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Kim CE, Pereira A, Binder AM, Amarasiriwardena C, Shepherd JA, Corvalan C, Michels KB. Time-specific impact of trace metals on breast density of adolescent girls in Santiago, Chile. Int J Cancer 2024; 155:627-636. [PMID: 38567797 PMCID: PMC11186724 DOI: 10.1002/ijc.34930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/29/2024] [Accepted: 02/09/2024] [Indexed: 04/26/2024]
Abstract
Whether trace metals modify breast density, the strongest predictor for breast cancer, during critical developmental stages such as puberty remains understudied. Our study prospectively evaluated the association between trace metals at Tanner breast stage B1 (n = 291) and at stages both B1 and B4 (n = 253) and breast density at 2 years post-menarche among Chilean girls from the Growth and Obesity Cohort Study. Dual-energy x-ray absorptiometry assessed the volume of dense breast tissue (absolute fibroglandular volume [FGV]) and percent breast density (%FGV). Urine trace metals included arsenic, barium, cadmium, cobalt, cesium, copper, magnesium, manganese, molybdenum, nickel, lead, antimony, selenium, tin, thallium, vanadium, and zinc. At B1, a doubling of thallium concentration resulted in 13.69 cm3 increase in absolute FGV (β: 13.69, 95% confidence interval [CI]: 2.81, 24.52), while a doubling of lead concentration resulted in a 7.76 cm3 decrease in absolute FGV (β: -7.76, 95%CI: -14.71, -0.73). At B4, a doubling of barium concentration was associated with a 10.06 cm3 increase (β: 10.06, 95% CI: 1.44, 18.60), copper concentration with a 12.29 cm3 increase (β: 12.29, 95% CI: 2.78, 21.56), lead concentration with a 9.86 cm3 increase (β: 9.86, 95% CI: 0.73, 18.98), antimony concentration with a 12.97 cm3 increase (β: 12.97, 95% CI: 1.98, 23.79) and vanadium concentration with a 13.14 cm3 increase in absolute FGV (β: 13.14, 95% CI: 2.73, 23.58). Trace metals may affect pubertal breast density at varying developmental stages with implications for increased susceptibility for breast cancer.
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Affiliation(s)
- Claire E Kim
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, California, USA
| | - Ana Pereira
- Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
| | - Alexandra M Binder
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, California, USA
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA
| | - Chitra Amarasiriwardena
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - John A Shepherd
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, Honolulu, Hawaii, USA
| | - Camila Corvalan
- Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
| | - Karin B Michels
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, California, USA
- Institute for Prevention and Cancer Epidemiology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
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Essalmi S, Lotfi S, BaQais A, Saadi M, Arab M, Ait Ahsaine H. Design and application of metal organic frameworks for heavy metals adsorption in water: a review. RSC Adv 2024; 14:9365-9390. [PMID: 38510487 PMCID: PMC10951820 DOI: 10.1039/d3ra08815d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 03/07/2024] [Indexed: 03/22/2024] Open
Abstract
The growing apprehension surrounding heavy metal pollution in both environmental and industrial contexts has spurred extensive research into adsorption materials aimed at efficient remediation. Among these materials, Metal-Organic Frameworks (MOFs) have risen as versatile and promising contenders due to their adjustable properties, expansive surface areas, and sustainable characteristics, compared to traditional options like activated carbon and zeolites. This exhaustive review delves into the synthesis techniques, structural diversity, and adsorption capabilities of MOFs for the effective removal of heavy metals. The article explores the evolution of MOF design and fabrication methods, highlighting pivotal parameters influencing their adsorption performance, such as pore size, surface area, and the presence of functional groups. In this perspective review, a thorough analysis of various MOFs is presented, emphasizing the crucial role of ligands and metal nodes in adapting MOF properties for heavy metal removal. Moreover, the review delves into recent advancements in MOF-based composites and hybrid materials, shedding light on their heightened adsorption capacities, recyclability, and potential for regeneration. Challenges for optimization, regeneration efficiency and minimizing costs for large-scale applications are discussed.
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Affiliation(s)
- S Essalmi
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Sciences, MohammedV University in Rabat Morocco
- Université de Toulon, AMU, CNRS, IM2NP CS 60584 Toulon Cedex 9 France
| | - S Lotfi
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Sciences, MohammedV University in Rabat Morocco
| | - A BaQais
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University P. O. Box 84428 Riyadh 11671 Saudi Arabia
| | - M Saadi
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Sciences, MohammedV University in Rabat Morocco
| | - M Arab
- Université de Toulon, AMU, CNRS, IM2NP CS 60584 Toulon Cedex 9 France
| | - H Ait Ahsaine
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Sciences, MohammedV University in Rabat Morocco
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Boyi JO, Sonne C, Dietz R, Rigét F, Siebert U, Lehnert K. Gene expression and trace elements in Greenlandic ringed seals (Pusa hispida). ENVIRONMENTAL RESEARCH 2024; 244:117839. [PMID: 38081340 DOI: 10.1016/j.envres.2023.117839] [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: 10/13/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/19/2023]
Abstract
Marine top predators such as ringed seals biomagnify environmental contaminants; and with the increasing human activities in the Arctic, ringed seals are exposed to biologically significant concentrations of trace elements resulting in reproductive impairment, immunosuppression, and neurological damages. Little is known about the molecular effects of heavy metals on these vulnerable apex predators suffering from a rapidly changing Arctic with significant loss of sea-ice. In the present study, concentrations of cadmium (Cd), mercury (Hg) and selenium (Se) were measured in liver of sixteen Greenlandic ringed seals (nine adults and seven subadults) together with molecular biomarkers involved in bio-transformation, oxidative stress, endocrine disruption and immune activity in blood and blubber. The concentrations of trace elements increased in the following order: Hg > Se > Cd with levels of mercury and selenium being highest in adults. Aryl hydrocarbon receptor nuclear translocator (ARNT), peroxisome proliferator activated receptor alpha (PPARα, estrogen receptor alpha (ESR1), thyroid hormone receptor alpha (TRα) and interleukin - 2 (IL-2) mRNA transcript levels were highest in blubber, while heat shock protein 70 (HSP70) and interleukin - 10 (IL-10) were significantly higher in blood. There were no significant correlations between the concentrations of trace elements and mRNA transcript levels suggesting that stressors other than the trace elements investigated are responsible for the changes in gene expression levels. Since Hg seems to increase in Greenlandic ringed seals, there is a need to re-enforce health monitoring of this ringed seal population.
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Affiliation(s)
- Joy Ometere Boyi
- Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, Foundation, Büsum, Germany.
| | - Christian Sonne
- Department of Ecoscience, Aarhus University, Roskilde, Denmark.
| | - Rune Dietz
- Department of Ecoscience, Aarhus University, Roskilde, Denmark.
| | - Frank Rigét
- Department of Ecoscience, Aarhus University, Roskilde, Denmark.
| | - Ursula Siebert
- Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, Foundation, Büsum, Germany.
| | - Kristina Lehnert
- Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, Foundation, Büsum, Germany.
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Panigrahi AK, Pal PK, Sarkar Paria D. Melatonin as an Ameliorative Agent Against Cadmium- and Lead-Induced Toxicity in Fish: an Overview. Appl Biochem Biotechnol 2024:10.1007/s12010-023-04723-3. [PMID: 38224395 DOI: 10.1007/s12010-023-04723-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2023] [Indexed: 01/16/2024]
Abstract
Diverse anthropogenic activities and lack of knowledge on its consequences have promoted serious heavy metal contaminations in different aquatic systems throughout the globe. The non-biodegradable nature of most of these toxic heavy metals has increased the concern on their possible bioaccumulation in aquatic organisms as well as in other vertebrates. Among these aquatic species, fish are most sensitive to such contaminated water that not only decreases their chance of survivability in the nature but also increases the probability of biomagnifications of these heavy metals in higher order food chain. After entering the fish body, heavy metals induce detrimental changes in different vital organs by impairing multiple physiological and biochemical pathways that are essential for the species. Such alterations may include tissue damage, induction of oxidative stress, immune-suppression, endocrine disorders, uncontrolled cell proliferation, DNA damage, and even apoptosis. Although uncountable reports have explored the toxic effects of different heavy metals in diverse fish species, but surprisingly, only a few attempts have been made to ameliorate such toxic effects. Since, oxidative stress seems to be the underlying common factor in such heavy metal-induced toxicity, therefore, a potent and endogenous antioxidant with no side effect may be an appropriate therapeutic solution. Apart from summarizing the toxic effects of two important toxicants, i.e., cadmium and lead in fish, the novelty of the present treatise lies in its arguments in favor of using melatonin, an endogenous free radical scavenger and indirect antioxidant, in ameliorating the toxic effects of heavy metals in any fish species.
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Affiliation(s)
- Ashis Kumar Panigrahi
- The University of Burdwan, Burdwan, West Bengal, 713104, India
- Eco-toxicology, Fisheries & Aquaculture Extension Laboratory, Department of Zoology, University of Kalyani, Kalyani, West Beng, al-741235, India
| | - Palash Kumar Pal
- Oxidative Stress and Free Radical Biology Laboratory, Department of Physiology, University of Calcutta, 92, A.P.C. Road, Kolkata, 700009, India
| | - Dipanwita Sarkar Paria
- Department of Zoology, Chandernagore College, The University of Burdwan, Chandernagore, West Beng, al-712136, India.
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Sharawi ZW, Khatrawi SM, Wang Q, Zhou H, Cyrus K, Yan G, Hoxter B, Haddad BR, Martin MB. Calcium Activation of the Androgen Receptor in Prostate Cells. Int J Endocrinol 2023; 2023:9907948. [PMID: 38131032 PMCID: PMC10733593 DOI: 10.1155/2023/9907948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/01/2023] [Accepted: 11/06/2023] [Indexed: 12/23/2023] Open
Abstract
Background Although prostate cancer patients initially respond to androgen deprivation therapy, most patients progress to a resistant phenotype. Castration resistance is due, in part, to intratumoral and/or adrenal synthesis of androgens, overexpression or mutation of the androgen receptor (AR), stabilization of AR by chaperones, and ligand-independent activation of AR. Increasing evidence also links disruption of calcium homeostasis to progression of prostate cancer. Our previous study shows that heavy metal cadmium activates the AR through a ligand-independent mechanism. Cadmium mimics calcium in biological systems due to their similar ionic charge and radius. This study determines whether calcium activates AR and whether first- and second-generation antiandrogens block the ability of calcium to activate the receptor. Methods The expression of androgen-responsive genes and calcium channels was measured in prostate cells using a quantitative real-time polymerase chain reaction assay. Cell growth was measured. Results To ask whether calcium activates AR, prostate cells were treated with calcium in the absence and presence of the first-generation antiandrogens hydroxyflutamide and bicalutamide and the second-generation antiandrogen enzalutamide, and the expression of androgen-responsive genes and cell growth was measured. In the normal PWR-1E cells and HEK293T cells transiently expressing AR, treatment with calcium increased the expression of androgen-responsive genes by approximately 3-fold. The increase was blocked by enzalutamide but was not consistently blocked by the first-generation antiandrogens. In LNCaP cells which contain a mutant AR, treatment with calcium also increased the expression of androgen-responsive genes by approximately 3-fold, and the increase was more effectively blocked by enzalutamide than by hydroxyflutamide or bicalutamide. Treatment with calcium also increased cell growth that was blocked by enzalutamide. To ask whether dysregulation of calcium channels is associated with castration resistance, calcium channels were measured in the normal PWR-1E prostate cells, the hormone-responsive LNCaP cells, and the castration-resistant VCaP and 22RV1 cells. Compared to normal prostate cells, the hormone-responsive and hormone-resistant cells overexpressed several calcium channels. Conclusions The results of this study show that calcium activates AR and increases cell growth and that calcium channels are overexpressed in hormone-responsive and hormone-resistant prostate cancer cells. Taken together, the results suggest a novel role of calcium in the castration-resistant phenotype.
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Affiliation(s)
- Zeina W. Sharawi
- Departments of Oncology, Georgetown University, Washington, DC 20007, USA
- Department of Genetics and Human Genetics, Howard University, Washington, DC 20059, USA
- Biological Sciences Department, Faculty of Sciences, King AbdulAziz University, Jeddah, Saudi Arabia
| | - Sawsan M. Khatrawi
- Departments of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC 20007, USA
| | - Qiaochu Wang
- Departments of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC 20007, USA
| | - Hongzhao Zhou
- Departments of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC 20007, USA
| | - Kedra Cyrus
- Departments of Oncology, Georgetown University, Washington, DC 20007, USA
| | - Gai Yan
- Departments of Oncology, Georgetown University, Washington, DC 20007, USA
| | - Becky Hoxter
- Departments of Oncology, Georgetown University, Washington, DC 20007, USA
| | - Bassem R. Haddad
- Departments of Oncology, Georgetown University, Washington, DC 20007, USA
- Lombardi Comprehensive Cancer Center, Research Building, 3970 Reservoir Road NW, Washington, DC 20007, USA
| | - Mary Beth Martin
- Departments of Oncology, Georgetown University, Washington, DC 20007, USA
- Departments of Biochemistry, Molecular and Cellular Biology, Georgetown University, Washington, DC 20007, USA
- Lombardi Comprehensive Cancer Center, Research Building, 3970 Reservoir Road NW, Washington, DC 20007, USA
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Sepulchro Mulher LCC, Simões RP, Rossi KA, Schereider IRG, Silva Nascimento CLD, Ávila RA, Padilha AS. In vitro cadmium exposure induces structural damage and endothelial dysfunction in female rat aorta. Biometals 2023; 36:1405-1420. [PMID: 37651061 DOI: 10.1007/s10534-023-00526-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 07/31/2023] [Indexed: 09/01/2023]
Abstract
Cadmium is a heavy metal that is widespread in the environment and has been described as a metalloestrogen and a cardiovascular risk factor. Experimental studies conducted in male animals have shown that cadmium exposure induces vascular dysfunction, which could lead to vasculopathies caused by this metal. However, it is necessary to investigate the vascular effects of cadmium in female rats to understand its potential sex-dependent impact on the cardiovascular system. While its effects on male rats have been studied, cadmium may act differently in females due to its potential as a metalloestrogen. In vitro studies conducted in a controlled environment allow for a direct assessment of cadmium's impact on vascular function, and the use of female rats ensures that sex-dependent effects are evaluated. Therefore, the aim of this study was to investigate the in vitro effects of Cadmium Chloride (CdCl2, 5 µM) exposure on vascular reactivity in the isolated aorta of female Wistar rats. Exposure to CdCl2 damaged the architecture of the vascular endothelium. CdCl2 incubation increased the production and release of O2•-, reduced the participation of potassium (K+) channels, and increased the participation of the angiotensin II pathway in response to phenylephrine. Moreover, estrogen receptors alpha (Erα) modulated vascular reactivity to phenylephrine in the presence of cadmium, supporting the hypothesis that cadmium could act as a metalloestrogen. Our results demonstrated that in vitro cadmium exposure induces damage to endothelial architecture and an increase in oxidative stress in the isolated aorta of female rats, which could precipitate vasculopathies. Graphical Abstract. Own source from Canva and Servier Medical Art servers.
