After acute exposure to diesel exhaust particulates, what happens to the nanoparticles that enter your body?

Question

There's been a few studies on the effects of the nanoparticles from Diesel exhaust on animals and humans, but nothing conclusive. One study, on human tests subjects, showed it cause temporary oxidative stress in the brain. In animals, in higher doses, they have caused symptoms systematic of alzheimer's syndrome, as well as induced cardiac diseases and heart attacks. So, we do know that the nanoparticles do something, and when you inhale them, they go right up to your brain.....but, are they permanent? Do they imbed themselves there forever, or eventually, in someway dissipate? Like, when you're behind a truck that's spewing out a lot of diesel exhaust in traffic, are you being PERMANENTLY brain damaged and developing a greater likelihood of altzeimers later in life, as well as heart problems, and lung cancer?... or is an acute exposure of that variety negligible, with your body's defenses plenty able and equipped to protect your organs and eject out the pollutants with no damage taken?

Answer 1

Dude, you're getting a little obsessed about diesel exhaust.  How many posts is this now?  The answer as you already said is "nothing conclusive".  Can you post your source about nanoparticles going up your nose and into your brain?  I'd love to read that one.

Answer 2

Your body can take care of moderate pollution from diesel exhaust fumes, but prolonged expose will cause severe lung irritation and could lead to emphysema.