<div class="FTQUOTE"><begin quote><i>Originally posted by: <b>catboogie</b></i>
next: is it not true that the only reason that Tobi was put to market as a month-on, month-off drug was because it was originally tested along with another inhaled antibiotic for the off-tobi-month that never made it to market? (i honestly do not know this for a fact.) i guess i'm saying that some doctors don't think that schedule is a good idea b/c it will allow for resistance with that stoppage period. and i'm wondering why, if it might be less than optimal to curb resistance, that is now the pattern that the aztreonam study is following?
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it's the exact opposite. TOBI is one month on, one month off to reduce propensity to induce resistance.
the more bacteria are exposed to an antibiotic, the more likely resistance will develop.
so if you continually expose PA to TOBI, the bacteria that will survive despite TOBI exposure will be those who have a mutation that allow them to survive TOBI exposure. What's left? A bunch of PA that's resistant to TOBI. Obviously this process occures over multiple antibiotic exposures, but no matter what the drug or what the bacteria, resistance develops. always has. always will.
explain your logic to me of how being off an antibiotic will induce resistance?