Curse you, I've just lost an hour on wikipedia!
This sounds awfully close to electroosmotic flow a phenomenon that has been known about for 200 years. Maybe someone better informed in this field could clarify the difference.
Ah, you're right I should have read the actual paper. The fact remains though, that similar treatments are being performed on humans in countries with less stringent standards which makes mouse studies somewhat less exciting but, of course important.