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cobalt AND pregnancy

Haichong Wu, Kangfeng Jiang, Tao Zhang, Gan Zhao, Aftab Shaukat, Ganzhen Deng
During the first trimester of pregnancy in dairy cows, the fetus is mainly recognized by the expression of major histocompatibility complex class I (MHC-I) in the maternal immune system. Before the embryo begins to implant in the maternal uterus, it requires a long time to remodel and develop vessels in the placenta. During this stage, the embryos are exposed to a hypoxic environment. However, the expression of bovine MHC-I has not been determined in hypoxic bovine endometrial epithelial cells (bEECs). Hypoxia-inducible factor-1α (HIF-1α) is a marker for hypoxic conditions in cells...
January 25, 2018: Research in Veterinary Science
Chunmei Liang, Jianqing Wang, Xun Xia, Qunan Wang, Zhijuan Li, Ruiwen Tao, Yiran Tao, Haiyun Xiang, Shilu Tong, Fangbiao Tao
Cobalt (Co) is an essential trace element and has been suggested to be involved in blood pressure regulation, but few studies have focused on serum Co status during pregnancy and the risks of pregnancy-induced hypertension syndrome (PIH). The aim of this study was to prospectively assess the association between serum Co levels during pregnancy and the risks of PIH, and to explore how the maternal Co status contributes to the incidence of PIH. 3260 non-hypertensive women before pregnancy with singleton births in Ma'anShan birth cohort study (MABC) were recruited with the assessment of maternal Co concentrations, additionally, the levels of 7 inflammatory factors and 3 stress factors in placentas were also determined...
March 2018: Journal of Trace Elements in Medicine and Biology
Giray Bozkaya, Ibrahim Karaca, Ozge Fenercioglu, Suna Yildirim Karaca, Sibel Bilgili, Nuriye Uzuncan
BACKGROUND: Ectopic pregnancies constitute about 2% of all pregnancies which are the leading cause of pregnancy-related deaths and a considerable cause of maternal morbidity. Oxidative stress can lead to a number of pregnancy related diseases including miscarriage, eclampsia and preterm labor. Ischemia modified albumin (IMA) which reflects the oxidative stress may be used as a marker for ectopic pregnancy. Our aim was to compare the levels of IMA and total antioxidant status (TAS) in ectopic and normal pregnancies and to understand if IMA can be used as a marker to diagnose ectopic pregnancy...
January 8, 2018: Journal of Maternal-fetal & Neonatal Medicine
Bhavisha A Bakrania, Frank T Spradley, Simon C Satchell, David E Stec, John M Rimoldi, Rama S V Gadepalli, Joey P Granger
Preeclampsia is a pregnancy-specific disorder of maternal hypertension and reduced renal hemodynamics linked to reduced endothelial function. Placental ischemia is thought to be the culprit of this disease, as it causes the release of factors like tumor necrosis factor (TNF)-α that induce vascular endothelin-1 (ET-1) production. Interestingly, placental ischemia-induced hypertension in rats (reduced uterine perfusion pressure, RUPP model) is abolished by ETA receptor blockade, suggesting a critical role for ET-1...
December 6, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
Lovro Tkalčić, Berislav Budiselić, Miljenko Kovačević, Siniša Knežević, Slavica Kovačić, Damir Miletić, Vjekoslav Tomulić, Dimitrij Kuhelj
BACKGROUND: An aneurysm of the superior mesenteric artery (SMA) with a diameter of 2.2 cm was found incidentally on an ultrasound (US) examination in a 26-year-old woman. The only known risk factor was an intracranial aneurysm that was found on her grandmother's autopsy. Based on pregnancy planning and the current literature, endovascular management with a covered stent was proposed. CASE REPORT: Self-expandable, covered stent (Bard, Fluency(®)) was implanted using a single transfemoral approach...
2017: Polish Journal of Radiology
Siti A Sulaiman, Miles J De Blasio, M Lyn Harland, Kathryn L Gatford, Julie A Owens
Restricted growth before birth (IUGR) increases adult risk of Type 2 diabetes by impairing insulin sensitivity and secretion. Altered fetal one-carbon metabolism is implicated in developmental programming of adult health and disease by IUGR. Therefore, we evaluated effects of maternal dietary supplementation with methyl donors and cofactors (MMDS), designed to increase fetal supply, on insulin action in the spontaneously IUGR twin lamb. In vivo glucose-stimulated insulin secretion and insulin sensitivity were measured at days 12-14 in singleton controls (CON, n = 7 lambs from 7 ewes), twins (IUGR, n = 8 lambs from 8 ewes), and twins from ewes that received MMDS (2 g rumen-protected methionine, 300 mg folic acid, 1...
