Browsing by Subject "TSH"

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  • Zhou, Wei; Brumpton, Ben; Kabil, Omer; Gudmundsson, Julius; Thorleifsson, Gudmar; Weinstock, Josh; Zawistowski, Matthew; Nielsen, Jonas B.; Chaker, Layal; Medici, Marco; Teumer, Alexander; Naitza, Silvia; Sanna, Serena; Schultheiss, Ulla T.; Cappola, Anne; Karjalainen, Juha; Kurki, Mitja; Oneka, Morgan; Taylor, Peter; Fritsche, Lars G.; Graham, Sarah E.; Wolford, Brooke N.; Overton, William; Rasheed, Humaira; Haug, Eirin B.; Gabrielsen, Maiken E.; Skogholt, Anne Heidi; Surakka, Ida; Smith, George Davey; Pandit, Anita; Roychowdhury, Tanmoy; Hornsby, Whitney E.; Jonasson, Jon G.; Senter, Leigha; Liyanarachchi, Sandya; Ringel, Matthew D.; Xu, Li; Kiemeney, Lambertus A.; He, Huiling; Netea-Maier, Romana T.; Mayordomo, Jose; Plantinga, Theo S.; Hrafnkelsson, Jon; Hjartarson, Hannes; Sturgis, Erich M.; Palotie, Aarno; Daly, Mark; Citterio, Cintia E.; Arvan, Peter; Brummett, Chad M.; Boehnke, Michael; de la Chapelle, Albert; Stefansson, Kari; Hveem, Kristian; Willer, Cristen J.; Asvold, Bjorn Olav (2020)
    Thyroid stimulating hormone (TSH) is critical for normal development and metabolism. To better understand the genetic contribution to TSH levels, we conduct a GWAS meta-analysis at 22.4 million genetic markers in up to 119,715 individuals and identify 74 genome-wide significant loci for TSH, of which 28 are previously unreported. Functional experiments show that the thyroglobulin protein-altering variants P118L and G67S impact thyroglobulin secretion. Phenome-wide association analysis in the UK Biobank demonstrates the pleiotropic effects of TSH-associated variants and a polygenic score for higher TSH levels is associated with a reduced risk of thyroid cancer in the UK Biobank and three other independent studies. Two-sample Mendelian randomization using TSH index variants as instrumental variables suggests a protective effect of higher TSH levels (indicating lower thyroid function) on risk of thyroid cancer and goiter. Our findings highlight the pleiotropic effects of TSH-associated variants on thyroid function and growth of malignant and benign thyroid tumors. Thyroid stimulating hormone (TSH) is critical for normal development and metabolism. Here, the authors conduct a GWAS and suggest protective effect of higher TSH on risk of thyroid cancer and goitre.
  • Vehviläinen, Mari; Salem, Abdelhakim; Asghar, Muhammad Yasir; Salo, Tuula; Siponen, Maria (2020)
    Objective: An association between hypothyroidism (HT) and oral lichen planus (OLP) has been reported. However, the mechanisms that could explain this association remain unresolved. This study aimed to evaluate the expression of thyroid-stimulating hormone (TSH) and thyroid-stimulating hormone receptor (TSHR) in healthy oral mucosa and in OLP lesions of individuals with and without HT. Material and methods: Immunohistochemical expression of TSH and TSHR was studied in oral mucosal biopsies obtained from 14 OLP patients with HT, 14 OLP patients without HT and 10 healthy controls without oral mucosal lesions. Gene expression of TSHR was investigated by using three different PCR techniques in oral mucosal samples from 7 OLP patients with HT, 3 OLP patients without HT, 9 healthy controls and in cultured human oral epithelial cells. Gene expression of TSH was examined by employing 2 PCR techniques in oral mucosal samples from 2 OLP patients with HT, 2 OLP patients without HT and 4 healthy controls. Results: TSH and TSHR stainings were negative in the studied oral mucosal specimens. Gene quantification assays demonstrated negative gene expression of TSH and TSHR in clinical and in vitro samples. Conclusions: These results suggest that TSH and TSHR may not be commonly involved in the pathogenetic mechanism that could explain the association between OLP and hypothyroidism.