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  1. Article ; Online: Nontraditional Occupational Exposures to Crude Oil Combustion Disasters and Respiratory Disease Risk: A Narrative Review of Literature.

    Chen, Dazhe / Lawrence, Kaitlyn G / Sandler, Dale P

    Current allergy and asthma reports

    2023  Volume 23, Issue 6, Page(s) 299–311

    Abstract: Purpose of review: Burning of petroleum products has been consistently associated with adverse respiratory health effects. Combustion of crude oil, specifically, produces toxic byproducts, but there have been relatively few studies of health effects. ... ...

    Abstract Purpose of review: Burning of petroleum products has been consistently associated with adverse respiratory health effects. Combustion of crude oil, specifically, produces toxic byproducts, but there have been relatively few studies of health effects. Burning of crude oil is increasingly employed as a means of mitigating environmental disasters despite the potential health risks to workers involved in clean-up efforts. Here, we review epidemiological studies of respiratory effects following unique crude oil burning events to (1) characterize respiratory health effects from this nontraditional occupational exposure and (2) identify approaches used to characterize exposures that could be applied to future disaster-related studies.
    Recent findings: We searched PubMed and EMBASE for references from inception to January 30, 2023. We also manually screened references cited in eligible articles. We identified 14 eligible publications. Our review suggests that exposure to crude oil combustion has adverse respiratory effects, including reduced lung function and increased occurrence of respiratory symptoms and disease. However, the evidence is inconsistent, and quality of data varied across studies. While some studies used quantitative, modeled exposure estimates, most used self-reported proxies of exposure. Although disasters involving crude oil combustion are relatively rare, limited evidence suggests that some worker populations may be at risk for respiratory effects from burning exposures in disaster settings. Future studies that use improved exposure assessment methods (e.g., personal monitors, remote sensing data) may help further quantify the respiratory risk from crude oil burning exposures.
    MeSH term(s) Humans ; Petroleum/adverse effects ; Petroleum Pollution/adverse effects ; Disasters ; Occupational Exposure/adverse effects ; Respiratory Tract Diseases/epidemiology ; Respiratory Tract Diseases/etiology ; Respiration Disorders
    Chemical Substances Petroleum
    Language English
    Publishing date 2023-05-11
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, N.I.H., Intramural
    ZDB-ID 2057370-4
    ISSN 1534-6315 ; 1529-7322
    ISSN (online) 1534-6315
    ISSN 1529-7322
    DOI 10.1007/s11882-023-01078-x
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  2. Article ; Online: Pesticide use and inflammatory bowel disease in licensed pesticide applicators and spouses in the Agricultural Health Study.

    Chen, Dazhe / Parks, Christine G / Hofmann, Jonathan N / Beane Freeman, Laura E / Sandler, Dale P

    Environmental research

    2024  Volume 249, Page(s) 118464

    Abstract: Background: Pesticide exposure has been linked to some autoimmune diseases and colorectal cancer, possibly via alteration of gut microbiota or other mechanisms. While pesticides have been linked to gut dysbiosis and inflammation in animal models, few ... ...

