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Little M, Achouba A, Ayotte P, Lemire M. Emerging evidence on selenoneine and its public health relevance in coastal populations: a review and case study of dietary Se among Inuit populations in the Canadian Arctic. Nutr Res Rev 2024:1-10. [PMID: 38327212 DOI: 10.1017/s0954422424000039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Selenium is an essential mineral yet both deficiency and excess are associated with adverse health effects. Dietary intake of Se in humans varies greatly between populations due to food availability, dietary preferences, and local geological and ecosystem processes impacting Se accumulation into agricultural products and animal populations. We argue there is a need to evaluate and reconsider the relevance of public health recommendations on Se given recent evidence, including the metabolic pathways and health implications of Se. This argument is particularly pertinent for Inuit populations in Northern Canada, who often exceed dietary tolerable upper intake levels and exhibit very high whole blood Se concentrations due to their dependence on local country foods high in the newly discovered Se compound, selenoneine. Since selenoneine appears to have lower toxicity compared to other Se species and does not contribute to the circulating pools of Se for selenoprotein synthesis, we argue that total dietary Se or total Se in plasma or whole blood are poor indicators of Se adequacy for human health in these populations. Overall, this review provides an overview of the current evidence of Se speciation, deficiency, adequacy, and excess and implications for human health and dietary recommendations, with particular reference to Inuit populations in the Canadian Arctic and other coastal populations consuming marine foods.
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Affiliation(s)
- Matthew Little
- School of Public Health and Social Policy, University of Victoria, Victoria, BCV8P 5C2, Canada
| | - Adel Achouba
- Axe santé des populations et pratiques optimales en Santé, Centre de Recherche du CHU de Québec, Hôpital du Saint-Sacrement, 1050, chemin Sainte-Foy, Québec, G1S 4L8, Canada
| | - Pierre Ayotte
- Axe santé des populations et pratiques optimales en Santé, Centre de Recherche du CHU de Québec, Hôpital du Saint-Sacrement, 1050, chemin Sainte-Foy, Québec, G1S 4L8, Canada
- Département de Médecine Sociale et Préventive, Université Laval, Pavillon Ferdinand-Vandry, Québec, G1V 0A6, Canada
- Centre de Toxicologie du Québec, Institut national de santé publique du Québec (INSPQ), 945 Avenue Wolfe, Quebec, G1V 5B3, Canada
| | - Mélanie Lemire
- Axe santé des populations et pratiques optimales en Santé, Centre de Recherche du CHU de Québec, Hôpital du Saint-Sacrement, 1050, chemin Sainte-Foy, Québec, G1S 4L8, Canada
- Département de Médecine Sociale et Préventive, Université Laval, Pavillon Ferdinand-Vandry, Québec, G1V 0A6, Canada
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Zhang Y, Yan X, Tan J, Tan J, Liu C, Yang P, Xian Y, Wang Q. Exposure of Reproductive-Aged Women to Multiple Metals and Its Associations with Unexplained Recurrent Miscarriage. TOXICS 2023; 11:830. [PMID: 37888681 PMCID: PMC10611235 DOI: 10.3390/toxics11100830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/24/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023]
Abstract
Exposure to heavy metals exerts toxic effects on female reproduction and embryo development. This study examined the exposure of patients with unexplained recurrent miscarriage (uRM) to multiple metals and the correlations among exposures to different metals. A total of 275 participants were enrolled, including 43 healthy women without previous miscarriage (the control group) and 232 uRM women (the case group); among these uRM women, 159 had two miscarriages (2M), 42 had three miscarriages (3M) and 31 had four or more miscarriages (≥4M). A total of 22 elements were measured in serum samples via inductively coupled plasma-mass spectrometry. The levels of calcium (104.37 mg/L vs. 92.65/93.02/92.61/92.47 mg/L) and selenium (131.85 µg/L vs. 117.80/118.04/115.88/124.35 µg/L) were higher in the controls than in the total uRM group and the 2M, 3M and ≥4M subgroups. The level of vanadium was significantly lower in the controls than in the total uRM group (0.15 µg/L vs. 0.23 µg/L), and the level of lead was lower in the controls than that in the total uRM group and the 2M, 3M and ≥4M subgroups (0.01 µg/L vs. 0.28/0.18/0.63/0.34 µg/L). After adjusting for age, body mass index and education level, calcium and selenium exposure were consistently negatively associated with miscarriage, while lead exposure was positively associated with miscarriage. In addition, the correlations among exposures to different metals slightly differed between the control and uRM groups. Therefore, changes in some metal elements in the blood might be related to the risk of uRM.
