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Suthar H, Manea T, Pak D, Woodbury M, Eick SM, Cathey A, Watkins DJ, Strakovsky RS, Ryva BA, Pennathur S, Zeng L, Weller D, Park JS, Smith S, DeMicco E, Padula A, Fry RC, Mukherjee B, Aguiar A, Geiger SD, Ng S, Huerta-Montanez G, Vélez-Vega C, Rosario Z, Cordero JF, Zimmerman E, Woodruff TJ, Morello-Frosch R, Schantz SL, Meeker JD, Alshawabkeh AN, Aung MT. Cross-Sectional Associations between Prenatal Per- and Poly-Fluoroalkyl Substances and Bioactive Lipids in Three Environmental Influences on Child Health Outcomes (ECHO) Cohorts. Environ Sci Technol 2024. [PMID: 38691655 DOI: 10.1021/acs.est.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Prenatal per- and poly-fluoroalkyl substances (PFAS) exposure may influence gestational outcomes through bioactive lipids─metabolic and inflammation pathway indicators. We estimated associations between prenatal PFAS exposure and bioactive lipids, measuring 12 serum PFAS and 50 plasma bioactive lipids in 414 pregnant women (median 17.4 weeks' gestation) from three Environmental influences on Child Health Outcomes Program cohorts. Pairwise association estimates across cohorts were obtained through linear mixed models and meta-analysis, adjusting the former for false discovery rates. Associations between the PFAS mixture and bioactive lipids were estimated using quantile g-computation. Pairwise analyses revealed bioactive lipid levels associated with PFDeA, PFNA, PFOA, and PFUdA (p < 0.05) across three enzymatic pathways (cyclooxygenase, cytochrome p450, lipoxygenase) in at least one combined cohort analysis, and PFOA and PFUdA (q < 0.2) in one linear mixed model. The strongest signature revealed doubling in PFOA corresponding with PGD2 (cyclooxygenase pathway; +24.3%, 95% CI: 7.3-43.9%) in the combined cohort. Mixture analysis revealed nine positive associations across all pathways with the PFAS mixture, the strongest signature indicating a quartile increase in the PFAS mixture associated with PGD2 (+34%, 95% CI: 8-66%), primarily driven by PFOS. Bioactive lipids emerged as prenatal PFAS exposure biomarkers, deepening insights into PFAS' influence on pregnancy outcomes.
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Affiliation(s)
- Himal Suthar
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California 90032, United States
| | - Tomás Manea
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California 90032, United States
| | - Dominic Pak
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California 90032, United States
| | - Megan Woodbury
- Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Stephanie M Eick
- Gangarosa Department of Environmental Health, Emory University Rollins School of Public Health, Atlanta, Georgia 30322, United States
| | - Amber Cathey
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan 48109, United States
| | - Deborah J Watkins
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan 48109, United States
| | - Rita S Strakovsky
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Food Sciences and Human Nutrition, Michigan State University, East Lansing, Michigan 48824, United States
| | - Brad A Ryva
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan 48824, United States
- College of Osteopathic Medicine, Michigan State University, East Lansing, Michigan 48824, United States
| | - Subramaniam Pennathur
- Department of Internal Medicine-Nephrology, University of Michigan, Ann Arbor, Michigan 48824, United States
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Lixia Zeng
- Department of Internal Medicine-Nephrology, University of Michigan, Ann Arbor, Michigan 48824, United States
| | - David Weller
- NSF International, Ann Arbor, Michigan 48105, United States
| | - June-Soo Park
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, California 94710, United States
| | - Sabrina Smith
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, California 94710, United States
| | - Erin DeMicco
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, California 94143, United States
| | - Amy Padula
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, California 94143, United States
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, Gillings School of Global Public Health, Chapel Hill, North Carolina 27599, United States
| | - Bhramar Mukherjee
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan 48109, United States
| | - Andrea Aguiar
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Champaign, Illinois 61801, United States
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Champaign, Illinois 61802, United States
| | - Sarah Dee Geiger
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Champaign, Illinois 61802, United States
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, United States
| | - Shukhan Ng
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Champaign, Illinois 61802, United States
| | - Gredia Huerta-Montanez
- Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Carmen Vélez-Vega
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, Georgia 30606, United States
| | - Zaira Rosario
- University of Puerto Rico Graduate School of Public Health, San Juan, Puerto Rico 00935, United States
| | - Jose F Cordero
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, Georgia 30606, United States
| | - Emily Zimmerman
- Department of Communication Sciences and Disorders, Northeastern University, Boston, Massachusetts 02115, United States
| | - Tracey J Woodruff
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, California 94143, United States
| | - Rachel Morello-Frosch
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, California 94143, United States
- Department of Environmental Science, Policy and Management and School of Public Health, University of California, Berkeley, Berkeley, California 94720, United States
| | - Susan L Schantz
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Champaign, Illinois 61801, United States
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Champaign, Illinois 61802, United States
| | - John D Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan 48109, United States
| | - Akram N Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Max T Aung
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California 90032, United States
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Aris IM, Lin PID, Wu AJ, Dabelea D, Lester BM, Wright RJ, Karagas MR, Kerver JM, Dunlop AL, Joseph CL, Camargo CA, Ganiban JM, Schmidt RJ, Strakovsky RS, McEvoy CT, Hipwell AE, O'Shea TM, McCormack LA, Maldonado LE, Niu Z, Ferrara A, Zhu Y, Chehab RF, Kinsey EW, Bush NR, Nguyen RH, Carroll KN, Barrett ES, Lyall K, Sims-Taylor LM, Trasande L, Biagini JM, Breton CV, Patti MA, Coull B, Amutah-Onukagha N, Hacker MR, James-Todd T, Oken E. Birth outcomes in relation to neighborhood food access and individual food insecurity during pregnancy in the Environmental Influences on Child Health Outcomes (ECHO)-wide cohort study. Am J Clin Nutr 2024; 119:1216-1226. [PMID: 38431121 DOI: 10.1016/j.ajcnut.2024.02.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/21/2024] [Accepted: 02/26/2024] [Indexed: 03/05/2024] Open
Abstract
BACKGROUND Limited access to healthy foods, resulting from residence in neighborhoods with low-food access or from household food insecurity, is a public health concern. Contributions of these measures during pregnancy to birth outcomes remain understudied. OBJECTIVES We examined associations between neighborhood food access and individual food insecurity during pregnancy with birth outcomes. METHODS We used data from 53 cohorts participating in the nationwide Environmental Influences on Child Health Outcomes-Wide Cohort Study. Participant inclusion required a geocoded residential address or response to a food insecurity question during pregnancy and information on birth outcomes. Exposures include low-income-low-food-access (LILA, where the nearest supermarket is >0.5 miles for urban or >10 miles for rural areas) or low-income-low-vehicle-access (LILV, where few households have a vehicle and >0.5 miles from the nearest supermarket) neighborhoods and individual food insecurity. Mixed-effects models estimated associations with birth outcomes, adjusting for socioeconomic and pregnancy characteristics. RESULTS Among 22,206 pregnant participants (mean age 30.4 y) with neighborhood food access data, 24.1% resided in LILA neighborhoods and 13.6% in LILV neighborhoods. Of 1630 pregnant participants with individual-level food insecurity data (mean age 29.7 y), 8.0% experienced food insecurity. Residence in LILA (compared with non-LILA) neighborhoods was associated with lower birth weight [β -44.3 g; 95% confidence interval (CI): -62.9, -25.6], lower birth weight-for-gestational-age z-score (-0.09 SD units; -0.12, -0.05), higher odds of small-for-gestational-age [odds ratio (OR) 1.15; 95% CI: 1.00, 1.33], and lower odds of large-for-gestational-age (0.85; 95% CI: 0.77, 0.94). Similar findings were observed for residence in LILV neighborhoods. No associations of individual food insecurity with birth outcomes were observed. CONCLUSIONS Residence in LILA or LILV neighborhoods during pregnancy is associated with adverse birth outcomes. These findings highlight the need for future studies examining whether investing in neighborhood resources to improve food access during pregnancy would promote equitable birth outcomes.
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Affiliation(s)
- Izzuddin M Aris
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, United States.
| | - Pi-I D Lin
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, United States
| | - Allison J Wu
- Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Dana Dabelea
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, United States; Lifecourse Epidemiology of Adiposity and Diabetes (LEAD) Center, University of Colorado Anschutz Medical Campus, Aurora, CO, United States; Department of Pediatrics, Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Barry M Lester
- Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Rosalind J Wright
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Margaret R Karagas
- Department of Epidemiology, Dartmouth Geisel School of Medicine, Hanover, NH, United States
| | - Jean M Kerver
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, United States
| | - Anne L Dunlop
- Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Christine Lm Joseph
- Department of Public Health Sciences, Henry Ford Health System, Detroit, MI, United States
| | - Carlos A Camargo
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States; Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jody M Ganiban
- Department of Psychological and Brain Sciences, George Washington University, Washington, DC, United States
| | - Rebecca J Schmidt
- Department of Public Health Sciences, School of Medicine, University of California Davis, Davis, CA, United States
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Cindy T McEvoy
- Department of Pediatrics, Oregon Health & Science University, Portland, OR, United States
| | - Alison E Hipwell
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, United States
| | - Thomas Michael O'Shea
- Department of Pediatrics, University of North Carolina, Chapel Hill, NC, United States
| | - Lacey A McCormack
- Avera Research Institute, Sioux Falls, SD, United States; Department of Pediatrics, University of South Dakota School of Medicine, Sioux Falls, SD, United States
| | - Luis E Maldonado
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Zhongzheng Niu
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Assiamira Ferrara
- Division of Research, Kaiser Permanente Northern California, Oakland, CA, United States
| | - Yeyi Zhu
- Division of Research, Kaiser Permanente Northern California, Oakland, CA, United States
| | - Rana F Chehab
- Division of Research, Kaiser Permanente Northern California, Oakland, CA, United States
| | - Eliza W Kinsey
- Department of Family Medicine & Community Health, Perelman School of Medicine, University of Pennsylvania, PA, United States
| | - Nicole R Bush
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, United States; Department of Pediatrics, University of California, San Francisco, CA, United States
| | - Ruby Hn Nguyen
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, MN, United States
| | - Kecia N Carroll
- Division of General Pediatrics, Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Emily S Barrett
- Department of Biostatistics and Epidemiology, Rutgers School of Public Health, Piscataway, NJ, United States
| | - Kristen Lyall
- AJ Drexel Autism Institute, Drexel University, Philadelphia, PA, United States
| | - Lauren M Sims-Taylor
- Department of Preventive Medicine, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Leonardo Trasande
- Department of Pediatrics, New York University Grossman School of Medicine, New York, NY, United States
| | - Jocelyn M Biagini
- Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Carrie V Breton
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Marisa A Patti
- AJ Drexel Autism Institute, Drexel University, Philadelphia, PA, United States
| | - Brent Coull
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Ndidiamaka Amutah-Onukagha
- Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA, United States
| | - Michele R Hacker
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Tamarra James-Todd
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, United States; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, United States
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Pacyga DC, Papandonatos GD, Rosas L, Whalen J, Smith S, Park JS, Gardiner JC, Braun JM, Schantz SL, Strakovsky RS. Associations of per- and polyfluoroalkyl substances with maternal early second trimester sex-steroid hormones. Int J Hyg Environ Health 2024; 259:114380. [PMID: 38657330 DOI: 10.1016/j.ijheh.2024.114380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/30/2024] [Accepted: 04/09/2024] [Indexed: 04/26/2024]
Abstract
BACKGROUND/AIMS Pregnant women are exposed to persistent environmental contaminants, including per- and polyfluoroalkyl substances (PFAS) that disrupt thyroid function. However, it is unclear if PFAS alter maternal sex-steroid hormone levels, which support pregnancy health and fetal development. METHODS In Illinois women with relatively high socioeconomic status (n = 460), we quantified perfluorononanoic (PFNA), perfluorooctane sulfonic (PFOS), perfluorooctanoic (PFOA), methyl-perfluorooctane sulfonamide acetic acid, perfluorohexanesulphonic (PFHxS), perfluorodecanoic (PFDeA), and perfluoroundecanoic (PFUdA) acid concentrations in fasting serum samples at median 17 weeks gestation, along with plasma progesterone, testosterone, and estradiol. We evaluated covariate-adjusted associations of ln-transformed hormones with each ln-transformed PFAS individually using linear regression and with the PFAS mixture using quantile-based g-computation (QGComp). RESULTS Interquartile range (IQR) increases in PFOS were associated with higher progesterone (%Δ 3.0; 95%CI: -0.6, 6.6) and estradiol (%Δ: 8.1; 95%CI: 2.2, 14.4) levels. Additionally, PFHxS was positively associated with testosterone (%Δ: 10.2; 95%CI: 4.0, 16.7), whereas both PFDeA and PFUdA were inversely associated with testosterone (%Δ: -5.7; 95%CI: -10.3, -0.8, and %Δ: -4.1; 95%CI: -7.6, -0.4, respectively). The IQR-standardized PFAS mixture was not associated with progesterone (%Δ: 1.6; 95%CI: -5.8, 9.2), due equal partial positive (%Δ: 9.2; driven by PFOA) and negative (%Δ: -7.4; driven by PFOS) mixture associations. Similarly, the mixture was not associated with testosterone (%Δ: 5.3; 95%CI: -9.0, 20.1), due to similar partial positive (%Δ: 23.6; driven by PFHxS) and negative (%Δ: -17.4; driven by PFDeA) mixture associations. However, we observed a slightly stronger partial positive (%Δ: 25.6; driven by PFOS and PFUdA) than negative (%Δ: -16.3; driven by PFOA) association resulting in an overall non-significant positive trend between the mixture and estradiol (%Δ: 8.5; 95%CI: -3.7, 20.9). CONCLUSION PFAS mixture modeled using QGComp was not associated with maternal sex-steroid hormones due to potential opposing effects of certain PFAS. Additional prospective studies could corroborate these findings.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA; Department of Epidemiology, University of North Carolina, Chapel Hill, NC 27599, USA
| | | | - Libeth Rosas
- The Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Jason Whalen
- Michigan Diabetes Research Center Chemistry Laboratory, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sabrina Smith
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, CA 94710, USA
| | - June-Soo Park
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, CA 94710, USA; Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94158, USA
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, RI 02912, USA
| | - Susan L Schantz
- The Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, USA; Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61802, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA.
