I neuroni della dopamina usano riserve energetiche nascoste per sopravvivere allo stress Questa scoperta può cambiare la comprensione delle malattie del cervello
- Dec 24, 2025
- 2 min read
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Scientists have uncovered a surprising strategy that certain brain cells use to keep going when fuel gets scarce, and it could shift how researchers think about disorders that starve neurons of energy. The study shows that some neurons — the ones that release dopamine — put aside tiny fuel reserves that kick in when things get tough, helping these cells stay active even in stress. This isn’t just trivia about cell chemistry; it’s a peek into how the brain keeps itself running under pressure.
These particular dopamine neurons don’t simply rely on a steady supply of glucose from the bloodstream. Instead, they stash glucose in the form of glycogen, a sort of microscopic battery hidden right inside the cell terminals. When usual energy sources falter, that stash acts like a reserve tank, keeping the neurons fueled a bit longer. It’s a bit like having emergency power in a smart building.
The way these neurons decide to store glycogen is itself clever: the cells use their own signaling chemical — dopamine — as a cue to build up reserves. When dopamine activity is high, more glycogen gets stored; when it drops, the reserve tank stays shallow…
