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Thyroid hormones

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https://www.readbyqxmd.com/read/29161598/roles-and-potential-mechanisms-of-selenium-in-countering-thyrotoxicity-of-dehp
#1
Pei Zhang, Xie Guan, Min Yang, Li Zeng, Changjiang Liu
Di-(2-ethylhexyl) phthalate (DEHP) as a ubiquitous environmental contaminant could disturb thyroid hormone (TH) homeostasis. Selenium as an essential trace element has protective effects on thyroids. To verify roles of selenium in countering thyrotoxicity of DEHP and elucidate potential mechanisms, Sprague-Dawley rats and Nthy-ori 3-1 cells were treated with DEHP or/and selenomethionine (SeMet). Results showed that selenium supplementation elevated plasma free thyroxine (FT4) that was decreased by DEHP, and free triiodothyronine (FT3) and thyroid stimulating hormone (TSH) levels were also partially recovered...
November 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29160591/corrigendum-association-of-thyroid-stimulating-hormone-with-lipid-concentrations-an-11-year-longitudinal-study
#2
Ville L Langén, Teemu J Niiranen, Pauli Puukka, Jouko Sundvall, Antti M Jula
No abstract text is available yet for this article.
December 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29160171/recent-pregnancy-is-not-associated-with-high-risk-pathological-features-of-well-differentiated-thyroid-cancer
#3
Angela J Chen, Masha J Livhits, Lin Du, James X Wu, Eric James Kuo, Michael W Yeh, Angela M Leung
BACKGROUND: Thyroid cancer is commonly diagnosed in the first postpartum year, supporting the theory that high levels of estrogen may stimulate progression of hormone-mediated thyroid cancer. The aim of this study was to assess the effect of recent pregnancy on histopathologic disease characteristics of well-differentiated thyroid cancer (WDTC). METHODS: Cases of WDTC (1999-2012) were identified from the California Cancer Registry and linked to data from the Office of Statewide Health Planning and Development...
November 21, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29160164/rutin-scavenges-reactive-oxygen-species-inactivates-5-adenosine-monophosphate-activated-protein-kinase-ampk-and-increases-nis-expression-in-thyroid-pccl3-cells
#4
Carlos Frederico Lima Gonçalves, Mariana Lopes de Freitas, Rodrigo Soares Fortunato, Leandro Miranda-Alves, Denise Pires de Carvalho, Andrea Claudia Freitas Ferreira
BACKGROUND: Thyroid iodide uptake, mediated by the sodium-iodide symporter (NIS), is essential for thyroid hormone synthesis and also for treatment of thyroid diseases, such as thyroid cancer, through radioiodine therapy. Therefore, compounds able to increase thyroid iodide uptake could be clinically useful, and it is of great importance to unravel the mechanisms underlying such effect. We have previously shown that the flavonoid rutin increases thyroid radioiodide uptake in vivo, in rats...
November 21, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29159833/maternal-hypothyroidism-in-the-perinatal-period-and-childhood-asthma-in-the-offspring
#5
Xiaoqin Liu, Stine Linding Andersen, Jørn Olsen, Esben Agerbo, Vivi Schlünssen, Shyamali Chandrika Dharmage, Trine Munk-Olsen
BACKGROUND: There is increasing interest in the possible link between maternal hypothyroidism in the perinatal period and childhood asthma risk. We explored this in the present study while accounting for the timing of hypothyroidism diagnosis. Further, we evaluated whether the risk was moderated by thyroid hormone treatment during pregnancy. METHODS: We conducted a population-based cohort study using Danish national registers. All liveborn singletons in Denmark from 1998 to 2007 were identified...
November 21, 2017: Allergy
https://www.readbyqxmd.com/read/29159691/potential-treatment-of-atopic-dermatitis-tolerability-and-safety-of-cream-containing-nanoparticles-loaded-with-hydrocortisone-and-hydroxytyrosol-in-human-subjects
#6
Muhammad Irfan Siddique, Haliza Katas, Adawiyah Jamil, Mohd Cairul Iqbal Mohd Amin, Shiow-Fern Ng, Mohd Hanif Zulfakar, Syed Maaz Nadeem
Hydrocortisone (HC), topical glucocorticoid along with hydroxytyrosol (HT), and anti-microbial- and anti-oxidant-loaded chitosan nanoparticles (CSNPs) were prepared in large scale and analyzed for their adverse effects on healthy human skin followed by repeated applications. Ten subjects were randomized to receive test (HC-HT CSNPs) and vehicle samples (aqueous (AQ) cream). They were applied on the arms for 28 days, and transepidermal water loss (TEWL), erythema intensity, and irritation score were measured...
