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Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

Overview
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...
Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...
Hypersensitivities01:30

Hypersensitivities

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.
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...
Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...

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Articles linked to this work by shared authors, journal, and citation graph.

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Evaluation of Allergenic, Immunogenic, and Skin-Irritant Effects of Deicing Chemicals in Warm-Blooded Animals.

Bulletin of experimental biology and medicine·2019
Same author

[STATE OF NONALLERGIC HYPERSENSITIVITY UNDER THE EXPOSURE TO ADVERSE ENVIRONMENTAL FACTORS].

Gigiena i sanitariia·2016
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[Nonallergic hypersensitivity to environmental factors].

Gigiena i sanitariia·2013
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[Testing of the system of biochemical and immunological indices of the state of population health in the survey of residents of Moscow, exposed to ambient air pollution].

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[Enhanced serum DNAase activity in hypersensitization to pollen allergens].

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Related Experiment Video

Updated: May 8, 2026

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
06:34

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma

Published on: June 4, 2017

[Pseudoallergic states].

V N Fedoseeva, A K Makovetskaya, O V Mislavsky

    Gigiena I Sanitariia
    |September 6, 2013
    PubMed
    Summary
    This summary is machine-generated.

    Environmental chemical hypersensitivity is a critical factor in hygiene studies. This research addresses non-allergic hypersensitivity, previously overlooked, and its impact on the working population.

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    Area of Science:

    • Environmental Health
    • Toxicology
    • Human Physiology

    Context:

    • Human organism's hyperreactivity to environmental chemical factors is significant in hygienic studies.
    • Hypersensitivity to environmental factors is a limiting factor in setting safe chemical substance levels.
    • Existing hygienic studies have not adequately considered non-allergic hypersensitivity (pseudo-allergic response).

    Purpose:

    • To highlight the significance of studying hyperreactivity to environmental chemical factors.
    • To address the gap in considering non-allergic hypersensitivity in hygienic assessments.
    • To develop a system for differentiating true allergy from pseudo-allergic responses for practical population surveillance.

    Summary:

    • Analysis of existing literature confirms the importance of studying human hyperreactivity to environmental chemicals.
    • Non-allergic hypersensitivity, or pseudo-allergic response, has been a neglected area in hygienic research.
    • The prevalence of pseudo-allergic responses in the working-age population remains unstudied, and methods for differential diagnosis are lacking.

    Impact:

    • This research underscores the need to incorporate non-allergic hypersensitivity into environmental health standards.
    • Understanding pseudo-allergic responses can lead to more accurate risk assessments for chemical exposures.
    • Development of differential diagnostic tools will improve public health surveillance and occupational health practices.