Researchers have uncovered the molecular mechanism behind how a commonly used inhaled anesthetic, sevoflurane, induces unconsciousness during surgery. The study found that the drug binds to a tiny pocket on sodium ion channels—proteins essential for communication between brain cells—and locks them in an inactive state. This reduces electrical signaling between neurons, helping suppress brain activity and produce unconsciousness. The discovery offers the first atomic-level view of this process, solving a mystery that has puzzled scientists for over 175 years. The findings could pave the way for safer, more targeted anesthetics with fewer side effects and improve our understanding of why patients respond differently to anesthesia.
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