HCG alpha Definition

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HCG alpha: A non-covalently bound subunit of the glycoprotein hormones TSH; FOLLICLE STIMULATING HORMONE; LH; and HCG which originates in the anterior pituitary gland and placenta. This subunit is virtually identical in structure and indistinguishable by radioimmunoassay in all of the above glycoproteins. It is present in both men and women, but is elevated in postmenopausal women and in patients with hypothyroidism, uremia and malignant tumors. The alpha subunit may be involved directly in recognition of certain receptors.

Synonym: thyrotropin alpha subunit, alpha subunit tsh, alpha subunit lh, alpha subunit hcg, alpha subunit fsh, asgph, lutotropin alpha, lh alpha, fsh alpha, common alpha subunit glycoprotein hormones, alpha subunit luteinizing hormone, alpha subunit human chorionic gonadotropin, alpha subunit glycoprotein hormones, alpha subunit follicle stimulating hormone, tsh alpha, alpha subunit thyroid stimulating hormone, alpha subunit pituitary glycoprotein hormone.

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