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Cinzori ME, Pacyga DC, Rosas L, Whalen J, Smith S, Park JS, Geiger SD, Gardiner JC, Braun JM, Schantz SL, Strakovsky RS. Associations of per- and polyfluoroalkyl substances with maternal metabolic and inflammatory biomarkers in early-to-mid-pregnancy. Environ Res 2024; 250:118434. [PMID: 38346483 DOI: 10.1016/j.envres.2024.118434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/02/2024] [Accepted: 02/04/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND Per- and polyfluoroalkyl substances (PFAS) can disrupt metabolism. Early-to-mid pregnancy is characterized by amplified metabolic processes and inflammation to support maternal adaptations and fetal growth. Thus, we cross-sectionally evaluated whether PFAS are individually and jointly associated with these processes in early-to-mid pregnancy. METHODS Pregnant Illinois women (n = 452) provided fasted blood samples at median 17 weeks gestation. We quantified serum perfluorononanoic (PFNA), perfluorooctane sulfonic (PFOS), perfluorooctanoic (PFOA), methyl-perfluorooctane sulfonamide acetic acid (Me-PFOSA-AcOH), perfluorohexanesulfonic (PFHxS), perfluorodecanoic (PFDeA), and perfluoroundecanoic (PFUdA) acid. Key outcomes were plasma glucose, insulin, C-peptide, insulin-like growth factor 1 (IGF-1), adiponectin, leptin, triglycerides, free fatty acids, total cholesterol, high-density lipoprotein (HDL) cholesterol, C-reactive protein, tumor necrosis factor alpha (TNF-α), monocyte chemoattractant protein-1 (MCP-1), and interleukin 6. We calculated homeostatic model assessment for insulin resistance (HOMA-IR), low-density lipoprotein (LDL) cholesterol, and very low-density lipoprotein (VLDL). We evaluated associations of PFAS with each metabolic/inflammatory biomarker individually using covariate-adjusted linear regression and jointly using quantile-based g-computation. RESULTS In linear regression, all PFAS (except Me-PFOSA-AcOH) were negatively associated with insulin, HOMA-IR, and leptin, whereas all PFAS were positively associated with HDL cholesterol. We also observed negative associations of some PFAS with TNF-α and MCP-1; positive associations with adiponectin and total cholesterol also emerged. Additionally, PFOS was positively, whereas Me-PFOSA-AcOH was negatively, associated with triglycerides and VLDL. Each 25% increase in the PFAS mixture was associated with -31.3% lower insulin (95%CI: -45.8, -12.9), -31.9% lower HOMA-IR (95%CI: -46.4, -13.4), and -9.4% lower leptin (95%CI: -17.3, -0.8), but 7.4% higher HDL cholesterol (95%CI: 4.6, 10.3). For most outcomes, the major contributors to the PFAS mixture often differed compared to single-PFAS analyses. IMPLICATIONS Individual and joint PFAS exposures were associated with markers of maternal metabolism and inflammation in pregnancy. Further investigation is needed to elucidate possible mechanisms and consequences of these findings.
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Affiliation(s)
- Maria E Cinzori
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, 48824, USA
| | - Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA
| | - Libeth Rosas
- The Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana-Champaign, IL, 61801, USA
| | - Jason Whalen
- Michigan Diabetes Research Center Chemistry Laboratory, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Sabrina Smith
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, CA, 94710, USA
| | - June-Soo Park
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, CA, 94710, USA; Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94158, USA
| | - Sarah D Geiger
- The Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana-Champaign, IL, 61801, USA; Department of Kinesiology and Community Health, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, 48824, USA
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, RI, 02912, USA
| | - Susan L Schantz
- The Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana-Champaign, IL, 61801, USA; Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61802, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA.
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5
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Ryva BA, Pacyga DC, Anderson KY, Calafat AM, Whalen J, Aung MT, Gardiner JC, Braun JM, Schantz SL, Strakovsky RS. Associations of urinary non-persistent endocrine disrupting chemical biomarkers with early-to-mid pregnancy plasma sex-steroid and thyroid hormones. Environ Int 2024; 183:108433. [PMID: 38219543 PMCID: PMC10858740 DOI: 10.1016/j.envint.2024.108433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/22/2023] [Accepted: 01/06/2024] [Indexed: 01/16/2024]
Abstract
BACKGROUND/OBJECTIVES Pregnant women are exposed to numerous endocrine disrupting chemicals (EDCs) that can affect hormonal pathways regulating pregnancy outcomes and fetal development. Thus, we evaluated overall and fetal sex-specific associations of phthalate/replacement, paraben, and phenol biomarkers with sex-steroid and thyroid hormones. METHODS Illinois women (n = 302) provided plasma for progesterone, estradiol, testosterone, free T4 (FT4), total T4 (TT4), and thyroid stimulating hormone (TSH) at median 17 weeks gestation. Women also provided up-to-five first-morning urine samples monthly across pregnancy (8-40 weeks), which we pooled to measure 19 phthalate/replacement metabolites (reflecting ten parent compounds), three parabens, and six phenols. We used linear regression to evaluate overall and fetal sex-specific associations of biomarkers with hormones, as well as weighted quantile sum and Bayesian kernel machine regression (BKMR) to assess cumulative associations, non-linearities, and chemical interactions. RESULTS In women of relatively high socioeconomic status, several EDC biomarkers were associated with select hormones, without cumulative or non-linear associations with progesterone, FT4, or TT4. The biomarker mixture was negatively associated with estradiol (only at higher biomarker concentrations using BKMR), testosterone, and TSH, where each 10% mixture increase was associated with -5.65% (95% CI: -9.79, -1.28) lower testosterone and -0.09 μIU/mL (95% CI: -0.20, 0.00) lower TSH. Associations with progesterone, testosterone, and FT4 did not differ by fetal sex. However, in women carrying females, we identified an inverted u-shaped relationship of the mixture with estradiol. Additionally, in women carrying females, each 10% increase in the mixture was associated with 1.50% (95% CI: -0.15, 3.18) higher TT4, whereas in women carrying males, the mixture was associated with -1.77% (95% CI: -4.08, 0.58) lower TT4 and -0.18 μIU/mL (95% CI: -0.33, -0.03) lower TSH. We also identified select chemical interactions. CONCLUSION Some biomarkers were associated with early-to-mid pregnancy hormones. There were some sex-specific and non-linear associations. Future studies could consider how these findings relate to pregnancy/birth outcomes.
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Affiliation(s)
- Brad A Ryva
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI 48824, United States; College of Osteopathic Medicine, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States
| | - Diana C Pacyga
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States; Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, United States
| | - Kaitlyn Y Anderson
- College of Osteopathic Medicine, Michigan State University, East Lansing, MI 48824, United States
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, United States
| | - Jason Whalen
- Michigan Diabetes Research Center Chemistry Laboratory, University of Michigan, Ann Arbor, MI 48109, United States
| | - Max T Aung
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90032, United States
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, United States
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, RI 02912, United States
| | - Susan L Schantz
- The Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, United States; Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61802, United States
| | - Rita S Strakovsky
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States; Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, United States.
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Suthar H, Manea T, Pak D, Woodbury M, Eick SM, Cathey A, Watkins DJ, Strakovsky RS, Ryva BA, Pennathur S, Zeng L, Weller D, Park JS, Smith S, DeMicco E, Padula A, Fry RC, Mukherjee B, Aguiar A, Dee Geiger S, Ng S, Huerta-Montanez G, Vélez-Vega C, Rosario Z, Cordero JF, Zimmerman E, Woodruff TJ, Morello-Frosch R, Schantz SL, Meeker JD, Alshawabkeh A, Aung MT. Cross-sectional associations between prenatal maternal per- and poly-fluoroalkyl substances and bioactive lipids in three Environmental influences on Child Health Outcomes (ECHO) cohorts. medRxiv 2023:2023.11.03.23297930. [PMID: 37961525 PMCID: PMC10635258 DOI: 10.1101/2023.11.03.23297930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Background Per- and poly-fluoroalkyl substances (PFAS) exposure can occur through ingestion of contaminated food and water, and inhalation of indoor air contaminated with these chemicals from consumer and industrial products. Prenatal PFAS exposures may confer risk for pregnancy-related outcomes such as hypertensive and metabolic disorders, preterm birth, and impaired fetal development through intermediate metabolic and inflammation pathways. Objective Estimate associations between maternal pregnancy PFAS exposure (individually and as a mixture) and bioactive lipids. Methods Our study included pregnant women in the Environmental influences on Child Health Outcomes Program: Chemicals in our Bodies cohort (CiOB, n=73), Illinois Kids Developmental Study (IKIDS, n=287), and the ECHO-PROTECT cohort (n=54). We measured twelve PFAS in serum and 50 plasma bioactive lipids (parent fatty acids and eicosanoids derived from cytochrome p450, lipoxygenase, and cyclooxygenase) during pregnancy (median 17 gestational weeks). Pairwise associations across cohorts were estimated using linear mixed models and meta-analysis. Associations between the PFAS mixture and individual bioactive lipids were estimated using quantile g-computation. Results PFDeA, PFOA, and PFUdA were associated (p<0.05) with changes in bioactive lipid levels in all three enzymatic pathways (cyclooxygenase [n=6 signatures]; cytochrome p450 [n=5 signatures]; lipoxygenase [n=7 signatures]) in at least one combined cohort analysis. The strongest signature indicated that a doubling in PFOA corresponded with a 24.3% increase (95% CI [7.3%, 43.9%]) in PGD2 (cyclooxygenase pathway) in the combined cohort. In the mixtures analysis, we observed nine positive signals across all pathways associated with the PFAS mixture. The strongest signature indicated that a quartile increase in the PFAS mixture was associated with a 34% increase in PGD2 (95% CI [8%, 66%]), with PFOS contributing most to the increase. Conclusions Bioactive lipids were revealed as biomarkers of PFAS exposure and could provide mechanistic insights into PFAS' influence on pregnancy outcomes, informing more precise risk estimation and prevention strategies.
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Affiliation(s)
- Himal Suthar
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA
| | - Tomás Manea
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA
| | - Dominic Pak
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA
| | - Megan Woodbury
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, USA
| | - Stephanie M. Eick
- Gangarosa Department of Environmental Health, Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - Amber Cathey
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Deborah J. Watkins
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Rita S. Strakovsky
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA
- Department of Food Sciences and Human Nutrition, Michigan State University, East Lansing, MI, USA
| | - Brad A. Ryva
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, USA
- College of Osteopathic Medicine, Michigan State University, East Lansing, MI, USA
| | - Subramaniam Pennathur
- Department of Internal Medicine-Nephrology, University of Michigan, Ann Arbor, MI, USA
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Lixia Zeng
- Department of Internal Medicine-Nephrology, University of Michigan, Ann Arbor, MI, USA
| | | | - June-Soo Park
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, CA, USA
| | - Sabrina Smith
- Environmental Chemistry Laboratory, Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, CA, USA
| | - Erin DeMicco
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, CA, USA
| | - Amy Padula
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, CA, USA
| | - Rebecca C. Fry
- Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, Gillings School of Global Public Health, Chapel Hill, NC, USA
| | - Bhramar Mukherjee
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Andrea Aguiar
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Illinois, USA
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, IL, USA
| | - Sarah Dee Geiger
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, IL, USA
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA
| | - Shukhan Ng
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, IL, USA
| | - Gredia Huerta-Montanez
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, USA
| | - Carmen Vélez-Vega
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, Georgia, USA
| | - Zaira Rosario
- University of Puerto Rico Graduate School of Public Health, San Juan, PR, USA
| | - Jose F. Cordero
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, Georgia, USA
| | - Emily Zimmerman
- Department of Communication Sciences and Disorders, Northeastern University, Boston, MA, USA
| | - Tracey J. Woodruff
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, CA, USA
| | - Rachel Morello-Frosch
- Program on Reproductive Health and the Environment, University of California, San Francisco, San Francisco, CA, USA
- Department of Environmental Science, Policy and Management and School of Public Health, University of California, Berkeley, Berkeley, CA, USA
| | - Susan L. Schantz
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Illinois, USA
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, IL, USA
| | - John D. Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Akram Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, USA
| | - Max T. Aung
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA, USA
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7
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Pacyga DC, Haggerty DK, Gennings C, Schantz SL, Strakovsky RS. Interrogating components of two diet quality indices in pregnancy using a supervised statistical mixtures approach. Am J Clin Nutr 2023:S0002-9165(23)62419-0. [PMID: 37201722 PMCID: PMC10375457 DOI: 10.1016/j.ajcnut.2023.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/14/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023] Open
Abstract
BACKGROUND The Healthy Eating Index (HEI)-2015 and Alternative Healthy Eating Index (AHEI)-2010 evaluate diet holistically in pregnancy. However, it remains unclear how individual index components interact to contribute to health. OBJECTIVE To evaluate associations of HEI-2015 and AHEI-2010 components with gestational length using traditional/novel statistical methods in a prospective cohort. METHODS Pregnant women completed three-month FFQ at median 13 weeks gestation to calculate HEI-2015 and AHEI-2010. Covariate-adjusted linear regression models evaluated associations of HEI-2015 and AHEI-2010 total scores and individual components (one at a time and simultaneously adjusted) with gestational length. Covariate-adjusted Weighted Quantile Sum Regression models evaluated 1) associations of HEI-2015 and AHEI-2010 components as mixtures with gestational length and 2) contributions of components to these associations. RESULTS Each 10-point increase in HEI-2015 and AHEI-2010 total score was associated with 0.11 (95% CI: -0.05, 0.27) and 0.14 (95% CI: 0.00, 0.28) week longer gestation, respectively. In individual or simultaneously-adjusted HEI-2015 models, higher intakes of seafood/plant proteins, total protein foods, greens/beans, and saturated fats, but lower intakes of added sugars and refined grains were associated with longer gestational length. For AHEI-2010, higher intake of nuts/legumes and lower intake of sugar-sweetened beverages (SSBs)/fruit juice were associated with longer gestational length. Jointly, 10% increases in HEI-2015 and AHEI-2010 mixtures were associated with 0.17 (95% CI: 0.001, 0.34) and 0.18 (95% CI: 0.05, 0.30) week longer gestational length, respectively. Seafood/plant protein, total protein foods, dairy, greens/beans, and added sugars were the largest contributors to HEI-2015 mixture. Nuts/legumes, SSBs/fruit juice, sodium, and DHA/EPA were the largest contributors to AHEI-2010 mixture. Associations were less precise but consistent in women with spontaneous labors. CONCLUSIONS Compared to traditional methods, associations of diet index mixtures with gestational length were more robust and identified unique contributors. Additional studies could consider interrogating these approaches using other indices and health outcomes.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Diana K Haggerty
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA
| | - Chris Gennings
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Susan L Schantz
- The Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61801, USA; The Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA.
