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Premranjith P, King W, Ashley-Martin J, Borghese MM, Bouchard M, Foster W, Arbuckle TE, Velez MP. Maternal exposure to metals and time-to-pregnancy: The MIREC cohort study. BJOG 2024; 131:589-597. [PMID: 38239019 DOI: 10.1111/1471-0528.17759] [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: 07/01/2023] [Revised: 12/13/2023] [Accepted: 12/30/2023] [Indexed: 03/07/2024]
Abstract
OBJECTIVE To study the association between maternal exposure to arsenic, cadmium, lead, manganese and mercury, time-to-pregnancy (TTP) and infertility. DESIGN Pregnancy-based retrospective TTP cohort study. SETTING Hospitals and clinics from ten cities across Canada. POPULATION A total of 1784 pregnant women. METHODS Concentrations of arsenic, cadmium, lead, manganese and mercury were measured in maternal whole blood during the first trimester of pregnancy as a proxy of preconception exposure. Discrete-time Cox proportional hazards models generated fecundability odds ratios (FOR) for the association between metals and TTP. Logistic regression generated odds ratios (OR) for the association between metals and infertility. Models were adjusted for maternal age, pre-pregnancy body mass index, education, income, recruitment site and plasma lipids. MAIN OUTCOME MEASURES TTP was self-reported as the number of months of unprotected intercourse to become pregnant. Infertility was defined as TTP longer than 12 months. RESULTS A total of 1784 women were eligible for the analysis. Mean ± SD maternal age and gestational age at interview were 32.2 ± 5.0 years, and 11.6 ± 1.6 weeks, respectively. Exposure to arsenic, cadmium, manganese or mercury was not associated with TTP or infertility. Increments of one standard deviation of lead concentrations resulted in a shorter TTP (adjusted FOR 1.09, 95% CI 1.02-1.16); however, the association was not linear when exposure was modelled in tertiles. CONCLUSION Blood concentrations of metals at typical levels of exposure among Canadian pregnant women were not associated with TTP or infertility. Further studies are needed to assess the role of lead, if any, on TTP.
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Affiliation(s)
- Priya Premranjith
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Will King
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Jillian Ashley-Martin
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Michael M Borghese
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Maryse Bouchard
- Department of Environmental and Occupational Health, Université de Montréal, Montreal, Quebec, Canada
| | - Warren Foster
- Department of Obstetrics and Gynaecology, McMaster University, Hamilton, Ontario, Canada
| | - Tye E Arbuckle
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Maria P Velez
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
- Department of Obstetrics and Gynaecology, Queen's University, Kingston, Ontario, Canada
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Shan D, Lv Y, Zhao J, Zhang F, Xi H, Qiu H, Lv J, Chen H. Association between blood lead levels and unfavorable IVF outcomes: potential involvement of endoplasmic reticulum stress response in granulosa cells. J Assist Reprod Genet 2024; 41:947-956. [PMID: 38470551 PMCID: PMC11052936 DOI: 10.1007/s10815-024-03056-2] [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: 11/29/2023] [Accepted: 02/05/2024] [Indexed: 03/14/2024] Open
Abstract
PURPOSE To investigate the relationship between blood lead levels (BLLs) and IVF clinical outcomes in infertile females and to further explore the possible involvement of granulosa cell (GC) endoplasmic reticulum (ER) stress in the process. METHODS One hundred twenty-three infertile women undergoing IVF cycles were included in the current study. All participants were divided into three (low, medium, and high) groups determined by BLL tertiles. Gonadotropin releasing hormone (GnRH) agonist regimen for ovarian stimulation was used for all patients, with follicular fluids being collected on the day of oocyte retrieval. Lactate dehydrogenase (LDH) levels in follicular fluid and the endoplasmic reticulum stress-signaling pathway of granulosa cells (GCs) were examined. RESULTS The oocyte maturation rate and high-quality embryo rate on cleaved stage decreased significantly as BLL increased. For lead levels from low to high, live birth rate (68.29%, 56.10%, 39.02%; P=0.028) showed negative correlations with BLLs. Also, follicular fluid Pb level and LDH level was significantly higher in the high lead group versus the low group. Binomial regression analysis revealed significant negative correlation between BLLs and live birth rate (adjusted OR, 0.38; 95% CI, 0.15-0.95, P=0.038). Further analysis of the endoplasmic reticulum stress (ER stress) signaling pathway of GCs found that expressions of GRP78, total JNK, phosphorylated JNK, and CHOP increased and BCL-2 decreased with increasing BLLs. CONCLUSIONS BLLs are negatively associated with final clinical outcomes in IVF patients that may be related to increased ER stress response and GC apoptosis. Thus, reducing Pb exposure before IVF procedures may improve final success rates.
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Affiliation(s)
- Dan Shan
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Yanning Lv
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Junzhao Zhao
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Fan Zhang
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Haitao Xi
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Haifan Qiu
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Jieqiang Lv
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China.
| | - Haolin Chen
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China.
- Key Laboratory of Children Genitourinary Diseases of Wenzhou City, Department of Pediatric Urology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China.
- Department of Pharmacology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China.
- Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China.
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Kataba A, Yohannes YB, Nakata H, Yabe J, Toyomaki H, Muzandu K, Zyambo G, Ikenaka Y, Choongo K, Ishizuka M, Nakayama SMM. Association between Chronic Environmental Lead (Pb) Exposure and Cytokines in Males and Females of Reproductive Age from Kabwe, Zambia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20085596. [PMID: 37107878 PMCID: PMC10138795 DOI: 10.3390/ijerph20085596] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/14/2023] [Accepted: 04/18/2023] [Indexed: 05/10/2023]
Abstract
Lead (Pb) poisoning remains a great public health challenge globally known to induce a wide range of ailments in both children and adults. The current study investigated the association of chronic environmental Pb exposure and immunomodulatory cytokines tumor necrosis factor alpha (TNF-α) and interleukin-8 (IL-8) in adult males and females living in Kabwe, Zambia. The standard human cytokine/chemokine Milliplex assay was used to quantify plasma cytokines from four groups categorized as low (<10 μg/dL) and high (>10 μg/dL) blood lead level (BLL) groups, namely, low BLL female (n = 47; BLL = 3.76 μg/dL), low BLL Male (n = 43; BLL = 4.13 μg/dL), high BLL female (n = 21; BLL = 23.5 μg/dL), and high BLL male (n = 18; BLL = 23.7 μg/dL), respectively. The low BLL group was associated with increased TNF-α levels, and the high BLL group was associated with reduced TNF-α levels in female subjects. No associations between BLL and the levels of IL-8 and TNF-α cytokines were observed in either females or males, respectively. A negative correlation between BLL and TNF-α was found in female subjects, suggesting that an increase in BLL accompanied by a reduction in TNF-α. The reduced levels of circulating TNF-α in female subjects suggest that chronic Pb exposure could predispose females to immune and inflammation-related disorders than their male counterparts. Further studies are recommended to ascertain the impact of chronic Pb exposure on immunomodulatory cytokines, especially in females.
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Affiliation(s)
- Andrew Kataba
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan
- School of Veterinary Medicine, The University of Zambia, Lusaka P.O. Box 32379, Zambia
| | - Yared Beyene Yohannes
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan
- Department of Chemistry, College of Natural and Computational Science, University of Gondar, Gondar P.O. Box 196, Ethiopia
| | - Hokuto Nakata
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan
| | - John Yabe
- School of Veterinary Medicine, The University of Zambia, Lusaka P.O. Box 32379, Zambia
- School of Veterinary Medicine, University of Namibia, Windhoek P/B. 13301, Namibia
| | - Haruya Toyomaki
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan
| | - Kaampwe Muzandu
- School of Veterinary Medicine, The University of Zambia, Lusaka P.O. Box 32379, Zambia
| | - Golden Zyambo
- School of Veterinary Medicine, The University of Zambia, Lusaka P.O. Box 32379, Zambia
| | - Yoshinori Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan
- Water Research Group, School of Environmental Sciences and Development, North-West University, Potchefstroom 2531, South Africa
- Translational Research Unit, Veterinary Teaching Hospital, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
- One Health Research Center, Hokkaido University, Sapporo 060-0818, Japan
| | - Kennedy Choongo
- School of Veterinary Medicine, The University of Zambia, Lusaka P.O. Box 32379, Zambia
| | - Mayumi Ishizuka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan
- Correspondence: (M.I.); or (S.M.M.N.); Tel.: +81-11-706-6949 (M.I.); +81-11-706-5105 (S.M.M.N.); Fax: +81-11-706-5105 (M.I. & S.M.M.N.)
| | - Shouta M. M. Nakayama
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan
- School of Veterinary Medicine, The University of Zambia, Lusaka P.O. Box 32379, Zambia
- Correspondence: (M.I.); or (S.M.M.N.); Tel.: +81-11-706-6949 (M.I.); +81-11-706-5105 (S.M.M.N.); Fax: +81-11-706-5105 (M.I. & S.M.M.N.)
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Shan D, Wen X, Guan X, Fang H, Liu Y, Qin M, Wang H, Xu J, Lv J, Zhao J, Chen H. Pubertal lead exposure affects ovary development, folliculogenesis and steroidogenesis by activation of IRE1α-JNK signaling pathway in rat. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 257:114919. [PMID: 37086621 DOI: 10.1016/j.ecoenv.2023.114919] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 05/03/2023]
Abstract
Epidemic studies showed that lead exposures are associated with various female reproductive dysfunctions, including infertility, miscarriage, preterm delivery, and early menopause. However, the mechanism involved is still unclear. In the current study, SD rats were exposed to lead at doses of 0, 5, 25, 50 or 250 mg/L through drinking water from postnatal day 21-56. Lead exposures did not affect the body weight or ovary weight. However, the puberty initiation (ages by which vagina opens and estrous cycle occurs) was significantly delayed by as many as 5.8 and 6.8 days respectively (P < 0.05). Also, lead exposures disrupted the estrous cycles, reduced the numbers of primordial and primary follicles and increased the number of atretic follicles by adult. Furthermore, for the highest does group, serum levels of progesterone and testosterone decreased by 80.2% (P < 0.01) and 49.9% (P < 0.05) respectively, while estradiol level increased by 69.8% (P < 0.01). Western blot analyses indicated that lead exposures specifically down-regulated the expressions of steroidogenic protein STAR, CYP17A1, and HSD3B1, while up-regulated FSHR and CYP19A1. Also, the exposure stimulated the endoplasmic reticulum stress (ERS)-related IRE1α-JNK signaling pathway members. Such activation may also result in apoptosis since the death-signaling molecules CHOP and cleaved-CASP3 were up-regulated while BCL2 was down-regulated. In conclusion, lead exposure during juvenile and puberty significantly affected ovary development and functions. The effects may relate to ERS response since the 6 members related to the pathway were all consistently activated.
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Affiliation(s)
- Dan Shan
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xin Wen
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xiaoju Guan
- Key Laboratory of Children Genitourinary Diseases of Wenzhou City, Department of Pediatric Urology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Hangping Fang
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yijia Liu
- Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Mengjie Qin
- Department of Pharmacology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Hu Wang
- Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Jingfeng Xu
- Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Jieqiang Lv
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Junzhao Zhao
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
| | - Haolin Chen
- Department of Gynecology and Obstetrics, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Key Laboratory of Children Genitourinary Diseases of Wenzhou City, Department of Pediatric Urology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Department of Pharmacology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
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Singh A, Ghosh P, Mukherjee S, Ojha AK, Hansda A, Choudhury P, Halder S, Sharma S, Mukherjee G, Dasgupta S, Chaudhury K. Transition metallo-curcumin complexes: a new hope for endometriosis? J Mater Chem B 2022; 10:9682-9698. [PMID: 36382583 DOI: 10.1039/d2tb01651f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Endometriosis is a debilitating gynecological disorder in women of reproductive age. Laparoscopy, a minimally invasive surgical procedure, provides a definitive diagnosis of the disease. Current treatments, including hormonal therapy and pain medication, are often associated with undesirable side effects limiting their long-term usage. This calls for exploring newer diagnostic and therapeutic options with minimal side effects. Curcumin is an established anti-endometriotic agent with inherent fluorescent properties; however, poor bioavailability limits its clinical utility. To address this shortcoming, various transition metals were conjugated with curcumin to improve its stability, specificity and pharmacological properties. The chemical stability, hemocompatibility and ability of the synthesized metallo-curcumin complexes (MCCs) to ameliorate endometriotic lesions were investigated. While all of the MCCs exhibited low hemolytic activity, their chemical and biological activities were largely dependent on the nature of the metal ion conjugated to the curcumin molecule. Copper-curcumin and nickel-curcumin complexes demonstrated superior therapeutic efficacy evidenced by enhanced antioxidant activity, selective cytotoxicity and increased accumulation in endometriotic cells mediated by an energy-dependent active transport process.
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Affiliation(s)
- Apoorva Singh
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | - Pooja Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | - Suranjana Mukherjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | - Atul Kumar Ojha
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | - Anita Hansda
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | - Priyanka Choudhury
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | | | - Sunita Sharma
- Institute of Reproductive Medicine, Salt Lake, Kolkata, India
| | - Gayatri Mukherjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
| | - Koel Chaudhury
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal-721302, India.