October 1, 2017: American Journal of Physiology. Endocrinology and Metabolism
Xiaobing Liu, Yu Zhang, Jianhua Piao, Deqian Mao, Yajie Li, Weidong Li, Lichen Yang, Xiaoguang Yang
The development of reference values of trace elements is recognized as a fundamental prerequisite for the assessment of trace element nutritional status and health risks. In this study, a total of 1400 pregnant women aged 27.0 ± 4.5 years were randomly selected from the China Nutrition and Health Survey 2010-2012 (CNHS 2010-2012). The concentrations of 14 serum trace elements were determined by high-resolution inductively coupled plasma mass spectrometry. Reference values were calculated covering the central 95% reference intervals (P2...
March 21, 2017: Nutrients
Lissa N Francois, Ludwik Gorczyca, Jianyao Du, Kristin M Bircsak, Elizabeth Yen, Xia Wen, Mei-Juan Tu, Ai-Ming Yu, Nicholas P Illsley, Stacy Zamudio, Lauren M Aleksunes
INTRODUCTION: The BCRP/ABCG2 efflux transporter protects the developing fetus by limiting the transplacental transfer of drugs and chemicals and prevents the apoptosis of trophoblasts. The purpose of this study was to determine whether hypoxia-related signaling alters placental BCRP expression and function in vitro and in human pregnancies. METHODS: Human BeWo choriocarcinoma cells were treated with the hypoxia mimetic, cobalt chloride (CoCl2 ), or 3% oxygen for 24-48 h...
March 2017: Placenta
Mary E Ingle, Michael S Bloom, Patrick J Parsons, Amy J Steuerwald, Pamela Kruger, Victor Y Fujimoto
PURPOSE: A hypothesis-generating pilot study exploring associations between essential trace elements measured in follicular fluid (FF) and urine and in vitro fertilization (IVF) endpoints. METHODS: We recruited 58 women undergoing IVF between 2007 and 2008, and measured cobalt, chromium, copper, manganese, molybdenum, and zinc in FF (n = 46) and urine (n = 45) by inductively coupled plasma mass spectrometry (ICP-MS). We used multivariable regression models to assess the impact of FF and urine trace elements on IVF outcomes, adjusted for age, body mass index, race, and cigarette smoking...
February 2017: Journal of Assisted Reproduction and Genetics
Lailai Yan, Bin Wang, Zhenjiang Li, Yaqiong Liu, Wenhua Huo, Jingyu Wang, Zhiwen Li, Aiguo Ren
BACKGROUND: The relationship between essential trace metals (ETMs) and the risk of neural tube defects (NTDs) is still unclear. One of the challenges is to evaluate the intake of ETMs of women during their early period of pregnancy. We proposed the hypothesis that an ETM deficiency in women during their early period of pregnancy is associated with an elevated risk of NTDs in offspring. METHODS: We recruited 191 women with NTD-affected pregnancies (case group) and 261 women who delivered healthy infants (control group)...
February 15, 2017: Birth defects research
Rihwa Choi, Jiyu Sun, Heejin Yoo, Seonwoo Kim, Yoon Young Cho, Hye Jeong Kim, Sun Wook Kim, Jae Hoon Chung, Soo-Young Oh, Soo-Youn Lee
This prospective study sought to investigate serum levels of trace elements (cobalt, copper, zinc, and selenium) and to assess their effects on pregnancy and neonatal outcomes. Serum levels of trace elements in 245 Korean pregnant women (median gestational age at delivery was 39 + 4 weeks and interquartile range was 38 + 4-40 + 1 weeks) were compared with those of 527 general adults and those of previous studies in other ethnic groups. Pregnancy and neonatal outcomes including gestational diabetes, preeclampsia, neonatal birth weight, and congenital abnormalities were assessed...
November 23, 2016: Nutrients
Jyotirmayee Bahinipati, Prakash Chandra Mohapatra
INTRODUCTION: Normal pregnancy is always associated with immense stress in order to accommodate the increasing demands of the developing fetus. Various metabolic changes along with vascular remodeling occur in maternal system. Due to this, pregnancy is always associated with oxidative stress and generation of Reactive Oxygen Species (ROS). Ischemia Modified Albumin (IMA) generated by ROS is found to be sensitive and early biochemical marker of ischemic heart disease and now used as an important marker to distinguish between ischemic and non-ischemic pathologies...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
C Abán, N Martinez, C Carou, I Albamonte, A Toro, A Seyahian, A Franchi, G Leguizamón, D Trigubo, A Damiano, M Farina
During pregnancy, apoptosis is a physiological event critical in the remodeling and aging of the placenta. Increasing evidence has pointed towards the relevance of endocannabinoids (ECs) and hypoxia as modulators of trophoblast cell death. However, the relation between these factors is still unknown. In this report, we evaluated the participation of ECs in placental apoptosis induced by cobalt chloride (CoCl2), a hypoxia mimicking agent that stabilizes the expression of hypoxia inducible factor-1 alpha (HIF-1α)...
