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Thyrotropin

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https://www.readbyqxmd.com/read/28538378/effects-of-intensive-training-on-menstrual-function-and-certain-serum-hormones-and-peptides-related-to-the-female-reproductive-system
#1
Geum Joon Cho, Sung Won Han, Jung-Ho Shin, Tak Kim
The aim of this study was to assess the effects of intensive training on menstrual function and related serum hormones and peptides.Forty female participants who attended a training course for an officer at the Korea Third Military Academy, and had regular menstrual periods were enrolled. Menstrual questionnaires and fasting blood samples were collected before entry and at 4-week intervals for 8 weeks. The levels of corticotropin-releasing hormone (CRH), cortisol, prolactin, endorphin-β, neuropeptide Y (NPY), leptin, orexin-A, ghrelin, follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), thyrotropin (TSH), and thyroxine (T4) were determined...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28530326/-serum-thyroglobulin-levels-and-estimated-iodine-intake-in-adults-exposed-to-iodine%C3%A2-diluted-desalinated-drinking-water
#2
Dov Gefel, Svetlana Turkot, Dorit Aharoni, Shlomo Fytlovich, Yaniv S Ovadia
AIMS: The aim of this study was to describe thyroglobulin levels and iodine intake estimations in a convenience sample of Israeli adults without TD in the Ashkelon District, where SWRO desalination has become the major source of drinking water. BACKGROUND: Iodine deficiency (ID) is a significant risk factor for thyroid disease (TD). Recently, there were increases in both selfreported use of TD medication among Israeli adults and the national use of sea water reverse osmosis (SWRO) desalinated water...
August 2016: Harefuah
https://www.readbyqxmd.com/read/28524176/lentivirus-mediated-microrna-124-gene-modified-bone-marrow-mesenchymal-stem-cell-transplantation-promotes-the-repair-of-spinal-cord-injury-in-rats
#3
Jia-Lin Song, Wei Zheng, Wei Chen, Yun Qian, Yuan-Ming Ouyang, Cun-Yi Fan
Our study aims to explore the effects of lentivirus-mediated microRNA-124 (miR-124) gene-modified bone marrow mesenchymal stem cell (BMSC) transplantation on the repair of spinal cord injury (SCI) in rats. BMSCs were isolated from the bone marrow of rats. The target gene miR-124 was identified using a luciferase-reporter gene assay. Seventy-two rats were selected for construction of the SCI model, and the rats were randomly divided into the blank group, sham group, SCI group, negative control (NC) group, overexpressed miR-124 group and si-PDXK group...
May 19, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28515030/congenital-central-hypothyroidism-caused-by-a-novel-tsh-beta-subunit-gene-mutation-c-94g-a-in-two-siblings
#4
Bayram Özhan, Özlem Boz Anlaş, Bilge Sarıtepe, Burcu Albuz, Nur Gündüz Semerci
Congenital central hypothyroidism (C-CH) is a very rare disease. Alterations in genes included in pituitary development, mutations of the immunoglobulin superfamily member 1 (IGSF1) and transducin β-like protein 1(TBL1X ) can result in C-CH with multiple pituitary hormone deficiencies. However, mutations of the thyrotropin-releasing hormone receptor or TSH-beta (TSHB) gene are responsible for isolated congenital central hypothyroidism. In this paper, we present 2 patients from the same Turkish family with a novel mutation of TSHB...
May 17, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28505591/factors-associated-with-serum-thyroglobulin-in-a-ukrainian-cohort-exposed-to-iodine-131-from-the-accident-at-the-chernobyl-nuclear-plant
#5
Kamau O Peters, Mykola Tronko, Maureen Hatch, Valeriy Oliynyk, Galyna Terekhova, Ruth M Pfeiffer, Victor M Shpak, Robert J McConnell, Vladimir Drozdovitch, Mark P Little, Lydia B Zablotska, Kiyohiko Mabuchi, Alina V Brenner, Elizabeth K Cahoon
BACKGROUND: Serum thyroglobulin (Tg) is associated with the presence of thyroid disease and has been proposed as a biomarker of iodine status. Few studies have examined factors related to serum Tg in populations environmentally exposed to ionizing radiation and living in regions with endemic mild-to-moderate iodine deficiency. METHODS: We screened 10,430 individuals who were living in Ukraine and under 18 years of age at the time of the 1986 Chernobyl Nuclear Power Plant accident for thyroid disease from 2001 to 2003...
