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Thyroid stimulating hormone

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https://www.readbyqxmd.com/read/29028673/association-between-organophosphate-pesticide-exposure-and-thyroid-hormones-in-pregnant-women
#1
Yiwen Wang, Limei Chen, Caifeng Wang, Yi Hum, Yu Gao, Yijun Zhou, Rong Shi, Yan Zhang, Michihiro Kamijima, Jun Ueyama, Ying Tian
BACKGROUND: Use of organophosphate pesticides (OPs) is widespread in China. Although animal studies suggested that OP exposure could affect thyroid function, little is explored in human populations. METHODS: We investigated levels of OP exposure in pregnant women and the relationship between OPs and thyroid hormones in Shandong, China. We enrolled 637 pregnant women from April 2011 to December 2013. OP exposure was assessed by a questionnaire administered to the pregnant women in the hospital and by analyses of urinary dialkylphosphate (DAP) metabolites of OPs in pregnant women (n = 413)...
October 2017: Epidemiology
https://www.readbyqxmd.com/read/29028671/prenatal-and-childhood-exposure-to-phthalate-diesters-and-thyroid-function-in-a-9-year-follow-up-birth-cohort-study-taiwan-maternal-and-infant-cohort-study
#2
Han-Bin Huang, Chia-Jui Chuang, Pen-Hua Su, Chien-Wen Sun, Chien-Jen Wang, Ming-Tsang Wu, Shu-Li Wang
BACKGROUND: Phthalates are widely used in industry, personal care products, and medications. Recent studies have suggested that phthalate exposure alters thyroid hormones. However, longitudinal studies concerning the association between phthalate exposure and thyroid function in children are scant. Therefore, we examined the association between pre- and postnatal phthalate exposure and thyroid function in children born in 2000-2001. METHODS: We studied 181 mother-child pairs in central Taiwan and followed-up the children from 2000 to 2009 at 2, 5, and 8 years old...
October 2017: Epidemiology
https://www.readbyqxmd.com/read/29028638/malignant-hyperthermia-versus-thyroid-storm-in-a-patient-with-symptomatic-graves-disease-a-case-report
#3
Sara M Strowd, Michael B Majewski, Jennifer Asteris
Malignant hyperthermia and thyroid storm are intraoperative emergencies with overlapping symptoms but different treatment protocols. We faced this diagnostic dilemma in a 25-year-old patient with symptomatic hyperthyroidism, elevated free T3 and free T4, and low thyroid-stimulating hormone from Graves disease despite treatment with propranolol 80 mg daily and methimazole 40 mg every 8 hours. During thyroidectomy, he developed hyperthermia and hypercarbia without tachycardia. When the rate of rise of PaCO2 and temperature accelerated, we treated the patient for malignant hyperthermia, a diagnosis subsequently confirmed by genetic testing...
October 12, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/29026419/effect-of-vitamin-d-deficiency-treatment-on-thyroid-function-and-autoimmunity-markers-in-hashimoto-s-thyroiditis-a-double-blind-randomized-placebo-controlled-clinical-trial
#4
Parichehr Vahabi Anaraki, Ashraf Aminorroaya, Massoud Amini, Fatemeh Momeni, Awat Feizi, Bijan Iraj, Azamosadat Tabatabaei
BACKGROUND: The link between autoimmune thyroid diseases and Vitamin D deficiency has been reported. However, there are controversies in this regard. We conducted a double-blind randomized placebo-controlled clinical trial to investigate the effect of Vitamin D deficiency treatment on thyroid function and autoimmunity marker (thyroid peroxidase antibody [TPO-Ab]) in patients with Hashimoto's thyroiditis. MATERIALS AND METHODS: Fifty-six patients with Hashimoto's thyroiditis and Vitamin D deficiency (25-hydroxyvitamin D level ≤20 ng/mL) were randomly allocated into two groups to receive Vitamin D (50000 IU/week, orally) or placebo for 12 weeks, as Vitamin D-treated (n = 30) and control (n = 26) groups, respectively...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29026179/effects-of-prenatal-phthalate-exposure-on-thyroid-hormone-concentrations-beginning-at-the-embryonic-stage
#5
Hui Gao, Wanke Wu, Yuanyuan Xu, Zhongxiu Jin, Huihui Bao, Peng Zhu, Puyu Su, Jie Sheng, Jiahu Hao, Fangbiao Tao
