keyword
MENU ▼
Read by QxMD icon Read
search

l thyroxine

keyword
https://www.readbyqxmd.com/read/28329380/subclinical-thyroid-dysfunction-and-cardiovascular-diseases-2016-update
#1
Carmen Floriani, Baris Gencer, Tinh-Hai Collet, Nicolas Rodondi
Subclinical thyroid dysfunction comprises subclinical hypothyroidism (SHypo), defined as elevated thyroid-stimulating hormone (TSH) by normal free thyroxine (FT4), and subclinical hyperthyroidism (SHyper) with decreased or undetectable TSH and normal FT4. Up to 10% of the elderly have SHypo, which is usually asymptomatic. Individual participant data (IPD) analyses of prospective cohort studies from the international Thyroid Studies Collaboration show that SHypo is associated with increased coronary heart disease (CHD) mortality [hazard ratio (HR) 1,58 for TSH ≥ 10 mIU/L, 95% CI 1...
February 27, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28324012/deletion-of-the-thyroid-hormone-activating-type-2-deiodinase-rescues-cone-photoreceptor-degeneration-but-not-deafness-in-mice-lacking-type-3-deiodinase
#2
Lily Ng, Hong Liu, Donald L St Germain, Arturo Hernandez, Douglas Forrest
Type 2 deiodinase amplifies and type 3 deiodinase depletes levels of the active form of thyroid hormone, triiodothyronine (T3). Given the opposing activities of these enzymes, we tested the hypothesis that they counteract each other's developmental functions by investigating whether deletion of type 2 deiodinase (encoded by Dio2) modifies sensory phenotypes in type 3 deiodinase-deficient (Dio3-/-) mice. Dio3-/- mice display degeneration of retinal cones, the photoreceptors that mediate daylight and color vision...
March 7, 2017: Endocrinology
https://www.readbyqxmd.com/read/28322991/thyroid-hormone-induce-a-p53-dependent-dna-damage-through-pi3k-akt-activation-in-sperm
#3
Hong Xian, Fang Wang, Wending Teng, Dong Yang, Ming Zhang
Accumulating evidences showed that thyroid hormone was participated in the functioning of the reproductive system, and an elevated level of thyroid hormones had a negative impact on reproductive system. However, the molecular basis for this observation still remains to be fully understood. Here, we show that l-Thyroxine significantly impaired human sperm motility. The molecular basis showed that thyroxine receptor stimulation triggers Phosphatidyl Inositol 3-kinase (PI3K)/Akt signaling activation leading to the E3 ligase MDM2 phosphorylation at serine 166, which directly interacted with p53 for degradation...
March 16, 2017: Gene
https://www.readbyqxmd.com/read/28322267/exposure-of-pregnant-mice-to-triclosan-impairs-placental-development-and-nutrient-transport
#4
Xinyuan Cao, Xu Hua, Xiaoli Wang, Ling Chen
Triclosan (TCS) is associated with spontaneous abortions and fetal growth restriction. Here, we showed that when pregnant mice were treated with 8 mg/kg TCS (8-TCS mice) on gestational days (GD) 6-18 fetal body weights were lower than controls. Placental weights and volumes were reduced in 8-TCS mice. The placental proliferative cells and expression of PCNA and Cyclin D3 on GD13 were remarkably decreased in 8-TCS mice. The decreases in activities and expression of placental System A amino acid or glucose transporters on GD14 and GD17 were observed in 8-TCS mice...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315587/the-effect-of-l-thyroxine-treatment-on-sexual-function-and-depressive-symptoms-in-men-with-autoimmune-hypothyroidism
#5
Robert Krysiak, Witold Szkróbka, Bogusław Okopień
BACKGROUND: Thyroid autoimmunity and mild hypothyroidism in women seem to be associated with sexual dysfunction and depressive symptoms. Data concerning similar associations in men are limited. The aim of this study was to investigate sexual functioning and depressive symptoms in men with autoimmune hypothyroidism. METHODS: The study population consisted of three groups: men with autoimmune overt hypothyroidism (group A), men with autoimmune subclinical hypothyroidism (group B) and healthy euthyroid males without thyroid autoimmunity (group C)...
