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TSH AND Iodine

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https://www.readbyqxmd.com/read/28226001/recombinant-human-tsh-versus-thyroid-hormone-withdrawal-in-adjuvant-therapy-with-radioactive-iodine-of-patients-with-papillary-thyroid-carcinoma-and-clinically-apparent-lymph-node-metastases-not-limited-to-the-central-compartment-cn1b
#1
Pedro Weslley Rosario, Gabriela Franco Mourão, Maria Regina Calsolari
Objective: To compare the short- and long-term outcomes of adjuvant therapy with radioactive iodine (RAI) preceded by the administration of recombinant human TSH (rhTSH) versus thyroid hormone withdrawal (THW) in patients with papillary thyroid carcinoma and clinically apparent lymph node metastases not limited to the central neck compartment (cN1b). Subjects and methods: The sample consisted of 178 cN1b patients at intermediate risk who underwent total thyroidectomy with apparently complete tumor resection [including postoperative ultrasonography (US) without anomalies] and who received adjuvant therapy with RAI (30-100 mCi) preceded by the administration of rhTSH (n = 91) or THW (n = 87)...
February 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28222107/transcriptional-response-to-131i-exposure-of-rat-thyroid-gland
#2
Nils Rudqvist, Johan Spetz, Emil Schüler, Toshima Z Parris, Britta Langen, Khalil Helou, Eva Forssell-Aronsson
Humans are exposed to 131I in medical diagnostics and treatment but also from nuclear accidents, and better knowledge of the molecular response in thyroid is needed. The aim of the study was to examine the transcriptional response in thyroid tissue 24 h after 131I administration in rats. The exposure levels were chosen to simulate both the clinical situation and the case of nuclear fallout. Thirty-six male rats were i.v. injected with 0-4700 kBq 131I, and killed at 24 h after injection (Dthyroid = 0.0058-3...
2017: PloS One
https://www.readbyqxmd.com/read/28202636/moderate-to-severe-iodine-deficiency-in-the-first-1000-days-causes-more-thyroid-hypofunction-in-infants-than-in-pregnant-or-lactating-women
#3
Sara Stinca, Maria Andersson, Isabelle Herter-Aeberli, Laila Chabaa, Mohamed Cherkaoui, Nawal El Ansari, Abdelmounaim Aboussad, Sandra Weibel, Michael B Zimmermann
Background: Iodine deficiency early in the life cycle-the "first 1000 days"-can cause hypothyroidism and irreversibly impair neuromotor development. However, the relative vulnerability among women and infants during this critical period is unclear, making it difficult for country-based programs with limited resources to prioritize their iodine interventions.Objective: Our aim was to determine the prevalence of thyroid hypofunction in women and infants living in an area of moderate-to-severe iodine deficiency...
February 15, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28194694/thyroid-status-of-iodine-deficient-newborn-infants-living-in-central-region-of-turkey-a-pilot-study
#4
Osman Bastug, Levent Korkmaz, Hulya Halis, Seyma Memur, Sabriye Korkut, Ahmet Ozdemir, Tamer Gunes, Mehmet Adnan Ozturk, Selim Kurtoglu
BACKGROUND: Iodine deficiency (ID) during the fetal and neonatal periods can lead to neonatal hypothyroidism. This study was conducted to evaluate the effect of ID on the thyroid hormone level of newborns living in Turkey. METHODS: Between 1998 and 2013, 71 newborns with a urinary iodine concentration <100 μg/L were recruited into the study. Data on thyroid volume, free triiodothyronine (fT3), free thyroxine (fT4), thyroid stimulating hormone (TSH), and thyroglobulin (Tg) were collected from all newborns, and on breast milk iodine from their mothers...
February 14, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28171716/reference-intervals-of-thyroid-hormones-during-pregnancy-in-korea-an-iodine-replete-area
#5
Hye Jeong Kim, Yoon Young Cho, Sun Wook Kim, Tae Hyuk Kim, Hye Won Jang, Soo-Youn Lee, Suk-Joo Choi, Cheong-Rae Roh, Jong-Hwa Kim, Jae Hoon Chung, Soo-Young Oh
Background/Aims: Maternal thyroid dysfunction has been associated with adverse pregnancy outcomes. The purpose of our study was to establish trimester-specific reference intervals for thyroid hormones in pregnant women in Korea, where iodine intake is more than adequate and to examine pregnancy and perinatal outcomes in their offspring. Methods: Among 459 healthy pregnant women who were screened, we enrolled 417 subjects who had negative results for thyroid autoantibodies...