May 12, 2017: Environmental Research
https://www.readbyqxmd.com/read/28502654/radiation-induced-hypothyroidism-in-patients-with-breast-cancer-a-retrospective-analysis-of-243-cases
#6
Gul Kanyilmaz, Meryem Aktan, Mehmet Koc, Hikmettin Demir, Lutfi Saltuk Demir
This study aims to estimate the incidence of hypothyroidism (HT) and to evaluate the predictors affecting the development of HT after radiotherapy (RT) for breast cancer, with a focus on radiation dose-volumetric parameters. Between 2009 and 2015, 243 patients undergoing RT for breast cancer were retrospectively analyzed. Free triiodothyronine (FT3), free thyroxin (FT4), and thyrotropin (TSH) were monitored before and after RT. The relation between the doses to thyroid gland (Dmean, Dmax, Dmin), percentage of thyroid volume receiving > 10 Gy, 20 Gy, 30 Gy, 40 Gy, and 50 Gy (V10 to V50), absolute thyroid volume, and HT were analyzed...
May 11, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28493136/risk-factors-for-cardiovascular-disease-in-subclinical-hypothyroidism
#7
F Decandia
Subclinical hypothyroidism (SH), defined as an increased serum thyrotropin (TSH) level and normal plasma-free thyroid hormones' concentrations, is common in the general population, in particular, among elderly women. Its prevalence ranges from 4 to 15% and up to 20% among females aged > 60 year. Although SH has been associated with atherosclerotic cardiovascular disease (CVD), it is acknowledged that the high prevalence of dyslipidemia in elderly people is considered a common biochemical condition. Therefore, whether SH is associated with a higher risk for CVD is still controversial...
May 10, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28484426/structural-functional-features-of-the-thyrotropin-receptor-a-class-a-g-protein-coupled-receptor-at-work
#8
REVIEW
Gunnar Kleinau, Catherine L Worth, Annika Kreuchwig, Heike Biebermann, Patrick Marcinkowski, Patrick Scheerer, Gerd Krause
The thyroid-stimulating hormone receptor (TSHR) is a member of the glycoprotein hormone receptors, a sub-group of class A G-protein-coupled receptors (GPCRs). TSHR and its endogenous ligand thyrotropin (TSH) are of essential importance for growth and function of the thyroid gland and proper function of the TSH/TSHR system is pivotal for production and release of thyroid hormones. This receptor is also important with respect to pathophysiology, such as autoimmune (including ophthalmopathy) or non-autoimmune thyroid dysfunctions and cancer development...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28476565/a-simple-short-term-method-to-study-thyroid-disruption-using-a-fetal-rat-thyroid-culture
#9
Pablo Olivares-Trigo, Camilo Fuentes Peña, María Fernanda Cavieres
INTRODUCTION: Thyroid modulation activity has not been investigated for many chemical substances. Due to ethical, practical and financial reasons, in vivo evaluation of a large number of compounds is not feasible. It has been proposed that an in vitro mechanism-based strategy could be more adequate for the identification of thyroid hormone disrupting chemicals. Here we describe a simple and mostly inexpensive, short term culture assay to study thyroid disruption. METHODS: Fetal thyroids collected from gestation day 20...
May 2, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28474257/a-cumulative-effect-involving-malfunction-of-the-pth1r-and-atp4a-genes-explains-a-familial-gastric-neuroendocrine-tumor-with-hypothyroidism-and-arthritis
#10
Oriol Calvete, Maite Herraiz, Jose Reyes, Ana Patiño, Javier Benitez
BACKGROUND: Type I gastric neuroendocrine tumors (gNETs) classically arise because of hypergastrinemia and involve destruction of parietal cells, which are responsible for gastric acid secretion through the ATP4A proton pump and for intrinsic factor production. METHODS: By whole exome sequencing, we studied a family with three members with gNETs plus hypothyroidism and rheumatoid arthritis to uncover their genetic origin. RESULTS: A heterozygous missense mutation in the ATP4A gene was identified...
