Thyroid-stimulating hormone (TSH, thyrotropin) is a glycopeptide hormone synthesized and secreted by thyrotrope cells in the anterior pituitary gland which regulates the endocrine function of the thyroid gland. Like other glycoprotein hormones, TSH consists of a common alpha subunit and a beta subunit unique to TSH which determines its specificty. TSH binds to TSH receptor to stimulate the release of the hormones thyroxine (T4) and triiodothyronine (T3) (Chin and Habener 1981).
Chin, WW, Habener, JF
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