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Binding of the antibody to the amino terminus of the TSH receptor shows stimulatory activity, whereas binding to residues 261-370 or 388-403 block the activity. TRAbs are present in 70–100% of Graves' disease (85–100% for activating antibodies and 75–96% for blocking antibodies) and 1–2% of normal individuals. [1] [2] [11] Activating ...
Thyroid function tests (TFTs) is a collective term for blood tests used to check the function of the thyroid. [1] TFTs may be requested if a patient is thought to suffer from hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid), or to monitor the effectiveness of either thyroid-suppression or hormone replacement therapy.
Jostel's TSH index (TSHI or JTI), also referred to as Jostel's thyrotropin index or Thyroid Function index (TFI), is a method for estimating the thyrotropic (i.e. thyroid stimulating) function of the anterior pituitary lobe in a quantitative way.
from quantiles of FT4 and TSH concentration (as determined based on cumulative distribution functions). [1] Per definition the TFQI has a mean of 0 and a standard deviation of 0.37 in a reference population. [1] This explains the reference range of –0.74 to + 0.74.
Sensitivity of TSH-producing pituitary cells to thyroid hormones; also a marker for the set point of thyroid homeostasis The Thyrotroph Thyroid Hormone Sensitivity Index (abbreviated TTSI , also referred to as Thyrotroph T4 Resistance Index or TT4RI ) is a calculated structure parameter of thyroid homeostasis .
22095 Ensembl ENSG00000165409 ENSMUSG00000020963 UniProt P16473 P47750 RefSeq (mRNA) NM_000369 NM_001018036 NM_001142626 NM_001113404 NM_011648 RefSeq (protein) NP_000360 NP_001018046 NP_001136098 NP_001106875 NP_035778 Location (UCSC) Chr 14: 80.95 – 81.15 Mb Chr 12: 91.35 – 91.52 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse The thyrotropin receptor (or TSH receptor) is a ...
Stimulating antibodies to the TSH receptor mimic TSH and cause Graves' disease. In addition, hCG shows some cross-reactivity to the TSH receptor and therefore can stimulate production of thyroid hormones. In pregnancy, prolonged high concentrations of hCG can produce a transient condition termed gestational hyperthyroidism. [14]
These two markers are an elevated level of thyroid stimulating hormone receptor antibodies (TSHR-Ab) and smoking. A positive TSHR-Ab at the end of antithyroid drug treatment increases the risk of recurrence to 90% ( sensitivity 39%, specificity 98%), a negative TSHR-Ab at the end of antithyroid drug treatment is associated with a 78% chance of ...