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Affiliation(s)
- Lorraine Christiny Costa Sepulchro Mulher
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Rakel Passos Simões
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Karoline Alves Rossi
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Ingridy Reinholz Grafites Schereider
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Camilla Lóren da Silva Nascimento
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Renata Andrade Ávila
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil
| | - Alessandra Simão Padilha
- Physiological Sciences Post-Graduation Program, CCS/UFES, Federal University of Espírito Santo, Av. Marechal Campos, 1468, 26 Maruípe, Vitoria, ES, 29043-900, Brazil.
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7
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Hall MS, Talge NM, Upson K. Urinary cadmium and endometriosis prevalence in a US nationally representative sample: results from NHANES 1999-2006. Hum Reprod 2023; 38:1835-1842. [PMID: 37487110 PMCID: PMC10477936 DOI: 10.1093/humrep/dead117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 05/15/2023] [Indexed: 07/26/2023] Open
Abstract
STUDY QUESTION Is exposure to toxic metal cadmium associated with increased endometriosis prevalence among a nationally representative sample of the US population? SUMMARY ANSWER Concentrations of urinary cadmium, a long-term biomarker (10-30 years) of cadmium exposure, were associated with an increased prevalence of endometriosis. WHAT IS KNOWN ALREADY Cadmium exhibits estrogenic properties and may increase the risk of endometriosis, a gynecologic condition associated with substantial morbidity, for which estrogen has a central pathogenic role. Previous epidemiological studies of cadmium and endometriosis have yielded mixed results, with null, positive, and inverse associations being reported. STUDY DESIGN, SIZE, DURATION We conducted a cross-sectional study using data from four cycles of the National Health and Nutrition Examination Survey (NHANES) 1999-2006. PARTICIPANTS/MATERIALS, SETTING, METHODS The study population comprised participants aged 20-54 years who had an endometriosis diagnosis, available data on urinary cadmium, and a glomerular filtration rate ≥60 ml/min/1.73 m2 (unweighted n = 1647). Urinary cadmium was measured by inductively coupled plasma-mass spectrometry, and we used urinary creatinine concentrations and covariate-adjusted standardization to account for urinary dilution. Self-reported diagnosis of endometriosis was ascertained by interview. We examined the association between quartiles of urinary cadmium and endometriosis using log-binomial regression to estimate adjusted prevalence ratios (aPRs) and 95% CIs. MAIN RESULTS AND THE ROLE OF CHANCE We observed twice the prevalence of endometriosis for participants with cadmium concentrations in the second quartile (versus the first quartile) (aPR 2.0, 95% CI: 1.1, 3.9) and the third quartile (versus the first quartile) (aPR 2.0, 95% CI: 1.1, 3.7). Our data also suggested a 60% increased prevalence of endometriosis with urinary cadmium concentrations in the fourth quartile (versus the first quartile) (aPR 1.6, 95% CI: 0.8, 3.2). In a sensitivity analysis, restricting the study population to premenopausal participants with an intact uterus and at least one ovary (unweighted n = 1298), stronger associations accompanied by wider CIs were observed. LIMITATIONS, REASONS FOR CAUTION We were limited by the ascertainment of urinary cadmium and endometriosis diagnosis at a single time point, given the cross-sectional study design, and we relied on self-report of endometriosis diagnosis. However, urinary cadmium characterizes long-term exposure and findings from validation studies suggest that misclassification of self-reported endometriosis diagnosis may be minimal. WIDER IMPLICATIONS OF THE FINDINGS This study suggests that cadmium is associated with an increased endometriosis prevalence. Given the substantial morbidity conferred by endometriosis and that the general population is ubiquitously exposed to cadmium, further research is warranted to confirm our findings. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the National Institute of Nursing Research (grant R00NR017191 to K.U.) of the National Institutes of Health. The authors report no conflict of interest. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Mandy S Hall
- Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University, East Lansing, MI, USA
| | - Nicole M Talge
- Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University, East Lansing, MI, USA
| | - Kristen Upson
- Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University, East Lansing, MI, USA
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Arteaga-Silva M, Limón-Morales O, Bonilla-Jaime H, Vigueras-Villaseñor RM, Rojas-Castañeda J, Hernández-Rodríguez J, Montes S, Hernández-González M, Ríos C. Effects of postnatal exposure to cadmium on male sexual incentive motivation and copulatory behavior: Estrogen and androgen receptors expression in adult brain rat. Reprod Toxicol 2023; 120:108445. [PMID: 37482142 DOI: 10.1016/j.reprotox.2023.108445] [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: 04/18/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
There are numerous evidence showing that cadmium (Cd) is an endocrine disruptor that exerts multiple toxic effects at different reproductive levels, including male sexual behavior (MSB). The effect of early exposure to Cd on sexual incentive motivation (SIM) and MSB in adult stage, and the immunoreactivity of receptors for hormones such as estrogens and androgens in brain regions that are relevant for the SIM and MSB display, have not been studied until now. The present study evaluated the effects of 0.5 and 1 mg/kg CdCl2 from day 1-56 of postnatal life on SIM and MSB in adults rats, as well as serum testosterone concentrations, Cd concentration in blood, testis, and brain areas, and the immunoreactivity in estrogen receptors (ER-α and -β), and androgen receptor (AR) in the olfactory bulbs (OB), medial preoptic area (mPOA), and medial amygdala (MeA). Our results showed that both doses of Cd decreased SIM and MSB, accompanied by low serum concentrations of testosterone. Also, there was a significant reduction in immunoreactivity of ER-α and AR in mPOA, and a significant reduction in AR in MeA on male rats treated with Cd 1 mg/kg. These results show that exposure to high doses of Cd in early postnatal life could alter the correct integration of hormonal signals in the brain areas that regulate and display SIM and MSB in adult male rats.
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Affiliation(s)
- Marcela Arteaga-Silva
- Departamento de Biología de la Reproducción, Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco No. 186, Col. Leyes de Reforma 1ª, Sección, Alcaldía Iztapalapa, C.P. 09340, A.P. 55-535, Ciudad de México, México.
| | - Ofelia Limón-Morales
- Departamento de Biología de la Reproducción, Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco No. 186, Col. Leyes de Reforma 1ª, Sección, Alcaldía Iztapalapa, C.P. 09340, A.P. 55-535, Ciudad de México, México
| | - Herlinda Bonilla-Jaime
- Departamento de Biología de la Reproducción, Universidad Autónoma Metropolitana-Iztapalapa, Av. Ferrocarril San Rafael Atlixco No. 186, Col. Leyes de Reforma 1ª, Sección, Alcaldía Iztapalapa, C.P. 09340, A.P. 55-535, Ciudad de México, México
| | - Rosa María Vigueras-Villaseñor
- Instituto Nacional de Pediatría, Calzada México Xochimilco No. 101, Colonia San Lorenzo Huipulco, Tlalpan, CP 14370 Ciudad de México, México
| | - Julio Rojas-Castañeda
- Instituto Nacional de Pediatría, Calzada México Xochimilco No. 101, Colonia San Lorenzo Huipulco, Tlalpan, CP 14370 Ciudad de México, México
| | - Joel Hernández-Rodríguez
- Cuerpo Académico de Investigación en Salud de la Licenciatura en Quiropráctica (CA-UNEVE-01), Universidad Estatal del Valle de Ecatepec, Estado de México 55210, México
| | - Sergio Montes
- Unidad Académica Multidisciplinaria Reynosa-Aztlán, Universidad Autónoma de Tamaulipas, Lago de Chapala y Calle 16, Aztlán, Reynosa 88740, México
| | - Marisela Hernández-González
- Instituto de Neurociencias, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Francisco de Quevedo No. 180, Col. Arcos Vallarta, 44130 Guadalajara, Jalisco, México
| | - Camilo Ríos
- Dirección de Investigación, Instituto Nacional de Rehabilitación, Secretaría de Salud, Ciudad de México 14389, México
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9
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Michalczyk K, Kupnicka P, Witczak G, Tousty P, Bosiacki M, Kurzawski M, Chlubek D, Cymbaluk-Płoska A. Assessment of Cadmium (Cd) and Lead (Pb) Blood Concentration on the Risk of Endometrial Cancer. BIOLOGY 2023; 12:biology12050717. [PMID: 37237530 DOI: 10.3390/biology12050717] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/08/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND Cadmium (Cd) and lead (Pb) are heavy metals with carcinogenic potential. Their increased concentration has been correlated with a risk of malignancies, including breast, lung, kidney, gastrointestinal, and gynecological cancers. Most of the studies have evaluated tissue heavy metal concentration. To the best of our knowledge, this is the first study to evaluate blood Cd and lead levels in different uterine pathologies and the risk of endometrial cancer. METHODS This study included 110 patients with a histopathological diagnosis of endometrial cancer, endometrial polyps, endometrial hyperplasia, uterine myoma, and normal endometrium. The patients included in the study were assessed in terms of their endometrial cancer risk factors and blood heavy metal levels. The analysis was conducted using inductively coupled plasma optical emission spectrometry. RESULTS There was a significant difference in the Cd and Cd/Pb ratio among the different groups of patients (p = 0.002), with higher a median Cd concentration among the endometrial cancer patients. The differences in Pb concentration were not significant (p = 0.717). There were also no differences in the Cd and Pb concentrations based on the patients' menopausal status nor BMI index. The univariate logistic regression showed a blood cadmium concentration above the median to be associated with an increased risk of endometrial cancer (OR = 5.25; 95% CI 1.56, 17.72). No significant associations were observed between the Pb concentration or Cd/Pb ratio and endometrial cancer risk. CONCLUSION The concentration of Cd varies in patients diagnosed with different uterine pathologies. Increased blood cadmium concentration seems to be a risk factor for endometrial studies. Further research on greater populations, accounting for environmental and lifestyle heavy metal exposure, is required to validate our findings.
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Affiliation(s)
- Kaja Michalczyk
- Department of Gynecological Surgery and Gynecological Oncology of Adults and Adolescents, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Patrycja Kupnicka
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Grzegorz Witczak
- Department of Gynecological Surgery and Gynecological Oncology of Adults and Adolescents, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Piotr Tousty
- Department of Obstetrics and Gynecology, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Mateusz Bosiacki
- Department of Functional Diagnostics and Physical Medicine, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Mateusz Kurzawski
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Aneta Cymbaluk-Płoska
- Department of Reconstructive Surgery and Gynecological Oncology, Pomeranian Medical University, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland
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10
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Gerald AC, Ganapathy S, Zhu J, Wei Y. Exposure to endocrine-disrupting metals and serum estrogen levels among US women. Reprod Toxicol 2023; 118:108392. [PMID: 37150308 DOI: 10.1016/j.reprotox.2023.108392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 05/01/2023] [Accepted: 05/04/2023] [Indexed: 05/09/2023]
Abstract
Multiple factors could affect estrogen levels in the body; however, the impact of exposure to endocrine-disrupting chemicals on estrogen levels in humans remains inconclusive. This cross-sectional study was to assess the association between blood levels of endocrine-disrupting metals (including cadmium, lead, and mercury) and serum estradiol levels in 1618 women (aged ≥20 years) who participated in the 2013-2016 National Health and Nutrition Examination Survey. Using multiple general linear models, we estimated percent changes of estradiol levels in association with blood metal concentrations. Age-specific analysis was further conducted. The median level of blood cadmium, lead, and mercury was 0.31µg/L (range: 0.07-7.23), 0.76µg/dL (0.11-12.80), and 0.73µg/L (0.20-36.90), respectively, and the median estradiol level was 31.10pg/mL (range, 2.12-523.00) among women aged 20-80 years. After adjusting for potential confounders, a 10% increase in blood cadmium and lead levels was associated with 1.43% (95% CI: 0.50, 2.37) increased levels and 1.45% (-2.17, -0.11) decreased levels of estrogen, respectively, in the total study population. When stratified by age, the positive association with cadmium was only seen in women aged 20-49 years [1.47% (0.39, 2.56) increased estradiol] and the inverse association with lead was seen among women aged 50-80 years [3.40% (-4.78, -2.00) decreased estradiol]. Mercury was not significantly associated with estrogen levels. Our study demonstrates a potential relationship between exposure to endocrine-disrupting cadmium and lead and serum estrogen levels in US women. Age-specific associations were observed. Prospective and mechanistic studies are warranted to further explore these interactions and the associated reproductive toxicities.
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Affiliation(s)
| | | | - Jianmin Zhu
- Department of Mathematics and Computer Science, Fort Valley State University, Fort Valley, Georgia, USA
| | - Yudan Wei
- Department of Community Medicine, Mercer University School of Medicine, Macon, Georgia, USA.
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11
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Alva-Gallegos R, Carazo A, Mladěnka P. Toxicity overview of endocrine disrupting chemicals interacting in vitro with the oestrogen receptor. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104089. [PMID: 36841273 DOI: 10.1016/j.etap.2023.104089] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
The oestrogen receptor (ER) from the nuclear receptor family is involved in different physiological processes, which can be affected by multiple xenobiotics. Some of these compounds, such as bisphenols, pesticides, and phthalates, are widespread as consequence of human activities and are commonly present also in human organism. Xenobiotics able to interact with ER and trigger a hormone-like response, are known as endocrine disruptors. In this review, we aim to summarize the available knowledge on products derived from human industrial activity and other xenobiotics reported to interact with ER. ER-disrupting chemicals behave differently towards oestrogen-dependent cell lines than endogenous oestradiol. In low concentrations, they stimulate proliferation, whereas at higher concentrations, are toxic to cells. In addition, most of the knowledge on the topic is based on individual compound testing, and only a few studies assess xenobiotic combinations, which better resemble real circumstances. Confirmation from in vivo models is lacking also.