February 8, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28160243/association-of-iodine-and-iron-with-thyroid-function
#6
Juhua Luo, Michael Hendryx, Paul Dinh, Ka He
Iodine and iron are essential elements for healthy thyroid function. However, little is known about the association of iron and iodine with thyroid function in the general US population. We investigated iron and iodine status in relation to concentrations of thyroid hormones. We included 7672 participants aged 20 and older from three surveys (2007-2008, 2009-2010, and 2011-2012) of the National Health and Nutrition Examination Survey. Serum thyroid measures (including free and total T3 and T4, and TSH), serum iron concentration, and urinary iodine concentrations were measured...
February 3, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28159025/iodine-status-and-thyroid-nodules-in-females-a-comparison-of-cyprus-and-romania
#7
S Gaengler, X D Andrianou, A Piciu, P Charisiadis, C Zira, K Aristidou, D Piciu, K C Makris
OBJECTIVES: The increased comparative prevalence rates of thyroid cancer in Cyprus (>EU average) led us to conduct this study on possible risk factors of thyroid nodules. Romania served as a reference with a comparative thyroid cancer prevalence < EU average. This study aimed to assess the association between urinary iodine (UI) and thyroid nodules in adult females (n = 208) from Cyprus and Romania. STUDY DESIGN: A case-control study (n = 208). METHODS: Cases were females with ultrasound-confirmed thyroid nodules and controls with confirmed absence of nodules...
February 2017: Public Health
https://www.readbyqxmd.com/read/28153798/thyroid-hormone-biosynthesis-and-release
#8
Denise P Carvalho, Corinne Dupuy
Thyroid hormones (TH) 3,5,3',5'- tetraiodothyronine or thyroxine (T4) and 3,5,3'- triiodothyronine (T3) contain iodine atoms as part of their structure, and their synthesis occur in the unique structures called thyroid follicles. Iodide reaches thyroid cells through the bloodstream that supplies the basolateral plasma membrane of thyrocytes, where it is avidly taken up through the sodium/iodide symporter (NIS). Thyrocytes are also specialized in the secretion of the high molecular weight protein thyroglobulin (TG) in the follicular lumen...
January 31, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28126204/the-relationship-between-iron-level-and-thyroid-function-during-the-first-trimester-of-pregnancy-a-cross-sectional-study-in-wuxi-china
#9
Jinyan Fu, Anqiang Yang, Jun Zhao, Yunlong Zhu, Ying Gu, Yaohui Xu, Daozhen Chen
Our objective was to evaluate the relationship between iron level and thyroid function during the first trimester of pregnancy in Eastern China. This was a hospital-based, cross-sectional observational study. A total of 1764 pregnant women were enrolled during their first trimester of gestation in Wuxi city. Serum ferritin (SF), hemoglobin (Hb), urinary iodine concentrations (UIC), thyroid-stimulating hormone (TSH), free thyroxine (FT4) and free triiodothyronine (FT3) were measured and evaluated in pregnant women...
January 22, 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28108058/serum-trace-elements-are-interrelated-with-hormonal-imbalance-in-men-with-acute-ischemic-stroke
#10
Anatoly V Skalny, Lydmila L Klimenko, Aliya A Turna, Maria N Budanova, Ivan S Baskakov, Marina S Savostina, Aksana N Mazilina, Anatoly I Deyev, Margarita G Skalnaya, Alexey A Tinkov
: The objective of the present study was to assess hormonal and trace element status in men suffering from acute ischemic stroke. METHODS: 21 acute ischemic stroke patients and 21 age- and body mass index-matched healthy volunteers were enrolled in the study. Serum trace elements were assessed using inductively coupled plasma mass spectrometry. Serum hormones and brain damage markers were estimated using enzyme-linked immunosorbent assay. RESULTS: Ischemic stroke patients are characterized by significantly higher levels of total and free triiodothyronine (T3), anti-thyroid peroxidase antibodies (Anti-TPO-Ab), prolactin, and cortisol, whereas the level of thyroid stimulating hormone (TSH) was decreased...
