Autonomic Pharmacology | Adrenergic Agonists

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https://www.ninjanerd.org/lecture/autonomic-pharmacology-adrenergic-agonists

Ninja Nerds!
In this high-yield pharmacology lecture, Professor Zach Murphy presents a detailed and visually engaging overview of Adrenergic Agonists, emphasizing their mechanisms of action, receptor selectivity, and clinical relevance. This lecture will help you master the key sympathomimetic agents and understand how they modulate the sympathetic nervous system.

We begin with a concise review of adrenergic physiology, covering the roles of alpha (α1, α2) and beta (β1, β2, β3) adrenergic receptors and their locations in various organ systems. From there, we explore both direct-acting and indirect-acting adrenergic agonists, including:
• Endogenous catecholamines: Epinephrine, Norepinephrine, Dopamine
• Synthetic agents: Phenylephrine, Clonidine, Dobutamine, Albuterol, Isoproterenol
• Indirect-acting agents: Amphetamines, Cocaine, Tyramine

Each drug is discussed in detail, covering:
• Mechanism of action: Receptor subtype selectivity and downstream effects
• Physiologic effects: Cardiovascular, pulmonary, metabolic, and ocular responses
• Clinical indications: Shock states, asthma, bradycardia, nasal congestion, ADHD
• Adverse effects: Hypertension, tachyarrhythmias, anxiety, ischemia, tolerance

The lecture includes comparative tables, diagrams, and clinical scenarios to help solidify your understanding and differentiate between similar agents. Whether you’re reviewing for your pharmacology course or brushing up on clinical applications, this lecture will give you a solid grasp of adrenergic agonists and their therapeutic uses.

Enjoy the lecture and support us below!

Table of Contents:
0:00 Lab
0:07 Adrenergic Agonists Introduction
1:06 Adrenergic Neurons and Receptors
19:32 Adrenergic Target Organ Effects
30:34 Alpha 1 Agonists
39:38 Alpha 2 Agonists
47:48 Beta 1 Agonists
51:42 Beta 1 + 2 Agonists
56:19 Beta 2 Agonists
1:02:47 Beta 3 Agonists
1:04:07 Alpha + Beta Agonists
1:13:17 Epinephrine + Dopamine
1:22:30 Norepinephrine Graphical Representation
1:29:48 Epinephrine Graphical Representation
1:34:49 Isoproterenol Graphical Representation
1:39:11 Adrenergic Agonists Practice Problems
1:45:20 Comment, Like, SUBSCRIBE!

Supplemental Lecture: Neurology | Adrenergic Receptors -- https://youtu.be/ZLW8V7bwW4U

Pharmacology Source:
Whalen, Karen. Lippincott Illustrated Reviews: Pharmacology (Lippincott Illustrated Reviews Series). Wolters Kluwer Health. Kindle Edition.

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