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Affiliation(s)
- Raul Alva-Gallegos
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Alejandro Carazo
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic.
| | - Přemysl Mladěnka
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
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12
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Malin Igra A, Rahman A, Johansson AL, Pervin J, Svefors P, Arifeen SE, Vahter M, Persson LÅ, Kippler M. Early Life Environmental Exposure to Cadmium, Lead, and Arsenic and Age at Menarche: A Longitudinal Mother-Child Cohort Study in Bangladesh. ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:27003. [PMID: 36729392 PMCID: PMC9894154 DOI: 10.1289/ehp11121] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 12/07/2022] [Accepted: 01/03/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Several metals act as endocrine disruptors, but there are few large longitudinal studies about associations with puberty onset. OBJECTIVES We evaluated whether early life cadmium, lead, and arsenic exposure was associated with timing of menarche. METHODS In a mother-child cohort in rural Bangladesh (n=935), the exposure was assessed by concentrations in maternal erythrocytes in early pregnancy and in girls' urine at 5 and 10 years of age using inductively coupled plasma mass spectrometry. The girls were interviewed twice, at average ages 13.3 [standard deviation (SD)=0.43] and 13.8 (SD=0.43) y, and the date of menarche, if present, was recorded. Associations were assessed using Kaplan-Meier analysis and multivariable-adjusted Cox regression. RESULTS In total, 77% of the girls (n=717) had reached menarche by the second follow-up. The median age of menarche among all girls was 13.0 y (25th-75th percentiles: 12.4-13.7 y). At 10 years of age, median urinary cadmium was 0.25μg/L (5th-95th percentiles: 0.087-0.72μg/L), lead 1.6μg/L (0.70-4.2μg/L), and arsenic 54μg/L (19-395μg/L). Given the same age, girls in the highest quartile of urinary cadmium at 5 and 10 years of age had a lower rate of menarche than girls in the lowest quartile, with an adjusted hazard ratio of (HR) 0.80 (95% CI: 0.62, 1.01) at 5 years of age, and 0.77 (95% CI: 0.60, 0.98) at 10 years of age. This implies that girls in the highest cadmium exposure quartile during childhood had a higher age at menarche. Comparing girls in the highest to the lowest quartile of urinary lead at 10 years of age, the former had a higher rate of menarche [adjusted HR = 1.23 (95% CI: 0.97, 1.56)], implying lower age at menarche, whereas there was no association with urinary lead at 5 years of age. Girls born to mothers in the highest quartile of erythrocyte arsenic during pregnancy were less likely to have attained menarche than girls born to mothers in the lowest quartile [adjusted HR= 0.79 (95% CI: 0.62, 0.99)]. No association was found with girls' urinary arsenic exposure. DISCUSSION Long-term childhood cadmium exposure was associated with later menarche, whereas the associations with child lead exposure were inconclusive. Maternal exposure to arsenic, but not cadmium or lead, was associated with later menarche. https://doi.org/10.1289/EHP11121.
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Affiliation(s)
| | - Anisur Rahman
- Maternal and Child Health Division, International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Anna L.V. Johansson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Jesmin Pervin
- Maternal and Child Health Division, International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Pernilla Svefors
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - Shams El Arifeen
- Maternal and Child Health Division, International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Marie Vahter
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Lars-Åke Persson
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
- London School of Hygiene and Tropical Medicine, London, UK
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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13
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Sadeghmousavi S, Rezaei N, Hanaei S. Nutrition and Diet: A Double-Edged Sword in Development and Treatment of Brain Tumors. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1394:153-180. [PMID: 36587387 DOI: 10.1007/978-3-031-14732-6_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Brain tumor (BT) is the second most common pediatric cancer, one of the most common cancers among adults, and the major cause of cancer-related morbidity and mortality worldwide. Both genetics and environment can contribute to BT induction. One of the environmental risks is diet which has not been proven as a certain hazard yet. The objective of the current chapter was to review the literature concerning both positive and negative effects of nutrition on BT risk.
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Affiliation(s)
- Shaghayegh Sadeghmousavi
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Nima Rezaei
- Universal Scientific Education and Research Network (USERN), Tehran, Iran.,Department of Immunology, School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Sara Hanaei
- Universal Scientific Education and Research Network (USERN), Tehran, Iran. .,Department of Neurosurgery, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
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14
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The Role of Lead and Cadmium in Gynecological Malignancies. Antioxidants (Basel) 2022; 11:antiox11122468. [PMID: 36552675 PMCID: PMC9774668 DOI: 10.3390/antiox11122468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Lead and cadmium are non-essential and toxic heavy metals. Their presence and elevated levels can lead to many pathologies. They disrupt the antioxidant properties of many enzymes, consume the resources of antioxidant cells, and thus participate in the generation of oxidative stress, which may result in DNA damage. In addition, they have been found to be carcinogenic through their genotoxic properties. They have been shown to be present in various types of cancer, including cancer of the female reproductive system. Both metals have been recognized as metalloestrogens, which are important in hormone-related cancers. Participation in the oncogenesis of ovarian, endometrial and cervical cancer was analysed in detail, using the available research in this field. We emphasize their role as potential biomarkers in cancer risk and diagnosis as well as advancement of gynaecological malignancies.
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15
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Harper E, Cunningham E, Connolly L. Using in vitro bioassays to guide the development of safer bio-based polymers for use in food packaging. FRONTIERS IN TOXICOLOGY 2022; 4:936014. [PMID: 36204697 PMCID: PMC9531239 DOI: 10.3389/ftox.2022.936014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 08/01/2022] [Indexed: 11/24/2022] Open
Abstract
Petroleum-based polymers traditionally used for plastic packaging production have been shown to leach dangerous chemicals such as bisphenol-A (BPA). Bio-based polymers are potentially safer alternatives, and many can be sustainably sourced from waste streams in the food industry. This study assesses bio-based polymers undergoing food packaging development for migration of endocrine disrupting leachates at the level of estrogen, androgen and progestagen nuclear receptor transcriptional activity. Reporter gene assays were coupled with migration testing, performed using standardised test conditions for storage and temperature. Test samples include nine bio-based polymers and four inorganic waste additives mixed with a traditional petroleum-based polymer, polypropylene. Thermoplastic starch material, polybutylene succinate, polycaprolactone, polybutylene adipate terephthalate (PBAT), two polylactic acid (PLA)/PBAT blends, polyhydroxybutyrate (PHB) and eggshell/polypropylene (10:90) presented no significant reduction in metabolic activity or hormonal activity under any test condition. Polypropylene (PP) presented no hormonal activity. Metabolic activity was reduced in the estrogen responsive cell line after 10 days migration testing of eggshell/polypropylene (0.1:99.9) in MeOH at 40°C, and PP in MeOH and dH20. Estrogenic agonist activity was observed after 10 days in poultry litter ash/polypropylene (10:90) in MeOH at 20°C and 40°C, poultry feather based polymer in MeOH and dH2O at 40°C, and eggshell/polypropylene (40:60) and PLA in dH2O at 40°C. Activity was within a range of 0.26-0.50 ng 17β-estradiol equivalents per ml, equating to an estrogenic potency of 3-∼2800 times less than the estrogenic leachate BPA. Poultry litter ash/polypropylene (10:90) in MeOH for 10 days presented estrogenic activity at 20°C and 40°C within the above range and anti-androgenic activity at 40°C. Progestagenic activity was not observed for any of the compounds under any test condition. Interestingly, lower concentrations of eggshell or PP may eliminate eggshell estrogenicity and PP toxicity. Alternatively eggshell may bind and eliminate the toxic elements of PP. Similarly, PLA estrogenic activity was removed in both PLA/PBAT blends. This study demonstrates the benefits of bioassay guidance in the development of safer and sustainable packaging alternatives to petroleum-based plastics. Manipulating the types of additives and their formulations alongside toxicological testing may further improve safety aspects.
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Affiliation(s)
- Emma Harper
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, Belfast, United Kingdom
| | - Eoin Cunningham
- School of Mechanical and Aerospace Engineering, Queen’s University Belfast, Belfast, United Kingdom
| | - Lisa Connolly
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, Belfast, United Kingdom
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16
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Kateryna T, Monika L, Beata J, Joanna R, Edyta R, Marcin B, Agnieszka KW, Ewa J. Cadmium and breast cancer – current state and research gaps in the underlying mechanisms. Toxicol Lett 2022; 361:29-42. [DOI: 10.1016/j.toxlet.2022.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 02/04/2022] [Accepted: 03/17/2022] [Indexed: 01/02/2023]
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17
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Ashrap P, Watkins DJ, Mukherjee B, Rosario-Pabón Z, Vélez-Vega CM, Alshawabkeh A, Cordero JF, Meeker JD. Performance of urine, blood, and integrated metal biomarkers in relation to birth outcomes in a mixture setting. ENVIRONMENTAL RESEARCH 2021; 200:111435. [PMID: 34097892 PMCID: PMC8403638 DOI: 10.1016/j.envres.2021.111435] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/07/2021] [Accepted: 05/27/2021] [Indexed: 05/08/2023]
Abstract
BACKGROUND Studies on the health effects of metal mixtures typically utilize biomarkers measured in a single biological medium, such as blood or urine. However, the ability to evaluate mixture effects are limited by the uncertainty whether a unified medium can fully capture exposure for each metal. Therefore, it is important to compare and assess metal mixtures measured in different media in epidemiology studies. OBJECTIVES The aim of this study was to examine the mixture predictive performance of urine and blood metal biomarkers and integrated multi-media biomarkers in association with birth outcomes. METHODS In our analysis of 847 women from the Puerto Rico PROTECT Cohort, we measured 10 essential and non-essential metals in repeated and paired samples of urine and blood during pregnancy. For each metal, we integrated exposure estimates from paired urine and blood biomarkers into multi-media biomarkers (MMBs), using intraclass-correlation coefficient (ICC) and weighted quantile sum (WQS) approaches. Using Ridge regressions, four separate Environmental risk scores (ERSs) for metals in urine, blood, MMBICC, and MMBWQS were computed as a weighted sum of the 10 metal concentrations. We then examined associations between urine, blood, and multi-media biomarker ERSs and birth outcomes using linear and logistic regressions, adjusting for maternal age, maternal education, pre-pregnancy body mass index (BMI), and second-hand smoke exposure. The performance of each ERS was evaluated with continuous and tertile estimates and 95% confidence intervals of the odds ratio of preterm birth using area under the curve (AUC). RESULTS Pb was the most important contributor of blood ERS as well as the two integrated multi-media biomarker ERSs. Individuals with high ERS (3rd tertile) showed increased odds of preterm birth compared to individuals with low ERS (1st tertile), with 2.8-fold (95% CI, 1.49 to 5.40) for urine (specific gravity corrected); 3.2- fold (95% CI, 1.68 to 6.25) for blood; 3.9-fold (95% CI, 1.72 to 8.66) for multi-media biomarkers composed using ICC; and 5.2-fold (95% CI, 2.34 to 11.42) for multi-media biomarkers composed using WQS. The four ERSs had comparable predictive performances (AUC ranging from 0.64 to 0.68) when urine is examined with specific gravity corrected concentrations. CONCLUSIONS Within a practical metal panel, measuring metals in either urine or blood may be an equally good approach to evaluate the metals as a mixture. Applications in practical study design require validation of these methods with other cohorts, larger panels of metals and within the context of other adverse health effects of interest.
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Affiliation(s)
- Pahriya Ashrap
- University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, United States
| | - Deborah J Watkins
- University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, United States
| | - Bhramar Mukherjee
- University of Michigan School of Public Health, Department of Biostatistics, Ann Arbor, MI, United States
| | - Zaira Rosario-Pabón
- University of Puerto Rico Graduate School of Public Health, UPR Medical Sciences Campus, San Juan, PR, USA
| | - Carmen M Vélez-Vega
- University of Puerto Rico Graduate School of Public Health, UPR Medical Sciences Campus, San Juan, PR, USA
| | - Akram Alshawabkeh
- College of Engineering, Northeastern University, Boston, MA, United States
| | - José F Cordero
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, Georgia, United States
| | - John D Meeker
- University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, United States.
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18
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Anđelković M, Djordjevic AB, Miljaković EA, Javorac D, Čolaković N, Oprić S, Petričević S, Granić M, Kotur-Stevuljević J, Antonijević B, Bulat Z. Cadmium tissue level in women diagnosed with breast cancer - A case control study. ENVIRONMENTAL RESEARCH 2021; 199:111300. [PMID: 34015299 DOI: 10.1016/j.envres.2021.111300] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/05/2021] [Accepted: 05/05/2021] [Indexed: 05/25/2023]
Abstract
Breast cancer is at the forefront of female malignancy and the leading cause of cancer death among women. Gender, age, hormone therapy, smoking, exposure to endocrine disruptors and family history are significant breast cancer risk factors according to epidemiological data. Considering metalloestrogenic Cd property and a plethora of research work on hormone involvement in breast cancer the study aimed to determine Cd concentration in three compartments of breast cancer patients in relation to their blood hormone status. Further, as oxidative stress is a critical mechanism of Cd toxicity, the objective of this study was to determine potential changes in oxidative status homeostasis. The study enrolled 55 patients with breast cancer diagnosis and 41 healthy women with benign breast changes. Concentration of Cd was determined using graphite furnace atomic absorption spectrometry. Cadmium concentration in tumor tissue was significantly higher than control and almost four times higher than Cd concentration in the healthy surrounding tissue. Strong positive correlation was observed between Cd concentrations in changed breast tissue and FSH and LH levels, while the correlation was negative with estradiol level. Cancer patients had significantly increased blood total antioxidative status while total oxidative status did not significantly differ between study groups. The study revealed Cd implication in breast cancer onset following a significant odd ratio for Cd levels in changed tissue samples. Moreover, presented data confirmed sex hormone and oxidative status imbalance caused by Cd presence, closely related to cancer development.
