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https://www.readbyqxmd.com/read/28207545/primary-hypothyroidism-in-the-community-lower-daily-dosages-of-levothyroxine-replacement-therapy-for-asian-patients
#1
Ngiap Chuan Tan, Rong Quan Chew, Yi Ling Eileen Koh, Reena Chandini Subramanian, Usha Sankari, Meykkumar Meyappan, Li Wei Cho
The goal of treatment in patients with primary hypothyroidism is to attain euthyroidism guided by the stipulated thyroid-stimulating hormone (TSH) levels range so as to minimize any potential long-term adverse effects. However, various factors may result in their Levothyroxine (T4) under and over-replacement.Our study aimed to evaluate the mean daily dose of L-T4 replacement for Asian patients with primary hypothyroidism. The secondary aims were to determine the proportion of those who were either over or under-replaced, and the factors associated with their thyroid function status and replacement adherence...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28199771/thyroid-dysfunction-in-children-with-autism-spectrum-disorder-is-associated-with-folate-receptor-alpha-autoimmune-disorder
#2
Richard E Frye, Rebecca Wynne, Shannon Rose, John Slattery, Leanna Delhey, Marie Tippett, Stephen G Kahler, Sirish C Bennuri, Stepan Melnyk, Jeffrey M Sequeira, Edward Quadros
Folate receptor α (FRα) autoantibodies (FRAAs) are prevalent in Autism Spectrum Disorder (ASD). FRAAs disrupt folate transport across the blood-brain barrier by binding to the FRα. Thyroid dysfunction is frequently found in children with ASD. We measured blocking and binding FRAAs and thyroid stimulating hormone (TSH), free T4 (FT4), total T3 (TT3), reverse T3 (rT3), thyroid releasing hormone (TRH) and other metabolites in 87 children with ASD, 84 of whom also underwent behavior and cognition testing and in 42 of whom FRAAs, TSH and FT4 were measured at two time points...
February 15, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28199740/incidence-of-abnormal-liver-biochemical-tests-in-hyperthyroidism
#3
Tiffany Y Lin, Anshula O Shekar, Ning Li, Michael W Yeh, Sammy Saab, Mark Wilson, Angela M Leung
OBJECTIVE: Abnormal serum liver function tests are common in patients with untreated thyrotoxicosis, even prior to the initiation of antithyroidal medications that may worsen their severity. There is a wide range of the incidence of these abnormalities in the published literature. The aim of this study was to assess the risks factors and threshold of thyrotoxicosis severity for developing an abnormal liver biochemical test upon the diagnosis of new thyrotoxicosis. DESIGN: Single-institution retrospective cohort study...
February 15, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28176633/hypothyroidism-and-nephrotic-syndrome-why-when-and-how-to-treat
#4
Francesca Di Mario, Riccardo Pofi, Antonietta Gigante, Laura Rivoli, Edoardo Rosato, Andrea Maria Isidori, Rosario Cianci, Biagio Barbano
Hypothyroidism, characterised by low/normal free thyroxine (FT4) and free tri-iodothyronine (FT3) with elevated thyroid-stimulating hormone (TSH), is a well-known complication of nephrotic syndrome (NS). This is a common feature of primary and secondary glomerular diseases and comprises loss of protein in the urine and increased urinary excretion of thyroid hormones and thyroxine-binding globulin. With a normal thyroid reserve, this scenario is associated with the development of subclinical hypothyroidism, with a slight increase in TSH and normal free fractions...
February 7, 2017: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/28160243/association-of-iodine-and-iron-with-thyroid-function
#5
Juhua Luo, Michael Hendryx, Paul Dinh, Ka He
Iodine and iron are essential elements for healthy thyroid function. However, little is known about the association of iron and iodine with thyroid function in the general US population. We investigated iron and iodine status in relation to concentrations of thyroid hormones. We included 7672 participants aged 20 and older from three surveys (2007-2008, 2009-2010, and 2011-2012) of the National Health and Nutrition Examination Survey. Serum thyroid measures (including free and total T3 and T4, and TSH), serum iron concentration, and urinary iodine concentrations were measured...
