196 results on '"Jonathan N. Hofmann"'
Search Results
2. Urinary biomonitoring of glyphosate exposure among male farmers and nonfarmers in the Biomarkers of Exposure and Effect in Agriculture (BEEA) study
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Vicky C. Chang, Maria Ospina, Shuai Xie, Gabriella Andreotti, Christine G. Parks, Danping Liu, Jessica M. Madrigal, Mary H. Ward, Nathaniel Rothman, Debra T. Silverman, Dale P. Sandler, Melissa C. Friesen, Laura E. Beane Freeman, Antonia M. Calafat, and Jonathan N. Hofmann
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Glyphosate ,Farmers ,Occupational exposure ,Human biomonitoring ,Urine ,Environmental sciences ,GE1-350 - Abstract
Glyphosate is the most widely applied herbicide worldwide. Glyphosate biomonitoring data are limited for agricultural settings. We measured urinary glyphosate concentrations and assessed exposure determinants in the Biomarkers of Exposure and Effect in Agriculture (BEEA) study. We selected four groups of BEEA participants based on self-reported pesticide exposure: recently exposed farmers with occupational glyphosate use in the last 7 days (n = 98), farmers with high lifetime glyphosate use (>80th percentile) but no use in the last 7 days (n = 70), farming controls with minimal lifetime use (n = 100), and nonfarming controls with no occupational pesticide exposures and no recent home/garden glyphosate use (n = 100). Glyphosate was quantified in first morning void urine using ion chromatography isotope-dilution tandem mass spectrometry. We estimated associations between urinary glyphosate concentrations and potential determinants using multivariable linear regression. Glyphosate was detected (≥0.2 µg/L) in urine of most farmers with recent (91 %) and high lifetime (93 %) use, as well as farming (88 %) and nonfarming (81 %) controls; geometric mean concentrations were 0.89, 0.59, 0.46, and 0.39 µg/L (0.79, 0.51, 0.42, and 0.37 µg/g creatinine), respectively. Compared with both control groups, urinary glyphosate concentrations were significantly elevated among recently exposed farmers (P
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- 2024
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3. High pesticide exposures events, pesticide poisoning, and shingles: A medicare-linked study of pesticide applicators in the agricultural health study
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Christine G. Parks, Darya Leyzarovich, Shelly-Ann Love, Stuart Long, Jonathan N. Hofmann, Laura E. Beane Freeman, and Dale P. Sandler
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Cohort study ,Acute pesticide exposure ,Epidemiology ,Infections ,Herpes Zoster ,Humans ,Environmental sciences ,GE1-350 - Abstract
Objectives: Self-reported shingles was associated with history of high pesticide exposure events (HPEE) in licensed pesticide applicators aged >60 years in the Agricultural Health Study (AHS). In the current study, using AHS-linked Medicare claims data, we examined incident shingles in relation to pesticide-related illness and pesticide poisoning, as well as HPEE. Methods: We studied 22,753 licensed private pesticide applicators (97% white males, enrolled in the AHS 1993–97), aged ≥66 years with >12 consecutive months of Medicare fee-for-service hospital and outpatient coverage between 1999 and 2016. Incident shingles was identified based on having ≥1 shingles claim(s) after 12 months without claims. At AHS enrollment, participants were asked if they ever sought medical care or were hospitalized for pesticide-related illness, and a supplemental questionnaire (completed by 51%) asked about HPEE and poisoning. Hazard ratios (HR) and 95% confidence intervals (CI) were estimated using Cox proportional hazards regression, adjusted for age, sex, race, state, and education. Results: Over 192,053 person-years (PY), 2396 applicators were diagnosed with shingles (10.5%; age-standardized rate, 13.6 cases per 1,000PY), with higher rates among those reporting hospitalization for pesticide-related illness, pesticide poisoning, and HPEE (23.2, 22.5, and 16.6 per 1,000PY, respectively). In adjusted models, shingles was associated with hospitalization for pesticide-related illness (HR 1.69; 1.18, 2.39), poisoning (1.49; 1.08, 1.46), and HPEE (1.23; 95% CI = 1.03, 1.46), especially HPEE plus medical care/poisoning (1.78; 1.30, 2.43). Conclusion: These novel findings suggest that acute, high-level, and clinically impactful pesticide exposures may increase risk of shingles in subsequent years to decades following exposure.
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- 2023
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4. Serum concentrations of per- and polyfluoroalkyl substances and risk of renal cell carcinoma in the Multiethnic Cohort Study
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Jongeun Rhee, Vicky C. Chang, Iona Cheng, Antonia M. Calafat, Julianne Cook Botelho, Joseph J. Shearer, Joshua N. Sampson, Veronica Wendy Setiawan, Lynne R. Wilkens, Debra T. Silverman, Mark P. Purdue, and Jonathan N. Hofmann
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Per- and polyfluoroalkyl substances (PFAS) ,Perfluorooctanoate (PFOA) ,Perfluorononanoate (PFNA) ,Renal cell carcinoma ,Kidney cancer ,Multiethnic cohort ,Environmental sciences ,GE1-350 - Abstract
Per- and polyfluoroalkyl substances (PFAS) are environmentally persistent organic pollutants detectable in the serum of most U.S. adults. We previously reported a positive association between serum perfluorooctanoate (PFOA) concentrations and risk of renal cell carcinoma (RCC) within the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial, comprising predominantly White individuals enrolled in 1993–2001. To extend our investigations to a larger and more racially and ethnically diverse population, we conducted a nested case-control study of serum PFAS concentrations and RCC within the Multiethnic Cohort Study. We measured pre-diagnostic serum concentrations of nine PFAS among 428 RCC cases and 428 individually matched controls. We estimated odds ratios (ORs) and 95 % confidence intervals (CIs) for risk of RCC in relation to each PFAS using conditional logistic regression, adjusting for RCC risk factors and other PFAS. PFOA was not associated with RCC risk overall [doubling in serum concentration, ORcontinuous = 0.89 (95 %CI = 0.67, 1.18)]. However, we observed suggestive positive associations among White participants [2.12 (0.87, 5.18)] and among participants who had blood drawn before 2002 [1.49 (0.77, 2.87)]. Furthermore, higher perfluorononanoate (PFNA) concentration was associated with increased risk of RCC overall [fourth vs. first quartile, OR = 1.84 (0.97, 3.50), Ptrend = 0.04; ORcontinuous = 1.29 (0.97, 1.71)], with the strongest association observed among African American participants [ORcontinuous = 3.69 (1.33, 10.25)], followed by Native Hawaiian [2.24 (0.70, 7.19)] and White [1.98 (0.92, 4.25)] participants. Most other PFAS were not associated with RCC. While PFOA was not associated with RCC risk overall in this racially and ethnically diverse population, the positive associations observed among White participants and those with sera collected before 2002 are consistent with previous PLCO findings. Our study also provided new evidence of a positive association between PFNA and RCC risk that was strongest in African American participants. These findings highlight the need for additional epidemiologic research investigating PFAS exposures and RCC in large racially and ethnically diverse populations.
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- 2023
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5. Endogenous sex steroid hormones and risk of liver cancer among US men: Results from the Liver Cancer Pooling Project
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Zeni Wu, Jessica L. Petrick, Andrea A. Florio, Chantal Guillemette, Laura E. Beane Freeman, Julie E. Buring, Gary Bradwin, Patrick Caron, Yu Chen, A. Heather Eliassen, Lawrence S. Engel, Neal D. Freedman, J. Michael Gaziano, Edward L. Giovannuci, Jonathan N. Hofmann, Wen-Yi Huang, Victoria A. Kirsh, Cari M. Kitahara, Jill Koshiol, I-Min Lee, Linda M. Liao, Christina C. Newton, Julie R. Palmer, Mark P. Purdue, Thomas E. Rohan, Lynn Rosenberg, Howard D. Sesso, Rashmi Sinha, Meir J. Stampfer, Caroline Y. Um, Stephen K. Van Den Eeden, Kala Visvanathan, Jean Wactawski-Wende, Anne Zeleniuch-Jacquotte, Xuehong Zhang, Barry I. Graubard, Peter T. Campbell, and Katherine A. McGlynn
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Androgen ,Oestrogen ,Sex steroid hormone ,Liver cancer ,Male ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Background & Aims: Incidence rates of liver cancer in most populations are two to three times higher among men than women. The higher rates among men have led to the suggestion that androgens are related to increased risk whereas oestrogens are related to decreased risk. This hypothesis was investigated in the present study via a nested case-control analysis of pre-diagnostic sex steroid hormone levels among men in five US cohorts. Methods: Concentrations of sex steroid hormones and sex hormone-binding globulin were quantitated using gas chromatography–mass spectrometry and a competitive electrochemiluminescence immunoassay, respectively. Multivariable conditional logistic regression was used to calculate odds ratios (ORs) and 95% CIs for associations between hormones and liver cancer among 275 men who subsequently developed liver cancer and 768 comparison men. Results: Higher concentrations of total testosterone (OR per one-unit increase in log2 = 1.77, 95% CI = 1.38–2.29), dihydrotestosterone (OR = 1.76, 95% CI = 1.21–2.57), oestrone (OR = 1.74, 95% CI = 1.08-2.79), total oestradiol (OR = 1.58, 95% CI=1.22–20.05), and sex hormone-binding globulin (OR = 1.63, 95% CI = 1.27–2.11) were associated with increased risk. Higher concentrations of dehydroepiandrosterone (DHEA), however, were associated with a 53% decreased risk (OR = 0.47, 95% CI = 0.33–0.68). Conclusions: Higher concentrations of both androgens (testosterone, dihydrotestosterone) and their aromatised oestrogenic metabolites (oestrone, oestradiol) were observed among men who subsequently developed liver cancer compared with men who did not. As DHEA is an adrenal precursor of both androgens and oestrogens, these results may suggest that a lower capacity to convert DHEA to androgens, and their subsequent conversion to oestrogens, confers a lower risk of liver cancer, whereas a greater capacity to convert DHEA confers a greater risk. Impact and implications: This study does not fully support the current hormone hypothesis as both androgen and oestrogen levels were associated with increased risk of liver cancer among men. The study also found that higher DHEA levels were associated with lower risk, thus suggesting the hypothesis that greater capacity to convert DHEA could be associated with increased liver cancer risk among men.