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Affiliation(s)
- Milena Anđelković
- Health Center Kosovska Mitrovica, 38220, Kosovska Mitrovica, Serbia; Department of Toxicology ″Akademik Danilo Soldatović″, Faculty of Pharmacy, University of Belgrade, 11211, Belgrade, Serbia.
| | - Aleksandra Buha Djordjevic
- Department of Toxicology ″Akademik Danilo Soldatović″, Faculty of Pharmacy, University of Belgrade, 11211, Belgrade, Serbia.
| | - Evica Antonijević Miljaković
- Department of Toxicology ″Akademik Danilo Soldatović″, Faculty of Pharmacy, University of Belgrade, 11211, Belgrade, Serbia.
| | - Dragana Javorac
- Department of Toxicology ″Akademik Danilo Soldatović″, Faculty of Pharmacy, University of Belgrade, 11211, Belgrade, Serbia.
| | - Nataša Čolaković
- University Hospital Medical Center Bezanijska Kosa, 11080, Belgrade, Serbia; Faculty of Medicine, University of Belgrade, 11211, Belgrade, Serbia.
| | - Svetlana Oprić
- University Hospital Medical Center Bezanijska Kosa, 11080, Belgrade, Serbia; Faculty of Dentistry Pančevo, University Business Academy Novi Sad, 26000, Pančevo, Serbia.
| | - Simona Petričević
- University Hospital Medical Center Bezanijska Kosa, 11080, Belgrade, Serbia.
| | - Miroslav Granić
- University Hospital Medical Center Bezanijska Kosa, 11080, Belgrade, Serbia; Faculty of Medicine, University of Belgrade, 11211, Belgrade, Serbia.
| | - Jelena Kotur-Stevuljević
- Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, 11221, Belgrade, Serbia.
| | - Biljana Antonijević
- Department of Toxicology ″Akademik Danilo Soldatović″, Faculty of Pharmacy, University of Belgrade, 11211, Belgrade, Serbia.
| | - Zorica Bulat
- Department of Toxicology ″Akademik Danilo Soldatović″, Faculty of Pharmacy, University of Belgrade, 11211, Belgrade, Serbia.
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19
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Ashrap P, Meeker JD, Sánchez BN, Basu N, Tamayo-Ortiz M, Solano-González M, Mercado-García A, Téllez-Rojo MM, Peterson KE, Watkins DJ. In utero and peripubertal metals exposure in relation to reproductive hormones and sexual maturation and progression among boys in Mexico City. Environ Health 2020; 19:124. [PMID: 33239073 PMCID: PMC7688001 DOI: 10.1186/s12940-020-00672-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/30/2020] [Indexed: 05/28/2023]
Abstract
BACKGROUND Endocrine disrupting chemicals (EDCs) such as metals have been reported to alter circulating reproductive hormone concentrations and pubertal development in animals. However, the relationship has rarely been investigated among humans, with the exception of heavy metals, such as Pb and Cd. Our aim was to investigate measures of in utero and peripubertal metal exposure in relation to reproductive hormone concentrations and sexual maturation and progression among boys from the Early Life Exposure in Mexico to Environmental Toxicants (ELEMENT) cohorts. METHODS Our analysis included 118 pregnant women and their male children from the ELEMENT study. Essential and non-essential metals were measured in urine collected from the mothers during the third trimester of pregnancy and their male children at 8-14 years. Reproductive hormone concentrations [serum testosterone, estradiol, dehydroepiandrosterone sulfate (DHEA-S), inhibin B, and sex hormone-binding globulin (SHBG)] were measured in blood samples from the children at 8-14 years. We also assessed Tanner stages for sexual maturation (genital, pubic hair development, and testicular volume), at two time points (8-14, 10-18 years). We used linear regression to independently examine urinary metal concentrations in relation to each peripubertal reproductive hormones adjusting for child age and BMI. Generalized estimation equations (GEEs) were used to evaluate the association of in utero and peripubertal metal exposures with sexual maturation and progression during follow-up based on Tanner staging and testicular volume. RESULTS In utero and prepubertal concentrations of some urinary metals were associated with increased concentrations of peripubertal reproductive hormones, especially non-essential metal(loid)s As and Cd (in utero), and Ba (peripubertal) as well as essential metal Mo (in utero) in association with testosterone. More advanced pubic hair developmental stage and higher testicular volume at the early teen visit was observed for boys with higher non-essential metal concentrations, including in utero Al and peripubertal Ba, and essential metal Zn concentration (peripubertal). These metals were also associated with slower pubertal progression between the two visits. CONCLUSION These findings suggest that male reproductive development may be associated with both essential and non-essential metal exposure during in utero and peripubertal windows.
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Affiliation(s)
- Pahriya Ashrap
- Department of Environmental Health Sciences, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI 48109 USA
| | - John D. Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI 48109 USA
| | - Brisa N. Sánchez
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI USA
| | - Niladri Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada
| | - Marcela Tamayo-Ortiz
- Center for Nutrition and Health Research, Instituto Nacional de Salud Pública, Cuernavaca, Morelos Mexico
- Mexican Council for Science and Technology, Mexico City, Mexico
| | - Maritsa Solano-González
- Center for Nutrition and Health Research, Instituto Nacional de Salud Pública, Cuernavaca, Morelos Mexico
| | - Adriana Mercado-García
- Center for Nutrition and Health Research, Instituto Nacional de Salud Pública, Cuernavaca, Morelos Mexico
| | - Martha M. Téllez-Rojo
- Center for Nutrition and Health Research, Instituto Nacional de Salud Pública, Cuernavaca, Morelos Mexico
| | - Karen E. Peterson
- Department of Environmental Health Sciences, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI 48109 USA
- Department of Nutritional 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, 1415 Washington Heights, Ann Arbor, MI 48109 USA
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20
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Zhu Y, Costa M. Metals and molecular carcinogenesis. Carcinogenesis 2020; 41:1161-1172. [PMID: 32674145 PMCID: PMC7513952 DOI: 10.1093/carcin/bgaa076] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/19/2020] [Accepted: 07/13/2020] [Indexed: 12/11/2022] Open
Abstract
Many metals are essential for living organisms, but at higher doses they may be toxic and carcinogenic. Metal exposure occurs mainly in occupational settings and environmental contaminations in drinking water, air pollution and foods, which can result in serious health problems such as cancer. Arsenic (As), beryllium (Be), cadmium (Cd), chromium (Cr) and nickel (Ni) are classified as Group 1 carcinogens by the International Agency for Research on Cancer. This review provides a comprehensive summary of current concepts of the molecular mechanisms of metal-induced carcinogenesis and focusing on a variety of pathways, including genotoxicity, mutagenesis, oxidative stress, epigenetic modifications such as DNA methylation, histone post-translational modification and alteration in microRNA regulation, competition with essential metal ions and cancer-related signaling pathways. This review takes a broader perspective and aims to assist in guiding future research with respect to the prevention and therapy of metal exposure in human diseases including cancer.
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Affiliation(s)
- Yusha Zhu
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
| | - Max Costa
- Department of Environmental Medicine, New York University Grossman School of Medicine, New York, NY, USA
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21
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Duan W, Xu C, Liu Q, Xu J, Weng Z, Zhang X, Basnet TB, Dahal M, Gu A. Levels of a mixture of heavy metals in blood and urine and all-cause, cardiovascular disease and cancer mortality: A population-based cohort study. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 263:114630. [PMID: 33618481 DOI: 10.1016/j.envpol.2020.114630] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 03/31/2020] [Accepted: 04/16/2020] [Indexed: 05/25/2023]
Abstract
People are exposed to heavy metals in many ways during the course of their daily life. However, the effect of mixtures of heavy metals on mortality in the U.S. general population is unclear. We aimed to investigate the association between heavy metal concentrations (blood [lead, cadmium and mercury] and urine [barium, cadmium, cobalt, cesium, molybdenum, lead, antimony, titanium, tungsten and uranium]) and all-cause, cardiovascular disease (CVD) and cancer mortality. Data were obtained from the National Health and Nutrition Examination Survey (NHANES) 1999-2014. Poisson regression was performed to analyze the associations between single-metal and multimetal exposure and mortality. The following variables were adjusted as covariates: demographic variables (age, education, sex and ethnicity), anthropometric variables (body mass index), lifestyle variables (family income, serum cotinine category and physical activity) and medical comorbidities (CVD and diabetes). A total of 26,056 subjects from the NHANES were included in the present study (mean follow-up, 7.4 years). The age of the participants ranged from 20 to 85 years. The blood metal mixture was associated with all-cause mortality (RR = 1.38, 95% CI 1.25, 1.51), CVD mortality (RR = 1.43, 95% CI 1.06, 1.94) and cancer mortality (RR = 1.41, 95% CI 1.12, 1.76) and cadmium had the highest weight in the weighted quantile sum (WQS) regression for all associations. The urinary metal mixture was associated with an increased risk of all-cause (RR = 1.48, 95% CI 1.30, 1.68) and cancer mortality (RR = 1.60, 95% CI 1.02, 2.52). Sex differences were found in the associations of both blood and urine metal mixtures with cancer mortality. Our study suggests a potential positive association for the concentrations of heavy metal mixtures with overall, CVD and cancer mortality based on a large sample of the U.S. general population. Nevertheless, further studies are needed to confirm these important findings.
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Affiliation(s)
- Weiwei Duan
- Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, China
| | - Cheng Xu
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Qian Liu
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Jin Xu
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China; Department of Maternal, Child, and Adolescent Health, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Zhenkun Weng
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Xin Zhang
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Til Bahadur Basnet
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Maginsh Dahal
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China
| | - Aihua Gu
- State Key Laboratory of Reproductive Medicine, School of Public Health, Nanjing Medical University, Nanjing, China; Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, Nanjing Medical University, Nanjing, China.
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22
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Sakurai M, Suwazono Y, Nishijo M, Nogawa K, Watanabe Y, Ishizaki M, Morikawa Y, Kido T, Nakagawa H. Relationship between urinary β 2 -microglobulin concentration and mortality in a cadmium-polluted area in Japan: A 35-year follow-up study. J Appl Toxicol 2020; 41:224-232. [PMID: 32667055 DOI: 10.1002/jat.4038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/19/2020] [Accepted: 06/24/2020] [Indexed: 01/14/2023]
Abstract
The relationship between urinary β2 -microglobulin (β2 -MG) and the risk of all-cause mortality and cause-specific mortality in a cadmium (Cd)-polluted area was investigated in 3139 inhabitants (1404 men and 1735 women) of the Kakehashi River basin in Japan at 35-year follow-up. The subjects had been participants in the 1981-1982 health impact survey that assessed Cd-induced renal dysfunction, as measured by the urinary β2 -MG concentration. Hazard ratios were calculated to assess the risk of all-cause and cause-specific mortality according to the urinary β2 -MG concentrations. Risk ratios (RRs) were assessed using the Fine and Gray regression model to account for competing risks of cause-specific mortality. The mortality rate was significantly higher in participants with urinary β2 -MG concentrations >1000 μg/g creatinine (Cr) for men and >300 μg/g Cr for women. In the proportional hazard model, higher urinary β2 -MG concentrations were associated with higher risks of circulatory disease, digestive system diseases, and kidney and urinary tract diseases in men and women, and with senility for women. However, when competing risk was accounted for, the RRs were significantly higher only for kidney and urinary tract diseases in men and women (RR for each increment of 1000 μg/g Cr [95% confidence interval]: 1.02 [1.00-1.04] for men, and 1.01 [1.00-1.02] for women). The long-term prognosis of participants with renal tubular dysfunction was poor, most likely due to kidney and renal tract diseases.
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Affiliation(s)
- Masaru Sakurai
- Department of Social and Environmental Medicine, Kanazawa Medical University, Uchinada, Japan.,Health Evaluation Center, Kanazawa Medical University, Uchinada, Japan
| | - Yasushi Suwazono
- Department of Occupation and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Muneko Nishijo
- Department of Epidemiology and Public Health, Kanazawa Medical University, Uchinada, Japan
| | - Kazuhiro Nogawa
- Department of Occupation and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yuuka Watanabe
- Department of Occupation and Environmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masao Ishizaki
- Department of Social and Environmental Medicine, Kanazawa Medical University, Uchinada, Japan.,Health Evaluation Center, Kanazawa Medical University, Uchinada, Japan
| | - Yuko Morikawa
- School of Nursing, Kanazawa Medical University, Uchinada, Japan
| | - Teruhiko Kido
- School of Health Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hideaki Nakagawa
- Department of Social and Environmental Medicine, Kanazawa Medical University, Uchinada, Japan
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23
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Divekar SD, Li HH, Parodi DA, Ghafouri TB, Chen R, Cyrus K, Foxworth AE, Fornace AJ, Byrne C, Martin MB. Arsenite and cadmium promote the development of mammary tumors. Carcinogenesis 2020; 41:1005-1014. [PMID: 31646340 PMCID: PMC7359772 DOI: 10.1093/carcin/bgz176] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 10/15/2019] [Accepted: 10/21/2019] [Indexed: 12/12/2022] Open
Abstract
Previous studies demonstrate that the heavy metal cadmium and the metalloid arsenite activate estrogen receptor-alpha in breast cancer cells by forming a high-affinity complex with the ligand-binding domain of the receptor and that environmentally relevant doses of cadmium have estrogen-like activity in vivo. The present study showed that in estrogen-receptor positive cells, arsenite and cadmium increased the global expression of estrogen-responsive genes and that an environmentally relevant dose of arsenite also had estrogen-like activity in vivo. Similar to estrogens, exposure of ovariectomized animals to arsenite induced the expression of the progesterone receptor, GREB1, and c-fos in the mammary gland and the expression of complement C3, c-fos, and cyclin D1 in the uterus and the increase was blocked by the antiestrogen ICI-182,780. When virgin female animals were fed a diet, that mimics exposure to either arsenite or cadmium, and challenged with the chemical carcinogen dimethylbenzanthracene, there was an increase in the incidence of mammary tumors and a decrease in the time to tumor onset, but no difference in the total number of tumors, tumor multiplicity, or total tumor volume. Together with published results, these data showed that environmentally relevant amounts of arsenite and cadmium had estrogen-like activity in vivo and promoted mammary tumorigenesis.
