Airborne fine particulate matter induced pulmonary inflammation as well as oxidative stress in neonate rats.

"Study demonstrated acute exposure to fine PM induced airway inflammation as well as increased oxidative stress in addition to its direct toxic effect on airway epithelium cells."

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Ultrafine particles in air pollution may heighten allergic inflammation in asthma

"Ultrafine particles in air pollution may heighten allergic inflammation in asthma UCLA-led study has implications for traffic-related asthma flares......A new academic study led by UCLA scientists has found that even brief exposure to ultrafine pollution particles near a Los Angeles freeway is potent enough to boost the allergic inflammation that exacerbates asthma."

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Ultra-fine Particles, Particularly Harmful To Health, Can Now Be Traced

Ultra-fine Particles, Particularly Harmful To Health, Can Now Be Traced

ScienceDaily (2009-10-05) -- Limit values for fine dust emissions are based on total particle weight. It is the ultra-fine particles, however, that are particularly harmful to health. A new technique separates them by size and identifies their composition -- directly where they arise. ... > read full article