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Ilisimatusarfik, University of Greenland, Nuuk, Greenland
National Board of Health, Nuuk, Greenland
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Ilisimatusarfik, University of Greenland, Nuuk, Greenland
Department of Internal Medicine, Queen Ingrid’s Hospital, Nuuk, Greenland
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Queen Ingrid’s Health Care Centre, Nuuk, Greenland
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Ilisimatusarfik, University of Greenland, Nuuk, Greenland
Department of Internal Medicine, Queen Ingrid’s Hospital, Nuuk, Greenland
Department of Geriatric Medicine, Aalborg University Hospital, Aalborg, Denmark
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genetic component in thyroid autoimmunity. An interesting path to consider is the potential modulation of the immune responses by thyroid hormones ( 32 ) influenced by T3 levels altered by the cold that comes with Arctic residence ( 33 ). Furthermore
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Background:
Mutations in TBL1X, part of the NCoR1/SMRT corepressor complex, were identified in patients with hereditary X-linked central congenital hypothyroidism and associated hearing loss. The role of TBL1X in thyroid hormone (TH) action, however, is incompletely understood. The aim of the present study was to investigate the role of TBL1X on T3 regulated gene expression in two human liver cell models.
Methods:
A human hepatoma cell line (HepG2) wherein TBL1X was down regulated using siRNAs, and human-induced pluripotent stem cell-derived hepatocytes (iHeps) generated from individuals with a TBL1X N365Y mutation. Both cell types were treated with increasing concentrations of T3. The expression of T3 regulated genes was measured by qPCR.
Results:
KLF9, CPT1A and PCK1 mRNA expression was higher upon T3 stimulation in the HepG2 cells with decreased TBL1X expression compared to controls, while DIO1 mRNA expression was lower. Hemizygous TBL1X N365Y iHeps exhibited decreased expression of CPT1A, G6PC1, PCK1, FBP1 and ELOVL2 compared to cells with the heterozygous TBL1X N365Y, but KLF9 and HMGCS2 expression was unaltered.
Conclusion:
Downregulation of TBL1X in HepG2 cells and the TBL1X N365Y variant in iHeps have differential effects on T3 regulated gene expression. This suggests that TBL1X may play a gene context role in thyroid hormone TH action.
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between the low and high risk), remnant ablation may be indicated but the decision must be individualized. Effective thyroid ablation requires adequate stimulation by TSH. This may be achieved by thyroid hormone withdrawal (THW) or after recombinant
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(HPT) axis senses circulating thyroid hormone concentrations and physiological thyroid status is controlled by negative feedback regulation of thyrotropin-releasing hormone (TRH) in the hypothalamus and thyroid-stimulating hormone (TSH, thyrotropin
Department of Medical Biotechnology and Translational Medicine, University of Milan, Milano, Italy
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Endocrine Section, Beacon Hospital, Dublin, Ireland.
School of Medicine, University College Dublin, Ireland
Endocrinology Department, St Vincent’s University Hospital, Dublin, Ireland
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screening for rare genetic and acquired disorders of thyroid hormone transport, metabolism, and action ( Recommendation: S; Quality of evidence: ØØØO). Dynamic endocrine tests (TRH stimulation (if available), L-T3 suppression), pituitary imaging (MRI
Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário de São João, Porto, Portugal
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Department of Cardiology, Centro Hospitalar Gaia/Espinho, Vila Nova de Gaia, Portugal
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Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário de São João, Porto, Portugal
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EPIUnit – Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
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Department of Biomedicine, Faculdade de Medicina da Universidade do Porto, Porto, Portugal
EPIUnit – Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
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Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
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Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Faculdade de Medicina da Universidade do Porto, Porto, Portugal
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studies have suggested that TSH may also have direct effects on heart and vessels [ 35 - 37 ]. In the myocardium, thyroid hormone stimulates channels and transporters involved in calcium fluxes, improving both contraction and relaxation. Thyroid hormone
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ultrasonography without performing cytological examination at another hospital. The serum concentration of thyroid-stimulating hormone was 2.4 μIU/ml (reference range 0.3-5.0), free thyroxine 0.98 ng/dl (0.70-1.60), and thyroglobulin 80.4 ng/ml (<35
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Introduction Antibodies (Ab) to the thyroid-stimulating hormone receptor (TSHR) may mimic [ 1 - 3 ] or block [ 4 ] the action of TSH or be functionally neutral [ 5 ]. TSHR stimulating Ab (TSAb) are responsible for many of the clinical
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Introduction Diagnosis of thyroid disease is based on thyroid-stimulating hormone (TSH) measurement. Occasionally, this measurement may be erroneous due to analytical interference. Clinical biochemists and clinicians need to be aware of this
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Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário de São João, Porto, Portugal
Department of Surgery and Physiology, Cardiovascular Research Unit, Faculty of Medicine from the University of Porto, Porto, Portugal
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Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário de São João, Porto, Portugal
Institute for Research Innovation in Health, University of Porto, Porto, Portugal
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Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário de São João, Porto, Portugal
Department of Surgery and Physiology, Cardiovascular Research Unit, Faculty of Medicine from the University of Porto, Porto, Portugal
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Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário de São João, Porto, Portugal
Institute for Research Innovation in Health, University of Porto, Porto, Portugal
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outcomes The following parameters were collected from the patients’ clinical records: sex, age, age at diagnosis of Graves' disease, initial TRAbs, free tri-iodothyronine (FT3), free thyroxine (FT4), thyroid stimulating hormone (TSH), height, weight