watanabe of Johns Hopkins University School of Medicine, is published this week in Nature Neuroscience.
In 2016 Watanabe, then on the Neurobiology course faculty, introduced students to the debate over how many synaptic vesicles can fuse in response to one action potential (see this 2-minute video for a quick brush-up on neurotransmission). To probe this controversy, they used a “zap-and-freeze” imaging technology conceived by co-authors M. Wayne Davis, Watanabe and Erik Jorgensen, and built by Leica for testing in the Neurobiology course. They zapped a neuron with electricity to induce an action potential, then quickly froze the neuron and took an image. They saw multiple vesicles fusing at once at many synapses, the first novel finding of this Nature Neuroscience report.
Summary: Area 32, a region of the anterior cingulate, balances activity from cognitive and emotional areas of the primate brain.
Source: SfN
Navigating through life requires balancing emotion and reason, a feat accomplished by the brain region “area 32” of the anterior cingulate cortex. The area maintains emotional equilibrium by relaying information between cognitive and emotional brain regions, according to new research in monkeys published in Journal of Neuroscience.
Researchers identified five unapproved drugs in dangerous combinations and doses in over-the-counter cognitive enhancement drugs. Side effects of the unapproved drugs include increases and decreases in blood pressure, agitation, and sedation.approved drugs in dangerous combinations and doses in over-the-counter cognitive enhancement drugs. Side effects of the unapproved drugs include increases and decreases in blood pressure, agitation, and sedation.approved drugs in dangerous combinations and doses in over-the-counter cognitive enhancement drugs. Side effects of the unapproved drugs include increases and decreases in blood pressure, agitation, and sedation.
