Pituitary resistance to thyroid hormones

P. Beck-Peccoz, F. Forlorn, D. Cortelazzi, L. Persani, M. J. Papandreou, C. Asteria, G. Faglia

Research output: Contribution to journalArticlepeer-review

Abstract

Pituitary thyroid hormone resistance (PRTH) refers to a particular form of thyroid hormone refractoriness that is accompanied by peripheral hyperthyroidism. as only the TSH-secreting pituitary cells appear to be resistant to the effects of thyroid hormones. The presence of PRTH is suspected and diagnosed on the basis of the finding of high free thyroid hormone levels along with unsuppressed TSH. clinical signs and symptoms of hyperthyroidism and values of at least one of the parameters evaluating peripheral thyroid hormone action in the hyperthyroid range. However, most patients with PRTH present with clinical signs and symptoms of thyroid dysfunction, particularly goiter and tachycardia, overlapping those recorded in patients with generalized thyroid hormone resistance (GRTH), i.e. refractoriness to thyroid hormones at both pituitary and peripheral tissue level. Moreover, most of them display normal values of other parameters evaluating the peripheral effects of thyroid hormones and bear mutations in the gene encoding for T3 nuclear receptors similar to those found in patients with GRTH. These findings are questioning the existence of PRTH as a separate clinical entity and support the view that the various forms of thyroid hormone resistance may be part of a spectrum of disease with variable expression in different issues.

Original languageEnglish
Pages (from-to)66-72
Number of pages7
JournalHormone Research in Paediatrics
Volume38
Issue number1-2
DOIs
Publication statusPublished - 1992

Keywords

  • Generalized resistance
  • Hyperthyroidism
  • Pituitary resistance
  • Resistance to thyroid hormones
  • T<inf>3</inf> receptor mutations
  • Thyroid hormone analogs
  • Thyroid hormone receptors

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism
  • Pediatrics, Perinatology, and Child Health

Fingerprint Dive into the research topics of 'Pituitary resistance to thyroid hormones'. Together they form a unique fingerprint.

Cite this