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7. Concurrent Particulate Matter and Heat Exposure in Working and Non-Working Women in Rural Guatemala.

Author

Butler-Dawson, Jaime, Erlandson, Grant, Jaramillo, Diana, Calvimontes, Laura, Pilloni, Daniel, Seidel, James, Castro, Colton, Villarreal Hernandez, Karely, Krisher, Lyndsay, Brindley, Stephen, Dally, Miranda, Cruz, Alex, James, Katherine A., Newman, Lee S., Schaeffer, Joshua W., and Adgate, John L.

Subjects
*PARTICULATE matter, *RURAL women, *AGRICULTURAL laborers, *WOMEN employees, *ATMOSPHERIC temperature, *AIR pollution
Abstract

High temperatures and air pollution exposure are individually known risks to human health, with amplifying adverse health effects during periods of co-exposure. This study compared co-occurring individual-level exposures to particulate matter (PM5, aerodynamic diameter of ≤5 μm) and heat among women in residential and agricultural settings in Guatemala. We measured personal and ambient exposure to PM5, temperature, and humidity among 21 female sugarcane workers in the fields and on their off days. We measured similar exposures among a group of 30 community members not involved in sugarcane work. We collected 171 personal PM5 measurements across 18 sampling days. The median workday personal PM5 concentration was 271 µg/m3, which was 3.6-fold higher than ambient area levels in the fields. The median personal PM5 concentration was 95.8 µg/m3 for off-work days and 83.5 µg/m3 for community days. The average workday individual-level temperature and humidity were 39.4 °C and 82.4%, respectively, with significantly lower temperatures on off-work and community days. The women workers and community members were exposed to high levels of PM5 and heat in both occupational and residential settings. Research needs to consider individual-level exposures at both work and home to help tailor more effective comprehensive prevention efforts to reduce risks. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Intranasal administration of sugarcane ash causes chronic kidney disease in rats

Author

Roncal-Jimenez, Carlos A., primary, Rogers, Keegan L., additional, Stem, Arthur, additional, Wijkstrom, Julia, additional, Wernerson, Annika, additional, Fox, Jacob, additional, Garcia Trabanino, Ramon, additional, Brindley, Stephen, additional, Garcia, Gabriela, additional, Miyazaki, Makoto, additional, Miyazaki-Anzai, Shinobu, additional, Sasai, Fumihiko, additional, Urra, Manuel, additional, Cara-Fuentes, Gabriel, additional, Sánchez-Lozada, L. Gabriela, additional, Rodriguez-Iturbe, Bernardo, additional, Butler Dawson, Jaime, additional, Madero, Magdalena, additional, Brown, Jared M., additional, and Johnson, Richard J., additional

Published
2024
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13. A longitudinal assessment of heat exposure and biomarkers of kidney function on heat shock protein 70 and antibodies among agricultural workers

Author

Butler-Dawson, Jaime, primary, Johnson, Richard J., additional, Krisher, Lyndsay, additional, Jaramillo, Diana, additional, Cruz, Alex, additional, Pilloni, Daniel, additional, Brindley, Stephen, additional, Rodriguez-Iturbe, Bernardo, additional, Sanchez-Lozada, Laura Gabriela, additional, Dally, Miranda, additional, and Newman, Lee S., additional

Published
2024
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14. Climate Change and the Kidney

Author

Johnson, Richard J., Sánchez-Lozada, Laura G., Newman, Lee S., Lanaspa, Miguel A., Diaz, Henry F., Lemery, Jay, Rodriguez-Iturbe, Bernardo, Tolan, Dean R., Butler-Dawson, Jaime, Sato, Yuka, Garcia, Gabriela, Hernando, Ana Andres, and Roncal-Jimenez, Carlos A.

Published
2019

18. Silica Nanoparticles and Mesoamerican Nephropathy: A Case Series

Author

Rogers, Keegan L., Roncal-Jimenez, Carlos A., Leiva, Ricardo, Stem, Arthur, Wijkstrom, Julia, Serpas, Lissbeth, González-Quiroz, Marvin A., Sasai, Fumihiko, Wernerson, Annika, Schaeffer, Joshua, Fox, Jacob, Ray, Matthew, Bansal, Anip, Urra, Manuel, Butler-Dawson, Jaime, Lucia, Scott, Newman, Lee S., Glaser, Jason, Johnson, Richard J., and Brown, Jared M.

