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https://www.readbyqxmd.com/read/28333900/-the-influence-of-hypothyroidism-on-the-conversion-and-binding-of-thyroid-hormones-in-patients-with-end-stage-renal-disease
#1
Iwanna Dubczak, Longin Niemczyk, Zbigniew Bartoszewicz, Katarzyna Szamotulska, Marek Saracyn, Stanisław Niemczyk
Hypothyroidism in patients with renal failure (RF) causes many metabolic and clinical problems, and both these diseases can mutually exacerbate their disturbances. AIM: The aim of this study was to evaluate the effect of hypothyroidism, and end-stage renal disease (ESRD) on conversion of thyroid hormones (TH) in patients with ESRD treated with chronic hemodialysis (HD). MATERIALS AND METHODS: The study was performed in 74 patients, including 41 women (K) and 33 men (M) aged 28-83 y...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28327686/thyroid-hormone-profile-in-patients-with-chronic-kidney-disease-a-single-centre-study
#2
S Singh, A Verma, G Aryal, S Thapa, S Khakurel, K Shrestha
BACKGROUND: Chronic kidney disease (CKD) is a global burden and now recognized as a major public health problem worldwide. Patients with CKD have alteration in thyroid hormone metabolism. This study aims to evaluate the status of thyroid hormone profile in different stages of CKD. METHODS: The cross-sectional study included 103 CKD patients attending Nephrology and Dialysis unit of KIST Medical College Teaching Hospital, Lalitpur, Nepal. Serum creatinine, free triiodothyronine (fT3), free thyroxine (fT4), and thyroid stimulating hormone (TSH) were measured...
September 2016: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/28324063/dio2-thr92ala-reduces-deiodinase-2-activity-and-serum-t3-levels-in-thyroid-deficient-patients
#3
M G Castagna, M Dentice, S Cantara, R Ambrosio, F Maino, T Porcelli, C Marzocchi, C Garbi, F Pacini, D Salvatore
Context: A significant proportion of athyreotic LT4-treated patients experience hypothyroid-like symptoms. During LT4 replacement, levels of the active hormone triiodothyronine (T3) strictly depend on type-2-deiodinase (D2)-mediated activation of LT4. The Thr92Ala polymorphism and the 258 G/A in the DIO2 gene have been associated with various clinical conditions. Objectives: To investigate the effects of DIO2 polymorphisms in thyroid hormone homeostasis. Design: We compared the pre-surgical hormonal status of thyroidectomized LT4-treated patients who had a similar TSH level, to their post-surgery status, and analyzed their DIO2 genotype in a subgroup of 102/140 (72...
February 2, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28322754/evaluation-of-the-clsi-ep26-a-protocol-for-detection-of-reagent-lot-to-lot-differences
#4
Brooke M Katzman, Karl M Ness, Alicia Algeciras-Schimnich
BACKGROUND: Verification of new reagent lots is a required laboratory task. The Clinical and Laboratory Standards Institute (CLSI) EP26-A guideline provides a lot-to-lot verification protocol to detect significant changes in test performance. The aim of this study was to compare the performance of EP26-A with our laboratory reagent lot verification protocol. METHODS: Prospective evaluations for two reagent lots each for thyroid stimulating hormone (TSH), thyroglobulin (Tg), thyroxine (T4), triiodothyronine (T3), free triiodothyronine (fT3), and thyroid peroxidase antibody (TPOAb) were performed...
March 17, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28321241/free-triiodothyronine-in-relation-to-coronary-severity-at-different-ages-gensini-score-assessment-in-4206-euthyroid-patients
#5
Bing-Yang Zhou, Yuan-Lin Guo, Na-Qiong Wu, Cheng-Gang Zhu, Ying Gao, Ping Qing, Xiao-Lin Li, Yao Wang, Geng Liu, Qian Dong, Jian-Jun Li
OBJECTIVE: To study whether free triiodothyronine (FT3) within normal range has effects on the presence and severity of coronary artery disease (CAD) in different gender and age groups. METHODS: A total of 4206 euthyroid patients were consecutively enrolled and divided into CAD group (n = 3306) and non-CAD group (n = 900). All patients underwent coronary angiography (CAG). Gensini score (GS) was used to determine the severity of coronary artery stenosis. Severe CAD was defined as GS > 32 and mild CAD was defined as GS ≤ 32...
