keyword
MENU ▼
Read by QxMD icon Read
search

Thyrotropin

keyword
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/29155897/advances-in-applied-homeostatic-modelling-of-the-relationship-between-thyrotropin-and-free-thyroxine
#2
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/29145557/comparative-analysis-of-the-growth-pattern-of-thyroid-cancer-in-young-patients-screened-by-ultrasonography-in-japan-after-a-nuclear-accident-the-fukushima-health-management-survey
#3
Sanae Midorikawa, Akira Ohtsuru, Michio Murakami, Hideto Takahashi, Satoru Suzuki, Takashi Matsuzuka, Hiroki Shimura, Tetsuya Ohira, Shin-Ichi Suzuki, Seiji Yasumura, Shunichi Yamashita, Hitoshi Ohto, Koichi Tanigawa, Kenji Kamiya
Importance: Thyroid cancer generally grows at a very slow rate in adults, and overdiagnosis is a global issue. However, the detection of early-stage thyroid cancer by screening is not well described in young patients. To prevent overdiagnosis, it is essential to understand the natural course of thyroid cancer growth detection by ultrasonography screening in young patients. Objective: To evaluate the natural progression of thyroid cancer in young patients. Design, Setting, and Participants: An observational study evaluated changes in the diameter of malignant or suspected malignant thyroid tumors on 2 occasions...
November 16, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29144817/seasonal-variation-of-vitamin-d-and-serum-thyrotropin-levels-and-its-relationship-in-a-euthyroid-caucasian-population
#4
Gautam Das, Peter N Taylor, Heather Javaid, Brian P Tennant, John Geen, Andrew Aldridge, Onyebuchi Okosieme
OBJECTIVES: It is unclear whether seasonal variations in vitamin D concentrations affect the hypothalamo-pituitary-thyroid (HPT) axis. We investigated the seasonal variability of vitamin D and serum thyrotropin (TSH) levels and their inter-relationship. METHODS: Analysis of 401 patients referred with non-specific symptoms of tiredness who had simultaneous measurements of 25(OH)D3 and thyroid function. Patients were categorised according to the season of blood sampling and their vitamin D status...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29144795/relationship-between-the-effectiveness-of-inorganic-iodine-and-the-severity-of-graves-thyrotoxicosis-a-retrospective-study
#5
Akira Honda, Toyoyoshi Uchida, Koji Komiya, Hiromasa Goto, Kageumi Takeno, Junko Sato, Ruriko Suzuki, Miwa Himuro, Hirotaka Watada
OBJECTIVE: Inorganic iodine is often used to treat patients with Graves' thyrotoxicosis who do not tolerate thionamides due to adverse effects. However, predictors of continued inorganic iodine efficacy have not been fully elucidated yet. This study aimed to investigate the factors affecting the continued efficacy of potassium iodide (KI) in patients with Graves' thyrotoxicosis. METHODS: In this study, among 1197 patients with Graves' disease who were initially treated with thionamides, we retrospectively studied 24 consecutive Japanese patients whose treatment were changed to KI alone due to the adverse effects of thionamides...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29142837/preoperative-management-in-patients-with-graves-disease
#6
REVIEW
Eliana Piantanida
Graves' disease is the most frequent cause of hyperthyroidism in iodine-sufficient geographical areas and is characterized by the presence in patients' serum of autoantibodies directed against the thyrotropin receptor (TRAb) that cause overproduction and release of thyroid hormones. Clinical presentation results from both hyperthyroidism and underlying autoimmunity. The diagnosis is based on characteristic clinical features and biochemical abnormalities. If serum thyrotropin (TSH) is low, serum free thyroxine (FT4) and free triiodothyronine (FT3) concentrations should be measured to distinguish between subclinical (with normal circulating thyroid hormones) and overt hyperthyroidism (with increased circulating thyroid hormones)...
