9414. Thyrotropin

Nomenclature

CAS number: 9002-71-5
TSH; thyroid-stimulating hormone; thyrotropic hormone.

Description and references

Glycoprotein hormone secreted by the anterior pituitary under the regulation of TRH, q.v. Stimulates the uptake of iodine, synthesis of thyroglobulin and release of thyroxine, q.v., by the thyroid. Structure is a heterodimer of α- and β- subunits; analogous with chorionic gonadotropin, luteinizing hormone, and follicle-stimulating hormone, q.q.v. Reviews of early literature: W. T. Salter, Hormones 2, 301-349 (1950); M. Sonnenberg, Vitam. Horm. 16, 205-261 (1958). Purification from bovine pituitaries: T.-H. Liao et al., J. Biol. Chem. 244, 6458 (1969). Amino acid sequence of bovine TSH: B. Shome et al., ibid. 246, 833 (1971); T.-H. Liao, J. G. Pierce, ibid. 850; of human α and β subunits: J. G. Pierce et al., Recent Prog. Horm. Res. 27, 165 (1971). Use in diagnosis of thyroid function: C. W. H. Havard, M. Boss, Br. Med. J. 3, 678 (1974). Review of structure and bioactivity: J. A. Magner, Endocr. Rev. 11, 354-385 (1990); and therapeutic potential: M. Grossmann et al., ibid. 18, 476-501 (1997).

Properties

Biological activity is destroyed by heating and by proteolysis with pepsin, trypsin, and chymotrypsin. Also inactivated by oxidizing agents, such as potassium permanganate and elemental iodine.

Derivative

Thyrotropin alfa.

Nomenclature

CAS number: 194100-83-9
Thyrotropin (human β-subunit) complex with chorionic gonadotropin (human α-subunit); Thyrogen (Genzyme).

Description and references

Recombinant human TSH produced in Chinese hamster ovary cells. Prepn and pharmacology: E. S. Cole et al., Biotechnology 11, 1014 (1993). See also: C. A. Kelton et al., US 5240832 (1993 to Genzyme). Use in diagnosis of differentiated thyroid carcinoma (DTC): P. W. Ladenson et al., N. Engl. J. Med. 337, 888 (1997). Clinical evaluation as adjunct to radioablative treatment of DTC: M. Luster et al., J. Clin. Endocrinol. Metab. 85, 3640 (2000). Review of clinical studies: R. J. Robbins, A. K. Robbins, ibid. 88, 1933-1938 (2003).

Therapeutic Category

Diagnostic aid (thyroid tumor imaging).

Therapeutic Category (Veterinary)

Diagnostic aid (thyroid function).

Keywords

Diagnostic Aid