Related Experiment Video

Updated: Aug 18, 2026

Prostaglandin Extraction and Analysis in Caenorhabditis elegans
08:50

Prostaglandin Extraction and Analysis in Caenorhabditis elegans

Published on: June 25, 2013

Prostaglandins as determinants of vascular reactivity

J C McGiff, K U Malik, N A Terragno

    Federation Proceedings
    |October 1, 1976
    PubMed

    More Related Videos

    Assessing Myogenic Response and Vasoactivity In Resistance Mesenteric Arteries Using Pressure Myography10:48

    Assessing Myogenic Response and Vasoactivity In Resistance Mesenteric Arteries Using Pressure Myography

    Published on: July 6, 2015

    Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues08:41

    Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues

    Published on: June 3, 2019

    Related Concept Videos

    Vascular Spasm01:16

    Vascular Spasm

    The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last for...
    Vascular Resistance01:20

    Vascular Resistance

    Vascular resistance is a critical concept in understanding blood flow dynamics in the circulatory system. It refers to the resistance that blood encounters as it flows through the blood vessels. This resistance is a key factor in determining blood pressure and cardiac workload.
    The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
    Autoregulation of Blood Flow01:17

    Autoregulation of Blood Flow

    Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
    Chemical Signaling in Autoregulation
    Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation.
    Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists01:23

    Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

    Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
    These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
    Drugs for Peptic Ulcer Disease: Prostaglandin Analogs as Mucosal Protective Agents01:20

    Drugs for Peptic Ulcer Disease: Prostaglandin Analogs as Mucosal Protective Agents

    The gastric mucosa produces prostaglandins E2 (PGE2) and prostacyclin (PGI2), crucial in maintaining gastric health. They exert cytoprotective effects, including increasing bicarbonate secretion, releasing protective mucin, reducing gastric acid output, and preventing harmful vasoconstriction. These effects are mediated through various receptors, such as EP1, EP2, EP3, and EP4.
    Non-steroidal anti-inflammatory drugs (NSAIDs) can induce peptic ulcers by inhibiting cyclooxygenase, decreasing...
    Acute Inflammation III: Local and Systemic Effects01:25

    Acute Inflammation III: Local and Systemic Effects

    Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...