Related Experiment Video
Updated: Jun 22, 2026
07:22
Basophil Activation Test for Allergy Diagnosis
Published on: May 31, 2021
In vitro tests in drug hypersensitivity diagnosis
Priska Lochmatter1, Anna Zawodniak, Werner J Pichler
1Division of Allergology, Clinic of Rheumatology and Clinical Immunology/Allergology, Inselspital, Bern University Hospital and University of Bern, Bern CH-3010, Switzerland.
Immunology and Allergy Clinics of North America
|July 1, 2009
Summary
Diagnosing drug hypersensitivity reactions (DHRs) is complex. This review explores immunologic mechanisms and advanced in vitro tests for personalized drug allergy diagnosis, focusing on T-cell-mediated reactions.
Area of Science:
- Immunology
- Allergy and Immunology
- Pharmacology
Background:
- Drug hypersensitivity reactions (DHRs) present diagnostic challenges due to complex underlying mechanisms.
- Accurate diagnosis is crucial for patient management and avoiding unnecessary drug avoidance.
- Advances in understanding immunologic pathways are key to improving DHR diagnostics.
Purpose of the Study:
- To review current and emerging in vitro diagnostic techniques for T-cell-mediated DHRs.
- To highlight the importance of integrating various diagnostic approaches for personalized drug allergy assessment.
- To discuss recent findings and future directions in DHR diagnosis.
Main Methods:
- Review of current literature on in vitro diagnostic tools for DHRs.
- Discussion of cellular-based assays and their role in diagnosing drug allergy.
- Analysis of recent advancements in T-cell-mediated hypersensitivity diagnostics.
Main Results:
- In vitro tests, alongside clinical history, are essential for accurate DHR diagnosis.
- Cellular-based assays show promise for identifying specific drug-reactive T-cells.
- Understanding immunologic mechanisms aids in tailoring diagnostic strategies.
Conclusions:
- A multi-faceted approach combining medical history and in vitro testing is necessary for diagnosing DHRs.
- Emerging cellular assays offer improved specificity for T-cell-mediated drug hypersensitivity.
- Personalized diagnostic strategies are vital for effective drug allergy management.
Related Concept Videos
01:30Drug 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...
01:27Allergic 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...
01:10In Vitro Drug Release Testing: Overview, Development and Validation
In vitro dissolution and drug release tests assess how quickly and how much of a drug is released from its dosage form into an aqueous medium under standardized laboratory conditions. These tests are essential tools in pharmaceutical development and quality assurance, offering insight into the drug's performance before clinical use.During formulation development, dissolution testing identifies incomplete or inconsistent drug release issues. It also supports decisions on selecting the optimal...
01:16Methods for Studying Drug Absorption: In vitro
In vitro experiments are crucial for understanding the transport and absorption of drugs through biological materials. These studies employ varied methods such as the diffusion cell method, the everted sac technique, and the everted ring technique.
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
01:13In Vitro Drug Dissolution: Compendial Testing Models I
Compendial dissolution methods are standardized procedures defined by pharmacopeias to evaluate the rate at which a drug dissolves in a specific medium. These methods ensure batch-to-batch consistency, enable quality control, and support the prediction of drug bioavailability. They are critical for both immediate and modified-release drug products.The apparatuses used for dissolution testing differ in their design and mechanical function, but all aim to simulate the physiological environment of...
01:30Allergic 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),...