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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
#1
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/29144817/seasonal-variation-of-vitamin-d-and-serum-thyrotropin-levels-and-its-relationship-in-a-euthyroid-caucasian-population
#2
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/29144197/evaluation-of-umelisa-%C3%A2-t4-neonatal-and-umelisa-%C3%A2-t4-using-polystyrene-plates-coated-with-anti-thyroxine-t4-monoclonal-antibodies
#3
Elisa M Castells, Ernesto C González, Pedro L Pérez, Lesley Del Río, Yileidis Tejeda, Yenitse Perea, Odalys Martín, Maryeris Espinosa, Jose A Rivero, Amarilys Frómeta
Congenital hypothyroidism is one of the most common preventable causes of mental retardation. The Center of Immunoassay has developed the UMELISA(®) T4 NEONATAL and UMELISA(®) T4 to determine neonatal T4 levels in dried blood and serum samples. Both reagent kits use the same polystyrene plates coated with anti- thyroxine (T4) polyclonal antibodies as solid phase. This work shows the re-standardization of the UMELISA(®) T4 NEONATAL and UMELISA(®) T4 using plates coated with anti-T4 monoclonal antibodies (T4Mabs)...
November 16, 2017: Journal of Immunoassay & Immunochemistry
https://www.readbyqxmd.com/read/29125479/plasma-3-3-5-triiodo-l-thyronine-t3-level-mirrors-changes-in-tumor-markers-in-two-cases-of-metastatic-cancer-of-the-breast-and-pancreas-treated-with-exogenous-l-t3
#4
Alejandro Rodríguez-Molinero, Aleck Hercbergs, Manuel Sarrias, Antonio Yuste
Preclinical studies have attributed 3,3',5-triiodo-L-thyronine (T3) a direct negative effect on tumor progression, as well as chemosensitizing, differentiating and immunomodulatory properties. On the other hand, L-thyroxine (T4), via a thyroid hormone receptor on plasma membrane integrin αvβ3, promotes solid tumor growth and neoangiogenesis, therefore lowering endogenous T4 reduces tumor growth rate. We present the case of two patients with metastatic triple negative breast cancer and metastatic pancreatic cancer respectively, who benefit of the sole treatment with antithyroid drugs and exogenous administration of T3 (liothyronine)...
November 3, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29124017/optimization-of-an-in-vitro-assay-methodology-for-competitive-binding-of-thyroidogenic-xenobiotics-with-thyroxine-on-human-transthyretin-and-albumin
#5
Katie L Hill, Timo Hamers, Jorke H Kamstra, William G Willmore, Robert J Letcher
Thyroid hormones (THs) are involved in the regulation of many physiological processes in vertebrates. Competition for TH binding sites on serum transport proteins can interfere with delivery of THs to target tissues, and this is a potential mechanism of action of exogenous thyroidogenic substances. To date, detailed accounts of in vitro methods for competitive binding with THs on TH transport proteins (human or wildlife) are sparse. In the limited number of published studies on in vitro radio-labelled TH-TH transport protein interactions, method descriptions were brief and with insufficient details for successful replication...