October 2017: Gland Surgery
https://www.readbyqxmd.com/read/29139221/evaluation-of-hypothalamus-pituitary-thyroid-axis-function-by-chronic-perchlorate-exposure-in-male-rats
#7
Caroline Serrano-Nascimento, Jamile Calil-Silveira, Rafael Dalbosco, Telma Tenorio Zorn, Maria Tereza Nunes
Perchlorate is a widespread endocrine disruptor that was previously correlated with increased serum TSH levels and decreased thyroid hormones production both in animals and humans. Even so, the regulation of gene/protein expression in the hypothalamus, pituitary and thyroid by chronic perchlorate exposure was not completely elucidated. Therefore, this study aimed to investigate the underlying mechanisms involved in the disruption of hypothalamus-pituitary-thyroid axis by chronic perchlorate exposure. Male Wistar rats were treated or not with NaClO4 in the drinking water (35 mg/Kg/day) for 60 days...
November 15, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29137494/trh-receptor-mobility-in-the-plasma-membrane-is-strongly-affected-by-agonist-binding-and-by-interaction-with-some-cognate-signaling-proteins
#8
Radka Moravcova, Barbora Melkes, Jiri Novotny
OBJECTIVES: Extensive research has been dedicated to elucidating the mechanisms of signal transduction through different G protein-coupled receptors (GPCRs). However, relatively little is known about the regulation of receptor movement within the cell membrane upon ligand binding. In this study we focused our attention on the thyrotropin-releasing hormone (TRH) receptor that typically couples to Gq/11 proteins. METHODS: We monitored receptor diffusion in the plasma membrane of HEK293 cells stably expressing yellow fluorescent protein (YFP)-tagged TRH receptor (TRHR-YFP) by fluorescence recovery after photobleaching (FRAP)...
November 14, 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/29137069/graves-disease-following-radioiodine-therapy-for-toxic-adenoma-clinical-case-report
#9
Guohua Shen, Futao Cui, Rui Huang, Anren Kuang
RATIONALE: There is a low risk of developing Graves disease (GD) with elevated thyrotropin receptor antibodies (TRAbs) in patients undergoing radioiodine therapy for toxic adenoma. PATIENT CONCERNS: An old female patient with a history of Hashimoto thyroiditis was referred to our department due to thyrotoxic symptoms. After the administration of radioiodine, a significant remission was achieved. However, after 4 months, she was referred to our department again due to recurrence of hyperthyroid symptoms...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29130077/study-of-the-factors-leading-to-fetal-and-neonatal-dysthyroidism-in-children-of-patients-with-graves-disease
#10
Maïa Banigé, Candice Estellat, Valerie Biran, Luc Desfrere, Valerie Champion, Alexandra Benachi, Yves Ville, Marc Dommergues, Pierre-Henri Jarreau, Mostafa Mokhtari, Claire Boithias, Frederic Brioude, Laurent Mandelbrot, Pierre-François Ceccaldi, Delphine Mitanchez, Michel Polak, Dominique Luton
Context: Neonatal hyperthyroidism was first described in 1912 and in 1964 was shown to be linked to transplacental passage of maternal antibodies. Few multicenter studies have described the perinatal factors leading to fetal and neonatal dysthyroidism. Objective: To show how fetal dysthyroidism (FD) and neonatal dysthyroidism (ND) can be predicted from perinatal variables, in particular, the levels of anti-thyrotropin receptor antibodies (TRAbs) circulating in the mother and child...
June 2017: J Endocr Soc
https://www.readbyqxmd.com/read/29126290/effects-of-levothyroxine-on-pregnant-women-with-subclinical-hypothyroidism-negative-for-thyroid-peroxidase-antibodies
#11
Sima Nazarpour, Fahimeh Ramezani Tehrani, Masoumeh Simbar, Maryam Tohidi, Sonia Minooee, Maryam Rahmati, Fereidoun Azizi
Context: Currently, there is no consensus on universal thyroid screening and Levothyroxine (LT4) treatment of subclinical hypothyroid pregnant women who are negative for thyroid peroxidase antibody (SCH-TPOAb-). Objective: We aimed to evaluate the benefits of LT4 treatment on pregnancy outcomes in SCH-TPOAb- women. Design: This study was conducted within the framework of the Tehran Thyroid and pregnancy study. A single-blind randomized clinical trial was undertaken on SCH-TPOAb- pregnant women...