January 17, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28293260/treatment-with-myo-inositol-and-selenium-ensures-euthyroidism-in-patients-with-autoimmune-thyroiditis
#6
Maurizio Nordio, Sabrina Basciani
Clinical evidences have highlighted the efficacy of myo-inositol and selenium in the treatment of autoimmune thyroiditis. Aim of this study was to further analyze the role of myo-inositol plus selenium (Myo-Ins-Se) in restoring a normal thyroid function of Hashimoto's patients with subclinical hypothyroidism. Eighty-six patients with Hashimoto's thyroiditis having thyroid-stimulating hormone (TSH) levels between 3 and 6 mIU/L, elevated serum antithyroid peroxidase (TPOAb) and/or antithyroglobulin (TgAb), and normal free thyroxine (fT4) and free triiodothyronine (fT3) levels were enrolled in the study: one hyperthyroid subject with TSH about 0...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28293050/cerebral-ischemia-reperfusion-injury-in-the-hyperthyroid-rat
#7
Somaye Keshavarz, Gholam Abbas Dehghani
BACKGROUND: Hyperthyroidism as a risk factor for stroke is not conclusive. There are no definite data on the relationship between ischemic cerebrovascular injury and hyperthyroidism. This study was designed to define whether the outcomes of post-ischemic stroke injury are influenced by chronic hyperthyroidism. METHODS: Two groups of hyperthyroid (HT) and control euthyroid rats of equal numbers (n=22) were included in the study. Hyperthyroidism was induced for 4 weeks by adding L-thyroxine (300 μg/kg) to drinking water...
January 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28291505/the-high-prevalence-of-reversible-subclinical-hypothyroidism-with-elevated-serum-thyroglobulin-levels-in-chronic-kidney-disease-patients%C3%A2
#8
Toru Sanai, Ken Okamura, Shuichi Rikitake, Makoto Fukuda, Koji Onozawa, Mai Sanematsu, Tsuyoshi Takashima, Motoaki Miyazono, Yuji Ikeda
BACKGROUND: We examined the thyroid function of non-dialysis-dependent chronic kidney disease (CKD) patients in Japan. METHODS: Serum-free thyroxine, free triiodothyronine, thyroid-stimulating hormone (TSH), and thyroglobulin (Tg) levels were evaluated in 37 CKD patients. CKD was defined as sustained kidney damage for more than 3 months and was classified as CKD 1+2 (n = 11), 3+4 (n = 10), or 5 (n = 16), which were defined by glomerular filtration rates of ≥ 60, 15 - 59, or < 15 mL/min/1...
March 14, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28287839/echocardiographic-evaluation-of-left-ventricular-diastolic-dysfunction-in-subclinical-hypothyroidism-a-case-control-study
#9
Yuthika Malhotra, Rajeev Mohan Kaushik, Reshma Kaushik
PURPOSE: To study the prevalence of left ventricular diastolic dysfunction (LVDD) in patients with subclinical hypothyroidism (SCH) and the response of LVDD to L-thyroxine therapy. MATERIALS AND METHODS: This cross-sectional case-control study with one longitudinal arm included 67 patients with SCH attending a tertiary care hospital in Uttarakhand, India, and 67 age- and sex-matched healthy controls. LVDD was assessed by 2D, pulsed-wave Doppler (PWD), continuous wave Doppler (CWD), and tissue Doppler echocardiography (TDE)...
March 13, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28286688/beneficial-effects-on-pregnancy-outcomes-of-thyroid-hormone-replacement-for-subclinical-hypothyroidism
#10
Norman J Blumenthal, Creswell J Eastman
Background. Hypothyroidism and raised thyroid antibody levels have been associated with adverse obstetrical outcomes. Several studies have investigated causal associations, but results have been inconsistent and few studies have reported the effects of thyroxine replacement therapy on pregnancy outcomes in hypothyroid patients. Objective. The primary study objective was to determine the outcome of pregnancies in women diagnosed with overt and subclinical hypothyroidism (SCH) (serum TSH > 2.5 mIU/L) and those with elevated circulating thyroid autoantibody levels in the first trimester of pregnancy and after the institution of appropriate thyroxine replacement therapy to maintain the serum TSH ≤ 2...
