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https://www.readbyqxmd.com/read/28805160/clinical-implications-of-immunoglobulin-g4-to-graves-ophthalmopathy
#1
Sung Hoon Yu, Jun Goo Kang, Chul Sik Kim, Sung-Hee Ihm, Moon Gi Choi, Hyung Joon Yoo, Seong Jin Lee
BACKGROUND: This study aimed to explore relation of immunoglobulin G4 (IgG4) to clinical and laboratory characteristics of patients newly diagnosed with Graves' disease (GD) without or with Graves' ophthalmopathy (GO), and to analyze association of IgG4 with development and grade of GO in GD patients. METHODS: Sixty-four GD patients and 64 sex- and age-matched euthyroid subjects were enrolled. Serum levels of thyroid hormones, thyroid autoantibodies, immunoglobulin G (IgG) and IgG4 were measured, and ophthalmological and ultrasonographical evaluation was performed...
August 12, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28782242/effects-of-hyper-and-hypothyroidism-on-the-development-and-proliferation-of-testicular-cells-in-prepubertal-rats
#2
Mohamed Babo Fadlalla, Quanwei Wei, Jaafar Sulieman Fedail, Asif Mehfooz, Dagan Mao, Fangxiong Shi
Thyroid hormones are important in the development and regulation of testes. This study was conducted to determine the effects of hyper- and hypothyroidism on testicular development in prepubertal rats aged 20-70 days. Weaning male rats (20 days old) until day 70 age were randomly divided into four groups: control, hyperthyroid (hyper-T), hypothyroid (hypo-T) and hypothyroid treated with thyroxine (T4) (hypo-T+T4). The results indicated that thyroid hormones caused a significant effect in body and testis weights, and food and water consumption...
August 7, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28776278/expression-of-thyroid-stimulating-hormone-receptors-and-thyroglobulin-in-limbic-regions-in-the-adult-human-brain
#3
Meleshni Naicker, Strinivasen Naidoo
Expression of the human thyroid-specific proteins, thyroid-stimulating hormone receptor (TSH-R) and thyroglobulin (TG) in non-thyroid tissue is well-documented. TSH-R has been identified in the heart, kidney, bone, pituitary, adipose tissue, skin and astrocyte cultures. TG has been identified in the skin, thymus and kidney. However, none of those previous studies had identified TSH-R or TG in specific human brain regions. Previously, a pilot study conducted by our group on normal adult human brain demonstrated TSH-R and TG in cortical neurons and cerebral vasculature, respectively, within various brain areas...
August 3, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28771744/loss-of-sorting-nexin-5-stabilizes-internalized-growth-factor-receptors-to-promote-thyroid-cancer-progression
#4
Sumito Jitsukawa, Ryuta Kamekura, Koji Kawata, Fumie Ito, Akinori Sato, Hiroshi Matsumiya, Tomonori Nagaya, Keiji Yamashita, Terufumi Kubo, Tomoki Kikuchi, Noriyuki Sato, Tadashi Hasegawa, Hiroshi Kiyonari, Yoshiko Mukumoto, Ken-Ichi Takano, Tetsuo Himi, Shingo Ichimiya
Thyroid carcinoma is the most common endocrine malignancy and its prevalence has recently been increasing worldwide. We previously reported that the level of sorting nexin 5 (Snx5), an endosomal translocator, is preferentially decreased during the progression of well-differentiated thyroid carcinoma into poorly differentiated carcinoma. To address the functional role of Snx5 in the development and progression of thyroid carcinoma, we established Snx5-deficient (Snx5(-/-) ) mice. In comparison to wild-type (Snx5(+/+) ) mice, Snx5(-/-) mice exhibited enlarged thyroid glands that consisted of thyrocytes with large irregular-shaped vacuoles...