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- 2023
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6. Body mass index and risk of progression from monoclonal gammopathy of undetermined significance to multiple myeloma: Results from the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial
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Vicky C. Chang, Ali A. Khan, Wen-Yi Huang, Hormuzd A. Katki, Mark P. Purdue, Ola Landgren, and Jonathan N. Hofmann
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Published
- 2022
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7. Polymorphisms within Autophagy-Related Genes as Susceptibility Biomarkers for Multiple Myeloma: A Meta-Analysis of Three Large Cohorts and Functional Characterization
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Esther Clavero, José Manuel Sanchez-Maldonado, Angelica Macauda, Rob Ter Horst, Belém Sampaio-Marques, Artur Jurczyszyn, Alyssa Clay-Gilmour, Angelika Stein, Michelle A. T. Hildebrandt, Niels Weinhold, Gabriele Buda, Ramón García-Sanz, Waldemar Tomczak, Ulla Vogel, Andrés Jerez, Daria Zawirska, Marzena Wątek, Jonathan N. Hofmann, Stefano Landi, John J. Spinelli, Aleksandra Butrym, Abhishek Kumar, Joaquín Martínez-López, Sara Galimberti, María Eugenia Sarasquete, Edyta Subocz, Elzbieta Iskierka-Jażdżewska, Graham G. Giles, Malwina Rybicka-Ramos, Marcin Kruszewski, Niels Abildgaard, Francisco García Verdejo, Pedro Sánchez Rovira, Miguel Inacio da Silva Filho, Katalin Kadar, Małgorzata Razny, Wendy Cozen, Matteo Pelosini, Manuel Jurado, Parveen Bhatti, Marek Dudzinski, Agnieszka Druzd-Sitek, Enrico Orciuolo, Yang Li, Aaron D. Norman, Jan Maciej Zaucha, Rui Manuel Reis, Miroslaw Markiewicz, Juan José Rodríguez Sevilla, Vibeke Andersen, Krzysztof Jamroziak, Kari Hemminki, Sonja I. Berndt, Vicent Rajkumar, Grzegorz Mazur, Shaji K. Kumar, Paula Ludovico, Arnon Nagler, Stephen J. Chanock, Charles Dumontet, Mitchell J. Machiela, Judit Varkonyi, Nicola J. Camp, Elad Ziv, Annette Juul Vangsted, Elizabeth E. Brown, Daniele Campa, Celine M. Vachon, Mihai G. Netea, Federico Canzian, Asta Försti, and Juan Sainz
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multiple myeloma ,autophagy ,genetic variants ,genetic susceptibility ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Multiple myeloma (MM) arises following malignant proliferation of plasma cells in the bone marrow, that secrete high amounts of specific monoclonal immunoglobulins or light chains, resulting in the massive production of unfolded or misfolded proteins. Autophagy can have a dual role in tumorigenesis, by eliminating these abnormal proteins to avoid cancer development, but also ensuring MM cell survival and promoting resistance to treatments. To date no studies have determined the impact of genetic variation in autophagy-related genes on MM risk. We performed meta-analysis of germline genetic data on 234 autophagy-related genes from three independent study populations including 13,387 subjects of European ancestry (6863 MM patients and 6524 controls) and examined correlations of statistically significant single nucleotide polymorphisms (SNPs; p < 1 × 10−9) with immune responses in whole blood, peripheral blood mononuclear cells (PBMCs), and monocyte-derived macrophages (MDM) from a large population of healthy donors from the Human Functional Genomic Project (HFGP). We identified SNPs in six loci, CD46, IKBKE, PARK2, ULK4, ATG5, and CDKN2A associated with MM risk (p = 4.47 × 10−4−5.79 × 10−14). Mechanistically, we found that the ULK4rs6599175 SNP correlated with circulating concentrations of vitamin D3 (p = 4.0 × 10−4), whereas the IKBKErs17433804 SNP correlated with the number of transitional CD24+CD38+ B cells (p = 4.8 × 10−4) and circulating serum concentrations of Monocyte Chemoattractant Protein (MCP)-2 (p = 3.6 × 10−4). We also found that the CD46rs1142469 SNP correlated with numbers of CD19+ B cells, CD19+CD3− B cells, CD5+IgD− cells, IgM− cells, IgD−IgM− cells, and CD4−CD8− PBMCs (p = 4.9 × 10−4−8.6 × 10−4) and circulating concentrations of interleukin (IL)-20 (p = 0.00082). Finally, we observed that the CDKN2Ars2811710 SNP correlated with levels of CD4+EMCD45RO+CD27− cells (p = 9.3 × 10−4). These results suggest that genetic variants within these six loci influence MM risk through the modulation of specific subsets of immune cells, as well as vitamin D3−, MCP-2−, and IL20-dependent pathways.
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- 2023
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8. Completeness of cohort-linked U.S. Medicare data: An example from the Agricultural Health Study (1999–2016)
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Christine G. Parks, Srishti Shrestha, Stuart Long, Thomas Flottemesch, Sarah Woodruff, Honglei Chen, Gabriella Andreotti, Jonathan N. Hofmann, Laura E. Beane Freeman, and Dale P. Sandler
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Cohort study ,Medicare ,Linked data ,Farmers ,Rural ,Medicine - Abstract
Medicare Fee for Service (FFS) claims data, including inpatient (Part A) and outpatient (Part B) services, provide a valuable resource for research on older adults (≥65 year) in linked U.S. cohorts. Here we describe our experience linking the Agricultural Health Study cohort, including 47,501 licensed pesticide applicators and spouses from North Carolina (NC) and Iowa (IA) to Medicare claims data from 1999 to 2016. Given increased Part C (i.e., managed care/Medicare Advantage) enrollment during this period, and a resulting lack of available Part C claims data prior to 2015, we also explored potential for informative missingness. We compared those with partial or limited/no FFS to those with complete FFS coverage (i.e., ≥11 months per year parts AB, but not C, throughout Medicare enrollment) in relation to baseline farm size, general pesticide use, and mortality, in logistic regression models adjusted for age, sex, race, education, and smoking, and stratified by state. While 46,689 participants (98%) were linked to Medicare IDs, only 33,487 (70%) had complete FFS, 9353 (20%) had partial FFS (≥1 year FFS but not complete), and 3849 (8%) had limited/no FFS (Part A or Part C-only). Incomplete FFS was more common in NC, mostly due to Part C, and was associated with farm characteristics, pesticide use, and mortality. These findings indicate that, in addition to reduced sample size in analyses limited to complete FFS, missingness may not be random. The potential impact of incomplete FFS data and changes in coverage type need to be considered when planning linked analyses and interpreting results.
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- 2022
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9. Pesticide exposure and risk of aggressive prostate cancer among private pesticide applicators
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Larissa A. Pardo, Laura E. Beane Freeman, Catherine C. Lerro, Gabriella Andreotti, Jonathan N. Hofmann, Christine G. Parks, Dale P. Sandler, Jay H. Lubin, Aaron Blair, and Stella Koutros
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Pesticide ,Aggressive prostate cancer (PCa) ,Organodithioate insecticides ,Pesticide applicators ,Industrial medicine. Industrial hygiene ,RC963-969 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Prostate cancer (PCa) is one of the most commonly diagnosed cancers among men in developed countries; however, little is known about modifiable risk factors. Some studies have implicated organochlorine and organophosphate insecticides as risk factors (particularly the organodithioate class) and risk of clinically significant PCa subtypes. However, few studies have evaluated other pesticides. We used data from the Agricultural Health Study, a large prospective cohort of pesticide applicators in North Carolina and Iowa, to extend our previous work and evaluate 39 additional pesticides and aggressive PCa. Methods We used Cox proportional hazards models, with age as the time scale, to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between ever use of individual pesticides and 883 cases of aggressive PCa (distant stage, poorly differentiated grade, Gleason score ≥ 7, or fatal prostate cancer) diagnosed between 1993 and 2015. All models adjusted for birth year, state, family history of PCa, race, and smoking status. We conducted exposure-response analyses for pesticides with reported lifetime years of use. Results There was an increased aggressive PCa risk among ever users of the organodithioate insecticide dimethoate (n = 54 exposed cases, HR = 1.37, 95% CI = 1.04, 1.80) compared to never users. We observed an inverse association between aggressive PCa and the herbicide triclopyr (n = 35 exposed cases, HR = 0.68, 95% CI = 0.48, 0.95), with the strongest inverse association for those reporting durations of use above the median (≥ 4 years; n = 13 exposed cases, HR=0.44, 95% CI=0.26, 0.77). Conclusion Few additional pesticides were associated with prostate cancer risk after evaluation of extended data from this large cohort of private pesticide applicators.
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- 2020
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10. Cancer incidence in agricultural workers: Findings from an international consortium of agricultural cohort studies (AGRICOH)
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Kayo Togawa, Maria E. Leon, Pierre Lebailly, Laura E Beane Freeman, Karl-Christian Nordby, Isabelle Baldi, Ewan MacFarlane, Aesun Shin, Sue Park, Robert T Greenlee, Torben Sigsgaard, Ioannis Basinas, Jonathan N. Hofmann, Kristina Kjaerheim, Jeroen Douwes, Rachel Denholm, Gilles Ferro, Malcolm R. Sim, Hans Kromhout, and Joachim Schüz
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Agriculture ,Farmers ,Occupational health ,Cohort ,Consortium ,Cancer incidence ,Environmental sciences ,GE1-350 - Abstract
Background: Agricultural work can expose workers to potentially hazardous agents including known and suspected carcinogens. This study aimed to evaluate cancer incidence in male and female agricultural workers in an international consortium, AGRICOH, relative to their respective general populations. Methods: The analysis included eight cohorts that were linked to their respective cancer registries: France (AGRICAN: n = 128,101), the US (AHS: n = 51,165, MESA: n = 2,177), Norway (CNAP: n = 43,834), Australia (2 cohorts combined, Australian Pesticide Exposed Workers: n = 12,215 and Victorian Grain Farmers: n = 919), Republic of Korea (KMCC: n = 8,432), and Denmark (SUS: n = 1,899). For various cancer sites and all cancers combined, standardized incidence ratios (SIR) and 95% confidence intervals (CIs) were calculated for each cohort using national or regional rates as reference rates and were combined by random-effects meta-analysis. Results: During nearly 2,800,000 person-years, a total of 23,188 cancers were observed. Elevated risks were observed for melanoma of the skin (number of cohorts = 3, meta-SIR = 1.18, CI: 1.01–1.38) and multiple myeloma (n = 4, meta-SIR = 1.27, CI: 1.04–1.54) in women and prostate cancer (n = 6, meta-SIR = 1.06, CI: 1.01–1.12), compared to the general population. In contrast, a deficit was observed for the incidence of several cancers, including cancers of the bladder, breast (female), colorectum, esophagus, larynx, lung, and pancreas and all cancers combined (n = 7, meta-SIR for all cancers combined = 0.83, 95% CI: 0.77–0.90). The direction of risk was largely consistent across cohorts although we observed large between-cohort variations in SIR for cancers of the liver and lung in men and women, and stomach, colorectum, and skin in men. Conclusion: The results suggest that agricultural workers have a lower risk of various cancers and an elevated risk of prostate cancer, multiple myeloma (female), and melanoma of skin (female) compared to the general population. Those differences and the between-cohort variations may be due to underlying differences in risk factors and warrant further investigation of agricultural exposures.