2017: Journal of Thyroid Research
https://www.readbyqxmd.com/read/28285430/the-sensitivity-and-specificity-of-thyroglobulin-concentration-using-repeated-measures-of-urinary-iodine%C3%A2-excretion
#11
Zheng F Ma, Bernard J Venn, Patrick J Manning, Claire M Cameron, Sheila A Skeaff
PURPOSE: Iodine deficiency affects 30% of populations worldwide. The amount of thyroglobulin (Tg) in blood increases in iodine deficiency and also in iodine excess. Tg is considered as a sensitive index of iodine status in groups of children and adults, but its usefulness for individuals is unknown. The aim of this study was to determine the diagnostic performance of Tg as an index of iodine status in individual adults. METHODS: Adults aged 18-40 years (n = 151) provided five spot urine samples for the measurement of urinary iodine concentration expressed as μg/L (UIC), μg/g of creatinine (I:Cre), and μg/day (estimated UIE); the mean of the five samples was used as the reference standard...
March 11, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28283939/high-dose-of-radioactive-iodine-per-se-has-no-effect-on-glucose-metabolism-in-thyroidectomized-rats
#12
Roghaieh Samadi, Mahboubeh Ghanbari, Babak Shafiei, Sevda Gheibi, Fereidoun Azizi, Asghar Ghasemi
PURPOSE: Thyroid concentrates radioactive iodine by sodium-iodide symporter; this is used for treating hyperthyroidism and thyroid cancer. Pancreas expresses NIS and radioactive iodine uptake may damage pancreatic beta-cells and predispose patients to type 2 diabetes. The aim of this study was to determine whether radioactive iodine is associated with glucose metabolism in thyroidectomized rats. METHODS: Forty male Wistar rats were divided into four groups (n = 10/each); control, thyroidectomized, thyroidectomized-treated with 131-I (TX+I), and thyroidectomized-treated with 131-I and L-thyroxine (TX+I+T4)...
March 10, 2017: Endocrine
https://www.readbyqxmd.com/read/28276175/population-level-incidence-and-monitoring-of-adverse-drug-reactions-with-long-term-amiodarone-therapy
#13
S Rankin, D H Elder, S Ogston, J George, C C Lang, A M Choy
INTRODUCTION: Amiodarone is associated with significant long-lasting adverse drug reactions (ADRs). Guidelines recommend laboratory monitoring during long-term use. However, data of compliance with laboratory monitoring is lacking. AIMS: The aim of this study was to assess laboratory monitoring of liver and thyroid function during amiodarone prescribing from 1989-2011 in the Tayside, UK, population (approximately 400,000) in relation to National guidelines recommending laboratory monitoring every 6 months...
March 9, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28274595/interdependence-of-thyroglobulin-processing-and-thyroid-hormone-export-in-the-mouse-thyroid-gland
#14
Jonas Weber, Joseph McInnes, Cise Kizilirmak, Maren Rehders, Maria Qatato, Eva K Wirth, Ulrich Schweizer, Francois Verrey, Heike Heuer, Klaudia Brix
Thyroid hormone (TH) target cells need to adopt mechanisms to maintain sufficient levels of TH to ensure regular functions. This includes thyroid epithelial cells, which generate TH in addition to being TH-responsive. However, the cellular and molecular pathways underlying thyroid auto-regulation are insufficiently understood. In order to investigate whether thyroglobulin processing and TH export are sensed by thyrocytes, we inactivated thyroglobulin-processing cathepsins and TH-exporting monocarboxylate transporters (Mct) in the mouse...
March 5, 2017: European Journal of Cell Biology
https://www.readbyqxmd.com/read/28272855/a-fifteen-year-experience-of-total-thyroidectomy-for-the-management-of-simple-multinodular-goitres-in-a-low-medium-income-country
#15
A O Afolabi, O O Ayandipo, O O Afuwape, O A Ogundoyin
INTRODUCTION: Total thyroidectomy as a treatment for simple multinodular goitre is not well recognised in most centres in low middle income countries. METHOD: This paper is a retrospective review of outcomes of total thyroidectomy for simple multinodular goitres in the last fifteen years in a tertiary hospital in Nigeria. RESULTS: A total of 652 thyroidectomies were done from January 2001 to December 2015. Simple multinodular goitres were indication for a total thyroidectomy in 447 patients (68...
