Familial/sporadic glucocorticoid resistance syndrome and hypertension

Tomoshige Kino, Alessandra Vottero, Evangelia Charmandari, George P. Chrousos

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Glucocorticoids regulate diverse functions important for the maintenance of central nervous system, cardiovascular, metabolic, and immune homeostasis. The actions of these hormones are mediated by the specific intracellular glucocorticoid receptors (GRs). Pathologic conditions associated with changes of tissue sensitivity to these hormones have been described. The syndrome of familial/sporadic glucocorticoid resistance is characterized by hypercortisolism without Cushing syndrome stigmata. Many of the patients present with hypertension, with or without hypokalemic alkalosis, as a result of elevated concentrations of cortisol and other salt-retaining steroids. The molecular defects of 4 kindreds and one sporadic case have been elucidated as inactivating mutations in the ligand-binding domain of the GR. In two patients in whom the GR was mutated at amino acid isoleucine 559 to aspartic acid (GRαI559N) and isoleucine 747 to methionine (GRαI747M), respectively, glucocorticoid resistance developed at the heterozygous state, with transdominant negative activity of each of the mutant receptors upon the wild-type protein. Retention of the wild-type receptor in the cytoplasm by the mutant receptor was found in the former, while inappropriate accumulation of p160-type coactivators on the promoter region of glucocorticoid-responsive genes, because of a defective interaction between the AF2 region of the mutant receptor and the LXXLL motif of the coactivators, was determined in the latter. These results suggest that the pathologic mechanisms of glucocorticoid resistance is quite broad, and this is reflected in the wide variability of the clinical picture in patients with the syndrome.

Original languageEnglish
Pages (from-to)101-111
Number of pages11
JournalAnnals of the New York Academy of Sciences
Volume970
Publication statusPublished - 5 Jun 2002
Externally publishedYes

Fingerprint

Glucocorticoid Receptors
Glucocorticoids
Cushing Syndrome
Isoleucine
Hypertension
Hormones
Christianity
Alkalosis
Genetic Promoter Regions
Aspartic Acid
Methionine
Hydrocortisone
Cytoplasm
Homeostasis
Central Nervous System
Salts
Steroids
Maintenance
Ligands
Amino Acids

Keywords

  • Glucocorticoid receptor
  • Mutation
  • Nuclear translocation
  • P160 coactivators
  • Tissue sensitivity to glucocorticoids

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • History and Philosophy of Science

Cite this

Familial/sporadic glucocorticoid resistance syndrome and hypertension. / Kino, Tomoshige; Vottero, Alessandra; Charmandari, Evangelia; Chrousos, George P.

In: Annals of the New York Academy of Sciences, Vol. 970, 05.06.2002, p. 101-111.

Research output: Contribution to journalArticle

Kino, Tomoshige ; Vottero, Alessandra ; Charmandari, Evangelia ; Chrousos, George P. / Familial/sporadic glucocorticoid resistance syndrome and hypertension. In: Annals of the New York Academy of Sciences. 2002 ; Vol. 970. pp. 101-111.
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