November 20, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29159669/thyroid-hormones-and-commonly-cited-symptoms-of-overtraining-in-collegiate-female-endurance-runners
#7
Justin X Nicoll, Disa L Hatfield, Kathleen J Melanson, Christopher S Nasin
PURPOSE: Overtraining syndrome (OTS) is reported in endurance sports. Thyroid hormones (TH) regulate metabolism, mood, and energy production, and may play a role in OTS of endurance athletes. The purpose of this study was to investigate relationships in TH and symptoms of OTS in track and field endurance runners (ER). METHODS: Sixteen female track and field middle distance (MD; n = 9; age: 20.2 ± 1.5 years; ht: 167.86 ± 5.04 cm; body-mass: 57.97 ± 5...
November 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29158735/correlation-between-insulin-resistance-and-thyroid-nodule-in-type-2-diabetes-mellitus
#8
Yunzhao Tang, Tiantian Yan, Gang Wang, Yijun Chen, Yanjuan Zhu, Zhenhuan Jiang, Min Yang, Chenguang Li, Zhu Li, Ping Yu, Shanshan Wang, Nannan Zhu, Qiuyue Ren, Changlin Ni
Objective: The present study explored the association between insulin resistance (IR) and the clinical characteristics of thyroid nodules in patients with type 2 diabetes mellitus (T2DM). Methods: All the patients were newly diagnosed with T2DM. 201 patients with thyroid nodule disease and 308 patients without the nodular thyroid disease. The participants were evaluated by relevant examination. Correlation analyses and regression analyses were performed to examine the relationships between the two groups...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29157942/expression-of-two-glycoprotein-hormone-receptors-in-larval-parasitic-phase-and-adult-sea-lampreys
#9
Krist N Hausken, Timothy J Marquis, Stacia A Sower
All jawed vertebrates have three canonical glycoprotein hormones (GpHs: luteinizing hormone, LH; follicle stimulating hormone, FSH; and thyroid stimulating hormone, TSH) with three corresponding GpH receptors (GpH-Rs: LH-R, FSH-R and TSH-R). In contrast, we propose that the jawless vertebrate, sea lamprey (Petromyzon marinus), only has two pituitary glycoprotein hormones, lamprey (l)GpH and l-thyrostimulin, and two functional glycoprotein receptors, lGpH-R I and II. It is not known at this time whether there is a specific receptor for lGpH and l-thyrostimulin, or if both GpHs can differentially activate the lGpH-Rs...
November 17, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29157630/the-first-postoperative-stimulated-serum-thyroglobulin-is-a-prognostic-factor-for-thyroid-microcarcinomas
#10
Isabela de Oliveira Amui, José Vicente Tagliarini, Emanuel C Castilho, Mariângela de Alencar Marques, Yoshio Kiy, José Eduardo Corrente, Gláucia M F S Mazeto
INTRODUCTION: Endogenous thyroid-stimulating hormone-stimulated thyroglobulin collected after total thyroidectomy is a useful predictor of better prognosis in patients with differentiated thyroid carcinomas in general, but studies with microcarcinomas are scarce. OBJECTIVE: To assess whether the first postoperative stimulated thyroglobulin measurement is a prognostic factor in patients with microcarcinoma. METHODS: The medical data of 150 differentiated thyroid carcinoma patients were studied retrospectively, and 54 (36%) cases with microcarcinoma were selected...
