Journal
TRENDS IN ENDOCRINOLOGY AND METABOLISM
Volume 14, Issue 7, Pages 327-333Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/S1043-2760(03)00114-0
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Resistance to thyroid hormone (RTH) is a syndrome in which patients have raised serum thyroid hormone (TH) levels and raised or inappropriately normal thyrotropin (TSH) levels. In general, patients exhibit TH resistance in the pituitary and peripheral tissues. Novel techniques and genetically engineered mouse model systems have increased our understanding of thyroid hormone receptor (TR) action, and shed new light on the underlying molecular mechanisms for RTH. In particular, we are learning how mutant TRs from RTH patients can block wild-type TR function, with consequent effects in various tissues and cells. This dominant-negative activity has important implications for other hormone-resistant conditions and in hormone-sensitive tumors. This article examines the molecular basis of RTH.
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