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Pacyga DC, Gardiner JC, Flaws JA, Li Z, Calafat AM, Korrick SA, Schantz SL, Strakovsky RS. Corrigendum to "Maternal phthalate and phthalate alternative metabolites and urinary biomarkers of estrogens and testosterones across pregnancy" [Environ. Int. 155 (2021) 106676]. Environ Int 2023:107935. [PMID: 37088679 DOI: 10.1016/j.envint.2023.107935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Susan A Korrick
- Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Susan L Schantz
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61801, USA; Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA.
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Cinzori ME, Pacyga DC, Babayev E, Duncan FE, Li Z, Williams PL, Flaws JA, Strakovsky RS. Ovarian volume partially explains associations of phthalate biomarkers with anti-Müllerian hormone and estradiol in midlife women. Environ Int 2023; 172:107771. [PMID: 36724714 PMCID: PMC10012419 DOI: 10.1016/j.envint.2023.107771] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/23/2022] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND/OBJECTIVES Women are ubiquitously exposed to endocrine disruptors, including phthalates. Ovarian follicles undergoing folliculogenesis (indirectly measured by ovarian volume) produce anti-Müllerian hormone (AMH) and estradiol (E2). We evaluated associations of phthalates with ovarian volume to assess whether this explained prior positive associations of phthalates with AMH and E2. METHODS Women ages 45-54 years (n = 614) had transvaginal ultrasounds of right/left ovaries to calculate mean ovarian volume. Women provided up-to-four urine and blood samples for quantifying AMH (first serum sample), E2 (all serum samples), and nine phthalate metabolites (from pooled urine, representing six parent phthalates). Multivariable linear or logistic regression models (for individual phthalate biomarkers), as well as weighted quantile sum (WQS) regression (for mixture analyses) evaluated associations of phthalate biomarkers with ovarian volume. Using cross-sectional mediation analysis, we assessed whether associations of phthalates with ovarian volume partially explained those of phthalates with AMH or E2. RESULTS Most women were non-Hispanic White (68%) and pre-menopausal (67%) with higher urinary phthalate metabolite concentrations than U.S. women. In single-pollutant models, 10% increases in mono(3-carboxypropyl) phthalate (MCPP) and monobenzyl phthalate (MBzP) were associated with 0.44% (95% CI: -0.02%, 0.91%) and 0.62% (95% CI: 0.02%, 1.23%) larger ovarian volumes, respectively. As a cumulative mixture, 10% increases in the phthalate mixture were associated with 2.89% larger ovarian volume (95%CI: 0.27, 5.59) with MCPP (35%) and MBzP (41%) identified as major contributors. Higher ovarian volume due to a 10% increase in MBzP (indirect effect OR: 1.004; 95% CI: 1.00, 1.01) explained 16% of the positive association between MBzP and higher AMH, whereas higher ovarian volume due to a 10% increase in MCPP (indirect effect %Δ: 0.11; 95% CI: -0.01, 0.22) explained 23% of the positive association between MCPP and E2. CONCLUSION In this cross-sectional study, phthalates were associated with increased ovarian volume, with implications for midlife hormone production.
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Affiliation(s)
- Maria E Cinzori
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, United States
| | - Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States
| | - Elnur Babayev
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States
| | - Francesca E Duncan
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, United States
| | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana-Champaign, IL 61801, United States
| | - Paige L Williams
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61802, United States
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States.
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10
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Pacyga DC, Patti MA, Papandonatos GD, Haggerty DK, Calafat AM, Gardiner JC, Braun JM, Schantz SL, Strakovsky RS. Associations of individual and cumulative urinary phthalate and replacement biomarkers with gestational weight gain through late pregnancy. Sci Total Environ 2023; 855:158788. [PMID: 36116648 PMCID: PMC10088088 DOI: 10.1016/j.scitotenv.2022.158788] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 09/11/2022] [Accepted: 09/11/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND/AIMS Phthalates and their replacements are endocrine/metabolic disruptors that may impact gestational weight gain (GWG) - a pregnancy health indicator. We investigated overall and fetal sex-specific associations of individual and cumulative phthalate/replacement biomarkers with GWG. METHODS Illinois women (n = 299) self-reported their weight pre-pregnancy and at their final obstetric appointment before delivery (median 38 weeks). We calculated pre-pregnancy body mass index and gestational age-specific GWG z-scores (GWGz). We quantified 19 phthalate/replacement metabolites (representing 10 parent compounds) in pools of up-to-five first-morning urine samples, collected approximately monthly between 8 and 40 weeks gestation. We used linear regression, quantile-based g-computation (QGComp), and weighted quantile sum regression (WQSR) to evaluate associations of ten biomarkers (individual metabolites or parent molar-sums) individually or as mixtures (in interquartile range intervals) with GWGz. We evaluated associations in all women and stratified by fetal sex. RESULTS Individually, sums of metabolites of di(2-ethylhexyl) phthalate (ƩDEHP), di(isononyl) cyclohexane-1,2-dicarboxylate (ƩDiNCH), and di(2-ethylhexyl) terephthalate (ƩDEHTP) had consistent inverse associations with GWGz, and some associations were fetal sex-specific. When evaluating phthalates/replacements as a mixture, QGComp identified ƩDEHP, ƩDEHTP, and mono-(3-carboxypropyl) phthalate, along with sum of di(isononyl) phthalate metabolites (ƩDiNP) and monobenzyl phthalate as notable contributors to lower and higher GWGz, respectively, resulting in a marginal inverse joint association in all women (β: -0.29; 95% CI: -0.70, 0.12). In women carrying females, ƩDEHP contributed to the marginal inverse joint association (β: -0.54; 95% CI: -1.09, 0.03). However, there was no overall association in women carrying males (β: 0.00; 95% CI: -0.60, 0.59), which was explained by approximately equal negative (driven by ƩDEHTP) and positive (driven by ƩDiNP) partial associations. WQSR analyses consistently replicated these QGComp findings. CONCLUSIONS Biomarkers of phthalates/replacements were fetal sex-specifically associated with GWGz. Because ƩDEHTP contributed substantively to mixture associations, additional studies in pregnant women may be needed around this plasticizer replacement.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Marisa A Patti
- Department of Epidemiology, Brown University, Providence, RI 02912, USA
| | | | - Diana K Haggerty
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, RI 02912, USA
| | - Susan L Schantz
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61802, USA; Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA.
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11
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Babadi RS, Williams PL, Li Z, Smith RL, Strakovsky RS, Hauser R, Flaws JA, James-Todd T. Urinary phthalate metabolite concentrations and hot flash outcomes: Longitudinal associations in the Midlife Women's Health Study. Environ Res 2023; 216:114576. [PMID: 36252832 PMCID: PMC10445275 DOI: 10.1016/j.envres.2022.114576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/07/2022] [Accepted: 10/09/2022] [Indexed: 05/05/2023]
Abstract
Midlife in women is an understudied time for environmental chemical exposures and menopausal outcomes. Recent cross-sectional research links phthalates with hot flashes, but little is known regarding such associations over time. Our objective was to estimate longitudinal associations between repeated measures of urinary phthalate metabolite concentrations and hot flash outcomes in midlife women. Using data from the Midlife Women's Health Study (MWHS), a prospective longitudinal study, we fit generalized linear mixed-effects models (GLMMs) and Cox proportional hazards regression models to repeated measures over a 4-year period. Recruitment occurred in Baltimore and surrounding counties, Maryland, USA between 2006 and 2015. Participants were premenopausal/perimenopausal women (n = 744) aged 45-54 years, who were not pregnant, not taking menopausal symptom medication or oral contraceptives, did not have hysterectomy/oophorectomy, and irrespective of hot flash experience. Baseline mean (SD) age was 48.4 (2.45), and 65% were premenopausal. Main outcome measures included adjusted odds ratios (ORs) for 4 self-reported hot flash outcomes (ever experienced, past 30 days experience, weekly/daily, and moderate/severe), and hazard ratios (HRs) for incident hot flashes. We observed mostly increased odds of certain hot flash outcomes with higher concentrations of metabolites of di (2-ethylhexyl) phthalate (DEHP), monoisobutyl phthalate (MiBP), and a molar summary measure of plasticizer phthalate metabolites (DEHP metabolites, mono-(3-carboxypropyl) phthalate (MCPP), monobenzyl phthalate (MBzP)). Some associations between exposures and outcomes indicated decreased odds. In conclusion, phthalate metabolites were associated with certain hot flash outcomes in midlife women. Midlife may be a sensitive period for higher phthalate metabolite concentrations with respect to menopausal symptoms.
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Affiliation(s)
- Ryan S Babadi
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, USA
| | - Paige L Williams
- Departments of Biostatistics and Epidemiology, Harvard T.H. Chan School of Public Health, Boston, USA
| | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana, USA
| | - Rebecca L Smith
- Department of Pathobiology, Institute for Genomic Biology, and Carle Illinois College of Medicine, University of Illinois, Urbana, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition and Institute for Integrative Toxicology, Michigan State University, East Lansing, USA
| | - Russ Hauser
- Departments of Environmental Health and Epidemiology, Harvard T.H. Chan School of Public Health, Boston, USA
| | - Jodi A Flaws
- Department of Comparative Biosciences and Institute for Genomic Biology, University of Illinois, Urbana, USA
| | - Tamarra James-Todd
- Departments of Environmental Health and Epidemiology, Harvard T.H. Chan School of Public Health, Boston, USA.
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Ryva BA, Haggerty DK, Pacyga DC, James-Todd T, Li Z, Flaws JA, Strakovsky RS. Determinants of urinary phthalate biomarker concentrations in pre- and perimenopausal women with consideration of race. Environ Res 2022; 214:114056. [PMID: 35952743 DOI: 10.1016/j.envres.2022.114056] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/19/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND/OBJECTIVES Phthalates are endocrine disruptors in consumer plastics and personal care products. Our objectives were to identify determinants of phthalate biomarkers in women during the hormonally-sensitive midlife period, and to consider differences between non-Hispanic White and Black women. METHODS We used information from the Midlife Women's Health Study of pre- and peri-menopausal women from Baltimore, Maryland (enrolled 2006-2015). We collected sociodemographic/health information via baseline questionnaires or during clinic visits and measured nine phthalate metabolites in pools of 2-4 urines collected across one menstrual cycle. We calculated molar sums of metabolites to estimate exposure to di(2-ethylhexyl) phthalate (ΣDEHP), personal care product phthalates (ΣPCPs), and phthalates in plastics (ΣPlastics). Accounting for meaningful predictors from bivariable analyses, our multivariable linear regression models evaluated determinants of phthalate biomarkers in all women (n = 689), non-Hispanic White women only (n = 467), or non-Hispanic Black women only (n = 195). RESULTS In multivariable analyses of all women, those who were perimenopausal, widowed/divorced, non-Hispanic Black, with higher family income, with lower BMI, or who reported more frequent nausea had higher monoethyl phthalate (MEP) and ΣPCP. Non-Hispanic White women who were perimenopausal had lower mono-(3-carboxypropyl) phthalate (MCPP) and monobutyl phthalate (MBP), those who consume alcohol had higher mono-isobutyl phthalate (MiBP), and those with higher BMI had lower MEP and higher MCPP. Alternatively, widowed/divorced Black women had higher ΣDEHP, monobenzyl phthalate (MBzP), and ΣPlastics, whereas Black women with higher income had higher MEP and ΣPCP. Black women who described themselves as having "as much" physical activity as others or who reported a skin condition had lower MBzP and MCPP, respectively. CONCLUSION We identified important determinants of phthalate biomarkers in midlife women and observed some differences by race. Future studies could consider reasons for these differences when developing interventions to reduce phthalate disparities and related health effects.
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Affiliation(s)
- Brad A Ryva
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, 48824, USA; College of Osteopathic Medicine, Michigan State University, East Lansing, MI, 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA
| | - Diana K Haggerty
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA
| | - Diana C Pacyga
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA; Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA
| | - Tamarra James-Todd
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Jodi A Flaws
- The Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL, 61801, USA
| | - Rita S Strakovsky
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA; Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA.
