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Tan Y, Guo Z, Yao H, Liu H, Fu Y, Luo Y, He R, Liu Y, Li P, Nie L, Tan L, Jing C. Association of phthalate exposure with type 2 diabetes and the mediating effect of oxidative stress: A case-control and computational toxicology study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 274:116216. [PMID: 38503103 DOI: 10.1016/j.ecoenv.2024.116216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/04/2024] [Accepted: 03/12/2024] [Indexed: 03/21/2024]
Abstract
Phthalic acid esters (PAEs) are widely used as plasticizers and have been suggested to engender adverse effects on glucose metabolism. However, epidemiological data regarding the PAE mixture on type 2 diabetes (T2DM), as well as the mediating role of oxidative stress are scarce. This case-control study enrolled 206 T2DM cases and 206 matched controls in Guangdong Province, southern China. The concentrations of eleven phthalate metabolites (mPAEs) and the oxidative stress biomarker 8-hydroxy-2'-deoxyguanosine (8-OHdG) in urine were determined. Additionally, biomarkers of T2DM in paired serum were measured to assess glycemic status and levels of insulin resistance. Significantly positive associations were observed for mono-(2-ethylhexyl) phthalate (MEHP) and Mono(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) with T2DM (P < 0.001). Restricted cubic spline modeling revealed a non-linear dose-response relationship between MEHHP and T2DM (Pnon-linear = 0.001). The Bayesian kernel machine regression and quantile g-computation analyses demonstrated a significant positive joint effect of PAE exposure on T2DM risk, with MEHHP being the most significant contributor. The mediation analysis revealed marginal evidence that oxidative stress mediated the association between the mPAEs mixture and T2DM, while 8-OHdG respectively mediated 26.88 % and 12.24 % of MEHP and MEHHP on T2DM risk individually (Pmediation < 0.05). Di(2-ethylhexyl) phthalate (DEHP, the parent compound for MEHP and MEHHP) was used to further examine the potential molecular mechanisms by in silico analysis. Oxidative stress may be crucial in the link between DEHP and T2DM, particularly in the reactive oxygen species metabolic process and glucose import/metabolism. Molecular simulation docking experiments further demonstrated the core role of Peroxisome Proliferator Activated Receptor alpha (PPARα) among the DEHP-induced T2DM. These findings suggest that PAE exposure can alter oxidative stress via PPARα, thereby increasing T2DM risk.
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Affiliation(s)
- Yuxuan Tan
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou, Guangdong 510632, PR China; Guangzhou Center for Disease Control and Prevention, No.1 Qide Road, Guangzhou, Guangdong 510440, PR China
| | - Ziang Guo
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou, Guangdong 510632, PR China
| | - Huojie Yao
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou, Guangdong 510632, PR China
| | - Han Liu
- Department of Endocrine, The First Affiliated Hospital of Jinan University, No.613 Huangpu Ave West, Guangzhou, Guangdong 510630, PR China
| | - Yingyin Fu
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou, Guangdong 510632, PR China
| | - Yangxu Luo
- Guangzhou Center for Disease Control and Prevention, No.1 Qide Road, Guangzhou, Guangdong 510440, PR China
| | - Rong He
- Guangzhou Center for Disease Control and Prevention, No.1 Qide Road, Guangzhou, Guangdong 510440, PR China
| | - Yiwan Liu
- Department of Endocrine, The First Affiliated Hospital of Jinan University, No.613 Huangpu Ave West, Guangzhou, Guangdong 510630, PR China
| | - Pei Li
- Department of Endocrine, The First Affiliated Hospital of Jinan University, No.613 Huangpu Ave West, Guangzhou, Guangdong 510630, PR China
| | - Lihong Nie
- Department of Endocrine, The First Affiliated Hospital of Jinan University, No.613 Huangpu Ave West, Guangzhou, Guangdong 510630, PR China
| | - Lei Tan
- Guangzhou Center for Disease Control and Prevention, No.1 Qide Road, Guangzhou, Guangdong 510440, PR China.
| | - Chunxia Jing
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou, Guangdong 510632, PR China; Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China.
