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thyroid pregnant

Sarah C Bath, Victor J M Pop, Victoria L Furmidge-Owen, Maarten Broeren, Margaret P Rayman
Background Though iodine deficiency in pregnancy is a matter of public-health concern, a functional measure of iodine status is lacking. The thyroid-specific protein, thyroglobulin (Tg), which reflects thyroid size, has shown promise as a functional measure in studies of children and adults, but data in pregnancy are sparse. In a cohort of mildly-to-moderately iodine-deficient pregnant women, we aimed to explore whether serum Tg is a sensitive functional biomarker of iodine status and to examine longitudinal change in Tg with gestational age...
October 20, 2016: Thyroid: Official Journal of the American Thyroid Association
Eunice López-Muñoz, Jorge Antonio Ibarra-Avalos, Rosario Guadalupe Chan-Verdugo, Leovigildo Mateos-Sánchez, Olivia Sánchez-Rodríguez
In order to determine the prevalence of overt and subclinical hypothyroidism, and isolated hypothyroxinemia during pregnancy, thyroid hormone reference values established by UMAE HGO4, IMSS in Mexico City and those suggested by the American Thyroid Association (ATA) were used. All pregnant patients, whose thyroid function was measured and whose pregnancy was monitored and resolved in UMAE HGO4, IMSS from 1 January to 31 December 2013, were included. Significant differences (p = .00419) were observed in the frequency of subclinical hypothyroidism, being higher when using ATA criteria (18...
October 20, 2016: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
Tim I M Korevaar, Eric A P Steegers, Victor J Pop, Maarten A Broeren, Layal Chaker, Yolanda B de Rijke, Vincent W V Jaddoe, Marco Medici, Theo J Visser, Henning Tiemeier, Robin P Peeters
CONTEXT: Thyroperoxidase antibody (TPOAb) positivity is the main risk factor for thyroid dysfunction during pregnancy and is consistently associated with premature delivery. However, the underlying mechanism is currently unknown. We hypothesized that TPOAb positivity may interfere with gestational thyroid stimulation induced by the pregnancy hormone human chorionic gonadotropin (hCG). DESIGN, SETTING AND PARTICIPANTS: TSH, FT4, TPOAbs and/or hCG concentrations were measured in early and late pregnancy of 7587 pregnant women from two Dutch population-based prospective cohorts (N=5924 Generation R; N=1663 HAPPY)...
October 18, 2016: Journal of Clinical Endocrinology and Metabolism
Sophia S Yu, Lindsay A Bischoff
Owing to the young median age of diagnosis, thyroid cancer in women can coincide with pregnancy and affect its management. The evaluation of a thyroid nodule in pregnant women is similar to that in nonpregnant women, but special consideration must be taken for the impact of a cancer diagnosis and its sequelae in pregnancy. The initial comprehensive exam for pregnant and nonpregnant women includes evaluation of the biochemical function and structure of the thyroid gland, and then fine-needle aspiration biopsy of any suspicious nodule...
October 14, 2016: Seminars in Reproductive Medicine
Xiaomei Zhang, Baoting Yao, Chenyan Li, Jinyuan Mao, Weiwei Wang, Xiaochen Xie, Xiaochun Teng, Cheng Han, Weiwei Zhou, Chenyang Li, Bin Xu, Lihua Bi, Tao Meng, Jianling Du, Shaowei Zhang, Zhengnan Gao, Liu Yang, Chenling Fan, Weiping Teng, Zhongyan Shan
BACKGROUND: Self-sequential longitudinal reference interval may be expected to minimize the inter-individual variation of thyroid function. Comparison between self-sequential longitudinal reference interval and cross-sectional reference interval in pregnancy has not been well investigated. The objective of this study is to establish a stringent self-sequential longitudinal reference interval (SLRI) of thyroid function in pregnant women and to compare it with the conventional cross-sectional reference interval (CSRI)...
October 12, 2016: Thyroid: Official Journal of the American Thyroid Association
Eric De Zoysa, Manjula Hettiarachchi, Chandrani Liyanage
BACKGROUND: Iodine deficiency and thyroid dysfunction during pregnancy is associated with number of adverse outcomes that includes mental and physical disabilities creating a huge human and economic burden in later life. Several indicators are used to assess the iodine status of a population: thyroid size by palpation and/or by ultrasonography, urinary iodine excretion and the blood thyroid hormone profile. METHODS: This prospective study was designed to assess the iodine nutrition during the course of pregnancy with reference to urine iodine concentration (UIC) and thyroid determinants among 425 pregnant women from Galle district, Sri Lanka...