    Abstract Background: Pesticide exposure has been linked to some autoimmune diseases and colorectal cancer, possibly via alteration of gut microbiota or other mechanisms. While pesticides have been linked to gut dysbiosis and inflammation in animal models, few epidemiologic studies have examined pesticides in relation to inflammatory bowel disease (IBD).
    Objectives: We evaluated use of pesticides and incident IBD in 68,480 eligible pesticide applicators and spouses enrolled in the Agricultural Health Study.
    Methods: Self-reported IBD cases were identified from follow-up questionnaires between enrollment (1993-1997) and 2022. We evaluated IBD incidence in relation to self-reported ever use of 50 pesticides among applicators and spouses. We also explored associations with intensity-weighted lifetime days (IWLD) of pesticide use among male applicators. Covariate-adjusted hazard ratios (HR) and 95% confidence intervals (CI) were calculated using Cox regression.
    Results: We identified 454 IBD cases, including 227 among male applicators. In analyses with applicators and spouses combined, associations were positive (HR > 1.2) for ever vs. never use of five organochlorine insecticides, three organophosphate insecticides, one fungicide, and five herbicides. HRs were highest for dieldrin (HR = 1.59, 95%CI: 1.03, 2.44), toxaphene (HR = 1.61, 95%CI: 1.17, 2.21), parathion (HR = 1.42, 95%CI: 1.03, 1.95), and terbufos (HR = 1.53, 95%CI: 1.19, 1.96). We had limited power in many IWLD of pesticide use analyses and did not find clear evidence of exposure-response trends; however, we observed elevated HRs in all tertiles of IWLD use of terbufos compared to never use (T1 vs. never use HR = 1.52, 95%CI: 1.03, 2.24; T2 vs. never use HR = 1.53, 95%CI: 1.04, 2.26; T3 vs. never use HR = 1.51, 95%CI: 1.03, 2.23).
    Conclusions: Exposure to specific pesticides was associated with elevated hazards of IBD. These findings may have public health importance given the widespread use of pesticides and the limited number of known modifiable environmental risk factors for IBD.
    MeSH term(s) Humans ; Male ; Pesticides/toxicity ; Middle Aged ; Female ; Occupational Exposure/adverse effects ; Inflammatory Bowel Diseases/epidemiology ; Inflammatory Bowel Diseases/chemically induced ; Spouses/statistics & numerical data ; Adult ; Aged ; Farmers/statistics & numerical data ; Incidence ; Iowa/epidemiology ; Agriculture
    Chemical Substances Pesticides
    Language English
    Publishing date 2024-02-12
    Publishing country Netherlands
    Document type Journal Article ; Research Support, N.I.H., Intramural ; Research Support, N.I.H., Extramural
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2024.118464
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  3. Article ; Online: Ingested nitrate and nitrite and end-stage renal disease in licensed pesticide applicators and spouses in the Agricultural Health Study.

    Chen, Dazhe / Parks, Christine G / Beane Freeman, Laura E / Hofmann, Jonathan N / Sinha, Rashmi / Madrigal, Jessica M / Ward, Mary H / Sandler, Dale P

    Journal of exposure science & environmental epidemiology

    2024  

    Abstract: Background: Nitrate and nitrite ingestion has been linked to kidney cancer, possibly via the endogenous formation of carcinogenic N-nitroso compounds. These exposures might also contribute to end-stage renal disease (ESRD).: Objectives: We ... ...

    Abstract Background: Nitrate and nitrite ingestion has been linked to kidney cancer, possibly via the endogenous formation of carcinogenic N-nitroso compounds. These exposures might also contribute to end-stage renal disease (ESRD).
    Objectives: We investigated associations of drinking water nitrate and dietary nitrate and nitrite intakes (total and by food type) with incident ESRD in the Agricultural Health Study. We also explored modifying effects of vitamin C and heme iron intake, which may affect endogenous nitrosation.
    Methods: We performed complete case analyses among private pesticide applicators and their spouses. We obtained water nitrate estimates for participants whose primary drinking water source at enrollment (1993-1997) was public water supplies (PWS) or private wells (N = 59,632). Average nitrate concentrations were computed from historical data for PWS users and predicted from random forest models for private well users. Analysis of dietary nitrate and nitrite was restricted to the 30,177 participants who completed the NCI Dietary History Questionnaire during follow-up (1999-2003). Incident ESRD through 2018 was ascertained through linkage with the U.S. Renal Data System. We estimated adjusted hazard ratios (HRs) and 95%CI for associations of tertiles (T) of exposure with ESRD overall and explored effects in strata of vitamin C and heme iron intake.
    Results: We identified 469 incident ESRD cases (206 for dietary analysis). Water nitrate and total dietary nitrate/nitrite were not associated with ESRD, but increased ESRD was associated with nitrate and nitrite from processed meats. We found apparent associations between nitrite and ESRD only among participants with vitamin C <median (T3 vs. T1 HR: 2.26, 95%CI: 1.05, 4.86) and with heme iron ≥median (T3 vs. T1 HR: 1.73, 95%CI: 0.89, 3.39).<br />Significance: ESRD incidence was associated with dietary nitrate/nitrite from processed meat among all study participants and with total dietary nitrite among participants with lower vitamin C or higher heme iron intake.
    Impact statement: There are few well-established environmental risk factors for end-stage renal disease (ESRD), a worldwide public health challenge. Ingestion of nitrate and nitrite, which may lead to endogenous formation of carcinogenic N-nitroso compounds, has been linked to some cancers and chronic diseases. We investigated these exposures in relation to ESRD in an agricultural cohort. ESRD incidence was associated with dietary nitrate/nitrite from processed meat and with total dietary nitrite among subgroups with lower vitamin C or higher heme iron intake. This study provides preliminary evidence that points to dietary nitrite and possibly dietary nitrate intake as a potential contributor to ESRD.
    Language English
    Publishing date 2024-01-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2218551-3
    ISSN 1559-064X ; 1559-0631
    ISSN (online) 1559-064X
    ISSN 1559-0631
    DOI 10.1038/s41370-023-00625-y
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  4. Article ; Online: Distinguishing Linkage Position and Anomeric Configuration of Glucose-Glucose Disaccharides by Water Adduction to Lithiated Molecules.

