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https://www.readbyqxmd.com/read/28060899/longitudinal-profiles-of-thyroid-hormone-parameters-in-pregnancy-and-associations-with-preterm-birth
#1
Lauren E Johns, Kelly K Ferguson, Thomas F McElrath, Bhramar Mukherjee, Ellen W Seely, John D Meeker
INTRODUCTION: Overt thyroid disease in pregnancy is associated with numerous maternal and neonatal complications including preterm birth. Less is known about the contribution of trimester-specific subclinical alterations in individual thyroid hormones, especially in late gestation, on the risk of preterm birth. Herein, we examined the associations between subclinical changes in maternal thyroid hormone concentrations (TSH, total T3, free and total T4), measured at multiple time points in pregnancy, and the odds of preterm birth in pregnant women without clinical thyroid disease...
2017: PloS One
https://www.readbyqxmd.com/read/28056690/2016-guidelines-of-the-american-thyroid-association-for-the-diagnosis-and-management-of-thyroid-disease-during-pregnancy-and-the-postpartum
#2
Erik K Alexander, Elizabeth N Pearce, Gregory A Brent, Rosalind S Brown, Herbert Chen, Chrysoula Dosiou, William Grobman, Peter Laurberg, John H Lazarus, Susan J Mandel, Robin Peeters, Scott Sullivan
BACKGROUND: Thyroid disease in pregnancy is a common clinical problem. Since the American Thyroid Association's (ATA's) guidelines for the management of these disorders were first published in 2011, significant clinical and scientific advances have occurred in the field. The aim of these guidelines is to inform clinicians, patients, researchers, and health policy makers on published evidence relating to the diagnosis and management of thyroid disease in women during pregnancy, preconception and the postpartum period...
January 6, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28049387/stimulation-of-thyroid-function-by-hcg-during-pregnancy-a-risk-factor-for-thyroid-disease-and-a-mechanism-for-known-risk-factors
#3
Tim Korevaar, Yolanda B de Rijke, Layal Chaker, Marco Medici, Vincent Wv Jaddoe, Eric Ap Steegers, Theo J Visser, Robin Peeters
BACKGROUND: Thyroid autoimmunity is a major risk factor for gestational thyroid disease and recently various other risk factors have been identified, including maternal age, BMI and parity. hCG is an important determinant of gestational thyroid function, yet it is unknown to what extent differences in hCG concentration affect the risk for thyroid disease. We have recently shown that TPOAb positivity impairs the thyroidal response to hCG stimulation, which may suggest that this is a mechanism through which thyroid autoimmunity acts as a risk factor for thyroid disease...
January 3, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28048979/adult-hippocampal-neurogenesis-is-impaired-by-transient-and-moderate-developmental-thyroid-hormone-disruption
#4
M E Gilbert, J H Goodman, J Gomez, A F M Johnstone, R L Ramos
The hippocampus maintains a capacity for neurogenesis throughout life, a capacity that is reduced in models of adult onset hypothyroidism. The effects of developmental thyroid hormone (TH) insufficiency on neurogenesis in the adult hippocampus, however, has not been examined. Graded degrees of TH insufficiency were induced in pregnant rat dams by administration of 0, 3 or 10ppm of 6-propylthiouracil (PTU) in drinking water from gestational day (GD) 6 until weaning. Body, brain, and hippocampal weight were reduced on postnatal day (PN) 14, 21, 78 and hippocampal volume was smaller at the 10 but not 3ppm dose level...
