Chemicals and Drugs

Adrenergic alpha-2 Receptors

A subclass of alpha-adrenergic receptors found on both presynaptic and postsynaptic membranes where they signal through Gi-Go G-PROTEINS. While postsynaptic alpha-2 receptors play a traditional role in mediating the effects of ADRENERGIC AGONISTS, the subset of alpha-2 receptors found on presynaptic membranes signal the feedback inhibition of NEUROTRANSMITTER release.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A subclass of alpha-adrenergic receptors found on both presynaptic and postsynaptic membranes where they signal through Gi-Go G-PROTEINS. While postsynaptic alpha-2 receptors play a traditional role in mediating the effects of ADRENERGIC AGONISTS, the subset of alpha-2 receptors found on presynaptic membranes signal the feedback inhibition of NEUROTRANSMITTER release.

MeSH Record

Classification

Related Concepts

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MeSH Record

Synonyms

63 entry terms
  • Adrenergic Receptor, alpha-2
  • Receptor, Adrenergic, alpha-2
  • Receptors, Adrenergic, alpha-2
  • Receptors, alpha-2 Adrenergic
  • alpha 2 Adrenergic Receptors
  • alpha-2 Adrenergic Receptors
  • Adrenergic Receptor, alpha 2
  • Adrenergic Receptors, alpha-2
  • Adrenergic alpha 2 Receptors
  • Receptor, alpha-2 Adrenergic
  • Receptors, Adrenergic alpha-2
  • Receptors, alpha 2 Adrenergic
  • alpha-2 Adrenergic Receptor
  • alpha-2 Receptors, Adrenergic
  • Adrenergic Receptor alpha(2C)
  • Adrenergic Receptor alpha(2d)
  • Adrenergic Receptor alpha-2C
  • Adrenergic Receptor alpha-2b
  • Adrenergic alpha-2A Receptors
  • Adrenergic alpha-2B Receptors
  • Adrenergic alpha-2C Receptors
  • Adrenergic alpha-2D Receptors
  • Receptor, Adrenergic, alpha-2A
  • Receptor, Adrenergic, alpha-2B
  • Receptor, Adrenergic, alpha-2C
  • Receptor, Adrenergic, alpha-2D
  • Receptors, Adrenergic, alpha-2A
  • Receptors, Adrenergic, alpha-2B
  • Receptors, Adrenergic, alpha-2D
  • alpha-2A Adrenergic Receptor
  • alpha-2B Adrenergic Receptor
  • alpha-2C Adrenergic Receptor
  • alpha-2D Adrenergic Receptor
  • Adrenergic Receptor alpha 2C
  • Adrenergic Receptor alpha 2b
  • Adrenergic Receptor, alpha-2A
  • Adrenergic Receptor, alpha-2B
  • Adrenergic Receptor, alpha-2C
  • Adrenergic Receptor, alpha-2D
  • Adrenergic alpha 2A Receptors
  • Adrenergic alpha 2B Receptors
  • Adrenergic alpha 2C Receptors
  • Adrenergic alpha 2D Receptors
  • Receptor alpha-2C, Adrenergic
  • Receptor alpha-2b, Adrenergic
  • Receptor, alpha-2A Adrenergic
  • Receptor, alpha-2B Adrenergic
  • Receptor, alpha-2C Adrenergic
  • Receptor, alpha-2D Adrenergic
  • Receptors, Adrenergic alpha-2A
  • Receptors, Adrenergic alpha-2B
  • Receptors, Adrenergic alpha-2C
  • Receptors, Adrenergic alpha-2D
  • alpha 2A Adrenergic Receptor
  • alpha 2B Adrenergic Receptor
  • alpha 2C Adrenergic Receptor
  • alpha 2D Adrenergic Receptor
  • alpha-2A Receptors, Adrenergic
  • alpha-2B Receptors, Adrenergic
  • alpha-2C Receptors, Adrenergic
  • alpha-2C, Adrenergic Receptor
  • alpha-2D Receptors, Adrenergic
  • alpha-2b, Adrenergic Receptor

MeSH Record

Aspects Covered

17 allowable subheadings

Indexed with the subheadings administration & dosage, analysis, biosynthesis, blood, chemistry, classification, deficiency, drug effects, genetics, history, immunology, isolation & purification, metabolism, physiology, radiation effects, therapeutic use, ultrastructure.

MeSH Record

History Note

1994

MeSH Record

Previous Indexing

  • Receptors, Adrenergic, alpha (1977-1993)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Adrenergic alpha-2 Receptors. Medical Subject Headings (MeSH). 2026. Unique ID D018341. http://id.nlm.nih.gov/mesh/2026/D018341
  2. Adrenergic alpha-2 Receptors. In: Wikipedia. https://en.wikipedia.org/wiki/Alpha-2_adrenergic_receptor
  3. Adrenergic alpha-2 Receptors. In: Wikidata. https://www.wikidata.org/wiki/Q288084