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Affiliation(s)
| | - Heng-Hong Li
- Department of Oncology, Georgetown University, Washington DC, USA
| | - Daniela A Parodi
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington DC, USA
| | | | - Renxiang Chen
- Department of Oncology, Georgetown University, Washington DC, USA
| | - Kedra Cyrus
- Department of Oncology, Georgetown University, Washington DC, USA
| | - Aaron E Foxworth
- Department of Oncology, Georgetown University, Washington DC, USA
| | - Albert J Fornace
- Department of Oncology, Georgetown University, Washington DC, USA
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington DC, USA
| | - Celia Byrne
- Department of Preventive Medicine and Biometrics, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Mary Beth Martin
- Department of Oncology, Georgetown University, Washington DC, USA
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington DC, USA
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Intrinsic and Extrinsic Factors Governing the Transcriptional Regulation of ESR1. Discov Oncol 2020; 11:129-147. [PMID: 32592004 DOI: 10.1007/s12672-020-00388-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/02/2020] [Indexed: 02/06/2023] Open
Abstract
Transcriptional regulation of ESR1, the gene that encodes for estrogen receptor α (ER), is critical for regulating the downstream effects of the estrogen signaling pathway in breast cancer such as cell growth. ESR1 is a large and complex gene that is regulated by multiple regulatory elements, which has complicated our understanding of how ESR1 expression is controlled in the context of breast cancer. Early studies characterized the genomic structure of ESR1 with subsequent studies focused on identifying intrinsic (chromatin environment, transcription factors, signaling pathways) and extrinsic (tumor microenvironment, secreted factors) mechanisms that impact ESR1 gene expression. Currently, the introduction of genomic sequencing platforms and additional genome-wide technologies has provided additional insight on how chromatin structures may coordinate with these intrinsic and extrinsic mechanisms to regulate ESR1 expression. Understanding these interactions will allow us to have a clearer understanding of how ESR1 expression is regulated and eventually provide clues on how to influence its regulation with potential treatments. In this review, we highlight key studies concerning the genomic structure of ESR1, mechanisms that affect the dynamics of ESR1 expression, and considerations towards affecting ESR1 expression and hormone responsiveness in breast cancer.
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Zhu M, Li H, Miao L, Li L, Dong X, Zou X. Dietary cadmium chloride impairs shell biomineralization by disrupting the metabolism of the eggshell gland in laying hens. J Anim Sci 2020; 98:5715281. [PMID: 31974567 DOI: 10.1093/jas/skaa025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 01/23/2020] [Indexed: 01/29/2023] Open
Abstract
In this study, we identified cadmium (Cd) as a potential endocrine disruptor that impairs laying performance, egg quality, and eggshell deposition and induces oxidative stress and inflammation in the eggshell glands of laying hens. A total of 480 38-wk-old laying hens were randomly assigned into 5 groups that were fed a basal diet (control) or a basal diet supplemented with Cd (provided as CdCl2·2.5 H2O) at 7.5, 15, 30, and 60 mg Cd per kg feed for 9 wk. The results showed that, when compared with the control group, a low dose of dietary Cd (7.5 mg/kg) had positive effects on egg quality by improving albumen height, Haugh unit, yolk color, and shell thickness at the third or ninth week. However, with the increase in the dose and duration of Cd exposure, the laying performance, egg quality, and activities of eggshell gland antioxidant enzymes (catalase [CAT], glutathione peroxide [GSH-Px]), and ATPase (Na+/K+-ATPase, Ca2+-ATPase, and Mg2+-ATPase) deteriorated, and the activity of total nitric oxide synthase (T-NOS) and the level of malondialdehyde (MDA) increased significantly (P < 0.05). The histopathology and real-time quantitative PCR results showed that Cd induced endometrial epithelial cell proliferation accompanied by upregulation of the mRNA levels of progesterone receptor (PgR) and epidermal growth factor receptor (EGFR), downregulation of the mRNA levels of estrogen receptor α (ERα) and interleukin 6 (IL6), and inflammation of the eggshell gland accompanied by significantly increased expression of complement C3 and pro-inflammatory cytokine tumor necrosis factor α (TNFα) (P < 0.05). In addition, the ultrastructure of the eggshell showed that dietary supplementation with 7.5 mg/kg Cd increased the palisade layer and total thickness of the shell, but with the increase in dietary Cd supplementation (30 and 60 mg/kg) the thickness of the palisade layer and mammillary layer decreased significantly (P < 0.05), and the outer surface of the eggshell became rougher. Correspondingly, the expression of calbindin 1 (CALB1), ovocalyxin-32 (OCX-32), ovocalyxin-36 (OCX-36), osteopontin (SPP1), and ovocledidin-17 (OC-17) decreased significantly (P < 0.05) with increasing dietary Cd supplementation. Conclusively, the present study demonstrates that dietary supplementation with Cd negatively affects laying performance, egg quality, and eggshell deposition by disturbing the metabolism of eggshell glands in laying hens but has a positive effect on egg quality at low doses.
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Affiliation(s)
- Mingkun Zhu
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
| | - Huaiyu Li
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
| | - Liping Miao
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
| | - Lanlan Li
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
| | - Xinyang Dong
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
| | - Xiaoting Zou
- Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
- Key Laboratory of Animal Nutrition and Feed Science in East China, Ministry of Agriculture, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, College of Animal Sciences, Zhejiang University, Hangzhou, P.R. China
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26
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Lead, Mercury and Cadmium in Fish and Shellfish from the Indian Ocean and Red Sea (African Countries): Public Health Challenges. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2020. [DOI: 10.3390/jmse8050344] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The main aim of this review was to assess the incidence of Pb, Hg and Cd in seafood from African countries on the Indian and the Red Sea coasts and the level of their monitoring and control, where the direct consumption of seafood without quality control are frequently due to the poverty in many African countries. Some seafood from African Indian and the Red Sea coasts such as mollusks and fishes have presented Cd, Pb and Hg concentrations higher than permitted limit by FAOUN/EU regulations, indicating a possible threat to public health. Thus, the operationalization of the heavy metals (HM) monitoring and control is strongly recommended since these countries have laboratories with minimal conditions for HM analysis.
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27
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de Alkimin GD, Fracácio R. Analysis of vitellogenin by histochemical method as an indicator of estrogenic effect in male Danio rerio exposed to metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:17789-17793. [PMID: 32162226 DOI: 10.1007/s11356-020-08302-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 03/02/2020] [Indexed: 06/10/2023]
Abstract
Several chemicals present in the aquatic environment have the ability to alter the endocrine system of aquatic organisms, including the metals cadmium (Cd) and zinc (Zn). In males, a tool to analyze this effect is the vitellogenin (VTG) detection, a protein with defined function in the yolk production and subsequent aid to embryo-larval development. This protein is produced just by females and can be detected by simple and cheap methods such as histochemical method. Thus, this study aimed to analyze the capacity of Cd and Zn to induce VTG production in Danio rerio males and determine whether the histochemical labeling method is efficient to study estrogenic effects in this species. For this, D. rerio adult males were exposed chronically (21 days) to 0.25 and 1 μg/L of Cd and 120 and 180 μg/L of Zn, values allowed by the Brazilian and American legislation to aquatic life protection. After which, the organisms were submitted to a histological process as preparation to liver VTG marking by histochemical method and subsequent qualitative analysis of this protein in zebrafish's liver. After analyzes, it was possible observed that Cd and Zn are capable of inducing VTG production in D. rerio males and that the histochemistry method is efficient for detection of estrogenic effects in this species.
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Affiliation(s)
- Gilberto Dias de Alkimin
- Department of Biology, Aveiro University, 3810-193, Aveiro, Portugal.
- Centre for Environmental and Marine Studies (CESAM), Campus de Santiago, Universidade de Aveiro, 3810-193, Aveiro, Portugal.
| | - Renata Fracácio
- Institute of Science and Technology of Sorocaba, UNESP, Sorocaba, São Paulo, 18087-180, Brazil
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28
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Ashrap P, Watkins DJ, Mukherjee B, Boss J, Richards MJ, Rosario Z, Vélez-Vega CM, Alshawabkeh A, Cordero JF, Meeker JD. Maternal blood metal and metalloid concentrations in association with birth outcomes in Northern Puerto Rico. ENVIRONMENT INTERNATIONAL 2020; 138:105606. [PMID: 32179314 PMCID: PMC7198231 DOI: 10.1016/j.envint.2020.105606] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/18/2020] [Accepted: 02/22/2020] [Indexed: 05/19/2023]
Abstract
BACKGROUND In previous studies, exposures to heavy metals such as Pb and Cd have been associated with adverse birth outcomes; however, knowledge on effects at low levels of exposure and of other elements remain limited. METHOD We examined individual and mixture effects of metals and metalloids on birth outcomes among 812 pregnant women in the Puerto Rico Testsite for Exploring Contamination Threats (PROTECT) cohort. We measured 16 essential and non-essential metal(loid)s in maternal blood collected at 16-20 and 24-28 weeks gestation. We used linear and logistic regression to independently examine associations between geometric mean (GM) concentrations of each metal across visits and gestational age, birthweight z-scores, preterm birth, small for gestational age (SGA), and large for gestational age (LGA). We evaluated effect modification with infant sex*metal interaction terms. To identify critical windows of susceptibility, birth outcomes were regressed on visit-specific metal concentrations. Furthermore, average metal concentrations were divided into tertiles to examine the potential for non-linear relationships. We used elastic net (ENET) regularization to construct Environmental Risk Score (ERS) as a metal risk score and Bayesian Kernel Machine Regression (BKMR) to identify individual metals most critical to each outcome, accounting for correlated exposures. RESULTS In adjusted models, an interquartile range (IQR) increase in GM lead (Pb) was associated with 1.63 higher odds of preterm birth (95%CI = 1.17, 2.28) and 2 days shorter gestational age (95% CI = -3.1, -0.5). Manganese (Mn) and zinc (Zn) were also associated with higher odds of preterm birth and shorter gestational age; the associations were strongest among the highest tertile for Mn and among females for Zn. Mercury (Hg) was associated with higher risk of preterm birth at the later window of pregnancy. Ni measured later in pregnancy was associated with lower odds of SGA. ENET and BKMR models selected similar metals as "important" predictors of birth outcomes. The association between ERS and preterm birth was assessed and the third tertile of ERS was significantly associated with an elevated odds ratio of 2.13 (95% CI = 1.12, 5.49) for preterm birth compared to the first tertile. CONCLUSION As the PROTECT cohort has lower Pb concentrations (GM = 0.33 μg/dL) compared to the mainland US, our findings suggest that low-level prenatal lead exposure, as well as elevated Mn and Zn exposure, may adversely affect birth outcomes. Improved understanding on environmental factors contributing to preterm birth, together with sustainable technologies to remove contamination, will have a direct impact in Puerto Rico and elsewhere.
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Affiliation(s)
- Pahriya Ashrap
- University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, United States
| | - Deborah J Watkins
- University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, United States
| | - Bhramar Mukherjee
- University of Michigan School of Public Health, Department of Biostatistics, Ann Arbor, MI, United States
| | - Jonathan Boss
- University of Michigan School of Public Health, Department of Biostatistics, Ann Arbor, MI, United States
| | | | - Zaira Rosario
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, GA, United States
| | - Carmen M Vélez-Vega
- University of Puerto Rico Graduate School of Public Health, UPR Medical Sciences Campus, San Juan, Puerto Rico, United States
| | - Akram Alshawabkeh
- College of Engineering, Northeastern University, Boston, MA, United States
| | - José F Cordero
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, GA, United States
| | - John D Meeker
- University of Michigan School of Public Health, Department of Environmental Health Sciences, Ann Arbor, MI, United States.
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29
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Tao C, Pei Y, Zhang L, Zhang Y. Microbial communities respond to microenvironments in lungs of mice under simulated exposure to cadmium aerosols. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136300. [PMID: 31923672 DOI: 10.1016/j.scitotenv.2019.136300] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/20/2019] [Accepted: 12/21/2019] [Indexed: 06/10/2023]
Abstract
Inhalable pollutants are inducing factors of lung diseases and have been widely studied. Previous studies described imbalances in pulmonary microbial communities and representatively predominant microorganisms in clinical specimens of individuals with lung diseases. However, the direct effect of inhalable pollutants on pulmonary microorganisms has not been determined to date. Cadmium is a common inhalable pollutant from manufacturing activities, and its effect on pulmonary microorganisms was investigated in this study. Such techniques as optical respiratory plethysmography, high-throughput pulmonary histological assessment and differential centrifugation were used to characterize pulmonary microenvironments, and high-throughput sequencing was used to analyze pulmonary microbial diversity. We found variations in pulmonary microenvironmental factors, such as air supply level, nutrition and inflammatory stress. Under inhalable cadmium exposure at different doses, pulmonary microorganisms were differentially subjected and sensitive to various microenvironmental stresses (e.g., inflammation, pH, ventilation, nutrition and related changes of lung tissue structure) and might participate in microenvironmental remodeling, such as pneumonia and pulmonary fibrosis. Inflammatory stress and Lactobacillus were the main microenvironmental factor and susceptible microorganism, respectively. The various pulmonary microenvironments influenced the metabolisms of pulmonary microbial communities, presenting differences in microbial collinearities, gene function levels and metabolic pathway levels among groups.
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Affiliation(s)
- Chen Tao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yaxin Pei
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Lan Zhang
- Gansu Provincial Centre for Disease Control and Prevention, Lanzhou 730000, China
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
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30
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Unsal V, Dalkıran T, Çiçek M, Kölükçü E. The Role of Natural Antioxidants Against Reactive Oxygen Species Produced by Cadmium Toxicity: A Review. Adv Pharm Bull 2020; 10:184-202. [PMID: 32373487 PMCID: PMC7191230 DOI: 10.34172/apb.2020.023] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 09/24/2019] [Accepted: 10/10/2019] [Indexed: 12/12/2022] Open
Abstract
Cadmium (Cd) is a significant ecotoxic heavy metal that adversely affects all biological processes of humans, animals and plants. Exposure to acute and chronic Cd damages many organs in humans and animals (e.g. lung, liver, brain, kidney, and testes). In humans, the Cd concentration at birth is zero, but because the biological half-life is long (about 30 years in humans), the concentration increases with age. The industrial developments of the last century have significantly increased the use of this metal. Especially in developing countries, this consumption is higher. Oxidative stress is the imbalance between antioxidants and oxidants. Cd increases reactive oxygen species (ROS) production and causes oxidative stress. Excess cellular levels of ROS cause damage to proteins, nucleic acids, lipids, membranes and organelles. This damage has been associated with various diseases. These include cancer, hypertension, ischemia/perfusion, cardiovascular diseases, chronic obstructive pulmonary disease, diabetes, insulin resistance, acute respiratory distress syndrome, idiopathic pulmonary fibrosis, asthma, skin diseases, chronic kidney disease, eye diseases, neurodegenerative diseases (amyotrophic lateral sclerosis, Parkinson's disease, Alzheimer's disease, and Huntington disease). Natural antioxidants are popular drugs that are used by the majority of people and have few side effects. Natural antioxidants play an important role in reducing free radicals caused by Cd toxicity. Our goal in this review is to establish the relationship between Cd and oxidative stress and to discuss the role of natural antioxidants in reducing Cd toxicity.