Published
2024
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21. Point-of-Care Testing in Chronic Kidney Disease of Non-Traditional Origin: Considerations for Clinical, Epidemiological, and Health Surveillance Research and Practice

Author

Dally, Miranda, primary, Amador, Juan José, additional, Butler-Dawson, Jaime, additional, Lopez-Pilarte, Damaris, additional, Gero, Alexandra, additional, Krisher, Lyndsay, additional, Cruz, Alex, additional, Pilloni, Daniel, additional, Kupferman, Joseph, additional, Friedman, David J., additional, Griffin, Benjamin R., additional, Newman, Lee S., additional, and Brooks, Daniel R., additional

Published
2023
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22. Challenges and opportunities in interventions for chronic kidney disease of unknown origin (CKDu): report from the International Society of Nephrology Consortium of Collaborators on CKDu

Author

Smyth, Brendan, primary, Glaser, Jason, additional, Butler-Dawson, Jaime, additional, Nanayakkara, Nishantha, additional, Wegman, David H., additional, Anand, Shuchi, additional, Levin, Adeera, additional, Caplin, Ben, additional, Correa Rotter, Ricardo, additional, Eckardt, Kai-Uwe, additional, Fire, Andrew, additional, Friedman, David, additional, Herath, Chulani, additional, Jha, Vivekanand, additional, Wijewickrama, Eranga, additional, Yang, Chih-Wei, additional, Bajpai, Divya, additional, Pippias, Maria, additional, Ulasi, Ifeoma, additional, and Nangaku, Masaomi, additional

Published
2023
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23. Environmental metal exposures and kidney function of Guatemalan sugarcane workers

Author

Butler-Dawson, Jaime, James, Katherine A., Krisher, Lyndsay, Jaramillo, Diana, Dally, Miranda, Neumann, Natalie, Pilloni, Daniel, Cruz, Alex, Asensio, Claudia, Johnson, Richard J., Adgate, John, and Newman, Lee S.

Abstract

Background: Exposure to environmental metals can cause nephrotoxicity. There is an international epidemic of chronic kidney disease of unknown cause (CKDu). Whether metal exposures contribute to kidney dysfunction in populations at risk for CKDu remains unresolved. Objective: Urinary metals (arsenic, cadmium, nickel, and uranium) were examined in 222 sugarcane cutters in Guatemala at three time points over 1 year. Methods: We explored the relationships between metal concentrations and markers of kidney function using multivariable linear mixed-effect models. Results: Arsenic, cadmium, and nickel were detected in the majority of the 340 urine samples and were generally within limits previously considered to be nonnephrotoxic. Nevertheless, higher urine cadmium was inversely associated with estimated glomerular filtration rate (eGFR) (β: −4.23, 95% confidence interval [CI]: −6.92, −1.54) and positively associated with neutrophil gelatinase-associated lipocalin (NGAL) (β: 2.92, 95% CI: 1.20, 4.64). Higher urine arsenic was also inversely associated with eGFR (β: −4.36, 95% CI: −7.07, −1.64). Significance: Our findings suggest that exposures to metals, including cadmium and arsenic, might contribute to kidney toxicity seen in workers at risk for CKDu. These findings are consistent with the potential for metal nephrotoxicity at lower than expected levels in the setting of manual work in a very hot environment.

Published
2024
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24. Urinary concentrations of metals before and after volcanic eruption: a natural experiment surrounding the eruption of Volcán de Fuego, 2018

Author

Neumann, Natalie R., primary, Butler-Dawson, Jaime, additional, Krisher, Lyndsay, additional, Jaramillo, Diana, additional, Pilloni, Daniel, additional, Waite, Greg, additional, Li, Yaqiang, additional, Wittels, Stephen B., additional, Schilling, Kathrin, additional, Newman, Lee S., additional, and James, Katherine A., additional

Published
2022
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25. Inhaled silica nanoparticles cause chronic kidney disease in rats

Author

Sasai, Fumihiko, primary, Rogers, Keegan L., additional, Orlicky, David J., additional, Stem, Arthur, additional, Schaeffer, Joshua, additional, Garcia, Gabriela, additional, Fox, Jacob, additional, Ray, Matthew S., additional, Butler-Dawson, Jaime, additional, Gonzalez-Quiroz, Marvin, additional, Leiva, Ricardo, additional, Taduri, Gangadhar, additional, Anutrakululchai, Sirirat, additional, Venugopal, Vidhya, additional, Madero, Magdalena, additional, Glaser, Jason, additional, Wijkstrom, Julia, additional, Wernerson, Annika, additional, Brown, Jared M., additional, Johnson, Richard J., additional, and Roncal-Jimenez, Carlos A., additional

Published
2022
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28. Latin American Agricultural Workers' Job Demands and Resources and the Association With Health Behaviors at Work and Overall Health

Author

Schwatka, Natalie V., Jaramillo, Diana, Dally, Miranda, Krisher, Lyndsay, Dexter, Lynn, Butler-Dawson, Jaime, Clancy, Rebecca, Fisher, Gwenith G., and Newman, Lee S.