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Affiliation(s)
- Yingying Zhang
- Reproductive Medicine Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510632, China
| | - Xi Yan
- Reproductive Medicine Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510632, China
| | - Jianhua Tan
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 510632, China
| | - Jifan Tan
- Reproductive Medicine Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510632, China
| | - Chunsheng Liu
- Guangzhou Institute of Food Inspection, Guangzhou 510632, China
| | - Pan Yang
- Department of Public Health and Preventive Medicine, Jinan University, Guangzhou 510632, China
| | - Yanping Xian
- Guangzhou Quality Supervision and Testing Institute, Guangzhou 510632, China
| | - Qiong Wang
- Reproductive Medicine Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510632, China
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Zejnullahu VA, Zejnullahu VA, Kosumi E. The role of oxidative stress in patients with recurrent pregnancy loss: a review. Reprod Health 2021; 18:207. [PMID: 34656123 PMCID: PMC8520213 DOI: 10.1186/s12978-021-01257-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 10/01/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Recurrent pregnancy loss (RPL) presents one of the main problems in the field of reproductive medicine, due to the unknown etiology in 50% of cases, as well as limited evidence-based diagnostic and therapeutic modalities. Recent studies indicate that systemic and placental oxidative stress (OS) represents an essential factor in the etiopathogenesis of RPL. This article is a comprehensive narrative synthesis of previously published studies concerning the role of oxidative stress in the etiology of recurrent pregnancy loss. METHODS We conducted literature search of published studies in the English language focusing on oxidative stress and its association with recurrent pregnancy loss (RPL) utilizing the Medline and Cochrane databases from 2000 through January 2021. The keywords used were "recurrent pregnancy loss" "oxidative stress and recurrent pregnancy loss" and "oxidative stress biomarkers and recurrent pregnancy loss". RESULTS The search yielded 1116 publications, of which 92 were included in the final analysis. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) at basal levels have various physiological functions whereas deviation from redox window is associated with different pathologies including early pregnancy loss. The currently available studies support the concept that increased oxidative stress (OS) and deficient antioxidant protection is implicated in the etiology of recurrent pregnancy loss (RPL) but underlying mechanisms through which OS affects pregnancy outcome remains largely indefinable. CONCLUSIONS Future research in this field can provide new insights regarding the OS-mediated damage in recurrent pregnancy loss as well as potential applications of antioxidant therapy in this group of patients.
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Affiliation(s)
- Vjosa A Zejnullahu
- Department of Obstetrics and Gynecology, University Clinical Center of Kosovo, 10000, Prishtina, Kosovo. .,Faculty of Medicine, University of Prishtina "Hasan Prishtina", Prishtina, Kosovo.
| | - Valon A Zejnullahu
- Department of Abdominal Surgery, University Clinical Center of Kosovo, 10000, Prishtina, Kosovo
| | - Ernad Kosumi
- Department of Obstetrics and Gynecology, University Clinical Center of Kosovo, 10000, Prishtina, Kosovo
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Di Y, Zhao C, Bai Y, Wang D, Zhang F, Xu C, Xi C. Effects of blood pathological changes before TAI on pregnancy of dairy cows with anestrus and estrus. ARQ BRAS MED VET ZOO 2021. [DOI: 10.1590/1678-4162-12058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT The objective of this study was to investigate the influence of plasma pathological changes before timed artificial insemination (TAI) on pregnancy of cows. The contents of estrogen (E2), progesterone (P4), glucose (Glu), selenium (Se), brain-derived neurotrophic factor (BDNF), and histamine (HIS) in plasma of 48 Holstein cows were measured before TAI. According to the estrus detection, the cows were divided into estrus (E) and anestrus (A) groups. After pregnancy testing at 28 d after TAI, two groups of E and A were divided into positive pregnancy of E group (EP+), negative pregnancy of E group (EP-), positive pregnancy of A group (AP+), and negative pregnancy of A group (AP-). The contents of E2, P4, Glu, Se, BDNF and hIS significantly differed among the four groups (P<0.01). The ROC analysis was used to determine the risk of negative pregnancy test (-) after TAI was increased when plasma E2 was less than 46.45 pmol/L in cows before TAI. The changes in E2, P4,hIS, Glu, and BDNF in the blood of natural estrus and natural anestrus cows affected the pregnancy after TAI. the level of E2 in plasma may be used to assess the risk of negative pregnancy after TAI.