December 31, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/28048806/su-g-iep4-05-experience-with-a-practical-approach-to-the-release-of-radioactive-patients-from-radiation-safety-isolation
#5
R Wendt, W Erwin, A Fisher, S Jones, S Jimenez, F Wong, A Jessop
PURPOSE: The radioactive patient releases of the nuclear medicine department in a large cancer center were analyzed to compare the estimated doses to others to the regulatory limit and institutional targets and to gauge how onerous the patients' instructions were. METHODS: In-house software that implements the NUREG 1556 approach and further considers fellow travelers, children and pregnant women and members of the public following Siegel, et al., is used to calculate release timing and to provide patients with individualized instructions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28040126/prediction-of-gestational-diabetes-mellitus-at-first-trimester-in-low-risk-pregnancies
#6
Pınar Kumru, Resul Arisoy, Emre Erdogdu, Oya Demirci, Mustecep Kavrut, Cem Ardıc, Nihan Aslaner, Aysen Ozkoral, Aktug Ertekin
OBJECTIVE: We aimed to assess the relationship among the sex hormone-binding globulin (SHBG), homeostasis model assessment (HOMA), glycosylated hemoglobin (HbA1c), and cholesterol panel values to predict subsequent gestational diabetes mellitus (GDM) in low-risk pregnancies. MATERIALS AND METHODS: Thirty-eight pregnant women with GDM and 295 low-risk pregnant women without GDM were included in this study. Maternal blood samples were obtained during the first trimester examination to determine the SHBG, HbA1c, fasting blood glucose, insulin, thyroid stimulating hormone (TSH), free thyroxine, total cholesterol, triglycerides (TG), high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol (LDL-C) levels...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28039875/first-trimester-isolated-maternal-hypothyroxinemia-adverse-maternal-metabolic-profile-and-impact-on-the-obstetrical-outcome
#7
Raluca Maria Furnica, Damien Gruson, John H Lazarus, Dominique Maiter, Pierre Bernard, Chantal Daumerie
BACKGROUND: Isolated maternal hypothyroxinemia (IH) is defined as low maternal FT4 (<5(th) percentile) and normal TSH. There is concern on its potential negative effects on the mother and offspring. OBJECTIVE: We aimed to evaluate the prevalence of IH and to assess the consequences of hypothyroxinemia on the maternal and foetal outcomes. SUBJECTS AND METHODS: From a total of 1300 consecutive pregnant women recruited during the prenatal screen (mean gestational age, 11...
December 31, 2016: Clinical Endocrinology
https://www.readbyqxmd.com/read/28028344/colloid-goiter-in-ectopic-thyroid-tissue-presenting-as-submandibular-swelling-with-a-coexisting-functional-orthotopic-thyroid-gland-in-a-pregnant-female
#8
Renuka Verma, Sumiti Gupta, Rajnish Kalra, Rajeev Sen, Swagatika Samal, Jyoti Sharma, Shivani Malik
No abstract text is available yet for this article.
October 2016: Journal of Cytology
https://www.readbyqxmd.com/read/28006755/partitioning-of-polybrominated-biphenyl-ethers-from-mother-to-fetus-and-potential-health-related-implications
#9
Mei-Yun Zheng, Xing-Hong Li, Yun Zhang, You-Lin Yang, Wen-Yue Wang, Yuan Tian
Presently, knowledge on the partitioning of polybrominated biphenyl ethers (PBDEs) from mother to fetus and the relationship between PBDE exposure and the levels of thyroid hormones (THs) needs to be extended further. In the present study, we investigated the concentrations of PBDEs in paired mother-fetus samples from 72 pregnant women in Wenling, China. The detection of PBDE concentration suggested that the expectant women living in Wenling for over 20 years might be highly exposed to PBDEs, which is largely ascribed to e-waste recycling activities in the local environment...
December 10, 2016: Chemosphere
https://www.readbyqxmd.com/read/27994875/management-of-metastatic-thyroid-cancer-in-pregnancy-risk-and-uncertainty
#10
Christopher W Rowe, Kirsten Murray, Andrew Woods, Sandeep Gupta, Roger Smith, Katie Wynne
: Metastatic thyroid cancer is an uncommon condition to be present at the time of pregnancy, but presents a challenging paradigm of care. Clinicians must balance the competing interests of long-term maternal health, best achieved by iatrogenic hyperthyroidism, regular radioiodine therapy and avoidance of dietary iodine, against the priority to care for the developing foetus, with inevitable compromise. Additionally, epidemiological and cellular data support the role of oestrogen as a growth factor for benign and malignant thyrocytes, although communicating the magnitude of this risk to patients and caregivers, as well as the uncertain impact of any pregnancy on long-term prognosis, remains challenging...
