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Related Concept Videos

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,...
Toxic Reactions: Overview01:26

Toxic Reactions: Overview

When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...
Allergic Drug Reactions01:27

Allergic Drug Reactions

Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing numerous...
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...
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,...

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Related Experiment Video

Updated: May 29, 2026

Intravenous Endotoxin Challenge in Healthy Humans: An Experimental Platform to Investigate and Modulate Systemic Inflammation
07:48

Intravenous Endotoxin Challenge in Healthy Humans: An Experimental Platform to Investigate and Modulate Systemic Inflammation

Published on: May 16, 2016

Differential inflammatory responses triggered by toxic small molecules.

Soumitra Barua1, Jason Larabee, James L Regens

  • 1Department of Microbiology and Immunology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA. sbarua@ouhsc.edu

Environmental Science and Pollution Research International
|September 2, 2011
PubMed
Summary
This summary is machine-generated.

Toxic industrial chemicals (TICs) can subtly alter macrophage immune function by changing cytokine and chemokine production. These changes correlate with altered intracellular signaling pathways, suggesting potential immunosuppression even at low exposure levels.

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Visualization of Bacterial Toxin Induced Responses Using Live Cell Fluorescence Microscopy
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Visualization of Bacterial Toxin Induced Responses Using Live Cell Fluorescence Microscopy

Published on: October 1, 2012

Related Experiment Videos

Last Updated: May 29, 2026

Intravenous Endotoxin Challenge in Healthy Humans: An Experimental Platform to Investigate and Modulate Systemic Inflammation
07:48

Intravenous Endotoxin Challenge in Healthy Humans: An Experimental Platform to Investigate and Modulate Systemic Inflammation

Published on: May 16, 2016

Visualization of Bacterial Toxin Induced Responses Using Live Cell Fluorescence Microscopy
14:29

Visualization of Bacterial Toxin Induced Responses Using Live Cell Fluorescence Microscopy

Published on: October 1, 2012

Area of Science:

  • Immunology
  • Toxicology
  • Cellular Biology

Background:

  • Macrophages are key immune cells involved in host defense.
  • Exposure to toxic industrial chemicals (TICs) can impact immune cell function.
  • Understanding these effects is crucial for assessing health risks.

Purpose of the Study:

  • To investigate how toxic industrial chemicals (TICs) affect chemokine and cytokine production in macrophages.
  • To link these immune alterations to changes in intracellular signaling pathways.
  • To examine the activation of specific gene promoters in response to TICs.

Main Methods:

  • RAW 264.7 mouse macrophages were treated with selected TICs.
  • Luminex multiplex technology assessed cytokine/chemokine expression and kinase signaling.
  • Macrophage cell lines with promoter-specific luciferase reporters were used to detect transcriptional responses.

Main Results:

  • Sublethal levels of TICs altered macrophage cytokine and chemokine profiles, indicating potential immunosuppression.
  • Changes in immune function correlated with the activation of intracellular kinase signaling pathways.
  • TIC exposure led to detectable changes in transcriptional responses.

Conclusions:

  • Sublethal doses of TICs can subtly but critically affect macrophage function.
  • Altered immune responses are linked to changes in intracellular signaling pathways.
  • This research provides insight into the immunomodulatory effects of TICs.