ArticleInternational archives of occupational and environmental health2008
Influence of polymorphic metabolic enzymes on biotransformation and effects of diphenylmethane diisocyanate.
Article in International archives of occupational and environmental health, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 10 citations in OpenAlex.
- Biomarkers in Occupational Asthma.Current allergy and asthma reports · 2016Review
- Hexamethylene diisocyanate (HDI) vapor reactivity with glutathione and subsequent transfer to human albumin.Toxicology in vitro : an international journal published in association with BIBRA · 2013Article
- Role of GSTM1 in resistance to lung inflammation.Free radical biology & medicine · 2012Review
- Pathogenesis and disease mechanisms of occupational asthma.Immunology and allergy clinics of North America · 2011Review
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo identify effect modification produced by genetic traits found in metabolic enzymes, to investigate how these affect the levels of different biomarkers of sprayed and thermo-degraded polyurethane (PUR) based on 4,4'-diphenylmethane diisocyanate (MDI) and to determine how associated respiratory disorders are affected.
methodsTwo partly overlapping groups of 141 and 158 factory employees exposed to sprayed or heated MDI-PUR glue were examined in years 0 and 2, respectively, for occurrence of polymorphisms in five genes (N-acetyltransferase NAT2 and the glutathione S-transferases GSTM1, GSTM3, GSTP1 [codon 105 and 114] and GSTT1) on the basis of the polymerase chain reaction, exposure biomarkers in plasma and urine (P- and U-MDX), by means of gas chromatography-mass spectrometry, specific serum IgG antibodies against MDI (S-IgG-MDI) by means of ELISA, total S-IgE, symptoms in the eyes, nose and lower airways as assessed by questionnaire and interview, and lung function as measured by spirometry.
resultsBoth the GSTP1 (105) isoleucine/isoleucine and GSTP1 (114) alanine/alanine genotypes showed higher levels of U-MDX than the other genotypes and the GSTP1 (114) genotype modified the P-MDX/U-MDX relationship. GSTP1 (105) isoleucine/isoleucine was found to be associated with lower levels of S-IgG-MDI and fewer eye symptoms, but with an increased risk of symptoms in the airways, as well as with atopy. Presence of the GSTT1 gene resulted in somewhat lower lung function levels than did the null genotype. A slow NAT2 acetylating capacity was associated with lower P- and U-MDX and S-IgG-MDI levels, and better lung function, but a higher risk of eye and airway symptoms. Analysing the effects of combinations of the different genes provided no further information.
conclusionsAlthough our study has clear limitations, it reveals various effect modifications produced by the GST and NAT2 genotypes. Gene-environment interactions are highly complex. Further research is needed to obtain a more comprehensive understanding of them.
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