Atlas One · Host Biology · Scale 03 — Molecular

Epinephrine

Catecholamine (MW 183.21) synthesised from norepinephrine by PNMT in adrenal medulla chromaffin cells. Activates α₁, α₂, β₁, β₂, β₃ adrenergic receptors mediating fight-or-flight response. First-line treatment for anaphylaxis. Phaeochromocytoma causes paroxysmal hypertension.

Also known as: adrenaline, Epi, epinephrin, 4-(1-hydroxy-2-(methylamino)ethyl)-1,2-benzenediol

Scale 03 — MolecularScale
draftStatus
2026-06-05Last Reviewed
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epinephrine

Epinephrine

Catecholamine (MW 183.21) synthesised from norepinephrine by PNMT in adrenal medulla chromaffin cells. Activates α₁, α₂, β₁, β₂, β₃ adrenergic receptors mediating fight-or-flight response. First-line treatment for anaphylaxis. Phaeochromocytoma causes paroxysmal hypertension.