November 6, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29124350/role-of-trh-ucn3-neurons-of-the-perifornical-area-bed-nucleus-of-stria-terminalis-region-in-the-regulation-of-the-anorexigenic-pomc-neurons-of-the-arcuate-nucleus-in-male-mice-and-rats
#12
Zoltán Péterfi, Erzsébet Farkas, Kata Nagyunyomi-Sényi, Andrea Kádár, Szenci Ottó, András Horváth, Tamás Füzesi, Ronald M Lechan, Csaba Fekete
Two anorexigenic peptides, thyrotropin-releasing hormone (TRH) and urocortin 3 (UCN3), are co-expressed in a continuous neuronal group that extends from the perifornical area to the bed nucleus of stria terminalis, raising the possibility that this cell group may be involved in the regulation of energy homeostasis. In this study, therefore, we tested the hypothesis that the TRH/UCN3 neurons regulate food intake by influencing feeding-related neuropeptide Y (NPY) and/or proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC)...
November 9, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/29117614/the-effect-of-hypolipidemic-agents-on-thyroid-autoimmunity-in-women-with-hashimoto-s-thyroiditis-treated-with-levothyroxine-and-selenomethionine
#13
Robert Krysiak, Witold Szkróbka, Bogusław Okopień
Background Levothyroxine and selenomethionine were found to reduce thyroid antibody titers in patients with Hashimoto's thyroiditis. The same effect was produced by intensive statin therapy. The aim of the present study was to assess whether hypolipidemic agents modulate the impact of thyroid hormone supplementation and selenomethionine on thyroid autoimmunity. Methods The study included 62 women with Hashimoto's thyroiditis treated for at least 6 months with levothyroxine and selenomethionine. On the basis of plasma lipids, women were divided into three groups: women with isolated hypercholesterolemia (group A; n=20), women with isolated hypertriglyceridemia (group B; n=17), and women with normal plasma lipids (group C; n=25)...
November 8, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29111305/landmark-discoveries-in-elucidating-the-origins-of-the-hypothalamic-pituitary-system-from-the-perspective-of-a-basal-vertebrate-sea-lamprey
#14
REVIEW
Stacia A Sower
The hypothalamic-pituitary (HP) system, which is specific to vertebrates, is considered to be an evolutionary innovation that emerged prior to or during the differentiation of the ancestral jawless vertebrates (agnathans) leading to the neuroendocrine control of many complex functions. Along with hagfish, lampreys represent the oldest lineage of vertebrates, agnathans (jawless fish). This review will highlight our discoveries of the major components of the lamprey HP axis. Generally, gnathostomes (jawed vertebrates) have one or two hypothalamic gonadotropin-releasing hormones (GnRH) while lampreys have three hypothalamic GnRHs...
October 27, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29103088/left-ventricular-functions-in-children-with-newly-diagnosed-graves-disease-a-single-center-study-from-upper-egypt
#15
Kotb Abbass Metwalley, Hekma Saad Farghaly, Abdelrahman Abdelhamid
This study aimed to evaluate the left ventricular (LV) functions in a cohort of children with Graves' disease (GD). This is a cross-sectional case-control study. It included 36 children with GD and 36 healthy children matched for age and gender. Thyroid hormones (TSH, FT4, and FT3) and anti-thyroid autoantibodies [anti-thyroid peroxidase (anti-TPO), thyrotropin receptor (TRAbs), and thyroglobulin antibodies] were measured. Conventional and tissue Doppler imaging (TDI) echocardiographies were used to assess left ventricular systolic and diastolic functions...
November 4, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29102897/the-hypothalamic-pituitary-thyroid-axis-and-personality-in-a-sample-of-healthy-subjects
#16
Aleksei Piskunov, Adela Fusté, Nadezhda Teryaeva, Aleksei Moshkin, José Ruiz
Thyroid hormones influence various brain pathologies, including psychiatric disorders. However, the relationship between these hormones and the psychological state in the normal, non-clinical population is poorly understood. We aimed to test whether serum levels of thyroid hormones are associated with personality in the healthy population. Thyrotropin (TSH), free T3 (FT4), total and free T4 (TT4 and FT4) concentrations were measured in the blood of 104 healthy participants (44% men) aged 18-59 (M=35±9). Personality traits were assessed using the revised short versions of the Temperament and Character Inventory (TCI-140) and the NEO Five-Factor Inventory (NEO-FFI)...