    Campbell, Matthew T / Chen, Dazhe / Glish, Gary L

    Analytical chemistry

    2018  Volume 90, Issue 3, Page(s) 2048–2054

    Abstract: A method was developed to distinguish both the linkage position and the anomericity of all reducing and two nonreducing glucopyransosyl-glucose disaccharides using only electrospray ionization-mass spectrometry/mass spectrometry (ESI-MS/MS). ... ...

    Abstract A method was developed to distinguish both the linkage position and the anomericity of all reducing and two nonreducing glucopyransosyl-glucose disaccharides using only electrospray ionization-mass spectrometry/mass spectrometry (ESI-MS/MS). Carbohydrates are well-known to form complexes with metal cations during electrospray ionization. Addition of a lithium salt to a solution containing a disaccharide, M, results in [M + Li]
    Language English
    Publishing date 2018-01-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.7b04162
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  5. Article ; Online: Identifying the D-Pentoses Using Water Adduction to Lithium Cationized Molecule.

    Campbell, Matthew T / Chen, Dazhe / Glish, Gary L

    Journal of the American Society for Mass Spectrometry

    2017  Volume 28, Issue 7, Page(s) 1420–1424

    Abstract: A method has been developed that is capable of distinguishing an exhaustive list of underivatized D-pentoses with only a mass spectrometer. Electrospray ionization (ESI) of a solution containing a pentose and a lithium salt yields [Pentose + Li] ...

    Abstract A method has been developed that is capable of distinguishing an exhaustive list of underivatized D-pentoses with only a mass spectrometer. Electrospray ionization (ESI) of a solution containing a pentose and a lithium salt yields [Pentose + Li]
    Language English
    Publishing date 2017-04-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1073671-2
    ISSN 1879-1123 ; 1044-0305
    ISSN (online) 1879-1123
    ISSN 1044-0305
    DOI 10.1007/s13361-017-1656-5
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  6. Article ; Online: Distinguishing Biologically Relevant Hexoses by Water Adduction to the Lithium-Cationized Molecule.

    Campbell, Matthew T / Chen, Dazhe / Wallbillich, Nicholas J / Glish, Gary L

    Analytical chemistry

    2017  Volume 89, Issue 19, Page(s) 10504–10510

    Abstract: A method to distinguish the four most common biologically relevant underivatized hexoses, d-glucose, d-galactose, d-mannose, and d-fructose, using only mass spectrometry with no prior separation/derivatization step has been developed. Electrospray of a ... ...

    Abstract A method to distinguish the four most common biologically relevant underivatized hexoses, d-glucose, d-galactose, d-mannose, and d-fructose, using only mass spectrometry with no prior separation/derivatization step has been developed. Electrospray of a solution containing hexose and a lithium salt generates [Hexose+Li]
    MeSH term(s) Fructose/chemistry ; Galactose/chemistry ; Glucose/chemistry ; Hexoses/chemistry ; Ions/chemistry ; Lithium/chemistry ; Mannose/chemistry ; Spectrometry, Mass, Electrospray Ionization ; Water/chemistry
    Chemical Substances Hexoses ; Ions ; Water (059QF0KO0R) ; Fructose (30237-26-4) ; Lithium (9FN79X2M3F) ; Glucose (IY9XDZ35W2) ; Mannose (PHA4727WTP) ; Galactose (X2RN3Q8DNE)
    Language English
    Publishing date 2017-09-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.7b02647
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  7. Article ; Online: Exposure to volatile hydrocarbons and neurologic function among oil spill workers up to 6 years after the Deepwater Horizon disaster.