October 2016: Apoptosis: An International Journal on Programmed Cell Death
R S Marques, R F Cooke, M C Rodrigues, B I Cappellozza, R R Mills, C K Larson, P Moriel, D W Bohnert
Eighty-four multiparous, nonlactating, pregnant Angus × Hereford cows were ranked by pregnancy type (56 AI and 28 natural service), BW, and BCS and allocated to 21 drylot pens at the end of their second trimester of gestation (d 0). Pens were assigned to receive forage-based diets containing 1) sulfate sources of Cu, Co, Mn, and Zn (INR); 2) an organic complexed source of Cu, Mn, Co, and Zn (AAC; Availa 4; Zinpro Corporation, Eden Prairie, MN); or 3) no supplemental Cu, Co, Mn, and Zn (CON). Diets were offered from d 0 until calving and formulated to meet requirements for energy, protein, macrominerals, Se, I, and vitamins...
March 2016: Journal of Animal Science
Lorena Bermúdez, Consuelo García-Vicent, Jorge López, Maria Isabel Torró, Empar Lurbe
BACKGROUND: Trace elements are an essential nutritional component for humans and inadequate tissue-concentrations may have a significant effect on fetal size. OBJECTIVE: To measure ten trace elements in blood samples from mothers and their newborns, and assess their association with anthropometric characteristics at birth. The effects of other factors on fetal growth, such as biologic characteristics of the infant and mother, were analysed. METHODS: A cross-sectional study was conducted in the Hospital general, University of Valencia, Spain...
2015: Journal of Translational Medicine
Koumei Shirasuna, Narumi Shimamura, Kotomi Seno, Ayaka Ohtsu, Shogo Shiratsuki, Akihide Ohkuchi, Hirotada Suzuki, Shigeki Matsubara, Shiho Nagayama, Hisataka Iwata, Takehito Kuwayama
BACKGROUND/AIMS: The placenta is a vital organ for pregnancy. Many in vitro placental experiments are conducted under 21% O2; however, O2 tension could influence cellular functions, including cytokine secretion. We investigated the effects of oxygen tension between moderate hypoxia (5% O2) and normoxia (21% O2) by testing the hypothesis that moderate hypoxia regulates cellular phenotypes differently from normoxia in human trophoblast cells. METHODS AND RESULTS: Sw...
2015: Cellular Physiology and Biochemistry
C Linscheid, E Heitmann, P Singh, E Wickstrom, L Qiu, H Hodes, T Nauser, M G Petroff
INTRODUCTION: Maternal T-cells reactive towards paternally inherited fetal minor histocompatibility antigens are expanded during pregnancy. Placental trophoblast cells express at least four fetal antigens, including human minor histocompatibility antigen 1 (HA-1). We investigated oxygen as a potential regulator of HA-1 and whether HA-1 expression is altered in preeclamptic placentas. METHODS: Expression and regulation of HA-1 mRNA and protein were examined by qRT-PCR and immunohistochemistry, using first, second, and third trimester placentas, first trimester placental explant cultures, and term purified cytotrophoblast cells...
August 2015: Placenta
Marc Oppermann, Cornelia Borisch, Christof Schaefer
Metal-on-metal arthroplasty may lead to elevated blood chromium (Cr) and cobalt (Co) levels (>7 μg/l). Since carcinogenic, mutagenic, and teratogenic effects have been suggested, there is concern of pregnancy hazards for women with this condition. The 34-year-old patient has had a unilateral hip replacement for seven years. Before her pregnancy high Cr (47 μg/l) and Co (103 μg/l) blood concentrations were measured, but she did not develop any symptoms. A male infant was delivered after 41 weeks with first degree hypospadias...
June 2015: Reproductive Toxicology
Eric M George, Joey P Granger
OBJECTIVES: Despite intensive research, little in the way of new therapeutics has been developed for the preeclampsia patient. Several in vitro reports have suggested that heme oxygenase (HO) and its metabolic byproducts could inhibit known pathological pathways active in preeclampsia; specifically sFlt-1 production, oxidative stress, and innate immune activation. Here, we investigated the potential of HO induction, or the administration of its metabolic byproducts carbon monoxide and bilirubin, to act as a palliative in preclinical models of pregnancy-induced hypertension and preeclampsia...
January 2015: Pregnancy Hypertension
Clifford C Novak, Andrew R Hsu, Craig J Della Valle, Anastasia K Skipor, Patricia Campbell, Harlan C Amstutz, William A Jiranek, Aham Onyike, Xavier F Pombar, Joshua J Jacobs
There is concern regarding elevated metal ion levels in the blood during pregnancy and the potential fetal effects in women with metal-on-metal (MOM) implants. We obtained maternal and umbilical cord blood samples from 3 patients with a MOM hip arthroplasty and 7 control subjects without any metallic implants. Serum metal ion levels including chromium, cobalt, titanium, and nickel were tested using high-resolution sector-field inductively-coupled plasma-mass spectrometry. Mothers with MOM-bearing implants had significantly elevated levels of serum cobalt and chromium compared with control-group mothers, and umbilical cord blood from mothers with MOM implants also had significantly higher serum metal ion levels compared with control-group mothers...
December 2014: American Journal of Orthopedics
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