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Martínez-Pinna J, Sempere-Navarro R, Medina-Gali RM, Fuentes E, Quesada I, Sargis RM, Trasande L, Nadal A. Endocrine disruptors in plastics alter β-cell physiology and increase the risk of diabetes mellitus. Am J Physiol Endocrinol Metab 2023; 324:E488-E505. [PMID: 37134142 PMCID: PMC10228669 DOI: 10.1152/ajpendo.00068.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/05/2023]
Abstract
Plastic pollution breaks a planetary boundary threatening wildlife and humans through its physical and chemical effects. Of the latter, the release of endocrine disrupting chemicals (EDCs) has consequences on the prevalence of human diseases related to the endocrine system. Bisphenols (BPs) and phthalates are two groups of EDCs commonly found in plastics that migrate into the environment and make low-dose human exposure ubiquitous. Here we review epidemiological, animal, and cellular studies linking exposure to BPs and phthalates to altered glucose regulation, with emphasis on the role of pancreatic β-cells. Epidemiological studies indicate that exposure to BPs and phthalates is associated with diabetes mellitus. Studies in animal models indicate that treatment with doses within the range of human exposure decreases insulin sensitivity and glucose tolerance, induces dyslipidemia, and modifies functional β-cell mass and serum levels of insulin, leptin, and adiponectin. These studies reveal that disruption of β-cell physiology by EDCs plays a key role in impairing glucose homeostasis by altering the mechanisms used by β-cells to adapt to metabolic stress such as chronic nutrient excess. Studies at the cellular level demonstrate that BPs and phthalates modify the same biochemical pathways involved in adaptation to chronic excess fuel. These include changes in insulin biosynthesis and secretion, electrical activity, expression of key genes, and mitochondrial function. The data summarized here indicate that BPs and phthalates are important risk factors for diabetes mellitus and support a global effort to decrease plastic pollution and human exposure to EDCs.
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Affiliation(s)
- Juan Martínez-Pinna
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Elche, Spain
- Departamento de Fisiología, Genética y Microbiología, Universidad de Alicante, Alicante, Spain
| | - Roberto Sempere-Navarro
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Elche, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Regla M Medina-Gali
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Elche, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Esther Fuentes
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Elche, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Ivan Quesada
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Elche, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Robert M Sargis
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, United States
| | - Leonardo Trasande
- Department of Pediatrics, New York University Grossman School of Medicine, New York, New York, United States
- Department of Population Health, New York University Grossman School of Medicine, New York, New York, United States
- Wagner School of Public Service, New York University, New York, New York, United States
| | - Angel Nadal
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Elche, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
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Crouzet T, Grignard E, Brion F, Blanc EB, Podechard N, Langouet S, Alonso-Magdalena P, Hubert P, Kim MJ, Audouze K. ReadEDTest: A tool to assess the readiness of in vitro test methods under development for identifying endocrine disruptors. ENVIRONMENT INTERNATIONAL 2023; 174:107910. [PMID: 37028267 DOI: 10.1016/j.envint.2023.107910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/02/2023] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
Growing evidence shows that endocrine disruptors (EDs), known to affect the reproductive system, may also disturb other hormone-regulated functions leading to cancers, neurodevelopmental defects, metabolic and immune diseases. To reduce exposure to EDs and limit their health effects, development of screening and mechanism-based assays to identify EDs is encouraged. Nevertheless, the crucial validation step of test methods by regulatory bodies is a time- and resource-consuming process. One of the main raisons of this long duration process is that method developers, mainly researchers, are not fully aware of the regulatory needs to validate a test. We propose an online self-assessment questionnaire (SAQ) called ReadEDTest easy to be used by all researchers. The aim of ReadEDTest is to speed up the validation process by assessing readiness criteria of in vitro and fish embryo ED test methods under development. The SAQ is divided into 7 sections and 13 sub-sections containing essential information requested by the validating bodies. The readiness of the tests can be assessed by specific score limits for each sub-section. Results are displayed via a graphical representation to help identification of the sub-sections having sufficient or insufficient information. The relevance of the proposed innovative tool was supported using two test methods already validated by the OECD and four under development test methods.