2016: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/27984425/effects-of-sample-handling-and-analytical-procedures-on-thyroid-hormone-concentrations-in-pregnant-women-s-plasma
#11
Gro D Villanger, Emily Learner, Matthew P Longnecker, Helga Ask, Heidi Aase, R Thomas Zoeller, Gun P Knudsen, Ted Reichborn-Kjennerud, Pål Zeiner, Stephanie M Engel
BACKGROUND: Maternal thyroid function is a critical mediator of fetal brain development. Pregnancy-related physiologic changes and handling conditions of blood samples may influence thyroid hormone biomarkers. We investigated the reliability of thyroid hormone biomarkers in plasma of pregnant women under various handling conditions. METHODS: We enrolled 17 pregnant women; collected serum and plasma were immediately frozen. Additional plasma aliquots were subjected to different handling conditions before the analysis of thyroid biomarkers: storage at room temperature for 24 or 48 hours before freezing and an extra freeze-thaw cycle...
December 12, 2016: Epidemiology
https://www.readbyqxmd.com/read/27981252/thyroid-hormone-dysfunction-during-pregnancy-a-review
#12
REVIEW
Aynadis Alemu, Betelihem Terefe, Molla Abebe, Belete Biadgo
Thyroid dysfunctions such as hypothyroidism, thyrotoxicosis and thyroid nodules may develop during pregnancy leading to abortion, placental abruptions, preeclampsia, preterm delivery and reduced intellectual function in the offspring. Epidemiological data have shown the significant role of maternal thyroid hormone in fetal neurologic development and maternal health. It has been suggested that the deleterious effects of thyroid dysfunction can also extend beyond pregnancy and delivery to affect neuro-intellectual development in the early life of the child...
November 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/27974077/urinary-iodine-concentration-identifies-pregnant-women-as-iodine-deficient-yet-school-aged-children-as-iodine-sufficient-in-rural-niger
#13
Sonja Y Hess, Césaire T Ouédraogo, Rebecca R Young, Ibrahim F Bamba, Sara Stinca, Michael B Zimmermann, K Ryan Wessells
OBJECTIVE: To assess iodine status among pregnant women in rural Zinder, Niger and to compare their status with the iodine status of school-aged children from the same households. DESIGN: Seventy-three villages in the catchment area of sixteen health centres were randomly selected to participate in the cross-sectional survey. SETTING: Salt iodization is mandatory in Niger, requiring 20-60 ppm iodine at the retail level. SUBJECTS: A spot urine sample was collected from randomly selected pregnant women (n 662) and one school-aged child from the same household (n 373)...
December 15, 2016: Public Health Nutrition
https://www.readbyqxmd.com/read/27966300/relationship-between-gestational-transient-thyrotoxicosis-and-vitamin-d
#14
Ferit Kerim Küçükler, Yasin Şimşek, Ümit Görkem, Berçem Ayçiçek Doğan, Serdar Güler
BACKGROUND/AIM: Gestational transient thyrotoxicosis (GTT) is a transient, mild hyperthyroidism that occurs early in pregnancy and is due to human chorionic gonadotropin. There is no clear information about why only some pregnant women develop GTT. Previous papers stated that vitamin D plays a role in thyroid functions. We aimed to evaluate the relationship between vitamin D and GTT. MATERIALS AND METHODS: Fifty-three patients diagnosed with GTT at the 6th to 10th weeks of gestation were included in the study (GTT group)...
November 17, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/27930576/hyperthyroidism-secondary-to-hysterosalpingography-an-extremely-rare-complication-a-case-report
#15
Guotao Ma, Rui Mao, Haixin Zhai
RATIONALE: Hysterosalpingography (HSG), a standard procedure for the evaluation of women with infertility and repetitive pregnancy loss, is associated with complications such as uterine perforation, infection, allergic reactions, syncope, hemorrhage and shock, and pulmonary or retinal embolus. However, hyperthyroidism has not been reported as one of its complications. PATIENT CONCERNS AND DIAGNOSES: We report the case of a 33-year-old euthyroid woman who presented to our hospital with palpitation, hand tremor, fatigue, and excessive sweating after HSG...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27927272/ethnic-differences-in-preterm-birth-risks-for-pregnant-women-with-thyroid-dysfunction-or-autoimmunity-a-meta-analysis
#16
Min Li, Shao Wei Wang, Feng Li Wu, Jin Shi, Pu Lin Yu, Xiu Ling Peng, Liang Sun
OBJECTIVE: Abnormal maternal thyroid function is associated with preterm birth. However, this association stays dubious in relevant individual studies for ethnic difference reasons and lack of direct supporting data. This study aimed to evaluate the relationship between preterm birth and thyroid dysfunction or autoimmunity based on ethnic differences. METHODS: Relevant studies were identified through searches of MEDLINE, Excerpta Medica, Wan Fang, China Biological Medicine disc, and China National Knowledge Infrastructure from inception to June 15, 2016...