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Pacyga DC, Talge NM, Gardiner JC, Calafat AM, Schantz SL, Strakovsky RS. Maternal diet quality moderates associations between parabens and birth outcomes. Environ Res 2022; 214:114078. [PMID: 35964672 PMCID: PMC10052883 DOI: 10.1016/j.envres.2022.114078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 08/01/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND/OBJECTIVE Maternal paraben exposure and diet quality are both independently associated with birth outcomes, but whether these interact is unknown. We assessed sex-specific associations of parabens with birth outcomes and differences by maternal diet quality. METHODS Illinois pregnant women (n = 458) provided five first-morning urines collected at 8-40 weeks gestation, which we pooled for quantification of ethylparaben, methylparaben, and propylparaben concentrations. We collected/measured gestational age at delivery, birth weight, body length, and head circumference within 24 h of birth, and calculated sex-specific birth weight-for-gestational-age z-scores and weight/length ratio. Women completed three-month food frequency questionnaires in early and mid-to-late pregnancy, which we used to calculate the Alternative Healthy Eating Index (AHEI)-2010. Linear regression models evaluated sex-specific associations of parabens with birth outcomes, and differences in associations by average pregnancy AHEI-2010. RESULTS In this predominately non-Hispanic white, college-educated sample, maternal urinary paraben concentrations were only modestly inversely associated with head circumference and gestational length. However, methylparaben and propylparaben were inversely associated with birth weight, birth weight z-scores, body length, and weight/length ratio in female, but not male newborns. For example, each 2-fold increase in methylparaben concentrations was associated with -46.61 g (95% CI: -74.70, -18.51) lower birth weight, -0.09 (95% CI: -0.15, -0.03) lower birth weight z-scores, -0.21 cm (95% CI: -0.34, -0.07) shorter body length, and -0.64 g/cm (95% CI: -1.10, -0.19) smaller weight/length ratio in females. These inverse associations were more prominent in females of mothers with poorer diets (AHEI-2010 < median), but attenuated in those with healthier diets (AHEI-2010 ≥ median). In newborn males of mothers with healthier diets, moderate inverse associations emerged for propylparaben with gestational length and head circumference. CONCLUSIONS Maternal diet may moderate associations of parabens with birth size in a sex-specific manner. Additional studies may consider understanding the inflammatory and metabolic mechanisms underlying these findings.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA
| | - Nicole M Talge
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, 48824, USA
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, 48824, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, 30341, USA
| | - Susan L Schantz
- The Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL, 61802, USA; The Beckman Institute, University of Illinois, Urbana-Champaign, IL, 61801, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA.
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14
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Pacyga DC, Chiang C, Li Z, Strakovsky RS, Ziv-Gal A. Parabens and Menopause-Related Health Outcomes in Midlife Women: A Pilot Study. J Womens Health (Larchmt) 2022; 31:1645-1654. [PMID: 35787012 PMCID: PMC10024061 DOI: 10.1089/jwh.2022.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: Parabens are antimicrobial agents prevalently found in daily-use products that can interfere with the endocrine and reproductive systems. In this study, we examined the cross-sectional associations of parabens with hot flashes, hormone concentrations, and ovarian volume in a subsample of 101 nonsmoking, non-Hispanic 45- to 54-year-old women from the Midlife Women's Health Study. Materials and Methods: Women self-reported their hot flash history and underwent a transvaginal ultrasound to measure ovarian volume. Participants provided blood for quantification of serum hormones (by enzyme-linked immunosorbent assay or radioimmunoassay) and urine samples for measurements of urinary paraben biomarker levels (by high-performance liquid chromatography negative-ion electrospray ionization-tandem mass spectrometry). Linear or logistic regression models evaluated associations of specific gravity-adjusted paraben biomarker concentrations with hot flashes, hormone concentrations, and ovarian volume. Results: We observed marginal associations of propylparaben, methylparaben, and ∑parabens biomarkers (molar sum of four parabens) with hot flashes and follicle-stimulating hormone (FSH) concentrations, and of these paraben biomarkers and ethylparaben with ovarian volume. For example, women tended to have 32% (95% confidence intervals [CI]: 0.9 to 1.81), 40% (95% CI: 1.0 to 1.95), and 40% (95% CI: 0.98 to 2.01) higher odds of having recent, monthly, and mild hot flashes, respectively, for every two-fold increase in ∑parabens. Similarly, women tended to have 14.54% (95% CI: -0.10 to 31.32) higher FSH concentrations, but 5.67% (95% CI: -12.54 to 1.75) reduced ovarian volume for every two-fold increase in ∑parabens Conclusions: Overall, our preliminary findings suggest that urinary paraben biomarkers may be associated with menopause-related outcomes in midlife women. Additional studies in larger and diverse populations are needed to expand on these findings.
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Affiliation(s)
- Diana C. Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA
| | - Catheryne Chiang
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Zhong Li
- Metabolomics Lab, Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Rita S. Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA
| | - Ayelet Ziv-Gal
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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15
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Cinzori ME, Strakovsky RS. Impacts of elevated maternal adiposity on offspring reproductive health: a perspective from epidemiologic studies. J Endocr Soc 2022; 7:bvac163. [PMID: 36438545 PMCID: PMC9683496 DOI: 10.1210/jendso/bvac163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Indexed: 11/07/2022] Open
Abstract
ABSTRACT
One in seven couples in developed countries suffers from infertility. Maternal overweight or obesity have detrimental and lasting impacts on offspring cardiometabolic health, and although substantially more data are needed, hormonal imbalances in utero resulting from excessive maternal adiposity could also disrupt reproductive programming and impact future reproductive health of offspring. Therefore, this mini-review evaluates the human epidemiologic evidence that maternal overweight/obesity could be associated with poor reproductive health outcomes in offspring. We searched PubMed for relevant studies using terms such as “maternal obesity” and “reproductive development”. While the human epidemiologic literature is limited, studies have thus far observed that maternal obesity is associated with disrupted external genital development and several other markers of reproductive health across the lifespan. Specifically, maternal obesity is associated with higher risks of hypospadias and cryptorchidism in males and disrupted anogenital distance in both males and females. Maternal obesity has also been linked to earlier age at menarche in daughters, and precocious puberty in both sons and daughters. Finally, daughters of women with overweight or obesity have higher risks of developing polycystic ovarian syndrome, which has implications for fertility. This body of research suggests that in utero exposure to maternal obesity could disrupt reproductive system development, but substantially more evidence is needed, as almost no human epidemiologic studies have evaluated the long-term consequences of maternal obesity for offspring fertility/fecundity.
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Affiliation(s)
- Maria E Cinzori
- Department of Food Science and Human Nutrition
- Institute for Integrative Toxicology
- Department of Epidemiology and Biostatistics, Michigan State University , East Lansing, MI 48824 , USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition
- Institute for Integrative Toxicology
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16
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Kloboves ME, Pacyga DC, Gardiner JC, Flaws JA, Schantz SL, Strakovsky RS. Associations of maternal anthropometrics with newborn anogenital distance and the 2:4 digit ratio. Hum Reprod 2022; 37:2154-2166. [PMID: 35802047 PMCID: PMC9801973 DOI: 10.1093/humrep/deac143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/30/2022] [Indexed: 01/07/2023] Open
Abstract
STUDY QUESTION Are maternal anthropometrics associated with anogenital distance (AGD) and 2:4 digit ratio (2:4D) in newborns? SUMMARY ANSWER Select maternal anthropometrics indicative of obesity or increased adiposity are associated with elongated AGD in daughters. WHAT IS KNOWN ALREADY Excessive maternal weight or adiposity before or in early pregnancy may impact child reproductive, and other hormonally mediated, development. AGD and 2:4D are proposed markers of in utero reproductive development. STUDY DESIGN, SIZE, DURATION This study includes 450 mother/newborn dyads participating in the Illinois Kids Development Study (I-KIDS), a prospective pregnancy cohort from Champaign-Urbana, IL, USA. Participants included in the current study enrolled between 2013 and 2018. PARTICIPANTS/MATERIALS, SETTING, METHODS Most mothers in this study were college-educated (82%) and non-Hispanic White (80%), and 55% were under- or normal weight before pregnancy. Pregnant women aged 18-40 years reported pre-pregnancy weight and height to calculate pre-pregnancy BMI. At 8-15 weeks gestation, we measured waist and hip circumference, and evaluated weight, % body fat, visceral fat level, % muscle and BMI using bioelectrical impedance analysis. Within 24 h of birth, we measured newborn 2nd and 4th left/right digits to calculate the 2:4D. In daughters, we measured AGDAF (anus to fourchette) and AGDAC (anus to clitoris). In sons, we measured AGDAS (anus to scrotum) and AGDAP (anus to base of the penis). MAIN RESULTS AND THE ROLE OF CHANCE Select maternal anthropometrics were positively associated with AGD in newborn daughters, but not sons. For example, AGDAC was 0.73 mm (95% CI: 0.15, 1.32) longer for every interquartile range (IQR) increase in pre-pregnancy BMI and 0.88 mm (95% CI: 0.18, 1.58) longer for every IQR increase in hip circumference, whereas AGDAF was 0.51 mm (95% CI: 0.03, 1.00) and 0.56 mm (95% CI: 0.03, 1.09) longer for every IQR increase in hip and waist circumference, respectively. Quartile analyses generally supported linear associations, but additional strong associations emerged in Q4 (versus Q1) of maternal % body fat and visceral fat levels with AGDAC. In quartile analyses, we observed only a few modest associations of maternal anthropometrics with 2:4D, which differed by hand (left versus right) and newborn sex. Although there is always the possibility of spurious findings, the associations for both measures of female AGD were consistent across multiple maternal anthropometric measures, which strengthens our conclusions. LIMITATIONS, REASONS FOR CAUTION Our study sample was racially and ethnically homogenous, educated and relatively healthy, so our study may not be generalizable to other populations. Additionally, we may not have been powered to identify some sex-specific associations, especially for 2:4D. WIDER IMPLICATIONS OF THE FINDINGS Increased maternal weight and adiposity before and in early pregnancy may lengthen the female AGD, which warrants further investigation. STUDY FUNDING/COMPETING INTEREST(S) This publication was made possible by the National Institute for Environmental Health Sciences (NIH/NIEHS) grants ES024795 and ES022848, the National Institute of Child Health and Human Development grant R03HD100775, the U.S. Environmental Protection Agency grant RD83543401 and National Institute of Health Office of the Director grant OD023272. Its contents are solely the responsibility of the grantee and do not necessarily represent the official views of the US EPA or NIH. Furthermore, the US EPA does not endorse the purchase of any commercial products or services mentioned in the publication. This project was also supported by the USDA National Institute of Food and Agriculture and Michigan AgBioResearch. The authors declare no competing interests. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Maria E Kloboves
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA,Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA
| | - Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA
| | - Jodi A Flaws
- Department of Comparative Biosciences, Urbana-Champaign, IL, USA
| | - Susan L Schantz
- Department of Comparative Biosciences, Urbana-Champaign, IL, USA,Beckman Institute, University of Illinois, Urbana-Champaign, IL, USA
| | - Rita S Strakovsky
- Correspondence address. Department of Food Science and Human Nutrition, 236C Trout Building, 469 Wilson Road, East Lansing, MI 48824, USA. E-mail:
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17
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Pacyga DC, Haggerty DK, Nicol M, Henning M, Calafat AM, Braun JM, Schantz SL, Strakovsky RS. Identification of profiles and determinants of maternal pregnancy urinary biomarkers of phthalates and replacements in the Illinois Kids Development Study. Environ Int 2022; 162:107150. [PMID: 35247685 PMCID: PMC8967784 DOI: 10.1016/j.envint.2022.107150] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 02/04/2022] [Accepted: 02/10/2022] [Indexed: 05/19/2023]
Abstract
BACKGROUND/OBJECTIVES Pregnant women are exposed to multiple phthalates and their replacements, which are endocrine disrupting chemicals associated with adverse maternal and child health outcomes. Identifying maternal characteristics associated with phthalate/replacement exposure during pregnancy is important. METHODS We evaluated 13 maternal sociodemographic and lifestyle factors, enrollment year, and conception season as determinants of exposure biomarkers of phthalates and their replacements in 482 pregnant women from the Illinois Kids Development Study (I-KIDS, enrolled 2013-2018). We quantified 19 phthalate/replacement metabolites in pools of five first-morning urines collected across pregnancy. K-means clustering identified women with distinct patterns of biomarker concentrations and principal component analysis (PCA) identified principal component (PC) profiles of biomarkers that exist together. We used multivariable regression models to evaluate associations of predictors with identified k-means clusters and PCs. RESULTS K-means clustering identified two clusters of women: 1) low phthalate/di(2-ethylhexyl) terephthalate (∑DEHTP) and 2) high phthalate/∑DEHTP biomarker concentrations. PCA identified four PCs with loadings heaviest for biomarkers of plasticizer phthalates [di-isononyl, di-isodecyl, di-n-octyl phthalates] (PC1), of other phthalates [dibenzyl, di-n-butyl, di-iso-butyl phthalates] (PC2), of phthalate replacements [∑DEHTP, di(isononyl) cyclohexane-1,2-dicarboxylate (∑DiNCH)] (PC3), and of monoethyl phthalate [MEP] (PC4). Overall, age, marital status, income, parity, pre-pregnancy BMI, caffeine intake, enrollment year, and conception season were independently associated with k-means cluster membership and at least one PC. Additionally, race/ethnicity, education, employment, pregnancy intention, smoking status, alcohol intake, and diet were associated with at least one PC. For instance, women who conceived in the spring, summer, and/or fall months had lower odds of high phthalate/∑DEHTP cluster membership and had lower plasticizer phthalate, phthalate replacement, and MEP PC scores. CONCLUSIONS Conception season, enrollment year, and several sociodemographic/lifestyle factors were predictive of phthalate/replacement biomarker profiles. Future studies should corroborate these findings, with a special focus on replacements to which pregnant women are becoming increasingly exposed.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA
| | - Diana K Haggerty
- Department of Food Science and Human Nutrition, East Lansing, MI 48824, USA
| | - Megan Nicol
- Department of Food Science and Human Nutrition, East Lansing, MI 48824, USA
| | - Melissa Henning
- Department of Food Science and Human Nutrition, East Lansing, MI 48824, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, RI 02912, USA
| | - Susan L Schantz
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61801, USA; The Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA.