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Affiliation(s)
- Thibault Crouzet
- Université Paris Cité, T3S, Inserm UMR S-1124, F-75006 Paris, France
| | | | - François Brion
- INERIS, Ecotoxicologie des substances et des milieux (ESMI), UMR I-02 SEBIO, Verneuil-en-Halatte, France
| | - Etienne B Blanc
- Université Paris Cité, T3S, Inserm UMR S-1124, F-75006 Paris, France
| | - Normand Podechard
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S 1085, 35043 Rennes, France
| | - Sophie Langouet
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail)-UMR_S 1085, 35043 Rennes, France
| | - Paloma Alonso-Magdalena
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández, Elche, Spain and Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | | | - Min Ji Kim
- Université Sorbonne Paris Nord, T3S, Inserm UMR S-1124, F-75006 Paris, France.
| | - Karine Audouze
- Université Paris Cité, T3S, Inserm UMR S-1124, F-75006 Paris, France.
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Szulak F, Etcheverry Boneo L, Becu-Villalobos D, Fernandez MO, Sorianello E. Benzophenones alter autophagy and ER stress gene expression in pancreatic beta cells in vitro. In Vitro Cell Dev Biol Anim 2022; 58:936-956. [PMID: 36484879 DOI: 10.1007/s11626-022-00739-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 11/15/2022] [Indexed: 12/13/2022]
Abstract
Benzophenones (BPs) are endocrine disruptors frequently used in sunscreens and food packaging as UV blockers. Our goal was to assess the effect of benzophenone 2 (BP2) and 3 (BP3) on gene expression related to autophagy process and ER stress response in pancreatic beta cells. To that end, the mouse pancreatic beta cell line MIN6B1 was treated with 10 µM BP2 or BP3 in the presence or absence of the autophagy-inhibitor chloroquine (CQ, 10 µM) or the autophagy-inducer rapamycin (RAPA, 50 nM) during 24 h. BP3 inhibited the expression of the autophagic gene Ulk1, and additional effects were uncovered when autophagy was modified by CQ and RAPA. BP3 counteracted CQ-induced Lamp2 expression but did not compensate CQ-induced Sqstm1/p62 gene transcription, neither BP2. Nevertheless, the BPs did not alter the autophagic flux. In relation to ER stress, BP3 inhibited unspliced and spliced Xbp1 mRNA levels in the presence or absence of CQ, totally counteracted CQ-induced Chop gene expression, and partially reverted CQ-induced Grp78/Bip mRNA levels, while BP2 also partially inhibited Grp78/Bip mRNA induction by CQ. In conclusion, BPs, principally BP3, affect cellular adaptive responses related to autophagy, lysosomal biogenesis, and ER stress in pancreatic beta cells, indicating that BP exposure could lead to beta cell dysfunction.
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Affiliation(s)
- Florencia Szulak
- Laboratorio de Regulación Hipofisaria, Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, Vuelta de Obligado 2490, 1428, Buenos Aires, Argentina
| | - Luz Etcheverry Boneo
- Laboratorio de Regulación Hipofisaria, Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, Vuelta de Obligado 2490, 1428, Buenos Aires, Argentina
| | - Damasia Becu-Villalobos
- Laboratorio de Regulación Hipofisaria, Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, Vuelta de Obligado 2490, 1428, Buenos Aires, Argentina
| | - Marina Olga Fernandez
- Laboratorio de Neuroendocrinología, Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, Vuelta de Obligado 2490, 1428, Buenos Aires, Argentina
| | - Eleonora Sorianello
- Laboratorio de Regulación Hipofisaria, Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, Vuelta de Obligado 2490, 1428, Buenos Aires, Argentina.
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