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Affiliation(s)
- Y. Di
- Heilongjiang Bayi Agricultural University, China
| | - C. Zhao
- Heilongjiang Bayi Agricultural University, China
| | - Y. Bai
- Heilongjiang Bayi Agricultural University, China
| | - D. Wang
- Heilongjiang Bayi Agricultural University, China
| | - F. Zhang
- Heilongjiang Bayi Agricultural University, China
| | - C. Xu
- Heilongjiang Bayi Agricultural University, China
| | - C. Xi
- Heilongjiang Bayi Agricultural University, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, China
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La X, Wang W, Zhang M, Liang L. Definition and Multiple Factors of Recurrent Spontaneous Abortion. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1300:231-257. [PMID: 33523437 DOI: 10.1007/978-981-33-4187-6_11] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Recurrent spontaneous abortion (RSA) is usually defined as three or more spontaneous abortions prior to 20-28 weeks gestation. RSA affects approximately 2-5% of all women of childbearing age, and it brings tremendous psychological and psychiatric trauma to the women and also results in economic burden. The causes could be female age, anatomical and chromosomal abnormalities, genetic, endocrinological, placental anomalies, infection, smoking and alcohol consumption, psychological factor, exposure to environmental factors such as heavy metal, environment pollution, and radiation.
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Affiliation(s)
- Xiaolin La
- Reproductive Medicine Center, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China.
| | - Wenjuan Wang
- Reproductive Medical Center, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, P.R. China
| | - Meng Zhang
- Reproductive Medicine Center, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Li Liang
- Reproductive Medical Center, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, P.R. China
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Guo Y, Yu P, Zhu J, Yang S, Yu J, Deng Y, Li N, Liu Z. High maternal selenium levels are associated with increased risk of congenital heart defects in the offspring. Prenat Diagn 2019; 39:1107-1114. [PMID: 31461777 DOI: 10.1002/pd.5551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 08/15/2019] [Accepted: 08/18/2019] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To examine whether maternal hair or cord blood selenium levels are associated with infant congenital heart defects (CHDs). METHOD A hospital-based case-control study was performed with samples collected from 2010 to 2014. Selenium levels in maternal hair and fetal cord serum were measured using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Data from medical records of infants with CHDs were collected. Logistic regression analysis was employed to examine the independent association between maternal selenium exposure and fetal CHD. RESULTS In total, 888 pregnant women were included in this study. Median (interquartile range) selenium levels in of maternal hair was similar in the control and CHD group. A significant association was detected between increased maternal hair selenium concentration and CHDs in offspring (adjusted odds ratio [aOR] 3.57, 95 %CI, 1.90-6.70). The association was present in all CHD groups, including septal defects, conotruncal defects, left ventricular outflow tract obstruction, right ventricular outflow tract obstruction, and anomalous pulmonary venous return. CONCLUSION High maternal selenium level is significantly associated with the occurrence of fetal CHD.
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Affiliation(s)
- Yixiong Guo
- Department of birth defect molecular epidemiology laboratory, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China.,Department of Biobank, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Ping Yu
- Department of birth defect molecular epidemiology laboratory, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Jun Zhu
- Department of birth defect molecular epidemiology laboratory, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China.,National Center for Birth Defect Monitoring, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Shuihua Yang
- Department of Ultrasound, Maternal and Child Healthcare Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Jing Yu
- Department of Pediatric, Mianyang Central Hospital, Mianyang, China
| | - Ying Deng
- Department of birth defect molecular epidemiology laboratory, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China.,National Center for Birth Defect Monitoring, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Nana Li
- Department of birth defect molecular epidemiology laboratory, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China
| | - Zhen Liu
- Department of birth defect molecular epidemiology laboratory, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China.,National Center for Birth Defect Monitoring, Department of Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, China
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Öztürk E, Pehlivan S, Ozcan C, Ugur MG, Balat O. Paraoxonase-1 Polymorphisms (L55M/Q192R) and Activities (PONase/AREase) in Patients with Idiopathic Recurrent Early Pregnancy Loss: A Preliminary Study. Genet Test Mol Biomarkers 2019; 23:501-505. [PMID: 31294627 DOI: 10.1089/gtmb.2018.0245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Aim: To evaluate the associations between idiopathic recurrent early pregnancy loss (REPL) and paraoxonase-1 (PON1) polymorphisms and the activities of its encoded enzymes. Materials and Methods: Ninety-eight women were enrolled in this study, including 21 currently pregnant multiparous women without a history of miscarriage; 18 multiparous women who were not pregnant during the study; 30 women with a history of idiopathic REPL who were pregnant; and 29 who were not. Paraoxonase (PONase) and arylesterase (AREase) activities, two activities of the PON1 enzyme, were measured through commercially available kits (Relassay, Gaziantep, Turkey). PON1 genotypes were determined by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) analysis. Data were analyzed using SPSS for Windows version 19.0 (SPSS). Results: There was no association between idiopathic REPL and PON1 polymorphisms or PONase activity. The AREase activity of the PON1 enzyme trended higher in the healthy pregnant group than in the healthy nonpregnant group (p = 0.067), and was higher in the pregnant group with a history of idiopathic REPL than in the nonpregnant group with a history of idiopathic REPL (p = 0.041). Conclusions: Despite there being no detected association between PON1 activities or genotype and idiopathic REPL, we showed that AREase activity increased during early gestation. New studies, including longitudinal changes in serum AREase activity throughout normal pregnancy, should be carried out to further evaluate the association between PON encoded enzymatic activities and early gestational pathophysiology.