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18
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Chiang C, Pacyga DC, Strakovsky RS, Smith RL, James-Todd T, Williams PL, Hauser R, Meling DD, Li Z, Flaws JA. Urinary phthalate metabolite concentrations and serum hormone levels in pre- and perimenopausal women from the Midlife Women's Health Study. Environ Int 2021; 156:106633. [PMID: 34004451 PMCID: PMC8380691 DOI: 10.1016/j.envint.2021.106633] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 05/09/2023]
Abstract
BACKGROUND Phthalate exposure is associated with altered reproductive function, but little is known about associations between phthalate and hormone levels in midlife women. METHODS This cross-sectional analysis includes 45-54-year-old pre- and perimenopausal women from Baltimore, MD and its surrounding counties enrolled in the Midlife Women's Health Study (n = 718). Serum and urine samples were collected from participants once a week for four consecutive weeks to span the menstrual cycle. Serum samples were assayed for estradiol, testosterone, progesterone, sex hormone binding globulin (SHBG), follicle-stimulating hormone (FSH), and anti-Müllerian hormone (AMH), and geometric means were calculated for each hormone across all four weeks. Urine samples were analyzed for nine phthalate metabolites from pools of one-to-four urine samples. Phthalate metabolite concentrations were specific gravity-adjusted and assessed as individual metabolites or as molar sums of metabolites from common parents (di(2-ethylhexyl) phthalate metabolites, ∑DEHP), exposure sources (plastic, ∑Plastics; personal care products, ∑PCP), biological activity (anti-androgenic, ∑AA), and sum of all metabolites (∑Phthalates). We used linear regression models to assess overall associations of phthalate metabolites with hormones, controlling for important demographic, lifestyle, and health factors. We also explored whether associations differed by menopause status, body mass index (BMI), and race/ethnicity. RESULTS Most participants were non-Hispanic white (67%) or black (29%), college-educated (65%), employed (80%), and had somewhat higher mean urinary phthalate metabolite concentrations than other U.S. women. Overall, the following positive associations were observed between phthalate metabolites and hormones: ∑DEHP (%Δ: 4.9; 95%CI: 0.5, 9.6), ∑Plastics (%Δ: 5.1; 95%CI: 0.3, 10.0), and ∑AA (%Δ: 7.8; 95%CI: 2.3, 13.6) with estradiol; MiBP (%Δ: 6.6; 95%CI: 1.5, 12.1) with testosterone; ∑DEHP (%Δ: 8.3; 95%CI: 1.5, 15.6), ∑Plastics (%Δ: 9.8; 95%CI: 2.4, 17.7), MEP (%Δ: 4.6; 95%CI: 0.1, 9.2), ∑PCP (%Δ: 6.0; 95%CI: 0.2, 12.2), ∑Phthalates (%Δ: 9.0; 95%CI: 2.1, 16.5), and ∑AA (%Δ: 12.9; 95%CI: 4.4, 22.1) with progesterone; and MBP (%Δ: 8.5; 95%CI: 1.2, 16.3) and ∑AA (%Δ: 9.0; 95%CI: 1.3, 17.4) with AMH. Associations of phthalate metabolites with hormones differed by menopause status (strongest in premenopausal women for estradiol, progesterone, and FSH), BMI (strongest in obese women for progesterone), and race/ethnicity (strongest in non-Hispanic white women for estradiol and AMH). CONCLUSIONS We found that phthalate metabolites were positively associated with several hormones in midlife women, and that some demographic and lifestyle characteristics modified these associations. Future longitudinal studies are needed to corroborate these findings in more diverse midlife populations.
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Affiliation(s)
- Catheryne Chiang
- Department of Comparative Biosciences, University of Illinois, Urbana, IL 61802, United States
| | - Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48823, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48823, United States; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48823, United States
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48823, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48823, United States
| | - Rebecca L Smith
- Institute for Genomic Biology, University of Illinois, Urbana, IL 61801, United States; Department of Pathobiology, University of Illinois, Urbana, IL 61802, United States
| | - Tamarra James-Todd
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States
| | - Paige L Williams
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States
| | - Russ Hauser
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States
| | - Daryl D Meling
- Department of Comparative Biosciences, University of Illinois, Urbana, IL 61802, United States
| | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana, IL 61801, United States
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois, Urbana, IL 61802, United States; Institute for Genomic Biology, University of Illinois, Urbana, IL 61801, United States.
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Haggerty DK, Upson K, Pacyga DC, Franko JE, Braun JM, Strakovsky RS. REPRODUCTIVE TOXICOLOGY: Pregnancy exposure to endocrine disrupting chemicals: implications for women's health. Reproduction 2021; 162:F169-F180. [PMID: 34486984 PMCID: PMC8511181 DOI: 10.1530/rep-21-0051] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 09/06/2021] [Indexed: 12/17/2022]
Abstract
Women are ubiquitously exposed to non-persistent endocrine disrupting chemicals (EDCs) from food contact materials and personal care products. Understanding the impacts of exposure to these chemicals on pregnancy and long-term health outcomes in women is a critical area of research that has been largely overlooked. This brief review focuses on the epidemiologic literature exploring associations of non-persistent EDCs - including phthalates, parabens, bisphenols, and triclosan - with maternal pregnancy outcomes and long-term health outcomes in women. We focus on the challenges of this research, particularly assessing non-persistent EDC exposures, aspects of study design, and statistical approaches. We conclude by reviewing the best practices for non-persistent EDC research with regards to pregnancy and women's health. Though limited, we found some evidence indicating that exposure to non-persistent EDCs is associated with pregnancy health. However, findings from these studies have been inconsistent and require corroboration. Recent studies have also proposed that non-persistent EDC exposures in pregnancy may adversely affect postnatal maternal health. To date, only a few studies have been conducted and have only focused on postpartum weight. More research is needed in this area to inform efforts to promote optimal health across the lifespan of women.
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Affiliation(s)
- Diana K. Haggerty
- Department of Food Science and Human Nutrition, State University, East Lansing, MI, 48824, United States
| | - Kristen Upson
- Department of Epidemiology and Biostatistics, College of Human Medicine, State University, East Lansing, MI, 48824, United States
| | - Diana C. Pacyga
- Department of Food Science and Human Nutrition, State University, East Lansing, MI, 48824, United States
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, United States
| | - J. Ebba Franko
- Department of Food Science and Human Nutrition, State University, East Lansing, MI, 48824, United States
| | - Joseph M. Braun
- Department of Epidemiology, Brown University School of Public Health, Box G-S121-2, Providence, Rhode Island 02903, United States
| | - Rita S. Strakovsky
- Department of Food Science and Human Nutrition, State University, East Lansing, MI, 48824, United States
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, United States
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Pacyga DC, Gardiner JC, Flaws JA, Li Z, Calafat AM, Korrick SA, Schantz SL, Strakovsky RS. Maternal phthalate and phthalate alternative metabolites and urinary biomarkers of estrogens and testosterones across pregnancy. Environ Int 2021; 155:106676. [PMID: 34116379 PMCID: PMC8292204 DOI: 10.1016/j.envint.2021.106676] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 05/02/2021] [Accepted: 05/26/2021] [Indexed: 05/06/2023]
Abstract
BACKGROUND/OBJECTIVES Pregnant women are ubiquitously exposed to phthalates from food packaging materials and personal care products. Phthalates alter estrogen and testosterone concentrations in experimental models, but their ability to impact these hormones in human pregnancy is not well characterized. METHODS We recruited women ages 18-40 into the Illinois Kids Development Study (I-KIDS) in early pregnancy. Participants provided up to 5 first-morning urine samples across pregnancy (8-40 weeks gestation) that we pooled for quantification of 19 phthalate or phthalate alternative metabolites. Either individual (ng/mL) or molar sums (nmol/mL) of metabolites were used as exposure biomarkers. We summed urinary concentrations (ng/mL) of eight major estrogen (SumEstrogens) and two major testosterone (SumTestosterones) metabolites measured at median 13, 28, and 34 weeks gestation. We also estimated the ratio of estrogens-to-androgens. Linear mixed-effects models assessed relationships of phthalates/alternatives as continuous measures or as concentration quartiles with SumEstrogens, SumTestosterones, and the Estrogen/Androgen ratio in 434 women. In our models, we controlled for age, race, education, parity, smoking in the first trimester, pre-pregnancy body mass index, diet quality, conception season, fetal sex, and gestational age at hormone assessment. We also explored whether gestational age at hormone assessment or fetal sex modified these associations. All biomarkers and outcomes were specific gravity-adjusted, and continuous exposures and outcomes were also natural log-transformed. RESULTS Most participants were non-Hispanic white (80.9%), college educated (82.2%), and had urinary phthalate/alternative metabolite concentrations similar to those of reproductive-aged U.S. women. Overall, select phthalate metabolites were positively associated with SumEstrogens and SumTestosterones, but negatively associated with the Estrogen/Androgen ratio. For example, SumEstrogens was 5.1% (95%CI: 1.8, 8.5) higher with every 2-fold increase in sum of di(2-ethylhexyl) phthalate metabolites, while SumTestosterones was 7.9% (95%CI: 1.0, 15.3) higher and Estrogen/Androgen ratio was -7.7% (95%CI: -13.6, -1.4) lower with every 2-fold increase in monoethyl phthalate. However, phthalate alternatives were only positively associated with SumEstrogens, which was 2.4% (95%CI: 0.4, 4.5) and 3.2% (95%CI: 0.7, 5.8) higher with every 2-fold increase in sum of di(isononyl) cyclohexane-1,2-dicarboxylate metabolites and sum of di(2-ethylhexyl) terephthalate metabolites, respectively. Gestational age- and fetal sex-specific associations were only consistently observed for associations of phthalates/alternatives with SumEstrogens, where associations were strongest in mid-to-late pregnancy in women carrying females. CONCLUSION Phthalates/alternatives may impact gestational hormones, with potential for gestational age- and fetal sex-specific associations. Whether maternal urinary estrogens and testosterones mediate associations of phthalates/alternatives with pregnancy and fetal outcomes merits further investigation.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Joseph C Gardiner
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA
| | - Susan A Korrick
- Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Susan L Schantz
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, IL 61801, USA; Beckman Institute, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, USA.
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Abstract
Recent studies implicate mitochondrial dysfunction in the development and progression of numerous chronic diseases, which may be partially due to modifications in mitochondrial DNA (mtDNA). There is also mounting evidence that epigenetic modifications to mtDNA may be an additional layer of regulation that controls mitochondrial biogenesis and function. Several environmental factors (eg, smoking, air pollution) have been associated with altered mtDNA methylation in a handful of mechanistic studies and in observational human studies. However, little is understood about other environmental contaminants that induce mtDNA epigenetic changes. Numerous environmental toxicants are classified as endocrine disrupting chemicals (EDCs). Beyond their actions on hormonal pathways, EDC exposure is associated with elevated oxidative stress, which may occur through or result in mitochondrial dysfunction. Although only a few studies have assessed the impacts of EDCs on mtDNA methylation, the current review provides reasons to consider mtDNA epigenetic disruption as a mechanism of action of EDCs and reviews potential limitations related to currently available evidence. First, there is sufficient evidence that EDCs (including bisphenols and phthalates) directly target mitochondrial function, and more direct evidence is needed to connect this to mtDNA methylation. Second, these and other EDCs are potent modulators of nuclear DNA epigenetics, including DNA methylation and histone modifications. Finally, EDCs have been shown to disrupt several modulators of mtDNA methylation, including DNA methyltransferases and the mitochondrial transcription factor A/nuclear respiratory factor 1 pathway. Taken together, these studies highlight the need for future research evaluating mtDNA epigenetic disruption by EDCs and to detail specific mechanisms responsible for such disruptions.
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Affiliation(s)
- Zheng Zhou
- Department of Animal Sciences, Michigan State University, East Lansing, Michigan 48824
| | - Jaclyn M Goodrich
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan 48109
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition.,Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan 48824
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Warner GR, Pacyga DC, Strakovsky RS, Smith R, James-Todd T, Williams PL, Hauser R, Meling DD, Li Z, Flaws JA. Urinary phthalate metabolite concentrations and hot flashes in women from an urban convenience sample of midlife women. Environ Res 2021; 197:110891. [PMID: 33722529 PMCID: PMC8187273 DOI: 10.1016/j.envres.2021.110891] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 05/21/2023]
Abstract
CONTEXT Phthalate exposure is associated with altered reproductive function, but little is known about associations of phthalate exposure with risk of hot flashes. OBJECTIVE To investigate associations of urinary phthalate metabolite levels with four hot flash outcomes in midlife women. DESIGN A cross-sectional study of the first year of a prospective cohort of midlife women, the Midlife Women's Health Study (2006-2015), a convenience sample from an urban setting. PARTICIPANTS 728 multi-racial/ethnic pre- and perimenopausal women aged 45-54 years. OUTCOME MEASURES Women completed questionnaires about hot flash experience and provided 1-4 urine samples over four consecutive weeks that were pooled for analysis. Phthalate metabolites were assessed individually and as molar sums representative of common compounds (all phthalates: ƩPhthalates; DEHP: ƩDEHP), exposure sources (plastics: ƩPlastic; personal care products: ƩPCP), and modes of action (anti-androgenic: ƩAA). Covariate-adjusted logistic regression models were used to assess associations of continuous natural log-transformed phthalate metabolite concentrations with hot flash outcomes. Analyses were conducted to explore whether associations differed by menopause status, body mass index (BMI), race/ethnicity, and depressive symptoms. RESULTS Overall, 45% of women reported a history of hot flashes. Compared to women who never experienced hot flashes, every two-fold increase in ƩPlastic was associated with 18% (OR: 1.18; 95%CI: 0.98, 1.43) and 38% (OR: 1.38; 95%CI: 1.11, 1.70) higher odds of experiencing hot flashes in the past 30 days and experiencing daily/weekly hot flashes, respectively. Some associations of phthalates with certain hot flash outcomes differed by menopause status, BMI, race/ethnicity, and depressive symptoms. CONCLUSIONS This study suggests that phthalates are associated with hot flash experience and may impact hot flash risk in women who are susceptible to experiencing hot flashes.