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Affiliation(s)
- Velid Unsal
- Faculty of Health Sciences and Central Research Laboratory, Mardin Artuklu University, Mardin, Turkey
| | - Tahir Dalkıran
- Department of Pediatric Intensive Care, Necip Fazıl City Hospital, 46030, Kahramanmaras, Turkey
| | - Mustafa Çiçek
- Department of Anatomy, Faculty of Medicine, Kahramanmaraş Sütçü imam University, Kahramanmaras, Turkey
| | - Engin Kölükçü
- Department of Urology, Faculty of Medicine, Gaziosmanpasa University,Tokat, Turkey
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Hirao-Suzuki M, Takeda S, Kodama Y, Takiguchi M, Toda A, Ohara M. Metalloestrogenic effects of cadmium are absent in long-term estrogen-deprived MCF-7 cells: Evidence for the involvement of constitutively activated estrogen receptor α and very low expression of G protein-coupled estrogen receptor 1. Toxicol Lett 2020; 319:22-30. [DOI: 10.1016/j.toxlet.2019.10.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 10/17/2019] [Accepted: 10/22/2019] [Indexed: 02/06/2023]
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O’Brien KM, White AJ, Jackson BP, Karagas MR, Sandler DP, Weinberg CR. Toenail-Based Metal Concentrations and Young-Onset Breast Cancer. Am J Epidemiol 2019; 188:34-43. [PMID: 32242893 DOI: 10.1093/aje/kwaa035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 12/24/2022] Open
Abstract
Several metals have carcinogenic properties, but their associations with breast cancer are not established. We studied cadmium, a metalloestrogen, and 9 other metals-arsenic, cobalt, chromium, copper, mercury, molybdenum, lead, tin, and vanadium--in relation to young-onset breast cancer (diagnosis age <50 years), which tends to be more aggressive than and have a different risk profile from later-onset disease. Recent metal exposure was measured by assessing element concentrations, via inductively coupled plasma mass spectrometry, in toenail clippings of 1,217 disease-discordant sister pairs in the US-based Sister (2003-2009) and Two Sister (2008-2010) studies. Conditional logistic regression was used to calculate odds ratios and 95% confidence intervals. After correcting for differential calendar time of sample collection, no statistically significant associations were observed between any metals and breast cancer. Vanadium had the largest odds ratio (for fourth vs. first quartile, odds ratio = 1.54, 95% confidence interval: 0.75, 3.16; P for trend = 0.21). The association between cadmium and young-onset breast cancer was near null, with no evidence of a dose-response relationship (for fourth vs. first quartile, odds ratio = 0.95, 95% confidence interval: 0.64, 1.43; P for trend = 0.64). Positive associations between urinary cadmium concentrations and breast cancer have been reported in case-control studies, but we observed no such association between young-onset breast cancer and toenail concentrations of any assessed metals.
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Affiliation(s)
- Katie M O’Brien
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Alexandra J White
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire
| | - Margaret R Karagas
- Department of Epidemiology and Children’s Environmental Health and Disease Prevention Research Center at Dartmouth, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | - Dale P Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Clarice R Weinberg
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
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Ashrap P, Sánchez BN, Téllez-Rojo MM, Basu N, Tamayo-Ortiz M, Peterson KE, Meeker JD, Watkins DJ. In utero and peripubertal metals exposure in relation to reproductive hormones and sexual maturation and progression among girls in Mexico City. ENVIRONMENTAL RESEARCH 2019; 177:108630. [PMID: 31421446 PMCID: PMC6734930 DOI: 10.1016/j.envres.2019.108630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/23/2019] [Accepted: 08/04/2019] [Indexed: 05/08/2023]
Abstract
There is increasing evidence that several metals are endocrine disrupting chemicals (EDCs). In utero development and adolescence are critical windows of susceptibility to EDC exposure. With the exception of a few heavy metals, few human studies have evaluated the impact of metal exposure on pubertal development. Our aim was to investigate measures of in utero and peripubertal metal exposure in relation to reproductive hormone levels and sexual maturation and progression among girls from the Early Life Exposure in Mexico to Environmental Toxicants (ELEMENT) cohorts. We measured urinary concentrations of aluminum (Al), arsenic (As), barium (Ba), cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), antimony (Sb), selenium (Se), and zinc (Zn) in samples collected from women during their third trimester of pregnancy and from their female children at 8-13 years (n = 132). We measured serum testosterone, estradiol, dehydroepiandrosterone sulfate (DHEA-S), inhibin B, and sex hormone-binding globulin (SHBG) at age 8-13, and assessed Tanner stages for sexual maturation (breast, pubic hair development, and menarche status), at two time points (8-13, 14-18 years). We used linear regression to independently examine in utero and peripubertal metal concentrations as predictors of peripubertal hormones. In a longitudinal analysis using generalized estimation equations, we evaluated Tanner stage and menarche progression in relation to individual in utero and peripubertal metal concentrations. We found that higher in utero Zn was associated with increased inhibin B. Several metals at 8-13 years were associated with higher DHEA-S and estradiol, while Ni was positively but Cu was negatively associated with testosterone. In utero Ni, Al, and Cd were associated with slower progression of breast development after adjustment for child age and BMI z-score. For example, an IQR increase in in utero Al exposure was associated with 0.82 times lower odds of progressing to a higher Tanner stage for breast development per year (95% CI: 0.68, 0.99). Peripubertal concentrations of Ba and Al were also associated with being at a higher pubic hair Tanner stage and menarche at 8-13, but lower odds of progressing to the next stage at 14-18 years. We used Bayesian kernel machine regression (BKMR) to model the joint effect of multiple metals while accounting for correlated exposures, as well as potential non-linear relationships between metals and outcomes of interest, which yielded results similar to individual analyses. These findings suggest that female reproductive development may be vulnerable to the effects of metal exposure, and using both Tanner stages and hormone levels may provide clues about underlying mechanisms in two sensitive periods of development.
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Affiliation(s)
- Pahriya Ashrap
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, United States
| | - Brisa N Sánchez
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI, United States
| | - Martha M Téllez-Rojo
- Center for Nutrition and Health Research, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico
| | - Niladri Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada
| | - Marcela Tamayo-Ortiz
- Center for Nutrition and Health Research, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico; Mexican Council for Science and Technology, Mexico City, Mexico
| | - Karen E Peterson
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, United States
| | - John D Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, United States
| | - Deborah J Watkins
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, United States.
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Tao C, Zhao X, Gao K, Ji W, Zhang Y. Thoracoabdominal respiratory disorder induced by cadmium aerosol and analyzed with a new machine vision model in vivo. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 683:668-680. [PMID: 31150887 DOI: 10.1016/j.scitotenv.2019.05.146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
Inhalable environmental pollutants induce pulmonary malfunction, which alters thoracoabdominal respiratory conditions. Traditional methods of recording pressure differences or existing machine vision analyses for detecting respiratory abnormalities are not suitable for synchronous thoracic and abdominal respiratory detections. The present study provides a new method that combines a model of thoracoabdominal localization and distribution based on respiratory physiological characteristics and a machine vision analysis on respiratory conditions in mice exposed to aqueous aerosol containing cadmium with classical symptoms. Thoracoabdominal respirations of mice were similar to male humans based on thoracic and abdominal composite respiration and the primarily presented abdominal respiration. Under environmental inhalable cadmium doses (1, 3, 5 mM CdCl2 in solution respectively atomized to be 112.41, 337.23, 562.05 μg/g Cd/Aerosol), the pathological thoracoabdominal respirations of mice showed that abdominal respiration contributed more to respiratory compensation and presented greater adaptive adjustments and more obvious fluctuations during lung injury than thoracic respiration, which suggests that toxic aerosol from a high-risk work environment quickly induces discernible respiratory clinical manifestations in occupational groups, as a warning for health, and abdominal obesity is unfavorable for male respiratory compensation. The respiratory abnormality shown in machine vision analysis was verified in pulmonary structural changes and hypoxia stress. Conclusively, the present method may be used to test the effects of aerosols on respiratory state and provides new prospects for toxicity determinations and risk evaluations of aerosols in the respiratory system in vivo.
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Affiliation(s)
- Chen Tao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xuejing Zhao
- School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China
| | - Ke Gao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Weihong Ji
- Institute of Natural and Mathematical Sciences, Massey University, Albany 0745, Auckland, New Zealand
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
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Bloomfield M, Louie MC. Chronic cadmium exposure decreases the dependency of MCF7 breast cancer cells on ERα. Sci Rep 2019; 9:12135. [PMID: 31431634 PMCID: PMC6702212 DOI: 10.1038/s41598-019-46912-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 07/05/2019] [Indexed: 01/14/2023] Open
Abstract
Cadmium is an environmental contaminant that can activate estrogen receptor alpha (ERα) and contribute to the development and progression of breast cancer. Our lab previously demonstrated that chronic cadmium exposure alters the expression of several ERα-responsive genes and increases the malignancy of breast cancer cells. Although these studies support cadmium's function as a hormone disrupter, the role of ERα in cadmium-induced breast cancer progression remains unclear. To address this, we modulated the expression of ERα and found that while the loss of ERα significantly impaired cancer cell growth, migration, invasion and anchorage-independent growth in both MCF7 and MCF7-Cd cells, cadmium-exposed cells retained a significant advantage in cell growth, migration, and invasion, and partially circumvented the loss of ERα. ERα knockout in MCF7 and MCF7-Cd cells significantly reduced the expression of classical ERα-regulated genes, while non-classical ERα-regulated genes were less impacted by the loss of ERα in MCF7-Cd cells. This is the first study to show that chronic cadmium exposure, even at low levels, can increase the malignancy of breast cancer cells by decreasing their dependency on ERα and increasing the adaptability of the cancer cells.
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Affiliation(s)
- Mathew Bloomfield
- Department of Natural Sciences and Mathematics, Dominican University of California, 50 Acacia Avenue, San Rafael, CA, 94901, USA
| | - Maggie C Louie
- Department of Natural Sciences and Mathematics, Dominican University of California, 50 Acacia Avenue, San Rafael, CA, 94901, USA.
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Terry MB, Michels KB, Brody JG, Byrne C, Chen S, Jerry DJ, Malecki KMC, Martin MB, Miller RL, Neuhausen SL, Silk K, Trentham-Dietz A. Environmental exposures during windows of susceptibility for breast cancer: a framework for prevention research. Breast Cancer Res 2019; 21:96. [PMID: 31429809 PMCID: PMC6701090 DOI: 10.1186/s13058-019-1168-2] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background The long time from exposure to potentially harmful chemicals until breast cancer occurrence poses challenges for designing etiologic studies and for implementing successful prevention programs. Growing evidence from animal and human studies indicates that distinct time periods of heightened susceptibility to endocrine disruptors exist throughout the life course. The influence of environmental chemicals on breast cancer risk may be greater during several windows of susceptibility (WOS) in a woman’s life, including prenatal development, puberty, pregnancy, and the menopausal transition. These time windows are considered as specific periods of susceptibility for breast cancer because significant structural and functional changes occur in the mammary gland, as well as alterations in the mammary micro-environment and hormone signaling that may influence risk. Breast cancer research focused on these breast cancer WOS will accelerate understanding of disease etiology and prevention. Main text Despite the plausible heightened mechanistic influences of environmental chemicals on breast cancer risk during time periods of change in the mammary gland’s structure and function, most human studies of environmental chemicals are not focused on specific WOS. This article reviews studies conducted over the past few decades that have specifically addressed the effect of environmental chemicals and metals on breast cancer risk during at least one of these WOS. In addition to summarizing the broader evidence-base specific to WOS, we include discussion of the NIH-funded Breast Cancer and the Environment Research Program (BCERP) which included population-based and basic science research focused on specific WOS to evaluate associations between breast cancer risk and particular classes of endocrine-disrupting chemicals—including polycyclic aromatic hydrocarbons, perfluorinated compounds, polybrominated diphenyl ethers, and phenols—and metals. We outline ways in which ongoing transdisciplinary BCERP projects incorporate animal research and human epidemiologic studies in close partnership with community organizations and communication scientists to identify research priorities and effectively translate evidence-based findings to the public and policy makers. Conclusions An integrative model of breast cancer research is needed to determine the impact and mechanisms of action of endocrine disruptors at different WOS. By focusing on environmental chemical exposure during specific WOS, scientists and their community partners may identify when prevention efforts are likely to be most effective.
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Affiliation(s)
- Mary Beth Terry
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 1611, New York, NY, 10032, USA
| | - Karin B Michels
- Department of Epidemiology, Fielding School of Public Health, University of California, 650 Charles E. Young Drive South, CHS 71-254, Los Angeles, CA, 90095, USA
| | | | - Celia Byrne
- Department of Preventive Medicine and Biostatistics, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road A-1039F, Bethesda, MD, 20814, USA
| | - Shiuan Chen
- Department of Cancer Biology, Beckman Research Institute of City of Hope, 1450 E. Duarte Road, Duarte, CA, 91010, USA
| | - D Joseph Jerry
- Pioneer Valley Life Sciences Institute and Department of Veterinary & Animal Sciences, University of Massachusetts Amherst, 661 North Pleasant St., Amherst, MA, 01003, USA
| | - Kristen M C Malecki
- Department of Population Health Sciences and the Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, 610 Walnut St., WARF Room 605, Madison, WI, 53726, USA
| | - Mary Beth Martin
- Departments of Oncology and Biochemistry & Molecular Biology, Georgetown University Medical Center, E411 New Research Building, Washington, DC, 20057, USA
| | - Rachel L Miller
- Departments of Medicine, Pediatrics, Environmental Health Sciences; Vagelos College of Physicians and Surgeons, Mailman School of Public Health, Columbia University, PH8E-101B, 630 W. 168th St, New York, NY, 10032, USA
| | - Susan L Neuhausen
- Department of Population Sciences, Beckman Research Institute of City of Hope, 1450 E. Duarte Road, 1500 E. Duarte Road, Duarte, CA, 91010, USA
| | - Kami Silk
- Department of Communication, University of Delaware, 250 Pearson Hall, 125 Academy St, Newark, DE, 19716, USA
| | - Amy Trentham-Dietz
- Department of Population Health Sciences and Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, 610 Walnut St., WARF Room 307, Madison, WI, 53726, USA.