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Affiliation(s)
- Ebru Öztürk
- 1 Bahceci Health Group, IVF Center, Istanbul, Turkey
| | - Sacide Pehlivan
- 2 Department of Medical Biology and Genetics, Istanbul Medical School, Istanbul University, Istanbul, Turkey
| | - Caglayan Ozcan
- 3 Department of Obstetrics and Gynecology, Medical School, Gaziantep University, Istanbul, Turkey
| | - Mete Gurol Ugur
- 3 Department of Obstetrics and Gynecology, Medical School, Gaziantep University, Istanbul, Turkey
| | - Ozcan Balat
- 3 Department of Obstetrics and Gynecology, Medical School, Gaziantep University, Istanbul, Turkey
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Parisi F, di Bartolo I, Savasi VM, Cetin I. Micronutrient supplementation in pregnancy: Who, what and how much? Obstet Med 2019; 12:5-13. [PMID: 30891086 PMCID: PMC6416688 DOI: 10.1177/1753495x18769213] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 03/05/2018] [Indexed: 12/22/2022] Open
Abstract
Pregnancy represents a period of major physiological and metabolic change, aiming to ensure proper fetal growth and development, as well as maternal preservation. This review focuses on maternal nutrition, and particularly on micronutrient deficiencies and supplementation during pregnancy. Nutrient deficiencies and consequences in pregnant women are presented, with an overview of current recommendations for dietary supplementation in pregnancy, even considering the risk of micronutrient overload. Appropriate universal supplementation and prophylaxis/treatment of nutritional needs currently appear to be the most cost-effective goal in low-income countries, thus ensuring adequate intake of key elements including folate, iron, calcium, vitamin D and A. In high-income countries, a proper nutritional assessment and counselling should be mandatory in obstetric care in order to normalize pregestational body mass index, choose a healthy dietary pattern and evaluate the risk of deficiencies.
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Affiliation(s)
- F Parisi
- Center for Fetal Research Giorgio Pardi, Department
of Biomedical and Clinical Sciences, Università degli Studi di Milano, Hospital
Luigi Sacco, Unit of Obstetrics and Gynecology, Milan, Italy
| | - I di Bartolo
- Center for Fetal Research Giorgio Pardi, Department
of Biomedical and Clinical Sciences, Università degli Studi di Milano, Hospital
Luigi Sacco, Unit of Obstetrics and Gynecology, Milan, Italy
| | - VM Savasi
- Center for Fetal Research Giorgio Pardi, Department
of Biomedical and Clinical Sciences, Università degli Studi di Milano, Hospital
Luigi Sacco, Unit of Obstetrics and Gynecology, Milan, Italy
| | - I Cetin
- Center for Fetal Research Giorgio Pardi, Department
of Biomedical and Clinical Sciences, Università degli Studi di Milano, Hospital
Luigi Sacco, Unit of Obstetrics and Gynecology, Milan, Italy
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A novel biocompatible chitosan–Selenium nanoparticles (SeNPs) film with electrical conductivity for cardiac tissue engineering application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:151-160. [DOI: 10.1016/j.msec.2018.06.036] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 04/08/2018] [Accepted: 06/16/2018] [Indexed: 02/07/2023]
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Abstract
Selenium (Se) is an essential trace element of significant importance in human health. Diet is the major source of Se, and intake of this element depends on its concentration in food sources as well as the amount of those sources consumed. Unfortunately, daily dietary intake of Se in most European countries is generally low, ∼30-40μg/day, compared with the recommended dietary allowance, ∼55 and 70μg/day for adult females and males, respectively. The importance of Se as an essential trace element is linked to its role as selenocysteine in a number of selenoproteins including antioxidant enzymes glutathione peroxidases (GSH-Pxs), thioredoxin reductases (TrxRs), and selenoprotein P (SePP). These enzymes protect tissues against the damaging effect of reactive oxygen species (ROS) and other endogenous products of cellular metabolism implicated in DNA damage and potentially leading to mutagenesis, cell death, and carcinogenesis. Reduced body Se and antioxidant enzyme activity during pregnancy results in oxidative stress within tissues contributing to premature birth, miscarriage, preeclampsia, and intrauterine growth retardation. Because placenta development is highly dependent on oxygen status, uncontrolled ROS formation is likely detrimental. Despite these findings, the role of Se and Se-dependent enzymes in pregnancy remains controversial. The objective of this review is to explore Se status in pregnancy with respect to adverse outcomes. Effects related to decreased antioxidant activity and increased oxidative stress will be highlighted.