October 31, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29156872/plasma-human-leukocyte-antigen-g-hla-g-in-patients-with-thyroid-cancer
#11
Murat Akın, Latife Arzu Aral, Aydın Yavuz, Harun Karabacak, Kürşat Dikmen, Hasan Bostancı
Background/aim: A number of tumor markers detected in the serum or pathological specimens using immunohistochemical methods are used for early detection of malignancies and postoperative follow-up. Human leukocyte antigen-G (HLA-G) is a nonclassic HLA class I molecule. Recent studies suggested a relationship between HLA-G positivity and the stage or the phenotype of the malignancy. In this study, the relationship between serum HLA-G positivity and thyroid cancer was investigated. Materials and methods: Fifty patients with thyroid cancer and 45 healthy volunteers were included in this study...
August 23, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29155897/advances-in-applied-homeostatic-modelling-of-the-relationship-between-thyrotropin-and-free-thyroxine
#12
Rudolf Hoermann, John Edward Maurice Midgley, Rolf Larisch, Johannes Wolfgang Christian Dietrich
INTRODUCTION: The relationship between pituitary TSH and thyroid hormones is central to our understanding of thyroid physiology and thyroid function testing. Here, we generated distribution patterns by using validated tools of thyroid modelling. METHODS: We simulated patterns of individual set points under various conditions, based on a homeostatic model of thyroid feedback control. These were compared with observed data points derived from clinical trials. RESULTS: A random mix of individual set points was reconstructed by simulative modelling with defined structural parameters...
2017: PloS One
https://www.readbyqxmd.com/read/29155610/seasonal-and-sexual-variation-in-metabolism-thermoregulation-and-hormones-in-the-big-brown-bat-eptesicus-fuscus
#13
Christopher S Richardson, Tim Heeren, Thomas H Kunz
In response to seasonal variation in energy availability and thermal environment, physiological and endocrine mechanisms have evolved in temperate zone animals. Seasonal changes in hormone activity affect metabolism, body temperature, and reproductive activity. We examined the seasonal regulatory role of hormones on basal metabolic rate (BMR) and regulatory nonshivering thermogenesis (RNST) in 98 female and 17 male adult Eptesicus fuscus (big brown bat). We measured BMR, RNST, and plasma levels of thyroid hormone (T3), leptin, and cortisol in bats captured in maternity colonies in eastern Massachusetts from May to August (from arousal from the hibernation phase to the prehibernation phase)...
January 2018: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/29154791/associations-of-early-life-urinary-triclosan-concentrations-with-maternal-neonatal-and-child-thyroid-hormone-levels
#14
Joseph M Braun, Aimin Chen, Andrew Hoofnagle, George D Papandonatos, Medina Jackson-Browne, Russ Hauser, Megan E Romano, Margaret R Karagas, Kimberly Yolton, R Thomas Zoeller, Bruce P Lanphear
BACKGROUND: Triclosan, an antimicrobial agent used in some consumer products, reduces endogenous thyroid hormone concentrations in rodents. Despite ubiquitous triclosan exposure and the importance of thyroid hormones for normal fetal development, few human studies have examined the impact of triclosan exposure on maternal, neonatal, or child thyroid hormones. METHODS: In the HOME Study, a prospective cohort from Cincinnati, OH, we measured urinary triclosan concentrations up to three times in pregnant women between 16weeks and delivery, and up to three times in children between age 1-3years...
November 14, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/29154445/long-term-cardiovascular-morbidity-and-mortality-in-patients-treated-for-differentiated-thyroid-cancer
#15
Nelli Pajamäki, Saara Metso, Tommi Hakala, Tapani Ebeling, Heini Huhtala, Essi Ryödi, Juhani Sand, Arja Jukkola-Vuorinen, Pirkko-Liisa Kellokumpu-Lehtinen, Pia Jaatinen
OBJECTIVE: Thyroid hormone suppression therapy has been widely used in the treatment of thyroid cancer, but concerns have been raised about the cardiovascular risks of this treatment. The objective of this study was to evaluate long-term cardiovascular morbidity and mortality in patients treated for differentiated thyroid cancer (DTC) and to assess the effect of TSH suppression and radioiodine (RAI) treatment on the cardiovascular outcome. DESIGN: Retrospective cohort study...
