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Related Concept Videos

Cross-reactivity00:42

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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 numerous...
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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),...
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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...
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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Related Experiment Video

Updated: Jun 2, 2026

Application of Biochip Microfluidic Technology to Detect Serum Allergen-specific Immunoglobulin E (sIgE)
07:10

Application of Biochip Microfluidic Technology to Detect Serum Allergen-specific Immunoglobulin E (sIgE)

Published on: April 21, 2019

Allergen compatibilities in extract mixtures.

Robert E Esch1, Thomas J Grier

  • 1Research and Development, Greer Laboratories, Inc, 639 Nuway Circle, Lenoir, NC 28645, USA. esch@greerlabs.com

Immunology and Allergy Clinics of North America
|May 3, 2011
PubMed
Summary
This summary is machine-generated.

Determining the shelf-life of allergen extracts, especially complex mixtures, is challenging. Validated stability tests are needed to ensure product efficacy and safety for clinical use.

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Area of Science:

  • Allergen immunotherapy
  • Pharmaceutical stability

Background:

  • Limited data exists on the shelf-life of allergen extracts.
  • Current stability information is based on a few well-characterized products.

Purpose of the Study:

  • To highlight the challenges in determining the stability of allergen extracts.
  • To emphasize the need for validated stability-indicating tests for broader product application.

Main Methods:

  • Review of existing stability studies on allergen extracts.
  • Analysis of challenges in evaluating complex, multiextract mixtures.
  • Extrapolation of data from controlled studies for guideline development.

Main Results:

  • Stability studies provide some shelf-life information for simple allergen extracts.
  • Validated stability-indicating tests and clinical verification are crucial but challenging.
  • Evaluating complex mixtures requires overcoming significant hurdles.

Conclusions:

  • Current expiration dating guidelines for allergen extracts rely on extrapolations.
  • Further research is needed to develop robust stability-indicating tests for diverse products.
  • Ensuring the stability of complex allergen mixtures is critical for effective clinical practice.