May 4, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28471415/impact-of-gravity-on-thyroid-cells
#11
REVIEW
Elisabetta Albi, Marcus Krüger, Ruth Hemmersbach, Andrea Lazzarini, Samuela Cataldi, Michela Codini, Tommaso Beccari, Francesco Saverio Ambesi-Impiombato, Francesco Curcio
Physical and mental health requires a correct functioning of the thyroid gland, which controls cardiovascular, musculoskeletal, nervous, and immune systems, and affects behavior and cognitive functions. Microgravity, as occurs during space missions, induces morphological and functional changes within the thyroid gland. Here, we review relevant experiments exposing cell cultures (normal and cancer thyroid cells) to simulated and real microgravity, as well as wild-type and transgenic mice to hypergravity and spaceflight conditions...
May 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28469599/the-role-of-thyrotropin-receptor-activation-in-adipogenesis-and-modulation-of-fat-phenotype
#12
Mohd Shazli Draman, Michael Stechman, David Scott-Coombes, Colin M Dayan, Dafydd Aled Rees, Marian Ludgate, Lei Zhang
Evidence from clinical and experimental data suggests that thyrotropin receptor (TSHR) signaling is involved in energy expenditure through its impact on white adipose tissue (WAT) and brown adipose tissue (BAT). TSHR expression increases during mesenchymal stem cell (MSC) differentiation into fat. We hypothesize that TSHR activation [TSHR*, elevated thyroid-stimulating hormone, thyroid-stimulating antibodies (TSAB), or activating mutation] influences MSC differentiation, which contributes to body composition changes seen in hypothyroidism or Graves' disease (GD)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28468766/regorafenib-induced-hypothyroidism-and-cancer-related-fatigue-is-there-a-potential-link
#13
Fabiana Pani, Matteo Massidda, Valeria Pusceddu, Marco Puzzoni, Elena Massa, Clelia Madeddu, Mario Scartozzi, Stefano Mariotti
OBJECTIVE: Thyroid dysfunction has been reported during Regorafenib (Reg) administration, but no detailed study is presently available. DESIGN: Prospective, observational cohort study. Patients with documented metastatic colorectal cancer and progression of disease during or within 3 months after the last standard therapy, with no evidence and history of previous thyroid disease were enrolled. METHODS: Twenty-five consecutive patients were evaluated before and 8-50 weeks after initiating Reg therapy by monthly clinical, ultrasound and laboratory (thyrotropin [TSH], free thyroxine [fT4], antithyroglobulin [TgAb] and antithyroid peroxidase [TPOAb]) evaluation...
May 3, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28461507/evolutionarily-conserved-trh-neuropeptide-pathway-regulates-growth-in-caenorhabditis-elegans
#14
Elien Van Sinay, Olivier Mirabeau, Geert Depuydt, Matthias Boris Van Hiel, Katleen Peymen, Jan Watteyne, Sven Zels, Liliane Schoofs, Isabel Beets
In vertebrates thyrotropin-releasing hormone (TRH) is a highly conserved neuropeptide that exerts the hormonal control of thyroid-stimulating hormone (TSH) levels as well as neuromodulatory functions. However, a functional equivalent in protostomian animals remains unknown, although TRH receptors are conserved in proto- and deuterostomians. Here we identify a TRH-like neuropeptide precursor in Caenorhabditis elegans that belongs to a bilaterian family of TRH precursors. Using CRISPR/Cas9 and RNAi reverse genetics, we show that TRH-like neuropeptides, through the activation of their receptor TRHR-1, promote growth in Celegans TRH-like peptides from pharyngeal motor neurons are required for normal body size, and knockdown of their receptor in pharyngeal muscle cells reduces growth...
May 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28444138/the-evolution-of-neuropeptide-signalling-insights-from-echinoderms
#15
Dean C Semmens, Maurice R Elphick
Neuropeptides are evolutionarily ancient mediators of neuronal signalling that regulate a wide range of physiological processes and behaviours in animals. Neuropeptide signalling has been investigated extensively in vertebrates and protostomian invertebrates, which include the ecdysozoans Drosophila melanogaster (Phylum Arthropoda) and Caenorhabditis elegans (Phylum Nematoda). However, until recently, an understanding of evolutionary relationships between neuropeptide signalling systems in vertebrates and protostomes has been impaired by a lack of genome/transcriptome sequence data from non-ecdysozoan invertebrates...