    Chen, Dazhe / Werder, Emily J / Stewart, Patricia A / Stenzel, Mark R / Gerr, Fredric E / Lawrence, Kaitlyn G / Groth, Caroline P / Huynh, Tran B / Ramachandran, Gurumurthy / Banerjee, Sudipto / Jackson Ii, W Braxton / Christenbury, Kate / Kwok, Richard K / Sandler, Dale P / Engel, Lawrence S

    Environmental research

    2023  Volume 231, Issue Pt 1, Page(s) 116069

    Abstract: Background: During the 2010 Deepwater Horizon (DWH) disaster, oil spill response and cleanup (OSRC) workers were exposed to toxic volatile components of crude oil. Few studies have examined exposure to individual volatile hydrocarbon chemicals below ... ...

    Abstract Background: During the 2010 Deepwater Horizon (DWH) disaster, oil spill response and cleanup (OSRC) workers were exposed to toxic volatile components of crude oil. Few studies have examined exposure to individual volatile hydrocarbon chemicals below occupational exposure limits in relation to neurologic function among OSRC workers.
    Objectives: To investigate the association of several spill-related chemicals (benzene, toluene, ethylbenzene, xylene, n-hexane, i.e., BTEX-H) and total petroleum hydrocarbons (THC) with neurologic function among DWH spill workers enrolled in the Gulf Long-term Follow-up Study.
    Methods: Cumulative exposure to THC and BTEX-H across the oil spill cleanup period were estimated using a job-exposure matrix that linked air measurement data to detailed self-reported DWH OSRC work histories. We ascertained quantitative neurologic function data via a comprehensive test battery at a clinical examination that occurred 4-6 years after the DWH disaster. We used multivariable linear regression and modified Poisson regression to evaluate relationships of exposures (quartiles (Q)) with 4 neurologic function measures. We examined modification of the associations by age at enrollment (<50 vs. ≥50 years).
    Results: We did not find evidence of adverse neurologic effects from crude oil exposures among the overall study population. However, among workers ≥50 years of age, several individual chemical exposures were associated with poorer vibrotactile acuity of the great toe, with statistically significant effects observed in Q3 or Q4 of exposures (range of log mean difference in Q4 across exposures: 0.13-0.26 μm). We also observed suggestive adverse associations among those ≥ age 50 years for tests of postural stability and single-leg stance, although most effect estimates did not reach thresholds of statistical significance (p < 0.05).
    Conclusions: Higher exposures to volatile components of crude oil were associated with modest deficits in neurologic function among OSRC workers who were age 50 years or older at study enrollment.
    MeSH term(s) Humans ; Middle Aged ; Petroleum Pollution/adverse effects ; Follow-Up Studies ; Disasters ; Hydrocarbons/toxicity ; Petroleum/toxicity
    Chemical Substances Hydrocarbons ; Petroleum
    Language English
    Publishing date 2023-05-05
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2023.116069
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  8. Article ; Online: Volatile Hydrocarbon Exposures and Incident Coronary Heart Disease Events: Up to Ten Years of Follow-up among

    Chen, Dazhe / Sandler, Dale P / Keil, Alexander P / Heiss, Gerardo / Whitsel, Eric A / Edwards, Jessie K / Stewart, Patricia A / Stenzel, Mark R / Groth, Caroline P / Ramachandran, Gurumurthy / Banerjee, Sudipto / Huynh, Tran B / Jackson, W Braxton / Blair, Aaron / Lawrence, Kaitlyn G / Kwok, Richard K / Engel, Lawrence S

    Environmental health perspectives

    2023  Volume 131, Issue 5, Page(s) 57006

    Abstract: Background: During the 2010 : Objectives: Our aim was to investigate the association of several spill-related chemicals [benzene, toluene, ethylbenzene, xylene, : Methods: Cumulative exposures to THC and BTEX-H across the cleanup period were ... ...

    Abstract Background: During the 2010
    Objectives: Our aim was to investigate the association of several spill-related chemicals [benzene, toluene, ethylbenzene, xylene,
    Methods: Cumulative exposures to THC and BTEX-H across the cleanup period were estimated via a job-exposure matrix that linked air measurement data with self-reported
    Results: Among 22,655 workers with no previous MI diagnoses, 509 experienced an incident CHD event through December 2019. Workers in higher quintiles of each exposure agent had increased CHD risks in comparison with the referent group (Q1) of that agent, with the strongest associations observed in Q5 (range of
    Conclusions: Higher exposures to volatile components of crude oil were associated with modest increases in risk of CHD among oil spill workers, although we did not observe exposure-response trends. https://doi.org/10.1289/EHP11859.
    MeSH term(s) Humans ; Petroleum Pollution/adverse effects ; Follow-Up Studies ; Prospective Studies ; Coronary Disease/chemically induced ; Coronary Disease/epidemiology ; Myocardial Infarction ; Benzene ; Petroleum
    Chemical Substances Benzene (J64922108F) ; Petroleum
    Language English
    Publishing date 2023-05-24
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, N.I.H., Extramural ; Research Support, N.I.H., Intramural
    ZDB-ID 195189-0
    ISSN 1552-9924 ; 0091-6765 ; 1078-0475
    ISSN (online) 1552-9924
    ISSN 0091-6765 ; 1078-0475
    DOI 10.1289/EHP11859
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  9. Article: Distinguishing Biologically Relevant Hexoses by Water Adduction to the Lithium-Cationized Molecule