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- 2021
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11. Pesticide exposure and incident thyroid cancer among male pesticide applicators in agricultural health study
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Catherine C. Lerro, Laura E. Beane Freeman, Curt T. DellaValle, Gabriella Andreotti, Jonathan N. Hofmann, Stella Koutros, Christine G. Parks, Srishti Shrestha, Michael C.R. Alavanja, Aaron Blair, Jay H. Lubin, Dale P. Sandler, and Mary H. Ward
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Pesticides ,Thyroid cancer ,Agriculture ,Epidemiology ,Environmental sciences ,GE1-350 - Abstract
Background: Many pesticides are known to have thyroid-disrupting properties. However, few studies have evaluated the association between specific pesticide ingredients and risk of thyroid cancer. We investigated self-reported pesticide use and incident thyroid cancer in the Agricultural Health Study (AHS), a large cohort of occupationally-exposed male pesticide applicators. Methods: The AHS is a prospective cohort of licensed pesticide applicators in Iowa and North Carolina. At enrollment (1993–1997) and follow-up (1999–2005), participants reported use of 50 pesticides. We characterized exposure as ever use (44 pesticides with ≥5 exposed cases) and by cumulative intensity-weighted lifetime days (22 pesticides with ≥10 exposed cases), a metric that accounts for factors that influence exposure. We estimated hazard ratios (HR) and 95% confidence intervals (CI) using Cox regression for incident thyroid (n = 85 cases) cancer among male participants using follow-up through 2014/2015. Results: Use of the fungicide metalaxyl (HR = 2.03, CI:1.16–3.52) and the organochlorine insecticide lindane (HR = 1.74, CI:1.06–2.84) was associated with increased risk of thyroid cancer. The herbicide chlorimuron-ethyl was inversely associated with risk when we restricted to papillary thyroid cancer, the most common subtype (HR = 0.52, CI:0.28–0.96). High use of the insecticide carbaryl (>median intensity-weighted days) was inversely associated with thyroid cancer (HR = 0.20, CI:0.08–0.53, ptrend = 0.001). Conclusions: In this large cohort study, we observed increased risk of thyroid cancer associated with use of metalaxyl and lindane, and an inverse association with carbaryl. More work is needed to understand the potential role of these chemicals in thyroid carcinogenesis.
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- 2021
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12. Two high-risk susceptibility loci at 6p25.3 and 14q32.13 for Waldenström macroglobulinemia
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Mary L. McMaster, Sonja I. Berndt, Jianqing Zhang, Susan L. Slager, Shengchao Alfred Li, Claire M. Vajdic, Karin E. Smedby, Huihuang Yan, Brenda M. Birmann, Elizabeth E. Brown, Alex Smith, Geffen Kleinstern, Mervin M. Fansler, Christine Mayr, Bin Zhu, Charles C. Chung, Ju-Hyun Park, Laurie Burdette, Belynda D. Hicks, Amy Hutchinson, Lauren R. Teras, Hans-Olov Adami, Paige M. Bracci, James McKay, Alain Monnereau, Brian K. Link, Roel C. H. Vermeulen, Stephen M. Ansell, Ann Maria, W. Ryan Diver, Mads Melbye, Akinyemi I. Ojesina, Peter Kraft, Paolo Boffetta, Jacqueline Clavel, Edward Giovannucci, Caroline M. Besson, Federico Canzian, Ruth C. Travis, Paolo Vineis, Elisabete Weiderpass, Rebecca Montalvan, Zhaoming Wang, Meredith Yeager, Nikolaus Becker, Yolanda Benavente, Paul Brennan, Lenka Foretova, Marc Maynadie, Alexandra Nieters, Silvia de Sanjose, Anthony Staines, Lucia Conde, Jacques Riby, Bengt Glimelius, Henrik Hjalgrim, Nisha Pradhan, Andrew L. Feldman, Anne J. Novak, Charles Lawrence, Bryan A. Bassig, Qing Lan, Tongzhang Zheng, Kari E. North, Lesley F. Tinker, Wendy Cozen, Richard K. Severson, Jonathan N. Hofmann, Yawei Zhang, Rebecca D. Jackson, Lindsay M. Morton, Mark P. Purdue, Nilanjan Chatterjee, Kenneth Offit, James R. Cerhan, Stephen J. Chanock, Nathaniel Rothman, Joseph Vijai, Lynn R. Goldin, Christine F. Skibola, and Neil E. Caporaso
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Science - Abstract
Waldenström macroglobulinemia (WM)/lymphoplasmacytic lymphoma (LPL) is a non-Hodgkin-type B cell lymphoma. Here, the authors identify two risk loci for WM/LPL in a two-stage GWAS involving a family-oversampling approach and provide evidence for a functional role of the non-coding SNP rs116446171.
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- 2018
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13. Genome-wide association study identifies multiple risk loci for renal cell carcinoma
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Ghislaine Scelo, Mark P. Purdue, Kevin M. Brown, Mattias Johansson, Zhaoming Wang, Jeanette E. Eckel-Passow, Yuanqing Ye, Jonathan N. Hofmann, Jiyeon Choi, Matthieu Foll, Valerie Gaborieau, Mitchell J. Machiela, Leandro M. Colli, Peng Li, Joshua N. Sampson, Behnoush Abedi-Ardekani, Celine Besse, Helene Blanche, Anne Boland, Laurie Burdette, Amelie Chabrier, Geoffroy Durand, Florence Le Calvez-Kelm, Egor Prokhortchouk, Nivonirina Robinot, Konstantin G. Skryabin, Magdalena B. Wozniak, Meredith Yeager, Gordana Basta-Jovanovic, Zoran Dzamic, Lenka Foretova, Ivana Holcatova, Vladimir Janout, Dana Mates, Anush Mukeriya, Stefan Rascu, David Zaridze, Vladimir Bencko, Cezary Cybulski, Eleonora Fabianova, Viorel Jinga, Jolanta Lissowska, Jan Lubinski, Marie Navratilova, Peter Rudnai, Neonila Szeszenia-Dabrowska, Simone Benhamou, Geraldine Cancel-Tassin, Olivier Cussenot, Laura Baglietto, Heiner Boeing, Kay-Tee Khaw, Elisabete Weiderpass, Borje Ljungberg, Raviprakash T. Sitaram, Fiona Bruinsma, Susan J. Jordan, Gianluca Severi, Ingrid Winship, Kristian Hveem, Lars J. Vatten, Tony Fletcher, Kvetoslava Koppova, Susanna C. Larsson, Alicja Wolk, Rosamonde E. Banks, Peter J. Selby, Douglas F. Easton, Paul Pharoah, Gabriella Andreotti, Laura E. Beane Freeman, Stella Koutros, Demetrius Albanes, Satu Männistö, Stephanie Weinstein, Peter E. Clark, Todd L. Edwards, Loren Lipworth, Susan M. Gapstur, Victoria L. Stevens, Hallie Carol, Matthew L. Freedman, Mark M. Pomerantz, Eunyoung Cho, Peter Kraft, Mark A. Preston, Kathryn M. Wilson, J. Michael Gaziano, Howard D. Sesso, Amanda Black, Neal D. Freedman, Wen-Yi Huang, John G. Anema, Richard J. Kahnoski, Brian R. Lane, Sabrina L. Noyes, David Petillo, Bin Tean Teh, Ulrike Peters, Emily White, Garnet L. Anderson, Lisa Johnson, Juhua Luo, Julie Buring, I-Min Lee, Wong-Ho Chow, Lee E. Moore, Christopher Wood, Timothy Eisen, Marc Henrion, James Larkin, Poulami Barman, Bradley C. Leibovich, Toni K. Choueiri, G. Mark Lathrop, Nathaniel Rothman, Jean-Francois Deleuze, James D. McKay, Alexander S. Parker, Xifeng Wu, Richard S. Houlston, Paul Brennan, and Stephen J. Chanock
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Science - Abstract
Risk for renal cell carcinoma (RCC) is higher when there are first-degree family members with the disease. Here, Scelo and colleagues perform a genome-wide association meta-analysis and new genome-wide scan to identify seven new loci with significant RCC association.
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- 2017
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14. Lifetime Pesticide Use and Antinuclear Antibodies in Male Farmers From the Agricultural Health Study
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Christine G. Parks, Aline de Souza Espindola Santos, Catherine C. Lerro, Curt T. DellaValle, Mary H. Ward, Michael C. Alavanja, Sonja I. Berndt, Laura E. Beane Freeman, Dale P. Sandler, and Jonathan N. Hofmann
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epidemiology–analytic (risk factors) ,autoantibodies ,pesticides ,occupational epidemiology ,cohort study (or longitudinal study) ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Farming and pesticide use have been associated with systemic autoimmune diseases, and while certain organochlorine insecticides and other pesticides are suspected to influence risk, the role of specific pesticides in the development of systemic autoimmunity is not known. We measured serum antinuclear autoantibodies (ANA) by immunofluorescence on Hep-2 cells in 668 male farmers in the study of Biomarkers of Exposure and Effect in Agriculture (BEEA; 2010–2013), an Agricultural Health Study (AHS) subcohort. We examined ANA in relation to lifetime use of 46 pesticides first reported at AHS enrollment (1993–1997) and updated at intervals through BEEA enrollment. Odds ratios (OR) and 95% confidence intervals (CI) were estimated after adjusting for age, state, education, season of blood draw, current pesticide use, and correlated pesticides. Having ANA antibodies (3 or 4+ intensity at a 1:80 dilution, 21% of study participants) was associated with a reported history of seeking medical care due to exposure to pesticides (OR 2.15; 95%CI 1.17, 3.95), use of the fumigant methyl bromide (OR 3.16; 95%CI 1.05, 9.5), and use of petroleum oil/distillates (OR 1.50; 95%CI 1.00, 2.25). Using a higher threshold (3 or 4+ at a 1:160 dilution, 9%) ANA positivity was associated with the carbamate insecticide aldicarb (OR 4.82; 95%CI 1.33, 17.5) and greater combined use of four cyclodiene organochlorine insecticides (top tertile of intensity-weighted lifetime days vs. no use; OR T3 3.20; 95%CI 1.10, 9.27). By contrast, greater use of non-cyclodiene organochlorine insecticides was inversely associated with ANA (1:80 dilution 3 or 4+, OR T3 0.24; 95%CI 0.08, 0.72). Specific autoantibodies (to extractable nuclear antigens and anti-dsDNA), measured on those with ANA detected at the 1:80 dilution 3 or 4+, were seen in 15 individuals (2%), and were associated with use of two or more cyclodiene organochlorine insecticides and several other pesticides (e.g., carbofuran, ethylene dibromide). These findings suggest that specific pesticide exposures may have long-term effects on ANA prevalence and support the hypothesis that certain organochlorine insecticides may increase the risk of developing systemic autoimmunity.
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- 2019
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15. Activity Tracking with Momentary Assessments.
