PMID- 24683011 OWN - NLM STAT- MEDLINE DCOM- 20140623 LR - 20151119 IS - 1470-7926 (Electronic) IS - 1351-0711 (Linking) VI - 71 IP - 6 DP - 2014 Jun TI - Exhaled nitric oxide in spray painters exposed to isocyanates: effect modification by atopy and smoking. PG - 415-22 LID - 10.1136/oemed-2013-101672 [doi] AB - BACKGROUND: Isocyanate asthma is one of the most frequently identified forms of occupational asthma in industrialised countries. The underlying mechanisms have not been clarified. There is only limited information about the relationship between exhaled nitric oxide (eNO) and occupational exposure to isocyanates and asthma. OBJECTIVES: To investigate the association between isocyanate exposure and eNO levels in isocyanate-exposed workers and to elucidate whether eNO acts as a marker of airway inflammation controlling for smoking and atopy in an industry-wide survey. METHODS: Information on estimated personal isocyanate exposure, measured eNO levels, health effects and sensitisation were analysed in 229 workers from a cross-sectional study. Univariate and multiple regression analyses were used to explore the exposure-response relationships between isocyanate exposure and eNO, stratified by smoking and atopy. RESULTS: A marginally significant exposure-response relationship was found between isocyanate exposure and eNO in atopic, non-smokers (p=0.054). eNO was significantly associated with atopy and smoking, bronchial hyper-responsiveness (BHR), work-related conjunctivitis and rhinitis after adjustment for age, gender, atopy and smoking (p<0.05). A borderline significant association was found between eNO and asthma-like symptoms after adjustment for age, gender, atopy and current smoking (p=0.055). In a small group of isocyanate-exposed workers with positive serum-specific immunoglobulin E (IgE) antibodies to hexamethylene diisocyanate (HDI), elevated eNO levels were clearly exposure related. eNO was associated with the positive specific IgG antibodies to HDI in non-atopic, non-smokers (p=0.03). CONCLUSIONS: Increased eNO levels may indicate increased airway inflammation in atopic, non-smokers exposed to isocyanates especially at higher levels of isocyanate exposure. FAU - Jonaid, Badri Sadat AU - Jonaid BS AD - Division of Environmental Epidemiology, Institute for Risk Assessment Sciences (IRAS), Utrecht University, The Netherlands. FAU - Pronk, Anjoeka AU - Pronk A FAU - Doekes, Gert AU - Doekes G FAU - Heederik, Dick AU - Heederik D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140328 PL - England TA - Occup Environ Med JT - Occupational and environmental medicine JID - 9422759 RN - 0 (Biomarkers) RN - 0 (Immunoglobulins) RN - 0 (Isocyanates) RN - 0I70A3I1UF (1,6-hexamethylene diisocyanate) RN - 31C4KY9ESH (Nitric Oxide) SB - IM MH - Adult MH - Asthma/*etiology/immunology/metabolism MH - Biomarkers/metabolism MH - Conjunctivitis/metabolism MH - Cross-Sectional Studies MH - Exhalation MH - Female MH - Humans MH - Hypersensitivity, Immediate/metabolism MH - Immunoglobulins/blood MH - Inflammation/etiology/metabolism MH - Isocyanates/*adverse effects/immunology MH - Male MH - Middle Aged MH - Nitric Oxide/*metabolism MH - Occupational Diseases/*etiology/immunology/metabolism MH - Occupational Exposure/*adverse effects MH - *Paint MH - Rhinitis/metabolism MH - Smoking/*metabolism EDAT- 2014/04/01 06:00 MHDA- 2014/06/24 06:00 CRDT- 2014/04/01 06:00 PHST- 2014/04/01 06:00 [entrez] PHST- 2014/04/01 06:00 [pubmed] PHST- 2014/06/24 06:00 [medline] AID - oemed-2013-101672 [pii] AID - 10.1136/oemed-2013-101672 [doi] PST - ppublish SO - Occup Environ Med. 2014 Jun;71(6):415-22. doi: 10.1136/oemed-2013-101672. Epub 2014 Mar 28.