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Obasi CN, Frazzoli C, Orisakwe OE. Heavy metals and metalloids exposure and in vitro fertilization: Critical concerns in human reproductive medicine. FRONTIERS IN REPRODUCTIVE HEALTH 2022; 4:1037379. [PMID: 36478891 PMCID: PMC9720145 DOI: 10.3389/frph.2022.1037379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/17/2022] [Indexed: 07/30/2023] Open
Abstract
Exposures to heavy metals and metalloids have been associated with decreased fecundity and fertility in couples conceiving via assisted reproduction. Heavy metals and metalloids can alter the homeostasis of critical hormones controlling sexual maturation by binding to critical hormones and receptors. This may disrupt the time course of sexual maturation directly or indirectly affecting reproductive competence in males and females. The present review aims to provide a summarized overview of associations between heavy metal exposure, reproductive concerns, and IVF outcomes. A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) in Google Scholar, Scopus, EMBASE and PubMed databases. Initial search produced 1,351 articles from which 30 articles were eligible to be included in the systematic review. From our results, 16 articles reported associations between selected heavy metals and IVF outcomes, while 14 articles summarized the role of heavy metals in reproductive concerns. For the studies on IVF outcomes, different human samples were examined for heavy metals. Heavy metals and metalloids (Pb, Hg, Cd, Cr, Mn, As) correlated negatively with oocyte fertilization/pregnancy rates in hair, follicular fluid, serum, urine and seminal plasma samples, while Cd and Hg in whole blood samples showed no associations. For the studies on reproductive concerns, high levels of heavy metals/metalloids were implicated in the following conditions: infertility (Cd, Pb, Ba, U), spontaneous abortion/miscarriage (Pb, Cd, Sb), congenital heart disease (Al, Mg, Cd), PCOS (As, Cd, Hg, Pb), endometriosis (Pb) and uterine leiomyomata (Hg). Taken together, the results of our study suggest that the impact of heavy metals and metalloids exposure on reproductive health may contribute to the failure rates of in vitro fertilization.
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Affiliation(s)
- Cecilia Nwadiuto Obasi
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port Harcourt, Port Harcourt, Nigeria
| | - Chiara Frazzoli
- Department for Cardiovascular, Dysmetabolic and Aging-Associated Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Orish Ebere Orisakwe
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port Harcourt, Port Harcourt, Nigeria
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, Port Harcourt, Nigeria
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Changes in serum heavy metals in polycystic ovary syndrome and their association with endocrine, lipid-metabolism, inflammatory characteristics and pregnancy outcomes. Reprod Toxicol 2022; 111:20-26. [DOI: 10.1016/j.reprotox.2022.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 11/20/2022]
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Fang CW, Ning HC, Huang YC, Chiang YS, Chuang CW, Wang IK, Fan NC, Weng CH, Huang WH, Hsu CW, Yen TH. Trend in blood lead levels in Taiwanese adults 2005-2017. PLoS One 2021; 16:e0260744. [PMID: 34855854 PMCID: PMC8638909 DOI: 10.1371/journal.pone.0260744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/16/2021] [Indexed: 12/01/2022] Open
Abstract
This study examined the trend of blood lead levels (BLLs) in Taiwanese adults and analyzed the variations in the BLL between Linkou (northern) and Kaohsiung (southern) hospital branches. Between 2005 and 2017, 3,804 adult participants received blood lead tests at the Linkou (n = 2,674) and Kaohsiung (n = 1,130) branches of Chang Gung Memorial Hospital. The geometric mean of BLL was 2.77 μg/dL. The adult participants from the Kaohsiung branch were not only age older (49.8±14.1 versus 39.4±14.2 years; P<0.001) and male predominant (65.8 versus 41.7%; P<0.001) but also showed a higher BLL (4.45±3.93 versus 2.82±2.42 μg/dL; P<0.001) and lower estimated glomerular filtration rate (87.62±25.94 versus 93.67±23.88; P<0.001) than those from the Linkou branch. Multivariable logistic regression analysis revealed that the Kaohsiung branch [odds ratio (OR): 7.143; 95% confident interval (CI): 5.682–8.929; P<0.001], older age (OR: 1.008; 95% CI: 1.000–1.015; P = 0.043) and reduced estimated glomerular filtration rate (OR: 1.009; 95% CI: 1.004–1.014; P = 0.001) were significant predictors for BLL > 5 μg/dL. Therefore, this study confirmed a continuous decreasing trend in the BLL in Taiwan after banning leaded petrol in 2000.
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Affiliation(s)
- Chun-Wan Fang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Linkou, Taiwan
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Hsiao-Chen Ning
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Medical Research and Development, Chang Gung Memorial Hospital, Taoyuan, Linkou, Taiwan
| | - Ya-Ching Huang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Linkou, Taiwan
- Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Shao Chiang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chun-Wei Chuang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Taoyuan, Linkou, Taiwan
| | - I-Kuan Wang
- Department of Nephrology, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Nai-Chia Fan
- Division of Pediatric General Medicine, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Hao Weng
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Nephrology, Clinical Poison Center, Kidney Research Center, Center for Tissue Engineering, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Wen-Hung Huang
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Nephrology, Clinical Poison Center, Kidney Research Center, Center for Tissue Engineering, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Ching-Wei Hsu
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Nephrology, Clinical Poison Center, Kidney Research Center, Center for Tissue Engineering, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Tzung-Hai Yen
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Department of Nephrology, Clinical Poison Center, Kidney Research Center, Center for Tissue Engineering, Chang Gung Memorial Hospital, Linkou, Taiwan
- * E-mail:
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Antioxidant status in relation to heavy metals induced oxidative stress in patients with polycystic ovarian syndrome (PCOS). Sci Rep 2021; 11:22935. [PMID: 34824327 PMCID: PMC8617257 DOI: 10.1038/s41598-021-02120-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 11/02/2021] [Indexed: 11/28/2022] Open
Abstract
Polycystic ovary syndrome (PCOS) is a global health concern for women of reproductive age, as 6.5% of women worldwide are affected by this syndrome. PCOS is marked by hyperandrogenism, anovulation, menstrual abnormalities, and polycystic ovaries. Metals such as arsenic, cadmium, lead and mercury are considered to be systemic toxicants/human carcinogens and seem to have devastating effects on humans, even at minimal exposures. One of the probable aetiological factors for PCOS has been identified as oxidative stress. In view of the probable associations among oxidative stress, metal toxicity and PCOS, the present study examined the role of heavy metals in the generation of oxidative stress among females. This prospective study included 106 women (56 women diagnosed with PCOS and 50 women who were not diagnosed with PCOS as control women). There were no significant differences in the sociodemographic characteristics between the two groups except for the irregularity of menses and the presence of acne. The serum As, Cd, Pb, and Hg levels increased and the serum glutathione (GSH) and superoxide dismutase (SOD) levels diminished significantly in the PCOS group compared to the control group at P < 0.001. The SOD levels were negatively correlated with the As and Pb levels at P < 0.05. Additionally, the PCOS group exhibited a strong negative correlation between the GSH and As levels (P < 0.01), GSH and Pb levels (P < 0.05) and GSH and Hg levels (P < 0.01). Furthermore, the As levels were positively correlated with increased levels of Cd, Pb and Hg among PCOS women. Significant positive correlations were observed between Pb and Cd and between Cd and Hg at P < 0.001. The outcome of the study provides clear insight into the role of metal-induced oxidative stress, which plays a vital role in the pathophysiology underlying PCOS and suggests the use of these markers as prognostic tools to reduce the consequences of high-risk exposure to these metals among females.
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Chang TJ, Lai WQ, Chang YF, Wang CL, Yang DM. Development and optimization of heavy metal lead biosensors in biomedical and environmental applications. J Chin Med Assoc 2021; 84:745-753. [PMID: 34225337 DOI: 10.1097/jcma.0000000000000574] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The detrimental impact of the heavy metal lead (Pb) on human health has been studied for years. The fact that Pb impairs human body has been established from countless painful and sad historical events. Nowadays, World Health Organization and many developmental countries have established regulations concerning the use of Pb. Measuring the blood lead level (BLL) is so far the only way to officially evaluate the degree of Pb exposure, but the so-called safety value (10 μg/dL in adults and 5 μg/dL in children) seems unreliable to represent the security checkpoint for children through daily intake of drinking water or physical contact with a lower contaminated level of Pb contents. In general, unsolved mysteries about the Pb toxicological mechanisms still remain. In this review article, we report on the methods to prevent Pb poison for further Pb toxicological research. We establish high-sensitivity Pb monitoring, and also report on the use of fluorescent biosensors such as genetically-encoded fluorescence resonance energy transfer-based biosensors built for various large demands such as the detection of severe acute respiratory syndrome coronavirus 2. We also contribute to the development and optimization of the FRET-based Pb biosensors. Our well-performed version of Met-lead 1.44 M1 has achieved a limit of detection of 10 nM (2 ppb; 0.2 μg/dL) and almost 5-fold in dynamic range (DR) supported for the real practical applications-that is, the in-cell Pb sensing device for blood and blood-related samples, and the Pb environmental detections in vitro. The perspective of our powerful Pb biosensor incorporated with a highly sensitive bio-chip of the portable device for quick Pb measurements will be addressed for further manipulation.
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Affiliation(s)
- Tai-Jay Chang
- Laboratory of Genome Research, Basic Research Division, Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Biomedical science and Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Wei-Qun Lai
- Microscopy Service Laboratory, Basic Research Division, Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Institute of Biophotonics, School of Biomedical Science and Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Yu-Fen Chang
- LumiSTAR Biotechnology, Inc., Taipei, Taiwan, ROC
| | - Chia-Lin Wang
- Laboratory of Genome Research, Basic Research Division, Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Biomedical science and Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - De-Ming Yang
- Microscopy Service Laboratory, Basic Research Division, Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- Institute of Biophotonics, School of Biomedical Science and Engineering, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
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11
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Butts CD, Bloom MS, McGough A, Lenhart N, Wong R, Mok-Lin E, Parsons PJ, Galusha AL, Browne RW, Yucel RM, Feingold BJ, Fujimoto VY. Toxic elements in follicular fluid adversely influence the likelihood of pregnancy and live birth in women undergoing IVF. Hum Reprod Open 2021; 2021:hoab023. [PMID: 34337160 PMCID: PMC8318822 DOI: 10.1093/hropen/hoab023] [Citation(s) in RCA: 3] [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: 03/14/2021] [Revised: 05/19/2021] [Indexed: 01/24/2023] Open
Abstract
STUDY QUESTION Are follicular fluid (FF), arsenic (As), mercury (Hg), cadmium (Cd) and lead (Pb) concentrations associated with IVF outcomes among women undergoing IVF? SUMMARY ANSWER There was a non-linear association between higher FF Hg concentration and a lower likelihood of biochemical pregnancy and live birth. Higher FF Pb concentration was also associated with a lower probability of live birth. WHAT IS KNOWN ALREADY Previous research suggests that toxic elements may affect fertility among couples conceiving with and without assistance. However, the results have been inconsistent, possibly related in part to exposure misclassification. Very few studies have used ovarian FF to measure toxic elements, as it requires an invasive collection procedure, yet it may offer a more accurate estimate of a biologically effective dose than blood or urine. STUDY DESIGN SIZE DURATION This is a prospective study of 56 women undergoing IVF, from October 2015 to June 2017. FF was collected for analysis on the day of oocyte retrieval. PARTICIPANTS/MATERIALS SETTING METHODS As, Cd, Hg and Pb were determined in 197 FF specimens, using inductively coupled plasma tandem mass spectrometry. FF glutathione peroxidase, glutathione reductase, total glutathione-S-transferase, superoxide dismutase, arylesterase and paraoxonase (PON1p) activities were measured using kinetic enzyme assays. MAIN RESULTS AND THE ROLE OF CHANCE Non-linear associations were detected, in which the probabilities of biochemical pregnancy (P = 0.05) and live birth (P = 0.05) were lower in association with FF Hg greater than ∼0.51 µg/l Hg, adjusted for age, race, cigarette smoking and recent seafood consumption. Higher FF Pb was also associated with a lower likelihood of live birth (relative risk (RR) = 0.68, 95% CI: 0.46, 1.00; P = 0.05). We also found a suggestive, although imprecise, antagonizing mediating effect of PON1p activity on the association between FF Pb and live birth (-28.3%; 95% CI: -358%, 270%). LIMITATIONS REASONS FOR CAUTION The results should be interpreted judiciously given the limited sample size and difficulty accounting for correlated data in generalized additive models and mediation analyses. Additionally, women undergoing IVF are highly selected with respect to age and socioeconomic status, and so the generalizability of the results may be limited. WIDER IMPLICATIONS OF THE FINDINGS Overall, the results suggest that FF Hg was associated with a lower likelihood of biochemical pregnancy and live birth, with a potential threshold effect, and that higher FF Pb was associated with a lower probability of live birth. These results may help to guide clinical recommendations for limiting the exposure of patients to Hg and Pb and ultimately improve IVF success rates. STUDY FUNDING/COMPETING INTERESTS This work was funded in part by the National Institute of Environmental Health Sciences (NIEHS), grant number 1R56ES023886-01, to the University at Albany (M.S.B.), and in part by the National Institute of Environmental Health Sciences (NIEHS), grant number 1U2CES026542-01, to the Wadsworth Center (P.J.P.). The authors declare no competing interests. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Celeste D Butts
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY, USA
| | - Michael S Bloom
- Department of Global and Community Health, George Mason University, Fairfax, VA, USA
| | - Alexandra McGough
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, USA
| | - Nikolaus Lenhart
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, USA
| | - Rebecca Wong
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, USA
| | - Evelyn Mok-Lin
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, USA
| | - Patrick J Parsons
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY, USA
- Laboratory of Inorganic & Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY, USA
| | - Aubrey L Galusha
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY, USA
- Laboratory of Inorganic & Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY, USA
| | - Richard W Browne
- Department of Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA
| | - Recai M Yucel
- Department of Epidemiology and Biostatistics, Temple University, Philadelphia, PA, USA
| | - Beth J Feingold
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY, USA
| | - Victor Y Fujimoto
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, USA
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Goto Y, Mandai M, Nakayama T, Yamazaki S, Nakayama SF, Isobe T, Sato T, Nitta H. Association of prenatal maternal blood lead levels with birth outcomes in the Japan Environment and Children's Study (JECS): a nationwide birth cohort study. Int J Epidemiol 2021; 50:156-164. [PMID: 33141187 DOI: 10.1093/ije/dyaa162] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 07/30/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Despite dramatic declines in prenatal maternal blood lead levels (BLLs) in most developed countries, little is known about the effects of extremely low-level (<1.0 µg/dL) lead exposure on fetal growth. METHODS We measured maternal BLL during the second or third trimester of pregnancy and assessed birth outcomes, including birthweight, preterm birth (<37 gestational weeks) risk, small for gestational age births (SGA; birthweight <10th percentile) and low birthweight (LBW; <2500 g). The association between birthweight and maternal BLL was estimated using linear and quadratic spline models. Multivariable logistic models were used to examine the risk of binary responses. RESULTS From 103 099 pregnant women, 20 000 blood samples were randomly selected for analysis. The maternal BLL range was 0.16-7.4 µg/dL, and the median was 0.63 µg/dL. After adjusting for covariates, the linear model showed that each 0.1 μg/dL increase in maternal BLL was associated with a 5.4 g decrease in mean birthweight [95% confidence interval (CI), 3.4 to 7.5 g]. The risk of SGA [adjusted odds ratio (aOR), 1.03; 95% CI, 1.02 to 1.05) and LBW (aOR, 1.03; 95% CI, 1.02 to 1.05) increased, whereas the risk of preterm delivery did not (aOR, 0.99; 95% CI, 0.97 to 1.02). CONCLUSIONS Even at a maternal BLL below 1.0 µg/dL, prenatal lead exposure was associated with decreased birthweight and increased risk of SGA and LBW, but not preterm delivery. The adverse effect estimates of prenatal lead exposure on birth outcomes were quantitatively small and clinically limited at this low level.