December 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28317625/relationship-among-pulmonary-hypertension-autoimmunity-thyroid-hormones-and-dyspnea-in-patients-with-hyperthyroidism
#6
Sayid Shafi Zuhur, Derya Baykiz, Sonat Pinar Kara, Ertan Sahin, Idris Kuzu, Gulsah Elbuken
OBJECTIVE: Previous studies have reported conflicting results regarding the mechanisms underlying the pathophysiology of pulmonary hypertension (PHT) in patients with hyperthyroidism. Therefore, in this study, we investigated the association between PHT and thyroid-stimulating hormone (TSH) receptor antibody, thyroid peroxidase antibody, thyroglobulin antibody, TSH, fT3, fT4 and dyspnea during daily activities in a large population of patients with hyperthyroidism. METHODS: A total of 129 consecutive patients with hyperthyroidism, 37 with hypothyroidism and 38 euthyroid controls were enrolled in this study...
April 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28315504/association-of-triiodothyronine-levels-with-left-ventricular-function-cardiovascular-events-and-mortality-in-hemodialysis-patients
#7
Jianjun Gao, Yongxing Xu, Deyang Kong, Lei Zhou, Huaping Jia, Boran Liang, Zhaoyan Gu
BACKGROUND: Hemodialysis (HD) patients have altered free triiodothyronine (fT3) levels. A low fT3 level is a strong and inverse mortality predictor in HD patients. However, little is known about the relationship between fT3 and left ventricular function in HD patients. METHODS: A total of 128 maintenance HD patients were enrolled in this study. A thyroid function test with blood sampling and echocardiography was conducted. Low-T3 syndrome was defined as fT3 level <3...
March 16, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28306523/evaluation-of-thyroid-test-utilization-through-analysis-of-population-level-data
#8
Jasmine Gill, Vilte E Barakauskas, Dylan Thomas, Karina Rodriguez-Capote, Trefor Higgins, Don Zhang, Amanda VanSpronsen, Oksana Babenko, Roberta Martindale, Mathew P Estey
BACKGROUND: Inappropriate laboratory test utilization can result in unnecessary patient testing and increased healthcare costs. While several thyroid function tests are available, thyroid-stimulating hormone (TSH) is recommended as the first-line test for investigating and monitoring thyroid dysfunction. We evaluate thyroid test utilization in Northern Alberta in terms of testing patterns, frequencies, and reflex cutpoints. METHODS: This retrospective study analyzed thyroid test requests from January to December 2014...
March 15, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28301073/thyroid-function-in-end-stage-renal-disease-and-effects-of-frequent-hemodialysis
#9
Joan C Lo, Gerald J Beck, George A Kaysen, Christopher T Chan, Alan S Kliger, Michael V Rocco, Minwei Li, Glenn M Chertow
INTRODUCTION: End-stage renal disease (ESRD) is associated with perturbations in thyroid hormone concentrations and an increased prevalence of hypothyroidism. Few studies have examined the effects of hemodialysis dose or frequency on endogenous thyroid function. METHODS: Within the Frequent Hemodialysis Network (FHN) trials, we examined the prevalence of hypothyroidism in patients with ESRD. Among those with endogenous thyroid function (without overt hyper/hypothyroidism or thyroid hormone supplementation), we examined the association of thyroid hormone concentration with multiple parameters of self-reported health status, and physical and cognitive performance, and the effects of hemodialysis frequency on serum thyroid stimulating hormone (TSH), free thyroxine (FT4), and free tri-iodothyronine (FT3) levels...