February 3, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28158908/efficacy-of-low-dose-2-millicurie-versus-standard-dose-4-millicurie-radioiodine-treatment-for-cats-with-mild-to-moderate-hyperthyroidism
#6
J M Lucy, M E Peterson, J F Randolph, P V Scrivani, M Rishniw, D L Davignon, M S Thompson, J M Scarlett
BACKGROUND: Radioiodine ((131) I) is effective treatment for hyperthyroidism in cats, but optimal dose to restore euthyroidism without inducing hypothyroidism is unclear. Treatment-induced hypothyroidism can lead to azotemia and reduced duration of survival. OBJECTIVE: To compare efficacy and short-term outcomes of low-dose (131) I versus higher, standard-dose (131) I as treatment for hyperthyroidism. ANIMALS: A total of 189 client-owned cats undergoing (131) I treatment for mild-to-moderate hyperthyroidism (serum T4 ≥ 4...
February 3, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28153798/thyroid-hormone-biosynthesis-and-release
#7
Denise P Carvalho, Corinne Dupuy
Thyroid hormones (TH) 3,5,3',5'- tetraiodothyronine or thyroxine (T4) and 3,5,3'- triiodothyronine (T3) contain iodine atoms as part of their structure, and their synthesis occur in the unique structures called thyroid follicles. Iodide reaches thyroid cells through the bloodstream that supplies the basolateral plasma membrane of thyrocytes, where it is avidly taken up through the sodium/iodide symporter (NIS). Thyrocytes are also specialized in the secretion of the high molecular weight protein thyroglobulin (TG) in the follicular lumen...
January 31, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28153396/associations-between-urinary-phthalate-metabolites-and-bisphenol-a-levels-and-serum-thyroid-hormones-among-the-korean-adult-population-korean-national-environmental-health-survey-konehs-2012-2014
#8
Choonghee Park, Wookhee Choi, Moonyoung Hwang, Youngmee Lee, Suejin Kim, Seungdo Yu, Inae Lee, Domyung Paek, Kyungho Choi
BACKGROUND: Phthalates and bisphenol A (BPA) have been used extensively in many consumer products, resulting in widespread exposure in the general population. Studies have suggested associations between exposure to phthalates and BPA, and serum thyroid hormone levels, but confirmation on larger human populations is warranted. METHODS: Data obtained from nationally representative Korean adults (n=6003) recruited for the second round of the Korean National Environmental Health Survey (KoNEHS), 2012-2014, were employed...
January 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28151692/oral-liquid-levothyroxine-solves-the-problem-of-tablet-levothyroxine-malabsorption-due-to-concomitant-intake-of-multiple-drugs
#9
Roberto Vita, Flavia Di Bari, Salvatore Benvenga
BACKGROUND: Unlike its tablet (TAB) formulation, liquid L-T4 (LIQ) is directly absorbed in the intestine. The aim of this study was to assess whether LIQ was superior to TAB, such that it would overcome the interference induced by co-ingestion of multiple interfering drugs (ID). METHODS: In this prospective cohort study, we recruited 11 patients with apparent reduced TAB absorption due to ≥2 ID, and switched them to LIQ while maintaining the daily dose and the co-ingestion of the ID...
February 2, 2017: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/28149142/correlation-of-rk39-specific-antibodies-and-thyroid-function-in-patients-with-visceral-leishmaniasis
#10
Ali Ibrahim Ali Al-Ezzy, Walaa Najm Abood
OBJECTIVE: This study aimed to determine whether anti-rK39 antibodies were diagnostic markers for visceral leishmaniasis (kala-azar) and to evaluate the correlation between age and gender in disease occurrence in Iraqi patients. In addition, it aimed to evaluate the correlation between thyroid hormones, i.e., thyroid-stimulating hormone (TSH), triiodothyronine (T3), and thyroxine (T4) and anti-rK39 antibodies. MATERIALS AND METHODS: Immunochromatographic technique used for anti-rK39 antibodies detection...