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Affiliation(s)
- Genoa R Warner
- Department of Comparative Biosciences, University of Illinois, Urbana, IL, 61802, USA
| | - Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48823, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48823, USA; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, 48823, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, 48823, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48823, USA
| | - Rebecca Smith
- Department of Pathobiology, University of Illinois, Urbana, IL, 61802, USA
| | - Tamarra James-Todd
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Paige L Williams
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA; Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Russ Hauser
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Daryl D Meling
- Department of Comparative Biosciences, University of Illinois, Urbana, IL, 61802, USA
| | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana, IL, 61801, USA
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois, Urbana, IL, 61802, USA; Institute for Genomic Biology, University of Illinois, Urbana, IL, 61802, USA.
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23
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Haggerty DK, Flaws JA, Li Z, Strakovsky RS. Phthalate exposures and one-year change in body mass index across the menopausal transition. Environ Res 2021; 194:110598. [PMID: 33307086 PMCID: PMC7946761 DOI: 10.1016/j.envres.2020.110598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND The menopausal transition is a hormonally sensitive period associated with changes in body weight. Phthalates are ubiquitous endocrine disrupting chemicals that could disrupt weight homeostasis, but it is unknown whether this occurs during the menopausal transition. OBJECTIVES Our objectives were to (1) determine if phthalate exposure in pre- and perimenopausal women was associated with one-year change in body mass index (BMI), and (2) determine if these associations differed across the menopausal transition. METHODS We addressed our objectives using data from 524 participants enrolled in the Midlife Women's Health Study. We calculated change in BMI from baseline to first follow-up visit approximately one year later. Phthalate exposures were approximated by measuring urinary metabolites in pools of two-to-four spot urine samples collected across a four-week period at baseline. We molar-converted and summed mono-(2-ethylhexyl) phthalate (mEHP), mono (2-ethyl-5-hydroxyhexyl) phthalate (mEHHP), mono (2-ethyl-5-oxohexyl) phthalate (mEOHP), and mono (2-ethyl-5-carboxypentyl) phthalate (mECPP) to approximate exposure to di-(2-ethylhexyl) phthalate (∑DEHP); ∑DEHP, mono (3-carboxypropyl) phthalate (mCPP), and monobenzyl phthalate (mBzP) to approximate exposure to plasticizer phthalates (∑Plastics); and monoethyl phthalate (mEP), monobutyl phthalate (mBP), and monoisobutyl phthalate (miBP) to approximate exposure to phthalates from personal care products (∑PCP). We used multivariable linear regression models to evaluate associations of specific gravity-adjusted ln-transformed phthalate metabolites or sums with one-year BMI change, and also considered whether associations differed depending on each woman's menopausal status change from baseline to first follow-up. RESULTS At baseline, most women were premenopausal (67.8%), non-Hispanic white (67.9%), and college educated (65.8%). Overall, urinary phthalate metabolites or sums were not associated with one-year BMI change. Stratified analysis identified positive associations between ∑DEHP (and three of its metabolites: MEHP, MEHHP, and MEOHP) and one-year BMI change among women who transitioned from peri-to post-menopause from baseline to first follow-up. For example, in these women, with each doubling of ∑DEHP, BMI increased by 0.65 kg/m2 (95%CI: 0.17, 1.13) from baseline to first follow-up. Personal care product-associated phthalate metabolites (mBP and mEP) were negatively associated with one-year BMI change among women who remained perimenopausal from baseline to first follow-up, while miBP and mEP were positively associated with one-year BMI change among women who transitioned from peri-to post-menopause. CONCLUSION We found the strongest associations between some phthalates and one-year BMI change in women who transitioned from peri-to post-menopause from baseline to first follow-up. This supports previous evidence that the menopausal transition is a hormonally sensitive period in women's lives. To establish whether phthalate exposure contributes to body weight changes associated with the menopausal transition, substantially more research is needed to corroborate our findings.
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Affiliation(s)
| | | | - Zhong Li
- Roy J. Carver Biotechnology Center, University of Illinois, Urbana-Champaign, IL, 61801, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, USA; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, 48824, USA.
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Haggerty DK, Strakovsky RS, Talge NM, Carignan CC, Glazier-Essalmi AN, Ingersoll BR, Karthikraj R, Kannan K, Paneth NS, Ruden DM. Prenatal phthalate exposures and autism spectrum disorder symptoms in low-risk children. Neurotoxicol Teratol 2021; 83:106947. [PMID: 33412243 PMCID: PMC7825926 DOI: 10.1016/j.ntt.2021.106947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 12/17/2020] [Accepted: 12/28/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Prenatal exposure to environmental chemicals has been associated with Autism Spectrum Disorder (ASD) symptoms in some, but not all, studies, but most research has not accounted for other childhood behavior problems. OBJECTIVES To evaluate the specific associations of prenatal phthalate exposures with ASD symptoms in children (ages 3-6) accounting for other behavior problems, and to assess sex differences in these associations. METHODS We measured phthalate metabolites in prenatal urine samples. Mothers completed the Social Responsiveness Scale-2nd edition (SRS-2) to assess child ASD symptoms and the Child Behavior Checklist (CBCL) to assess general behavior problems. We assessed associations of the sum of di-(2-ethylhexyl) phthalate metabolites, monobutyl phthalate, mono-isobutyl phthalate, and monoethyl phthalate (mEP) with ASD symptoms, adjusting for other behavior problems, using linear regression models (n=77). RESULTS Most associations were null, and the sample size limited power to detect associations, particularly in the stratified analyses. After adjusting for internalizing and externalizing problems from the CBCL, ASD symptoms increased for each doubling of prenatal mEP concentration among boys only. CONCLUSIONS Further investigation of maternal prenatal urinary phthalate metabolite concentrations and ASD symptoms while adjusting for other behavioral problems is warranted.
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Affiliation(s)
- Diana K Haggerty
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA
| | - Nicole M Talge
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Courtney C Carignan
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824, USA
| | | | - Brooke R Ingersoll
- Department of Psychology, Michigan State University, East Lansing, MI 48824, USA
| | | | - Kurunthachalam Kannan
- Department of Pediatrics, New York University School of Medicine, New York, NY 10016, USA
| | - Nigel S Paneth
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Douglas M Ruden
- Department of Ob/Gyn, Reproductive Endocrinology and Infertility, CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA; Institutes for Environmental Health Science, Wayne State University School of Medicine, Detroit, MI, USA.
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25
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Wierenga KA, Strakovsky RS, Benninghoff AD, Rajasinghe LD, Lock AL, Harkema JR, Pestka JJ. Requisite Omega-3 HUFA Biomarker Thresholds for Preventing Murine Lupus Flaring. Front Immunol 2020; 11:1796. [PMID: 32973753 PMCID: PMC7473030 DOI: 10.3389/fimmu.2020.01796] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/06/2020] [Indexed: 12/28/2022] Open
Abstract
Lupus is a systemic autoimmune disease typified by uncontrolled inflammation, disruption of immune tolerance, and intermittent flaring - events triggerable by environmental factors. Preclinical and clinical studies reveal that consumption of the marine ω-3 highly unsaturated fatty acids (HUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) might be used as a precision nutrition intervention to lessen lupus symptoms. The anti-inflammatory and pro-resolving effects of ω-3 HUFAs are inextricably linked to their presence in membrane phospholipids. The ω-3 HUFA score, calculated as [100 × (ω-3 HUFAs/(ω-3 HUFAs + ω-6 HUFAs))] in red blood cells (RBCs), and the Omega-3 Index (O3I), calculated as [100 × ((DHA+EPA)/total fatty acids)] in RBCs, are two biomarkers potentially amenable to relating tissue HUFA balance to clinical outcomes in individuals with lupus. Using data from three prior preclinical DHA supplementation studies, we tested the hypothesis that the ω-3 HUFA score and the O3I inversely correlate with indicators of autoimmune pathogenesis in the cSiO2-triggered lupus flaring model. The three studies employed both low and high fat rodent diets, as well as more complex diets emulating the U.S. dietary pattern. The ω-3 HUFA scores in RBCs were comparatively more robust than the O3I at predicting HUFA balances in the kidney, liver, spleen, and lung. Importantly, increases in both the ω-3 HUFA score (>40%) and the O3I (>10%) were strongly associated with suppression of cSiO2-triggered (1) expression of interferon-regulated genes, proinflammatory cytokine production, leukocyte infiltration, and ectopic lymphoid structure development in the lung, (2) pulmonary and systemic autoantibody production, and (3) glomerulonephritis. Collectively, these findings identify achievable ω-3 HUFA scores and O3I thresholds that could be targeted in future human intervention studies querying how ω-3 HUFA consumption influences lupus and other autoimmune diseases.
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MESH Headings
- Animal Feed
- Animals
- Autoimmunity
- Biomarkers/blood
- Bronchoalveolar Lavage Fluid/immunology
- Cytokines/metabolism
- Diet
- Disease Models, Animal
- Erythrocytes/metabolism
- Fatty Acids, Omega-3/administration & dosage
- Fatty Acids, Omega-3/blood
- Fatty Acids, Omega-6/administration & dosage
- Fatty Acids, Omega-6/blood
- Female
- Inflammation Mediators/metabolism
- Lupus Erythematosus, Systemic/blood
- Lupus Erythematosus, Systemic/diagnosis
- Lupus Erythematosus, Systemic/diet therapy
- Lupus Erythematosus, Systemic/immunology
- Mice, Inbred NZB
- Predictive Value of Tests
- Symptom Flare Up
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Affiliation(s)
- Kathryn A. Wierenga
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, United States
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Rita S. Strakovsky
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Abby D. Benninghoff
- Department of Animal, Dairy and Veterinary Sciences and USTAR Applied Nutrition Research, Utah State University, Logan, UT, United States
| | - Lichchavi D. Rajasinghe
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Adam L. Lock
- Department of Animal Science, Michigan State University, East Lansing, MI, United States
| | - Jack R. Harkema
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, United States
| | - James J. Pestka
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, United States
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26
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Hirko KA, Comstock SS, Strakovsky RS, Kerver JM. Diet during Pregnancy and Gestational Weight Gain in a Michigan Pregnancy Cohort. Curr Dev Nutr 2020; 4:nzaa121. [PMID: 32793851 PMCID: PMC7413979 DOI: 10.1093/cdn/nzaa121] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/17/2020] [Accepted: 07/09/2020] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Gestational weight gain (GWG) has important health implications for both the mother and offspring. Maternal diet during pregnancy may play an important role in achieving adequate GWG, although its precise role is unclear. OBJECTIVES Associations between maternal dietary components (fruits and vegetables, added sugar, percentage energy from fat, dairy) and GWG were examined in 327 pregnant women from the Archive for Research on Child Health cohort. METHODS Self-reported usual dietary intake was assessed with validated dietary screening tools at the first prenatal visit. GWG was obtained from the birth certificate and was categorized as inadequate, adequate, or excessive according to the Institute of Medicine recommendations. Associations between dietary components and GWG were assessed using multivariable regression models, stratified by maternal prepregnancy BMI category. RESULTS Only 31.5% of women had adequate GWG, with 24.8% gaining insufficient weight and 43.7% gaining excessively. Women who consumed more fruits and vegetables were suggestively less likely to have excessive GWG (OR: 0.86; 95% CI: 0.75, 1.00) in the minimally adjusted model, but the association became nonsignificant after adjusting for covariates (OR: 0.89; 95% CI: 0.77, 1.03). In stratified models, higher fruit and vegetable intake was linked to lower likelihood of excessive GWG among women with obesity (OR: 0.77; 95% CI: 0.60, 0.97), whereas higher added sugar intake was linked to a slight reduction in likelihood of excessive GWG (OR: 0.91; 95% CI: 0.84, 0.99) among women with a prepregnancy BMI in the normal range. Other dietary components were not significantly associated with GWG. CONCLUSIONS These results suggest that consuming fruits and vegetables during pregnancy may reduce risk of excessive GWG among women with obesity. With the rising prevalence of obesity among women of reproductive age, interventions to increase fruit and vegetable intake during pregnancy may have broad public health impact by improving maternal and child health outcomes.