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John Shade, Dana L. Wolff-Hughes, Pabitra Josse, Sarah J. Locke, Laura E. Beane Freeman, Jonathan N. Hofmann, Heather Bowles, and Melissa C. Friesen
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- 2018
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16. Impact of overweight and obesity on US renal cell carcinoma incidence trends (1995‐2018)
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Qianlai Luo, Jonathan N. Hofmann, Ruth M. Pfeiffer, Cari M. Kitahara, Minkyo Song, and Meredith S. Shiels
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Cancer Research ,Oncology - Published
- 2023
17. Glyphosate exposure and urinary oxidative stress biomarkers in the Agricultural Health Study
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Vicky C Chang, Gabriella Andreotti, Maria Ospina, Christine G Parks, Danping Liu, Joseph J Shearer, Nathaniel Rothman, Debra T Silverman, Dale P Sandler, Antonia M Calafat, Laura E Beane Freeman, and Jonathan N Hofmann
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Cancer Research ,Oncology - Abstract
Background Glyphosate is the most widely applied herbicide worldwide, and its use has been associated with increased risks of certain hematopoietic cancers in epidemiologic studies. Animal and in vitro experiments suggest that glyphosate may induce oxidative stress, a key characteristic of carcinogens; however, evidence in human populations remains scarce. We investigated associations between glyphosate exposure and urinary oxidative stress biomarkers in the Biomarkers of Exposure and Effect in Agriculture study, a molecular epidemiologic subcohort in the Agricultural Health Study. Methods This analysis included 268 male farmers selected based on self-reported recent and lifetime occupational glyphosate use and 100 age- and geography-matched male nonfarmers. Concentrations of glyphosate and oxidative stress biomarkers (8-hydroxy-2′-deoxyguanosine [8-OHdG], 8-iso-prostaglandin-F2α, and malondialdehyde [MDA]) were quantified in first-morning-void urine. We performed multivariable linear regression to evaluate associations of urinary glyphosate and self-reported glyphosate use with each oxidative stress biomarker. Results Urinary glyphosate concentrations were positively associated with levels of 8-OHdG (highest vs lowest glyphosate quartile; geometric mean ratio = 1.15, 95% confidence interval = 1.03 to 1.28; Ptrend = .02) and MDA (geometric mean ratio = 1.20, 95% confidence interval = 1.03 to 1.40; Ptrend = .06) overall. Among farmers reporting recent glyphosate use (last 7 days), use in the previous day was also associated with statistically significantly increased 8-OHdG and MDA levels. Compared with nonfarmers, we observed elevated 8-iso-prostaglandin-F2α levels among farmers with recent, high past 12-month, or high lifetime glyphosate use. Conclusions Our findings contribute to the weight of evidence supporting an association between glyphosate exposure and oxidative stress in humans and may inform evaluations of the carcinogenic potential of this herbicide.
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- 2023
18. A pleiotropic variant in <scp> DNAJB4 </scp> is associated with multiple myeloma risk
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Marco Dicanio, Matteo Giaccherini, Alyssa Clay‐Gilmour, Angelica Macauda, Juan Sainz, Mitchell J. Machiela, Malwina Rybicka‐Ramos, Aaron D. Norman, Agata Tyczyńska, Stephen J. Chanock, Torben Barington, Shaji K. Kumar, Parveen Bhatti, Wendy Cozen, Elizabeth E. Brown, Anna Suska, Eva K. Haastrup, Robert Z. Orlowski, Marek Dudziński, Ramon Garcia‐Sanz, Marcin Kruszewski, Joaquin Martinez‐Lopez, Katia Beider, Elżbieta Iskierka‐Jazdzewska, Matteo Pelosini, Sonja I. Berndt, Małgorzata Raźny, Krzysztof Jamroziak, S. Vincent Rajkumar, Artur Jurczyszyn, Annette Juul Vangsted, Pilar Garrido Collado, Ulla Vogel, Jonathan N. Hofmann, Mario Petrini, Aleksandra Butrym, Susan L. Slager, Elad Ziv, Edyta Subocz, Graham G. Giles, Niels Frost Andersen, Grzegorz Mazur, Marzena Watek, Fabienne Lesueur, Michelle A. T. Hildebrandt, Daria Zawirska, Lene Hyldahl Ebbesen, Herlander Marques, Federica Gemignani, Charles Dumontet, Judit Várkonyi, Gabriele Buda, Arnon Nagler, Agnieszka Druzd‐Sitek, Xifeng Wu, Katalin Kadar, Nicola J. Camp, Norbert Grzasko, Rosalie G. Waller, Celine Vachon, Federico Canzian, and Daniele Campa
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Cancer Research ,genetic susceptibility ,multiple myeloma ,pleiotropy ,pleiotropy scan ,polymorphisms ,Humans ,Oncogenes ,Alleles ,Phenotype ,Polymorphism, Single Nucleotide ,Genome-Wide Association Study ,Genetic Predisposition to Disease ,HSP40 Heat-Shock Proteins ,DNA-Binding Proteins ,RNA-Binding Proteins ,Multiple Myeloma ,Single Nucleotide ,Oncology ,Polymorphism - Abstract
Pleiotropy, which consists of a single gene or allelic variant affecting multiple unrelated traits, is common across cancers, with evidence for genome-wide significant loci shared across cancer and noncancer traits. This feature is particularly relevant in multiple myeloma (MM) because several susceptibility loci that have been identified to date are pleiotropic. Therefore, the aim of this study was to identify novel pleiotropic variants involved in MM risk using 28 684 independent single nucleotide polymorphisms (SNPs) from GWAS Catalog that reached a significant association (P < 5 × 10−8) with their respective trait. The selected SNPs were analyzed in 2434 MM cases and 3446 controls from the International Lymphoma Epidemiology Consortium (InterLymph). The 10 SNPs showing the strongest associations with MM risk in InterLymph were selected for replication in an independent set of 1955 MM cases and 1549 controls from the International Multiple Myeloma rESEarch (IMMEnSE) consortium and 418 MM cases and 147 282 controls from the FinnGen project. The combined analysis of the three studies identified an association between DNAJB4-rs34517439-A and an increased risk of developing MM (OR = 1.22, 95%CI 1.13-1.32, P = 4.81 × 10−7). rs34517439-A is associated with a modified expression of the FUBP1 gene, which encodes a multifunctional DNA and RNA-binding protein that it was observed to influence the regulation of various genes involved in cell cycle regulation, among which various oncogenes and oncosuppressors. In conclusion, with a pleiotropic scan approach we identified DNAJB4-rs34517439 as a potentially novel MM risk locus.
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- 2022
19. Does a Multiple Myeloma Polygenic Risk Score Predict Overall Survival of Patients with Myeloma?
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Angelica Macauda, Alyssa Clay-Gilmour, Thomas Hielscher, Michelle A.T. Hildebrandt, Marcin Kruszewski, Robert Z. Orlowski, Shaji K. Kumar, Elad Ziv, Enrico Orciuolo, Elizabeth E. Brown, Asta Försti, Rosalie G. Waller, Mitchell J. Machiela, Stephen J. Chanock, Nicola J. Camp, Marcin Rymko, Małgorzata Raźny, Wendy Cozen, Judit Várkonyi, Chiara Piredda, Matteo Pelosini, Alem A. Belachew, Edyta Subocz, Kari Hemminki, Malwina Rybicka-Ramos, Graham G. Giles, Roger L. Milne, Jonathan N. Hofmann, Jan Maciej Zaucha, Annette Juul Vangsted, Hartmut Goldschmidt, S. Vincent Rajkumar, Waldemar Tomczak, Juan Sainz, Aleksandra Butrym, Marzena Watek, Elżbieta Iskierka-Jazdzewska, Gabriele Buda, Dennis P. Robinson, Artur Jurczyszyn, Marek Dudziński, Joaquin Martinez-Lopez, Jason P. Sinnwell, Susan L. Slager, Krzysztof Jamroziak, Rui Manuel Vieira Reis, Niels Weinhold, Parveen Bhatti, Luis G. Carvajal-Carmona, Daria Zawirska, Aaron D. Norman, Grzegorz Mazur, Sonja I. Berndt, Daniele Campa, Celine M. Vachon, and Federico Canzian
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Oncology ,Risk Factors ,Epidemiology ,Humans ,Genetic Predisposition to Disease ,Multiple Myeloma ,Polymorphism, Single Nucleotide ,Genome-Wide Association Study - Abstract
Background: Genome-wide association studies (GWAS) of multiple myeloma in populations of European ancestry (EA) identified and confirmed 24 susceptibility loci. For other cancers (e.g., colorectum and melanoma), risk loci have also been associated with patient survival. Methods: We explored the possible association of all the known risk variants and their polygenic risk score (PRS) with multiple myeloma overall survival (OS) in multiple populations of EA [the International Multiple Myeloma rESEarch (IMMEnSE) consortium, the International Lymphoma Epidemiology consortium, CoMMpass, and the German GWAS] for a total of 3,748 multiple myeloma cases. Cox proportional hazards regression was used to assess the association between each risk SNP with OS under the allelic and codominant models of inheritance. All analyses were adjusted for age, sex, country of origin (for IMMEnSE) or principal components (for the others) and disease stage (ISS). SNP associations were meta-analyzed. Results: SNP associations were meta-analyzed. From the meta-analysis, two multiple myeloma risk SNPs were associated with OS (P < 0.05), specifically POT1-AS1-rs2170352 [HR = 1.37; 95% confidence interval (CI) = 1.09–1.73; P = 0.007] and TNFRSF13B-rs4273077 (HR = 1.19; 95% CI = 1.01–1.41; P = 0.04). The association between the combined 24 SNP MM-PRS and OS, however, was not significant. Conclusions: Overall, our results did not support an association between the majority of multiple myeloma risk SNPs and OS. Impact: This is the first study to investigate the association between multiple myeloma PRS and OS in multiple myeloma.
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- 2022
20. An algorithm for quantitatively estimating occupational endotoxin exposure in the Biomarkers of Exposure and Effect in Agriculture (BEEA) study: I. Development of task‐specific exposure levels from published data
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Melissa C. Friesen, Shuai Xie, Jean‐François Sauvé, Susan Marie Viet, Pabitra R. Josse, Sarah J. Locke, Felicia Hung, Gabriella Andreotti, Peter S. Thorne, Jonathan N. Hofmann, and Laura E. Beane Freeman
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Public Health, Environmental and Occupational Health - Published
- 2023
21. An algorithm for quantitatively estimating occupational endotoxin exposure in the biomarkers of exposure and effect in agriculture study: II. Application to the study population
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Melissa C. Friesen, Laura E. Beane Freeman, Sarah J. Locke, Pabitra R. Josse, Shuai Xie, Susan Marie Viet, Jean‐François Sauvé, Gabriella Andreotti, Peter S. Thorne, and Jonathan N. Hofmann
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Public Health, Environmental and Occupational Health - Published
- 2023
22. Evaluation of the updated SOCcer v2 algorithm for coding free-text job descriptions in three epidemiologic studies
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Daniel E Russ, Pabitra Josse, Thomas Remen, Jonathan N Hofmann, Mark P Purdue, Jack Siemiatycki, Debra T Silverman, Yawei Zhang, Jerome Lavoué, and Melissa C Friesen
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Public Health, Environmental and Occupational Health - Abstract
Objectives Computer-assisted coding of job descriptions to standardized occupational classification codes facilitates evaluating occupational risk factors in epidemiologic studies by reducing the number of jobs needing expert coding. We evaluated the performance of the 2nd version of SOCcer, a computerized algorithm designed to code free-text job descriptions to US SOC-2010 system based on free-text job titles and work tasks, to evaluate its accuracy. Methods SOCcer v2 was updated by expanding the training data to include jobs from several epidemiologic studies and revising the algorithm to account for nonlinearity and incorporate interactions. We evaluated the agreement between codes assigned by experts and the highest scoring code (a measure of confidence in the algorithm-predicted assignment) from SOCcer v1 and v2 in 14,714 jobs from three epidemiology studies. We also linked exposure estimates for 258 agents in the job-exposure matrix CANJEM to the expert and SOCcer v2-assigned codes and compared those estimates using kappa and intraclass correlation coefficients. Analyses were stratified by SOCcer score, score distance between the top two scoring codes from SOCcer, and features from CANJEM. Results SOCcer’s v2 agreement at the 6-digit level was 50%, compared to 44% in v1, and was similar for the three studies (38%–45%). Overall agreement for v2 at the 2-, 3-, and 5-digit was 73%, 63%, and 56%, respectively. For v2, median ICCs for the probability and intensity metrics were 0.67 (IQR 0.59–0.74) and 0.56 (IQR 0.50–0.60), respectively. The agreement between the expert and SOCcer assigned codes linearly increased with SOCcer score. The agreement also improved when the top two scoring codes had larger differences in score. Conclusions Overall agreement with SOCcer v2 applied to job descriptions from North American epidemiologic studies was similar to the agreement usually observed between two experts. SOCcer’s score predicted agreement with experts and can be used to prioritize jobs for expert review.
