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Related Concept Videos

Allergic Drug Reactions01:27

Allergic Drug Reactions

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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...
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Asthma: Pathogenesis and Management01:20

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Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
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Asthma-II: Pathophysiology and Classification01:26

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Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
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Hypersensitivities01:30

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Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
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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
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Related Experiment Video

Updated: Sep 9, 2025

A Non-invasive Way to Isolate and Phenotype Cells from the Conjunctiva
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Decoding Allergic Conjunctivitis: Latest Perspectives on Etiological Drivers and Immunopathological Mechanisms.

Jiayu Bao1, Ya Wen1, Lei Tian2

  • 1Beijing Institute of Ophthalmology, Beijing TongRen Eye Center, Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing Tongren Hospital, Capital Medical University, HouGouHuTong, DongCheng District, Beijing, 100005, China.

Clinical Reviews in Allergy & Immunology
|August 29, 2025
PubMed
Summary

Allergic conjunctivitis involves complex immune responses to allergens, genetics, and environmental factors. Understanding these pathways is key to developing personalized treatments for this common eye condition.

Keywords:
Allergic conjunctivitisEtiologyImmunologyPathogenesisPollen allergyRhinoconjunctivitis

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Area of Science:

  • Ophthalmology
  • Immunology
  • Environmental Health

Background:

  • Allergic conjunctivitis (AC) is a prevalent ophthalmic condition with diverse clinical presentations.
  • Its development involves a complex interplay of genetic predisposition and environmental triggers.
  • Severe forms like vernal and atopic keratoconjunctivitis can threaten vision.

Purpose of the Study:

  • To review recent advancements in the etiology and pathogenesis of allergic conjunctivitis.
  • To highlight key factors contributing to AC development and progression.
  • To discuss current challenges and future directions in AC management.

Main Methods:

  • Comprehensive literature review of recent research on AC etiology and pathogenesis.
  • Analysis of immunological, environmental, and genetic factors influencing AC.
  • Synthesis of information on immune cell activation, mediator signaling, and neuroimmune interactions.

Main Results:

  • Key drivers include Immunoglobulin E (IgE)-mediated reactions, genetic susceptibility, and environmental factors like pollution and climate change.
  • Pathogenesis involves Th2 cytokines, alarmins, JAK-STAT signaling, neuroimmune imbalance, epithelial dysfunction, microbiome dysbiosis, and epigenetic modifications.
  • Heterogeneity, personalized medicine, diagnostics, and preventive strategies like immunotherapy remain key challenges.

Conclusions:

  • Advances in understanding AC pathogenesis offer potential for more precise and personalized patient management.
  • Integrating multidimensional research data is crucial for improving AC outcomes.
  • Future strategies should focus on addressing AC heterogeneity and developing targeted therapies.