October 31, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29102876/maternal-high-fat-diet-induces-sex-specific-endocannabinoid-system-changes-in-newborn-rats-and-programs-adiposity-energy-expenditure-and-food-preference-in-adulthood
#17
Camilla P Dias-Rocha, Mariana M Almeida, Erika M Santana, Julia C B Costa, Juliana G Franco, Carmen C Pazos-Moura, Isis H Trevenzoli
Early life inadequate nutrition triggers developmental adaptations and adult chronic disease. Maternal high-fat (HF) diet promotes visceral obesity and hypothalamic leptin resistance in male rat offspring at weaning and adulthood. Obesity is related to over active endocannabinoid system (ECS). The ECS consists mainly of endogenous ligands, cannabinoid receptors (CB1 and CB2), and the enzymes fatty acid anandamide hydrolase (FAAH) and monoacylglycerol lipase (MAGL). We hypothesized that perinatal maternal HF diet would regulate offspring ECS in hypothalamus and brown adipose tissue (BAT) at birth, prior to visceral obesity development, and program food preference and energy expenditure of adult offspring...
October 5, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29102271/prevalence-of-malnutrition-inflammation-complex-syndrome-and-its-correlation-with-thyroid-hormones-in-chronic-haemodialysis-patients
#18
Venice Chávez Valencia, Oliva Mejía Rodríguez, Martha Eva Viveros Sandoval, Juan Abraham Bermúdez, Sergio Gutiérrez Castellanos, Citlalli Orizaga de la Cruz, Martha Alicia Roa Córdova
INTRODUCTION: Low levels of thyroid hormones, total triiodothyronine (T3) and free triiodothyronine (FT3) in haemodialysis patients is a marker of malnutrition and inflammation and are predictors of mortality. The aim of this study was to determine the prevalence of malnutrition-inflammation complex syndrome in haemodialysis and its relationship with the thyroid hormones thyrotropin, T3, FT3 and free thyroxine (FT4), as well as to evaluate the prevalence of low FT3 syndrome and its correlation with nutritional and inflammatory markers...
October 25, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29096222/thyrotropin-level-and-cognitive-performance-baseline-results-from-the-elsa-brasil-study
#19
Claudia Szlejf, Claudia K Suemoto, Itamar S Santos, Paulo A Lotufo, Maria de Fátima Haueisen Sander Diniz, Sandhi Maria Barreto, Isabela M Benseñor
BACKGROUND AND AIMS: The role of subtle thyroid alterations, such as subclinical thyroid disease and low/high serum thyrotropin (TSH) within the normal range, on cognitive decline is controversial. The aim of this study was to evaluate the association of serum TSH and subclinical thyroid dysfunction with performance on cognitive tests in a large sample of Brazilian middle-aged adults without overt thyroid disease. METHODS: In this cross-sectional analysis of the Brazilian Longitudinal Study of Adult Health, we excluded individuals aged 65 years and older, with overt thyroid dysfunction, prevalent stroke, in use of medications that affect thyroid function or that indicate neurologic diseases, and from Asian or indigenous ethnicity...
October 20, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29095946/endoplasmic-reticulum-stress-inhibits-expression-of-genes-involved-in-thyroid-hormone-synthesis-and-their-key-transcriptional-regulators-in-frtl-5-thyrocytes
#20
Gaiping Wen, Robert Ringseis, Klaus Eder
Endoplasmic reticulum (ER) stress is characterized by the accumulation of misfolded proteins due to an impairment of ER quality control pathways leading to the activation of a defense system, called unfolded protein response (UPR). While thyrocytes are supposed to be highly susceptible to environmental conditions that cause ER stress due to the synthesis of large amounts of secretory proteins required for thyroid hormone synthesis, systematic investigations on the effect of ER stress on expression of key genes of thyroid hormone synthesis and their transcriptional regulators are lacking...
2017: PloS One
keyword
keyword
41400
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"