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- 2023
23. Supplemental Table 1. from A Pooled Analysis of Reproductive Factors, Exogenous Hormone Use, and Risk of Multiple Myeloma among Women in the International Multiple Myeloma Consortium
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Silvia de Sanjosé, Elisabeth E. Brown, Anthony Staines, Paolo Boffetta, Lenka Foretová, Marc Maynadié, Nikolaus Becker, Alexandra Nieters, Pierluigi Cocco, Paul Brennan, Djordje Atanackovic, Guido Tricot, Nicola J. Camp, Sophia S. Wang, Dalsu Baris, Jonathan N. Hofmann, Anneclaire J. De Roos, Kirsten B. Moysich, Brenda M. Birmann, Brice H. Lambert, and Laura Costas
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Characteristics of the studies included in the analysis of reproductive factors, exogenous hormone use, and risk of multiple myeloma.
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- 2023
24. Data from A Pooled Analysis of Reproductive Factors, Exogenous Hormone Use, and Risk of Multiple Myeloma among Women in the International Multiple Myeloma Consortium
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Silvia de Sanjosé, Elisabeth E. Brown, Anthony Staines, Paolo Boffetta, Lenka Foretová, Marc Maynadié, Nikolaus Becker, Alexandra Nieters, Pierluigi Cocco, Paul Brennan, Djordje Atanackovic, Guido Tricot, Nicola J. Camp, Sophia S. Wang, Dalsu Baris, Jonathan N. Hofmann, Anneclaire J. De Roos, Kirsten B. Moysich, Brenda M. Birmann, Brice H. Lambert, and Laura Costas
- Abstract
Background: Female sex hormones are known to have immunomodulatory effects. Therefore, reproductive factors and exogenous hormone use could influence the risk of multiple myeloma in women. However, the role of hormonal factors in multiple myeloma etiology remains unclear because previous investigations were underpowered to detect modest associations.Methods: We conducted a pooled analysis of seven case–control studies included in the International Multiple Myeloma Consortium, with individual data on reproductive factors and exogenous hormone use from 1,072 female cases and 3,541 female controls. Study-specific odds ratios and corresponding 95% confidence intervals (CI) were estimated using logistic regression and pooled analyses were conducted using random effects meta-analyses.Results: Multiple myeloma was not associated with reproductive factors, including ever parous [OR = 0.92; 95% confidence interval (CI), 0.68–1.25], or with hormonal contraception use (OR = 1.04; 95% CI, 0.80–1.36). Postmenopausal hormone therapy users had nonsignificantly reduced risks of multiple myeloma compared with never users, but this association differed across centers (OR = 0.65; 95% CI, 0.37–1.15, I2 = 76.0%, Pheterogeneity = 0.01).Conclusions: These data do not support a role for reproductive factors or exogenous hormones in myelomagenesis.Impact: Incidence rates of multiple myeloma are higher in men than in women, and sex hormones could influence this pattern. Associations with reproductive factors and exogenous hormone use were inconclusive despite our large sample size, suggesting that female sex hormones may not play a significant role in multiple myeloma etiology. Cancer Epidemiol Biomarkers Prev; 25(1); 217–21. ©2015 AACR.
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- 2023
25. Supplemental Figure 1. from A Pooled Analysis of Reproductive Factors, Exogenous Hormone Use, and Risk of Multiple Myeloma among Women in the International Multiple Myeloma Consortium
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Silvia de Sanjosé, Elisabeth E. Brown, Anthony Staines, Paolo Boffetta, Lenka Foretová, Marc Maynadié, Nikolaus Becker, Alexandra Nieters, Pierluigi Cocco, Paul Brennan, Djordje Atanackovic, Guido Tricot, Nicola J. Camp, Sophia S. Wang, Dalsu Baris, Jonathan N. Hofmann, Anneclaire J. De Roos, Kirsten B. Moysich, Brenda M. Birmann, Brice H. Lambert, and Laura Costas
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Study-specific risks of multiple myeloma for postmenopausal hormone therapy (HT), age at first HT use and years of HT use.
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- 2023
26. Supplementary Table 1 from A Prospective Study of Leukocyte Telomere Length and Risk of Renal Cell Carcinoma
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Mark P. Purdue, Wong-Ho Chow, Nathaniel Rothman, Lee E. Moore, Brian Shuch, H. Dean Hosgood, Richard Cawthon, Qing Lan, and Jonathan N. Hofmann
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Determinants of leukocyte telomere length among controls
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- 2023
27. Data from A Prospective Study of Leukocyte Telomere Length and Risk of Renal Cell Carcinoma
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Mark P. Purdue, Wong-Ho Chow, Nathaniel Rothman, Lee E. Moore, Brian Shuch, H. Dean Hosgood, Richard Cawthon, Qing Lan, and Jonathan N. Hofmann
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Background: It has been hypothesized that genomic instability related to telomere dysfunction may contribute to carcinogenesis. There is some evidence from case–control studies suggesting that short leukocyte telomere length may be associated with an increased risk of renal cell carcinoma (RCC); however, this association has not been investigated prospectively.Methods: We conducted a nested case–control study (209 cases, 410 controls) of RCC risk in relation to prediagnostic leukocyte telomere length in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. ORs and 95% confidence intervals (CI) were estimated using conditional logistic regression.Results: Leukocyte telomere length was not significantly associated with future risk of RCC (highest quartile vs. lowest: OR, 0.8; 95% CI, 0.5–1.5; Ptrend = 0.6). Analyses stratified by sex, age, and time from blood collection to RCC diagnosis were similarly null.Conclusions: The results of this study, to our knowledge the first prospective investigation of its kind, do not support an association between prediagnostic leukocyte telomere length and risk of RCC.Impact: In contrast to some earlier reports, our findings add to the evidence that leukocyte telomere length is not a biomarker of risk related to the etiology of RCC. Cancer Epidemiol Biomarkers Prev; 22(5); 997–1000. ©2013 AACR.
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- 2023
28. Data from Farm Characteristics, Allergy Symptoms, and Risk of Non-Hodgkin Lymphoid Neoplasms in the Agricultural Health Study
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Laura E. Beane Freeman, Michael C. Alavanja, Aaron Blair, Mark P. Purdue, Jill A. Poole, Charles F. Lynch, Jane A. Hoppin, and Jonathan N. Hofmann
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Background: Because of unique exposures, studies among farmers may yield insights into the relationship between allergies and non-Hodgkin lymphoid (NHL) neoplasms. We evaluated farm characteristics, allergic symptoms and conditions, and risk of NHL including specific subtypes in the Agricultural Health Study, a prospective cohort of farmers and spouses from North Carolina and Iowa.Methods: We identified 710 incident cases of NHL (including chronic lymphocytic leukemia and multiple myeloma) among 82,370 participants with baseline data on crop and animal exposures, including 454 cases among 52,850 participants with baseline data on recent allergy symptoms (rhinitis) and living on a farm during childhood. HR and 95% confidence intervals (CI) were calculated using multivariable-adjusted proportional hazards models.Results: We observed reduced risks of NHL among farmers and spouses with rhinitis at baseline (HR, 0.63; 95% CI, 0.51–0.79), related to growing soybeans (HR, 0.80; 95% CI, 0.67–0.96), and among farmers who handled stored grains or hay (HR, 0.66; 95% CI, 0.52–0.82). Growing up on a farm was associated with increased NHL risk (HR, 1.51; 95% CI, 1.15–1.98). Results did not differ significantly by NHL subtype.Conclusions: Both the reduced risk of NHL among those with allergy symptoms and specific farm exposures in adulthood, and the increased risk among those who grew up on a farm suggest that the host immune response to agricultural allergens may influence NHL development.Impact: This prospective study is, to our knowledge, the first to investigate the relationship between allergy symptoms and NHL risk in farmers; confirmation of these findings in other farming populations is warranted. Cancer Epidemiol Biomarkers Prev; 24(3); 587–94. ©2015 AACR.
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- 2023
29. Supplementary Table S1 from Low Levels of Circulating Adiponectin Are Associated with Multiple Myeloma Risk in Overweight and Obese Individuals
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Mark P. Purdue, Marian L. Neuhouser, Michael N. Pollak, Stephanie J. Weinstein, Nathaniel Rothman, Linda M. Liao, Ola Landgren, Qing Lan, H. Dean Hosgood, Graham G. Giles, Anneclaire J. De Roos, Graham A. Colditz, Dalsu Baris, Demetrius Albanes, Ye Wang, Ruth M. Pfeiffer, Lauren R. Teras, Brenda M. Birmann, and Jonathan N. Hofmann
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Determinants of circulating levels of total adiponectin (µg/mL) among pooled controls.
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- 2023
30. Supplementary Figure S1 from Low Levels of Circulating Adiponectin Are Associated with Multiple Myeloma Risk in Overweight and Obese Individuals
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Mark P. Purdue, Marian L. Neuhouser, Michael N. Pollak, Stephanie J. Weinstein, Nathaniel Rothman, Linda M. Liao, Ola Landgren, Qing Lan, H. Dean Hosgood, Graham G. Giles, Anneclaire J. De Roos, Graham A. Colditz, Dalsu Baris, Demetrius Albanes, Ye Wang, Ruth M. Pfeiffer, Lauren R. Teras, Brenda M. Birmann, and Jonathan N. Hofmann
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Risk of MM in relation to circulating total adiponectin levels estimated using a restricted cubic spline regression model with 4 knots.
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- 2023
31. Supplemenatary Methods and References from Low Levels of Circulating Adiponectin Are Associated with Multiple Myeloma Risk in Overweight and Obese Individuals
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Mark P. Purdue, Marian L. Neuhouser, Michael N. Pollak, Stephanie J. Weinstein, Nathaniel Rothman, Linda M. Liao, Ola Landgren, Qing Lan, H. Dean Hosgood, Graham G. Giles, Anneclaire J. De Roos, Graham A. Colditz, Dalsu Baris, Demetrius Albanes, Ye Wang, Ruth M. Pfeiffer, Lauren R. Teras, Brenda M. Birmann, and Jonathan N. Hofmann
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Description of additional methods and procedures used in the study. Also includes Supplementary References.
