that article does not say it crosses the BBB, just opens it.
here's an link to info stating it might cross the BBB after repeated uses but is used to relieve pressure on the brain because it doesn't cross the BBB.
http://www.anaesthesiamcq.com/FluidBook/fl8_5.php

I might be wrong, i'm not a doctor, chemist or have any medical training.

it is interesting though how the israeli researchers imply it crosses the BBB but nowhere does it say they tested it in humans.