Limited studies have consistently shown an association of phthalates exposure with thyroid hormones (THs) in pregnant women. However, it remains unknown on which specific phthalates can affect THs and whether any effects could differ by gestational age. In the present study, we investigated associations between serum concentrations of phthalate monoesters [monoethyl phthalate (MEP), mono-(n + iso)-butyl phthalate (MBP) and mono(2-ethylhexyl) phthalate (MEHP)] and THs [thyroid-stimulating hormone (TSH), total thyroxine (TT4) and free thyroxine (FT4)] in Chinese pregnant women...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29025782/olfactory-bulb-agenesis-with-normal-sexual-hormones
#6
Prayuth Tunsuriyawong, Krit Pongpirul, Tagann Chaisam, Petpring Prajuabpansri
An 18-year-old Caucasian man presented with a lack of sense of surrounding smell. The problem was first noticed when a family member discussed the smell of the food, which he had no idea what it was. The patient had normal development and sexual function, no history of trauma, surgery, chemical exposure or infection. Physical examination revealed no significant abnormalities. Smell threshold test using phenyl-ethyl-alcohol revealed bilateral anosmia. MRI showed bilateral aplastic olfactory bulbs and tracts associated with absent cortical growth of the olfactory sulci and asymmetrical gyrus rectus...
October 11, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29024619/korean-pediatric-reference-intervals-for-ft4-tsh-and-tpo-ab-and-the-prevalence-of-thyroid-dysfunction-a-population-based-study
#7
Han Hyuk Lim
BACKGROUND: The appropriate age-related reference intervals for thyroid-stimulating hormone (TSH) and free thyroxine (FT4) are important in interpreting the results of thyroid function tests in children and adolescents. However, these reference intervals are scanty. This study aimed to establish the reference intervals for FT4, TSH, and thyroid peroxidase antibody (TPO Ab), and identify the epidemiological prevalence of thyroid dysfunction in a Korean pediatric population. METHODS: The data from a sample of 2042 children and adolescents aged 10-18years who underwent a nationwide Korean representative sampling and cross-sectional survey with blood collection for a thyroid function test using an electrochemiluminescence immunoassay were evaluated...
October 9, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/29022126/a-systematic-review-of-cortisol-thyroid-stimulating-hormone-and-prolactin-in-peripartum-women-with-major-depression
#8
REVIEW
Mercedes J Szpunar, Barbara L Parry
Pregnancy and postpartum are periods of high susceptibility to major depression (MD) and other mood disorders. The peripartum period is also a time of considerable changes in the levels of hormones, including cortisol, thyroid-stimulating hormone (TSH), prolactin, gonadotropins, and gonadal steroids. To investigate the relationship between mood and hormonal changes during and after pregnancy, we reviewed published reports of hormonal measures during this time frame, searched via PubMed and Web of Science. Studies were included if women in the antepartum or postpartum periods were clinically diagnosed with MD, and if there were repeated measures of cortisol, TSH, or prolactin...
October 11, 2017: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/29021704/the-effect-of-red-ginseng-and-ginseng-leaves-on-the-substance-and-energy-metabolism-in-hypothyroidism-rats
#9
Hang Xiao, Cheng Tan, Guanlin Yang, Deqiang Dou
BACKGROUND: Recent studies have revealed that the properties Traditional Chinese Medicine is mostly associated with are substance and energy metabolism. Our study aimed to compare the effect of red ginseng (RG) (warm property) and ginseng leaves (GL; cold property) on the substance and energy metabolism of rats with hypothyroidism. MATERIALS AND METHODS: Rats were administered propylthiouracil intraperitoneally for 20 d to cause hypothyroidism. The reference group was orally administered Aconiti Lateralis Radix Praeparaia [FZ (Fuzi in Chinese)], while both the RG and GL groups were orally administrated crude drugs...