January 6, 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28103777/role-of-iodine-in-metabolism
#11
Szybiński Zbigniew
The natural resources of iodine are seawater, seaweeds and saltpeter-nitrate deposits in Chile. Over 1/3 of the global population is exposed to iodine deficiency, especially in the mountains. Iodine is a component of the thyroid hormones and a strong antioxidant with electric potential of -0.54 V. Iodine as iodide is taken up by the thyroid gland, gastric mucosa, salivary glands and mammary glands in pregnant and breast-feeding women. The transport of iodine to the thyroid gland is regulated by specific enzymes: Natrium-Iodine Symporter, Na+/K+ATP-ase, Pendrin and Apical Iodine Transporter...
January 19, 2017: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/28101810/increased-incidence-of-autoimmune-thyroid-disorders-in-patients-with-psoriatic-arthritis-a-longitudinal-follow-up-study
#12
Poupak Fallahi, Silvia Martina Ferrari, Ilaria Ruffilli, Giusy Elia, Mario Miccoli, Andrea Delle Sedie, Lucrezia Riente, Alessandro Antonelli
Contrasting results have been reported about the prevalence of thyroid autoimmunity (AT) and dysfunction (TD) in patients with psoriatic arthritis (PsA). In this study, we pointed to evaluate the incidence of new cases of clinical and subclinical TD in a broad group of patients with PsA versus a control group, matched by age and gender belonging to the same geographic area. PsA patients with TD were excluded firstly, and new cases of thyroid disorders were evaluated in 97 PsA patients and 97 matched controls, who had comparable iodine intake (median follow-up of 74 months in PsA versus 92 in controls)...
January 18, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28098046/monitoring-the-effects-of-iodine-prophylaxis-in-the-adult-population-of-southern-italy-with-deficient-and-sufficient-iodine-intake-levels-a-cross-sectional-epidemiological-study
#13
Daniela Bonofiglio, Stefania Catalano, Anna Perri, Marta Santoro, Lorenza Siciliano, Danilo Lofaro, Massimiliano Gallo, Stefania Marsico, Rosalinda Bruno, Cinzia Giordano, Ines Barone, Sebastiano Andò
I prophylaxis is the most effective strategy to eradicate I deficiency disorders, but it has been shown to affect the thyroid disease pattern. In this study, we assessed the frequency of thyroid disorders in an adult population living in two areas of southern Italy after implementing I prophylaxis. To this aim, a cross-sectional, population-based study including 489 subjects from an I-deficient rural and an I-sufficient urban area of southern Italy was conducted. Thyroid ultrasound was performed on all participants, and urine and blood samples were collected from each subject...
January 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28079354/effect-of-excess-iodine-intake-on-thyroid-on-human-health
#14
Eftychia G Koukkou, Nikolaos D Roupas, Kostas B Markou
The recommended daily intake of iodide, is 150 μg for adolescents and adults, 250 μg for pregnancy and lactation. Thyroid gland is an effective collector of iodine. The active iodine uptake along the basolateral membrane of thyroid cell is followed by its transport to the apical edge of the cell and then to the follicle lumen. TSH acts through cAMP and stimulates NIS gene expression and protein synthesis. The major proportion of iodine in the thyroid gland is bound to Thyroglobulin. The non-organic intrathyroidal iodine is usually low, but significantly greater compared to plasma...
April 2017: Minerva Medica
https://www.readbyqxmd.com/read/28071990/natural-course-of-euthyroidism-and-clues-for-early-diagnosis-of-thyroid-dysfunctions-tehran-thyroid-study-tts
#15
Atieh Amouzegar, Zahra Ghaemmaghami, Maani Beygi, Safoora Gharibzadeh, Ladan Mehran, Maryam Tohidi, Fereidoun Azizi
OBJECTIVE: Considering the limited data available on the natural course of euthyroidism, this study was designed to evaluate the progression in time from euthyroidism to subclinical or overt hypo - or hyperthyroidism. METHODS: This study was conducted within the framework of the Tehran Thyroid cohort study (TTS), in which 5783 individuals aged 40.4 ± 0.2 years were followed for 6 years. The overall loss to follow-up rate was 8.3%. After applying exclusion criteria, data of 4204 euthyroid subjects remained for analysis of a six-year natural course analysis...