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Affiliation(s)
- Bronislaw A Zachara
- Department of Cosmetology and Physiotherapy, Higher School of Health Sciences, Bydgoszcz, Poland.
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11
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Ghneim HK, Alshebly MM. Biochemical Markers of Oxidative Stress in Saudi Women with Recurrent Miscarriage. J Korean Med Sci 2016; 31:98-105. [PMID: 26770044 PMCID: PMC4712587 DOI: 10.3346/jkms.2016.31.1.98] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 08/25/2015] [Indexed: 01/21/2023] Open
Abstract
This study was undertaken to investigate the antioxidant/oxidant status in recurrent miscarriage patients. Antioxidants including glutathione peroxidase (GPx), catalase (CAT), glutathione reductase (GR), reduced glutathione (GSH) and selenium (Se), as well as the oxidants hydrogen peroxide (H2O2), oxidised glutathione (GSSG) and lipid peroxidation were assayed in plasma, whole blood and placental tissue of non-pregnant women (NP), healthy pregnant women (HP), and recurrent miscarriage (RM) patients. Results indicated that all antioxidant activities and levels in plasma and whole blood of HP women were consistently moderately lower, and much more significantly lower in RM patients when both were compared to those seen in NP women (P<0.05 and P<0.001, respectively). Furthermore, whereas plasma antioxidant activities and levels were significantly lower in RM patients, those of whole blood and placental tissue were much more significantly lower when compared with HP women (P<0.001). Concurrent with these findings there were consistent increases of equal statistical significance and magnitude in the levels of all investigated oxidants assayed in all samples when compared in between subjects of the study as indicated above. Data thus illustrated a distinct shift in favor of oxidative reactions and reactive oxygen species (ROS) generation, and very significant decreases in the GSH/GSSG ratios in whole blood and placental tissue of RM patients when compared to HP and NP women (P<0.001). The above noted oxidative stress could have been a major causative factor of recurrent miscarriage.
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Affiliation(s)
- Hazem K. Ghneim
- Chair of Medical and Molecular Genetics, Department of Clinical Laboratory Science, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mashael M. Alshebly
- Department of Obstetrics and Gynecology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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12
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Pieczyńska J, Grajeta H. The role of selenium in human conception and pregnancy. J Trace Elem Med Biol 2015; 29:31-8. [PMID: 25175508 DOI: 10.1016/j.jtemb.2014.07.003] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 07/09/2014] [Accepted: 07/11/2014] [Indexed: 10/25/2022]
Abstract
Selenium (Se) is a trace element essential for the appropriate course of vital processes in the human body. It is also a constituent of the active center of glutathione peroxidase that protects cellular membranes against the adverse effects of H2O2 lipid peroxides. Epidemiological surveys have demonstrated that selenium deficiency in the body may contribute to an increased risk for certain neoplasmic diseases (including colonic carcinoma, gastric carcinoma, pulmonary carcinoma and prostate carcinoma), as well as diseases of the cardiovascular, osseous and nervous systems. Apart from its cancer prevention and antioxidative activities, selenium protects the body against detrimental effects of heavy metals and determines the proper functioning of the immunological system. Furthermore, selenium plays a significant role in the undisturbed functioning of the reproductive system. Many studies have addressed correlations between its intake and fertility as well as disorders of procreation processes. Selenium deficiencies may lead to gestational complications, miscarriages and the damaging of the nervous and immune systems of the fetus. A low concentration of selenium in blood serum in the early stage of pregnancy has been proved to be a predictor of low birth weight of a newborn. A deficiency of this element may also cause infertility in men by causing a deterioration in the quality of semen and in sperm motility. For this reason, supplementation in the case of selenium deficiencies in the procreation period of both women and men is of utmost significance.