October 12, 2016: BMC Pregnancy and Childbirth
Apuroopa Patil
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
F Acıbucu, D O Acıbucu, Ö B Akkar, H S Dokmetas
Introduction: Radioactive iodine (RAI) ablation treatment is used for patients diagnosed with well-differentiated thyroid cancer in order to reduce the risk of recurrence. RAI ablation treatment can adversely affect gonads in males and females. In this study, we aimed to determine ovary damage and infertility risk due to RAI, using serum anti-Müllerian hormone (AMH) level, in females who received RAI ablation treatment. Materials and Methods: 45 female patients who have not gone through the menopause and had received RAI ablation treatment for well-differentiated thyroid cancer in premenopausal period, and 40 healthy females as control groups were included in this study...
October 6, 2016: Experimental and Clinical Endocrinology & Diabetes
Shalini D Soechitram, Sietske A Berghuis, Theo J Visser, Pieter J J Sauer
BACKGROUND: Several studies have shown effects of polychlorinated biphenyls (PCBs) on serum thyroid hormone levels in pregnant woman and their infants, while other studies did not find such effects. How PCBs might affect thyroid hormone metabolism, is still unclear. Potential mechanisms are direct influence on the thyroid gland, binding to thyroid binding proteins, increased excretion or metabolism of thyroid hormones by deiodinases or sulfatases. It is also not well known whether the effect on thyroid hormone levels is caused by PCBs themselves, or by their hydroxylated metabolites (OH-PCBs)...
October 3, 2016: Science of the Total Environment
Stine Linding Andersen, Peter Laurberg
Hyperthyroidism in women who are of childbearing age is predominantly of autoimmune origin and caused by Graves' disease. The physiological changes in the maternal immune system during a pregnancy may influence the development of this and other autoimmune diseases. Furthermore, pregnancy-associated physiological changes influence the synthesis and metabolism of thyroid hormones and challenge the interpretation of thyroid function tests in pregnancy. Thyroid hormones are crucial regulators of early development and play an important role in the maintenance of a normal pregnancy and in the development of the fetus, particularly the fetal brain...
2016: International Journal of Women's Health
Melahat Atasever, Muberra Namli Kalem, Çiğdem Sönmez, Mehmet Murat Seval, Seda Sahin Aker, Tuncay Yuce, Acar Koç, Hakan Genc
OBJECTIVE: The aim of the study is to investigate the relationship between changes in serotonin levels during pregnancy and fibromyalgia syndrome(FS) and the relationships between FS and the physical/psychological state, biochemical and hormonal parameters, which may be related to the musculoskeletal system. STUDY DESIGN: This study is a prospective case-control study conducted with 277 pregnant women at the obstetric unit of Ankara University Faculty of Medicine, in the period between January and June 2015...
October 3, 2016: Journal of Maternal-fetal & Neonatal Medicine
Gi Su Lee, Joon Cheol Park, Jeong Ho Rhee, Jong In Kim
OBJECTIVE: The goal of this study was to evaluate the etiologies and clinical outcomes of Korean recurrent pregnancy loss (RPL) patients. And also, we investigated the differences between primary and secondary RPL patients, between two and three or more pregnancy losses. METHODS: One hundred seventy eight women diagnosed as RPL were enrolled. We performed chromosomal analysis, thyroid stimulating hormone, prolactin, blood glucose, plasminogen activator inhibitor-1, natural killer cell proportion, anticardiolipin antibodies, antiphospholipid antibodies, lupus anticoagulant, anti-β2glycoprotein-1 antibodies, antinuclear antibody, protein C, protein S, antithrombin III, homocysteine, MTFHR gene, factor V Leiden mutation, and hysterosalphingography/hysteroscopic evaluation...
September 2016: Obstetrics & Gynecology Science
Qiushi Wang, Chongdong Liu, Zhenyu Zhang
Since transthyretin (TTR) was discovered, it has been regarded as a serum protein carrier of thyroid hormones and retinol. However, many other important functions of TTR have been found recently, and current evidence suggests that it plays a role in human receptivity and normal pregnancy. TTR is abundant in the uterine cavity, uterine secretion, placenta, and serum of pregnant females in the peri-implantation uterus and the first trimester of pregnancy. It may be involved in the delivery of maternal thyroid hormones to the fetus...