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Affiliation(s)
| | - Marie Mandai
- Center for Genomic Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takeo Nakayama
- Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Tomohiko Isobe
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
| | - Tosiya Sato
- Department of Biostatistics, Kyoto University School of Public Health, Kyoto, Japan
| | - Hiroshi Nitta
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, Tsukuba, Japan
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Paternal Exposure to Non-essential Heavy Metal Affects Embryo Cleavage and Implantation in Intracytoplasmic Sperm Injection (ICSI) Cycles: Evidence for a Paradoxical Effect. Reprod Sci 2021; 28:2550-2561. [PMID: 33683670 DOI: 10.1007/s43032-021-00510-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 02/21/2021] [Indexed: 12/14/2022]
Abstract
Although the adverse effects of non-essential heavy metals on semen quality have been demonstrated in experimental animal models and occupational human exposure studies, little is known about the reproductive efficiency of exposed sperm during the process of intracytoplasmic sperm injection (ICSI). Our study aims to evaluate the effect of paternal exposure to non-essential heavy metals on embryo efficiency outcomes (embryo cleavage, fragmentation, implantation, and live birth) in ICSI cycle. Ninety-five heterosexual couples who underwent 95 ICSI cycles and 78 fresh embryo transfers between January 2003 and December 2009 were evaluated. Men whose female partner was undergoing ICSI were asked to provide semen and blood samples. Heavy metal levels (Pb, Cd, As, Hg, Ba, and U) were analyzed using an ion-coupled plasma-mass spectrometry (ICP-MS; Agilent 7500 ce, Agilent Technologies, Germany) equipped with a cell dynamic range (CDR). Paternal exposure to trace heavy metals was found to influence intermediate reproductive endpoints in ICSI cycles. After adjusting for paternal and maternal confounders, paternal blood concentrations of Cd [-0.30(-0.11,-0.02)], As [-0.26(-0.16,-0.11)], and U [-0.22(-0.24,-0.02)] were inversely associated with embryo cell cleavage on day 3. Counterintuitively, paternal blood and semen Pb levels [0.26(0.01,0.22); 0.25(0.03,0.14)] as well as semen U levels [0.27(0.01,0.19)] were positively associated with the proportion of implanted embryos. There were no significant associations observed for clinical pregnancy and live birth rates with any paternal heavy metal concentrations in semen and blood. These findings highlight the importance of paternal health for embryo efficiency outcomes in ICSI treatment cycles and the need for more male partner inclusive counseling in fertility practice. They also underline a paradoxical positive association between some heavy metal pollutants at low exposure levels and reproductive outcomes.
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Orisakwe OE. Crude oil and public health issues in Niger Delta, Nigeria: Much ado about the inevitable. ENVIRONMENTAL RESEARCH 2021; 194:110725. [PMID: 33428909 DOI: 10.1016/j.envres.2021.110725] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/01/2021] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
The importance of crude oil has come at a great cost. In many developing economies of the world, it can be described as the bitter-sweet crude for its double-edged impacts on the welfare, wellness and wellness of the people. Agitations and restiveness remain characteristic features of Niger Delta following claims of exploitation and neglect of the local population by the multinationals. Literature on the environmental and public health impacts of crude oil was searched from relevant databases such as google scholar, Science Direct, Scopus and PubMed. This paper is a translational scientific and toxicological insight on what should be done by the major players rather than casting unending aspersions. Since living near oil spills and crude oil production sites is an environmental stressor occasioned by exposure to both chemical pollutants and physical menace that are all detrimental to health, cumulative risk assessment CRA is proposed as a viable approach for a comprehensive understanding of the size of this problem. Multinational oil companies should support development of Environmental Medicine Research which will in turn generate data on both how to harness the natural resources to combat the public health issues associated with oil exploration and the mitigation and remediation of the environment. This endeavor will create a waste-to-wealth program that will pacify the restiveness in oil exploring communities. It will be interesting to know that in the same environment that breeds the elephant-in-the-parlor lies the natural antidotes to check-mate the public health malady.
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Affiliation(s)
- Orish Ebere Orisakwe
- World Bank Africa Centre of Excellence in Public Health and Toxicological Research (PUTOR), University of Port Harcourt, PMB,5323, Port Harcourt, Rivers State, Nigeria.
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15
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Butts CD, Bloom MS, McGough A, Lenhart N, Wong R, Mok-Lin E, Parsons PJ, Galusha AL, Yucel RM, Feingold BJ, Browne RW, Fujimoto VY. Variability of essential and non-essential trace elements in the follicular fluid of women undergoing in vitro fertilization (IVF). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 209:111733. [PMID: 33385679 PMCID: PMC7845532 DOI: 10.1016/j.ecoenv.2020.111733] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 05/03/2023]
Abstract
Both essential and non-essential elements have been associated with female reproductive function in epidemiologic investigations, including among IVF populations. To date, most investigators have used blood or urine to assess biomarkers of exposure, with few employing ovarian follicular fluid (FF). FF may offer a more direct "snapshot" of the oocyte microenvironment than blood or urine, however previous studies report follicle-to-follicle variability in FF constituents that may contribute to exposure misclassification. Our objectives were to investigate sources of trace element variability, to estimate FF biomarker reliability among women undergoing IVF (n = 34), and to determine the minimum number of follicles required to estimate subject-specific mean concentrations. We measured As, Hg, Cd, Pb, Cu, Mn, Se, and Zn in FF samples using inductively coupled plasma tandem mass spectrometry. Inter-subject (between-women) variability contributed most of the variability in FF element concentrations, with ovarian, follicular, and analytical as smaller sources of variability. The proportion of variability attributable to sources between-follicles differed by age, body mass index (BMI), race, and cigarette smoking for Cu, Se, and Zn, by BMI and cigarette smoking for As, by primary infertility diagnosis for Hg, Cu, Se, and Zn, and by ovarian stimulation protocol for Mn and Se. Four to five individual follicles were sufficient to estimate subject-specific mean Cu, Se, and Zn concentrations, while >14 were necessary for As, Hg, Cd, Pb, and Mn. Overall, our results suggest that FF is a suitable source of biomarkers of As and Hg exposure in ovarian follicles. Although limited in size, our study offers the most comprehensive exploration of biological variation in FF trace elements to date and may provide guidance for future studies of ovarian trace element exposures.
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Affiliation(s)
- Celeste D Butts
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY 12144, United States
| | - Michael S Bloom
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY 12144, United States; Department of Epidemiology & Biostatistics, University at Albany, State University of New York, Rensselaer, NY 12144, United States; Department of Global and Community Health, George Mason University, Fairfax, VA 22030 United States.
| | - Alexandra McGough
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA 94158, United States
| | - Nikolaus Lenhart
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA 94158, United States
| | - Rebecca Wong
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA 94158, United States
| | - Evelyn Mok-Lin
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA 94158, United States
| | - Patrick J Parsons
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY 12144, United States; Laboratory of Inorganic & Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY 12201, United States
| | - Aubrey L Galusha
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY 12144, United States; Laboratory of Inorganic & Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Albany, NY 12201, United States
| | - Recai M Yucel
- Department of Epidemiology and Biostatistics, Temple University, Philadelphia, PA 19122, United States
| | - Beth J Feingold
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY 12144, United States
| | - Richard W Browne
- Department of Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, Buffalo, NY 14260, United States
| | - Victor Y Fujimoto
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA 94158, United States
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Kataba A, Nakayama SMM, Nakata H, Toyomaki H, Yohannes YB, Yabe J, Muzandu K, Zyambo G, Kubota A, Matsukawa T, Yokoyama K, Ikenaka Y, Ishizuka M. An Investigation of the Wild Rat Crown Incisor as an Indicator of Lead (Pb) Exposure Using Inductively Couple Plasma Mass Spectrometry (ICP-MS) and Laser Ablation ICP-MS. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18020767. [PMID: 33477475 PMCID: PMC7830958 DOI: 10.3390/ijerph18020767] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/13/2022]
Abstract
Lead (Pb) is a metal toxicant of great public health concern. The present study investigated the applicability of the rat incisor in Pb exposure screening. The levels of lead in teeth (Pb-T) in the crown and root of incisors in laboratory Pb-exposed Sprague Dawley rats were quantified using inductively coupled plasma mass spectrometry (ICP-MS). The crown accumulated much Pb-T than the root of the Sprague Dawley rat incisor. The levels of lead in blood (Pb-B) were positively correlated with the Pb-T in the crown and root incisors of the Sprague Dawley rats. As an application of the Pb-T crown results in experimental rats, we subsequently analyzed the Pb-T in the crown incisors of Pb-exposed wild rats (Rattus rattus) sampled from residential sites within varying distances from an abandoned lead-zinc mine. The Pb-T accumulation in the crown of incisors of R. rattus rats decreased with increased distance away from the Pb-Zn mine. Furthermore, the Pb-T was strongly correlated (r = 0.85) with the Pb levels in the blood. Laser ablation ICP-MS Pb-T mappings revealed a homogenous distribution of Pb in the incisor with an increased intensity of Pb-T localized in the tip of the incisor crown bearing an enamel surface in both Sprague Dawley and R. rattus rats. These findings suggest that Pb-T in the crown incisor may be reflective of the rat's environmental habitat, thus a possible indicator of Pb exposure.
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Affiliation(s)
- Andrew Kataba
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo 060-0818, Japan; (A.K.); (H.N.); (H.T.); (Y.B.Y.); (Y.I.)
- School of Veterinary Medicine, The University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.Y.); (K.M.); (G.Z.)
| | - Shouta M. M. Nakayama
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo 060-0818, Japan; (A.K.); (H.N.); (H.T.); (Y.B.Y.); (Y.I.)
- Correspondence: (S.M.M.N.); (M.I.); Tel./Fax: +81-11-706-5105 (S.M.M.N.)
| | - Hokuto Nakata
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo 060-0818, Japan; (A.K.); (H.N.); (H.T.); (Y.B.Y.); (Y.I.)
| | - Haruya Toyomaki
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo 060-0818, Japan; (A.K.); (H.N.); (H.T.); (Y.B.Y.); (Y.I.)
| | - Yared B. Yohannes
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo 060-0818, Japan; (A.K.); (H.N.); (H.T.); (Y.B.Y.); (Y.I.)
- Department of Chemistry, College of Natural and Computational Science, University of Gondar, P.O. Box 196, Gondar 6200, Ethiopia
| | - John Yabe
- School of Veterinary Medicine, The University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.Y.); (K.M.); (G.Z.)
| | - Kaampwe Muzandu
- School of Veterinary Medicine, The University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.Y.); (K.M.); (G.Z.)
| | - Golden Zyambo
- School of Veterinary Medicine, The University of Zambia, P.O. Box 32379, Lusaka 10101, Zambia; (J.Y.); (K.M.); (G.Z.)
| | - Ayano Kubota
- Department of Epidemiology and Environmental Health, Faculty of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan; (A.K.); (T.M.); (K.Y.)
| | - Takehisa Matsukawa
- Department of Epidemiology and Environmental Health, Faculty of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan; (A.K.); (T.M.); (K.Y.)
| | - Kazuhito Yokoyama
- Department of Epidemiology and Environmental Health, Faculty of Medicine, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan; (A.K.); (T.M.); (K.Y.)
| | - Yoshinori Ikenaka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo 060-0818, Japan; (A.K.); (H.N.); (H.T.); (Y.B.Y.); (Y.I.)
- Water Research Group, School of Environmental Sciences and Development, North-West University, Private Bag X6001, Potchefstroom 2531, South Africa
| | - Mayumi Ishizuka
- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo 060-0818, Japan; (A.K.); (H.N.); (H.T.); (Y.B.Y.); (Y.I.)