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Affiliation(s)
- Joanna Pieczyńska
- Department of Food Science and Dietetics, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland.
| | - Halina Grajeta
- Department of Food Science and Dietetics, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland
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13
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Thomas VV, Knight R, Haswell SJ, Lindow SW, van der Spuy ZM. Maternal hair selenium levels as a possible long-term nutritional indicator of recurrent pregnancy loss. BMC WOMENS HEALTH 2013; 13:40. [PMID: 24148900 PMCID: PMC4015529 DOI: 10.1186/1472-6874-13-40] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 10/08/2013] [Indexed: 12/04/2022]
Abstract
Background Approximately 1% of all couples trying to conceive will suffer from recurrent pregnancy loss (RPL). Nutritional deficiencies have been postulated as a possible cause of RPL and in particular, selenium deficiency has been associated with reproductive failure in animal studies and more recently, in some human studies. This study was undertaken to assess the maternal hair selenium levels in women with RPL without an identified cause and to compare these results with those of women with successful reproductive histories. Methods Twenty four patients with RPL and twenty four control subjects with at least one successful pregnancy and no pregnancy failures, who were matched for age and ethnicity, were recruited. A questionnaire was completed, which included demographic and social information and a dietary history. Hair samples were collected and analyzed for selenium content by inductively coupled plasma mass spectrometry. Results The control subjects had a higher mean income and had completed more years of education compared with the RPL patients. There was no significant difference in the intake of selenium rich foods between the 2 groups. The patients, however, consumed significantly more fruit, cheese, potatoes and chocolate than the controls. The median (range) selenium content was 0.80 ppm (0.19-4.15) and 0.68 ppm (0.43-3.76) in patients and controls respectively (Mann Whitney U test 209.5 p = 0.74). Conclusions While there were significant differences in the 2 groups with regard to resources, education and diet our results show that hair selenium concentrations and dietary selenium intake, were similar in the two groups. Both groups had low levels of this important element.
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Affiliation(s)
- Viju V Thomas
- Department of Obstetrics and Gynaecology, Faculty of Health Sciences, Groote Schuur Hospital, University of Cape Town, 7937 Cape Town, South Africa.
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Abdulah R, Noerjasin H, Septiani L, Defi IR, Suradji EW, Puspitasari IM, Barliana MI, Yamazaki C, Nakazawa M, Koyama H. Reduced serum selenium concentration in miscarriage incidence of Indonesian subjects. Biol Trace Elem Res 2013; 154:1-6. [PMID: 23695728 DOI: 10.1007/s12011-013-9701-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Accepted: 05/09/2013] [Indexed: 11/24/2022]
Abstract
Selenium is an essential nutrient for human health, and maternal selenium concentration has been reported to be associated with pregnancy outcome. To further investigate the possible role of selenium (Se) in miscarriage, we conducted a case-control study to evaluate the correlations among selenium status, glutathione peroxidase activity, and spontaneous abortion. A total of 46 subjects with normal pregnancies and 25 subjects with spontaneous abortion were recruited, and their serum selenium concentrations and serum glutathione peroxidase activities were analyzed. The total serum selenium concentrations in subjects with normal pregnancies were significantly higher than those of subjects with spontaneous abortion; however, the glutathione peroxidase activities were similar in both groups. We further separated the subjects into smoking and nonsmoking groups, and the logistic regression analysis suggested that total serum selenium concentration, but not serum glutathione peroxidase activity or smoking, was significantly correlated with the incidence of miscarriage. The present study thus reaffirms that low serum selenium levels are associated with miscarriage and that selenium plays an important role in pregnancy maintenance.
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Affiliation(s)
- Rizky Abdulah
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Jl. Raya Bandung Sumedang Km. 21, Jatinangor 45363, Indonesia.