August 3, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28767604/serum-25-hydroxyvitamin-d-might-be-an-independent-prognostic-factor-for-graves-disease-recurrence
#5
Hwa Young Ahn, Yun Jae Chung, Bo Youn Cho
Graves disease is the most common cause of thyrotoxicosis. Although medical intervention with antithyroid drugs (ATDs) is commonly the first choice of treatment in Korea, the remission rate associated with this approach is not satisfactory. During ATD therapy, low or undetectable serum levels of thyroid-stimulating hormone (TSH) receptor antibodies (TRAbs) have been reported to affect the incidence of Graves disease remission. This study evaluated the correlation between serum 25-hydroxyvitamin D levels and TRAb levels, as well as the effect of 25-hydroxyvitamin D on the recurrence of Graves disease...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28750432/hyperthyroidism-in-patients-with-graves-ophthalmopathy-and-thyroidal-skeletal-and-eye-muscle-specific-type-2-deiodinase-enzyme-activities
#6
Ildikó Molnár, József A Szentmiklósi, Éva Somogyiné-Vári
Graves' ophthalmopathy is characterized by hyperthyroidism, which is associated with higher serum T3 levels than T4 due to deiodinase enzymes.The effect of Graves' patient's sera (n=52) with elevated thyroid hormone and TSH receptor or thyroid peroxidase antibody (anti-TPO) levels was investigated on thyroidal, skeletal and eye muscle type 2 deiodinase enzyme (DII) activities. DII activities were measured with (125)I-T4 substrate, while thyroid hormone and antibody levels with immunoassays.In Graves' ophthalmopathy, sera with elevated FT4 or FT3 levels reduced DII activites remarkably in all tissue fractions...
July 27, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28743746/de-novo-triiodothyronine-formation-from-thyrocytes-activated-by-thyroid-stimulating-hormone
#7
Cintia E Citterio, Balaji Veluswamy, Sarah J Morgan, Valerie A Galton, J Paul Banga, Stephen Atkins, Yoshiaki Morishita, Susanne Neumann, Rauf Latif, Marvin C Gershengorn, Terry J Smith, Peter Arvan
The thyroid gland secretes primarily tetraiodothyronine (T4), and some triiodothyronine (T3). Under normal physiological circumstances, only one-fifth of circulating T3 is directly released by the thyroid, but in states of hyperactivation of thyroid-stimulating-hormone receptors (TSHRs), patients develop a syndrome of relative T3-toxicosis. Thyroidal T4 production results from iodination of thyroglobulin (TG) at residues Tyr5 and Tyr130, whereas thyroidal T3 production may originate in several different ways...
July 25, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28741655/treatment-of-a-thyrotropin-secreting-pituitary-adenoma-tsh-oma-with-pasireotide-lar-case-report
#8
Marlise E A van Eersel, Susanne H Meeuwisse-Pasterkamp, Anneke C Muller Kobold, Linda C Meiners, Wilfred F den Dunnen, Leo J Hofland, Gerrit van den Berg
Thyrotropin (TSH)-secreting pituitary adenomas (TSH-oma) are rare and account for about 0.5-3% of all pituitary adenomas. Patients with TSH-oma present themselves mostly with central hyperthyroidism expressing increased circulating levels of TSH, free T4 and T3.(1) TSH-omas are usually benign tumours and express somatostatin receptors subtypes 2 and 5. This article is protected by copyright. All rights reserved.
July 25, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28737965/comparison-of-three-competitive-immunoassays-for-measurement-of-tsh-receptor-antibodies-in-patients-with-graves-disease
#9
Sara Doroudian, Inge Bülow Pedersen, Cindy Soendersoe Knudsen, Aase Handberg, Stine Linding Andersen
Thyrotropin (TSH) receptor antibodies (TRAb) mediate the hyperthyroidism of Graves' disease (GD). The aim of the study was to compare the diagnostic performance and assay agreement between three immunoassays for the measurement of TRAb in patients with newly diagnosed GD. TRAb was measured with three different assays [H-TRAb (BRAHMS Diagnostica), M22-Man (RSR Limited) and M22-Aut (Roche Diagnostics)] in 387 participants who were recruited from two Danish population-based studies and diagnosed with GD (n = 101), multinodular toxic goitre (n = 88), primary autoimmune hypothyroidism (n = 100) or included as controls (n = 98)...
July 24, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28727542/single-session-high-intensity-focused-ultrasound-treatment-for-persistent-or-relapsed-graves-disease-preliminary-experience-in-a-prospective-study
#10
Brian Hung-Hin Lang, Yu-Cho Woo, Ian Yat-Hin Wong, Keith Wan-Hang Chiu
Purpose To evaluate the safety and efficacy of ultrasonography (US)-guided high-intensity focused ultrasound (HIFU) ablation as a treatment for medically refractory Graves disease (GD). Materials and Methods After ethics approval, a prospective trial (NCT02685514) was performed from November 2015 to February 2016. Thirty patients underwent ablation of the entire right and left thyroid lobes, with areas near the tracheal-esophageal groove and common carotid artery left unablated. Serum thyroid-stimulating hormone (TSH), free T4 (FT4), antithyroid autoantibodies, and TSH receptor (TSHR) antibody levels were evaluated afterward, and US color Doppler, US volumetry, and eye assessment were performed...
