The follicular iodide pool as a two-compartment system: evidence from the unstimulated thyroid gland.
The isotopic equilibrium method was used for a 60-day period to follow iodine turnover in control and hypophysectomized rats. After the suppression of TSH by hypophysectomy, only the captured iodide is used for iodination of thyroglobulin, the iodide recycling being abolished. In unstimulated gland, two metabolically distinct iodide compartments do exist which differ either in their chemical form or in their morphological distribution, or both.
D000818:Animals; D007016:Hypophysectomy; D007454:Iodides / Q000378:metabolism*; D007457:Iodine Radioisotopes / Q000378:metabolism; D008297:Male; D051381:Rats; D013954:Thyroglobulin / Q000096:biosynthesis; D013961:Thyroid Gland / Q000378:metabolism*
D007454:Iodides; D007457:Iodine Radioisotopes; D013954:Thyroglobulin