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Benammar A, Sermondade N, Faure C, Dupont C, Cedrin-Durnerin I, Sifer C, Hercberg S, Levy R. Nutrition et fausses couches spontanées : une revue de la littérature. ACTA ACUST UNITED AC 2012; 40:162-9. [DOI: 10.1016/j.gyobfe.2012.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Accepted: 09/07/2011] [Indexed: 12/14/2022]
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Mistry HD, Broughton Pipkin F, Redman CWG, Poston L. Selenium in reproductive health. Am J Obstet Gynecol 2012; 206:21-30. [PMID: 21963101 DOI: 10.1016/j.ajog.2011.07.034] [Citation(s) in RCA: 172] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 07/12/2011] [Accepted: 07/22/2011] [Indexed: 02/07/2023]
Abstract
Selenium is an essential trace element of importance to human biology and health. Increasing evidence suggests that this mineral plays an important role in normal growth and reproduction in animals and humans, and selenium supplementation is now recommended as part of public health policy in geographical areas with severe selenium deficiency in soil. This review addresses the biological functions of selenium followed by a detailed review of associations between selenium status and reproductive health. In many countries, selenium dietary intake falls below the recommended nutrient intakes and is inadequate to support maximal expression of the selenoenzymes. Numerous reports implicate selenium deficiency in several reproductive and obstetric complications including male and female infertility, miscarriage, preeclampsia, fetal growth restriction, preterm labor, gestational diabetes, and obstetric cholestasis. Currently, there is inadequate information from the available small intervention studies to inform public health strategies. Larger intervention trials are required to reinforce or refute a beneficial role of selenium supplementation in disorders of reproductive health.
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Affiliation(s)
- Hiten D Mistry
- Maternal and Fetal Research Unit, Division of Women's Health, King's College London, United Kingdom.
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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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Derbyshire E, Davies GJ, Costarelli V, Dettmar PW. Habitual micronutrient intake during and after pregnancy in Caucasian Londoners. MATERNAL & CHILD NUTRITION 2009; 5:1-9. [PMID: 19161540 PMCID: PMC6860529 DOI: 10.1111/j.1740-8709.2008.00152.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Micronutrient status is of fundamental importance both upon conception and throughout pregnancy. There is an abundance of literature investigating nutrient intakes during individual trimesters of pregnancy but few studies have investigated baseline intakes of nutrients throughout gestation as a continuum. The current investigation set out to measure habitual micronutrient intakes at weeks 13, 25, 35 of pregnancy and 6 weeks postpartum using a prospective background information questionnaire, 4-7-day weighed food diary and postnatal questionnaire. Seventy-two primiparous, Caucasian Londoners were recruited at the study start with 42 completing the first, second, third trimester and postpartum study stages respectively. Study findings indicated that sodium intakes were significantly higher than UK guidelines throughout and after pregnancy (P < 0.001). Intakes of folate, iron, vitamin D, potassium, iodine and selenium were lower than UK recommendations during and after pregnancy, but to varying levels of statistical significance (P < 0.05). Only 23-38% of women met UK recommendations for folate (300 microg day(-1)) through dietary sources. Similarly, only a small percentage of women met dietary guidelines for iron (19-28%). The findings from the current study indicate that public health interventions may be required to help expectant mothers achieve an optimal diet, particularly after birth when dietary recommendations increase for some micronutrients.
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Affiliation(s)
- E Derbyshire
- Faculty of Food Clothing and Hospitality Management, Manchester Metropolitan University, Hollings Campus, Manchester, UK.
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Agarwal A, Gupta S, Sekhon L, Shah R. Redox considerations in female reproductive function and assisted reproduction: from molecular mechanisms to health implications. Antioxid Redox Signal 2008; 10:1375-403. [PMID: 18402550 DOI: 10.1089/ars.2007.1964] [Citation(s) in RCA: 198] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Physiological levels of reactive oxygen species (ROS) play an important regulatory role through various signaling transduction pathways in folliculogenesis, oocyte maturation, endometrial cycle, luteolysis, implantation, embryogenesis, and pregnancy. Persistent and elevated generation of ROS leads to a disturbance of redox potential that in turn causes oxidative stress (OS). Our literature review captures the role of ROS in modulating a range of physiological functions and pathological processes affecting the female reproductive life span and even thereafter (i.e., menopause). The role of OS in female reproduction is becoming increasingly important, as recent evidence suggest that it plays a part in conditions such as polycystic ovarian disease, endometriosis, spontaneous abortions, preeclampsia, hydatidiform mole, embryopathies, preterm labor, and intrauterine growth retardation. OS has been implicated in different reproductive scenarios and is detrimental to both natural and assisted fertility. Many extrinsic and intrinsic conditions exist in assisted reproduction settings that can be tailored to reduce the toxic effects of ROS. Laboratory personnel should avoid procedures that are known to be deleterious, especially when safer procedures that can prevent OS are available. Although antioxidants such as folate, zinc, and thiols may help enhance fertility, the available data are contentious and must be evaluated in controlled studies with larger populations.
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Affiliation(s)
- Ashok Agarwal
- Reproductive Research Center, Department of Obstetrics and Gynecology, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA.