November 2016: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28263825/evaluation-of-the-risk-of-perchlorate-exposure-in-a-population-of-late-gestation-pregnant-women-in-the-united-states-application-of-probabilistic-biologically-based-dose-response-modeling
#16
A Lumen, N I George
The risk of ubiquitous perchlorate exposure and the dose-response on thyroid hormone levels in pregnant women in the United States (U.S.) have yet to be characterized. In the current work, we integrated a previously developed perchlorate submodel into a recently developed population-based pregnancy model to predict reductions in maternal serum free thyroxine (fT4) levels for late-gestation pregnant women in the U.S. Our findings indicated no significant difference in geometric mean estimates of fT4 when perchlorate exposure from food only was compared to no perchlorate exposure...
March 2, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28260206/follicle-stimulating-hormone-its-novel-association-with-sex-hormone-binding-globulin-in-men-and-postmenopausal-women
#17
Ningjian Wang, Kun Zhang, Bing Han, Qin Li, Yi Chen, Chunfang Zhu, Yingchao Chen, Fangzhen Xia, Hualing Zhai, Boren Jiang, Zhoujun Shen, Yingli Lu
PURPOSE: Follicle stimulating hormone plays direct roles in a variety of nongonadal tissues and sex hormone binding globulin is becoming the convergence of the crosstalk among metabolic diseases. However, no studies have explored the association between follicle stimulating hormone and sex hormone binding globulin. We aimed to study this association among men and women. METHODS: SPECT-China is a population-based study conducted since 2014. This study included 4206 men and 2842 postmenopausal women...
March 4, 2017: Endocrine
https://www.readbyqxmd.com/read/28254723/semicarbazide-induced-thyroid-disruption-in-japanese-flounder-paralichthys-olivaceus-and-its-potential-mechanisms
#18
Zonghao Yue, Miao Yu, Xiaona Zhang, Yifei Dong, Hua Tian, Wei Wang, Shaoguo Ru
Semicarbazide (SMC) is a carcinogenic and genotoxic substance that has been found in aquatic systems. SMC may also cause thyroid follicular epithelial cell injury in rats, but the thyroid-disrupting properties of SMC and its potential mechanisms remain unclear. In this study, we exposed fertilized eggs of Japanese flounder (Paralichthys olivaceus) to 1, 10, 100, and 1000μg/L SMC for 55 d to assess the impact of SMC exposure on the thyroid system. The number of larvae in each metamorphic stage was counted, the concentrations of whole-body thyroid hormones (THs) 3,5,3'-triiodothyronine (T3) and thyroxine (T4) were measured, and the transcription levels of genes involved in the hypothalamic-pituitary-thyroid (HPT) axis and gamma-aminobutyric acid (GABA) synthesis were quantified...
February 27, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28249913/alteration-of-hemostatic-parameters-in-patients-with-different-levels-of-subclinical-hypothyroidism-and-the-effect-of-l-thyroxine-treatment
#19
Fang Gao, Guangya Wang, Jinxiu Xu
Subclinical hypothyroidism (SH) is associated with hypercoagulability and hypofibrinolysis. The objective of this study was to assess the effect of L-thyroxine (L-T4) treatment and to evaluate changes in the hemostatic abnormalities of patients with varying severities of SH. We measured tissue plasminogen activator (t-PA), plasminogen activator inhibitor-1 (PAI-1), D-dimer (DDI), fibrinogen (FIB), platelet counts (PLT), mean platelet volume (MPV), platelet distribution width (PDW), activated partial thromboplastin time (APTT), and prothrombin time (PT) in 149 female subjects...
January 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28242306/characteristics-of-the-brown-hagfish-paramyxine-atami-transthyretin-metal-ion-dependent-thyroid-hormone-binding
#20
Shunsuke Suzuki, Kentaro Kasai, Norihito Nishiyama, Akinori Ishihara, Kiyoshi Yamauchi
Transthyretin (TTR) is a vertebrate-specific protein involved in thyroid hormone distribution in plasma, and its gene is thought to have emerged by gene duplication from the gene for the ancient TTR-related protein, 5-hydroxyisourate hydrolase, at some early stage of chordate evolution. We investigated the molecular and hormone-binding properties of the brown hagfish Paramyxine atami TTR. The amino acid sequence deduced from the cloned hagfish TTR cDNA shared 33-50% identities with those of other vertebrate TTRs but less than 24% identities with those of vertebrate and deuterostome invertebrate 5-hydroxyisourate hydrolases...
February 24, 2017: General and Comparative Endocrinology
keyword
keyword
96745
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"