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Affiliation(s)
- Kelly A Hirko
- Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University, East Lansing, MI, USA
| | - Sarah S Comstock
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA
| | - Jean M Kerver
- Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University, East Lansing, MI, USA
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Pacyga DC, Henning M, Chiang C, Smith RL, Flaws JA, Strakovsky RS. Associations of Pregnancy History with BMI and Weight Gain in 45-54-Year-Old Women. Curr Dev Nutr 2020; 4:nzz139. [PMID: 31893261 PMCID: PMC6933615 DOI: 10.1093/cdn/nzz139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/22/2019] [Accepted: 12/03/2019] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Midlife women have a higher risk of cardiometabolic disease than younger women, but the lifelong biological/lifestyle factors responsible for this increase are unclear. OBJECTIVES We investigated whether pregnancy history is a risk factor for midlife overweight/obesity and evaluated potential hormonal mechanisms. METHODS The Baltimore Midlife Women's Health Study, a prospective cohort, recruited 772 women aged 45-54 y. Women reported pregnancy characteristics via questionnaires, trained staff measured weight/height to calculate midlife BMI, and serum hormones were assessed by ELISA. Logistic regression models assessed associations of pregnancy history with risk of midlife overweight/obesity and BMI gain since age 18. We additionally explored whether associations differed by menopausal status, and whether midlife hormones mediated relationships of pregnancy history and midlife BMI. RESULTS These premenopausal or perimenopausal women were 66% Caucasian/White and 30% African American/Black, with a median of 2 live births (range: 0-11) and median age at first birth of 27 y (range: 12-46 y). Women with 0 and ≥2 live births had lower odds of overweight/obesity than those with 1 birth (OR = 0.47; 95% CI: 0.23, 0.96; P = 0.04, and OR = 0.58; 95% CI: 0.35, 0.95; P = 0.03, respectively). Women with ≥2 live births also had lower odds of BMI gain than those with 1 birth (OR = 0.66; 95% CI: 0.41, 1.06; P = 0.08). Furthermore, women who were older at their first birth had lower odds of overweight/obesity (OR = 0.96; 95% CI: 0.92, 1.00; P = 0.03) and BMI gain (OR = 0.97; 95% CI: 0.93, 1.00; P = 0.06). Number of pregnancies and age at last pregnancy were not associated with midlife overweight/obesity or BMI gain. Associations did not differ by menopausal status and were not explained by midlife hormones. CONCLUSIONS Earlier childbirth and having 1 child increased women's risk of midlife overweight/obesity and BMI gain since age 18. Additional studies should focus on women's childbearing years as a critical determinant of midlife metabolic health.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition
- Institute for Integrative Toxicology
- Department of Epidemiology and Biostatistics
| | - Melissa Henning
- Department of Food Science and Human Nutrition
- Lyman Briggs College, Michigan State University, East Lansing, MI, USA
| | | | - Rebecca L Smith
- Department of Pathobiology, University of Illinois, Urbana-Champaign, IL, USA
| | | | - Rita S Strakovsky
- Department of Food Science and Human Nutrition
- Institute for Integrative Toxicology
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28
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Strakovsky RS, Schantz SL. Using Experimental Models to Assess Effects of Bisphenol A (BPA) and Phthalates on the Placenta: Challenges and Perspectives. Toxicol Sci 2019; 166:250-268. [PMID: 30203063 DOI: 10.1093/toxsci/kfy224] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The placenta is critical for all aspects of fetal development. Bisphenol A (BPA) and phthalates are endocrine disruptors with ubiquitous exposure in pregnant women-their effects on the placenta is an area of growing research interest. Therefore, our objectives were to (1) summarize research related to the effects BPA or phthalates on placental outcomes in animal and cell models, and (2) evaluate the challenges for using such models to study the impacts of these chemicals on placental endpoints. Overall, studies in cells and animal models suggest that BPA and phthalates impact placental hormones, some epigenetic endpoints, increase inflammation and oxidative stress, and decrease cell viability and nutrient transfer. However, few animal or cell studies have assessed these outcomes at concentrations relevant to humans. Furthermore, it is unclear whether effects of BPA/phthalates on the placenta in animal models mediate fetal outcomes, as most studies have dosed after the earliest stages of placental and fetal development. It is also unclear whether effects of these chemicals are sex-specific, as few studies have considered placental sex. Finally, while there is substantial evidence for effects of mono-(2-ethylhexyl) phthalate (the major metabolite of di-(2-ethylhexyl) phthalate), on placental endpoints in cells, little is currently known about effects of other phthalates to which pregnant women are exposed. Moving forward, these limitations will need to be addressed to help us understand the precise mechanisms of action of these chemicals within the placenta, and how these reported perturbations impact fetal health.
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Affiliation(s)
- Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan 48823
| | - Susan L Schantz
- Beckman Institute for Advanced Science and Technology.,Department of Comparative Biosciences, University of Illinois Urbana-Champaign, 2347 Beckman Institute, Urbana, Illinois 61801
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Pacyga DC, Sathyanarayana S, Strakovsky RS. Dietary Predictors of Phthalate and Bisphenol Exposures in Pregnant Women. Adv Nutr 2019; 10:803-815. [PMID: 31144713 PMCID: PMC6743849 DOI: 10.1093/advances/nmz029] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 01/24/2019] [Accepted: 03/07/2019] [Indexed: 12/28/2022] Open
Abstract
Endocrine disrupting chemicals (EDCs) can disrupt fetal developmental processes during pregnancy, leading to long-term adverse outcomes in humans. A major source of exposure to EDCs, such as phthalates and bisphenols, is the food supply, primarily due to contamination from processing and packaging. Therefore, this review aimed to 1) review food-monitoring sources of phthalates and bisphenols, and 2) evaluate methodologies and provide future directions needed to establish EDC-limiting dietary recommendations in pregnancy. Using PubMed, 10 peer-reviewed studies were found on dietary predictors of EDC exposure in pregnancy, and all were selected for review. Use of plastic containers in pregnancy was associated with higher urinary phthalate metabolites, whereas canned food consumption was associated with higher urinary bisphenol A (BPA) concentrations. Foods and dietary patterns associated with healthier food choices (e.g., organic/grown/raised/caught foods, folic acid supplements, vegetarianism) were generally associated with lower urinary phthalate metabolite and BPA concentrations. Despite the many food-monitoring studies reporting high BPA and phthalate concentrations in various foods, the designs of most studies described here were not sufficiently robust to consistently detect associations of specific foods/food groups with phthalates and BPA. Given the limitations of currently available research, future studies should incorporate more valid questionnaires to accurately assess dietary EDC exposure, strive for concurrent diet and exposure assessment, and assess whether geographical and cultural differences modify associations of diet with gestational EDC exposures. Such progress will be critical for developing dietary recommendations that ensure the safety and health of pregnant women.
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Affiliation(s)
- Diana C Pacyga
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI
| | - Sheela Sathyanarayana
- Department of Pediatrics
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA
- Seattle Children's Research Institute, Seattle, WA
| | - Rita S Strakovsky
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI
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Strakovsky RS, Schantz SL. Impacts of bisphenol A (BPA) and phthalate exposures on epigenetic outcomes in the human placenta. Environ Epigenet 2018; 4:dvy022. [PMID: 30210810 PMCID: PMC6128378 DOI: 10.1093/eep/dvy022] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 05/18/2023]
Abstract
The placenta guides fetal growth and development. Bisphenol A (BPA) and phthalates are widespread environmental contaminants and endocrine disruptors, and the placental epigenetic response to these chemicals is an area of growing research interest. Therefore, our objective was to summarize research linking BPA or phthalate exposure to placental outcomes in human pregnancies, with a particular focus on epigenetic endpoints. In PubMed, studies were selected for review (without limiting start date and ending on 1 May 2018) if they reported any direct effects of BPA or phthalates on the placenta in humans. Collectively, available studies suggest that BPA and phthalate exposures are associated with changes to placental micro-RNA expression, DNA methylation, and genomic imprinting. Furthermore, several studies suggest that fetal sex may be an important modifier of placental outcomes in response to these chemicals. Studies in humans demonstrate associations of BPA and phthalate exposure with adverse placental outcomes. Moving forward, more studies should consider sex differences (termed "placental sex") in the measured outcomes, and should utilize appropriate statistical approaches to assess modification by fetal sex. Furthermore, more consistent sample collection and molecular outcome assessment paradigms will be indispensable for making progress in the field. These advances, together with improved non-invasive tools for measuring placental function and outcomes across pregnancy, will be critical for understanding the mechanisms driving placental epigenetic disruption in response to BPA and phthalates, and how these disruptions translate into placental and fetal health.
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Affiliation(s)
- Rita S Strakovsky
- The Department of Food Science and Human Nutrition, Michigan State University, 236C Trout Building, 469 Wilson Road, East Lansing, MI, USA
- Correspondence address. The Department of Food Science and Human Nutrition, Michigan State University, 236C Trout Building, 469 Wilson Road, East Lansing, MI 48823, USA. Tel: 517-353-3352; Fax: 517-353-8963; E-mail:
| | - Susan L Schantz
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, 405 N. Mathews Ave, Urbana, IL, USA
- Department of Comparative Biosciences, 2347 Beckman Institute, University of Illinois Urbana-Champaign, 405 N. Mathews Ave, Urbana, IL, USA
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Hernández-Saavedra D, Strakovsky RS, Ostrosky-Wegman P, Pan YX. Epigenetic Regulation of Centromere Chromatin Stability by Dietary and Environmental Factors. Adv Nutr 2017; 8:889-904. [PMID: 29141972 PMCID: PMC5683002 DOI: 10.3945/an.117.016402] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The centromere is a genomic locus required for the segregation of the chromosomes during cell division. This chromosomal region together with pericentromeres has been found to be susceptible to damage, and thus the perturbation of the centromere could lead to the development of aneuploidic events. Metabolic abnormalities that underlie the generation of cancer include inflammation, oxidative stress, cell cycle deregulation, and numerous others. The micronucleus assay, an early clinical marker of cancer, has been shown to provide a reliable measure of genotoxic damage that may signal cancer initiation. In the current review, we will discuss the events that lead to micronucleus formation and centromeric and pericentromeric chromatin instability, as well transcripts emanating from these regions, which were previously thought to be inactive. Studies were selected in PubMed if they reported the effects of nutritional status (macro- and micronutrients) or environmental toxicant exposure on micronucleus frequency or any other chromosomal abnormality in humans, animals, or cell models. Mounting evidence from epidemiologic, environmental, and nutritional studies provides a novel perspective on the origination of aneuploidic events. Although substantial evidence exists describing the role that nutritional status and environmental toxicants have on the generation of micronuclei and other nuclear aberrations, limited information is available to describe the importance of macro- and micronutrients on centromeric and pericentromeric chromatin stability. Moving forward, studies that specifically address the direct link between nutritional status, excess, or deficiency and the epigenetic regulation of the centromere will provide much needed insight into the nutritional and environmental regulation of this chromosomal region and the initiation of aneuploidy.
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Affiliation(s)
| | | | | | - Yuan-Xiang Pan
- Division of Nutritional Sciences,,Department of Food Science and Human Nutrition,,Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Champaign, IL; and
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Strakovsky RS, Lezmi S, Shkoda I, Flaws JA, Helferich WG, Pan YX. In utero growth restriction and catch-up adipogenesis after developmental di (2-ethylhexyl) phthalate exposure cause glucose intolerance in adult male rats following a high-fat dietary challenge. J Nutr Biochem 2015; 26:1208-20. [PMID: 26188368 PMCID: PMC4631689 DOI: 10.1016/j.jnutbio.2015.05.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 05/02/2015] [Accepted: 05/26/2015] [Indexed: 12/24/2022]
Abstract
Phthalates impact adipocyte morphology in vitro, but the sex-specific adipogenic signature immediately after perinatal di(2-ethylhexyl) phthalate (DEHP) exposure and adulthood physiology following a high-fat (HF) dietary challenge are unknown. In the current study, pregnant and lactating dams received DEHP (300 mg/kg body weight) or oil. At weaning [postnatal day (PND) 21], adipose tissue was sampled for real-time polymerase chain reaction. The remaining offspring consumed a control or HF diet. DEHP decreased % fat in males at birth from 13.9%±0.2 to 11.8%±0.6 (mean±S.E.M.), representing a 15.1% decrease in fat by DEHP, and these males caught up in adiposity to controls by PND21. Adult DEHP-exposed males had a 27.5% increase in fat (12.5%±0.9% in controls vs. 15.9%±1.5% in the DEHP group); adipocyte perimeter was increased as well, with fewer small/medium-sized adipocytes, and decreased cell number compared to oil controls. HF diet intake in DEHP-exposed males further increased male energy intake and body weight and led to glucose intolerance. In PND21 males, DEHP increased the expression of adipogenic markers (Pparg1, Cebpa, Adipoq, Ppard, Fabp4, Fasn, Igf1), decreased Lep, and decreased markers of mesenchymal stem cell commitment to the adipogenic lineage (Bmp2, Bmp4, Stat1, Stat5a) compared to oil controls. These data suggest that DEHP may decrease the adipocyte pool at birth, which initially increases adaptive adipocyte maturation and lipid accumulation, but leads to adipose tissue dysfunction in adulthood, decreasing the capacity to adapt to a HF diet, and leading to systemic glucose intolerance.
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Affiliation(s)
- Rita S Strakovsky
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Urbana, Illinois
| | - Stéphane Lezmi
- Department of Pathobiology, University of Illinois, Urbana-Champaign, Urbana, Illinois
| | - Ielyzaveta Shkoda
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Urbana, Illinois
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois, Urbana-Champaign, Urbana, Illinois
| | - William G Helferich
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Urbana, Illinois
| | - Yuan-Xiang Pan
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Urbana, Illinois; Division of Nutritional Sciences, University of Illinois, Urbana-Champaign, Urbana, Illinois.
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Strakovsky RS, Wang H, Engeseth NJ, Flaws JA, Helferich WG, Pan YX, Lezmi S. Developmental bisphenol A (BPA) exposure leads to sex-specific modification of hepatic gene expression and epigenome at birth that may exacerbate high-fat diet-induced hepatic steatosis. Toxicol Appl Pharmacol 2015; 284:101-12. [PMID: 25748669 DOI: 10.1016/j.taap.2015.02.021] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 02/18/2015] [Accepted: 02/23/2015] [Indexed: 12/25/2022]
Abstract
Developmental bisphenol A (BPA) exposure increases adulthood hepatic steatosis with reduced mitochondrial function. To investigate the potential epigenetic mechanisms behind developmental BPA-induced hepatic steatosis, pregnant Sprague-Dawley rats were dosed with vehicle (oil) or BPA (100μg/kg/day) from gestational day 6 until postnatal day (PND) 21. After weaning, offspring were either challenged with a high-fat (HF; 45% fat) or remained on a control (C) diet until PND110. From PND60 to 90, both BPA and HF diet increased the fat/lean ratio in males only, and the combination of BPA and HF diet appeared to cause the highest ratio. On PND110, Oil-HF, BPA-C, and BPA-HF males had higher hepatic lipid accumulation than Oil-C, with microvesicular steatosis being marked in the BPA-HF group. Furthermore, on PND1, BPA increased and modified hepatic triglyceride (TG) and free fatty acid (FFA) compositions in males only. In PND1 males, BPA increased hepatic expression of FFA uptake gene Fat/Cd36, and decreased the expression of TG synthesis- and β-oxidation-related genes (Dgat, Agpat6, Cebpα, Cebpβ, Pck1, Acox1, Cpt1a, Cybb). BPA altered DNA methylation and histone marks (H3Ac, H4Ac, H3Me2K4, H3Me3K36), and decreased the binding of several transcription factors (Pol II, C/EBPβ, SREBP1) within the male Cpt1a gene, the key β-oxidation enzyme. In PND1 females, BPA only increased the expression of genes involved in FFA uptake and TG synthesis (Lpl, Fasn, and Dgat). These data suggest that developmental BPA exposure alters and reprograms hepatic β-oxidation capacity in males, potentially through the epigenetic regulation of genes, and further alters the response to a HF diet.