Subjects
Farmers, Latin America, Health Behavior, Public Health, Environmental and Occupational Health, Humans, Workplace, Occupational Health
Abstract

In the present study, we describe the job demands and job resources (JD-R) experienced by agricultural workers in three Latin American countries and their relationship to proactive health behaviors at work and overall health. Following previous research on the JD-R model, we hypothesized that job demands (H1) would be negatively related to agricultural workers' self-reported overall health. On the other hand, we hypothesized that job resources (H2) would be positively related to agricultural workers' overall health. Furthermore, we hypothesized (H3) that workers' engagement in jobsite health promotion practices via their proactive health behaviors at work would partially mediate the relationship between workers' job resources and job demands and overall health. We also had a research question (R1) about whether there were differences by type of job held. The sample of workers who participated in this study (N = 1,861) worked in Mexico, Guatemala, and Nicaragua for one large agribusiness that produces sugar cane. They worked in two distinct areas: company administration and agricultural operations. We administered employee health and safety culture surveys using survey methods tailored to meet the needs of both types of workers. Stratified path analysis models were used to test study hypotheses. In general, we found support for hypotheses 1 and 2. For example, operations workers reported more physically demanding jobs and administrative workers reported more work-related stress. Regardless, the existence of high job demands was associated with poorer overall health amongst both types of workers. We found that workers in more health-supportive work environments perform more proactive health behaviors at work, regardless of their role within the organization. However, hypothesis 3 was not supported as proactive health behaviors at work was not associated with overall health. We discuss future research needs in terms of evaluating these hypotheses amongst workers employed by small- and medium-sized agribusinesses as well as those in the informal economy in Latin America. We also discuss important implications for agribusinesses seeking to develop health promotion programs that meet the needs of all workers.

Published
2021

35. International Total Worker Health: Applicability to Agribusiness in Latin America

Author

Jaramillo, Diana, primary, Krisher, Lyndsay, additional, Schwatka, Natalie V., additional, Tenney, Liliana, additional, Fisher, Gwenith G., additional, Clancy, Rebecca L., additional, Shore, Erin, additional, Asensio, Claudia, additional, Tetreau, Stephane, additional, Castrillo, Magda E., additional, Amenabar, Ines, additional, Cruz, Alex, additional, Pilloni, Daniel, additional, Zamora, Maria E., additional, Butler-Dawson, Jaime, additional, Dally, Miranda, additional, and Newman, Lee S., additional

Published
2021
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36. Environmental metal exposures and kidney function of Guatemalan sugarcane workers

Author

Butler-Dawson, Jaime, primary, James, Katherine A., additional, Krisher, Lyndsay, additional, Jaramillo, Diana, additional, Dally, Miranda, additional, Neumann, Natalie, additional, Pilloni, Daniel, additional, Cruz, Alex, additional, Asensio, Claudia, additional, Johnson, Richard J., additional, Adgate, John, additional, and Newman, Lee S., additional

Published
2021
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37. Inhaled silica nanoparticles cause chronic kidney disease in rats.

Author

Fumihiko Sasai, Rogers, Keegan L., Orlicky, David J., Stem, Arthur, Schaeffer, Joshua, Garcia, Gabriela, Fox, Jacob, Ray, Matthew S., Butler-Dawson, Jaime, Gonzalez-Quiroz, Marvin, Leiva, Ricardo, Taduri, Gangadhar, Anutrakululchai, Sirirat, Venugopal, Vidhya, Madero, Magdalena, Glaser, Jason, Wijkstrom, Julia, Wernerson, Annika, Brown, Jared M., and Johnson, Richard J.

Subjects
CHRONIC kidney failure, SILICA nanoparticles, RAT diseases, ETIOLOGY of diseases, SILICA
Abstract

Silica nanoparticles (SiNPs) released during the burning of sugarcane have been postulated to have a role in chronic kidney disease of unknown etiology. We tested the hypothesis that pristine SiNPs of the size present in sugarcane might cause chronic kidney injury when administered through the lung in rats. We administered 200- or 300-nm amorphous SiNPs twice weekly (4 mg/dose), or vehicle by oropharyngeal aspiration for 13 wk to rats followed by euthanasia after an additional 13 wk (26 wk total). Tissues were evaluated for the presence of SiNPs and evidence of histological injury. Both sizes of SiNPs caused kidney damage, with early tubular injury and inflammation (at week 13) that continued to inflammation and chronic fibrosis at week 26 despite discontinuation of the SiNP administration. Both sizes of SiNPs caused local inflammation in the lung and kidney and were detected in the serum and urine at week 13, and the 200-nm particles were also localized to the kidney with no evidence of retention of the 300-nm particles. At week 26, there was some clearance of the 200-nm silica from the kidneys, and urinary levels of SiNPs were reduced but still significant in both 200- and 300 nm-exposed rats. In conclusion, inhaled SiNPs cause chronic kidney injury that progresses despite stopping the SiNP administration. These findings support the hypothesis that human exposure to amorphous silica nanoparticles found in burned sugarcane fields could have a participatory role in chronic kidney disease of unknown etiology. [ABSTRACT FROM AUTHOR]

