No role for tri-iodothyronine (T3) testing in the assessment of levothyroxine (T4) over-replacement in hypothyroid patients.

This study investigated how informative T3 levels are in these patients. Our hypothesis is that T3 measurement would not add anything to the assessment of T4 over-replacement in primary hypothyroidism. Over a 15-week period, consecutive thyroid function test requests in patients on levothyroxine had T3 levels measured if thyroid-stimulating hormone (TSH) was below the reference range (RR;
Source: British Journal of Biomedical Science - Category: Laboratory Medicine Tags: Br J Biomed Sci Source Type: research

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Authors: Krassas GE, Markou KB Abstract The aim of this review is to provide relevant information regarding the impact of thyroid disease, starting from birth and mainly concerning hyperthyroidism and hypothyroidism, on reproduction. Hyperthyroidism occurs much less commonly in children than hypothyroidism, with Graves' disease (GD) being the most common cause of thyrotoxicosis in children. Children born with neonatal GD have no defects in the reproductive system that could be related to hyperthyroidism. Current treatment options include antithyroid drugs (ATD), surgery, and radioactive iodine (RAI). In males, norm...
Source: Hormones - Category: Endocrinology Tags: Hormones (Athens) Source Type: research
AbstractBackgroundThis systematic review was conducted to inform the Canadian Task Force on Preventive Health Care recommendations on screening for thyroid dysfunction (TD). The review sought to answer key questions on the benefits and harms of screening for TD, patients ’ values and preferences for screening, and the benefits and harms of treating screen-detected TD.MethodsThis review followed Canadian Task Force on Preventive Health Care methods, which include the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. The search strategy used for benefits and harms of screening and tre...
Source: Systematic Reviews - Category: International Medicine & Public Health Source Type: research
This article discusses the basic science and clinical data that support the hypothesis that these changes pose pathophysiologic and potential novel therapeutic challenges.
Source: Heart Failure Clinics - Category: Cardiology Authors: Source Type: research
Authors: Gabora K, Piciu A, Bădulescu IC, Larg MI, Stoian IA, Piciu D Abstract Tyrosine kinase inhibitors (TKI) are gaining more ground in oncology, they are widely used in the treatment of multiple types of cancers; still important side effects limit their efficacy. The aim of this study is to evaluate the existing medical literature on TKI induced thyroid dysfunction, to assess the adverse effects of targeted therapy on thyroid function in oncological patients and to evaluate the effects of thyroid dysfunction on disease prognosis. We included in this review 22 original studies published between 2010 and 2019. W...
Source: Drug Metabolism Reviews - Category: Drugs & Pharmacology Tags: Drug Metab Rev Source Type: research
AbstractPurposeTo comprehensively investigate the associations of subclinical thyroid dysfunction with BMD and fractures at various sites.MethodsComprehensive electronic and manual searches of databases were systematically conducted to identify prospective cohort studies from the inception of the databases to May 2019. The summary results for fractures and BMDs at various sites were calculated by relative risks (RRs) and weighted mean differences (WMDs) with corresponding 95% confidence intervals (CIs) using the random-effects model.ResultsSeventeen prospective cohorts from 24 studies were identified and 313,557 individual...
Source: Endocrine - Category: Endocrinology Source Type: research
ConclusionsNo apparent association was found between subclinical hypothyroidism or subclinical hyperthyroidism defined on single TSH measurement and BMD at the lumbar spine and femur in a large cohort of middle-aged men and women. Subclinical hypothyroidism was independently associated with a lower risk of osteoporosis in postmenopausal women.
Source: Osteoporosis International - Category: Orthopaedics Source Type: research
ConclusionsThe BR method does not increase the remission rates. It may be useful to combine L-T4 with a medium dose of methimazole when GD is difficult to manage with methimazole alone. It may represent a therapeutic option to postpone definitive treatments to a suitable age.
Source: Journal of Endocrinological Investigation - Category: Endocrinology Source Type: research
Conclusion For patients with Graves' disease, those with iatrogenic hypothyroidism and TSI > 2.5 times the basal level are at the highest risk for neonatal thyrotoxicosis. [...] Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals: Table of contents  |  Abstract  |  open access Full text
Source: American Journal of Perinatology Reports - Category: Perinatology & Neonatology Authors: Tags: Original Article Source Type: research
This study was conducted to evaluate the levels of trace metals Fe, Cr, Co, Cd, Cu, Ni, Hg, Zn, and Pb in healthy individuals and patients with thyroid disease (hyperthyroidism, hypothyroidism, and cancerous). The serum levels of 110 participants living in Birjand City, east of Iran, were collected and analyzed using ICP-MS (Agilent 7900). Results showed that the concentration levels of Cr, Co, Zn, Cd, and Pb were significantly higher at case-patients (p 0.05). In patients with high or low thyroid activity, strong mutual correlations between Cr, Ni, and Fe were noticeable (p
Source: Environmental Science and Pollution Research International - Category: Environmental Health Authors: Tags: Environ Sci Pollut Res Int Source Type: research
We report the case of a 52-year-old woman who was referred for primary hypothyroidism, who showed clinical signs of hyperthyroidism and had been under treatment with levothyroxine. Her exams revealed high levels of thyroid stimulating hormone (TSH), at odds with free thyroxin (FT4) and raised triiodothyronine (T3), which remained elevated after medication suspension, suggesting possible central hyperthyroidism. Sellar MRI showed normal pituitary gland, with a mass in the sphenoid sinus of 24 mm. A possible ectopic TSH secreting pituitary tumor of sphenoid sinus was hypothesized. After a single dose of a sustained-release p...
Source: Steroids - Category: Drugs & Pharmacology Source Type: research
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