October 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29016579/iodine-and-thyroid-function-status-and-anti-thyroid-peroxidase-antibody-among-pregnant-women-in-eastern-nepal
#10
Lalit Narayan Chaudhary, Saroj Khatiwada, Basanta Gelal, Sharad Gautam, Madhab Lamsal, Hanoon Pokharel, Nirmal Baral
BACKGROUND: Iodine deficiency, thyroid dysfunction and development of thyroid autoimmunity during pregnancy may affect mother and the developing fetus. This study was carried out to find iodine status, thyroid dysfunction and thyroid autoimmunity among pregnant women. METHODS: Ninety two pregnant women from three districts of eastern Nepal (Sunsari, Morang and Jhapa) were enrolled for the study, and urine and blood samples were collected. Urinary iodine concentration (UIC), free thyroxine (free T4), thyroid stimulating hormone (TSH), thyroglobulin and anti-thyroid peroxidase (TPO) antibody levels were estimated...
September 8, 2017: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/28992708/-management-of-patients-with-thyroid-nodules-american-thyroid-association-guidelines-in-the-setting-of-czech-republic
#11
Jan Jiskra
Thyroid nodules are common finding. Most of them are of benign origin without thyroid dysfunction. Diagnosis is based on evaluation of thyroid function by assessment of serum thyroid stimulating hormone, and ultrasound for the purpose to identify the nodules which should be referred to fine needle aspiration biopsy (FNAB). The nodule size, ultrasound pattern and clinical risk factors should be considered before the FNAB is performed. The FNAB results should be categorized based on the risk of malignancy to improving a standardization of the patients management and minimizing number of false negative and false positive FNAB results...
2017: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/28989881/iodine-status-among-subclinical-and-overt-hypothyroid-patients-by-urinary-iodine-assay-a-case-control-study
#12
Uma Shrestha, Narayan Gautam, Krishna Kumar Agrawal, Amit Chandra Jha, Archana Jayan
OBJECTIVES: The objective of the study was to assess the differences of iodine status as measured by urinary iodine excretion (UIE) between cases of hypothyroidism and healthy controls. MATERIALS AND METHODS: The study was conducted in cases with subclinical hypothyroidism (n = 58) and overt hypothyroidism (n = 41) and compared with age- and sex-matched healthy euthyroid controls (n = 52) attending Universal College of Medical Sciences Teaching Hospital, Bhairahawa, Nepal...
September 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28989877/postpartum-follow-up-in-women-diagnosed-with-subclinical-hypothyroidism-during-pregnancy
#13
K Neelaveni, K V S Hari Kumar, Rakesh Sahay, Jayanthy Ramesh
BACKGROUND: Management guidelines about the thyroid disease in pregnancy are silent about the postpartum course of new onset subclinical hypothyroidism (SCH). Hence, we analyzed the 2 years outcome of SCH diagnosed during pregnancy. MATERIALS AND METHODS: We conducted this retrospective study using the medical records of patients with new onset SCH during pregnancy between 2010 and 2013 (n = 718). Patients who stopped their levothyroxine after delivery with a 2-year follow-up record were included...
September 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28989211/high-resolution-free-triiodothyronine-thyrotropin-ft3-tsh-responses-to-a-single-oral-dose-of-liothyronine-in-humans-evidence-of-distinct-inter-individual-differences-unraveled-using-an-electrical-network-model
#14
Simon L Goede, Keith R Latham, Melvin Khee-Shing Leow, Jacqueline Jonklaas
The effects of a single oral dose of liothyronine (L-T3) on thyroid stimulating hormone (TSH) and other related thyroid system parameters are partly understood despite therapeutic use of this hormone over many decades. We characterize individualized responses of the hypothalamus-pituitary-thyroid (HPT) axis and its related temporal hormonal profile using an electrical network model. Based on thyroid hormone responses from blood samples using a single 50 μg oral dose of liothyronine in healthy persons with a normal operating euthyroid feedback HPT system, we derived an equivalent electrical circuit model for the system's responses...
March 2017: Journal of Biological Systems
https://www.readbyqxmd.com/read/28987238/thyroid-stimulating-hormone-exhibits-the-impact-on-ldlr-ldl-c-via-up-regulating-hepatic-pcsk9-expression
#15
Yingyun Gong, Yizhe Ma, Zhengqin Ye, Zhenzhen Fu, Panpan Yang, Beibei Gao, Wen Guo, Dandan Hu, Jingya Ye, Shuai Ma, Fan Zhang, Li Zhou, Xinyu Xu, Zhong Li, Tao Yang, Hongwen Zhou
CONTEXT: Thyroid stimulating hormone (TSH) has received increasing attention as being closely associated with increased low-density lipoprotein cholesterol (LDL-c) level and higher atherosclerotic risks. Proprotein convertase subtilisin/kexin type 9 (PCSK9) is known for increasing circulating LDL-c level by inducing LDL receptor degradation. However, whether TSH influences hepatic PCSK9 expression and LDL-c metabolism remains unclear. METHODS: First, the correlation between TSH and lipid profiles were investigated in euthyroid population and in subclinical hypothyroidism patients...
