Thanks for the link. I read the paper and it seems that they just measure the impedance (or resistance) of the cell membrane with an artificial increase of NaCl in the extracellular environment (ie plasma in the text). The final NaCl concentration looks like to be doubled than the normal range.
This might be an intersting finding, but I can't figure out why the impdecance of membrane need to be measured with increased NaCl in the plama. And whether it is only related with Na+ or Cl- change.
The salty plasma removes water from inside the cells by osmosis. The authors say that this technique is a common model for studying cellular response to stress.
The thing is if they just want to create a hyperosmotic solution they can add something won't be transported across the membrane, the way they did will change a lot of things on the membrane and inside the cell rather than stress introduced by hyperosmotic stress