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Affiliation(s)
- Rita S Strakovsky
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Huan Wang
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Nicki J Engeseth
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, USA
| | - William G Helferich
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA
| | - Yuan-Xiang Pan
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, USA.
| | - Stéphane Lezmi
- Department of Pathobiology, University of Illinois Urbana-Champaign, USA.
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Strakovsky RS, Lezmi S, Flaws JA, Schantz SL, Pan YX, Helferich WG. Genistein exposure during the early postnatal period favors the development of obesity in female, but not male rats. Toxicol Sci 2013; 138:161-74. [PMID: 24361872 DOI: 10.1093/toxsci/kft331] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Genistein (Gen), the primary isoflavone in soy, has been shown to adversely affect various endocrine-mediated endpoints in rodents and humans. Soy formula intake by human infants has been associated with early age at menarche and decreased female-typical behavior in girls. Adipose deposition and expansion are also hormonally regulated and Gen has been shown to alter these processes. However, little is known about the impact of early-life soy intake on metabolic homeostasis in adulthood. The current study examined the impact of early-life Gen exposure on adulthood body composition (by magnetic resonance imaging) and the molecular signals mediating adipose expansion. From postnatal day (PND) 1 to 22, rat pups were daily orally dosed with 50mg/kg Gen to mimic blood Gen levels in human infants fed soy formula. Female but not male Gen-exposed rats had increased fat/lean mass ratio, fat mass, adipocyte size and number, and decreased muscle fiber perimeter. PND22 Gen-exposed females, but not males, had increased expression of adipogenic factors, including CCAAT/enhancer binding protein alpha (Cebpα), CCAAT/enhancer binding protein beta (Cebpβ), and peroxisome proliferator-activated receptor gamma (Pparγ). Furthermore, Wingless-related MMTV integration site 10b (Wnt10b), a critical regulator of adipogenic cell fate determination, was hypermethylated and had decreased expression in adipose of PND22 Gen-exposed females. These data suggest that developmental Gen exposure in rats has gender-specific effects on adiposity that closely parallel the effects of a postweaning high-fat diet and underscore the importance of considering timing of exposure and gender when establishing safety recommendations for early-life dietary Gen intake.
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Strakovsky RS, Zhang X, Zhou D, Pan YX. The regulation of hepatic Pon1 by a maternal high-fat diet is gender specific and may occur through promoter histone modifications in neonatal rats. J Nutr Biochem 2013; 25:170-6. [PMID: 24445041 DOI: 10.1016/j.jnutbio.2013.09.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 08/25/2013] [Accepted: 09/26/2013] [Indexed: 12/18/2022]
Abstract
The antioxidant (AOX) defense system is critical for combating whole-body oxidative stress, and the present study aimed to determine the consequences of a maternal high-fat (HF) diet on neonatal hepatic lipid accumulation, oxidative stress, the expression of AOX genes, as well as epigenetic histone modifications within Pon1, an AOX enzyme. Hepatic thiobarbituric acid reactive substances were significantly increased and nonesterified fatty acids decreased in offspring of HF-fed dams, while triglycerides increased in male but not female HF offspring when compared to controls (C). Pon1, Pon2, Pon3 and Sod2 were significantly increased in offspring of HF-fed dams when compared to C. However, the increase in Pon1 and Pon3 was only significant in male but not female offspring. When compared to C, the hepatic Pon1 promoter of male and female HF offspring had significantly more acetylated histone H4 as well as dimethylated histone H3 at lysine residue 4, which are both involved in transcriptional activation. Trimethylation of histone H3 at lysine residue 9, which is involved in transcriptional repression, was only associated with genes in females. Results from the present study reveal that a maternal HF diet affects hepatic metabolism in the neonate in a gender-specific manner, and these differences, in association with epigenetic modification of histones, may contribute to the known gender differences in oxidative balance.
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Affiliation(s)
- Rita S Strakovsky
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Xiyuan Zhang
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Dan Zhou
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Yuan-Xiang Pan
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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Zhou D, Strakovsky RS, Zhang X, Pan YX. The skeletal muscle Wnt pathway may modulate insulin resistance and muscle development in a diet-induced obese rat model. Obesity (Silver Spring) 2012; 20:1577-84. [PMID: 22349736 DOI: 10.1038/oby.2012.42] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The Wnt signaling pathway is involved in lipid metabolism and obesity development. Skeletal muscle, a pivotal tissue for metabolism, is regulated by the Wnt signaling. However, little is known of this pathway's involvement in insulin sensitivity and myogenesis in animals. The current study focused on the potential role of Wnt signaling in insulin sensitivity and myogenic events and its further impact on intramuscular fat accumulation. Obesity resistant (OR) and obesity prone (OP) rats were fed a high-fat (HF, 45% kcal fat) diet for 13 weeks. Body weight and circulating triglyceride (TG) were measured and gastrocnemius muscle was collected for analysis of gene expression and protein amount. OP rats had higher body weight and blood TG than OR, and our study demonstrated that the skeletal muscle of OR and OP rats had different levels of β-catenin, which also corresponded to the expression of Wnt downstream genes. The expression of insulin receptor substrate (IRS) was significantly lower in OP than OR skeletal muscle, as was the protein amount of phosphorylated Akt, myocyte enhancer factor-2 (MEF2), and GLUT4. Expression of Myogenic regulatory factor (Myf) 5 and Myf3 (MyoD) were decreased significantly in OP skeletal muscle when compared to OR. Additionally, intramuscular fat was higher in OP than in OR rats. Thus, we propose that the differential Wnt signaling in the skeletal muscle of OR and OP rats is highly likely associated with the differences in insulin sensitivity and myogenic capability in these two strains.
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Affiliation(s)
- Dan Zhou
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL, USA
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Abstract
SIGNIFICANCE Maternal health and diet during gestation are critical for predicting fetal outcomes, both immediately at birth and in adulthood. While epigenetic modifications have previously been tightly linked to carcinogenesis, recent advances in the field have suggested that numerous adulthood diseases, including those characteristic of metabolic syndrome, could be programmed in utero in response to maternal exposures, and these "programmable" diseases are associated with epigenetic modifications of vital genes. RECENT ADVANCES While little is currently known about the epigenetic regulation of the antioxidant (AOX) defense system, several studies in animals show that AOX defense capacity may be programmed in utero, making it likely that the critical genes involved in this pathway are epigenetically regulated, either by DNA methylation or by the modification of histone tails. CRITICAL ISSUES This article presents the most current knowledge of the in utero regulation of the AOX defense capacity, and will specifically focus on the potential epigenetic regulation of this system in response to various in utero exposures or stimuli. The ability to appropriately respond to oxidative stress is critical for the health and survival of any organism, and the potential programming of this capacity may provide a link between the in utero environment and the tendency of certain individuals to be more susceptible toward disease stimuli in their postnatal environments. FUTURE DIRECTIONS We sincerely hope that future studies which result in a deeper understanding of the in utero programming of the epigenome will lead to novel and effective therapies for the treatment of epigenetically linked diseases.
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Affiliation(s)
- Rita S Strakovsky
- Division of Nutritional Sciences, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA
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Zhang Y, Strakovsky RS, Chen H, Pan YX. Decreased Phosphorylation of Histone H3 serine 10 by Genistein is Associated with the Transcriptional Upregulation of ATF3 in DLD‐1 Colon Cancer Cells. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.969.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yukun Zhang
- Department of Food Science & Human NutritionUniversity of Illinois at Urbana-ChampaignUrbanaIL
| | - Rita S. Strakovsky
- Department of Food Science & Human NutritionUniversity of Illinois at Urbana-ChampaignUrbanaIL
| | - Hong Chen
- Department of Food Science & Human NutritionUniversity of Illinois at Urbana-ChampaignUrbanaIL
| | - Yuan-Xiang Pan
- Department of Food Science & Human NutritionUniversity of Illinois at Urbana-ChampaignUrbanaIL
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Abstract
Placenta, as the sole transport mechanism between mother and fetus, links the maternal physical state and the immediate as well as lifelong outcomes of the offspring. The present study examined the consequences of maternal obesity on placental lipid accumulation and metabolism. Pregnant obesity-prone (OP) and obesity-resistant (OR) rat strains were fed a control diet throughout gestation. Placentas were collected on Gestational Day 21 for mRNA and oxidative stress analysis, and frozen placental sections were analyzed for fat accumulation as well as beta-catenin and Dickkopf homolog 1 (Xenopus laevis) (DKK1) localization. JEG3 trophoblast cells were cultured in vitro to determine the relationship between DKK1 and lipid accumulation. Maternal plasma and placental nonesterified fatty acids and triglycerides (TG) were elevated in OP dams. Placental Dkk1 mRNA content was 4-fold lower in OP placentas, and a significant increase was noted in beta-catenin accumulation as well as in mRNA content of fat transport and TG synthesis genes, including Ppard (peroxisome proliferator-activated receptor delta), Slc27a1 (fatty acid transport protein 1; also known as Fatp1), Cd36 (cluster of differentiation 36; also known as fatty acid translocation [Fat]), Lipin1, and Lipin3. Significant lipid accumulation was found within the decidual zones in OP, but not OR, placentas, and thickness of the decidual and junctional zones was significantly smaller in OP than in OR placentas. Overexpression of DKK1 in JEG3 cells decreased lipid accumulation and mRNA content of PPARD, SLC27A1, CD36, LIPIN1, and LIPIN3. Our results demonstrate that DKK1 is regulating certain aspects of placental lipid metabolism through the WNT signaling pathway.
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Affiliation(s)
- Rita S Strakovsky
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA
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Strakovsky RS, Zhang X, Zhou D, Pan YX. Gestational high fat diet programs hepatic phosphoenolpyruvate carboxykinase gene expression and histone modification in neonatal offspring rats. J Physiol 2011; 589:2707-17. [PMID: 21486814 DOI: 10.1113/jphysiol.2010.203950] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In insulin resistance and type II diabetes, there is an elevation of hepatic gluconeogenesis, which contributes to hyperglycaemia. Studies in experimental animals have provided evidence that consumption of high fat (HF) diets by female rats programs the progeny for glucose intolerance in adulthood, but the mechanisms behind the in utero programming remain poorly understood. The present study analysed the effect of a maternal HF diet on fetal gluconeogenic gene expression and potential regulation mechanism related to histone modifications. Dams were fed either a Control (C, 16% kcal fat) or a high-fat (HF, 45% kcal fat) diet throughout gestation. Livers of the offspring were collected on gestational day 21 and analysed to determine the consequences of a maternal HF diet on molecular markers of fetal liver gluconeogenesis. We demonstrated that offspring of HF-fed dams were significantly heavier and had significantly higher blood glucose levels at the time of delivery than offspring of dams fed the C diet. While maternal gluconeogenesis and plasma glucose were not affected by the HF diet, offspring of HF-fed dams had significantly higher mRNA contents of gluconeogenic genes in addition to the elevated plasma glucose. In addition to increased transcription rate, a gestational HF diet resulted in modifications of the Pck1 histone code in livers of offspring. Our results demonstrate that in utero exposure to HF diet has the potential to program the gluconeogenic capacity of offspring through epigenetic modifications, which could potentially lead to excessive glucose production and altered insulin sensitivity in adulthood.
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Affiliation(s)
- Rita S Strakovsky
- Department of Food Science and Human Nutrition, and Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 461 Bevier Hall, MC-182, 905 South Goodwin Avenue, Urbana, IL 61801, USA
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Strakovsky RS, Zhou D, Pan YX. A low-protein diet during gestation in rats activates the placental mammalian amino acid response pathway and programs the growth capacity of offspring. J Nutr 2010; 140:2116-20. [PMID: 20980649 DOI: 10.3945/jn.110.127803] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Placental efficiency is a predictor of fetal growth and development, which is also controlled by maternal gestational health and diet. The present study investigated the effects of a gestational low-protein diet on offspring growth capacity as well as the diet's contribution to altered expression of placental genes associated with the mammalian amino acid response (AAR) pathway. To assess these outcomes, timed-pregnant Sprague Dawley rats were fed a control (C) diet with 18% protein or a low-protein (LP) diet with 9% protein throughout gestation (Expt. 1) or throughout gestation and lactation (Expt. 2). Placentas were collected during natural delivery and quantitative RT-PCR and Western-blot analyses were performed to determine placental mRNA and protein levels. By the end of the lactation period, offspring of dams fed the LP diet had stunted growth in both experiments. mRNA expression of target genes in the AAR pathway, such as activating transcription factor-3 (Atf3), asparagine synthetase (Asns), and Sodium-dependent neutral amino acid transporter-2 (Snat2), was greater in placentas of rats fed the LP diet compared with controls, as were placental ATF4 and p-eIF2α protein levels. The increase in mRNA expression of AAR pathway-associated genes was correlated with the stunting of offspring growth (Atf3: R(2) = 0.32, P = 0.086; Asns: R(2) = 0.44, P < 0.05; Snat2: R(2) = 0.33, P = 0.084). Our study showed that the mammalian AAR pathway in placenta is upregulated by a maternal low-protein diet and this activation may act as a cue for the fetus to develop an adaptive response suited to their predicted postnatal environment, i.e. a more favorable phenotype for their survival.
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Affiliation(s)
- Rita S Strakovsky
- Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA
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