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Isocyanate Dermal Exposures in Autobody Shops

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ClinicalTrials.gov Identifier: NCT00005552
Recruitment Status : Completed
First Posted : May 26, 2000
Last Update Posted : May 13, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To characterize the skin route of exposure to the allergen hexamethylene diisocyanate (HDI) in the auto body industry.

Condition or disease
Asthma Lung Diseases

Detailed Description:


Isocyanates account for the highest number of reported cases of occupational asthma in the United States and developed countries. Prevention, however is limited by inadequate knowledge of isocyanate routes of exposure, exposure patterns, mechanisms of sensitization and other causal factors. The Survey of Painters and Repairers of Auto Bodies by Yale (SPRAY), a five-year cross-sectional epidemiologic survey of painters and repairers of autobodies at Yale was therefore initiated to address these questions. At the outset of Spray, it was not known how frequent skin contact among the painters might be. Moreover, there is new and exciting data from animal studies demonstrating that dermal rather than respiratory contact may be crucial to immune sensitization leading to asthma. Little is known, so far, about dermal exposure in autobody shops and its modifiers, especially the effectiveness of personal protective equipment (PPE) in preventing workers from skin contamination by isocyanates.


The study was ancillary to the SPRAY study and was integrated into it. The overall design was a cross-sectional investigation of 20 shops with 120 workers. This would allow a better understanding of the complex basis for asthma risk in these workers, and better recommendations to autobody shops and workers on protective measures for isocyanate dermal exposures.

Specific aims included: 1) Qualitatively and quantitatively assessing surface and skin contamination of HDI; 2) Identifying modifiers that affected surface and skin contamination, and specifically evaluating the effectiveness of personal protective equipment in protecting the skin from isocyanate contamination; 3) Exploring the relationships of dermal exposure with airborne exposure, biomarkers of systemic absorption and skin sensitization, and asthma-developing risk.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.

Study Type : Observational
Study Start Date : January 1999
Study Completion Date : December 2001

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 100 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
No eligibility criteria

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00005552

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Mark Cullen Yale University

ClinicalTrials.gov Identifier: NCT00005552     History of Changes
Other Study ID Numbers: 5096
R01HL062932 ( U.S. NIH Grant/Contract )
First Posted: May 26, 2000    Key Record Dates
Last Update Posted: May 13, 2016
Last Verified: August 2004

Additional relevant MeSH terms:
Lung Diseases
Respiratory Tract Diseases