- Correspondence: (S.M.M.N.); (M.I.); Tel./Fax: +81-11-706-5105 (S.M.M.N.)
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Butts CD, Bloom MS, McGough A, Lenhart N, Wong R, Mok-Lin E, Parsons PJ, Galusha AL, Yucel RM, Feingold BJ, Browne RW, Fujimoto VY. Seafood consumption is associated with higher follicular fluid arsenic (As) and mercury (Hg) concentrations in women undergoing in vitro fertilization (IVF). ENVIRONMENTAL RESEARCH 2020; 188:109753. [PMID: 32554271 DOI: 10.1016/j.envres.2020.109753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/20/2020] [Accepted: 05/27/2020] [Indexed: 05/19/2023]
Abstract
Human exposure to non-essential toxic metals such as cadmium (Cd), mercury (Hg), and lead (Pb), and metalloids such as arsenic (As) commonly occurs through diet. Toxic trace element exposures have been reported in association with fertility and fecundity in epidemiologic studies even at low to moderate levels. While most previous studies employed blood and urine biomarkers of exposure, few have assessed toxic trace elements in ovarian follicular fluid (FF), which surrounds the developing oocyte and hence may better reflect concentrations potentially affecting reproductive outcomes. Our objective was to identify dietary predictors of FF toxic trace elements in n = 56 women (mean age: 38.3 years) undergoing in vitro fertilization (IVF) at the University of California at San Francisco. We determined As, Hg, Cd, and Pb in 197 FF specimens, collected on the day of oocyte retrieval, using inductively coupled plasma tandem mass spectrometry. A comprehensive food frequency questionnaire was used to assess the weekly and annual dietary "patterns" of participants. Consumption of specific seafood items and turkey were correlated with individual FF toxic trace elements. We also found that each unit higher seafood consumption in the past week dominated by mollusks, shrimp, and bass was associated with 60% higher FF As (95% confidence interval (CI): 25%, 105%) and FF Hg (95%CI: 7%, 136%) concentrations. Higher annual seafood consumption dominated by urchin, crab, and trout was associated with 16% higher FF As (95%CI: -2%, 38%) and 31% higher FF Hg (95%CI: 7%, 60%) concentrations per unit intake. No associations were noted between diet and Cd and Pb levels in FF. Overall, our results suggest that higher seafood consumption contributes to elevated levels of As and Hg in FF. These findings are consistent with previous IVF studies that assessed toxic trace element exposures in blood and urine. To our knowledge, this is the first study to report that diet might be a source of As, Hg, Cd, and Pb in FF.
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Affiliation(s)
- Celeste D Butts
- Department of Environmental Health Sciences, University at Albany, State University of New York, One University Place Rensselaer, NY, 12144, United States
| | - Michael S Bloom
- Department of Environmental Health Sciences, University at Albany, State University of New York, One University Place Rensselaer, NY, 12144, United States; Department of Epidemiology & Biostatistics, University at Albany, State University of New York, One University Place Rensselaer, NY, 12144, United States.
| | - Alexandra McGough
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, 94158, United States
| | - Nikolaus Lenhart
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, 94158, United States
| | - Rebecca Wong
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, 94158, United States
| | - Evelyn Mok-Lin
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, 94158, United States
| | - Patrick J Parsons
- Department of Environmental Health Sciences, University at Albany, State University of New York, One University Place Rensselaer, NY, 12144, United States; Laboratory of Inorganic & Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Empire State Plaza, Albany, NY, 12201, United States
| | - Aubrey L Galusha
- Department of Environmental Health Sciences, University at Albany, State University of New York, One University Place Rensselaer, NY, 12144, United States; Laboratory of Inorganic & Nuclear Chemistry, Wadsworth Center, New York State Department of Health, Empire State Plaza, Albany, NY, 12201, United States
| | - Recai M Yucel
- Department of Epidemiology & Biostatistics, University at Albany, State University of New York, One University Place Rensselaer, NY, 12144, United States
| | - Beth J Feingold
- Department of Environmental Health Sciences, University at Albany, State University of New York, One University Place Rensselaer, NY, 12144, United States
| | - Richard W Browne
- Department of Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, Buffalo, NY, 14260, United States
| | - Victor Y Fujimoto
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California at San Francisco, San Francisco, CA, 94158, United States
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18
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Meyer DN, Crofts EJ, Akemann C, Gurdziel K, Farr R, Baker BB, Weber D, Baker TR. Developmental exposure to Pb 2+ induces transgenerational changes to zebrafish brain transcriptome. CHEMOSPHERE 2020; 244:125527. [PMID: 31816550 PMCID: PMC7015790 DOI: 10.1016/j.chemosphere.2019.125527] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/27/2019] [Accepted: 11/30/2019] [Indexed: 05/24/2023]
Abstract
Lead (Pb2+) is a major public health hazard for urban children, with profound and well-characterized developmental and behavioral implications across the lifespan. The ability of early Pb2+ exposure to induce epigenetic changes is well-established, suggesting that Pb2+-induced neurobehavioral deficits may be heritable across generations. Understanding the long-term and multigenerational repercussions of lead exposure is crucial for clarifying both the genotypic alterations behind these behavioral outcomes and the potential mechanism of heritability. To study this, zebrafish (Danio rerio) embryos (<2 h post fertilization; EK strain) were exposed for 24 h to waterborne Pb2+ at a concentration of 10 μM. This exposed F0 generation was raised to adulthood and spawned to produce the F1 generation, which was subsequently spawned to produce the F2 generation. Previous avoidance conditioning studies determined that a 10 μM Pb2+ dose resulted in learning impairments persisting through the F2 generation. RNA was extracted from control- and 10 μM Pb2+-lineage F2 brains, (n = 10 for each group), sequenced, and transcript expression was quantified utilizing Quant-Seq. 648 genes were differentially expressed in the brains of F2 lead-lineage fish versus F2 control-lineage fish. Pathway analysis revealed altered genes in processes including synaptic function and plasticity, neurogenesis, endocrine homeostasis, and epigenetic modification, all of which are implicated in lead-induced neurobehavioral deficits and/or their inheritance. These data will inform future investigations to elucidate the mechanism of adult-onset and transgenerational health effects of developmental lead exposure.
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Affiliation(s)
- Danielle N Meyer
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI, USA; Institute of Environmental Health Sciences, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Emily J Crofts
- Institute of Environmental Health Sciences, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Camille Akemann
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI, USA; Institute of Environmental Health Sciences, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Katherine Gurdziel
- Applied Genome Technology Center, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Rebecca Farr
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Bridget B Baker
- Institute of Environmental Health Sciences, School of Medicine, Wayne State University, Detroit, MI, USA; Division of Laboratory Animal Resources, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Daniel Weber
- Children's Environmental Health Sciences Core Center, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Tracie R Baker
- Department of Pharmacology, School of Medicine, Wayne State University, Detroit, MI, USA; Institute of Environmental Health Sciences, School of Medicine, Wayne State University, Detroit, MI, USA.
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19
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Lee S, Min JY, Min KB. Female Infertility Associated with Blood Lead and Cadmium Levels. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17051794. [PMID: 32164251 PMCID: PMC7084729 DOI: 10.3390/ijerph17051794] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/07/2020] [Accepted: 03/08/2020] [Indexed: 02/06/2023]
Abstract
Lead and cadmium are known to be potential female reproductive toxins. However, studies on the relationship between these metals and infertility are limited. This study examines the association between self-reported infertility and blood lead and cadmium levels in US women by comparing metal levels in infertile and pregnant women. Data on blood lead, blood cadmium, and infertility from women aged 20–39 years who participated in the 2013–2014 and 2015–2016 National Health and Nutrition Examination Surveys were analyzed (n = 124, ‘pregnant’ n = 42, ‘infertile’ n = 82). Blood lead and cadmium levels were measured using inductively coupled plasma mass spectrometry, and infertility and pregnancy status were assessed using a self-reported questionnaire. Low blood lead and cadmium levels (geometric mean of blood lead = 0.50 µg/dL and blood cadmium = 0.26 µg/L) were positively associated with self-reported infertility after adjusting for confounding effects (odds ratio (OR) for lead per two-fold increase in blood metal levels = 2.60; 95% confidence interval (95% CI), 1.05–6.41 and OR for cadmium per two-fold increase = 1.84; 95% CI, 1.07–3.15). Although our findings require confirmation, they suggest that even low blood cadmium and lead levels may be deleterious to female fecundity.
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Affiliation(s)
- Sohyae Lee
- Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul 03080, Korea;
| | - Jin-young Min
- Institute of Health and Environment, Seoul National University, Seoul 08826, Korea;
| | - Kyoung-bok Min
- Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul 03080, Korea;
- Correspondence: ; Tel.: +82-2-740-8968
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20
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Wei Y, Zhu J. Blood levels of endocrine-disrupting metals and prevalent breast cancer among US women. Med Oncol 2019; 37:1. [DOI: 10.1007/s12032-019-1328-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/28/2019] [Indexed: 11/28/2022]
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21
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Wang WJ, Wu CC, Jung WT, Lin CY. The associations among lead exposure, bone mineral density, and FRAX score: NHANES, 2013 to 2014. Bone 2019; 128:115045. [PMID: 31446117 DOI: 10.1016/j.bone.2019.115045] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Revised: 07/31/2019] [Accepted: 08/21/2019] [Indexed: 01/07/2023]
Abstract
Lead exposure has been suspected as a risk factor for osteoporosis. However, in epidemiological studies, the association between environmental lead exposure and bone health were inconsistent. With the decrease of lead exposure in recent decades, we evaluated the association between lead exposure and bone mineral density (BMD) in the general US population in this study. We analyzed data on 1859 adults (aged ≥40 years) from the National Health and Nutrition Examination Survey (NHANES) conducted in 2013-2014 to determine the relationship among lead exposure measured by both blood and urine lead concentration, BMD of total spine and femur, and FRAX score in a cross-sectional study. In premenopausal women, the results showed a 1-unit increase in natural log-transformed blood and urine lead levels was associated with a decrease in total femur BMD of 0.061 g/cm2 (S.E. = 0.015; p = 0.001) and 0.046 g/cm2 (S.E. = 0.018; p = 0.020), respectively. Moreover, in premenopausal women, a 1-unit increase in natural log-transformed blood level was associated with a decrease in total spine BMD of 0.054 g/cm2 (S.E. = 0.019; p = 0.013). Both FRAX scores were positively correlated with blood and urine lead levels in subjects without fractures, while the 10-year hip fracture risk score was positively associated with lead exposure in subjects with a history of fracture or vertebral fracture. In conclusion, lead exposure was associated with decreased total femur and spine BMD, and FRAX score in the general US population. Further research is needed to elucidate the causal relationship among lead exposure, BMD, and fracture risk.
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Affiliation(s)
- Wei-Jie Wang
- Division of Nephrology, Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 300, Taiwan; Department of Biomedical Engineering, Chung Yuan Christian University, Taoyuan 300, Taiwan
| | - Chang-Chin Wu
- Department of Orthopedics, En Chu Kong Hospital, New Taipei City 237, Taiwan; Department of Biomedical Engineering, Yuanpei University of Medical Technology, Hsinchu 300, Taiwan; Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taipei 106, Taiwan; Department of Orthopaedic Surgery, National Taiwan University Hospital, Taipei 106, Taiwan
| | - Wei-Ting Jung
- Department of Chemistry, Fu Jen Catholic University, New Taipei City 242, Taiwan
| | - Chien-Yu Lin
- School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan; Department of Internal Medicine, En Chu Kong Hospital, New Taipei City 237, Taiwan; Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu 300, Taiwan.
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22
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Grieger JA, Grzeskowiak LE, Wilson RL, Bianco-Miotto T, Leemaqz SY, Jankovic-Karasoulos T, Perkins AV, Norman RJ, Dekker GA, Roberts CT. Maternal Selenium, Copper and Zinc Concentrations in Early Pregnancy, and the Association with Fertility. Nutrients 2019; 11:E1609. [PMID: 31315178 PMCID: PMC6683068 DOI: 10.3390/nu11071609] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 07/14/2019] [Indexed: 12/24/2022] Open
Abstract
Trace elements such as zinc, copper, and selenium are essential for reproductive health, but there is limited work examining how circulating trace elements may associate with fertility in humans. The aim of this study was to determine the association between maternal plasma concentrations of zinc, copper, and selenium, and time to pregnancy and subfertility. Australian women (n = 1060) who participated in the multi-centre prospective Screening for Pregnancy Endpoints study were included. Maternal plasma concentrations of copper, zinc and selenium were assessed at 15 ± 1 weeks' gestation. Estimates of retrospectively reported time to pregnancy were documented as number of months to conceive; subfertility was defined as taking more than 12 months to conceive. A range of maternal and paternal adjustments were included. Women who had lower zinc (time ratio, 1.20 (0.99-1.44)) or who had lower selenium concentrations (1.19 (1.01-1.40)) had a longer time to pregnancy, equivalent to a median difference in time to pregnancy of around 0.6 months. Women with low selenium concentrations were also at a 1.46 (1.06-2.03) greater relative risk for subfertility compared to women with higher selenium concentrations. There were no associations between copper and time to pregnancy or subfertility. Lower selenium and zinc trace element concentrations, which likely reflect lower dietary intakes, associate with a longer time to pregnancy. Further research supporting our work is required, which may inform recommendations to increase maternal trace element intake in women planning a pregnancy.
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Affiliation(s)
- Jessica A Grieger
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia.
