The answer was no, because the increase in polyamines within the cell was due to increased synthesis within the cell, not due to uptake from outwith the cell. It took me a few minutes of finding my jaw from under the lectern to answer, however. I should have followed it up with some research, I can just see the Nature Medicine headline, "Prolific Anal Banging Does Not Increase Your Chance Of Colon Cancer Despite The Minging Carcinogens Expelled In Spud Paste".