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Thyroid hormone replacement

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https://www.readbyqxmd.com/read/28976876/parathyroidectomy-in-hyperparathyroidism-associated-calciphylaxis-in-end-stage-renal-disease-should-be-prompt-and-radical-a-case-report-with-two-original-therapeutic-modifications-and-successful-outcome
#1
Sylvie Dusilová Sulková, Jiří Horáček, Eva Vykoukalová, Roman Šafránek, Alena Malá, Vladimír Palička
We present a case of severe calciphylaxis in both thighs and calves in a patient with end-stage renal disease and advanced secondary hyperparathyroidism with successful outcome after modified therapeutic approach. The cause of calciphylaxis is multifactorial. In our case, not only severe hyperparathyroidism and mediocalcinosis, but also medication (warfarin, calcium and active vitamin D) was involved. Because the initial conservative therapy was not successful, we indicated parathyroidectomy. However, we were not able to localize parathyroid glands and we contraindicated bilateral neck exploration due to the patient's critical status...
2017: Acta Medica (Hradec Králové)
https://www.readbyqxmd.com/read/28973666/exposure-of-pregnant-mice-to-triclosan-causes-insulin-resistance-via-thyroxine-reduction
#2
Xu Hua, Xin-Yuan Cao, Xiao-Li Wang, Peng Sun, Ling Chen
Exposure to triclosan (TCS), an antibacterial agent, during pregnancy is associated with hypothyroxinemia and decreases in placental glucose transporter expression and activity. The objective of this study was to investigate the influence of TCS on glucose homeostasis and insulin sensitivity in gestational mice (G-mice) and nongestational female mice (Ng-mice) as a control. Herein, we show that the exposure of G-mice to TCS (8 mg/kg) from gestational day (GD) 5 to GD17 significantly increased their levels of fasting plasma glucose and serum insulin, and insulin content in pancreatic β-cells with reduced HOMA-β index and increased HOMA-IR index...
August 14, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28964732/effects-of-thyroid-hormone-manipulation-on-pre-nuptial-molt-luteinizing-hormone-and-testicular-growth-in-male-white-crowned-sparrows-zonotrichia-leuchophrys-gambelii
#3
Jonathan H Pérez, Simone L Meddle, John C Wingfield, Marilyn Ramenofsky
Most seasonal species rely on the annual change in day length as the primary cue to appropriately time major spring events such as pre-nuptial molt and breeding. Thyroid hormones are thought to be involved in the regulation of both of these spring life history stages. Here we investigated the effects of chemical inhibition of thyroid hormone production using methimazole, subsequently coupled with either triiodothyronine (T3) or thyroxine (T4) replacement, on the photostimulation of pre-nuptial molt and breeding in Gambel's white-crowned sparrows (Zonotrichia leuchophrys gambelii)...
September 28, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28964662/replacement-therapy-with-levothyroxine-modulates-platelet-activation-in-recent-onset-post-thyroidectomy-subclinical-hypothyroidism
#4
G Desideri, R Bocale, A D'Amore, S Necozione, M Boscherini, G Carnassale, A Barini, A Barini, R Bellantone, C P Lombardi
BACKGROUND AND AIM: Subclinical hypothyroidism has been linked to increased risk of atherosclerotic disease. Soluble CD40 ligand (sCD40L), mainly derived from activated platelets, and the lipid peroxidation product 8-iso-prostaglandin F2α (8-iso-PGF2α) are known to play a relevant pathophysiological role in atherogenesis. In this study, we analyzed the relationship between thyroid hormones and circulating levels of sCD40L and 8-iso-PGF2α in patient with recent-onset post-thyroidectomy subclinical hypothyroidism under replacement therapy...
