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Related Concept Videos

Acute Inflammation I: Inflammatory Response01:26

Acute Inflammation I: Inflammatory Response

Acute inflammation is a rapid, short-lived physiological response to tissue injury or infection, designed to eliminate harmful agents and initiate repair. This tightly regulated process typically lasts from minutes to several days and is triggered by factors such as microbial invasion, physical trauma, or chemical injury.Recognition and Mediator ReleaseThe inflammatory response begins when resident immune cells—such as mast cells, macrophages, and dendritic cells—detect damage-associated...
Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Inflammatory Response01:28

Inflammatory Response

An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
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...
Inflammatory Response I: Vascular and Cellular01:30

Inflammatory Response I: Vascular and Cellular

The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...
Acute Inflammation II: Cellular Phase01:26

Acute Inflammation II: Cellular Phase

The cellular phase of acute inflammation is a tightly orchestrated sequence of events that recruits leukocytes, primarily neutrophils, to sites of tissue injury or infection. Following the initial vascular changes, this phase ensures effective immune cell migration, activation, and function at the affected site to eliminate pathogens and initiate tissue repair.Leukocyte Recruitment CascadeLeukocyte recruitment happens in four steps: margination, adhesion, transmigration, and chemotaxis. Reduced...

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Related Experiment Video

Updated: Jul 5, 2026

Accurate and Simple Measurement of the Pro-inflammatory Cytokine IL-1β using a Whole Blood Stimulation Assay
06:29

Accurate and Simple Measurement of the Pro-inflammatory Cytokine IL-1β using a Whole Blood Stimulation Assay

Published on: March 1, 2011

The evolution of inflammatory mediators.

A F Rowley1

  • 1School of Biological Sciences University of Wales Swansea Singleton Park Swansea SA2 8PP UK.

Mediators of Inflammation
|January 1, 1996
PubMed
Summary

Invertebrates possess effective defense mechanisms against pathogens, with inflammation serving as a crucial first line of defense. This review explores invertebrate and fish inflammatory responses, focusing on key cellular players and mediators like eicosanoids and cytokines.

Area of Science:

  • Comparative immunology
  • Invertebrate biology
  • Evolutionary medicine

Background:

  • Invertebrates exhibit remarkable diversity and evolutionary success despite lacking sophisticated immune systems seen in higher vertebrates.
  • Effective defense mechanisms are essential for invertebrates to combat parasites, pathogens, and damaged self-tissues.
  • Inflammation is recognized as a fundamental early defense strategy across both invertebrate and vertebrate species.

Purpose of the Study:

  • To review the inflammatory responses in invertebrates and fish.
  • To identify the key cell types involved in invertebrate inflammation.
  • To highlight the crucial mediators of inflammation, including eicosanoids, cytokines, and adhesion molecules.

Main Methods:

  • Literature review of existing studies on invertebrate and fish immunology.

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Characterization of Immune Cells and Proinflammatory Mediators in the Pulmonary Environment
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Characterization of Immune Cells and Proinflammatory Mediators in the Pulmonary Environment

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Related Experiment Videos

Last Updated: Jul 5, 2026

Accurate and Simple Measurement of the Pro-inflammatory Cytokine IL-1β using a Whole Blood Stimulation Assay
06:29

Accurate and Simple Measurement of the Pro-inflammatory Cytokine IL-1β using a Whole Blood Stimulation Assay

Published on: March 1, 2011

Screening Assays to Characterize Novel Endothelial Regulators Involved in the Inflammatory Response
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Screening Assays to Characterize Novel Endothelial Regulators Involved in the Inflammatory Response

Published on: September 15, 2017

Characterization of Immune Cells and Proinflammatory Mediators in the Pulmonary Environment
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  • Focus on cellular components and molecular mediators of inflammatory processes.
  • Comparative analysis of inflammatory mechanisms between invertebrates and vertebrates.

    • Main Results:

    • Invertebrates utilize inflammation as a primary defense mechanism.
    • Specific cell types and signaling molecules are integral to invertebrate inflammatory cascades.
    • Mediators such as eicosanoids, cytokines, and adhesion molecules play significant roles.

    Conclusions:

    • Invertebrates possess robust, albeit less complex, immune strategies compared to vertebrates.
    • Inflammation is a conserved and vital defense system in invertebrates.
    • Understanding these mechanisms provides insights into the evolution of immunity.