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- 2023
32. Data from Low Levels of Circulating Adiponectin Are Associated with Multiple Myeloma Risk in Overweight and Obese Individuals
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Mark P. Purdue, Marian L. Neuhouser, Michael N. Pollak, Stephanie J. Weinstein, Nathaniel Rothman, Linda M. Liao, Ola Landgren, Qing Lan, H. Dean Hosgood, Graham G. Giles, Anneclaire J. De Roos, Graham A. Colditz, Dalsu Baris, Demetrius Albanes, Ye Wang, Ruth M. Pfeiffer, Lauren R. Teras, Brenda M. Birmann, and Jonathan N. Hofmann
- Abstract
The association between obesity and multiple myeloma risk may be partly attributed to reduced circulating levels of adiponectin in obese individuals. To prospectively evaluate multiple myeloma risk in relation to adiponectin levels overall and stratified by body mass index and other characteristics, we conducted a pooled investigation of pre-diagnosed peripheral blood samples from 624 multiple myeloma cases and 1,246 individually matched controls from seven cohorts participating in the Multiple Myeloma Cohort Consortium. Analysis of circulating analyte levels measured by ELISA revealed that higher total adiponectin levels were associated with reduced multiple myeloma risk overall [highest quartile vs. lowest: OR, 0.64; 95% confidence interval (CI) 0.47–0.85; Ptrend = 0.001]. This association was apparent among cases diagnosed six or more years after blood collection (OR, 0.60; 95% CI, 0.40–0.90; Ptrend = 0.004) and was similar in magnitude for men and women (OR, 0.59 and 0.66, respectively). Interestingly, we observed strong associations among subjects who were overweight (OR, 0.41; 95% CI, 0.26–0.65) or obese (OR, 0.41; 95% CI, 0.17–0.98) but not among those with normal weight (OR, 1.20; 95% CI, 0.73–2.00; overweight/obese vs. normal weight, Pinteraction = 0.04). Our findings provide the strongest epidemiologic evidence to date that adiponectin protects against multiple myeloma development, particularly among overweight and obese individuals, and offer a method for risk assessment in this susceptible population of heavier patients. Cancer Res; 76(7); 1935–41. ©2016 AACR.
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- 2023
33. Serum perfluorooctane sulfonate and perfluorooctanoate and risk of postmenopausal breast cancer according to hormone receptor status: An analysis in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial
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Vicky C. Chang, Jongeun Rhee, Sonja I. Berndt, Steven C. Moore, Neal D. Freedman, Rena R. Jones, Debra T. Silverman, Gretchen L. Gierach, Jonathan N. Hofmann, and Mark P. Purdue
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Cancer Research ,Oncology - Published
- 2023
34. Urinary biomonitoring of glyphosate exposure among male farmers and non-farmers in the Biomarkers of Exposure and Effect in Agriculture (BEEA) study
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Vicky C. Chang, Maria Ospina, Shuai Xie, Gabriella Andreotti, Melissa C. Friesen, Danping Liu, Nathaniel Rothman, Debra T. Silverman, Laura E. Beane Freeman, Antonia M. Calafat, and Jonathan N. Hofmann
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General Earth and Planetary Sciences ,General Environmental Science - Published
- 2022
35. A prospective nested case-control study of serum concentrations of per- and polyfluoroalkyl substances and aggressive prostate cancer risk
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Jongeun Rhee, Kathryn H. Barry, Wen-Yi Huang, Joshua N. Sampson, Jonathan N. Hofmann, Debra T. Silverman, Antonia M. Calafat, Julianne Cook Botelho, Kayoko Kato, Mark P. Purdue, and Sonja I. Berndt
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Biochemistry ,General Environmental Science - Published
- 2023
36. A Task-Specific Algorithm to Estimate Occupational (1→3)-β-D-glucan Exposure for Farmers in the Biomarkers of Exposure and Effect in Agriculture Study
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Melissa C Friesen, Felicia Hung, Shuai Xie, Susan M Viet, Nicole C Deziel, Sarah J Locke, Pabitra R Josse, Jean-François Sauvé, Gabriella Andreotti, Peter S Thorne, Laura E Beane-Freeman, and Jonathan N Hofmann
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Inhalation Exposure ,Farmers ,Swine ,Public Health, Environmental and Occupational Health ,Agriculture ,Original Articles ,Occupational Exposure ,Animals ,Humans ,Edible Grain ,Glucans ,Algorithms ,Biomarkers ,Environmental Monitoring - Abstract
Objectives Farmers may be exposed to glucans (a cell component of molds) through a variety of tasks. The magnitude of exposure depends on each farmer’s activities and their duration. We developed a task-specific algorithm to estimate glucan exposure that combines measurements of (1→3)-β-D-glucan with questionnaire responses from farmers in the Biomarkers of Exposure and Effect in Agriculture (BEEA) study. Methods To develop the algorithm, we first derived task-based geometric means (GMs) of glucan exposure for farming tasks using inhalable personal air sampling data from a prior air monitoring study in a subset of 32 BEEA farmers. Next, these task-specific GMs were multiplied by subject-reported activity frequencies for three time windows (the past 30 days, past 7 days, and past 1 day) to obtain subject-, task-, and time window-specific glucan scores. These were summed together to obtain a total glucan score for each subject and time window. We examined the within- and between-task correlation in glucan scores for different time frames. Additionally, we assessed the algorithm for the ‘past 1 day’ time window using full-shift concentrations from the 32 farmers who participated in air monitoring the day prior to an interview using multilevel statistical models to compare the measured glucan concentration with algorithm glucan scores. Results We focused on the five highest exposed tasks: poultry confinement (300 ng/m3), swine confinement (300 ng/m3), clean grain bins (200 ng/m3), grind feed (100 ng/m3), and stored seed or grain (50 ng/m3); the remaining tasks were Conclusions This study provides insight into the variability and key sources of glucan exposure in a US farming population. It also provides a framework for better glucan exposure assessment in epidemiologic studies and is a crucial starting point for evaluating health risks associated with glucans in future epidemiologic evaluations of this population.
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- 2022
37. Abstract 4220: Occupational pesticide use and relative leukocyte telomere length in the biomarkers of exposure and effect in agriculture study
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Patricia A. Erickson, Vicky C. Chang, Casey L. Dagnall, Kedest Teshome, Mitchell J. Machiela, Kathryn H. Barry, Shahinaz M. Gadalla, Laura E. Beane Freeman, Gabriella Andreotti, and Jonathan N. Hofmann
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Cancer Research ,Oncology - Abstract
Background: Previous epidemiologic studies have reported increased risks of certain cancers in relation to specific pesticide exposures, although the mechanisms underlying many of these associations remain poorly understood. Within the Biomarkers of Exposure and Effect in Agriculture (BEEA) study, a molecular epidemiologic investigation of pesticide applicators in Iowa and North Carolina, we examined whether occupational use of pesticides is associated with alterations in leukocyte telomere length. Telomeres are essential in maintaining chromosomal stability and altered telomere length has been linked to various malignancies. Methods: Relative telomere length (RTL) was measured using quantitative PCR in leukocytes from 1,539 male pesticide applicators ≥50 years of age. Using self-reported information on pesticide use, we characterized lifetime use of specific pesticides in terms of ever use and intensity-weighted lifetime days (IWLDs), a metric integrating total lifetime days of use and other factors influencing exposure. Multivariable linear regression models were used to estimate differences in geometric mean RTL (and corresponding 95% confidence intervals) by ever vs. never use of 48 pesticides and in exposure-response analyses for IWLDs of use of 46 pesticides, adjusting for age, state of residence, race/ethnicity, body mass index, and cigarette smoking status and pack-years. Results: Among ever users of the insecticides lindane and aldicarb, mean RTL was significantly longer compared to never users (p=0.01 and 0.03, respectively); in exposure-response analyses, we also observed a suggestive but non-statistically significant trend between increasing IWLDs of lindane use and longer RTL (p-trend=0.07). Higher IWLDs of use of the insecticide diazinon was also associated with longer RTL (p-trend=0.03) while increasing IWLDs of the insecticide heptachlor and the herbicide 2,4,5-TP were associated with shorter RTL (p-trends=0.04 and 0.03, respectively). Conclusions: This is, to our knowledge, the largest investigation of occupational pesticide use and RTL to date. Our findings provide novel evidence suggesting that use of certain pesticides could be associated with altered leukocyte telomere length. Notably, diazinon and lindane have previously been associated with increased risks of lung and lymphoid malignancies, respectively, and longer leukocyte telomere length has been implicated in the development of these cancers. Citation Format: Patricia A. Erickson, Vicky C. Chang, Casey L. Dagnall, Kedest Teshome, Mitchell J. Machiela, Kathryn H. Barry, Shahinaz M. Gadalla, Laura E. Beane Freeman, Gabriella Andreotti, Jonathan N. Hofmann. Occupational pesticide use and relative leukocyte telomere length in the biomarkers of exposure and effect in agriculture study. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 4220.
- Published
- 2023
38. Juxtaposition of intensive agriculture, vulnerable aquifers, and mixed chemical/microbial exposures in private-well tapwater in northeast Iowa
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Paul M. Bradley, Dana W. Kolpin, Darrin A. Thompson, Kristin M. Romanok, Kelly L. Smalling, Sara E. Breitmeyer, Mary C. Cardon, David M. Cwiertny, Nicola Evans, R. William Field, Michael J. Focazio, Laura E. Beane Freeman, Carrie E. Givens, James L. Gray, Gordon L. Hager, Michelle L. Hladik, Jonathan N. Hofmann, Rena R. Jones, Leslie K. Kanagy, Rachael F. Lane, R. Blaine McCleskey, Danielle Medgyesi, Elizabeth K. Medlock-Kakaley, Shannon M. Meppelink, Michael T. Meyer, Diana A. Stavreva, and Mary H. Ward
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Environmental Engineering ,Environmental Chemistry ,Pollution ,Waste Management and Disposal - Published
- 2023
39. Diet and Risk of Myeloproliferative Neoplasms in Older Individuals from the NIH-AARP Cohort
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Ruben A. Mesa, Xiaoyi Wang, Xiaomei Ma, Linda M. Liao, Rong Wang, Nikolai A. Podoltsev, Jonathan N. Hofmann, and Amer M. Zeidan
- Subjects
Male ,0301 basic medicine ,medicine.medical_specialty ,Epidemiology ,Article ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,Humans ,Prospective cohort study ,Aged ,Myeloproliferative Disorders ,Proportional hazards model ,Essential thrombocythemia ,business.industry ,Hazard ratio ,Confounding ,Middle Aged ,medicine.disease ,United States ,Confidence interval ,Diet ,030104 developmental biology ,National Institutes of Health (U.S.) ,Oncology ,030220 oncology & carcinogenesis ,Cohort ,Etiology ,Female ,business - Abstract
Background: The etiology of myeloproliferative neoplasms (MPN) is obscure, and no previous studies have evaluated the role of diet. Methods: In the NIH-AARP Diet and Health Study, a prospective cohort of 463,049 participants ages 50 to 71 years at baseline (1995–1996), we identified 490 MPN cases after a median follow-up of 15.5 years, including 190 with polycythemia vera (PV) and 146 with essential thrombocythemia (ET). We examined possible associations between various dietary factors and the risk of MPN as a group, as well as PV and ET, using multivariable Cox proportional hazards models to estimate hazard ratios (HR) and 95% confidence intervals (CI) and adjust for potential confounding variables. Results: An increased risk was observed between fruit consumption and the risk of MPN overall (third tertile vs. first tertile, HR = 1.32; 95% CI, 1.04–1.67; Ptrend = 0.02) and PV (third tertile vs. first tertile, HR = 2.00; 95% CI, 1.35–2.95; Ptrend < 0.01). Increased risk of PV was also observed among those with high intake of sugar (HR = 1.77; 95% CI, 1.12–2.79), sugar from natural sources (HR = 1.77; 95% CI, 1.16–2.71), sugar from natural beverage sources (HR = 1.57; 95% CI, 1.08–2.29), and fructose (HR = 1.84; 95% CI, 1.21–2.79). Conclusions: The intake of fat and protein did not appear to influence PV risk—neither did meat or vegetable consumption. None of the dietary factors studied was associated with the risk of ET. The role of sugar intake in the etiology of PV in older individuals warrants further investigation. Impact: Our results indicate that high sugar intake is associated with an increased risk of polycythemia vera.