April 21, 2017: Briefings in Functional Genomics
https://www.readbyqxmd.com/read/28438786/vegfr2-but-not-vegfr3-governs-integrity-and-remodeling-of-thyroid-angiofollicular-unit-in-normal-state-and-during-goitrogenesis
#16
Jeon Yeob Jang, Sung Yong Choi, Intae Park, Do Young Park, Kibaek Choe, Pilhan Kim, Young Keum Kim, Byung-Joo Lee, Masanori Hirashima, Yoshiaki Kubota, Jeong-Won Park, Sheue-Yann Cheng, Andras Nagy, Young Joo Park, Kari Alitalo, Minho Shong, Gou Young Koh
Thyroid gland vasculature has a distinguishable characteristic of endothelial fenestrae, a critical component for proper molecular transport. However, the signaling pathway that critically governs the maintenance of thyroid vascular integrity, including endothelial fenestrae, is poorly understood. Here, we found profound and distinct expression of follicular epithelial VEGF-A and vascular VEGFR2 that were precisely regulated by circulating thyrotropin, while there were no meaningful expression of angiopoietin-Tie2 system in the thyroid gland...
April 24, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28436021/burning-mouth-syndrome-results-of-screening-tests-for-vitamin-and-mineral-deficiencies-thyroid-hormone-and-glucose-levels-experience-at-mayo-clinic-over-a-decade
#17
Claudia S Morr Verenzuela, Mark D P Davis, Alison J Bruce, Rochelle R Torgerson
BACKGROUND: Burning mouth syndrome (BMS) is a disorder characterized by chronic mouth pain in the absence of objective clinical abnormalities. Vitamin or mineral deficiencies may have a role in BMS, but data regarding the prevalence and relevance of hematinic deficiencies are conflicting. We aimed to determine the frequency of specific laboratory abnormalities in patients with BMS. METHODS: We retrospectively reviewed the results of screening blood tests in patients with BMS at our institution between January 2003 and December 2013...
April 23, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28434012/clinical-importance-of-somatostatin-receptor-2-sstr2-and-somatostatin-receptor-5-sstr5-expression-in-thyrotropin-producing-pituitary-adenoma-tshoma
#18
Benxia Yu, Zhongsheng Zhang, Hao Song, Yuchun Chi, Chunling Shi, Miao Xu
BACKGROUND Thyrotropin-secreting pituitary adenomas (TSHomas) are a rare cause of hyperthyroidism. Somatostatin analogs have proved to be effective for inhibiting pituitary hormones secretion, working via interactions with somatostatin receptors (SSTRs). Moreover, antiproliferative activity of somatostatin analog is now demonstrated in several studies. In the present study, we determined the relative predominance of SSTR2 and SSTR5 subtypes among the different types of adenomas, especially TSHoma, and investigated the relationship between efficacy of short-term octreotide (OCT) treatment and SSTR expression...
April 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28432797/effects-of-levothyroxine-administration-and-withdrawal-on-the-hypothalamic-pituitary-thyroid-axis-in-euthyroid-dogs
#19
V Ziglioli, D L Panciera, G C Troy, W E Monroe, K M Boes, K R Refsal
BACKGROUND: Chronic supplementation can suppress the hypothalamic-pituitary-thyroid axis (HPTA) and make it difficult to assess thyroid function after withdrawal of levothyroxine. OBJECTIVES: To determine whether the HPTA is suppressed after levothyroxine administration in euthyroid dogs and the time required for resolution of any suppression. ANIMALS: Twenty-eight healthy euthyroid dogs. METHODS: A prospective, randomized study administering levothyroxine to euthyroid dogs for 8 weeks (group 1) or 16 weeks (group 2)...
May 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28428694/a-microarray-immunoassay-for-serum-thyrotropin-and-thyroglobulin-using-antibodies-immobilized-on-track-etched-membranes
#20
Bharti Jain, J Kumarasamy, Chandrakala Gholve, Savita Kulkarni, M G R Rajan
Serum thyroglobulin (Tg) and thyroid stimulating hormone (TSH) measurements have evolved as important analytes for monitoring the prognosis of patients with differentiated thyroid cancer, post-thyroidectomy. Individual analyte immunoassay is the current practice in clinical pathology, but the simultaneous assay for all relevant analytes for a given disease, can reduce assay costs, improve patient compliance and give the clinician more information for an unequivocal diagnosis. Microarray immunoassay (MI) can achieve this goal and, hence, we have developed and validated a immuno-radiometric MI for quantitation of serum TSH and Tg by using highly micro-porous polycarbonate (PC) track-etched membranes (TEM) to immobilize the monoclonal anti-TSH and polyclonal anti-Tg antibodies in ~1 mm diameter spots...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
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