2017: MethodsX
https://www.readbyqxmd.com/read/29118715/differential-regulation-of-thyroid-hormone-metabolism-target-genes-during-non-thyoidal-illness-syndrome-triggered-by-fasting-or-sepsis-in-adult-mice
#6
Klaus N Fontes, Adriana Cabanelas, Flavia F Bloise, Cherley Borba Vieira de Andrade, Luana L Souza, Marianna Wilieman, Isis H Trevenzoli, Lais C Agra, Johnatas D Silva, Christianne Bandeira-Melo, Pedro L Silva, Patricia R M Rocco, Tania M Ortiga-Carvalho
Fasting and sepsis induce profound changes in thyroid hormone (TH) central and peripheral metabolism. These changes affect TH action and are called the non-thyroidal illness syndrome (NTIS). To date, it is still debated whether NTIS represents an adaptive response or a real hypothyroid state at the tissue level. Moreover, even though it has been considered the same syndrome, we hypothesized that fasting and sepsis induce a distinct set of changes in thyroid hormone metabolism. Herein, we aimed to evaluate the central and peripheral expression of genes involved in the transport (MCT8/Slc16a2 and MCT10/Slc16a10), metabolism (Dio1, Dio2, and Dio3) and action (Thra and Thrb) of TH during NTIS induced by fasting or sepsis...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29117664/pituitary-abscess-with-unusual-clinical-course
#7
Milica Medić Stojanoska, Duško Kozić, Mladen Bjelan, Petar Vuleković, Nada Vučković, Bojan Vuković, Branka Kovačev Zavišić
The aim is to present unusual clinical course and magnetic resonance imaging (MRI) features of pituitary abscess. A 59-year-old man presented with fever, polyuria, polydipsia and marked weight loss within the last two months. Basic endocrinology tests revealed the presence of anterior pituitary dysfunction, associated with central diabetes insipidus and increased levels of inflammatory markers. The presence of expansile sellar lesion, showing restricted diffusion signal pattern compatible with acute pituitary pyogenic abscess was found on MRI...
December 2016: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29113916/temperature-induced-variation-in-gene-expression-of-thyroid-hormone-receptors-and-deiodinases-of-european-eel-anguilla-anguilla-larvae
#8
S N Politis, A Servili, D Mazurais, J-L Zambonino-Infante, J J Miest, J Tomkiewicz, I A E Butts
Thyroid hormones (THs) are key regulators of growth, development, and metabolism in vertebrates and influence early life development of fish. TH is produced in the thyroid gland (or thyroid follicles) mainly as T4 (thyroxine), which is metabolized to T3 (3,5,3'-triiodothyronine) and T2 (3,5-diiodothyronine) by deiodinase (DIO) enzymes in peripheral tissues. The action of these hormones is mostly exerted by binding to a specific nuclear thyroid hormone receptor (THR). In this study, we i) cloned and characterized thr sequences, ii) investigated the expression pattern of the different subtypes of thrs and dios, and iii) studied how temperature affects the expression of those genes in artificially produced early life history stages of European eel (Anguilla anguilla), reared in different thermal regimes (16, 18, 20 and 22°C) from hatch until first-feeding...
November 4, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29112047/memantine-an-nmda-receptor-antagonist-prevents-thyroxin-induced-hypertension-but-not-cardiac-remodeling
#9
Steven J Repas, Nancy S Saad, Paul M L Janssen, Mohammad T Elnakish
Stimulation of glutamatergic tone has been causally linked to myocardial pathogenesis and amplified systemic blood pressure (BP). Memantine, a noncompetitive N-methyl-D-aspartate glutamatergic receptor (NMDA-R) antagonist, has been proposed to be an active cardioprotective drug. However, the efficacy of memantine and subsequently the possible involvement of the NMDA-R in the thyroxin (T4)-induced cardiovascular complications have never been investigated. We examined the effect of memantine (30 mg·kg·d) on the T4 (500 μg·kg·d)-provoked increase in mouse BP, cardiac hypertrophy indicated by enlarged overall myocardial mass, and reformed reactions of the contractile myocardium both in vivo and ex vivo after 2 weeks of treatment...
November 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/29105255/analysis-of-current-thyroid-function-test-ordering-practices
#10
Joseph K Kluesner, Darrick J Beckman, Joshua M Tate, Alexis A Beauvais, Maria I Kravchenko, Jana L Wardian, Sky D Graybill, Jeffrey A Colburn, Irene Folaron, Mark W True
RATIONALE: Current guidelines recommend thyroid stimulating hormone (TSH) alone as the best test to detect and monitor thyroid dysfunction, yet free thyroxine (FT4) and free triiodothyronine (FT3) are commonly ordered when not clinically indicated. Excessive testing can lead to added economic burden in an era of rising healthcare costs, while rarely contributing to the evaluation or management of thyroid disease. OBJECTIVE: To evaluate our institution's practice in ordering thyroid function tests (TFTs) and to identify strategies to reduce inappropriate FT4 and FT3 testing...