October 2016: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/28144636/comparative-study-of-growth-and-gonad-maturation-in-diploid-and-triploid-marine-medaka-oryzias-dancena
#11
In-Seok Park, Hyun Woo Gil, Tae Ho Lee, Yoon Kwon Nam, Dong Soo Kim
The marine medaka, Oryzias dancena is a suitable sample as a laboratory animal because it has a small size and clearly distinguishes between female and male. Data on the growth and maturity of the diploid and triploid sea cucurbit species suitable for laboratory animals are very useful for studying other species. Triploidy was induced in the marine medaka by cold shock treatment (0°C) of fertilized eggs for 45 min, applied two minutes after fertilization. The diploid and triploid male fish were larger than their female counterparts (P<0...
December 2016: Balsaeng'gwa Saengsig
https://www.readbyqxmd.com/read/28144592/calculation-of-thyroid-dose-with-planner-system-and-evaluation-of-thyroid-function-after-radiotherapy-for-patients-with-breast-cancer
#12
M Dorri Giv, M H Bahreini Toosi, S M R Aghamiri, F Akbari, S Taeb
BACKGROUND: Much research has widely been conducted into thyroid hormones levels following radiotherapy for breast cancer. Consequently, in this study, we evaluated to relate the rate of thyroid hormones levels with the dose distribution among breast cancer patients. MATERIAL AND METHODS: Thirty patients were treated with 4-field breast cancer radiotherapy. The dose volume histograms, the volume percentage of the thyroid absorbing respectively 20, 30, 40 and 50 Gy were then estimated (V20, V30, V40 and V50) together with the individual average thyroid dose over the whole gland derived from their computed tomography-based treatment plans...
December 2016: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28144591/calculation-of-thyroid-dose-with-planner-system-and-evaluation-of-thyroid-function-after-radiotherapy-for-patients-with-breast-cancer
#13
M Dorri Giv, M H Bahreini Toosi, S M R Aghamiri, F Akbari, S Taeb
BACKGROUND: Much research has widely been conducted into thyroid hormones levels following radiotherapy for breast cancer. Consequently, in this study, we evaluated to relate the rate of thyroid hormones levels with the dose distribution among breast cancer patients. MATERIAL AND METHODS: Thirty patients were treated with 4-field breast cancer radiotherapy. The dose volume histograms, the volume percentage of the thyroid absorbing respectively 20, 30, 40 and 50 Gy were then estimated (V20, V30, V40 and V50) together with the individual average thyroid dose over the whole gland derived from their computed tomography-based treatment plans...
December 2016: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28138749/the-relationship-between-postmenopausal-women-s-sclerostin-levels-and-their-bone-density-age-body-mass-index-hormonal-status-and-smoking-and-consumption-of-coffee-and-dairy-products
#14
Muberra Namlı Kalem, Ziya Kalem, Nilufer Akgun, Batuhan Bakırarar
PURPOSE: To investigate the relationship between postmenopausal women's sclerostin levels and bone density and the factors that may affect this relationship. MATERIALS AND METHODS: 135 postmenopausal patients' ages, BMIs, hormonal statuses, BMD values, and smoking, and consumption of coffee and dairy products were compared with their sclerostin levels. RESULTS: No statistical relationship was found between sclerostin level and age in the group with osteoporosis (p = 0...
January 31, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28138133/thyroid-hormones-and-changes-in-body-weight-and-metabolic-parameters-in-response-to-weight-loss-diets-the-pounds-lost-trial
#15
G Liu, L Liang, G A Bray, L Qi, F B Hu, J Rood, F M Sacks, Q Sun
BACKGROUND: The role of thyroid hormones in diet-induced weight loss and subsequent weight regain is largely unknown. OBJECTIVES: To examine the associations between thyroid hormones and changes in body weight and resting metabolic rate (RMR) in a diet-induced weight-loss setting. SUBJECTS/METHODS: Data analysis was conducted among 569 overweight and obese participants aged 30-70 years with normal thyroid function participating in the 2-year POUNDS LOST randomized clinical trial...