November 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28984032/effects-of-dietary-selenium-and-moisture-on-the-physical-activity-and-thyroid-axis-of-cats
#16
S E Hooper, R Backus, S Amelon
Consumption of canned cat food is considered a risk factor for the development of feline hyperthyroidism. Because selenium and water are substantially higher in canned diets compared to dry diets, objectives of this study were to determine whether increased dietary selenium or water alters the function of the hypothalamic-pituitary-thyroid axis and leads to an increase in activity level. Employing a 28-day latin square design with a 14-day washout, six lean, neutered male domestic shorthair cats were fed (i) commercially available adult dry feline diet containing 0...
October 6, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28980233/molecular-and-neuroendocrine-mechanisms-of-avian-seasonal-reproduction
#17
T Katherine Tamai, Takashi Yoshimura
Animals living outside tropical zones experience seasonal changes in the environment and accordingly, adapt their physiology and behavior in reproduction, molting, and migration. Subtropical birds are excellent models for the study of seasonal reproduction because of their rapid and dramatic response to changes in photoperiod. For example, testicular weight typically changes by more than a 100-fold. In birds, the eyes are not necessary for seasonal reproduction, and light is instead perceived by deep brain photoreceptors...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28979761/visfatin-level-in-children-and-adolescents-with-autoimmune-thyroiditis
#18
Hekma Saad Farghaly, Kotb Abbass Metwalley, Faisal-Alkhateeb Ahmed, Duaa Mohamed Raafat, Osama El-Asheer, Ahmed Mahmood Ali, Ahlam Bahdawy, Asmaa Mohamed Zahran
BACKGROUND: This study aims to assess the levels of visfatin in children and adolescents with autoimmune thyroiditis (AIT) and its relationship with disease-related variables. METHODS: The study included 84 children and adolescents with AIT and 84 healthy subjects. Measurements of fasting glucose, insulin, thyroid-stimulating hormone (TSH), free thyroxin (FT4), antithyroid peroxidase antibodies (TPOAb) and antithyroglobulin antibody (TgAb) were completed, with assessment of visfatin levels...
August 2017: Therapeutic Advances in Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28979135/intraoperative-measurement-of-thyroglobulin-in-lymph-node-aspirates-for-the-detection-of-metastatic-papillary-thyroid-carcinoma
#19
Yizeng Wang, Yuanchao Liu, Xiaoning Wang, Xin Li, Ruoyu Jiang, Xianghui He
BACKGROUND: Among patients with papillary thyroid carcinoma (PTC), 30%-80% have cervical lymph node (LN) metastases, which are most commonly located in the central compartment. However, preoperative ultrasonography identifies malignant central compartment LNs in only 20%-30% of cases. We aimed to evaluate the diagnostic value of intraoperative thyroglobulin (Tg) measurement in fine-needle aspirates (FNA-Tg) of suspicious metastatic LNs. METHODS: In total, 75 patients (75 LNs) with PTC or suspected PTC were enrolled in this study...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28979127/biochemical-assessments-of-thyroid-profile-serum-25-hydroxycholecalciferol-and-cluster-of-differentiation-5-expression-levels-among-children-with-autism
#20
Tarek Desoky, Mohammed H Hassan, Hanan M Fayed, Hala M Sakhr
BACKGROUND: The exact pathogenesis of autism is still unknown. Both thyroid hormones and 25(OH)D are important for brain development, in addition to CD5; all have immunomodulatory actions by which their dysregulation may have a potential role in autism pathogenesis. OBJECTIVES: The objectives of this study were to assess the thyroid profile, serum 25(OH)D levels and CD5 expression levels among autistic patients and to find out the correlations between the measured biomarkers with each other on one side and with the disease severity on the other side...
2017: Neuropsychiatric Disease and Treatment
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