RIO – O cérebro pode ser treinado para curar as doenças que o acometem. Cientistas brasileiros acabam de apresentar uma técnica de treinamento cerebral capaz de modificar as conexões neuronais em tempo recorde. O trabalho, publicado na Neuroimage, abre o caminho para novos tratamentos para o acidente vascular cerebral (AVC), a doença de Parkinson e até a depressão.
O cérebro se adapta a todo momento – um fenômeno conhecido como neuroplasticidade. Essas mudanças na forma como funciona e conecta suas diferentes áreas são as bases do aprendizado e da memória.
With the UK going into a total self-imposed quarantine, several large American cities in lockdown, and distressing scenes in Spain and Italy, life right now feels chaotic and insecure. It’s a crisis. The economy has ground to a halt.
These are the worst of times.
And yet there is hope. This is temporary. It will end. Already, there are reasons to be optimistic.
So if you’re feeling a bit hopeless, consider:
About four years ago, pathologist Matthew Anderson was examining slices of postmortem brain tissue from an individual with autism under a microscope when he noticed something extremely odd: T cells swarming around a narrow space between blood vessels and neural tissue. The cells were somehow getting through the blood-brain barrier, a wall of cells that separates circulating blood from extracellular fluid, neurons, and other cell types in the central nervous system, explains Anderson, who works at Beth Israel Deaconess Medical Center in Boston. “I just have seen so many brains that I know that this is not normal.”
He soon identified more T-cell swarms, called lymphocytic cuffs, in a few other postmortem brains of people who had been diagnosed with autism. Not long after that, he started to detect another oddity in the brain tissue—tiny bubbles, or blebs. “I’d never seen them in any other brain tissue that I’ve looked at for many, many different diseases,” he says. Anderson began to wonder whether the neurological features he was observing were specific to autism.