Proof that adult announcements make new neurons with controversy in science
Adult brains grow in new neurons, and scientists at the end are set where they are from
Neural prenorsor cells (green) are difficult to identify people with people.
Carol N. IBE and Eugene O. Major / National Institutes of Health / Science Source
For at least six decades, Neurosients argue a large, foundation question: Adult braines make new neurons? This process is “Neurogenenesis“Other adult animals showed, but its evidence of people is the case – so far. Using a new way of 78 – and, for the first time, other brain cells recognized them.
Results, published on Thursday on Science,, are the first signs that cells have a capacity to be neurons, called cells in the first neural, among adult humanities. “We now have strong evidence that the whole process is in humans, from the leading cells of non-madders,” as Gerd Kempermann, a neurobiologist at the University of Technology in Dresden.
Across the gestation, our brain has churched in the new neuron Until 100 billion comes we started life, and that’s counting counting like our age. As early as 1962, the rats’ studies were shown that neurogenesis continued the whole life of animals. Some found that young neurons existed adult adult brain. But it is JOBS If the “young” neurons are new – or if people just start with life with a collection of them, after they gradually developed during maturity.
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One thing is clear from these studies: If adults neurogenesis occur everywhere, it’s in the hippocampus, a deep brain structure known as the processing of memory and storing it. But even in the hippocampus of man, neuroscientists have not found primarily cells that divide and divide new neurons.
Sweden’s Sweden’s Karolinska Institute previously found previous human brain neurons. Martha Petelini, a neuroscientiun of the Institute, and his companions, acting to pin it how the neurons happened. Patelelini and his team exploited a new combination of ways to check non-enthusiastic neurons and neural prenorsor cells in the hippocampi of six children, whose brain was given in the science of their death. From over 100,000 cells, researchers have gained rna-bits of genetic information used to make actions in each cell. These markers come together to form a molecular molecular type available to predict the life stage of a cell. “This is not a sign that explains active neurogenesis; this is the combination of many markers,” as the patelini, author of the co-lead author of the new study.
After recognizing these markers in young brains, the team is looking for the same signatures of 19 postmortem brain from 13 to 78 years old. All brains have less neurons except one. Researchers also found neural cells before each of the child’s brains and 12 of the 19 teenagers and adult brains.
Two adults possess for many neural prenorsor cells and are not too neurons than others. The younger brothers live with epilepsy, which can connect to the apparent abundance of neurogenesis. In rats, higher levels of neurogenesis can cause seizures, even if the people’s epilepsy connection is not clear.
The team suspected that neurogenesis occurred in other parts of the adult brain, too. In rats, new neurons are often made by the Olfactory bulb (a structure processing odor) as well – but the same is not yet shown by people. Patelelini plans to investigate if adults neurogenesis can occur there or elsewhere in the brain.
Some research of rats suggested that damage the neurogenenesis involved in alzheimer and depression. Know more about how nineties are born
In the question of adult neurogeneses decided, scientists begin to learn more about what neurogenesis of the brain and how it affects different diseases. “It’s a crucial role because it finally got to put it all,” says Kempermann. “And can we now concentrate on the question: How do these human cells contribute to the function of the brain?”