- Adelaide Medical School, University of Adelaide, 5005 Adelaide, South Australia, Australia.
| | - Luke E Grzeskowiak
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Adelaide Medical School, University of Adelaide, 5005 Adelaide, South Australia, Australia
| | - Rebecca L Wilson
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Adelaide Medical School, University of Adelaide, 5005 Adelaide, South Australia, Australia
- Current affiliation: Center for Fetal and Placental Research, Cincinnati Children's Hospital and Medical Center, Cincinnati, OH 45229, USA
| | - Tina Bianco-Miotto
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, 5064 Adelaide, South Australia, Australia
| | - Shalem Y Leemaqz
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Adelaide Medical School, University of Adelaide, 5005 Adelaide, South Australia, Australia
| | - Tanja Jankovic-Karasoulos
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Adelaide Medical School, University of Adelaide, 5005 Adelaide, South Australia, Australia
| | - Anthony V Perkins
- School of Medical Science, Griffith University, Gold Coast Campus, 4215 Southport, Queensland, Australia
| | - Robert J Norman
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Fertility SA, 5000 Adelaide, South Australia, Australia
| | - Gus A Dekker
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Women and Children's Division, Lyell McEwin Hospital, University of Adelaide, 5112 Adelaide, South Australia, Australia
| | - Claire T Roberts
- Robinson Research Institute, University of Adelaide, 5005 North Adelaide, South Australia, Australia
- Adelaide Medical School, University of Adelaide, 5005 Adelaide, South Australia, Australia
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23
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De Franciscis P, La Manna V, Labriola D, Genovese G, Miraglia N, Schiattarella A, Colacurci N, Torella M. Menopausa precoce e metalli pesanti. GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE 2019. [DOI: 10.23736/s0393-3660.18.03791-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Ma Y, He X, Qi K, Wang T, Qi Y, Cui L, Wang F, Song M. Effects of environmental contaminants on fertility and reproductive health. J Environ Sci (China) 2019; 77:210-217. [PMID: 30573085 DOI: 10.1016/j.jes.2018.07.015] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/20/2018] [Accepted: 07/30/2018] [Indexed: 06/09/2023]
Abstract
Recent research indicates that the human infertility rate is increasing. Although various reasons have been hypothesized for the growing infertility rate, environmental contaminants are potentially important causal agents associated with this change. Chemical contaminants are widespread throughout our environment and human exposure is virtually unavoidable. The overall contribution of environmental exposure to infertility is unknown, but studies involving occupational exposure, together with results from animal experiments, suggest that environmental contaminants may adversely affect fertility. We reviewed the adverse effects of environmental exposure on fertility and related reproductive outcomes. Environmental contaminants covered in this review include heavy metals, organic solvents, pesticides and endocrine disrupting chemicals. It is hoped that this review will highlight the need for further research in this area.
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Affiliation(s)
- Yanmin Ma
- Reproductive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - Xin He
- Reproductive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - Keyan Qi
- Department of Clinical Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - Tong Wang
- Reproductive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - Yongchao Qi
- Reproductive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - Lele Cui
- Reproductive Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China
| | - Fengbang Wang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Maoyong Song
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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25
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Maeda E, Murata K, Kumazawa Y, Sato W, Shirasawa H, Iwasawa T, Izumo K, Tatsuta N, Sakamoto M, Terada Y. Associations of environmental exposures to methylmercury and selenium with female infertility: A case-control study. ENVIRONMENTAL RESEARCH 2019; 168:357-363. [PMID: 30384229 DOI: 10.1016/j.envres.2018.10.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 09/13/2018] [Accepted: 10/03/2018] [Indexed: 05/28/2023]
Abstract
BACKGROUND Methylmercury exposure is a common health risk resulting from daily fish intake. However, studies addressing the link between methylmercury and infertility are limited and also inconsistent. In addition, no previous epidemiological studies have accounted for the interaction between methylmercury and selenium. We aimed to investigate the association between environmental exposures to metals and female fertility. METHODS This case-control study included 98 infertile women receiving fertility treatment (infertile group) and 43 female workers in their thirties (control group) who provided blood samples and returned a questionnaire on lifestyles and dietary characteristics. Blood levels of mercury, lead, cadmium, arsenic, manganese, zinc, and selenium were compared between the groups. Spearman correlation analyses between anti-Müllerian hormone and the metals were conducted. RESULTS The mean selenium level in blood (± SD) and the selenium/mercury molar ratio were significantly lower in the infertile group (189 ± 25 μg/L and 94.6 ± 44.3, respectively) than in the control group (200 ± 25 μg/L and 118.4 ± 70.5). By contrast, blood mercury levels after adjusting for blood selenium and age were significantly higher in the infertile group than in the control group. Multiple logistic regression analyses with the adjustment for the other metals and potential confounders confirmed significant associations of infertility with elevated mercury and reduced selenium levels. No significant correlations were observed between anti-Müllerian hormone and metals. CONCLUSIONS Methylmercury and selenium exposures appear to have adverse and protective effects on female fertility, respectively. This is the first report to suggest the antagonistic interaction between methylmercury and selenium in relation to human female fertility.
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Affiliation(s)
- Eri Maeda
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita, Japan
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita, Japan.
| | - Yukiyo Kumazawa
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Wataru Sato
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Hiromitsu Shirasawa
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Takuya Iwasawa
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Kimiko Izumo
- Department of Environment and Public Health, National Institute for Minamata Disease, Kumamoto, Japan
| | - Nozomi Tatsuta
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita, Japan; Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Mineshi Sakamoto
- Department of Environment and Public Health, National Institute for Minamata Disease, Kumamoto, Japan
| | - Yukihiro Terada
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
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26
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Lai GL, Yeh CC, Yeh CY, Chen RY, Fu CL, Chen CH, Tzeng CR. Decreased zinc and increased lead blood levels are associated with endometriosis in Asian Women. Reprod Toxicol 2017; 74:77-84. [PMID: 28889936 DOI: 10.1016/j.reprotox.2017.09.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 09/05/2017] [Accepted: 09/06/2017] [Indexed: 12/14/2022]
Abstract
Endometriosis is an inflammatory disease associated with multiple pathogenic factors and studies regarding roles of trace metals in endometriosis have been inconsistent and limited. The aim of this cross-sectional study was to compare the blood levels of miscellaneous trace metals measured by inductively coupled plasma mass spectrometry in infertile women with and without endometriosis. Zinc level is associated with declining odds (adjusted OR=0.39, 95% CI=0.18-0.88) of endometriosis. By contrast, lead level is associated with increasing odds (adjusted OR=2.59, 95% CI=1.11-6.06) of endometriosis. The cadmium levels were higher in women with endometriosis, but the aOR was not significant. Zinc has anti-inflammatory characteristics and regulates homeostasis of zinc-containing superoxide dismutase. High lead levels might induce reactive oxygen species and deplete antioxidant defense mechanisms. Further prospective study is needed to test for their causal associations.
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Affiliation(s)
- Guan-Lin Lai
- School of Public Health, College of Public health, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan
| | - Chih-Ching Yeh
- School of Public Health, College of Public health, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan; Department of Public Health, College of Public health, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan
| | - Ching-Ying Yeh
- School of Public Health, College of Public health, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan
| | - Ruey-Yu Chen
- School of Public Health, College of Public health, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan
| | - Chiung-Lin Fu
- School of Public Health, College of Public health, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan
| | - Chi-Huang Chen
- Department of Obstetrics and Gynecology, College of Medicine, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan; Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei Medical University, 252 Wu-Hsin Street, Taipei 110, Taiwan
| | - Chii-Ruey Tzeng
- Department of Obstetrics and Gynecology, College of Medicine, Taipei Medical University, 250 Wu-Hsin Street, Taipei 110, Taiwan; Center for Reproductive Medicine and Sciences, Taipei Medical University and Hospital, 252 Wu-Hsin Street, Taipei 110, Taiwan.
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27
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More AF, Spaulding NE, Bohleber P, Handley MJ, Hoffmann H, Korotkikh EV, Kurbatov AV, Loveluck CP, Sneed SB, McCormick M, Mayewski PA. Next-generation ice core technology reveals true minimum natural levels of lead (Pb) in the atmosphere: Insights from the Black Death. GEOHEALTH 2017; 1:211-219. [PMID: 32158988 PMCID: PMC7007106 DOI: 10.1002/2017gh000064] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/01/2017] [Accepted: 05/05/2017] [Indexed: 05/20/2023]
Abstract
Contrary to widespread assumptions, next-generation high (annual to multiannual) and ultra-high (subannual) resolution analyses of an Alpine glacier reveal that true historical minimum natural levels of lead in the atmosphere occurred only once in the last ~2000 years. During the Black Death pandemic, demographic and economic collapse interrupted metal production and atmospheric lead dropped to undetectable levels. This finding challenges current government and industry understanding of preindustrial lead pollution and its potential implications for human health of children and adults worldwide. Available technology and geographic location have limited previous ice core investigations. We provide new high- (discrete, inductively coupled plasma mass spectrometry, ICP-MS) and ultra-high resolution (laser ablation inductively coupled plasma mass spectrometry, LA-ICP-MS) records of atmospheric lead deposition extracted from the high Alpine glacier Colle Gnifetti, in the Swiss-Italian Alps. We show that contrary to the conventional wisdom, low levels at or approaching natural background occurred only in a single 4 year period in ~2000 years documented in the new ice core, during the Black Death (~1349-1353 C.E.), the most devastating pandemic in Eurasian history. Ultra-high chronological resolution allows for the first time detailed and decisive comparison of the new glaciochemical data with historical records. Historical evidence shows that mining activity ceased upwind of the core site from ~1349 to 1353, while concurrently on the glacier lead (Pb) concentrations-dated by layer counting confirmed by radiocarbon dating-dropped to levels below detection, an order of magnitude beneath figures deemed low in earlier studies. Previous assumptions about preindustrial "natural" background lead levels in the atmosphere-and potential impacts on humans-have been misleading, with significant implications for current environmental, industrial, and public health policy, as well as for the history of human lead exposure. Trans-disciplinary application of this new technology opens the door to new approaches to the study of the anthropogenic impact on past and present human health.
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Affiliation(s)
- Alexander F. More
- Initiative for the Science of the Human Past and Department of HistoryHarvard UniversityCambridgeMassachusettsUSA
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
| | - Nicole E. Spaulding
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
| | - Pascal Bohleber
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
- Institute of Environmental Physics, Im Neuenheimer Feld 229Heidelberg UniversityHeidelbergGermany
| | - Michael J. Handley
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
| | - Helene Hoffmann
- Institute of Environmental Physics, Im Neuenheimer Feld 229Heidelberg UniversityHeidelbergGermany
| | - Elena V. Korotkikh
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
| | - Andrei V. Kurbatov
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
| | - Christopher P. Loveluck
- Department of Archaeology, University Park, School of HumanitiesUniversity of NottinghamNottinghamUK
| | - Sharon B. Sneed
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
| | - Michael McCormick
- Initiative for the Science of the Human Past and Department of HistoryHarvard UniversityCambridgeMassachusettsUSA
| | - Paul A. Mayewski
- Climate Change Institute, Sawyer Environmental Research BuildingUniversity of MaineOronoMaineUSA
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La-Llave-León O, Méndez-Hernández EM, Castellanos-Juárez FX, Esquivel-Rodríguez E, Vázquez-Alaniz F, Sandoval-Carrillo A, García-Vargas G, Duarte-Sustaita J, Candelas-Rangel JL, Salas-Pacheco JM. Association between Blood Lead Levels and Delta-Aminolevulinic Acid Dehydratase in Pregnant Women. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14040432. [PMID: 28420209 PMCID: PMC5409633 DOI: 10.3390/ijerph14040432] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/06/2017] [Accepted: 04/12/2017] [Indexed: 01/08/2023]
Abstract
Blood lead levels (BLLs) and delta-aminolevulinic acid dehydratase (ALAD) activity are considered biomarkers of lead exposure and lead toxicity, respectively. The present study was designed to investigate the association between BLLs and ALAD activity in pregnant women from Durango, Mexico. A total of 633 pregnant women aged 13–43 years participated in this study. Blood lead was measured by a graphite furnace atomic absorption spectrometer. ALAD activity was measured spectrophotometrically. Mean blood lead was 2.09 ± 2.34 µg/dL; and 26 women (4.1%) crossed the Centers for Disease Control (CDC) recommended level of 5 µg/dL. ALAD activity was significantly lower in women with levels of lead ≥5 µg/dL compared to those with BLLs < 5 µg/dL (p = 0.002). To reduce the influence of extreme values on the statistical analysis, BLLs were analyzed by quartiles. A significant negative correlation between blood lead and ALAD activity was observed in the fourth quartile of BLLs (r = −0.113; p < 0.01). Among women with blood lead concentrations ≥2.2 µg/dL ALAD activity was negatively correlated with BLLs (r = −0.413; p < 0.01). Multiple linear regression demonstrated that inhibition of ALAD in pregnant women may occur at levels of lead in blood above 2.2 µg/dL.
