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Related Concept Videos

Inflammatory Response01:28

Inflammatory Response

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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,...
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Inflammatory Response II: Inflammatory Exudate and Tissue Repair01:24

Inflammatory Response II: Inflammatory Exudate and Tissue Repair

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The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the...
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Compounds Essential to Human Function01:25

Compounds Essential to Human Function

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The human body is composed of cells that are fundamentally made up of several different molecules. These molecules are essential to carry out all physiological processes in the body and are broadly classified into organic and inorganic based on their chemical structures.
Inorganic Compounds Essential to Human Functioning
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Inflammatory Response I: Vascular and Cellular01:30

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,...
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Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

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Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
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Inflammatory Bowel Disease V: Surgical Management01:21

Inflammatory Bowel Disease V: Surgical Management

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Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
Here are some common surgical interventions for IBD:
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Related Experiment Video

Updated: Feb 1, 2026

Three-dimensional Inflammatory Human Tissue Equivalents of Gingiva
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Three-dimensional Inflammatory Human Tissue Equivalents of Gingiva

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The inflammatory function of human IgA.

Ivo S Hansen1,2, Dominique L P Baeten1,2, Jeroen den Dunnen3,4

  • 1Amsterdam Rheumatology and immunology Center, Academic Medical Center (AMC), Amsterdam, The Netherlands.

Cellular and Molecular Life Sciences : CMLS
|December 1, 2018
PubMed
Summary
This summary is machine-generated.

Immunoglobulin A (IgA) actively initiates inflammation by forming immune complexes that trigger Fc alpha Receptor I (FcαRI). This FcαRI-induced inflammation is crucial for host defense and implicated in chronic inflammatory diseases.

Keywords:
AutoimmunityCytokinesFcαRIInflammationMyeloid cells

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Dynamic Adhesion Assay for the Functional Analysis of Anti-adhesion Therapies in Inflammatory Bowel Disease

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Area of Science:

  • Immunology
  • Inflammation Biology

Background:

  • Immunoglobulin A (IgA) was traditionally viewed as a neutralizer of pathogens at mucosal surfaces.
  • Emerging evidence reveals IgA's active role in initiating inflammation at both mucosal and non-mucosal sites in humans.

Purpose of the Study:

  • To elucidate the mechanisms by which IgA contributes to inflammation.
  • To explore the role of Fc alpha Receptor I (FcαRI) in IgA-mediated inflammatory responses.
  • To investigate the implications of IgA-induced inflammation in host defense and disease pathogenesis.

Main Methods:

  • Immune complex formation involving IgA.
  • Fc alpha Receptor I (FcαRI) activation and co-stimulation.
  • Analysis of pro-inflammatory cytokine production in myeloid cells (dendritic cells, macrophages, monocytes, Kupffer cells).

Main Results:

  • IgA immune complexes trigger FcαRI, amplifying inflammatory responses through receptor synergy.
  • FcαRI co-stimulation significantly impacts pro-inflammatory cytokine production by various myeloid cells.
  • FcαRI-induced inflammation is vital for orchestrating host defense and generating tissue-specific immunity.

Conclusions:

  • IgA actively initiates inflammation via FcαRI, contributing to host defense and immunity.
  • FcαRI-induced inflammation is implicated in the pathogenesis of chronic inflammatory disorders like IBD, celiac disease, and rheumatoid arthritis.
  • Targeting IgA-induced inflammation offers potential therapeutic strategies for both promoting inflammatory responses (e.g., cancer therapy) and counteracting chronic inflammation.