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Household endotoxin levels and the risk of non-Hodgkin lymphoma
Journal article   Open access   Peer reviewed

Household endotoxin levels and the risk of non-Hodgkin lymphoma

Jun Wang, Wendy Cozen, Peter S. Thorne, Kiros Berhane, James R. Cerhan, Patricia Hartge, Mary H. Ward, Anneclaire J. De Roos, Richard K. Severson, Lindsay M. Morton, …
Cancer causes & control, v 24(2), pp 357-364
01 Feb 2013
PMID: 23277417
url
https://europepmc.org/articles/pmc3800025View
Accepted (AM) Open

Abstract

Life Sciences & Biomedicine Oncology Public, Environmental & Occupational Health Science & Technology
Endotoxin, a component of the outer membrane of gram-negative bacteria, elicits a strong innate and inflammatory immune response associated with the secretion of proinflammatory cytokines, including tumor necrosis factor-alpha (TNF-alpha). Because TNF-alpha polymorphisms that increase TNF-alpha production are associated with an increased risk of non-Hodgkin lymphoma (NHL), we hypothesized that increased levels of household endotoxin would be associated with an increased NHL risk. We evaluated this association in the National Cancer Institute/Surveillance, Epidemiology and End Results (NCI/SEER) NHL multicenter population-based case-control study. Used vacuum cleaner bags were collected from participants during a home interview. Dust samples from the bags of 594 cases and 442 controls were analyzed for endotoxin [endotoxin unit (EU)/mg of dust] using the kinetic chromogenic Limulus amebocyte lysate assay. Multivariable logistic regression was used to estimate the effect of endotoxin on NHL risk adjusted for age, sex, race, education, study center, and farm exposure. Endotoxin was not associated with NHL overall [odds ratio (OR) for highest quartile of endotoxin levels = 0.81, 95 % confidence interval (CI) = 0.55, 1.20; p for trend = 0.35] or with diffuse large B-cell lymphoma (OR = 0.63, 95 % CI = 0.34, 1.16; p = 0.31) or follicular lymphoma (OR = 1.07, 95 % CI = 0.61, 1.89; p = 0.73) subtypes. Both working and living on a farm were associated with higher household endotoxin levels compared to never working (p = 0.009) or living (p = 0.01) on a farm. Excluding farmers from the analysis did not change the results. We found no evidence of a role for household endotoxin in NHL etiology.

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Collaboration types
Domestic collaboration
Web of Science research areas
Oncology
Public, Environmental & Occupational Health
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