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Affiliation(s)
- Osmel La-Llave-León
- Institute of Scientific Research, Juarez University of the State of Durango, AV. Universidad y Fanny Anitua s/n. Col. Centro, C. P. 34000 Durango, Mexico.
| | - Edna M Méndez-Hernández
- Institute of Scientific Research, Juarez University of the State of Durango, AV. Universidad y Fanny Anitua s/n. Col. Centro, C. P. 34000 Durango, Mexico.
| | - Francisco X Castellanos-Juárez
- Institute of Scientific Research, Juarez University of the State of Durango, AV. Universidad y Fanny Anitua s/n. Col. Centro, C. P. 34000 Durango, Mexico.
| | - Eloísa Esquivel-Rodríguez
- Faculty of Nursing and Midwifery, Juarez University of the State of Durango, Cuauhtemoc, 223 North, Col. Centro, C. P. 34000 Durango, Mexico.
| | | | - Ada Sandoval-Carrillo
- Institute of Scientific Research, Juarez University of the State of Durango, AV. Universidad y Fanny Anitua s/n. Col. Centro, C. P. 34000 Durango, Mexico.
| | - Gonzalo García-Vargas
- Faculty of Health Sciences, Juarez University of the State of Durango, Gomez Palacio la Salle 1 y Sixto Ugalde, s/n, Col. Revolucion, C. P. 35050 Gomez Palacio, Durango, Mexico.
| | - Jaime Duarte-Sustaita
- Faculty of Health Sciences, Juarez University of the State of Durango, Gomez Palacio la Salle 1 y Sixto Ugalde, s/n, Col. Revolucion, C. P. 35050 Gomez Palacio, Durango, Mexico.
| | - Jorge L Candelas-Rangel
- Faculty of Health Sciences, Juarez University of the State of Durango, Gomez Palacio la Salle 1 y Sixto Ugalde, s/n, Col. Revolucion, C. P. 35050 Gomez Palacio, Durango, Mexico.
| | - José M Salas-Pacheco
- Institute of Scientific Research, Juarez University of the State of Durango, AV. Universidad y Fanny Anitua s/n. Col. Centro, C. P. 34000 Durango, Mexico.
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Zeng X, Xu X, Boezen HM, Huo X. Children with health impairments by heavy metals in an e-waste recycling area. CHEMOSPHERE 2016; 148:408-15. [PMID: 26829309 DOI: 10.1016/j.chemosphere.2015.10.078] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 10/10/2015] [Accepted: 10/19/2015] [Indexed: 02/05/2023]
Abstract
E-waste recycling has become a global environmental health issue. Pernicious chemicals escape into the environment due to informal and nonstandard e-waste recycling activities involving manual dismantling, open burning to recover heavy metals and open dumping of residual fractions. Heavy metals derived from electronic waste (e-waste), such as, lead (Pb), cadmium (Cd), chromium (Cr), manganese (Mn), nickel (Ni), mercury (Hg), arsenic (As), copper (Cu), zinc (Zn), aluminum (Al) and cobalt (Co), differ in their chemical composition, reaction properties, distribution, metabolism, excretion and biological transmission. Our previous studies showed that heavy metal exposure have adverse effects on children's health including lower birth weight, lower anogenital distance, lower Apgar scores, lower current weight, lower lung function, lower hepatitis B surface antibody levels, higher prevalence of attention-deficit/hyperactivity disorder, and higher DNA and chromosome damage. Heavy metals influence a number of diverse systems and organs, resulting in both acute and chronic effects on children's health, ranging from minor upper respiratory irritation to chronic respiratory, cardiovascular, nervous, urinary and reproductive disease, as well as aggravation of pre-existing symptoms and disease. These effects of heavy metals on children's health are briefly discussed.
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Affiliation(s)
- Xiang Zeng
- Laboratory of Environmental Medicine and Developmental Toxicology, and Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou University, 22 Xinling Road, Shantou 515041, China; Department of Epidemiology, University Medical Center Groningen, University of Groningen, 1 Hanzeplein, Groningen 9700RB, The Netherlands; Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, 1 Hanzeplein, Groningen 9700RB, The Netherlands
| | - Xijin Xu
- Laboratory of Environmental Medicine and Developmental Toxicology, and Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou University, 22 Xinling Road, Shantou 515041, China; Department of Cell Biology and Genetics, Shantou University Medical College, Shantou University, 22 Xinling Road, Shantou 515041, China
| | - H Marike Boezen
- Department of Epidemiology, University Medical Center Groningen, University of Groningen, 1 Hanzeplein, Groningen 9700RB, The Netherlands; Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, 1 Hanzeplein, Groningen 9700RB, The Netherlands
| | - Xia Huo
- School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China.
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Wainman BC, Kesner JS, Martin ID, Meadows JW, Krieg EF, Nieboer E, Tsuji LJ. Menstrual cycle perturbation by organohalogens and elements in the Cree of James Bay, Canada. CHEMOSPHERE 2016; 149:190-201. [PMID: 26855224 PMCID: PMC4827016 DOI: 10.1016/j.chemosphere.2015.12.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 11/23/2015] [Accepted: 12/15/2015] [Indexed: 05/29/2023]
Abstract
Persistent organohalogens (POHs) and metals have been linked to alterations in menstrual cycle function and fertility in humans. The Cree First Nations people living near James Bay in Ontario and Quebec, Canada, have elevated levels of POHs, mercury and lead compared to other Canadians. The present study examines the interrelationships between selected POHs and elements on menstrual cycle function in these Cree women. Menstrual cycle characteristics were derived from structured daily diaries and endocrine measurements from daily urine samples collected during one cycle for 42 women age 19-42. We measured 31 POHs in blood plasma and 18 elements in whole blood, for 31 of the participants. POHs and elements detected in ≥ 70% of the participants were transformed by principal component (PC) analysis to reduce the contaminant exposure data to fewer, uncorrelated PCA variables. Multiple regression analysis revealed that, after adjusting for confounders, PC-3 values showed significant negative association with cycle length, after adjusting for confounders (p = 0.002). PC-3 accounted for 9.2% of the variance and shows positive loadings for cadmium, selenium, and PBDE congeners 47 and 153, and a negative loading for copper. Sensitivity analysis of the model to quantify likely effect sizes showed a range of menstrual cycle length from 25.3 to 28.3 days using the lower and upper 95% confidence limits of mean measured contaminant concentrations to predict cycle length. Our observations support the hypothesis that the menstrual cycle function of these women may be altered by exposure to POHs and elements from their environment.
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Affiliation(s)
- Bruce C Wainman
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada L8S 4K1.
| | - James S Kesner
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH, 45226, USA
| | - Ian D Martin
- Ian Martin Consultants, Elora, ON, Canada N0B 1S0
| | - Juliana W Meadows
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH, 45226, USA
| | - Edward F Krieg
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, Cincinnati, OH, 45226, USA
| | - Evert Nieboer
- Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON, Canada L8S 4K1; Institute of Community Medicine, University of Tromsø, Norway
| | - Leonard J Tsuji
- Health Studies, The Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON, Canada M1C 1A4
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31
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Blood lead level and its association with body mass index and obesity in China - Results from SPECT-China study. Sci Rep 2015; 5:18299. [PMID: 26658662 PMCID: PMC4677308 DOI: 10.1038/srep18299] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 11/16/2015] [Indexed: 02/07/2023] Open
Abstract
We aimed to report environmental and blood lead level (BLL) in China, and investigate the relationship of BLL with body mass index (BMI) and obesity. 5558 subjects were enrolled from 16 sites in China. BLL was measured by atomic absorption spectrometry. Obesity was defined as BMI ≥ 30 kg/m2. Median (interquartile range) of BLL was 44.00 μg/L (29.00–62.16) for men and 37.79 μg/L (25.13–54.35) for women, about twice higher than in U.S. population. Subjects in rural and high-economic-status areas had significantly greater BLL (P < 0.001). However, in these areas, the lead levels in drinking water, river water and rice were comparable to or significantly lower than those in urban and low-economic-status areas. After adjustment for age, urbanization, economic status and metabolic factors, BLL was independently associated with BMI in women (P for trend < 0.001), but not in men. In fully adjusted model, increased quartiles of BLL were associated with significantly increased odds ratios of obesity (P for trend < 0.01) in women. In conclusion, BLLs in Chinese adults were much higher than in developed countries. There was a sex-specific association between BLL and BMI. Elevated BLL does not appear to be associated with lead levels in drinking water or rice, suggesting some other exposure source.
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Lei HL, Wei HJ, Ho HY, Liao KW, Chien LC. Relationship between risk factors for infertility in women and lead, cadmium, and arsenic blood levels: a cross-sectional study from Taiwan. BMC Public Health 2015; 15:1220. [PMID: 26653029 PMCID: PMC4673771 DOI: 10.1186/s12889-015-2564-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 12/03/2015] [Indexed: 12/21/2022] Open
Abstract
Background The World Health Organization reported that more than 10 % of women are severely affected by infertility, making the condition a major worldwide public health problem. Lead (Pb), cadmium (Cd), and arsenic (As) are environmental pollutants that may contribute to reproductive disorders. This cross-sectional study investigated the association between blood concentrations of Pb, Cd, and As and risk factors for infertility in women. Methods Women who were infertile (N = 310) or pregnant (N = 57) were recruited from the gynecology and obstetrics department of a hospital. The participants were interviewed to obtain their sociodemographic, reproductive, and lifestyle information. The concentrations of Pb, Cd, and As in their blood samples were measured using inductively coupled plasma mass spectrometry. Results Our findings suggested that the concentrations of Pb and As, but not Cd, were significantly higher in the blood of infertile women than in that of pregnant women. A higher percentage of the infertile women consumed more alcohol, used Chinese herbal medicine more frequently, and lacked physical activity compared with the pregnant women. After accounting for potentially relevant predictors, we observed that blood Pb levels might be elevated by using Chinese herbal medicine 1–6 times per week (aOR = 2.82, p = 0.05). In addition, engaging in physical activity 1–2 times per week (aOR = 0.37, p = 0.05) might assist in reducing Pb accumulation in infertile women, though the p value was borderline. Conclusions Lack of physical activity and frequent use of Chinese herbal medicine may be associated with elevated blood Pb levels in infertile women. Chinese herbal medicine use was observed to increase the Pb body burden of both infertile and pregnant women in this study. The risk–benefit for Chinese herbal medicine intake should be evaluated by women of childbearing age.
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Affiliation(s)
- Hsiao-Ling Lei
- School of Public Health, Taipei Medical University, No. 250, Wuxing St., Taipei City, 110, Taiwan.
| | - Hsiao-Jui Wei
- Infertility Center, Taiwan Adventist Hospital, No. 424, Sec. 2, Bade Rd., Taipei City, 105, Taiwan. .,Xiamen EMBO Hospital, No. 117-119, Hubin South Road, Xiamen City, 361000, Fujian Province, China.
| | - Hsin-Yi Ho
- Infertility Center, Taiwan Adventist Hospital, No. 424, Sec. 2, Bade Rd., Taipei City, 105, Taiwan. .,Xiamen EMBO Hospital, No. 117-119, Hubin South Road, Xiamen City, 361000, Fujian Province, China.
| | - Kai-Wei Liao
- School of Public Health, Taipei Medical University, No. 250, Wuxing St., Taipei City, 110, Taiwan.
| | - Ling-Chu Chien
- School of Public Health, Taipei Medical University, No. 250, Wuxing St., Taipei City, 110, Taiwan.
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Faramawi MF, Delongchamp R, Lin YS, Liu Y, Abouelenien S, Fischbach L, Jadhav S. Environmental lead exposure is associated with visit-to-visit systolic blood pressure variability in the US adults. Int Arch Occup Environ Health 2014; 88:381-8. [DOI: 10.1007/s00420-014-0970-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 07/22/2014] [Indexed: 01/13/2023]
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Tanrıkut E, Karaer A, Celik O, Celik E, Otlu B, Yilmaz E, Ozgul O. Role of endometrial concentrations of heavy metals (cadmium, lead, mercury and arsenic) in the aetiology of unexplained infertility. Eur J Obstet Gynecol Reprod Biol 2014; 179:187-90. [DOI: 10.1016/j.ejogrb.2014.05.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 04/08/2014] [Accepted: 05/28/2014] [Indexed: 11/26/2022]
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Rzymski P, Rzymski P, Tomczyk K, Niedzielski P, Jakubowski K, Poniedziałek B, Opala T. Metal status in human endometrium: relation to cigarette smoking and histological lesions. ENVIRONMENTAL RESEARCH 2014; 132:328-33. [PMID: 24834829 DOI: 10.1016/j.envres.2014.04.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/07/2014] [Accepted: 04/09/2014] [Indexed: 05/25/2023]
Abstract
Human endometrium is a thick, blood vessel-rich, glandular tissue which undergoes cyclic changes and is potentially sensitive to the various endogenous and exogenous compounds supplied via the hematogenous route. As recently indicated, several metals including Cd, Pb, Cr and Ni represent an emerging class of potential metalloestrogens and can be implicated in alterations of the female reproductive system including endometriosis and cancer. In the present study, we investigated the content of five metals: Cd, Cr, Ni, Pb and Zn in 25 samples of human endometrium collected from Polish females undergoing diagnostic or therapeutic curettage of the uterine cavity. The overall mean metal concentration (analyzed using microwave induced plasma atomic emission spectrometry MIP-OES) decreased in the following order: Cr>Pb>Zn>Ni>Cd. For the first time it was demonstrated that cigarette smoking significantly increases the endometrial content of Cd and Pb. Concentration of these metals was also positively correlated with years of smoking and the number of smoked cigarettes. Tissue samples with recognized histologic lesions (simple hyperplasia, polyposis and atrophy) were characterized by a 2-fold higher Cd level. No relation between the age of the women and metal content was found. Our study shows that human endometrium can be a potential target of metal accumulation within the human body. Quantitative analyses of endometrial metal content could serve as an additional indicator of potential impairments of the menstrual cycle and fertility.
