Canadian Medical Guide > Chemicals and Drugs > Hormones, Hormone Substitutes, and Hormone Antagonists > Hormones > Thymus Hormones Terms and Definitions

Thymus Hormones

Medical Definition:	Humoral factors secreted by the thymus gland. They participate in the development of the lymphoid system and the maturation of the cellular immune response.
Guide Notes:	/biosyn /physiol permitted
Previously Indexed:	Hormones (1966-1976),Thymus Gland (1966-1976)

Thymus Hormones Categories.

	Thymic Factor, Circulating - A thymus-dependent nonapeptide found in normal blood. Stimulates the formation of E rosettes and is believed to be involved in T-cell differentiation.
	Thymopoietins - Two closely related polypeptides (molecular weight 7,000) isolated from the thymus gland. These hormones induce the differentiation of prothymocytes to thymocytes within the thymus. They also cause a delayed impairment of neuromuscular transmission in vivo and are therefore believed to be the agent responsible for myasthenia gravis.
	Thymosin - Thymosin. A family of heat-stable, polypeptide hormones secreted by the thymus gland. Their biological activities include lymphocytopoiesis, restoration of immunological competence and enhancement of expression of T-cell characteristics and function. They have therapeutic potential in patients having primary or secondary immunodeficiency diseases, cancer or diseases related to aging.

Thymus Hormones Medical Definitions and Terms

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