WebbThyroid-stimulating hormone (TSH), through activation of its G-protein-coupled thyrotropin receptor (TSHR), controls the synthesis of thyroid hormone-an essential metabolic … WebbBackground: Thyrotoxic disease can be difficult to recognize in patients with resistance to thyroid hormone (RTH) because the clinical symptoms of thyrotoxicosis cannot be observed, and thyrotropin (TSH) may not be suppressed because of hormone resistance. Painless thyroiditis is a relatively common cause of thyrotoxicosis, but its occurrence in …
Autoantibody mimicry of hormone action at the thyrotropin receptor
http://www.paper.edu.cn/scholar/showpdf/MUT2IN0INTT0cxyh Webb6 dec. 2024 · Thyrotropin receptor antibodies (TRAb): This autoantibody inhibits proper TSH activity. Two types of autoantibodies prevent normal TSH function. TSI binds to … northlake mall charlotte stores
Characterization of Apparently Paradoxical Thyrotropin Binding ...
WebbThyroid hormone synthesis is controlled by thyrotropin (TSH), which acts at the thyrotropin receptor (TSHR)2. In patients with Graves’ disease, autoantibodies that activate the TSHR pathologically increase thyroid hormone activity3. How autoantibodies mimic thyrotropin function remains unclear. Anti-thyroid antibodies can be subdivided into groups according to their target antigen. Anti-thyroid peroxidase (anti-TPO) antibodies are specific for the autoantigen TPO, a 105kDa glycoprotein that catalyses iodine oxidation and thyroglobulin tyrosyl iodination reactions in the thyroid gland. Most antibodies produced are directed to conformational epitopes of the immunogenic carboxyl-terminal region of the TPO protein, although antibodies to linear epitopes h… WebbClinical thyrotoxicosis in Graves' disease patients is caused by thyrotropin receptor (TSHR)-stimulating autoantibodies. The molecular mechanisms of TSHR post-translational modification, TSHR signaling and TSHR–autoantibody interaction are still debatable, and the precise interaction of stimulating and blocking autoantibodies with TSHR is unclear. northlake mall charlotte nc stores