November 20, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29154201/neuroendocrine-disorder-in-chronic-fatigue-syndrome
#16
Slavica Tomic, Snezana Brkic, Dajana Lendak, Daniela Maric, Milica Medic Stojanoska, Aleksandra Novakov Mikic
Background/aim: Neuroendocrine disorders are considered a possible pathogenetic mechanism in chronic fatigue syndrome (CFS). The aim of our study was to determine the function of the hypothalamic-pituitary-adrenal axis (HPA) and thyroid function in women of reproductive age suffering from CFS. Materials and methods: The study included 40 women suffering from CFS and 40 healthy women (15-45 years old). Serum levels of cortisol (0800 and 1800 hours), ACTH, total T4, total T3, and TSH were measured in all subjects...
August 23, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29152671/comparative-transcriptome-analysis-provides-insights-into-differentially-expressed-genes-and-long-non-coding-rnas-between-ovary-and-testis-of-the-mud-crab-scylla-paramamosain
#17
Xiaolong Yang, Mhd Ikhwanuddin, Xincang Li, Fan Lin, Qingyang Wu, Yueling Zhang, Cuihong You, Wenhua Liu, Yinwei Cheng, Xi Shi, Shuqi Wang, Hongyu Ma
The molecular mechanism underlying sex determination and gonadal differentiation of the mud crab (Scylla paramamosain) has received considerable attention, due to the remarkably biological and economic differences between sexes. However, sex-biased genes, especially non-coding genes, which account for these differences, remain elusive in this crustacean species. In this study, the first de novo gonad transcriptome sequencing was performed to identify both differentially expressed genes and long non-coding RNAs (lncRNAs) between male and female S...
November 20, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/29151481/a-low-normal-free-triiodothyronine-level-is-associated-with-adverse-prognosis-in-euthyroid-patients-with-heart-failure-receiving-cardiac-resynchronization-therapy
#18
Yu-Yang Chen, Xiao-Rong Shu, Zi-Zhuo Su, Rong-Jie Lin, Hai-Feng Zhang, Wo-Liang Yuan, Jing-Feng Wang, Shuang-Lun Xie
Thyroid dysfunction is prevalent in patients with heart failure (HF) and hypothyroidism is related to the adverse prognosis of HF subjects receiving cardiac resynchronization therapy (CRT). We aim to investigate whether low-normal free triiodothyronine (fT3) level is related to CRT response and the prognosis of euthyroid patients with HF after CRT implantation.One hundred and thirteen euthyroid patients who received CRT therapy without previous thyroid disease and any treatment affecting thyroid hormones were enrolled...
November 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/29149074/central-cns-and-peripheral-gastric-tissue-selective-monitoring-of-somatostatin-srif-with-micro-sensor-and-voltammetry-in-rats-influence-of-growth-factors-gh-egf
#19
Francesco Crespi
Somatostatin (SRIF) is widely distributed throughout the body, and regulates the endocrine system via interactions with various hormones, including the pituitary growth hormone, the thyroid stimulating hormone and the majority of the hormones of the gastrointestinal tract. SRIF is present in the central nervous system (CNS), where it affects rates of neurotransmission, and is also reported to be active in the intestinal tract, with evidence that stressed rats present a significant decrease in antral somatostatin-like immunoreactivity (SLI)...
November 17, 2017: Biosensors
https://www.readbyqxmd.com/read/29146231/is-hungry-bone-syndrome-a-cause-of-postoperative-hypocalcemia-after-total-thyroidectomy-in-thyrotoxicosis-a-prospective-study-with-bone-mineral-density-correlation
#20
Poongkodi Karunakaran, Chandrasekaran Maharajan, Srinivasan Ramalingam, Suresh Venkatesh Rachmadugu
BACKGROUND: Hungry bone syndrome is a well-established cause of postoperative hypocalcemia in thyrotoxicosis. To date, the incidence of hungry bone syndrome after total thyroidectomy is unclear. This prospective study examined the incidence of postthyroidectomy hungry bone syndrome and its correlation with preoperative bone mineral density. METHODS: Forty thyrotoxic subjects (Group A; age: mean ± SD; 36.5 ± 9.8 years) and 40 euthyroid controls with benign thyroid nodules (Group B) undergoing total thyroidectomy were evaluated for preoperative bone mineral density and serum calcium, magnesium, phosphorus, parathyroid hormone, alkaline phosphatase, and 25-Hydroxy Vitamin D serially...
November 14, 2017: Surgery
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