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Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

Overview
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...
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...
Inflammatory Bowel Disease III: Crohn's Disease01:25

Inflammatory Bowel Disease III: Crohn's Disease

Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
Hypersensitivity Reactions: Delayed Hypersensitivity Reactions01:29

Hypersensitivity Reactions: Delayed Hypersensitivity Reactions

Delayed-Type Hypersensitivity (DTH), or Type IV hypersensitivity, is a cell-mediated immune response. It occurs when T cells, rather than antibodies, mediate a reaction to specific antigens. It is characterized by a delayed onset (1-2 days) and involves the recruitment of macrophages to the inflammation site.The initiation of a DTH response begins with the sensitization of T cells. During this phase, which lasts at least 1-2 weeks, antigen-specific T cells are activated, clonally expanded, and...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...

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Related Experiment Video

Updated: Jun 6, 2026

Analysis of Pulmonary Dendritic Cell Maturation and Migration during Allergic Airway Inflammation
07:52

Analysis of Pulmonary Dendritic Cell Maturation and Migration during Allergic Airway Inflammation

Published on: July 23, 2012

Epithelial-dendritic cell interactions in allergic disorders.

Deborah H Strickland1, John W Upham, Patrick G Holt

  • 1Telethon Institute for Child Health Research, and Centre for Child Health Research, The University of Western Australia, Perth, Western Australia, Australia.

Current Opinion in Immunology
|November 26, 2010
PubMed
Summary
This summary is machine-generated.

Airway epithelial cells and dendritic cells interact to maintain immune balance. These bidirectional communications significantly influence respiratory immune responses and allergic disorders.

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Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy
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Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy

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Analysis of Pulmonary Dendritic Cell Maturation and Migration during Allergic Airway Inflammation
07:52

Analysis of Pulmonary Dendritic Cell Maturation and Migration during Allergic Airway Inflammation

Published on: July 23, 2012

Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy
10:39

Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy

Published on: April 16, 2019

Area of Science:

  • Immunology
  • Pulmonary Medicine
  • Cell Biology

Background:

  • Airway epithelial cells are key to pulmonary defense and immune homeostasis.
  • Dendritic cells are potent immune response inducers.
  • Epithelial cells modulate dendritic cell function via mediators, and vice versa.

Purpose of the Study:

  • To review recent advances in understanding airway epithelial/dendritic cell interactions.
  • To explore the role of these interactions in allergic disorders.

Main Methods:

  • Literature review of recent scientific advances.
  • Focus on bidirectional communication pathways.

Main Results:

  • Epithelial and dendritic cell interactions are crucial for respiratory immunity and tolerance.
  • These interactions significantly impact the development and progression of allergic diseases.

Conclusions:

  • Bidirectional communication between airway epithelial cells and dendritic cells is vital for respiratory immune homeostasis.
  • Understanding these interactions offers insights into managing allergic disorders.