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  2. Releasing and inhibiting hormones - Wikipedia

    en.wikipedia.org/wiki/Releasing_and_inhibiting...

    For example, thyrotropin-releasing hormone (TRH) is released from the hypothalamus in response to low levels of secretion of thyroid-stimulating hormone (TSH) from the pituitary gland. The TSH in turn is under feedback control by the thyroid hormones T4 and T3. When the level of TSH is too high, they feed back on the brain to shut down the ...

  3. Hypothalamic–pituitary–thyroid axis - Wikipedia

    en.wikipedia.org/wiki/Hypothalamic–pituitary...

    The TSH, in turn, stimulates the thyroid to produce thyroid hormone until levels in the blood return to normal. Thyroid hormone exerts negative feedback control over the hypothalamus as well as anterior pituitary, thus controlling the release of both TRH from hypothalamus and TSH from anterior pituitary gland. [2]

  4. Thyrotropin-releasing hormone - Wikipedia

    en.wikipedia.org/wiki/Thyrotropin-releasing_hormone

    Thyrotropin-releasing hormone (TRH) is a hypophysiotropic hormone produced by neurons in the hypothalamus that stimulates the release of thyroid-stimulating hormone (TSH) and prolactin from the anterior pituitary. TRH has been used clinically for the treatment of spinocerebellar degeneration and disturbance of consciousness in humans. [1]

  5. Thyroid-stimulating hormone - Wikipedia

    en.wikipedia.org/wiki/Thyroid-stimulating_hormone

    The concentration of thyroid hormones (T 3 and T 4) in the blood regulates the pituitary release of TSH; when T 3 and T 4 concentrations are low, the production of TSH is increased, and, conversely, when T 3 and T 4 concentrations are high, TSH production is decreased. This is an example of a negative feedback loop. [5]

  6. List of human hormones - Wikipedia

    en.wikipedia.org/wiki/List_of_human_hormones

    60 Thyroid-stimulating hormone (or thyrotropin) TSH Peptide: anterior pituitary: thyrotropes: Thyrotropin receptor → cAMP: thyroid gland: secrete thyroxine (T 4) and triiodothyronine (T 3) 61 Thyrotropin-releasing hormone: TRH Peptide: hypothalamus: Parvocellular neurosecretory neurons: TRHR → IP 3: anterior pituitary: Release thyroid ...

  7. Thyrotropic cell - Wikipedia

    en.wikipedia.org/wiki/Thyrotropic_cell

    The hypothalamus secretes thyrotropin-releasing hormone (TRH) into portal veins, which carry this hormone to the anterior pituitary. Thyrotropin-releasing hormone is a relatively small peptide, containing only three amino acids. TRH stimulates the thyrotropic cells through the use of a phospholipase C second messenger system. [1]

  8. Thyroid function tests - Wikipedia

    en.wikipedia.org/wiki/Thyroid_function_tests

    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.

  9. Jostel's TSH index - Wikipedia

    en.wikipedia.org/wiki/Jostel's_TSH_index

    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. [1] [2] The equation has been derived from the logarithmic standard model of thyroid homeostasis.