October 2016: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/27916585/perinatal-exposure-to-glyphosate-based-herbicide-alters-the-thyrotrophic-axis-and-causes-thyroid-hormone-homeostasis-imbalance-in-male-rats
#17
Janaina Sena de Souza, Marina Malta Letro Kizys, Rodrigo Rodrigues da Conceição, Gabriel Glebocki, Renata Marino Romano, Tania Maria Ortiga-Carvalho, Gisele Giannocco, Ismael Dale Cotrim Guerreiro da Silva, Magnus Regios Dias da Silva, Marco Aurélio Romano, Maria Izabel Chiamolera
Glyphosate-based herbicides (GBHs) are widely used in agriculture. Recently, several animal and epidemiological studies have been conducted to understand the effects of these chemicals as an endocrine disruptor for the gonadal system. The aim of the present study was to determine whether GBHs could also disrupt the hypothalamic-pituitary-thyroid (HPT) axis. Female pregnant Wistar rats were exposed to a solution containing GBH Roundup(®)Transorb (Monsanto). The animals were divided into three groups (control, 5mg/kg/day or 50mg/kg/day) and exposed from gestation day 18 (GD18) to post-natal day 5 (PND5)...
December 1, 2016: Toxicology
https://www.readbyqxmd.com/read/27916508/development-of-gestation-specific-reference-intervals-for-thyroid-hormones-in-normal-pregnant-northeast-chinese-women-what-is-the-rational-division-of-gestation-stages-for-establishing-reference-intervals-for-pregnancy-women
#18
Jianhua Liu, Xiaojun Yu, Meng Xia, Hong Cai, Guixue Cheng, Lina Wu, Qiang Li, Ying Zhang, Mengyuan Sheng, Yong Liu, Xiaosong Qin
BACKGROUND: A laboratory- and region-specific trimester-related reference interval for thyroid hormone assessment of pregnant women was recommended. Whether the division by trimester is suitable requires verification. Here, we tried to establish appropriate reference intervals of thyroid-related hormones and antibodies for normal pregnant women in Northeast China. METHODS: A total of 947 pregnant women who underwent routine prenatal care were grouped via two methods...
December 2, 2016: Clinical Biochemistry
https://www.readbyqxmd.com/read/27910710/management-of-a-pregnant-woman-with-thyrotropinoma-a-case-report-and-review-of-the-literature
#19
Carolina M Perdomo, Jorge A Árabe, Miguel Á Idoate, Juan C Galofré
INTRODUCTION: Pituitary disorders during pregnancy are uncommon. The approach should include a close follow-up in order to reduce maternal and fetal risks associated with physiological changes during pregnancy or treatment side effects. MATERIALS AND METHODS: We report a 21-year-old woman with a thyroid-stimulating hormone-secreting pituitary macroadenoma and positive antithyroid antibodies. She was initially treated using transsphenoidal pituitary surgery. The patient relapsed 17-month post-surgery...
December 2, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27908602/kisspeptin-and-embryo-implantation-after-icsi
#20
Zehra Jamil, Syeda Sadia Fatima, Sara Arif, Faiza Alam, Rehana Rehman
A cross-sectional study was carried out at the Australian Concept Infertility Medical Centre from June 2014 to June 2015 to relate serum kisspeptin levels on human chorionic gonadotrophin (HCG) day with pregnancy outcome after intracytoplasmic sperm injection (ICSI). A total of 176 women aged 20 to 42 years, with regular menstrual cycles, normal thyroid function and prolactin levels selected for ICSI were included in the study. Patients with uterine fibroids, metabolic disorders, short agonist and antagonist protocol were excluded...
November 18, 2016: Reproductive Biomedicine Online
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