Journal
TRENDS IN ENDOCRINOLOGY AND METABOLISM
Volume 19, Issue 7, Pages 231-238Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tem.2008.06.003
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The human adrenal cortex expresses low levels of luteinizing hormone/chorionic gonadotropin receptors (LHCGR), a characteristic gonad-specific G-protein coupled receptor (GPCR). LHCGR levels increase in the adrenal cortex after exposure to chronically elevated gonadotropins (e.g. after gonadectomy). In fact, heightened ectopic LHCGR levels are observed in a subclass of human adrenocortical tumors, and gonadotropin-responsive adrenocortical hyperplasia and tumors occur in several animal species. These findings suggest that adrenocortical responsiveness to LH/CG might be a physiological phenomenon that is amplified in the presence of elevated gonadotropin levels. Such increased gonadotropin action can induce pathologies ranging from adrenocorticotropic hormone (ACTH)-independent Cushing syndrome to malignant adrenal tumors. The authors review the current information on adrenocortical responses to gonadotropins in experimental animals and humans.
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