October 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28958565/association-between-thyroid-function-and-lipid-profiles-apolipoproteins-and-high-density-lipoprotein-function
#5
Kyong Yeun Jung, Hwa Young Ahn, Sun Kyoung Han, Young Joo Park, Bo Youn Cho, Min Kyong Moon
BACKGROUND: Thyroid hormone regulates lipid metabolism. In particular, it has been reported to regulate plasma high-density lipoprotein cholesterol (HDL-C) levels and the activity of molecules involved in HDL metabolism. OBJECTIVE: We investigated changes in the concentrations of lipids and apolipoproteins and in the function of HDL according to acute dynamic changes in thyroid function. METHODS: Concentrations of plasma lipids and apolipoproteins, paraoxonase-1 activity, and cholesterol efflux were measured in 27 patients with differentiated thyroid carcinoma who underwent total thyroidectomy and radioactive iodine (RAI) treatment, at 3 distinct times: After surgery (baseline subclinical hyperthyroid state), on the day of undergoing RAI treatment (overt hypothyroid state), and 3 months post-RAI treatment (subclinical hyperthyroid state)...
September 4, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28955301/out-of-reference-range-thyroid-stimulating-hormone-levels-in-levothyroxine-treated-primary-hypothyroid-patients-a-multicenter-observational-study
#6
Dilek Gogas Yavuz, Dilek Yazıcı, Lezzan Keskin, Ayşegül Atmaca, Seda Sancak, Fulden Saraç, İbrahim Şahin, Oğuz Dikbaş, Zeliha Hekimsoy, Serap Yalın, Melin Uygur, Murat Yılmaz, Sibel Yirmibeşcik, Özlem Asmaz
OBJECTIVE: Although levothyroxine (LT4) replacement therapy for hypothyroidism has been established as safe, inexpensive and effective, many studies from different countries reported out-of-reference range thyroid-stimulating hormone (TSH) values for the hypothyroid patients under LT4 treatment. The aim of this study was to determine TSH levels of primary hypothyroid patients under LT4 treatment and to assess self-reported compliance with daily LT4 intake in tertiary care centers in Turkey...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28948816/the-influence-of-smoking-and-cessation-on-the-human-reproductive-hormonal-balance
#7
H Jandíková, M Dušková, L Stárka
Smoking is the most widespread substance dependence in the world. Nicotine and some other components of the cigarette smoke cause various endocrine imbalances, and have negative effects on pituitary, thyroid, adrenal, testicular and ovarian functions. Here, we examined studies that describe the influence of smoking and smoking cessation on the male and female reproductive systems. We also focused on studies providing an account of differences in cessation success rates between men and women. In men, the most common effects associated with smoking are erectile dysfunction and decreasing spermiogram quality...
September 26, 2017: Physiological Research
https://www.readbyqxmd.com/read/28938886/congenital-hypothyroidism-due-to-ectopic-sublingual-thyroid-gland-in-prader-willi-syndrome-a-case-report
#8
Sarah Bocchini, Danilo Fintini, Graziano Grugni, Arianna Boiani, Alessio Convertino, Antonino Crinò
BACKGROUND: Thyroid gland disorders are variably associated with Prader-Willi syndrome (PWS). Many of the clinical features in newborns with PWS are similar to those found in congenital hypothyroidism (CH). CASE PRESENTATION: We report a case of a girl with CH and PWS. At the age of 9 months CH caused by an ectopic sublingual thyroid was diagnosed, and hormone replacement therapy was started. In spite of this treatment a decrease in growth velocity, weight excess and delayed development were observed...
September 22, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/28913489/cerebral-salt-wasting-syndrome-in-patients-with-minor-head-trauma-two-case-reports
#9
Gabriela Csipak, Natalia Hagau
We describe two polytrauma patients without severe head trauma who developed Cerebral Salt Wasting Syndrome (CSWS) during their stay in our ICU with natriuresis, hyponatremia and hypovolemia. Hyponatremia encountered in CSWS and the syndrome of inadequate antidiuretic hormone secretion (SIADH) is a common electrolyte finding in patients with severe head trauma, subarachnoid hemorrhage, malignancy and infections of the central nervous system. CSWS was an unexpected electrolyte finding in our patients with minor head trauma without neurological or neurosurgical problems...
October 2016: Rom J Anaesth Intensive Care
https://www.readbyqxmd.com/read/28901600/ethical-issues-raised-by-thyroid-cancer-overdiagnosis-a-matter-for-public-health
#10
Wendy A Rogers, Wendy L Craig, Vikki A Entwistle
Current practices of identifying and treating small indolent thyroid cancers constitute an important but in some ways unusual form of overdiagnosis. Overdiagnosis refers to diagnoses that generally harm rather than benefit patients, primarily because the diagnosed condition is not a harmful form of disease. Patients who are overdiagnosed with thyroid cancer are harmed by the psycho-social impact of a cancer diagnosis, as well as treatment interventions such partial or total thyroidectomy, lifelong thyroid replacement hormone, monitoring, surgical complications and other side effects...