July 20, 2017: Radiology
https://www.readbyqxmd.com/read/28726182/autoimmune-hypothyroidism-is-three-times-more-frequent-in-female-prolactinoma-patients-compared-to-healthy-women-data-from-a-cross-sectional-case-control-study
#11
Atanaska Elenkova, Iliana Аtanasova, Georgi Кirilov, Еmil Natchev, Ralitza Ivanova, Roussanka Кovatcheva, Silvia Vandeva, Dimitar Tcharaktchiev, Sabina Zacharieva
BACKGROUND: The potent immunomodulatory action of prolactin has been demonstrated in many experimental in vitro studies. In accordance with these data, our retrospective analyses revealed higher prevalence of autoimmune thyroid diseases in prolactinoma patients compared to general population. PURPOSE: A cross-sectional case-control study was carried out in a single tertiary referral centre. The main aim was to assess the frequency of newly diagnosed autoimmune thyroid diseases in female patients with prolactinomas...
July 19, 2017: Endocrine
https://www.readbyqxmd.com/read/28725332/thyrotoxic-valvulopathy-case-report-and-review-of-the-literature
#12
Keniel Pierre, Sushee Gadde, Bassam Omar, G Mustafa Awan, Christopher Malozzi
We report a 42-year-old female who was admitted for abdominal pain, and also endorsed dyspnea, fatigue and chronic palpitations. Past medical history included asthma, patent ductus arteriosus repaired in childhood and ill-defined thyroid disease. Physical examination revealed blood pressure of 136/88 mm Hg and heart rate of 149 beats per minute. Cardiovascular exam revealed an irregularly irregular rhythm, and pulmonary exam revealed mild expiratory wheezing. Abdomen was tender. Electrocardiogram revealed atrial fibrillation with rapid ventricular response which responded to intravenous diltiazem...
June 2017: Cardiology Research
https://www.readbyqxmd.com/read/28718206/delta-like-protein-1-in-the-pituitary-adipose-axis-in-the-adult-male-mouse
#13
Aixa R Bello, Ricardo A Puertas-Avendaño, María J González-Gómez, Miriam González-Gómez, Jorge Laborda, Carmen Damas, María Ruiz-Hidalgo, Carmen Diaz
With the aim of studying delta-like protein 1 (DLK1) implication in the relationship between adipocyte leptin and adenohypophyseal hormones, we carried out an immunohistochemical study to analyse the presence of receptors for these hormones in pituitary and adipose cells of male wildtype mice (Dlk1(+/+) ), compared to knockout mice (Dlk1(-/-) ). The mRNA expression of these molecules was also determined by RT-PCR. Our results showed that in wildtype adipose cells all the adenohypophyseal hormone receptors were present, with a higher mRNA expression for GHR and TSHR...
July 17, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28717364/serum-free-thyroxine-levels-were-associated-with-pulmonary-hypertension-and-pulmonary-artery-systolic-pressure-in-euthyroid-patients-with-coronary-artery-disease
#14
Bingjie Wu, Jingjing Jiang, Minghui Gui, Lin Liu, Qiqige Aleteng, Shanshan Wang, Xiaojing Liu, Yan Ling, Xin Gao
The aim of this study was to evaluate the association between thyroid hormone levels, pulmonary hypertension (PH), and pulmonary artery systolic pressure (PASP) in euthyroid patients with coronary artery disease (CAD). A cross-sectional study was conducted in individuals who underwent coronary angiography and were diagnosed as CAD from March 2013 to November 2013. 811 subjects (185 women and 626 men) were included in this study. PASP was measured by transthoracic Doppler echocardiography. 86 patients were diagnosed as PH and had significantly higher free thyroxine (FT4) levels than those without PH...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28713331/thyroid-stimulating-hormone-receptor-antibodies-in-pregnancy-clinical-relevance
#15
REVIEW
Ines Bucci, Cesidio Giuliani, Giorgio Napolitano
Graves' disease is the most common cause of thyrotoxicosis in women of childbearing age. Approximately 1% of pregnant women been treated before, or are being treated during pregnancy for Graves' hyperthyroidism. In pregnancy, as in not pregnant state, thyroid-stimulating hormone (TSH) receptor (TSHR) antibodies (TRAbs) are the pathogenetic hallmark of Graves' disease. TRAbs are heterogeneous for molecular and functional properties and are subdivided into activating (TSAbs), blocking (TBAbs), or neutral (N-TRAbs) depending on their effect on TSHR...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28699427/treatment-of-swedish-patients-with-graves-hyperthyroidism-is-associated-with-changes-in-acylcarnitine-levels
#16
Mahmoud Al-Majdoub, Mikael Lantz, Peter Spégel
BACKGROUND: Hyperthyroidism is associated with alterations in metabolism that are currently only partially understood. The objective of the study was to investigate changes in metabolism associated with reinstatement of euthyroidism in Swedish patients. METHODS: Eighty metabolites in plasma were profiled from 10 subjects with Graves' disease (GD) at baseline and after 9 and 15 months of treatment to reinstate euthyroidism. Thyroid parameters, thyrotropin (TSH), TSH receptor antibodies, free triiodothyronine, and free thyroxine were followed...
