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Thyroglobulin is synthesized in the rough endoplasmic reticulum and follows the secretory pathway to enter the colloid in the lumen of the thyroid follicle by exocytosis. Meanwhile, a sodium-iodide (Na/I) symporter pumps iodide (I - ) actively into the cell, which previously has crossed the endothelium by largely unknown mechanisms.
Thyroid hormones act on nearly every cell in the body. They act to increase the basal metabolic rate, affect protein synthesis, help regulate long bone growth (synergy with growth hormone) and neural maturation, and increase the body's sensitivity to catecholamines (such as adrenaline) by permissiveness. [12]
Thyroid hormone synthesis. Add languages. Add links. Article; ... Download QR code; Print/export Download as PDF; Printable version; In other projects
Thyroid hormone synthesis. [2]Follicular cells take up iodide and amino acids from the blood circulation on the basolateral side, synthesize thyroglobulin and thyroperoxidase from amino acids and secrete these into the thyroid follicles together with iodide.
Original – Synthesis of thyroid hormones Reason This illustration of thyroid hormone synthesis is used in many articles. It has a detailed caption in the first two articles listed below. The file description is detailed and lists the sources.
Category: Hormones by site of synthesis. ... Download as PDF; ... Hormones of the thyroid gland (11 P) This page was ...
The final step in thyroxine synthesis involves the free radical mediated coupling of two DIT residues, catalyzed by TPO, to form T 4 while still attached to the Tg backbone. [5] [6] When thyroid hormone is needed, Tg is internalized by thyrocytes, and proteolytic enzymes in lysosomes cleave the T 4 from Tg, allowing for its release into the ...