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- 2020
40. Coinherited genetics of multiple myeloma and its precursor, monoclonal gammopathy of undetermined significance
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John J. Spinelli, Elizabeth E. Brown, Shaji Kumar, Sonja I. Berndt, Celine M. Vachon, Susan L. Slager, Alem A. Belachew, Jason P. Sinnwell, Stephen J. Chanock, Elad Ziv, Aaron D. Norman, Mitchell J. Machiela, Michelle A.T. Hildebrandt, Wendy Cozen, Nicola J. Camp, Roger L. Milne, Rosalie G. Waller, Alyssa I. Clay-Gilmour, Graham G. Giles, Jonathan N. Hofmann, S. Vincent Rajkumar, Parveen Bhatti, Xifeng Wu, and Dennis P. Robinson
- Subjects
medicine.medical_specialty ,Lymphoid Neoplasia ,business.industry ,Genome-wide association study ,Hematology ,Odds ratio ,Heritability ,medicine.disease ,Monoclonal Gammopathy of Undetermined Significance ,Gastroenterology ,Confidence interval ,hemic and lymphatic diseases ,Internal medicine ,Odds Ratio ,medicine ,Genetic predisposition ,Humans ,Genetic Predisposition to Disease ,Multiple Myeloma ,business ,Monoclonal gammopathy of undetermined significance ,Multiple myeloma ,Genome-Wide Association Study ,Genetic association - Abstract
So far, 23 germline susceptibility loci have been associated with multiple myeloma (MM) risk. It is unclear whether the genetic variation associated with MM susceptibility also predisposes to its precursor, monoclonal gammopathy of undetermined significance (MGUS). Leveraging 2434 MM cases, 754 MGUS cases, and 2 independent sets of controls (2567/879), we investigated potential shared genetic susceptibility of MM and MGUS by (1) performing MM and MGUS genome-wide association studies (GWAS); (2) validating the association of a polygenic risk score (PRS) based on 23 established MM loci (MM-PRS) with risk of MM, and for the first time with MGUS; and (3) examining genetic correlation of MM and MGUS. Heritability and genetic estimates yielded 17% (standard error [SE] ±0.04) and 15% (SE ±0.11) for MM and MGUS risk, respectively, and a 55% (SE ±0.30) genetic correlation. The MM-PRS was associated with risk of MM when assessed continuously (odds ratio [OR], 1.17 per SD; 95% confidence interval [CI], 1.13-1.21) or categorically (OR, 1.70; 95% CI, 1.38-2.09 for highest; OR, 0.71; 95% CI, 0.55-0.90 for lowest compared with middle quintile). The MM-PRS was similarly associated with MGUS (OR, 1.19 per SD; 95% CI, 1.14-1.26 as a continuous measure, OR, 1.77, 95%CI: 1.29-2.43 for highest and OR, 0.70, 95%CI: 0.50-0.98 for lowest compared with middle quintile). MM and MGUS associations did not differ by age, sex, or MM immunoglobulin isotype. We validated a 23-SNP MM-PRS in an independent series of MM cases and provide evidence for its association with MGUS. Our results suggest shared common genetic susceptibility to MM and MGUS.
- Published
- 2020
41. Dicamba use and cancer incidence in the agricultural health study: an updated analysis
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Catherine C. Lerro, Stella Koutros, Gabriella Andreotti, Dale P. Sandler, Jay H. Lubin, Aaron Blair, Christine G. Parks, Paul S. Albert, Jonathan N. Hofmann, and Laura E. Beane Freeman
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Oncology ,medicine.medical_specialty ,Epidemiology ,Colorectal cancer ,03 medical and health sciences ,chemistry.chemical_compound ,symbols.namesake ,0302 clinical medicine ,Neoplasms ,Occupational Exposure ,Internal medicine ,Dicamba ,North Carolina ,Humans ,Medicine ,Prospective Studies ,030212 general & internal medicine ,Poisson regression ,Pesticides ,Lung cancer ,Prospective cohort study ,business.industry ,Incidence ,Cancer ,General Medicine ,medicine.disease ,Iowa ,Agricultural Workers' Diseases ,Miscellaneous ,chemistry ,030220 oncology & carcinogenesis ,Relative risk ,symbols ,business ,Liver cancer - Abstract
Background The herbicide dicamba has been commonly used agriculturally and residentially. Recent approval of genetically engineered dicamba-resistant crops is expected to lead to increased dicamba use, and there has been growing interest in potential human health effects. A prior analysis in the Agricultural Health Study (AHS) suggested associations between dicamba and colon and lung cancer. We re-evaluated dicamba use in the AHS, including an additional 12 years and 2702 exposed cancers. Methods The AHS is a prospective cohort of pesticide applicators in Iowa and North Carolina. At enrollment (1993–1997) and follow-up (1999–2005), participants reported dicamba use. Exposure was characterized by cumulative intensity-weighted lifetime days, including exposure lags of up to 20 years. We estimated relative risks (RR) and 95% confidence intervals (CI) using multivariable Poisson regression for incident cancers diagnosed from enrollment through 2014/2015. Results Among 49 922 applicators, 26 412 (52.9%) used dicamba. Compared with applicators reporting no dicamba use, those in the highest quartile of exposure had elevated risk of liver and intrahepatic bile duct cancer (nexposed = 28, RRQ4 = 1.80, CI: 1.26–2.56, Ptrend < 0.001) and chronic lymphocytic leukaemia (CLL, nexposed = 93, RRQ4 = 1.20, CI: 0.96–1.50, Ptrend = 0.01) and decreased risk of myeloid leukaemia (nexposed = 55, RRQ4 = 0.73, CI: 0.51–1.03, Ptrend = 0.01). The associations for liver cancer and myeloid leukaemia remained after lagging exposure of up to 20 years. Conclusions With additional follow-up and exposure information, associations with lung and colon cancer were no longer apparent. In this first evaluation of liver and intrahepatic bile duct cancer, there was an association with increasing use of dicamba that persisted across lags of up to 20 years.
- Published
- 2020
42. Diesel Exhaust Exposure during Farming Activities: Statistical Modeling of Continuous Black Carbon Concentrations
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Ralph Altmaier, Jean-François Sauvé, Patrick T. O'Shaughnessy, Rena R. Jones, Emma M. Stapleton, Pabitra R Josse, Paul S. Albert, D. Silverman, Peter S. Thorne, Beane Freeman Le, Sarah J. Locke, Jonathan N. Hofmann, Liu D, and Melissa C. Friesen
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Tractor ,Farms ,Diesel exhaust ,business.product_category ,010504 meteorology & atmospheric sciences ,Biomass ,010501 environmental sciences ,Diesel engine ,complex mixtures ,01 natural sciences ,Toxicology ,Diesel fuel ,Occupational Exposure ,Humans ,Vehicle Emissions ,0105 earth and related environmental sciences ,Models, Statistical ,Public Health, Environmental and Occupational Health ,food and beverages ,Sampling (statistics) ,Agriculture ,Original Articles ,Random effects model ,Carbon ,respiratory tract diseases ,Sample size determination ,Environmental science ,business - Abstract
Objectives Daily driving of diesel-powered tractors has been linked to increased lung cancer risk in farmers, yet few studies have quantified exposure levels to diesel exhaust during tractor driving or during other farm activities. We expanded an earlier task-based descriptive investigation of factors associated with real-time exposure levels to black carbon (BC, a surrogate of diesel exhaust) in Iowa farmers by increasing the sample size, collecting repeated measurements, and applying statistical models adapted to continuous measurements. Methods The expanded study added 43 days of sampling, for a total of 63 sample days conducted in 2015 and 2016 on 31 Iowa farmers. Real-time, continuous monitoring (30-s intervals) of personal BC concentrations was performed using a MicroAeth AE51 microaethelometer affixed with a micro-cyclone. A field researcher recorded information on tasks, fuel type, farmer location, and proximity to burning biomass. We evaluated the influence of these variables on log-transformed BC concentrations using a linear mixed-effect model with random effects for farmer and day and a first-order autoregressive structure for within-day correlation. Results Proximity to diesel-powered equipment was observed for 42.5% of the overall sampling time and on 61 of the 63 sample days. Predicted geometric mean BC concentrations were highest during grain bin work, loading, and harvesting, and lower for soil preparation and planting. A 68% increase in BC concentrations was predicted for close proximity to a diesel-powered vehicle, relative to far proximity, while BC concentrations were 44% higher in diesel vehicles with open cabins compared with closed cabins. Task, farmer location, fuel type, and proximity to burning biomass explained 8% of within-day variance in BC concentrations, 2% of between-day variance, and no between-farmer variance. Conclusion Our findings showed that farmers worked frequently near diesel equipment and that BC concentrations varied between tasks and by fuel type, farmer location, and proximity to burning biomass. These results could support the development of exposure models applicable to investigations of health effects in farmers associated with exposure to diesel engine exhaust.
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- 2020
43. Observed versus self-reported agricultural activities: Evaluating 24-hour recall in a pilot study
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Felicia Hung, Jonathan N. Hofmann, Pabitra R. Josse, Sarah J. Locke, Emma M. Stapleton, Gabriella Andreotti, Nicole C. Deziel, Laura E. Beane Freeman, and Melissa C. Friesen
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Public Health, Environmental and Occupational Health ,Prevalence ,Animals ,Humans ,Agriculture ,Cattle ,Pilot Projects ,Prospective Studies ,Self Report ,Article - Abstract
Few studies have evaluated the validity of self-report of work activities because of challenges in obtaining objective measures. In this study, farmers’ recall of the previous day’s agricultural activities was compared to activities observed by field staff during air monitoring. Recall was assessed in 32 farmers from the Biomarkers of Exposure and Effect in Agriculture Study, a subset of a prospective cohort study. The farmers participated in 56 visits that comprised air monitoring the day before an interview. The answers for 14 agricultural activities were compared to activities observed by field staff during air monitoring (median duration 380 minutes, range 129–486). For each task, evaluated as yes/no, overall agreement, sensitivity, specificity, and kappa were calculated. Median prevalence of the 14 activities was 8% from observation and 13% from participants (range: 2–54%). Agreement was generally good to perfect, with a median overall agreement of 95% (range: 89–100%), median sensitivity of 84% (50–100%), median specificity of 95% (88–100%), and median kappa of 0.65 (0.31–1.0). Reasons for disagreement included activities occurring when the field staff was not present (i.e., milking cows), unclear timing notes that made it difficult to determine whether the activity occurred the day of and/or day before the interview, definition issues (i.e., participant included hauling in the definition of harvesting), and difficulty in observing details of an activity (i.e., whether hay was moldy). This study provides support for accurate participant recall the day after activities.