    Campbell, Matthew T / Chen Dazhe / Wallbillich Nicholas J / Glish Gary L

    Analytical chemistry. 2017 Oct. 03, v. 89, no. 19

    2017  

    Abstract: A method to distinguish the four most common biologically relevant underivatized hexoses, d-glucose, d-galactose, d-mannose, and d-fructose, using only mass spectrometry with no prior separation/derivatization step has been developed. Electrospray of a ... ...

    Abstract A method to distinguish the four most common biologically relevant underivatized hexoses, d-glucose, d-galactose, d-mannose, and d-fructose, using only mass spectrometry with no prior separation/derivatization step has been developed. Electrospray of a solution containing hexose and a lithium salt generates [Hexose+Li]⁺. The lithium-cationized hexoses adduct water in a quadrupole ion trap. The rate of this water adduction reaction can be used to distinguish the four hexoses. Additionally, for each hexose, multiple lithiation sites are possible, allowing for multiple structures of [Hexose+Li]⁺. Electrospray produces at least one structure that reacts with water and at least one that does not. The ratio of unreactive lithium-cationized hexose to total lithium-cationized hexose is unique for the four hexoses studied, providing a second method for distinguishing the isomers. Use of the water adduction reaction rate or the unreactive ratio provides two separate methods for confidently (p ≤ 0.02) distinguishing the most common biologically relevant hexoses using only femtomoles of hexose. Additionally, binary mixtures of glucose and fructose were studied. A calibration curve was created by measuring the reaction rate of various samples with different ratios of fructose and glucose. The calibration curve was used to accurately measure the percentage of fructose in three samples of high fructose corn syrup (<4% error).
    Keywords derivatization ; fructose ; galactose ; glucose ; hexoses ; high fructose corn syrup ; isomers ; lithium ; mannose ; mass spectrometry
    Language English
    Dates of publication 2017-1003
    Size p. 10504-10510.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021%2Facs.analchem.7b02647
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  10. Article ; Online: Fine Particulate Matter and Lung Function among Burning-Exposed

    Chen, Dazhe / Lawrence, Kaitlyn G / Pratt, Gregory C / Stenzel, Mark R / Stewart, Patricia A / Groth, Caroline P / Banerjee, Sudipto / Christenbury, Kate / Curry, Matthew D / Jackson, W Braxton / Kwok, Richard K / Blair, Aaron / Engel, Lawrence S / Sandler, Dale P

    Environmental health perspectives

    2022  Volume 130, Issue 2, Page(s) 27001

    Abstract: Background: During the 2010 : Objective: We investigated the association between estimated : Methods: We included workers who participated in response and cleanup activities on the water during the : Results: We observed significant exposure- ... ...

    Abstract Background: During the 2010
    Objective: We investigated the association between estimated
    Methods: We included workers who participated in response and cleanup activities on the water during the
    Results: We observed significant exposure-response trends associating higher cumulative daily maximum
    Conclusions: Among oil spill workers, exposure to
    MeSH term(s) Air Pollutants/analysis ; Environmental Exposure/analysis ; Forced Expiratory Volume ; Humans ; Lung ; Particulate Matter/analysis ; Petroleum Pollution/adverse effects ; Petroleum Pollution/analysis ; Vital Capacity
    Chemical Substances Air Pollutants ; Particulate Matter
    Language English
    Publishing date 2022-02-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, N.I.H., Intramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 195189-0
    ISSN 1552-9924 ; 0091-6765 ; 1078-0475
    ISSN (online) 1552-9924
    ISSN 0091-6765 ; 1078-0475
    DOI 10.1289/EHP8930
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