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Inflammation

Inflammation

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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...

Inflammatory Response I: Vascular and Cellular

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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 III: Local and Systemic Effects

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...

Complement System

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Related Experiment Video

Updated: Jun 17, 2026

Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader

Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader

Published on: May 24, 2024

Activated protein C action in inflammation.

Pranita P Sarangi¹, Hyun-wook Lee, Minsoo Kim

¹Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA.

British Journal of Haematology

|December 10, 2009

Summary

This summary is machine-generated.

Activated protein C (APC) has anti-inflammatory and anti-apoptotic effects beneficial in treating severe sepsis. These cytoprotective functions, not its anticoagulant properties, are key to APC

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Increased Recovery Time and Decreased LPS Administration to Study the Vagus Nerve Stimulation Mechanisms in Limited Inflammatory Responses

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Published on: March 29, 2017

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Last Updated: Jun 17, 2026

Characterizing Modulators of Protease-Activated Receptors with a Calcium Mobilization Assay Using a Plate Reader

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Published on: March 29, 2017

Area of Science:

Biochemistry
Critical Care Medicine
Pharmacology

Background:

Activated protein C (APC) is a natural anticoagulant regulating coagulation homeostasis.
APC exhibits cytoprotective effects, including anti-inflammatory and anti-apoptotic properties.
Recombinant human APC (rhAPC) is approved for severe sepsis treatment.

Purpose of the Study:

To investigate the therapeutic mechanisms of APC in severe sepsis.
To evaluate the role of APC's cytoprotective versus anticoagulant effects in sepsis treatment.

Main Methods:

Review of existing literature on APC's functions and clinical use in sepsis.
Analysis of clinical trial data and mechanistic studies related to APC therapy.

Main Results:

APC's anticoagulant effects are not solely responsible for its therapeutic benefits in sepsis.
APC's anti-inflammatory and anti-apoptotic actions are crucial for mitigating sepsis-induced organ damage.
Clinical efficacy of APC in sepsis is linked to its cytoprotective rather than anticoagulant activity.

Conclusions:

The cytoprotective effects of APC are the primary drivers of its therapeutic benefit in severe sepsis.
APC's anti-inflammatory and anti-apoptotic actions offer a novel therapeutic strategy for sepsis management.
Further research should focus on leveraging APC's cytoprotective properties for sepsis treatment.