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Cadmium Exposure and Risk of Breast Cancer by Histological and Tumor Receptor Subtype in White Caucasian Women: A Hospital-Based Case-Control Study. Int J Mol Sci 2019; 20:ijms20123029. [PMID: 31234310 PMCID: PMC6628557 DOI: 10.3390/ijms20123029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 12/28/2022] Open
Abstract
As the majority of experimental studies suggest cadmium being metalloestrogen, we examined cadmium/breast cancer (BC) association by histological and tumor receptor subtype in 509 invasive BC patients and 1170 controls. Urinary cadmium was determined by atomic absorption spectrometry, and categorized using tertiles of its distribution in the controls: <0.18, 0.18–0.33, >0.33 kg × 10−9/kg × 10−3 creatinine. Relative to the lowest category of urinary cadmium adjusted odds ratio (OR) of ductal BC was 1.18 (95% confidence interval (CI): 0.89–1.58) in the intermediate and 1.53 (95% CI: 1.15–2.04) in the highest category. There was a significant association for hormone receptor-positive ductal BC: ORs per category increase were 1.34 (95% CI: 1.14–1.59) for estrogen receptor-positive (ER+), 1.33 (95% CI: 1.09–1.61) for progesterone receptor-positive (PR+) and 1.35 (95% CI: 1.11–1.65) for ER+/PR+ BC. We found a significant association between cadmium and human epidermal growth factor receptor 2-negative (HER2−) ductal BC. The strongest association with cadmium was for ER+/PR+/HER2− ductal BC. The associations between cadmium and lobular BC with hormone receptor-positive and HER2− were positive but insignificant. There was no evidence that the associations with cadmium differed for cancers with different tumor histology (p-heterogeneity > 0.05). This study provides evidence that urinary cadmium is associated with the risk of hormone receptor-positive and HER2− breast cancer independent of tumor histology.
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Fittipaldi S, Bimonte VM, Soricelli A, Aversa A, Lenzi A, Greco EA, Migliaccio S. Cadmium exposure alters steroid receptors and proinflammatory cytokine levels in endothelial cells in vitro: a potential mechanism of endocrine disruptor atherogenic effect. J Endocrinol Invest 2019; 42:727-739. [PMID: 30478740 DOI: 10.1007/s40618-018-0982-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 11/13/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Cadmium (Cd) is a widespread environmental pollutant that causes alterations in human health acting as endocrine disruptor. Recent data suggest that cardiovascular system might be a contamination target tissue, since Cd is found in atheromatic plaques. Thus, the purpose of this study was to evaluate the consequence of Cd exposure of endothelial cells in vitro to evaluate detrimental effect in vascular system by a potential sex-steroid hormone receptor-dependent mechanism(s). METHODS To this aim, Human Umbilical Vein Endothelial Cells (HUVECs) were cultured and exposed to several concentrations of cadmium chloride (CdCl2) for different interval times. RESULTS CdCl2 exposure of HUVECs induced a significant increase of ERβ and Cyp19a1 at both mRNA and protein levels, while a drastic dose-dependent decrease of AR expression level was observed after 24 h of exposure. On the contrary, an increase of PhARser308 as well as a reduction of PhGSK-3βser9 and PhAKTser473 was detected after 1 h treatment. This effect was consistently reduced by GSK inhibition. Furthermore, CdCl2 abolished DHT-induced cell proliferation in HUVECs suggesting an antagonist-like effect of Cd on AR-mediated signaling. Remarkable, after 6 h CdCl2-treatment, a relevant increase in TNF-α, IL-6 and IL-8 mRNA was observed and this effect was blocked by the presence of an ERβ-selective antagonist. Moreover, Cd-induced TxR1 overexpression, likely, correlated with the activation of p38 MAPK/NF-κB pathway. CONCLUSION In conclusion, our study demonstrates for the first time that Cd alters sex-steroid hormone receptors level and activity likely affecting intracellular signaling linked to a proinflammatory state in endothelial cells. This alteration might possibly lead to endothelial cell injury and vascular dysfunction and could be a mechanism of gender-specific atherogenic damages induced by endocrine disruptors and, thus, induce atherogenic events with increased risk of cardiovascular diseases in individuals exposed to this endocrine disruptor.
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Affiliation(s)
| | - V M Bimonte
- Department of Movement, Human and Health Sciences, Section of Health Sciences, "Foro Italico" University of Rome, Largo Lauro De Bosis 6, 00195, Rome, Italy
- Department of Experimental and Clinical Medicine, Magna Græcia University, Catanzaro, Italy
| | - A Soricelli
- IRCCS SDN, Naples, Italy
- Department of Motor Sciences and Healthiness, University of Naples Parthenope, Naples, Italy
| | - A Aversa
- Department of Experimental and Clinical Medicine, Magna Græcia University, Catanzaro, Italy
| | - A Lenzi
- Department of Experimental Medicine, Section of Medical Pathophysiology, Endocrinology and Nutrition, "Sapienza" University of Rome, Rome, Italy
| | - E A Greco
- Department of Experimental Medicine, Section of Medical Pathophysiology, Endocrinology and Nutrition, "Sapienza" University of Rome, Rome, Italy
| | - S Migliaccio
- Department of Movement, Human and Health Sciences, Section of Health Sciences, "Foro Italico" University of Rome, Largo Lauro De Bosis 6, 00195, Rome, Italy.
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Cao J, Wang G, Wang T, Chen J, Wenjing G, Wu P, He X, Xie L. Copper caused reproductive endocrine disruption in zebrafish (Danio rerio). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 211:124-136. [PMID: 30965180 DOI: 10.1016/j.aquatox.2019.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/27/2019] [Accepted: 04/02/2019] [Indexed: 06/09/2023]
Abstract
Cu in surface waters has been demonstrated to affect aquatic animals at ecologically relevant concentrations. However, its effects on reproductive endocrine system and the underlying toxicological mechanisms are largely unknown. In this study, zebrafish (Danio rerio) were exposed to 0, 10, 20, 40 μg/L of Cu for 30 days. Growth, gonad histopathology, the hormone levels and the transcriptional profiles of genes in the hypothalamic-pituitary-gonadal (HPG) axis in both sexes were examined. The results indicated that body weight was significantly reduced, the gonadal development was affected, and the levels of E2, T and 11-KT were remarkably disturbed in Cu-exposed fish. Moreover, the expression profiles of steroidogenesis-related genes in gonad (3βhsd, 17βhsd, cyp11a1, cyp17, cyp19a, lhr, fshr, hmgra and star) and in brains (ar, cyp19b, erα, er2β, lhβ, fshβ, gnrh2, gnrh3, gnrhr1, gnrh2 and gnrh4) displayed alterations after exposure to Cu. These results demonstrated that Cu could suppress the growth of zebrafish and significantly affect the reproductive biology in both sexes by damaging the structure of the gonads, altering the steroid hormone levels and the expressions of endocrine-related genes in HPG of zebrafish. This study suggests that Cu adversely affects the reproductive endocrine system in zebrafish and could pose a potential threat to fish populations inhabiting Cu-contaminated waters.
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Affiliation(s)
- Jinling Cao
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China.
| | - Guodong Wang
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China; School of Biotechnology and Food Engineering, Anyang Institute of Technology, Anyang, Henan, 455000, China.
| | - Tianyu Wang
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China.
| | - Jianjie Chen
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China.
| | - Guo Wenjing
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China.
| | - Panhong Wu
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China.
| | - Xinjin He
- State Key Laboratory of Ecological Animal Husbandry and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, 030801, China.
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou, 510006, China.
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40
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Grioni S, Agnoli C, Krogh V, Pala V, Rinaldi S, Vinceti M, Contiero P, Vescovi L, Malavolti M, Sieri S. Dietary cadmium and risk of breast cancer subtypes defined by hormone receptor status: A prospective cohort study. Int J Cancer 2019; 144:2153-2160. [PMID: 30515770 DOI: 10.1002/ijc.32039] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/23/2018] [Accepted: 11/21/2018] [Indexed: 02/03/2023]
Abstract
Diet is the primary source of cadmium-a proven Group 1 human carcinogen-for non-smokers. Observational studies investigating the effect of cadmium from food sources on breast cancer risk have produced inconsistent results. We examined the association between dietary cadmium and risk of breast cancer defined by estrogen receptor (ER), progesterone receptor (PR) and HER2 status, in 8924 women recruited to a prospective study between 1987 and 1992. Dietary cadmium intake was estimated using a semi-quantitative food frequency questionnaire at baseline. During a median of 22 years of follow-up, 451 incident cases of breast cancer were identified through the Varese Cancer Registry. Multivariable-adjusted hazard ratios (HRs) with 95% confidence intervals (CIs) for breast cancer and receptor-defined breast cancer subtypes were estimated for quintiles of dietary cadmium intake, adjusting for confounding factors. Mean dietary cadmium intake was 7.8 (standard deviation 1.4) μg/day. Women with highest quintile of cadmium intake had a greater risk of breast cancer (HR 1.54; 95% CI, 1.06-2.22; p trend = 0.028) than those with lowest quintile of intake. Women premenopausal at recruitment had HR = 1.73 (95% CI, 1.10-2.71, highest vs. lowest quintile); postmenopausal women had HR = 1.32 (95% CI, 1.05-1.66 for each standard deviation increase in cadmium). Cadmium-related risk of breast cancer did not vary with ER, PR or HER2 status (p-heterogeneity not significant). These findings support the hypothesis that dietary cadmium is a risk factor for breast cancer.
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Affiliation(s)
- Sara Grioni
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Claudia Agnoli
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Vittorio Krogh
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Valeria Pala
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Sabina Rinaldi
- International Agency for Research on Cancer, Lyon, France
| | - Marco Vinceti
- CREAGEN, Environmental, Genetic and Nutritional Epidemiology Research Center, Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - Paolo Contiero
- Environmental Epidemiology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Luciano Vescovi
- CREAGEN, Environmental, Genetic and Nutritional Epidemiology Research Center, Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Marcella Malavolti
- CREAGEN, Environmental, Genetic and Nutritional Epidemiology Research Center, Section of Public Health, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Sabina Sieri
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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41
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Tao C, Zhang Y, Gao K. Machine vision analysis on abnormal respiratory conditions of mice inhaling particles containing cadmium. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 170:600-610. [PMID: 30576895 DOI: 10.1016/j.ecoenv.2018.12.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 12/07/2018] [Accepted: 12/08/2018] [Indexed: 06/09/2023]
Abstract
Inhalable environmental toxicants can induce pulmonary malfunction resulting abnormal respiratory conditions. The traditional methods currently available to detect the respiratory condition of animals rely on differential pressure transducers and signal amplifiers. In comparison, current machine vision application requires little hardware. But it is unsuitable for respiratory condition tests of experimental animals reflecting respiratory toxicities of inhalable pollutants. In this study, we establish a new automatic method of machine vision analysis using a model that has mice inhaling aqueous aerosol with different concentrations of CdCl2 (0, 1, 3, 5 mM 2 h/day) for 7 days as simulant occupational exposure of inhalable Cd and analyze respiratory conditions such as respiratory rate, rhythm index, drive index and exchange index. Additionally, the models with different degrees of lung damage in mice are further tested and verified by the concentrations of cadmium accumulated in the lungs and the analyses on pulmonary porosity, fibrosis and inflammation. Machine vision analysis can identify the abnormal respiratory conditions of mice. Respiratory rate and rhythm index increase after exposure to cadmium. In the individuals with mild lung damage, respiratory drive index and exchange index in treatment group are higher than that in the control group, and in individuals with severe lung damage, these indices are similar to that of the control group. These abnormal respiratory conditions related to variable lung damage in mice demonstrate that the respiration is synchronously influenced by inhalable Cd and respiratory compensation according to normal physiological regulation, suggesting the present method is effective.
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Affiliation(s)
- Chen Tao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Ke Gao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
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42
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O’Brien KM, White AJ, Jackson BP, Karagas MR, Sandler DP, Weinberg CR. Toenail-Based Metal Concentrations and Young-Onset Breast Cancer. Am J Epidemiol 2019; 188:646-655. [PMID: 30608527 DOI: 10.1093/aje/kwy283] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 12/18/2018] [Accepted: 12/19/2018] [Indexed: 11/12/2022] Open
Abstract
Several metals have carcinogenic properties, but their associations with breast cancer are not established. We studied cadmium, a metalloestrogen, and 9 other metals-arsenic, cobalt, chromium, copper, mercury, molybdenum, lead, tin, and vanadium--in relation to young-onset breast cancer (diagnosis age <50 years), which tends to be more aggressive than and have a different risk profile from later-onset disease. Recent metal exposure was measured by assessing element concentrations, via inductively coupled plasma mass spectrometry, in toenail clippings of 1,217 disease-discordant sister pairs in the US-based Sister (2003-2009) and Two Sister (2008-2010) studies. Conditional logistic regression was used to calculate odds ratios and 95% confidence intervals. After correcting for differential calendar time of sample collection, no statistically significant associations were observed between any metals and breast cancer. Vanadium had the largest odds ratio (for fourth vs. first quartile, odds ratio = 1.36, 95% confidence interval: 0.84, 2.21; P for trend = 0.17). Cadmium was associated with a small increase in risk, with no evidence of a dose-response relationship (for fourth vs. first quartile, odds ratio = 1.15, 95% confidence interval: 0.82, 1.60; P for trend = 0.67). Positive associations between urinary cadmium concentrations and breast cancer have been reported in case-control studies, but we observed no such association between young-onset breast cancer and toenail concentrations of any assessed metals.
