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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
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...
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,...
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,...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

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Related Experiment Video

Updated: Jun 21, 2026

Experimental Autoimmune Uveitis: An Intraocular Inflammatory Mouse Model
07:40

Experimental Autoimmune Uveitis: An Intraocular Inflammatory Mouse Model

Published on: January 12, 2022

Immune response genes in uveitis.

Liping Du1, Aize Kijlstra, Peizeng Yang

  • 1Chongqing Key Laboratory of Ophthalmology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, PR China.

Ocular Immunology and Inflammation
|August 7, 2009
PubMed
Summary
This summary is machine-generated.

Uveitis involves intraocular inflammation driven by immune responses. Genetic factors like HLA genes and immune response gene polymorphisms play a role in its development and predisposition.

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Area of Science:

  • Ophthalmology
  • Immunology
  • Genetics

Background:

  • Uveitis is intraocular inflammation with unknown precise pathogenesis.
  • Innate and adaptive immune responses are implicated in uveitis development.
  • Toll-like receptors and NOD proteins are involved in infectious uveitis.

Purpose of the Study:

  • To explore the role of immune response genes in uveitis.
  • To understand the genetic predisposition to different uveitis entities.
  • To identify potential targets for novel uveitis treatments.

Main Methods:

  • Review of existing evidence on immune mechanisms in uveitis.
  • Analysis of associations between HLA genes and specific uveitis types.
  • Investigation of polymorphisms in immune response genes (TNF, MICA, IL-1, CTLA-4).

Main Results:

  • Specific HLA gene associations identified for various uveitis entities (e.g., HLA-B27 in acute anterior uveitis).
  • Polymorphisms in immune response genes (TNF, MICA, IL-1) contribute to uveitis.
  • CTLA-4 gene polymorphisms found in Chinese VKH syndrome patients.

Conclusions:

  • Immune response genes, including HLA and others, are crucial in uveitis pathogenesis.
  • Understanding these genetic factors is key to unraveling uveitis.
  • Further research may lead to new therapeutic strategies for uveitis.