March 16, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28295871/promoting-resource-stewardship-reducing-inappropriate-free-thyroid-hormone-testing
#10
Julie A Gilmour, Alanna Weisman, Steven Orlov, Robert J Goldberg, Alyse Goldberg, Hayley Baranek, Geetha Mukerji
RATIONALE: Free thyroxine (fT4) and free triiodothyronine (fT3) tests are often ordered when not clinically warranted. Preventing laboratory overuse by reducing inappropriate fT4 and fT3 testing is one strategy to promote resource stewardship. OBJECTIVES: (1) To characterize the frequency of inappropriate fT4 and fT3 testing and (2) to implement a quality improvement strategy aimed at reducing the number of these tests performed. METHODS: Quality improvement tools were used to create sequential change ideas: (1) education of physicians regarding appropriate indications for ordering fT4/fT3 and (2) implementation of a hospital-wide laboratory and forced-function system with a reflex fT4...
March 14, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28293260/treatment-with-myo-inositol-and-selenium-ensures-euthyroidism-in-patients-with-autoimmune-thyroiditis
#11
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/28292350/association-between-free-triiodothyronine-levels-and-peripheral-arterial-disease-in-euthyroid-participants
#12
Po Wang, Rui DU, Lin Lin, Lin Ding, Kui Peng, Yu Xu, Min Xu, Yu Fang Bi, Wei Qing Wang, Guang Ning, Jie Li Lu
This current cross-sectional study investigates the relationship between thyroid hormones and peripheral artery disease (PAD) among euthyroid Chinese population aged 40 years and above. Serum free triiodothyronine (FT3), free thyroxin (FT4), thyroid-stimulating hormone (TSH), and thyroid antibodies were measured. PAD was defined as ankle-brachial index (ABI) < 0.9. There were 91 (2.9%) PAD cases among the 3,148 euthyroid study participants. Participants in the highest quartile of FT3 and free-triiodothyronine-to-free-thyroxin (FT3/FT4 ratio) had a decreased risk of prevalent PAD (multivariate-adjusted odds ratio, 95% confidence interval: 0...
February 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28287839/echocardiographic-evaluation-of-left-ventricular-diastolic-dysfunction-in-subclinical-hypothyroidism-a-case-control-study
#13
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/28287838/renal-function-improves-with-the-treatment-of-hypothyroidism
#14
Oktay Bulur, Kursat Dal, Derun Taner Ertugrul, Murat Eser, Fatma Kaplan Efe, Serdar Karakaya, Kubilay Şahin, Salih Baser, Naim Ata, Aysun Aybal Kutlugun, Esin Beyan
BACKGROUND: It has been known that thyroid hormones may affect renal function. In this study, we aimed to investigate the effect of levothyroxine replacement on renal function in hypothyroid patients before and after treatment. METHODS: We retrospectively investigated free T3 (fT3), free T4 (fT4), TSH, creatinine, and eGFR measurements during both hypothyroid and euthyroid states of hypothyroid patients. The eGFR was calculated using the simplified Modification of Diet in Renal Disease formula...
March 13, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28276714/diagnostic-significance-of-serum-concentrations-of-soluble-fas-ligand-sfasl-in-children-with-autoimmune-thyroid-disease
#15
Hanna Mikos, Marcin Mikos, Marek Niedziela
INTRODUCTION: The aim of the study was to assess serum levels of sFasL as a marker of thyroid dysfunction in children with autoimmune thyroid disease (AITD). DESIGN: The group comprised 45 newly diagnosed children with Hashimoto's thyroiditis and Graves' disease versus euthyroid control group: 11 with hypothyroidism (10 girls and 1 boy, aged 12.2 ± 1.9 years), 19 children with hyperthyroidism (15 girls and 4 boys, aged 12.4 ± 4.9 years) and 15 healthy subjects (7 girls and 8 boys, aged 10...