- Published
- 2022
44. High Pesticide Exposure Events and Dream-Enacting Behaviors Among US Farmers
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Yaqun Yuan, Srishti Shrestha, Zhehui Luo, Chenxi Li, Brenda L. Plassman, Christine G. Parks, Jonathan N. Hofmann, Laura E. Beane Freeman, Dale P. Sandler, and Honglei Chen
- Subjects
Adult ,Insecticides ,Farmers ,Prodromal Symptoms ,Parkinson Disease ,Agriculture ,REM Sleep Behavior Disorder ,Middle Aged ,Article ,Neurology ,Occupational Exposure ,Humans ,Neurology (clinical) ,Public Health ,Pesticides - Abstract
Dream-enacting behavior is a characteristic feature of rapid eye movement sleep behavior disorder, the most specific prodromal marker of synucleinopathies. Pesticide exposure may be associated with dream-enacting behaviors, but epidemiological evidence is limited.To examine high pesticide exposure events in relation to dream-enacting behaviors among farmers in the Agricultural Health Study.We conducted multivariable logistic regression analyses to examine high pesticide exposure events reported from 1993 to 1997 in relation to dream-enacting behaviors assessed from 2013 to 2015 among 11,248 farmers (age 47 ± 11 years).A history of dream-enacting behaviors was reported by 939 (8.3%) farmers. Compared with farmers who did not report any high pesticide exposure event, those who reported were more likely to endorse dream-enacting behaviors 2 decades later (odds ratio = 1.75; 95% confidence interval [CI], 1.49-2.05). The association appeared stronger when there was a long delay in washing with soap and water after the event (2.63 [95% CI, 1.62-4.27] for waiting6 hours vs. 1.71 [95% CI, 1.36-2.15] for washing within 30 minutes) and when the exposure involved the respiratory or digestive tract (2.04 [95% CI, 1.62-2.57] vs. 1.58 [95% CI, 1.29-1.93] for dermal contact only). In the analyses of specific pesticides involved, we found positive associations with two organochlorine insecticides (dichlorodiphenyltrichloroethane and lindane), four organophosphate insecticides (phorate, ethoprop, terbufos, and parathion), two herbicides (alachlor and paraquat), and fungicides as a group.This study provides the first epidemiological evidence that high pesticide exposures may be associated with a higher risk of dream-enacting behaviors. © 2022 International Parkinson and Movement Disorder Society.
- Published
- 2022
45. Abdominal and gluteofemoral size and risk of liver cancer: The liver cancer pooling project
- Author
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Cari M. Kitahara, Yunxia Lu, Howard D. Sesso, Jenny N. Poynter, Xuehong Zhang, Julie R. Palmer, Edward Giovannucci, Jean Wactawski-Wende, Katherine A. McGlynn, Martha S. Linet, Thomas E. Rohan, Peter T. Campbell, John Michael Gaziano, Andrew T. Chan, Andrea A. Florio, Mark P. Purdue, I-Min Lee, Laura E. Beane Freeman, Christina C. Newton, Susan M. Gapstur, Andrew G Renehan, Patrick T. Bradshaw, Tracey G. Simon, Anne Zeleniuch-Jacquotte, Dawn Q. Chong, Kim Robien, Linda M. Liao, Catherine Schairer, Jonathan N. Hofmann, Neal D. Freedman, Jane Demuth, Stephanie A. Smith-Warner, Jill Koshiol, Julie E. Buring, Rashmi Sinha, Victoria A. Kirsh, Jessica L. Petrick, Lynn Rosenberg, and Barry I. Graubard
- Subjects
Male ,Cancer Research ,Gastroenterology ,Body Mass Index ,Cholangiocarcinoma ,0302 clinical medicine ,intrahepatic cholangiocarcinoma ,Prospective Studies ,Prospective cohort study ,Abdominal obesity ,Cancer ,Adiposity ,Liver Disease ,Liver Neoplasms ,Hazard ratio ,hepatocellular carcinoma ,Middle Aged ,Circumference ,Oncology ,030220 oncology & carcinogenesis ,epidemiology ,Female ,Waist Circumference ,medicine.symptom ,Liver cancer ,Liver Cancer ,Adult ,medicine.medical_specialty ,Carcinoma, Hepatocellular ,Waist ,Oncology and Carcinogenesis ,gluteofemoral obesity ,Article ,abdominal obesity ,03 medical and health sciences ,Rare Diseases ,Clinical Research ,Internal medicine ,medicine ,Humans ,Obesity ,Oncology & Carcinogenesis ,Aged ,Waist-Hip Ratio ,business.industry ,Prevention ,Carcinoma ,Hepatocellular ,medicine.disease ,Confidence interval ,Bile Duct Neoplasms ,Digestive Diseases ,business - Abstract
Obesity is known to be associated with primary liver cancer (PLC), but the separate effects of excess abdominal and gluteofemoral size are unclear. Thus, we examined the association between waist and hip circumference with risk of PLC overall and by histologic type-hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC). The Liver Cancer Pooling Project is a consortium of prospective cohort studies that include data from 1,167,244 individuals (PLC n = 2,208, HCC n = 1,154, ICC n = 335). Multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CI) were estimated using proportional hazards regression. Waist circumference, per 5 cm increase, was associated with an 11% increased PLC risk (HR = 1.11, 95%CI: 1.09-1.14), including when adjusted for hip circumference (HR = 1.12, 95%CI: 1.08-1.17) and also when restricted to individuals in a normal body mass index (BMI) range (18.5 to
- Published
- 2019
46. Use of permethrin and other pyrethroids and mortality in the Agricultural Health Study
- Author
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Srishti Shrestha, Christine G Parks, David M Umbach, Jonathan N Hofmann, Laura E Beane Freeman, Aaron Blair, and Dale P Sandler
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Insecticides ,Occupational Exposure ,Pyrethrins ,Public Health, Environmental and Occupational Health ,Humans ,Agriculture ,Pesticides ,Permethrin - Abstract
ObjectivesPyrethroid insecticides have been linked with multiple health outcomes. One study reported an association with increased all-cause and cardiovascular mortality. Given the widespread use of pyrethroids, these findings warrant confirmation. We explored associations of permethrin/pyrethroid use with overall and cause-specific mortality among 50 665 licensed pesticide applicators in the Agricultural Health Study.MethodsAt enrolment (1993–1997), participants self-reported information on permethrin/pyrethroid use. Information on causes of death came from linkage with death registries through 2016. We used Cox proportional hazards models to estimate HRs and 95% CIs with adjustment for potential confounders.ResultsOver an average 21 years of follow-up, 19.6% (9,955) of the cohort died. We found no clear evidence that ever-use of permethrin/pyrethroid was associated with elevated overall mortality or with mortality from most causes examined. There was suggestive evidence, based on a small number of deaths among those exposed, for elevated pyrethroid-associated mortality from some neurological, respiratory and genitourinary diseases in the overall sample and from lung cancer among never-smokers.ConclusionAlthough based on mortality, which is also affected by survival, rather than incidence, these findings are biologically plausible, and future investigations in other populations may be warranted.
- Published
- 2021
47. Drinking water sources and water quality in a prospective agricultural cohort
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Cherrel K. Manley, Maya Spaur, Jessica M. Madrigal, Jared A. Fisher, Rena R. Jones, Christine G. Parks, Jonathan N. Hofmann, Dale P. Sandler, Laura Beane Freeman, and Mary H. Ward
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Global and Planetary Change ,Epidemiology ,Health, Toxicology and Mutagenesis ,Public Health, Environmental and Occupational Health ,Original Research Article ,Pollution - Abstract
We describe drinking water sources and water quality for a large agricultural cohort. We used questionnaire data from the Agricultural Health Study (N = 89,655), a cohort of licensed pesticide applicators and their spouses in Iowa (IA) and North Carolina (NC), to ascertain drinking water source at enrollment (1993–1997). For users of public water supplies (PWS), we linked participants’ geocoded addresses to contaminant monitoring data [five haloacetic acids (HAA5), total trihalomethanes (TTHM), and nitrate-nitrogen (NO(3)-N)]. We estimated private well nitrate levels using random forest models accounting for well depth, soil characteristics, nitrogen inputs, and other predictors. We assigned drinking water source for 84% (N = 74,919) of participants. Among these, 69% of IA and 75% of NC participants used private wells; 27% in IA and 21% in NC used PWS. Median PWS nitrate concentrations (NO(3)-N) were higher in IA [0.9 mg/L, interquartile range (IQR): 0.4–3.1 mg/L] than NC (0.1 mg/L, IQR: 0.1–0.2 mg/L), while median HAA5 and TTHM concentrations were higher in NC (HAA5: 11.9 µg/L, IQR: 5.5–33.4 µg/L; TTHM: 37.7 µg/L, IQR: 10.7–54.7 µg/L) than IA (HAA5: 5.0 µg/L, IQR: 3.7–10.7 µg/L; TTHM: 13.0 µg/L, IQR: 4.2–32.4 µg/L). Private well nitrate concentrations in IA (1.5 mg/L, IQR: 0.8–4.9 mg/L) and NC (1.9 mg/L, IQR: 1.4–2.5 mg/L) were higher than PWS. More private wells in IA (12%) exceeded 10 mg/L NO(3)-N (regulatory limit for PWS) than NC (
- Published
- 2021
48. RF-289 Collecting real-time self-reported information on intermittent agricultural activities using smartphones
- Author
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Sarah J. Locke, Melissa C. Friesen, Jon Moon, Laura E. Beane Freeman, Pabitra R Josse, Heather Bowles, and Jonathan N. Hofmann
- Subjects
Multimedia ,Agriculture ,business.industry ,Computer science ,business ,computer.software_genre ,computer - Published
- 2021
49. O-94 Development of task-specific endotoxin concentrations for agricultural activities using meta-regression of published data
- Author
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Pabitra R Josse, Shuai Xie, Melissa C. Friesen, Sarah J. Locke, Susan Viet, Jean-François Sauvé, Laura E. Beane Freeman, Felicia Hung, and Jonathan N. Hofmann
- Subjects
Agriculture ,business.industry ,Statistics ,Meta-regression ,Psychology ,business ,Task (project management) - Published
- 2021
50. O-307 Permethrin use and circulating immunologic markers: a longitudinal investigation in the Biomarkers of Exposure and Effect in Agriculture study
- Author
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Christine G. Parks, Joseph J. Shearer, Michael C. R. Alavanja, Vicky C. Chang, Jonathan N. Hofmann, Dale P. Sandler, Laura E. Beane Freeman, Gabriela Andreotti, Ola Landgren, and Danping Liu
- Subjects
business.industry ,Immunology ,Medicine ,business ,Permethrin ,medicine.drug - Published
- 2021
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