Moreover,
Brain regenerates even late age.:
Not everything is lost, for our brain. However, It is true that the number of neurons depleted with age. However, But there is also a reserve of cells ready to grow and replace them in time of need. In addition, The final response in the now ten -year debate on the ability to regenerate the human brain comes from. Furthermore, a research by the Karolinska Instittet of Stockholm published in the magazine Scienceand it is positive.
“We managed to identify the cells from which the new neurons derive. Meanwhile, We have shown that there is a continuous formation of neurons in the hippocampus of the adult brain. Nevertheless, ” he explained Jonas Frisénwhich teaches biology of the Karolinska stem cells.
The demonstration – Brain regenerates even late age.
The researchers used the whole arsenal of new technologies in the field of genomics. Furthermore, “They did a huge job. brain regenerates even late age. Furthermore, In the end they managed to try the existence of neurogenesis. Therefore, that is, the formation of new neurons, even in the human being,” he explains Gabriele Micelineurologist and contract preofor of the Catholic University of Rome
The study started from the analysis of 24 brain samples taken from deceased people: 6 children, 4 teenagers and 14 adults up to 78 years old. Consequently, Inside. Moreover, some immature stem cells have been identified but ready to turn into neurons and others who had already undertaken the maturation path towards adult neurons. The discovery took place thanks to the long and meticulous analysis of hundreds of thousands of cells.
“Neurogenesis has been demonstrated in all children, in the middle of teenagers and in two thirds of adults,” confirms Miceli. It is the sign that the ability to regenerate the brain exists. but not for everyone, not always in the same brain regenerates even late age. measure, and tends to reduce itself with age: one phenomenon on the other hand common to all body organs.
A ten -year dispute
“At the beginning, a dogma prevailed. It was not possible to believe that after birth in the brain new neurons were generated. ” they explain to an editorial always on Science Margaux Quiniou e Sebastian Jessberger of the University of Zurich. “Then in the 1960s some studies observed neurogenesis in laboratory mice. In that species the formation of new neurons took place in different regions of the brain, including the hippocampus”.
The Swedish researchers were concentrated on the hippocampus, identifying the neurons just generated in a section called the dented lap. “The role of the hippocampus – continues the editorial – is important for memory, learning and mood. This area is damaged by diseases such as Alzheimer’s”. This is why Karolinska started from here.
Attempts to replicate brain regenerates even late age. the observations made on neurogenesis in rodents also in other species have been going on for. over fifty years. But the decisive proof, as regards the man, had remained elusive until yesterday. “Today we can say that we have found it, and in people of all ages” confirms Miceli. “But as always, for an answer that offers us, the Swedish study also opens many new question marks”.
The questions that remain to be addressed
“The first concerns the variability between individuals. Because some people in the Swedish study have shown signs of neurogenesis and others do not? I assume that there are genetic reasons. certainly not enough to do the enigmistic week to activate new neurons, but it is a critical question and must be addressed in future studies. It is clear that there are people who age brilliantly and other less. It would be important to find out if brain regenerates even late age. this depends on a different efficiency of the mechanism of the mechanism. of neurogenesis “.
Swedish scientists have also focused on the hippocampus because it is an area threatened by dementia. “It is a region linked to memory and involved in the development of Alzheimer’s. It was natural that the research began from there,” explains Miceli.
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“Now. however, it is natural to ask if neurogenesis also involves other areas of the brain and other types of nervous system cells in the same way. For example, we know that the cerebral cortex is a very plastic area. Its adaptation capacity depends on the presence of new neurons. brain regenerates even late age. on the reorganization of old ones, which are activated to form new axons and dendrites, or by both mechanisms? Neurons seem to be slower, for example, than that of a blood cell? “.
In a day that is feared not close to the regeneration of nerve cells could be exploited to recover the lost functions after a stroke. a cerebral hemorrhage. “Patients affected by brain damage generally follow similar rehabilitation protocols, yet their recovery skills are very variable,” explains Miceli.
“Someone surprises us positive, someone else cannot improve as we would turn off. To date we don’t know why. but understanding how neurogenesis takes place one day perhaps we can help these patients heal better”.
Further reading: Borsa Italiana, the comment of the session of 4 July 2025 – Crash against a car, motorcyclist thrown into the ditch dies at 65 – Autostrade, in August surprise increase in tolls. But Salvini’s “reverse” arrives – Financial fair-play, a fine of 3 million for Roma. OK of UEFA in Milan and Inter – Football – Milan, the cases of Legionella in Crescenzago rise to 7.