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Gupta S, Agarwal A, Banerjee J, Alvarez JG. The role of oxidative stress in spontaneous abortion and recurrent pregnancy loss: a systematic review. Obstet Gynecol Surv 2007; 62:335-47; quiz 353-4. [PMID: 17425812 DOI: 10.1097/01.ogx.0000261644.89300.df] [Citation(s) in RCA: 182] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
UNLABELLED Human reproduction is not considered a highly efficient biological process. Before the end of the first trimester, 30%-50% of conceptions end in spontaneous abortion. Most losses occur at the time of implantation. 15%-20% of clinical pregnancies end in spontaneous abortions. Recurrent pregnancy loss is a frustrating clinical problem both for clinicians and patients. Recurrent pregnancy loss affects 0.5%-3% of women in the reproductive age group, and between 50%-60% of recurrent pregnancy losses are idiopathic. Oxidative stress-induced damage has been hypothesized to play a role in spontaneous abortion, idiopathic recurrent pregnancy loss, hydatidiform mole, defective embryogenesis, and drug-induced teratogenicity. Some studies implicate systemic and placental oxidative stress in the pathophysiology of abortion and recurrent pregnancy loss. Oxidant-induced endothelial damage, impaired placental vascularization and immune malfunction have all been proposed to play a role in the pathophysiology of idiopathic recurrent pregnancy loss. Oxidative stress-induced placental dysfunction may be a common cause of the multifactorial and polygenic etiologies of abortion, recurrent pregnancy loss, defective embryogenesis, hydatidiform mole, and drug-induced teratogenic effects. Oxidative stress-induced modification of phospholipids has been linked to the formation of antiphospholipid antibodies in the antiphospholipid syndrome. The objective of this review was to examine the association between oxidative stress, spontaneous abortion and recurrent pregnancy loss, based on the published literature. We conducted an extensive literature search utilizing the databases of Medline, CINAHL, and Cochrane from 1986 to 2005. The following keywords were used: oxidative stress, abortion, recurrent pregnancy loss, reactive oxygen species, antioxidants, fetal development, and embryopathies. We conducted an electronic search, as well as a manual search of cross-references. We have included all studies in the English language found in the literature focusing on oxidative stress and its association with abortions, recurrent pregnancy loss and drug-induced teratogenicity. The role of antioxidant vitamins for primary prevention of oxidative stress-induced pathologies needs to be investigated further. TARGET AUDIENCE Obstetricians & Gynecologists, Family Physicians. LEARNING OBJECTIVES After completion of this article, the reader should be able to state that the causes of spontaneous and recurrent abortion are multifaceted, however, some of the causes may be preventable and also explain that the role of oxidative stress during pregnancy and adverse pregnancy outcomes has a basis in pathophysiology, although the role of oxidative stress and the treatment of oxidative stress during or before pregnancy remains speculative.
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Affiliation(s)
- Sajal Gupta
- Reproductive Research Center, Cleveland Clinic, Cleveland, Ohio, USA
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Abstract
PURPOSE OF REVIEW This review examines whether nutritional supplements during pregnancy have a role to play in the health of the mother, outcome of pregnancy or health of the baby. It will put into context the increased use of nutritional supplements in pregnancy and whether there is an evidence base for this supplementation. RECENT FINDINGS Women are not consuming enough nutrients from their diet alone and food is depleted in many important minerals. There is increasing support that supplementation of specific vitamins, minerals and omega-3 fatty acids can have a positive impact on maternal health in terms of prevention of preeclampsia, miscarriage, preterm birth, low birthweight, gestational diabetes and also on the long-term health of the baby. There are some contradictory findings with antioxidants and prevention of preeclampsia, and these are discussed. SUMMARY With soil depletion, overfarming and transportation of foods over hundreds of miles with loss of nutrients en route, together with the increased use of convenience and fast foods, women can be over-fed, but under-nourished in our modern society. These can lead to nutrient deficiencies which can have an impact on the outcome of pregnancy. Evidence shows that supplementation can play a valuable role in the health of the pregnant mother and her baby. Emphasis must always be on eating a good diet, but given the limitations of the 21st century lifestyle and the nutritional content of food, good quality nutritional supplements should be used during pregnancy in combinations rather than isolated single nutrients.
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Backović D. Selen u ocuvanju zdravlja i nastanku bolesti. VOJNOSANIT PREGL 2005; 62:227-34. [PMID: 15790052 DOI: 10.2298/vsp0503227b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Dusan Backović
- Medicinski fakultet, Institut za higijenu i medicinsku ekologiju, Beograd.
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