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Target intelligence / Profile preview
Alpha-Adrenergic Receptor (Nasal Mucosa)
- Molecular classification
- G protein-coupled receptor
01
Overview
Alpha-adrenergic receptors in the nasal mucosa are G protein-coupled receptors located primarily on the smooth muscle of precapillary and postcapillary blood vessels. Activation of these receptors causes vasoconstriction, reducing blood flow and congestion. The main subtypes are alpha1-adrenoceptors and alpha2-adrenoceptors. Drugs like phenylephrine and oxymetazoline act as agonists to relieve nasal congestion. Excessive use can lead to rebound congestion.
02
Mechanism of action
Agonist at alpha-adrenergic receptors leading to vasoconstriction in the nasal mucosa, reducing blood flow and congestion.
03
Biological functions
VasoconstrictionRegulation of blood flow
04
Disease associations
Nasal congestionRhinitisAllergic rhinitisUpper respiratory infections
05
Safety considerations
Rebound congestion (rhinitis medicamentosa)Systemic side effects with oral administrationPotential for ischemia with excessive alpha2-adrenoceptor stimulation
06
Interacting drugs
Phenylephrine
1 more in the full profile.
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