February 21, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28255980/thyroid-dysfunction-in-obese-and-overweight-children
#16
Ewelina Witkowska-Sędek, Anna Kucharska, Małgorzata Rumińska, Beata Pyrżak
Obesity and thyroid function are closely related. Thyroid hormones are involved in the regulation of metabolism, thermogenesis, food intake, and fat oxidation. In obese children the most frequent hormonal abnormalities are slight hyperthyrotropinaemia and moderate increases in total T3 and/or fT3 concentrations. Those abnormalities are usually considered a cause of obesity, but according to recent studies, they should actually be considered an adaptation process aimed at increasing resting energy expenditure and total energy expenditure...
2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28246105/insulin-resistance-and-normal-thyroid-hormone-levels-prospective-study-and-metabolomic-analysis
#17
Ele Ferrannini, Giorgio Iervasi, Jeff Cobb, Rudina Ndreu, Monica Nannipieri
While hyper/hypothyroidism causes dysglycemia, the relationship between thyroid hormone levels within the normal range and insulin resistance (IR) is unclear. In 940 participants with strictly normal serum concentrations of free triiodothyronine (fT3), free thyroxine (fT4), and thyroid-stimulating hormone (TSH)) followed up for 3 years, we measured insulin sensitivity (by the insulin clamp technique) and a panel of 35 circulating metabolites. At baseline, across quartiles of increasing fT3 levels (or fT3/fT4 ratio) there emerged most features of IR (male sex, higher BMI, waist circumference, heart rate, blood pressure, fatty liver index, free fatty acids, and triglycerides levels, reduced insulin-mediated glucose disposal and ß-cell glucose sensitivity)...
February 28, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28240719/thyroid-hormone-level-is-associated-with-the-frequency-and-severity-of-acute-transverse-myelitis
#18
Yiyun Weng, Huiyue Lin, Xiaoxian Ye, Dewei Xie, Zhibo Chen, Juzeng Zheng, Zhongqian Su, Hongli Xie, Xu Zhang, Xiang Li
Acute transverse myelitis (ATM) is a progressive and autoimmune disease with inflammatory cell infiltrates into the spinal cord, and thyroid hormone (TH) level is associated with the oxidative and antioxidant status. Variations in oxidative stress and antioxidant levels are related to the pathogenesis of autoimmune and inflammatory diseases. Our study aimed to investigate the possible correlation between ATM and TH levels of thyroid-stimulating hormone (TSH), free thyroxine (FT4), free triiodothyronine (FT3), and FT4/FT3...
March 22, 2017: Neuroreport
https://www.readbyqxmd.com/read/28240244/perfluorinated-alkyl-substances-in-serum-of-the-southern-chinese-general-population-and-potential-impact-on-thyroid-hormones
#19
Yangjie Li, Yating Cheng, Zhiyong Xie, Feng Zeng
In this study, eight perfluorinated alkyl substances (PFASs) and five thyroid hormones (TSH, FT4, FT3, TGAb, and TMAb) were determined in 202 human serum samples of the general population of Guangdong, Guangxi and Hainan provinces in southern China. Σ8PFASs concentrations ranged from 0.85 to 24.3 ng/mL with a mean value of 4.66 ng/mL. The PFASs composition profiles of human serum samples nearly make no difference at different locations. A significant increase was observed for ∑8PFASs, PFOS, and PFHxS concentrations with age (p < 0...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28228654/low-ft3-a-possible-marker-of-frailty-in-the-elderly
#20
Aldo Bertoli, Alessia Valentini, Maria Assunta Cianfarani, Elena Gasbarra, Umberto Tarantino, Massimo Federici
INTRODUCTION: Frailty is associated with a functional decline of multiple physiological systems, of which they may be a cause or consequence. The objective of the study was to evaluate the prevalence of thyroid hormone modifications in elderly frail subjects and its relationship with frailty. STUDY POPULATION AND METHODS: An observational study was carried out at the University Hospital "Tor Vergata" in Rome among ambulatory and hospitalized patients. The study population consisted of 112 elderly subjects: 62 were hospitalized following hip fracture and 50 control subjects were outpatients...
2017: Clinical Interventions in Aging
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