Published
2022
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40. A Pilot Study to Assess Inhalation Exposures among Sugarcane Workers in Guatemala: Implications for Chronic Kidney Disease of Unknown Origin

Author

Schaeffer, Joshua W., primary, Adgate, John L., additional, Reynolds, Stephen J., additional, Butler-Dawson, Jaime, additional, Krisher, Lyndsay, additional, Dally, Miranda, additional, Johnson, Richard J., additional, James, Katherine A., additional, Jaramillo, Diana, additional, and Newman, Lee S., additional

Published
2020
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43. Challenges and opportunities in interventions for chronic kidney disease of unknown origin (CKDu): report from the International Society of Nephrology Consortium of Collaborators on CKDu

Author

Caplin, Ben, Correa Rotter, Ricardo, Eckardt, Kai-Uwe, Fire, Andrew, Friedman, David, Herath, Chulani, Jha, Vivekanand, Wijewickrama, Eranga, Yang, Chih-Wei, Bajpai, Divya, Pippias, Maria, Ulasi, Ifeoma, Nangaku, Masaomi, Smyth, Brendan, Glaser, Jason, Butler-Dawson, Jaime, Nanayakkara, Nishantha, Wegman, David H., Anand, Shuchi, and Levin, Adeera

Published
2023
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44. Increase of core temperature affected the progression of kidney injury by repeated heat stress exposure

Author

Sato, Yuka, primary, Roncal-Jimenez, Carlos A., additional, Andres-Hernando, Ana, additional, Jensen, Thomas, additional, Tolan, Dean R., additional, Sanchez-Lozada, Laura G., additional, Newman, Lee S., additional, Butler-Dawson, Jaime, additional, Sorensen, Cecilia, additional, Glaser, Jason, additional, Miyazaki, Makoto, additional, Diaz, Henry F., additional, Ishimoto, Takuji, additional, Kosugi, Tomoki, additional, Maruyama, Shoichi, additional, Garcia, Gabriela E., additional, Lanaspa, Miguel A., additional, and Johnson, Richard J., additional

Published
2019
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48. Increase of core temperature affected the progression of kidney injury by repeated heat stress exposure.

Author

Yuka Sato, Roncal-Jimenez, Carlos A., Andres-Hernando, Ana, Jensen, Thomas, Tolan, Dean R., Sanchez-Lozada, Laura G., Newman, Lee S., Butler-Dawson, Jaime, Sorensen, Cecilia, Glaser, Jason, Makoto Miyazaki, Diaz, Henry F., Takuji Ishimoto, Tomoki Kosugi, Shoichi Maruyama, Garcia, Gabriela E., Lanaspa, Miguel A., and Johnson, Richard J.

Subjects
KIDNEY injuries, ANIMAL disease models, CHRONIC kidney failure, HEAT, HEAT stroke
Abstract

An epidemic of chronic kidney disease of unknown etiology (Mesoamerican nephropathy) has emerged in hot regions of Central America. We have demonstrated that dehydration associated with recurrent heat exposure causes chronic kidney disease in animal models. However, the independent influence of core body temperature on kidney injury has not been explored. In the present study, we tested the hypothesis that kidney injury could be accelerated by increasing body temperature independent of external temperature. Wild-type mice were exposed to heat (39.5°C, 30 min, 2 times daily) with or without the mitochondrial uncoupling agent 2,4-dinitrophenol (DNP) for 10 days. Core temperature, renal function, proteinuria, and renal histological and biochemical analyses were performed. Isolated mitochondria markers of oxidative stress were evaluated from kidney tissue. DNP increased body core temperature in response to heat by 1°C (42 vs. 41°C), which was transient. The mild increase in temperature correlated with worsening albuminuria (R=0.715, P < 001), renal tubular injury, and interstitial infiltration of monocytes/macrophages. Tubular injury was marked in the outer medulla. This was associated with a reduction in kidney tissue ATP levels (nonheated control: 16.71±1.33 nmol/mg and DNP + heat: 13.08±1.12 nmol/mg, P < 0.01), reduced mitochondria, and evidence for mitochondrial oxidative stress. The results of the present study suggest that kidney injury in heat stress is markedly worsened by increasing core temperature. This is consistent with the hypothesis that clinical and subclinical heat stroke may play a role in Mesoamerican nephropathy. [ABSTRACT FROM AUTHOR]

Published
2019
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