2016: Critical Reviews in Eukaryotic Gene Expression
Tim I M Korevaar, Eric A P Steegers, Layal Chaker, Marco Medici, Vincent W V Jaddoe, Theo J Visser, Yolanda B de Rijke, Robin P Peeters
CONTEXT: During pregnancy, there is an increased demand for thyroid hormone. The pregnancy hormone human chorionic gonadotropin (hCG) is an important physiological stimulator of thyroid function. Already high-normal maternal FT4 concentrations are associated with a higher risk of pre-eclampsia. OBJECTIVE: To study our hypothesis that hCG concentrations can distinguish a physiological form of high thyroid function from a more pathological form of high thyroid function, and that the risk of pre-eclampsia would differ accordingly...
September 20, 2016: Journal of Clinical Endocrinology and Metabolism
K Hamasaki, R D Landes, A Noda, N Nakamura, Y Kodama
While it is generally believed that fetuses are at high risk of developing cancers, including leukemia, after low doses of radiation, it has been reported that atomic bomb survivors exposed in utero did not show a dose response for translocations in blood T lymphocytes when they were examined at approximately 40 years of age. Subsequent mouse studies confirmed that animals irradiated during the fetal stage did not show evidence of radiation effects in lymphocytes and bone marrow cells when they were examined after reaching adulthood...
September 14, 2016: Radiation Research
Li-Hua Zhang, Jing-Yan Li, Qi Tian, Shuang Liu, Hong Zhang, Sheng Liu, Jiu-Gen Liang, Xian-Ping Lu, Ning-Yi Jiang
The aims of the present study were to analyze the outcomes of pregnancy, after (131)I treatment, in patients of reproductive age with Graves' hyperthyroidism and to investigate the effects, if any, of the (131)I treatment on the mothers and newborns. From 2009 to 2014, 257 pregnant female patients with Graves' hyperthyroidism in the outpatients at the Department of Nuclear Medicine and 166 healthy pregnant women from the Department of Obstetrics at Sun Yat-Sen Memorial Hospital were included in our study. They were divided into a (131)I therapy group (n = 130) and an anti-thyroid drug (ATD) group (n = 127) according to their therapy before conception...
September 12, 2016: Journal of Radiation Research
Marie Margarete Meyerholz, Kirsten Mense, Matthias Linden, Mariam Raliou, Olivier Sandra, Hans-Joachim Schuberth, Martina Hoedemaker, Marion Schmicke
BACKGROUND: Before the onset of fetal thyroid hormone production, the transplacental delivery of maternal thyroid hormones is necessary for embryonic and fetal development. Therefore, the adaptation of maternal thyroid hormone metabolism may be important for pregnancy success and embryo survival. The aims of this study were to determine the thyroid hormone levels during the early peri-implantation period until day 18 and on the day of ovulation, to determine whether pregnancy success is dependent on a "normothyroid status" and to determine whether physiological adaptations in maternal thyroid hormone metabolism occur, which may be necessary to provide sufficient amounts of biologically active T3 to support early pregnancy...
2016: Acta Veterinaria Scandinavica
Yu Li, Ping Pan, Ping Yuan, Qi Qiu, Dongzi Yang
BACKGROUND: Resistant ovary syndrome (ROS) is a rare endocrine disorder characterized with hypergonadotrophic hypogonadism. Infertility is a common complaint of woman presenting with ROS, and little progress has been made in term of reproduction with the patient's own gamete. So far only one case report of live birth has been reported after in vitro maturation (IVM) of oocytes in a patient suffering from ROS in 2013. CASE PRESENTATION: A secondary infertile woman of 33 years-old was manifested with oligomenorrhea and markedly increased gonadotropin levels around postmenopausal range, but had normal antral follicle count, normal serum inhibin B and anti-Müllerian hormone levels...
September 6, 2016: Journal of Ovarian Research
Klaus Mann, Gerhard Hintze
Endocrine disorders may have an important influence on fertility, the course of a pregnancy and fetal development. For example, fertility is decreased and the risk of miscarriage is increased in women with autoimmune disorders, such as Addison's disease or autoimmune thyroiditis. Treatment of endocrine diseases in many cases has to be adapted during the course of a pregnancy. In patients with Addison's disease the dosage of hydrocortisone necessarily has to be increased. This is also valid for the time of delivery...
September 2016: Deutsche Medizinische Wochenschrift
J Thuróczy, J Szilágyi, L Müller, L Balogh
Thyroxine (T4) and triiodothyronine (T3) concentrations in pregnant and nonpregnant bitches were measured. The allantoic and amniotic fluid samples were collected separately in the third week of pregnancy, and fetal blood samples were collected in the fourth week of pregnancy. There was no difference between T4 results in the pregnant and nonpregnant animals, but the measured serum concentrations exceeded the healthy range for normal adults. Serum T4 concentrations were lower in the fetus than those in adults (P < 0...
July 21, 2016: Domestic Animal Endocrinology
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