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Affiliation(s)
- Piotr Rzymski
- Department of Biology and Environmental Protection, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznań, Poland.
| | - Paweł Rzymski
- Department of Mother׳s and Child׳s Health, Gynecologic and Obstetrical University Hospital, Poznan University of Medical Sciences, Poznań, Poland
| | - Katarzyna Tomczyk
- Department of Mother׳s and Child׳s Health, Gynecologic and Obstetrical University Hospital, Poznan University of Medical Sciences, Poznań, Poland
| | - Przemysław Niedzielski
- Department of Analytical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland
| | - Karol Jakubowski
- Department of Analytical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland
| | - Barbara Poniedziałek
- Department of Biology and Environmental Protection, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznań, Poland
| | - Tomasz Opala
- Department of Mother׳s and Child׳s Health, Gynecologic and Obstetrical University Hospital, Poznan University of Medical Sciences, Poznań, Poland
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Eum KD, Weisskopf MG, Nie LH, Hu H, Korrick SA. Cumulative lead exposure and age at menopause in the Nurses' Health Study cohort. ENVIRONMENTAL HEALTH PERSPECTIVES 2014; 122:229-34. [PMID: 24398113 PMCID: PMC3948024 DOI: 10.1289/ehp.1206399] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 01/03/2014] [Indexed: 05/18/2023]
Abstract
BACKGROUND Early menopause has been associated with many adverse health outcomes, including increased risk of cardiovascular disease morbidity and mortality. Lead has been found to be adversely associated with female reproductive function, but whether exposures experienced by the general population are associated with altered age at menopause has not been explored. OBJECTIVE Our goal was to assess the association between cumulative lead exposure and age at natural menopause. METHODS Self-reported menopausal status and bone lead concentration measured with K-shell X-ray fluorescence-a biomarker of cumulative lead exposure-were obtained from 434 women participants in the Nurses' Health Study. RESULTS The mean (± SD) age at natural menopause was 50.8 ± 3.6 years. Higher tibia lead level was associated with younger age at menopause. In adjusted analyses, the average age of menopause for women in the highest tertile of tibia lead was 1.21 years younger (95% CI: -2.08, -0.35) than for women in the lowest tertile (p-trend = 0.006). Although the number of cases was small (n = 23), the odds ratio for early menopause (< 45 years of age) was 5.30 (95% CI: 1.42, 19.78) for women in the highest tertile of tibia lead compared with those in the lowest tertile (p-trend = 0.006). There was no association between patella or blood lead and age at menopause. CONCLUSIONS Our results support an association between low-level cumulative lead exposure and an earlier age at menopause. These data suggest that low-level lead exposure may contribute to menopause-related health outcomes in older women through effects on age at menopause. CITATION Eum KD, Weisskopf MG, Nie LH, Hu H, Korrick SA. 2014. Cumulative lead exposure and age at menopause in the Nurses' Health Study Cohort. Environ Health Perspect 122:229–234; http://dx.doi.org/10.1289/ehp.1206399
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Affiliation(s)
- Ki-Do Eum
- Department of Environmental Health, and
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Bloom MS, Kim K, Kruger PC, Parsons PJ, Arnason JG, Steuerwald AJ, Fujimoto VY. Associations between toxic metals in follicular fluid and in vitro fertilization (IVF) outcomes. J Assist Reprod Genet 2012; 29:1369-79. [PMID: 23229520 DOI: 10.1007/s10815-012-9882-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 10/29/2012] [Indexed: 11/25/2022] Open
Abstract
PURPOSE We previously reported associations between trace concentrations of Hg, Cd and Pb in blood and urine and reproductive outcomes for women undergoing in-vitro fertilization (IVF). Here we assess measurements in single follicular fluid (FF) specimens from 46 women as a presumably more relevant marker of dose for reproductive toxicity. METHODS FF specimens were analyzed for Hg, Cd and Pb using sector field-inductively coupled plasma-mass spectrometry (SF-ICP-MS). Variability sources were assessed by nested ANOVA. Multivariable regression was used to evaluate associations for square root transformed metals with IVF outcomes, adjusting for confounders. RESULTS An inverse association is detected for FF Pb and fertilization (relative risk (RR) = 0.68, P = 0.026), although positive for Cd (RR = 9.05, P = 0.025). While no other statistically significant associations are detected, odds ratios (OR) are increased for embryo cleavage with Hg (OR = 3.83, P = 0.264) and Cd (OR = 3.18, P = 0.644), and for embryo fragmentation with Cd (OR = 4.08, P = 0.586) and Pb (OR = 2.22, P = 0.220). Positive estimates are observed for Cd with biochemical (RR = 19.02, P = 0.286) and clinical pregnancies (RR = 38.80, P = 0.212), yet with very low precision. CONCLUSIONS We have identified associations between trace amounts of Pb and Cd in FF from a single follicle, and oocyte fertilization. Yet, the likelihood of biological variation in trace element concentrations within and between follicles, coupled with levels that are near the limits of detection suggest that future work should examine multiple follicles using a 'one follicle-one oocyte/embryo' approach. A larger study is merited to assess more definitively the role that these environmental factors could play with respect to egg quality in IVF programs.
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Affiliation(s)
- Michael S Bloom
- Department of Environmental Health Sciences, University at Albany, State University of New York, School of Public Health Rm. #157, One University Place, Rensselaer, NY 12144, USA.
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Bloom MS, Fujimoto VY, Steuerwald AJ, Cheng G, Browne RW, Parsons PJ. Background exposure to toxic metals in women adversely influences pregnancy during in vitro fertilization (IVF). Reprod Toxicol 2012; 34:471-81. [DOI: 10.1016/j.reprotox.2012.06.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 05/31/2012] [Accepted: 06/15/2012] [Indexed: 10/28/2022]
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Buck Louis GM, Sundaram R, Schisterman EF, Sweeney AM, Lynch CD, Gore-Langton RE, Chen Z, Kim S, Caldwell K, Barr DB. Heavy metals and couple fecundity, the LIFE Study. CHEMOSPHERE 2012; 87:1201-7. [PMID: 22309709 PMCID: PMC3327819 DOI: 10.1016/j.chemosphere.2012.01.017] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 01/02/2012] [Accepted: 01/03/2012] [Indexed: 05/19/2023]
Abstract
The effect of heavy metals at environmentally relevant concentrations on couple fecundity has received limited study despite ubiquitous exposure. In 2005-2009, couples (n=501) desiring pregnancy and discontinuing contraception were recruited and asked to complete interviews and to provide blood specimens for the quantification of cadmium (μg L(-1)), lead (μg dL(-1)) and mercury (μg L(-1)) using inductively coupled plasma-mass spectrometry. Couples completed daily journals on lifestyle and intercourse along with menstruation and pregnancy testing for women. Couples were followed for 12 months or until pregnant. Fecundability odds ratios (FORs) and 95% confidence intervals (CIs) were estimated adjusting for age, body mass index, cotinine, and serum lipids in relation to female then male exposures. FORs <1 denote a longer time to pregnancy. In adjusted models, reduced FORs were observed for both female cadmium (0.78; 95% CI 0.63-0.97) and male lead (0.85; 95% CI 0.73-0.98) concentrations. When jointly modeling couples' exposures, only male lead concentration significantly reduced the FOR (0.82; 95% CI 0.68, 0.97), though the FOR remained <1 for female cadmium (0.80; 95% CI 0.64, 1.00). This prospective couple based cohort with longitudinal capture of time to pregnancy is suggestive of cadmium and lead's reproductive toxicity at environmentally relevant concentrations.
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Affiliation(s)
- Germaine M. Buck Louis
- Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, Maryland 20852
| | - Rajeshwari Sundaram
- Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, Maryland 20852
| | - Enrique F. Schisterman
- Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, Maryland 20852
| | - Anne M. Sweeney
- Texas A & M Health Science Center, School of Rural Public Health
| | - Courtney D. Lynch
- Department of Obstetrics & Gynecology, The Ohio State University College of Medicine
| | | | - Zhen Chen
- Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, Maryland 20852
| | - Sungduk Kim
- Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6100 Executive Blvd., Room 7B05, Rockville, Maryland 20852
| | - Kathleen Caldwell
- Division of Laboratory Science, National Center for Environmental Health, Centers for Disease Control and Prevention
| | - Dana Boyd Barr
- Department of Environmental and Occupational Health, Rollins School of Public Health of Emory University
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Wu WT, Lin YJ, Liou SH, Yang CY, Cheng KF, Tsai PJ, Wu TN. Brain cancer associated with environmental lead exposure: evidence from implementation of a National Petrol-Lead Phase-Out Program (PLPOP) in Taiwan between 1979 and 2007. ENVIRONMENT INTERNATIONAL 2012; 40:97-101. [PMID: 21821291 DOI: 10.1016/j.envint.2011.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 06/25/2011] [Accepted: 06/29/2011] [Indexed: 05/14/2023]
Abstract
BACKGROUND AND OBJECTIVE In 1981, a Petrol-Lead Phase-Out Program (PLPOP) was launched in Taiwan for the abatement of environmental lead emissions. The present study was intended to examine whether the high Petrol-Lead Emission Areas (PLEA) would result in an increase in the incidence rate of brain cancer based on a national data bank. METHODS The national brain cancer incidence data was obtained from the Taiwan National Cancer Registry. Age standardized incidence rates were calculated based on the 2000 WHO world standard population, and gasoline consumption data was obtained from the Bureau of Energy. The differences in the trend tests for age-standardized incidence rates of brain cancer between high, median, low, and small PLEA were analyzed. RESULTS A significant increase was found from small to high PLEA in age-standardized incidence rates of brain cancer. By taking six possible confounders into account, the age-standardized incidence rates for brain cancer were highly correlated with the median and high PLEA by reference to the small PLEA. CONCLUSION After being adjusted for a number of relevant confounders, it could be concluded that high PLEA might result in an increase in the incidence rate of brain cancer resulting from high lead exposures.
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Affiliation(s)
- Wei-Te Wu
- Institute of Environmental and Occupational Health Sciences, National Yang Ming University, Taipei, Taiwan; Division of Environmental Health and Occupational Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Yu-Jen Lin
- Division of Environmental Health and Occupational Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Saou-Hsing Liou
- Division of Environmental Health and Occupational Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Chun-Yuh Yang
- Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Kuang-Fu Cheng
- Graduate Institute of Biostatistics, China Medical University, Taichung, Taiwan
| | - Perng-Jy Tsai
- Department of Occupational Safety and Health, China Medical University, Taichung, Taiwan
| | - Trong-Neng Wu
- Division of Environmental Health and Occupational Medicine, National Health Research Institutes, Miaoli County, Taiwan; Graduate Institute of Biostatistics, China Medical University, Taichung, Taiwan.
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41
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Hanna CW, Bloom MS, Robinson WP, Kim D, Parsons PJ, vom Saal FS, Taylor JA, Steuerwald AJ, Fujimoto VY. DNA methylation changes in whole blood is associated with exposure to the environmental contaminants, mercury, lead, cadmium and bisphenol A, in women undergoing ovarian stimulation for IVF. Hum Reprod 2012; 27:1401-10. [PMID: 22381621 DOI: 10.1093/humrep/des038] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Changes in DNA methylation may play an important role in the deleterious reproductive effects reported in association with exposure to environmental pollutants. In this pilot study, we identify candidate methylation changes associated with exposure to pollutants in women undergoing in vitro fertilization (IVF). METHODS Blood and urine were collected from women on the day of oocyte retrieval. Whole blood was analyzed for mercury and lead, and urine for cadmium using inductively coupled plasma mass spectrometry. Unconjugated bisphenol A (BPA) was analyzed in serum using high-performance liquid chromatography with Coularray detection. Participants were dichotomized as higher or lower exposure groups by median concentrations. Using the Illumina GoldenGate Methylation Cancer Panel I, DNA methylation in whole blood from 43 women was assessed at 1505 CpG sites for association with exposure levels of each pollutant. Candidate CpG sites were identified using a Diff Score >|13| (P< 0.05) and an absolute difference >10% which were confirmed using bisulfite pyrosequencing. RESULTS Methylation of the GSTM1/5 promoter was increased for women with higher mercury exposure (P= 0.04); however, no correlation was observed (r= 0.17, P= 0.27). Reduced methylation was detected in the COL1A2 promoter in women with higher exposure to lead (P= 0.004), and an inverse correlation was observed (r = - 0.45, P= 0.03). Lower methylation of a promoter CpG site at the TSP50 gene was detected in women with higher BPA exposure (P= 0.005), and again an inverse correlation was identified (r = - 0.51, P= 0.001). CONCLUSIONS Altered DNA methylation at various CpG sites was associated with exposure to mercury, lead or BPA, providing candidates to be investigated using a larger study sample, as the results may reflect an independently associated predictor (e.g. socioeconomic status, diet, genetic variants, altered blood cell composition). Further studies accommodating variations in these factors will be needed to confirm these associations and identify their underlying causes.