January 31, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28111157/the-tsh-levels-and-risk-of-hypothyroidism-results-from-a-population-based-prospective-cohort-study-in-an-iranian-adult-s-population
#16
Ashraf Aminorroaya, Rokhsareh Meamar, Massoud Amini, Awat Feizi, Maryam Nasri, Azamosadat Tabatabaei, Elham Faghihimani
OBJECTIVE: The aim of current study was to assess the relationship between serum TSH levels and hypothyroidism risk in the euthyroid population. METHODS: In a population-based cohort study, a total of 615 individuals with a normal baseline TSH, from of total population (n=2254) in 2006, were followed up for 6years. TSH, total T4, thyroid peroxidase antibody (TPOAb), and thyroglobulin antibody (TgAb) were measured. The relative risk (RR) and 95% confidence interval (95%CI) were calculated based on logistic regression...
January 19, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28111093/effects-of-perfluorinated-chemicals-on-thyroid-function-markers-of-ovarian-reserve-and-natural-fertility
#17
Natalie M Crawford, Suzanne E Fenton, Mark Strynar, Erin P Hines, David A Pritchard, Anne Z Steiner
Perfluorinated chemicals (PFCs) can act as endocrine-disrupting chemicals, but there has been limited study of their effects on ovarian reserve or fecundability. 99 women, 30-44 years old, without infertility were followed until pregnancy. Initially, serum was evaluated for Antimullerian hormone (AMH), thyroid hormones: thyroid stimulating hormone (TSH), thyroxine (T4), free thyroxine (fT4), and triiodothyronine (T3), and PFCs: perfluorooctanoate (PFOA), perfluorooctane sulfonate (PFOS), perfluorononanoic acid (PFNA), and perfluorohexanesulfonic acid (PFHxS)...
January 19, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28101489/correction-of-hypothyroidism-leads-to-change-in-lean-body-mass-without-altering-insulin-resistance
#18
Sangeetha Sirigiri, Suresh Vaikkakara, Alok Sachan, P V L N Srinivasarao, Sunil Epuri, Sailaja Anantarapu, Arun Mukka, Srinivasa Rao Chokkapu, Ashok Venkatanarasu, Ravi Poojari
BACKGROUND: Hypothyroidism is associated with insulin resistance, dyslipidemia, and abnormal body composition. This study assessed changes in body composition and insulin resistance after thyroxine (T4) replacement in overt hypothyroidism. METHODS: In this prospective longitudinal study carried out in a tertiary care center, adult nondiabetic patients with overt hypothyroidism were rendered euthyroid on T4. Anthropometry including skinfold thickness (SFT) at the triceps and subscapularis was recorded...
December 2016: European Thyroid Journal
https://www.readbyqxmd.com/read/28095748/myocardial-inactivation-of-thyroid-hormones-in-patients-with-aortic-stenosis
#19
Bruno Paolino, Pablo Maria Pomerantzeff, Luiz Alberto O Dallan, Fabio Antonio Gaiotto, Nailliw Zanini Preite, Ana Claudia Latronico, Jose Carlos Nicolau, Antonio Carlos Bianco, Roberto Giraldez
OBJECTIVE: To study myocardial thyroid hormone metabolism in patients with aortic valve stenosis (AS) undergoing aortic valve replacement and in patients with coronary artery disease (CAD) undergoing coronary artery bypass grafting surgery. CONTEXT: The human heart expresses the type 2 deiodinase (D2) that activates T4 to T3. At the same time, the inactivating type 3 deiodinase (D3) has been found in a rat model of right ventricular hypertrophy. It is not known whether the human myocardium metabolizes thyroid hormone...
January 17, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28077136/increased-leptin-adiponectin-ratio-relates-to-low-normal-thyroid-function-in-metabolic-syndrome
#20
Lynnda J N van Tienhoven-Wind, Robin P F Dullaart
BACKGROUND: Low-normal thyroid function within the euthyroid range may contribute to increased atherosclerosis susceptibility. The leptin/adiponectin (L/A) ratio is associated with cardiovascular disease and reflects adipose tissue dysfunction. Relationships of the L/A ratio with low-normal thyroid function are unknown. METHODS: Relationships of thyroid stimulating hormone (TSH) and free thyroxine (free T4) with leptin, adiponectin and the L/A ratio in euthyroid subjects were documented in 67 fasting subjects with metabolic syndrome (Mets) and 86 euthyroid subjects without MetS (TSH and free T4 levels within the institutional reference range)...
January 11, 2017: Lipids in Health and Disease
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