November 3, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/29105177/reference-intervals-of-trimester-specific-thyroid-stimulating-hormone-and-free-thyroxine-in-chinese-women-established-by-experimental-and-statistical-methods
#11
Lican Han, Wei Zheng, Yanhong Zhai, Xin Xie, Jingnan Zhang, Shaozu Zhang, Zhen Zhao, Zheng Cao
BACKGROUND: As a result of physiological and metabolic changes during pregnancy, thyroid hormones can be affected significantly throughout entire three trimesters. According to the guidelines published by American Thyroid Association in 2017, it is strongly recommended to establish population-based trimester-specific and assay method-specific reference intervals (RIs) using local population. METHODS: A total of 1209 pregnant women without personal or family history of thyroid disease were recruited from July 2015 to April 2017 at Beijing Obstetrics and Gynecology Hospital...
November 4, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/29102271/prevalence-of-malnutrition-inflammation-complex-syndrome-and-its-correlation-with-thyroid-hormones-in-chronic-haemodialysis-patients
#12
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/29099709/sulphur-containing-amino-acids-metabolism-in-experimental-hyper-and-hypothyroidism-in-rats
#13
V Nechiporuk, N Zaichko, М Korda, A Melnyk, O Koloshko
Hyper- and hypothyroidism are some of the most common endocrinopathies that cause many metabolic disorders including amino acids metabolism. However, a specific molecular mechanism of thyroid hormones influence on sulphur-containing amino acids metabolism has not been established. The aim of our research was to investigate experimentally the influence of thyroid gland functional state on the main enzymatic systems of sulphur-containing amino acids metabolism in liver and kidneys, the content of homocysteine, cysteine and H2S in blood...
October 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29084189/-multiorgan-malfunction-after-fontan-operation-in-adult-patients
#14
Monika Smaś-Suska, Paweł Iwaszczuk, Beata Róg, Piotr Weryński, Maria Olszowska, Piotr Podolec, Lidia Tomkiewicz-Pająk
Although 85% of patients with univentricular heart after Fontan procedure survive twenty years after operation, the procedure alone seems to be an inadequate treatment as a permanent clinical solution. Patients with a "Fontan physiology" additionally have to face a various extra-cardiac complications, including thyroid, liver and kidney dysfunction, which are not only potentially life-threatening, but also can potentiate the circulatory insufficiency. AIM: The aim of the study was to assess a multiorgan dysfunction in adult patients after Fontan operation in long term follow-up and compare to healthy controls...
October 23, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29079274/glomerular-filtration-rate-is-associated-with-free-triiodothyronine-in-euthyroid-subjects-comparison-between-various-equations-to-estimate-renal-function-and-creatinine-clearance
#15
Josephine L C Anderson, Eke G Gruppen, Lynnda van Tienhoven-Wind, Michele F Eisenga, Hanne de Vries, Ron T Gansevoort, Stephan J L Bakker, Robin P F Dullaart
BACKGROUND: Effects of variations in thyroid function within the euthyroid range on renal function are unclear. Cystatin C-based equations to estimate glomerular filtration rate (GFR) are currently advocated for mortality and renal risk prediction. However, the applicability of cystatin C-based equations is discouraged in patients with overt thyroid dysfunction, since serum cystatin C and creatinine levels are oppositely affected by thyroid dysfunction. Here, we compared relationships of thyroid stimulating hormone (TSH), free thyroxine (FT4) and free triiodothyronine (FT3) with various measures of kidney function in euthyroid subjects...
