Is This What They Mean by a “Pyrrhic Victory”?
This just in from the frontlines of basic science:
Lung cancer cells grown in vitro are protected from apoptosis (the process by which damaged cells commit suicide) induced by chemotherapy when nicotine is added to the cells.
Adding a small amount of nicotine to the cells increased the activity of two genes capable of stopping the natural death process of apoptosis. Without nicotine exposure the genes were suppressed and the cells successfully completed apoptosis (also known as being blown to kingdom come).
The study authors therefore warn that lung cancer patients who continue to smoke may have a lower probability of responding to chemotherapy. In fact, they state “Our findings are in agreement with clinical studies that patients who continue to smoke have worse survival profiles [my italics] than those who quit before treatment.”
Worse survival profiles? Compared to what? Take a look at this graph which shows the survival curves of advanced non-small cell lung cancer patients who receive chemotherapy compared with those who receive only supportive care. How can a “survival profile” get much worse than this? In fact, the last time I saw a slope this steep I think I screamed like a banshee and wet my britches.
I always tell my lung cancer patients that they will tolerate their treatment better if they stop smoking, but as far as increasing their chances for long-term survival by stopping all nicotine consumption - don’t make me laugh, let alone pull out my little friend and start blasting.
This research is extremely raw and may not apply to living, breathing human beings, but until I see results from actual clinical trials I am not going to rant and rave at my patients who choose to continue to smoke. After all, as Petrarch said:
“Vos vestros servate, meos mihi linquite mores,” which translates loosely as “Shadduppa yo face.”