October 2017: Bioethics
https://www.readbyqxmd.com/read/28863787/venous-thromboembolism-and-hyperhomocysteinemia-as-first-manifestation-of-pernicious-anemia-a-case-series
#11
W Ammouri, Z Mezalek Tazi, H Harmouche, M Maamar, M Adnaoui
BACKGROUND: Hyperhomocysteinemia has been suspected of favoring thrombosis. Several case-control studies and even a meta-analysis have confirmed a link between venous thrombosis and hyperhomocysteinemia. Homocysteine is due to genetic and acquired factors (poor diet in folate and vitamin B12, older age, renal impairment, thyroid diseases, and malignancies) induced by the intake and the concentrations of vitamin B9 or B12 in the majority of cases. CASES PRESENTATION: We report the cases of four Moroccan patients who presented with acute vein thrombosis of different sites: a 34-year-old man, a 60-year-old man, a 58-year-old man, and a 47-year-old woman...
September 2, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28855267/therapy-of-endocrine-disease-t4-t3-combination-therapy-is-there-a-true-effect
#12
Wilmar M Wiersinga
5-10% of hypothyroid patients on T4 replacement have persistent symptoms, despite normal TSH levels. T4+T3 combination therapy provided no better outcomes according to a meta-analysis of 11 randomized clinical trials comparing T4 monotherapy with T4+T3 combination therapy. This review evaluates recent developments in the field of T4+T3 therapy . T4 monotherapy is associated with higher serum FT4 and lower serum FT3 and FT3/FT4 ratio's than in healthy subjects. T4+T3 combination therapy may mimic more closely thyroid function tests of healthy subjects, but it has not been demonstrated that relatively low serum FT3 or FT3/FT4 ratio's are linked to persistent symptoms...
August 30, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28853052/thyroid-diseases-and-bone-health
#13
REVIEW
G R Williams, J H D Bassett
Thyroid hormones are essential for skeletal development and are important regulators of bone maintenance in adults. Childhood hypothyroidism causes delayed skeletal development, retarded linear growth and impaired bone mineral accrual. Epiphyseal dysgenesis is evidenced by classic features of stippled epiphyses on X-ray. In severe cases, post-natal growth arrest results in a complex skeletal dysplasia. Thyroid hormone replacement stimulates catch-up growth and bone maturation, but recovery may be incomplete dependent on the duration and severity of hypothyroidism prior to treatment...
August 29, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28835974/-hypercalcemic-crisis-and-hypocalcemic-tetany
#14
REVIEW
C Kasperk
A serum calcium level >3.5 mmol/l together with clinical symptoms such as muscle weakness, fatigue, nausea, vomiting, pancreatitis or even coma are characteristic for a hypercalcemic crisis (HC). Primary hyperparathyroidism (1HPT) and malignancy-associated hypercalcemia are the most frequent causal diseases for a HC. The analysis of serum levels for calcium, phosphorous, intact parathyroid hormone, electrophoresis and renal function parameters indicate which further radiological, scintigraphic or serum diagnostic steps are adequate to identify the cause of the patient's acute situation (i...
August 23, 2017: Der Internist
https://www.readbyqxmd.com/read/28835757/avoiding-misdiagnosis-due-to-antibody-interference-with-serum-free-thyroxin
#15
Pilar I Beato-Víbora, S Alejo-González
INTRODUCTION: Interfering antibodies are capable of causing potentially misleading results in automated thyroid hormone immunoassays. CASE PRESENTATION: We report the case of a 46- year-old female patient with autoimmune hypothyroidism in chronic replacement treatment with levothyroxine who was presented 8 years after diagnosis with a thyroid function test showing an increased level of TSH and a very high level of FT4. Interference in the laboratory serum free thyroxin (FT4) test was suspected, due to the lack of symptoms of hyperthyroidism and a different immunoassay platform confirmed a low FT4 result...