August 18, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28693124/pediatric-toxic-polycystic-thyroid
#17
Janeil M Belle, Nektarios Vasilottos, Todd D Nebesio, Benjamin C James
BACKGROUND: Polycystic thyroid disease (PCTD) is a rare condition and has been described in adults in the setting of subclinical and clinical hypothyroidism. We present the first known case of a pediatric patient with diffuse macrocystic degeneration of the thyroid. CLINICAL PRESENTATION: A 6-year-old previously healthy patient was evaluated after presenting with a 16-month history of an enlarging polycystic thyroid and hyperthyroidism. Markers of autoimmune thyroid disease including thyroid stimulating immunoglobulin (TSI), thyroid stimulating hormone (TSH) receptor antibody, thyroid peroxidase antibody and thyroglobulin antibody were negative...
June 16, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28687780/nuclear-receptors-connect-progenitor-transcription-factors-to-cell-cycle-control
#18
Marta Neto, Marina Naval-Sánchez, Delphine Potier, Paulo S Pereira, Dirk Geerts, Stein Aerts, Fernando Casares
The specification and growth of organs is controlled simultaneously by networks of transcription factors. While the connection between these transcription factors with fate determinants is increasingly clear, how they establish the link with the cell cycle is far less understood. Here we investigate this link in the developing Drosophila eye, where two transcription factors, the MEIS1 homologue hth and the Zn-finger tsh, synergize to stimulate the proliferation of naïve eye progenitors. Experiments combining transcriptomics, open-chromatin profiling, motif analysis and functional assays indicate that these progenitor transcription factors exert a global regulation of the proliferation program...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28686898/prenatal-transfer-of-decabromodiphenyl-ether-bde-209-results-in-disruption-of-the-thyroid-system-and-developmental-toxicity-in-zebrafish-offspring
#19
Zhihua Han, Yufei Li, Shenghu Zhang, Ninghui Song, Huaizhou Xu, Yao Dang, Chunsheng Liu, John P Giesy, Hongxia Yu
Decabromodiphenyl ether (BDE-209) was one of most widely-used polybrominated diphenyl ether (PBDE) flame retardants and is frequently detected in both abiotic and biotic samples from environment. However, knowledge of its transgenerational risks is limited. Here, 4-month-old zebrafish were exposed to various concentrations of BDE-209 (0, 3, 30 or 300μg/L) for 28days and spawned in clean water without BDE-209. Concentrations of triiodothyronine (T3) and thyroxine (T4) as well as expressions of genes involved in the hypothalamic-pituitary-thyroid (HPT) axis were measured in offspring after exposure of adult zebrafish to BDE-209...
September 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28672775/pediatric-toxic-polycystic-thyroid
#20
Janeil M Belle, Nektarios Vasilottos, Todd D Nebesio, Benjamin C James
BACKGROUND: Polycystic thyroid disease (PCTD) is a rare condition and has been described in adults in the setting of subclinical and clinical hypothyroidism. We present the first known case of a pediatric patient with diffuse macrocystic degeneration of the thyroid. CLINICAL PRESENTATION: A 6-year-old previously healthy patient was evaluated after presenting with a 16-month history of an enlarging polycystic thyroid and hyperthyroidism. Markers of autoimmune thyroid disease including thyroid stimulating immunoglobulin (TSI), thyroid stimulating hormone (TSH) receptor antibody, thyroid peroxidase antibody and thyroglobulin antibody were negative...
July 26, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
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