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Updated: Aug 15, 2026

Detection of Ligand-activated G Protein-coupled Receptor Internalization by Confocal Microscopy
Published on: April 9, 2017
[Connatal endocrine disorders caused by receptor defects]
Abstract:
Since the description in 1942 of pseudohypoparathyroidism by Albright et al. hormone resistances have been documented for several peptide and steroid hormones as well as the thyroid hormones. Some of these diseases appear to be acquired while others are genetic. The hormone unresponsiveness may be complete or partial and may involve multiple hormone systems, as demonstrated in pseudohypoparathyroidism type I. Hormone resistances are characterized by hypofunction of hormone systems combined with a normal or even high secretion of the particular hormones. The connatal endocrinopathies where receptor defects have been implicated are reviewed.
Insights
Hormone resistance, where the body doesn't respond to hormones, can be genetic or acquired. These conditions, like pseudohypoparathyroidism, involve hormone systems with normal or high hormone secretion but low function.
Area of Science:
- Endocrinology
- Genetics
- Molecular Biology
Context:
- Hormone resistance, first described in 1942, affects various endocrine systems.
- Diseases include pseudohypoparathyroidism, impacting multiple hormone pathways.
- Conditions can be congenital or acquired, with varying degrees of hormone unresponsiveness.
Purpose:
- To review hormone resistance and unresponsiveness syndromes.
- To highlight the role of receptor defects in congenital endocrinopathies.
- To discuss the characteristics of hormone resistance.
Summary:
- Hormone resistance involves unresponsiveness to peptide, steroid, and thyroid hormones.
- Characterized by hypofunction despite normal or elevated hormone levels.
- Pseudohypoparathyroidism type I exemplifies multi-systemic hormone resistance.
Impact:
- Advances understanding of endocrine disorders.
- Provides insights into genetic and acquired hormone resistance mechanisms.
- Informs diagnosis and potential therapeutic strategies for hormone unresponsiveness.
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