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1: Science. 1970 Sep 11;169(950):1099-100.Click here to read Links

Conversion of thyroxine to triiodothyronine in normal human subjects.

Sterling K, Brenner MA, Newman ES.

The conversion of thyroxine to triiodothyronine, previously demonstrated in athyreotic human subjects, has been investigated in normal subjects who were given intravenous injections of purified thyroxine labeled with carbon-14 in ring A and in the alanine side chain. Evidence for the conversion of T4 to T3 was provided by the finding of carbon-14 in the T3 fraction isolated from serums. It is estimated that an appreciable fraction of T4 may be transformed to T3 in normal man.

PMID: 5449321 [PubMed - indexed for MEDLINE]

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