London, Aug 29.- An international team of scientists has identified a new type of brain cells in humans, during an investigation to inventory the cells of our brain, the journal Nature Neuroscience published today.
The researchers named it Rosehip when they found that at certain points along its projections, just where they transmit signals to other cells, it had a series of unusually large bulbous structures.
According to the experts, they are small and compact, with a dense and thick shape. Interestingly, they are not present in the brains of animals like mice.
In search of a classification and typing of the new neurons, the specialists analyzed their genetic expression. It was then that they discovered that the set of genes expressed in them did not coincide with any known cell of the mouse, whose brain is often used as a model of that of humans.
So far, the exact function of rosehip neurons is totally unknown.
The only thing that the authors of the finding have been able to decipher is that they seem to form only between 10 and 15 percent of the inhibitory neurons of the first layer of the cerebral cortex, with great probability that they are even scarcer in other parts of the brain.
However, the location of their points of contact with other neurons suggests that they are in a privileged position to stop the entry of unwanted signals that excite or excessively activate the complex neural circuits inside the brain.
The researchers intend to find out how these new neurons are organized and integrated into these larger circuits.
In addition, they will investigate if their dysfunction or elimination contributes to the development of neuropsychiatric diseases. (Prensa Latina)