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[Molecular defects in plasma membrane hormone receptors]
1Clinical Laboratory Medicine, Kochi Medical School.
Nihon Rinsho. Japanese Journal of Clinical Medicine
|February 23, 2002
Summary
Mutations in hormone receptors cause resistance or overactivation, leading to various genetic disorders. This review details molecular defects in plasma membrane receptors linked to clinical conditions.
Area of Science:
- Endocrinology and Molecular Biology
- Cellular Signaling Pathways
Context:
- Hormone action relies on plasma membrane receptors transmitting signals.
- Receptor mutations cause loss-of-function (resistance) or gain-of-function (constitutive activation).
- Germline mutations cause inherited resistance; somatic mutations cause constitutive activation.
Purpose:
- To review molecular defects in plasma membrane hormone receptors.
- To link these defects to a wide range of clinical disorders.
Summary:
- Plasma membrane receptors mediate hormone effects; mutations disrupt signal transduction.
- G-protein coupled receptors (GPCRs) and single-transmembrane receptors are implicated.
- Mutations are associated with conditions like dwarfism, hormone resistance (TSH, LH, FSH, ACTH, insulin, GH), and hyper/hypothyroidism.
Impact:
- Understanding receptor defects is crucial for diagnosing and potentially treating hormone-related disorders.
- Highlights the role of genetic variations in endocrine diseases.
- Provides a comprehensive overview for researchers and clinicians in endocrinology and genetics.