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Affiliation(s)
- Courtney W Hanna
- Department of Medical Genetics, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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42
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Jackson LW, Howards PP, Wactawski-Wende J, Schisterman EF. The association between cadmium, lead and mercury blood levels and reproductive hormones among healthy, premenopausal women. Hum Reprod 2011; 26:2887-95. [PMID: 21778284 PMCID: PMC3174033 DOI: 10.1093/humrep/der250] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 06/21/2011] [Accepted: 06/30/2011] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Cadmium, lead and mercury have been identified in human follicular fluid and ovarian tissue, and have been associated with adverse reproductive outcomes in epidemiologic studies; however, few studies have examined the relationship between blood metal levels and reproductive hormones. METHODS Among 252 premenopausal women aged 18-44 years, we examined the association between blood metal levels (cadmium, lead and mercury), cycle length, and reproductive hormones [FSH, LH, estradiol (E(2)) and progesterone] measured at clinically relevant time points in the menstrual cycle. The association between metal levels (continuous) and hormone levels was assessed using linear regression with hormone levels (natural) log transformed and the results interpreted as the percentage difference in hormone level per unit increase in metal level. RESULTS Median (interquartile range) cadmium, lead and mercury levels were 0.30 µg/l (0.19, 0.43), 0.87 µg/dl (0.68, 1.20) and 1.10 µg/l (0.58, 2.10), respectively. Each 1 µg/l increase in cadmium levels was associated with a 21% [95% confidence interval (CI): -2.9, 49.9] increase in early follicular phase E(2) levels after adjusting for age, race/ethnicity, lead and mercury. This association decreased when restricted to never smokers (10%; 95% CI: -19.5, 51.3). Cadmium was also associated with a non-significant 9% (95% CI: -0.2, 19.9), or 2.7 day, increase in cycle length among never smokers. No associations were observed between lead or mercury and the outcomes in adjusted analyses. CONCLUSIONS Further evaluation of the association between cadmium, E(2) and cycle length is warranted, taking into consideration cigarette smoke and its multiple components.
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Affiliation(s)
- L W Jackson
- Department of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, Cleveland, OH 44106-4945, USA.
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43
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Pollack AZ, Schisterman EF, Goldman LR, Mumford SL, Albert PS, Jones RL, Wactawski-Wende J. Cadmium, lead, and mercury in relation to reproductive hormones and anovulation in premenopausal women. ENVIRONMENTAL HEALTH PERSPECTIVES 2011; 119:1156-61. [PMID: 21543284 PMCID: PMC3237358 DOI: 10.1289/ehp.1003284] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 05/04/2011] [Indexed: 05/24/2023]
Abstract
BACKGROUND Metals can interfere with hormonal functioning by binding at the receptor site and through indirect mechanisms; thus, they may be associated with hormonal changes in premenopausal women. OBJECTIVES We examined the associations between cadmium, lead, and mercury, and anovulation and patterns of reproductive hormones [estradiol, progesterone, follicle-stimulating hormone (FSH), luteinizing hormone] among 252 premenopausal women 18-44 years of age who were enrolled in the BioCycle Study in Buffalo, New York. METHODS Women were followed for up to two menstrual cycles, with serum samples collected up to eight times per cycle. Metal concentrations were determined at baseline in whole blood by inductively coupled mass spectroscopy. Marginal structural models with stabilized inverse probability weights and nonlinear mixed models with harmonic terms were used to estimate the effects of cadmium, lead, and mercury on reproductive hormone levels during the menstrual cycle and anovulation. RESULTS Geometric mean (interquartile range) cadmium, lead, and mercury levels were 0.29 (0.19-0.43) μg/L, 0.93 (0.68-1.20) μg/dL, and 1.03 (0.58-2.10) μg/L, respectively. We observed decreases in mean FSH with increasing cadmium [second vs. first tertile: -10.0%; 95% confidence interval (CI), -17.3% to -2.5%; third vs. first tertile: -8.3%; 95% CI, -16.0% to 0.1%] and increases in mean progesterone with increasing lead level (second vs. first tertile: 7.5%; 95% CI, 0.1-15.4%; third vs. first tertile: 6.8%; 95% CI, -0.8% to 14.9%). Metals were not significantly associated with anovulation. CONCLUSIONS Our findings support the hypothesis that environmentally relevant levels of metals are associated with modest changes in reproductive hormone levels in healthy, premenopausal women.
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Affiliation(s)
- Anna Z Pollack
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, Epidemiology Branch, Rockville, Maryland, USA
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Krieg EF, Feng HA. The relationships between blood lead levels and serum follicle stimulating hormone and luteinizing hormone in the National Health and Nutrition Examination Survey 1999-2002. Reprod Toxicol 2011; 32:277-85. [PMID: 21669282 DOI: 10.1016/j.reprotox.2011.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 03/31/2011] [Accepted: 05/20/2011] [Indexed: 10/18/2022]
Abstract
The relationships between blood lead levels and serum follicle stimulating hormone and luteinizing hormone were assessed in a nationally representative sample of women, 35-60 years old, from the National Health and Nutrition Examination Survey 1999-2002. The blood lead levels of the women ranged from 0.2 to 17.0 μg/dL. The estimated geometric mean was 1.4 μg/dL, and the estimated arithmetic mean was 1.6 μg/dL. As the blood lead level increased, the concentration of serum follicle stimulating hormone increased in post-menopausal women, women who had both ovaries removed, and pre-menopausal women. The concentration of luteinizing hormone increased as blood lead level increased in post-menopausal women and women who had both ovaries removed. The lowest concentrations of blood lead at which a relationship was detected were 0.9 μg/dL for follicle stimulating hormone and 3.2 μg/dL for luteinizing hormone. Lead may act directly or indirectly at ovarian and non-ovarian sites to increase the concentrations of follicle stimulating hormone and luteinizing hormone.
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Affiliation(s)
- Edward F Krieg
- National Institute for Occupational Safety and Health, Robert A. Taft Laboratories, 4676 Columbia Parkway, MS C-22, Cincinnati, OH 45226, USA.
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45
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Bloom MS, Louis GMB, Sundaram R, Kostyniak PJ, Jain J. Associations between blood metals and fecundity among women residing in New York State. Reprod Toxicol 2011; 31:158-63. [PMID: 20933593 PMCID: PMC3039711 DOI: 10.1016/j.reprotox.2010.09.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 09/09/2010] [Accepted: 09/28/2010] [Indexed: 10/19/2022]
Abstract
Trace exposures to metals may affect female reproductive health. To assess the relation between trace concentrations of blood metals and female fecundity, 99 non-pregnant women discontinuing contraception for the purpose of becoming pregnant were prospectively followed. Participants completed a baseline interview and daily diaries until pregnant, or up to 12 menstrual cycles at risk for pregnancy; home pregnancy test kits were used. For 80 women, whole blood specimens were analyzed for arsenic, cadmium, lead, magnesium, nickel, selenium and zinc using inductively coupled plasma mass spectrometry (ICP-MS). Time to pregnancy was estimated using Cox proportional hazards models for discrete time. Metal concentrations were generally within population reference intervals. Adjusted models suggest a 51.5% increase in the probability for pregnancy per 3.60 μg/L increase in Mg (P=0.062), and a 27.7% decrease per 0.54 μg/L increase in Zn (P=0.114). Findings indicate that Mg and Zn may impact female fecundity, but in varying directions.
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Affiliation(s)
- Michael S Bloom
- Department of Environmental Health Sciences, School of Public Health, University at Albany, State University of New York, One University Place, Rensselaer, NY 12144, USA.
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Jackson LW, Cromer BA, Panneerselvamm A. Association between bone turnover, micronutrient intake, and blood lead levels in pre- and postmenopausal women, NHANES 1999-2002. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:1590-6. [PMID: 20688594 PMCID: PMC2974698 DOI: 10.1289/ehp.1002158] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 05/24/2010] [Accepted: 08/05/2010] [Indexed: 05/26/2023]
Abstract
BACKGROUND Blood lead levels (BLLs) have been shown to increase during periods of high bone turnover such as pregnancy and menopause. OBJECTIVES We examined the associations between bone turnover and micronutrient intake with BLLs in women 20-85 years of age (n = 2,671) participating in the National Health and Nutrition Examination Survey, 1999-2002. METHODS Serum bone-specific alkaline phosphatase (BAP) and urinary cross-linked N-telopeptides (NTx) were measured as markers of bone formation and resorption, respectively. Lead was quantified in whole blood. The association between tertiles of BAP and NTx, and BLLs was examined using linear regression with natural log transformed BLLs as the dependent variable and interpreted as the percent difference in geometric mean BLLs. RESULTS In adjusted analyses, mean BLLs among postmenopausal women in the upper tertiles of NTx and BAP were 34% [95% confidence interval (CI), 23%-45%] and 30% (95% CI, 17%-43%) higher than BLLs among women in the lowest tertiles of NTx and BAP, respectively. These associations were weaker, but remained statistically significant, among premenopausal women (NTx: 10%; 95% CI, 0.60%-19%; BAP: 14%; 95% CI, 6%-22%). Within tertiles of NTx and BAP, calcium intake above the Dietary Reference Intake (DRI), compared with below the DRI, was associated with lower mean BLLs among postmenopausal women but not premenopausal women, although most of the associations were not statistically significant. We observed similar associations for vitamin D supplement use. CONCLUSIONS Bone resorption and bone formation were associated with a significant increase in BLLs among pre- and postmenopausal women.
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Affiliation(s)
- Leila W Jackson
- Department of Epidemiology and Biostatistics, Case Western Reserve University School of Medicine, Cleveland, Ohio 44106-4945, USA.
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Toxic trace metals and human oocytes during in vitro fertilization (IVF). Reprod Toxicol 2010; 29:298-305. [PMID: 20096775 DOI: 10.1016/j.reprotox.2010.01.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Revised: 12/29/2009] [Accepted: 01/14/2010] [Indexed: 11/22/2022]
Abstract
Trace exposures to the toxic metals mercury (Hg), cadmium (Cd) and lead (Pb) may threaten human reproductive health. The aim of this study is to generate biologically-plausible hypotheses concerning associations between Hg, Cd, and Pb and in vitro fertilization (IVF) endpoints. For 15 female IVF patients, a multivariable log-binomial model suggests a 75% reduction in the probability for a retrieved oocyte to be in metaphase-II arrest for each microg/dL increase in blood Pb concentration (relative risk (RR)=0.25, 95% confidence interval (CI) 0.03-2.50, P=0.240). For 15 male IVF partners, each microg/L increase in urine Cd concentration is associated with an 81% decrease in the probability for oocyte fertilization (RR=0.19, 95% CI 0.03-1.35, P=0.097). Because of the magnitude of the effects, these results warrant a comprehensive study with sufficient statistical power to further evaluate these hypotheses.
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The effects of lead exposure on placental NF-κB expression and the consequences for gestation. Reprod Toxicol 2009; 27:190-5. [DOI: 10.1016/j.reprotox.2008.12.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2008] [Revised: 11/27/2008] [Accepted: 12/19/2008] [Indexed: 02/04/2023]
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Doumouchtsis KK, Doumouchtsis SK, Doumouchtsis EK, Perrea DN. The effect of lead intoxication on endocrine functions. J Endocrinol Invest 2009; 32:175-83. [PMID: 19411819 DOI: 10.1007/bf03345710] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Studies on the effects of lead on the endocrine system are mainly based on occupationally lead-exposed workers and experimental animal models. Although evidence is conflicting, it has been reported that accumulation of lead affects the majority of the endocrine glands. In particular, it appears to have an effect on the hypothalamic-pituitary axis causing blunted TSH, GH, and FSH/LH responses to TRH, GHRH, and GnRH stimulation, respectively. Suppressed GH release has been reported, probably caused by reduced synthesis of GHRH, inhibition of GHRH release or reduced somatotrope responsiveness. Higher levels of PRL in lead intoxication have been reported. In short-term lead-exposed individuals, high LH and FSH levels are usually associated to normal testosterone concentrations, whereas in long-term exposed individuals' low testosterone levels do not induce high LH and FSH concentrations. These findings suggest that lead initially causes some subclinical testicular damage, followed by hypothalamic or pituitary disturbance when longer periods of exposure take place. Similarly, lead accumulates in granulosa cells of the ovary, causing delays in growth and pubertal development and reduced fertility in females. In the parenchyma of adrenals histological and cytological changes are demonstrated, causing changes in plasma basal and stress-mediated corticosterone concentrations and reduced cytosolic and nuclear glucocorticoid receptor binding. Thyroid hormone kinetics are also affected. Central defect of the thyroid axis or an alteration in T4 metabolism or binding to proteins may be involved in derangements in thyroid hormone action. Lead toxicity involves alterations on calcitropic hormones' homeostasis, which increase the risk of skeletal disorders.
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Affiliation(s)
- K K Doumouchtsis
- Department of General Medicine and Endocrinology, St George's Hospital, University of London, London, UK.
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Woodruff TJ, Carlson A, Schwartz JM, Giudice LC. Proceedings of the Summit on Environmental Challenges to Reproductive Health and Fertility: executive summary. Fertil Steril 2008; 89:e1-e20. [PMID: 18308046 DOI: 10.1016/j.fertnstert.2008.01.065] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Revised: 10/03/2007] [Accepted: 10/03/2007] [Indexed: 02/09/2023]
Abstract
The 2007 Summit on Environmental Challenges to Reproductive Health and Fertility convened scientists, health care professionals, community groups, political representatives, and the media to hear presentations on the impact of environmental contaminants on reproductive health and fertility, and to discuss opportunities to improve health through research, education, communication, and policy. Environmental reproductive health focuses on exposures to environmental contaminants, particularly during critical periods of development, and their potential effects on future reproductive health, including conception, fertility, pregnancy, adolescent development, and adult health. Approximately 87,000 chemical substances are registered for commercial use in the United States, with ubiquitous human exposures to environmental contaminants in air, water, food, and consumer products. Exposures during critical windows of susceptibility may result in adverse effects with lifelong and even intergenerational health impacts. Effects can include impaired development and function of the reproductive tract and permanently altered gene expression, leading to metabolic and hormonal disorders, reduced fertility and fecundity, and illnesses such as testicular, prostate, uterine, and cervical cancers later in life. This executive summary reviews effects of pre- and postnatal exposures on male and female reproductive health, and provides a series of recommendations for advancing the field in the areas of research, policy, health care, and community action.
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Affiliation(s)
- Tracey J Woodruff
- Program on Reproductive Health and the Environment, National Center of Excellence in Women's Health, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, California 94143, USA.
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