January 10, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28059636/effects-of-adequate-iodine-supply-on-the-incidence-of-iodine-induced-thyroid-disorders-in-slovenia
#16
Vid Bajuk, Katja Zaletel, Edvard Pirnat, Sergej Hojker, Simona Gaberšček
BACKGROUND: This study aimed to establish the changes in the incidence and characteristics of iodine-induced hyperthyroidism (II-Hyper) and iodine-induced hypothyroidism (II-Hypo) in the two-year period before and the 10-year period after the increase in mandatory salt iodization from the previous 10 mg/kg of potassium iodide to 25 mg/kg in 1999. Furthermore, the aim was to determine the duration of treatment in II-Hyper patients, since no data regarding severity and treatment of II-Hyper with respect to iodine supply are available...
February 1, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28054989/effects-of-long-term-in-vivo-exposure-to-di-2-ethylhexylphthalate-on-thyroid-hormones-and-the-tsh-tshr-signaling-pathways-in-wistar-rats
#17
Xinwen Dong, Jin Dong, Yue Zhao, Jipeng Guo, Zhanju Wang, Mingqi Liu, Yunbo Zhang, Xiaolin Na
Di-(2-ethylhexyl)phthalate (DEHP) was a widely used chemical with human toxicity. Recent in vivo and in vitro studies suggested that DEHP-exposure may be associated with altered serum thyroid hormones (THs) levels, but the underlying molecular mechanisms were largely unknown. To explore the possible molecular mechanisms, 128 Wistar rats were dosed with DEHP by gavage at 0, 150, 300, and 600 mg/kg/day for 3 months (M) and 6 M, respectively. After exposure, expression of genes and proteins in the thyroid, pituitary, and hypothalamus tissues of rats were analyzed by Q-PCR and western blot, while the sera and urine samples were assayed by radioimmunoassay and ELISA...
January 4, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28041586/thyroid-nodules-%C3%AE-guide-to-assessment-treatment-and-follow-up
#18
REVIEW
Stavroula Α Paschou, Andromachi Vryonidou, Dimitrios G Goulis
Thyroid nodules constitute by far the most common disorder of the endocrine system. Epidemiological studies have indicated that approximately 5% of women and 1% of men resident in iodine-sufficient areas have palpable thyroid nodules. However, by the age of 60 years about 50% of the general population is estimated to have at least one thyroid nodule. Indeed, the reported prevalence of a "thyroid incidentaloma" is up to 70% when neck/carotid artery ultrasound, computed tomography (CT) or magnetic resonance imaging (MRI) is performed for other indications...
February 2017: Maturitas
https://www.readbyqxmd.com/read/28002173/higher-preablative-serum-thyroid-stimulating-hormone-level-predicts-radioiodine-ablation-effectiveness-in-patients-with-differentiated-thyroid-carcinoma
#19
Ismaheel O Lawal, Nozipho E Nyakale, Lerwine M Harry, Thabo Lengana, Neo P Mokgoro, Mariza Vorster, Mike M Sathekge
INTRODUCTION: Radioiodine ablation of remnant thyroid tissue is an important adjuvant therapy of differentiated thyroid carcinoma (DTC) after thyroidectomy. Elevated serum thyroid-stimulating hormone (TSH) level is necessary for successful ablation. The optimum level of serum TSH level necessary for successful radioiodine ablation of well-DTC is, however, yet to be defined. We aimed to determine whether higher serum TSH level will result in a better rate of complete ablation of well-DTC using iodine-131 (I) following initial thyroidectomy...
March 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27997357/effect-of-the-micronutrient-iodine-in-thyroid-carcinoma-angiogenesis
#20
Kayla Daniell, Carmelo Nucera
Iodide is a micronutrient essential for thyroid hormone production. The uptake and metabolism of iodide by thyrocytes is crucial to proper thyroid function. Iodide ions are drawn into the thyroid follicular cell via the sodium-iodide symporter (NIS) in the cell membrane and become integrated into tyrosyl residues to ultimately form thyroid hormones. We sought to learn how an abnormal concentration of iodide within thyrocyte can have significant effects on the thyroid, specifically the surrounding vascular network...
December 20, 2016: Aging
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