January 2017: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28811719/refractory-hepatic-encephalopathy-in-a-patient-with-hypothyroidism-another-element-in-ammonia-metabolism
#16
Fernando Díaz-Fontenla, Marta Castillo-Pradillo, Arantxa Díaz-Gómez, Luis Ibañez-Samaniego, Pilar Gancedo, Juan Adan Guzmán-de-Villoria, Pilar Fernández-García, Rafael Bañares-Cañizares, Rita García-Martínez
Hepatic encephalopathy (HE) remains a diagnosis of exclusion due to the lack of specific signs and symptoms. Refractory HE is an uncommon but serious condition that requires the search of hidden precipitating events (i.e., portosystemic shunt) and alternative diagnosis. Hypothyroidism shares clinical manifestations with HE and is usually considered within the differential diagnosis of HE. Here, we describe a patient with refractory HE who presented a large portosystemic shunt and post-ablative hypothyroidism...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28775186/are-thyroid-nodules-associated-with-sex-related-hormones-a-cross-sectional-spect-china-study
#17
Yi Chen, Yingchao Chen, Ningjian Wang, Chi Chen, Xiaomin Nie, Qin Li, Bing Han, Fangzhen Xia, Hualing Zhai, Boren Jiang, Zhoujun Shen, Yingli Lu
OBJECTIVE: Little is known about the association between thyroid nodules (TNs) and endogenous sex hormones. We aimed to investigate the relationship between TNs and sex-related hormones among men in China. SETTING: The data were obtained from a cross-sectional study Survey on Prevalence in East China for Metabolic Diseases and Risk Factors (SPECT-China study, 2014-2015) based on the population. PARTICIPANTS: In total, 4024 men over 18 years of age who were not using hormone replacement therapy and who underwent complete assays of the serum total testosterone (T), oestradiol (E2), follicle-stimulating hormone (FSH), luteinising hormone (LH) and sex hormone-binding globulin (SHBG) levels as well as thyroid ultrasonography (US) enrolled in this study...
August 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/28746208/myopathy-in-hyperthyroidism-as-a-consequence-of-rapid-reduction-of-thyroid-hormone-a-case-report
#18
Qianrui Li, Yuping Liu, Qianying Zhang, Haoming Tian, Jianwei Li, Sheyu Li
RATIONALE: Myalgia and elevated creatine kinase (CK) are occasionally observed during the treatment of hyperthyroid patients. Relative hypothyroidism resulted from rapid thyroid hormone reduction had been promoted as a plausible cause of these myopathic changes, however rarely reported. PATIENT CONCERNS: We hereby presented a 20-year-old female with Grave's disease, who developed myopathy and elevated CK during rapid correction of thyroid hormone. DIAGNOSES: Relative hypothyroidism-induced myopathy...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28695483/diagnosis-and-management-of-treatment-refractory-hypothyroidism-an-expert-consensus-report
#19
REVIEW
M Centanni, S Benvenga, I Sachmechi
There is a frequently encountered subset of hypothyroid patients who are refractory to standard thyroid hormone replacement treatment and require unexpectedly high doses of levothyroxine. In addition to clinical situations where hypothyroid patients are non-compliant, or where there is the possibility of excipient-induced disease exacerbation (gluten/celiac disease), therapeutic failure may be due to impaired absorption of the administered drug. The common approach to managing patients with unusual thyroxine needs is to escalate the dose of levothyroxine until targeted TSH levels are achieved...
July 10, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28693124/pediatric-toxic-polycystic-thyroid
#20
Janeil M Belle, Nektarios Vasilottos, Todd D Nebesio, Benjamin C James
BACKGROUND: Polycystic thyroid disease (PCTD) is a rare condition and has been described in adults in the setting of subclinical and clinical hypothyroidism. We present the first known case of a pediatric patient with diffuse macrocystic degeneration of the thyroid. CLINICAL PRESENTATION: A 6-year-old previously healthy patient was evaluated after presenting with a 16-month history of an enlarging polycystic thyroid and hyperthyroidism. Markers of autoimmune thyroid disease including thyroid stimulating immunoglobulin (TSI), thyroid stimulating hormone (TSH) receptor antibody, thyroid peroxidase antibody and thyroglobulin antibody were negative...
June 16, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
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