Toluene Diisocyanate

Neurogenic Inflammation: Literature on Toluene Diisocyanate

William Meggs's recent article, "Neuro-genic Inflammation and Sensitivity to Environmental chemicals" (EHP 101:234-238), provides a useful introduction to a rapidly growing area of knowledge in physiology and posits a number of interesting hypotheses regarding the health effects of airborne chemicals. Some specific technical points, however, merit comment. Meggs describes the common chemical se...

Reference exposure levels for toluene diisocyanate

The Office of Environmental Health Hazard Assessment (OEHHA) is required to develop guidelines for conducting health risk assessments under the Air Toxics Hot Spots Program (Health and Safety Code Section 44360 (b) (2)). OEHHA developed a Technical Support Document (TSD) in response to this statutory requirement that describes acute, 8 hour and chronic RELs and was adopted in December 2008. The...

Two cases of paraoccupational asthma due to toluene diisocyanate (TDI).

Two cases of paraoccupational asthma caused by toluene diisocyanate (TDI) are reported. The first patient was a metal worker in a machine shop situated near a factory producing polyurethane foam. Symptoms at work were not explainable by any specific exposure to irritants or allergens in the work site. As the patient recalled previous occasional work in the adjacent polyurethane factory with acc...

Eosinophil infiltration in airways of mice exposed to toluene diisocyanate.

Toluene diisocyanate (TDI) is a chemically reactive low-molecular-weight compound widely used in industries as a polymerizing agent in the production of polyurethanes. TDI has been reported as one of the most important causes of occupational asthma. Clinical investigations have shown that asthma is an inflammatory disorder of the airways and is referred to as chronic eosiniopilic bronchitis . E...

Experimental model of asthma by toluene diisocyanate (TDI).