October 24, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/29072514/effectiveness-of-matricaria-chamomilla-chamomile-extract-on-pain-control-of-cyclic-mastalgia-a-double-blind-randomised-controlled-trial
#16
N Saghafi, H Rhkhshandeh, N Pourmoghadam, L Pourali, M Ghazanfarpour, A Behrooznia, F Vafisani
Breast pain (mastalgia) often precedes menstrual period, which is of mild to moderate severity. This study was performed to determine the effectiveness of chamomile on pain control of cyclic mastalgia. This double-blind randomised controlled clinical trial was conducted on 60 patients with mastalgia referred to the breast clinic of an academic hospital, Mashhad University of Medical Sciences. The patients were randomly allocated into two groups: chamomile (n = 30) and placebo (n = 30). Primary outcomes were: (1) assessment of the visual analogue scale (VAS) and (2) assessment of the breast pain chart (BPC) 8 weeks after initial intervention...
October 26, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29067046/subclinical-hypothyroidism-frequency-clinical-presentations-and-treatment-indications
#17
Mubashir Alam Khan, Tasnim Ahsan, Urooj Lal Rehman, Rukhshanda Jabeen, Saad Farouq
OBJECTIVE: To determine the frequency, modes of clinical presentation and indications for replacement therapy in a cohort of patients with subclinical hypothyroidism (SCH). METHODS: This study was conducted at the Endocrine and Diabetes Unit of Jinnah Postgraduate Medical Centre from September 2007 - October 2015. This was a retrospective chart analysis of prospectively collected data in whichthe medical records of 4448 patients who had presented to the Endocrine Clinic from 2007 to 2015 were reviewed...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29064128/the-association-between-change-in-serum-bicarbonate-and-change-in-thyroid-hormone-levels-in-patients-receiving-conventional-or-more-frequent-maintenance-hemodialysis
#18
Alessio Molfino, Gerald J Beck, Minwei Li, Joan C Lo, George A Kaysen
AIM: Correction of metabolic acidosis in patients with chronic kidney disease has been associated with improvement in thyroid function. We examined whether changes in bicarbonate were associated with changes in thyroid function in patients with end-stage renal disease receiving conventional or more frequent hemodialysis. METHODS: In the Frequent Hemodialysis Network Trials, the relationship between changes in serum bicarbonate, free triiodothyronine (FT3) and free thyroxine (FT4) was examined among 147 and 48 patients with endogenous thyroid function who received conventional (3x/week) or more frequent (6x/week) hemodialysis (Daily Trial) or who received conventional or more frequent nocturnal hemodialysis (Nocturnal Trial)...
October 24, 2017: Nephrology
https://www.readbyqxmd.com/read/29064111/acoustic-radiation-force-impulse-quantification-in-the-evaluation-of-thyroid-elasticity-in-pediatric-patients-with-hashimoto-thyroiditis
#19
Serap Yucel, Meltem Ceyhan Bilgici, Cengiz Kara, Gulay Can Yilmaz, H Murat Aydin, Muzaffer Elmali, Leman Tomak, Dilek Saglam
OBJECTIVES: To evaluate the parenchymal elasticity of the thyroid gland with acoustic radiation force impulse imaging in pediatric patients with Hashimoto thyroiditis and to compare it with healthy volunteers. METHODS: Twenty-six patients with Hashimoto thyroiditis and 26 healthy volunteers between 6 and 17 years were included. The shear wave velocity (SWV) values of both thyroid lobes in both groups were evaluated. RESULTS: The age and sex characteristics of the controls and patients with Hashimoto thyroiditis were similar...
October 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29063198/dental-fluorosis-nutritional-status-kidney-damage-and-thyroid-function-along-with-bone-metabolic-indicators-in-school-going-children-living-in-fluoride-affected-hilly-areas-of-doda-district-jammu-and-kashmir-india
#20
Arjun L Khandare, Shankar Rao Gourineni, Vakdevi Validandi
A case-control study was undertaken among the school children aged 8-15 years to know the presence and severity of dental fluorosis, nutrition and kidney status, and thyroid function along with bone metabolic indicators in Doda district situated at high altitude where drinking water was contaminated and heat stress. This study included 824 participants with an age of 8-15 years. The results of the study reviled that dental fluorosis was significantly higher in affected than control area children. Urinary fluoride was significantly higher (p < 0...
October 23, 2017: Environmental Monitoring and Assessment
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