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Affiliation(s)
- Katie M O’Brien
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Alexandra J White
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, New Hampshire
| | - Margaret R Karagas
- Department of Epidemiology and Children’s Environmental Health and Disease Prevention Research Center at Dartmouth, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | - Dale P Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Clarice R Weinberg
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
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43
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Rosenfeld CS, Cooke PS. Endocrine disruption through membrane estrogen receptors and novel pathways leading to rapid toxicological and epigenetic effects. J Steroid Biochem Mol Biol 2019; 187:106-117. [PMID: 30465854 PMCID: PMC6370520 DOI: 10.1016/j.jsbmb.2018.11.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/31/2018] [Accepted: 11/18/2018] [Indexed: 01/08/2023]
Abstract
Estrogen binding to estrogen receptors (ESR) triggers signaling cascades within cells. Historically, a major emphasis has been characterizing estrogen-induced genomic actions resulting from binding to nuclear estrogen receptor 1 (nESR1). However, recent evidence indicates the first receptors estrogens encounter as they enter a cell, membrane ESR1 (mESR1), also play crucial roles. Membrane and nuclear ESR are derived from the same transcripts but the former are directed to the membrane via palmitoylation. Binding and activation of mESR1 leads to rapid fluctuations in cAMP and Ca+2 and stimulation of protein kinase pathways. Endocrine disrupting chemicals (EDC) that mimic 17β-estradiol can signal through mESR1 and elicit non-genomic effects. Most current EDC studies have focused on genomic actions via nESR1. However, increasing number of studies have begun to examine potential EDC effects mediated through mESR1, and some EDC might have higher potency for signaling through mESR1 than nESR1. The notion that such chemicals might also affect mESR1 signaling via palmitoylation and depalmitoylation pathways has also begun to gain currency. Recent development of transgenic mice that lack either mESR1 or nESR1, while retaining functional ESR1 in the other compartment, will allow more precise in vivo approaches to determine EDC effects through nESR1 and/or mESR1. It is increasingly becoming apparent in this quickly evolving field that EDC directly affect mESR and estrogen signaling, but such chemicals can also affect proportion of ESR reaching the membrane. Future EDC studies should be designed to consider the full range of effects through mESR alone and in combination with nESR.
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Affiliation(s)
- Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO, 65211, USA; Thompson Center for Autism and Neurobehavioral Disorders, Columbia, MO, 65211, USA.
| | - Paul S Cooke
- Department of Physiological Sciences, University of Florida, Gainesville, FL, 32610, USA.
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Stevenson MJ, Uyeda KS, Harder NHO, Heffern MC. Metal-dependent hormone function: the emerging interdisciplinary field of metalloendocrinology. Metallomics 2019; 11:85-110. [PMID: 30270362 PMCID: PMC10249669 DOI: 10.1039/c8mt00221e] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
For over 100 years, there has been an incredible amount of knowledge amassed concerning hormones in the endocrine system and their central role in human health. Hormones represent a diverse group of biomolecules that are released by glands, communicate signals to their target tissue, and are regulated by feedback loops to maintain organism health. Many disease states, such as diabetes and reproductive disorders, stem from misregulation or dysfunction of hormones. Increasing research is illuminating the intricate roles of metal ions in the endocrine system where they may act advantageously in concert with hormones or deleteriously catalyze hormone-associated disease states. As the critical role of metal ions in the endocrine system becomes more apparent, it is increasingly important to untangle the complex mechanisms underlying the connections between inorganic biochemistry and hormone function to understand and control endocrinological phenomena. This tutorial review harmonizes the interdisciplinary fields of endocrinology and inorganic chemistry in the newly-termed field of "metalloendocrinology". We describe examples linking metals to both normal and aberrant hormone function with a focus on highlighting insight to molecular mechanisms. Hormone activities related to both essential metal micronutrients, such as copper, iron, zinc, and calcium, and disruptive nonessential metals, such as lead and cadmium are discussed.
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Affiliation(s)
- Michael J Stevenson
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
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White AJ, O’Brien KM, Niehoff NM, Carroll R, Sandler DP. Metallic Air Pollutants and Breast Cancer Risk in a Nationwide Cohort Study. Epidemiology 2019; 30:20-28. [PMID: 30198937 PMCID: PMC6269205 DOI: 10.1097/ede.0000000000000917] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND Toxic metals show evidence of carcinogenic and estrogenic properties. However, little is known about the relationship between airborne metals and breast cancer. We evaluated the risk of breast cancer in relation to exposure to toxic metallic substances in air, individually and combined, in a US-wide cohort. METHODS Sister Study participants (n = 50,884), breast cancer-free women who had a sister with breast cancer were recruited, from 2003 to 2009. The 2005 Environmental Protection Agency National Air Toxic Assessment's census-tract estimates of metal concentrations in air (antimony, arsenic, cadmium, chromium, cobalt, lead, manganese, mercury, nickel, and selenium) were matched to participants' enrollment residence. We used Cox regression to estimate the association between quintiles of individual metals and breast cancer incidence and weighted quantile sum regression to model the association between the metal mixture and breast cancer. RESULTS A total of 2,587 breast cancer cases were diagnosed during follow-up (mean = 7.4 years). In individual chemical analyses comparing the highest to lowest quintiles, postmenopausal breast cancer risk was elevated for mercury (hazard ratio [HR] = 1.3, 95% confidence interval [CI], 1.1, 1.5), cadmium (HR = 1.1, 95% CI, 0.96, 1.3), and lead (HR = 1.1, 95% CI, 0.98, 1.3). The weighted quantile sum index was associated with postmenopausal breast cancer (odds ratio [OR] = 1.1, 95% CI, 1.0, 1.1). Consistent with the individual chemical analysis, the most highly weighted chemicals for predicting postmenopausal breast cancer risk were lead, cadmium, and mercury. Results were attenuated for overall breast cancer. CONCLUSIONS Higher levels of some airborne metals, specifically mercury, cadmium, and lead, were associated with a higher risk of postmenopausal breast cancer.
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Affiliation(s)
- Alexandra J. White
- Epidemiology Branch and National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
| | - Katie M. O’Brien
- Biostatistics Branch, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
| | - Nicole M. Niehoff
- Department of Epidemiology, University of North Carolina at Chapel Hill, NC, USA
| | - Rachel Carroll
- Biostatistics Branch, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
| | - Dale P. Sandler
- Epidemiology Branch and National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA
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Wu SM, Su CK, Shu LH. Effects of calcium and estrogen on the development of the ceratohyal cartilage in zebrafish (Danio rerio) larvae upon embryo and maternal cadmium exposure. Comp Biochem Physiol C Toxicol Pharmacol 2018; 213:47-54. [PMID: 30059766 DOI: 10.1016/j.cbpc.2018.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/12/2018] [Accepted: 07/26/2018] [Indexed: 11/16/2022]
Abstract
The present study is to investigate the reason why the ceratohyal cartilage (CH) angle of zebrafish larvae were larger compared to the control group after their female parents were treated with cadmium (F-Cd). However, the CH angle was smaller compared to the control group when embryos were directly exposed to Cd2+ for 72 h (D-Cd). Results showed that calcium contents of larvae were lower than the control, but the transporter isoforms trpv4 and trpv6 mRNA expressions were significantly increased upon D-Cd treatment. Furthermore, external Ca2+ added during D-Cd treatment reveals that the CH angles of larvae did not appear significantly different compared to the control. On the other hand, E2 (17β-estradiol) contents were higher around 1.9 folds in the ovaries of females; CH angle were over 25°, and Cd2+ contents were higher around 6 folds than the control group on larvae treated through F-Cd treatment; CH angles and E2 levels on larvae were higher than the control after the larvae were treated with 1.84 μM E2 (D-E2); Estradiol receptor (ER) isoforms ERβ1 and ERα mRNA expressions significantly increased when 0 hpf embryos were either treated with D-E2 or D-Cd. According to the results, we suggested that the CH angle of larvae become larger upon F-Cd treatment due to maternal Cd2+ inducing E2 levels. However, the CH angle of larvae appeared to be smaller compared to the control upon D-Cd treatment. We suggested that the CH angle decreased due to the decrease of Ca2+ contents upon Cd2+ exposure.
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Affiliation(s)
- Su-Mei Wu
- Department of Aquatic Biosciences, National Chiayi University, Chiayi 600, Taiwan.
| | - Chong-Kai Su
- Department of Aquatic Biosciences, National Chiayi University, Chiayi 600, Taiwan
| | - Li-Hsin Shu
- Department of Aquatic Biosciences, National Chiayi University, Chiayi 600, Taiwan
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Nasiadek M, Danilewicz M, Sitarek K, Świątkowska E, Daragó A, Stragierowicz J, Kilanowicz A. The effect of repeated cadmium oral exposure on the level of sex hormones, estrous cyclicity, and endometrium morphometry in female rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:28025-28038. [PMID: 30066076 PMCID: PMC6153670 DOI: 10.1007/s11356-018-2821-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/20/2018] [Indexed: 05/11/2023]
Abstract
Cadmium (Cd) is regarded as a potential endocrine disruptor. However, the exact mechanism by which this metal may interfere with the reproductive system has not yet been elucidated. The present study aimed to investigate the effect of subacute Cd oral administration at daily doses of 0.09, 1.8, and 4.5 mgCd/kg b.w. and the impact of Cd on sex hormones (estradiol (E2) and progesterone (P)) in the plasma and uterus, as well as on estrous cyclicity and histopathological changes in uterine and ovary in female rats after terminating the exposure and after a prolonged observation period (3 months). Moreover, Cd bioaccumulation in the uterine and brain tissue of rats was analyzed. The study revealed that oral Cd exposure induced changes in the plasma levels of steroid hormones: decrease in E2 and increase in P after the highest dose of Cd. Probably, for the first time, it was evidenced that circulation sex hormone disturbances in Cd-exposed rats caused irregular estrous cycle, persisting for 3 months after exposure termination; no alterations in these hormone levels in uterine tissue were noted. Cd did not induce estradiol-like hyperplasia of endometrium, but resulted in endometrial edema irrespective of the dose, and caused damage of the ovaries after the highest dose. In summary, subacute oral exposure of female rats to Cd may lead to long-term disturbances in reproductive system.
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Affiliation(s)
- Marzenna Nasiadek
- Department of Toxicology, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
| | - Marian Danilewicz
- Department of Pathology, Medical University of Lodz, Pomorska 251, 92-213 Lodz, Poland
| | - Krystyna Sitarek
- Department of Toxicology and Carcinogenesis, Nofer Institute of Occupational Medicine, sw. Teresy 8, 91-348 Lodz, Poland
| | - Ewa Świątkowska
- Research Institute Polish Mother’s Memorial Hospital, 93-338 Lodz, Poland
| | - Adam Daragó
- Department of Toxicology, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
| | - Joanna Stragierowicz
- Department of Toxicology, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
| | - Anna Kilanowicz
- Department of Toxicology, Faculty of Pharmacy, Medical University of Lodz, Muszynskiego 1, 90-151 Lodz, Poland
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Gaudet HM, Christensen E, Conn B, Morrow S, Cressey L, Benoit J. Methylmercury promotes breast cancer cell proliferation. Toxicol Rep 2018; 5:579-584. [PMID: 29868453 PMCID: PMC5984200 DOI: 10.1016/j.toxrep.2018.05.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 05/02/2018] [Accepted: 05/13/2018] [Indexed: 10/26/2022] Open
Abstract
CONTEXT Metalloestrogens are small ionic metals that activate the estrogen receptor (ER). Studies have shown that when metalloestrogens bind to the ER, there is an increase in transcription and expression of estrogen-regulated genes, which induces proliferation of estrogen-dependent breast cancer. Methylmercury (MeHg), a metalloestrogen, is present in the environment and is toxic at moderate to high concentrations. However, at lower concentrations MeHg may promote the proliferation of ER-positive breast cancers and protect cells against pro-apoptotic signals. OBJECTIVE To investigate the effects of MeHg treatment on breast cancer cells in vitro. MATERIALS AND METHODS MCF7 breast cancer cells were treated with concentrations of MeHg ranging from 1 nM to 100 mM. Hg analysis was used to quantify intracellular mercury concentrations. Cell proliferation and apoptosis were determined by cell counting and Annexin-V staining, respectively. RESULTS We defined a protocol that maximizes cellular exposure to mercury. Treatment of human ER-positive breast cancer cells with 1 nM MeHg promoted proliferation, while treatment with a concentration of 100 nM induced apoptosis. DISCUSSION AND CONCLUSIONS Clarifying the effects of MeHg on breast cancer will improve our understanding of how environmental toxins affect tumor progression and may lead to the development of future therapeutic strategies.
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Lappano R, Malaguarnera R, Belfiore A, Maggiolini M. Recent advances on the stimulatory effects of metals in breast cancer. Mol Cell Endocrinol 2017; 457:49-56. [PMID: 27765682 DOI: 10.1016/j.mce.2016.10.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 10/12/2016] [Accepted: 10/15/2016] [Indexed: 01/08/2023]
Abstract
Certain environmental chemicals may accumulate in human serum and tissues eliciting estrogenic and/or carcinogenic effects. Therefore, there is heightened interest in determining whether environmental chemicals may increase the risk for endocrine-related tumors like breast cancer. For instance, metals as cadmium, zinc, copper, iron, nickel and aluminum have been shown to mimic estrogen action. Moreover, the exposure to these chemicals has been reported to stimulate diverse malignancies including breast cancer, which is the most common tumor in women worldwide. In this review, we summarize the epidemiologic and experimental evidence regarding the association between the exposure to some trace elements and breast cancer risk. We also address recent insights on the molecular mechanisms involved by metals in breast tumorigenesis.
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Affiliation(s)
- Rosamaria Lappano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy.
| | - Roberta Malaguarnera
- Endocrinology, Department of Health Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Antonino Belfiore
- Endocrinology, Department of Health Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Marcello Maggiolini
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
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50
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Vella V, Malaguarnera R, Lappano R, Maggiolini M, Belfiore A. Recent views of heavy metals as possible risk factors and potential preventive and therapeutic agents in prostate cancer. Mol Cell Endocrinol 2017; 457:57-72. [PMID: 27773847 DOI: 10.1016/j.mce.2016.10.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/19/2016] [Accepted: 10/19/2016] [Indexed: 11/19/2022]
Abstract
Prostate cancer is the most common cancer in men in many industrialized countries. A role for androgens in prostate tumor progression is well recognized, while estrogens may cooperate with androgens in prostate carcinogenesis. The incidence of prostate cancer is highly variable in the different countries, suggesting an important role of environmental factors. Heavy metals are common environmental contaminants and some of them are confirmed or suspected human carcinogens. Some metals are endowed with estrogenic and/or androgenic activities and may play a role as cancer risk factors through this mechanism. Moreover, prostate cancer may present alterations in the intracellular balance of trace metals, such as zinc and copper, which are involved in several regulatory proteins. Herein, we review the possible role of environmental heavy metals and of metal-dyshomeostasis in prostate cancer development and promotion as well as the potential use of some metals in the prevention and therapy of prostate cancer.
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Affiliation(s)
- Veronica Vella
- School of Human and Social Science, Motor Sciences, University "Kore" of Enna, Enna, Italy
| | - Roberta Malaguarnera
- Endocrinology, Department of Health Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Rosamaria Lappano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | - Marcello Maggiolini
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | - Antonino Belfiore
- Endocrinology, Department of Health Sciences, University Magna Graecia of Catanzaro, Catanzaro, Italy.
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